Description:FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION: A GLASS LINED HEAT EXCHANGER
2. APPLICANT:

(a) NAME : HLE Glascoat Limited
(b) NATIONALITY : India
(c) ADDRESS : H-106, GIDC, Phase – IV,
Vithal Udyognagar,
Anand 388 121,
Gujarat, INDIA.

3. PREMABLE TO THE DESCRIPTION
PROVISIONAL

The following specification describes the invention. þCOMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.

 
FIELD OF THE INVENTION
[0001] The present disclosure relates to a heat exchanger and more particularly, it relates to a glass lined shell and tube heat exchanger.
BACKGROUND
[0002] Heat exchangers are vital devices that transfer heat between two or more fluids at different temperatures without mixing them, essential in industries such as HVAC, power generation, and chemical processing.
[0003] US3,407,871 discloses the heat exchange apparatus comprising a shell and a plurality of tube elements mounted therein, wherein the tube elements contain a twisted strip approximately equal in width to the internal diameter of the tubes, and wherein the strip is freely rotatable within the tube and is under tension during passage of fluid through the tube, and wherein the twisted strip is connected to a readily mountable bearing assembly.
[0004] Said prior art and the conventional heat exchangers can face several limitation that impact their efficiency and reliability, including fouling, which leads to reduced heat transfer due to unwanted material buildup, corrosion from aggressive fluids that compromises structural integrity. Furthermore, as heat exchangers operate under high pressure and temperature, wear and tear can lead to cracks or failures in seals and joints. This not only results in efficiency losses but can also create safety hazards, contamination of fluids, and increased maintenance costs. Additionally, many heat exchangers are bulky and heavy, which can complicate installation and require significant floor space. This bulkiness often arises from the need for extensive surface area and structural support, making them less suitable for applications where space is at a premium.
[0005] Thus, it is desired to design a heat exchanger to overcome the above difficulties. Hence, it is desperately needed to invent a highly efficient heat exchanger and that overcome the difficulties as described above.
OBJECTIVE OF THE INVENTION
[0006] The main objective of the present disclosure is to provide the glass lined heat exchanger to improve the efficiency of the heat exchanger.
[0007] Another objective of the present disclosure is to provide the glass lined heat exchanger that eliminates the leakage of the process material and heat exchanger medium.
[0008] Yet another objective of the present disclosure is to provide the glass lined heat exchanger that eliminated the mixing of the process material and heat exchanger medium.
[0009] Another objective of the present disclosure is to provide the glass lined heat exchanger that is anti-corrosive.
[0010] Another objective of the present disclosure is to provide the glass lined heat exchanger reducing the thermal resistance and providing the more heat transfer.
[0011] Another objective of the present disclosure is to provide the glass lined heat exchanger that is compact and light weight.
[0012] Another objective of the present disclosure is to provide the heat exchanger which improves reliability.

SUMMARY OF THE INVENTION
[0013] The present disclosure relates to the heat exchanger. The present disclosure comprising, a shell having heat exchanger region, inlet and outlet. The plurality of tube disposed elongated in parallel relationship within shell by passing through baffle plate. The tube plate fitted at each end of shell and having perforation corresponding to the each tube, where both end of each tube are fitted in the corresponding perforation of the tube plate. The feed chamber having feed hose and a drain chamber having drain hose, are axially disposed at opposite end of shell. The inner surfaces of the shell, the feed chamber, the drain chamber are glass lined. In similar manner, the outer surfaces of each of the plurality of tubes are glass lined. The present disclosure improves the efficiency and life of heat exchanger, eliminates the leakage and mixing of the process material and heat exchanger medium, and reliability of the heat exchanger.

BRIEF DESCRIPTION OF THE DRAWING
[0014] Other objects, advantages and novel features of the disclosure will become apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
[0015] Fig. 1A shows an isometric view of the heat exchanger, in accordance with some embodiments of the present disclosure;
[0016] Fig. 1B shows a side view of the heat exchanger, in accordance with some embodiments of the present disclosure;
[0017] Fig. 2A shows an isometric view of plurality of tubes with associated chambers of the heat exchanger, in accordance with some embodiments of the present disclosure.
[0018] Fig. 2B shows a side view of plurality of tubes with associated chambers of the heat exchanger, in accordance with some embodiments of the present disclosure.
[0019] Fig. 3A shows an isometric view of tubes with tube plates of the heat exchanger, in accordance with some embodiments of the present disclosure.
[0020] Fig. 3B shows a cross section view of tubes with tube plates of the heat exchanger, in accordance with some embodiments of the present disclosure.
[0021] Fig. 3C shows a side view of tubes with tube plates of the heat exchanger, in accordance with some embodiments of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION
[0022] Before explaining the present disclosure in detail, it is to be understood that the invention is not limited in its application to the details of the construction and arrangement of parts illustrated in the accompany drawings. The invention is capable of other embodiments, as depicted in different figures as described above and of being practiced or carried out in a variety of ways. It is to be understood that the phraseology and terminology employed herein is for the purpose of description and not of limitation.
[0023] The present disclosure is relates to the heat exchanger, and more particularly, the glass lined heat exchanger.
[0024] Fig. 1A and Fig. 1B shows an isometric view and side view of the heat exchanger (101), in accordance with some embodiments of the present disclosure.
[0025] In an embodiment, Fig. 1A and Fig. 1B, discloses a glass line heat exchanger (101). Said glass lined heat exchanger (101) comprise a elongated tubular shell (103) terminates in flange at axially opposed ends thereof, plurality of tube (105), the tube plates (119) in which the ends of the tubes (105) are fixed, the feed chamber (111A) axially disposed at one end of the shell and the drain chamber (111B) axially disposed at opposite end of the shell. The shell (103) having a heat exchange region (110) positioned between tube plates (119).
[0026] Said shell having an inlet (107) formed there through for introducing an heat exchange medium in to the heat exchange region (110) and an outlet (109) for withdrawing the heat exchanger medium from the heat exchange region (110).
[0027] It should be understood that the overall shape, configuration and relative dimensions of the shell (103), the inlet (107) and outlet (109) are shown for exemplary purposes only and may be varied.
[0028] Fig. 2A and Fig. 2B shows an isometric view and a side view of plurality of tube (105) with associated chambers of the heat exchanger (101), in accordance with some embodiments of the present disclosure.
[0029] The plurality of tube (105) are disposed in a parallel relationship within the shell (103) as shown in the Fig.2A and Fig. 2B. Said plurality of tube (105) accommodate within the shell (103) such that the plurality of the tubes (105) are centrally oriented of the shell (103) and each tube (105) of the plurality of tube (105) may be uniformly spaced to each other.
[0030] The process material is flown from the said plurality of the tubes (105). Said plurality of tube (105) in a heat exchanger (101) increase the surface area for heat transfer, allowing efficient exchange of thermal energy between process material and heat exchanger medium and preventing them from mixing.
[0031] Said tubes (105) made from metal material preferably, but not limited to, the carbon steel. The thickness of each of the plurality of tube (105) is preferably kept between 0.6 mm to 1.1 mm. The outer surface of the each of the plurality of the tubes (105) is glass lined and the thickness of glass lining of each tube (105) of the plurality of tube (105) is preferably 0.4-0.7 mm. The overall thickness of each tube (105) of the plurality of tube (105) with the glass lining is preferably 1-1.5 mm. Such optimum configuration of the plurality of the tubes (105) provides better heat exchange of the medium and ultimately increases the efficiency of the heat exchanger (101). Such glass lining over the each tube (105) of the plurality of tube (105) provide superior corrosion resistance to acids, alkalis, water and other chemical solutions. As a result of such chemical resistance, glass lining may extend the life of the heat exchanger (101).
[0032] The heat exchanger medium is fed into the heat exchange region (110) through an inlet (107). The inlet (107) is in fluid communication with the heat exchange region (110). The heat exchanger medium is withdrawn from the heat exchange region (110) through an outlet (109) formed through the shell following the heat exchange between the process material and the heat exchange medium. The tubes (105) are thermally conductive, such that heat exchange can occur between the process material flowing through tubes and the heat exchange medium which is flowing through the heat exchange region (110) external to the tubes. The outlet (107) is in fluid communication with the heat exchange region (110). It should be understood that the overall configuration, shape and positioning of the shell (103), the inlet (107) and outlet (109) are shown in Fig. 1A and Fig. 1B for exemplary purposes only and may be varied.
[0033] As shown in Fig. 1A, Fig. 1B, Fig. 2A and Fig. 2B, the interior of the shell (103) is equipped with a plurality of truncated baffle plate (113) arranged in orthogonal to the central axis of the shell (103). In some embodiments, the plurality of truncated baffle plate (113) may position at an angular orientation to the central axis of the shell (103).
[0034] In an embodiment, the plurality of truncated baffle plate (113) may be spaced equidistantly and in alternative or spiral manner such that the plurality of truncated baffle plate (113) divert the flow of the heat exchanger medium in a spiral or alternating pattern to facilitate more circulation of the heat exchanger medium within the heat exchange. Said plurality of truncated baffle plate (113) having the holes corresponds to some of the plurality of the tubes (105) and passed through it as shown in Fig. 2A and Fig. 2B. Said plurality of the truncated baffle plate (113) support the plurality of the tubes (105) in the interior of the cell and strengthen the overall structure of the shell (103).
[0035] In an embodiment, said plurality of truncated baffle plate (113) may coat with glass lining and provides superior corrosion resistance to acids, alkalis, water and other chemical solutions. As a result of such chemical resistance, glass lining may extend the life of the heat exchanger (101).
[0036] It should be construed that the plurality of tube (105) and the plurality of truncated baffle plate (113) may be configured with the other features for example, shape of plurality of tube (105), fins, grooves, turbulators and like and they are not limited thereto.
[0037] Fig. 3A, Fig. 3B and Fig. 3C shows an isometric view, cross section view and side view of tube plates (119) of the heat exchanger (101), in accordance with some embodiments of the present disclosure.
[0038] In an embodiment, each end of the shell (103) is fitted with the tube plate (119). Each tube plate (119) having perforation corresponding to the each tube (105) and both end of each tube (105) are fitted in the corresponding perforation of the tube plates through the O-rings (129). Said O-rings (129) placed between the each tube (105) and the corresponding perforation of the tube plate (119). Such firm configuration through the O-rings (129) provides the leakage proof joints in the heat exchanger (101) and prevents mixing of the heat exchanger medium and process material. The O-rings (129) may be made from, but not limited to, silicon material, PTFE and like.
[0039] In an embodiment, the tube plate (119) comprises, thin PTFE sheet (123) placed between the PTFE plate (121) and metal plate (125). The metal ring is configured on the peripheral surface of the PTFE plate (121) as shown in Fig. 3A. Said metal ring may strengthen the PTFE plate (121). The PTFE plate (121) provides the superior chemical resistance including acids, bases and other chemical solutions. As a result of such chemical resistance, may extend the life of the heat exchanger (101). Further, the PTFE plate (121) may provide the lower thermal conductivity, which may help to prevent the leakage of the thermal energy from the heat exchanger (101) and may increase the overall efficiency of the heat exchanger (101).
[0040] In an embodiment, the chambers may comprise a feed chamber (111A) and a drain chamber (111B) are terminated in flange at one of ends thereof and identical to each other as shown in Fig. 2A and Fig. 2B. Said feed chamber (111A) and drain chamber (111B) may be firmly fastened with each end of shell (103) through the flanges thereof and aligned with the tube plate (119). Said chambers (111A, 111B) are fastened such that it provides the leakage proof connections between the shell (103) and the chambers. Said feed chamber (111A) and drain chamber (111B) may provide with a feed hose (115) and a drain hose (117) to feed and drain the process material respectively.
[0041] The feed hose (115) and drain hose (117) on the feed chamber (111A) and drain chamber (111B) may provide in line with the centre of the shell (103) and it is not limited thereto.
[0042] It is to be construed that the feed chamber (111A) and drain chamber (111B) of the heat exchanger (101) may used interchangeably and in similar way the inlet (107) for heat exchanger (101) fluid and outlet (109) for the heat exchanger (101) fluid may also used interchangeably.
• Advantages of the embodiments of the present invention are illustrated herein:
[0043] In an embodiment, the heat exchanger (101) provides the better efficiency and improved processing ability. The thickness of glass lining of each tube (105) of the plurality of tube (105) is preferably 0.4-0.7 mm and the overall thickness of each tube (105) of the plurality of tube (105) with the glass lining is preferably 1-1.5 mm. Such optimum configuration of the plurality of the tubes (105) provides better heat exchange of the medium and ultimately increases the efficiency of the heat exchanger (101). Furthermore, such configuration provides faster heat exchange of the medium than any other heat exchanger (101).
[0044] The configuration of glassed line surface in inside surface of the shell (103) and outside surfaces of the plurality of the tubes (105), prevent form the effect of the toxic and corrosive chemicals (gases and liquids) and provides a much higher heat transfer area which is achieved by the plurality of tube (105) in the parallel forms without changing the length of the heat exchanger (101).
[0045] In an embodiment, the O-rings (129) provided between the perforation of the tube plate and each of the plurality of tube (105) makes firmly accommodation of the plurality of the tubes (105). Such firm configuration through the O-rings (129) provides the leakage proof joints in the heat exchanger (101) and prevents mixing of the heat exchanger medium and process material.
[0046] In an embodiment, the tube plate having a PTFE sheet (123) and PTFE plate (121). Such PTFE sheet (123) and PTFE plate (121) provides the lower thermal conductivity, which helps to prevent the leakage of the thermal energy from the heat exchanger (101) and increase the overall efficiency of the heat exchanger (101).
[0047] In summary, the heat exchanger (101) can work efficiently in higher flow rates and lesser heat transfer time. Furthermore, the heat exchanger (101) has glass lined surface inner surface of the shell (103) and outer surface of the plurality of tube (105), improves the efficiency and the life of the heat exchanger (101). In addition to, the use of the optimum size and thickness of the tubes (105) and the glass lined layer, the higher rate of heat exchange is possible with shell (103) and tube heat exchanger (101) the equipment size and provides the far smaller size than any other type of heat exchanger (101) of same capacity.
[0048] The terms "an embodiment", "embodiment", "embodiments", "the embodiment", "the embodiments", "one or more embodiments", "some embodiments", and "one embodiment" mean "one or more (but not all) embodiments of the invention(s)" unless expressly specified otherwise.
[0049] The terms "including", "comprising", “having” and variations thereof mean "including but not limited to", unless expressly specified otherwise.
[0050] The invention has been explained in relation to specific embodiment. It is inferred that the foregoing description is only illustrative of the present invention and it is not intended that the invention be limited or restrictive thereto. Many other specific embodiments of the present invention will be apparent to one skilled in the art from the foregoing disclosure. All substitution, alterations and modification of the present invention which come within the scope of the following claims are to which the present invention is readily susceptible without departing from the spirit of the invention. The scope of the invention should therefore be determined not with reference to the above description but should be determined with reference to appended claims along with full scope of equivalents to which such claims are entitled.

REFERENCE NUMERALS

101 Heat exchanger
103 Shell
105 plurality of tube
107 inlet
109 outlet
111A Feed chamber
111B Drain chamber
113 Baffle plates
115 Feed hose
117 Drain hose
119 Tube plates
121 PTFE plate
123 PTFE sheet
125 Metal plate
127 Metal ring
129 O-rings

 
, C , Claims:We Claim:
1. A glass lined heat exchanger (101) comprising,
an elongated tubular shell (103) having a heat exchanger region (110) positioned between tube plates (119), an inlet (107) formed there through for introducing a heat exchanger medium in to heat exchanger region (110) and an outlet (109) for withdrawing the heat exchanger medium from heat exchanger region (110);
a plurality of tube (105) disposed elongated in a parallel relationship within the shell (103) by passing through a perforated truncated baffle plate (113);
a tube plate (119) fitted at each end of the shell and having perforation corresponding to the each tube of plurality of tube (105), where both end of each tube (105) are fitted in the corresponding perforation of the tube plate (119); and
a feed chamber (111A) having a feed hose (115) for introducing a process material and a drain chamber (111B) having an drain hose (117) for withdrawing the process material, are axially disposed at opposite end of the shell (103);
wherein an inner surface of the shell (103) and an outer surface of each tube (105) are glass lined.
2. The glass lined heat exchanger (101) as claimed in claim 1, wherein an inner surface of the feed chamber (111A) is glass lined.
3. The glass lined heat exchanger (101) as claimed in claim 1, wherein an inner surface of the drain chamber (111B) is glass lined.
4. The glass lined heat exchanger (101) as claimed in claim 1, The glass lined heat exchanger (101) as claimed in claim 1, wherein an outer surface of truncated baffle plates (113) is glass lined.
5. The glass lined heat exchanger (101) as claimed in claim 1, wherein the plurality of truncated baffle plate (113) are spaced equidistantly and in alternative or spiral manner.
6. The glassed lined heat exchanger (101) as claimed in claim 1, wherein the plurality of truncated baffle plate (113) are perforated corresponding to the set of plurality of tube (105).
7. The glass lined heat exchanger (101) as claimed in claim 1, wherein the tube plates (119) comprises a Poly Tetra Fluoro Ethylene (PTFE) plate surrounded with the metal ring (127), a metal plate (125) and a PTFE sheet (123) disposed between the PTFE plate and the metal plate (125).
8. The glass lined heat exchanger (101) as claimed in claim 1, wherein the plurality of tube (105) is firmly fitted within corresponding perforation of the tube plate through an O-ring (129).
9. The glass lined tube exchanger as claimed in claim 1, wherein the O-ring (129) is made from the Poly Tetra Fluoro Ethylene (PTFE) material.
10. The glass lined tube exchanger as claimed in claim 1, wherein the O-ring (129) is made from the silicon material.
11. The glass lined heat exchanger (101) as claimed in claim 1, wherein the thickness of glass lining of each tube (105) is 0.4-0.7 mm.
12. The glass lined heat exchanger (101) as claimed in claim 1, wherein the thickness of each tube (105) with the glass lining is 1-1.5 mm.
13. The glass lined heat exchanger (101) as claimed in claim 1, wherein the outer diameter of each tube (105) is 24-26 mm.
14. The glass lined heat exchanger (101) as claimed in claim 1, wherein each tube (105) of the plurality of tube (105) made from the carbon steel.

Dated this on 13th Day of February, 2025