Hot wall type heat exchanger for gas-gas heat exchange
By designing a heat wall heat exchanger for gas-gas heat exchange, the problems of fresh air pollution and energy waste in existing air-conditioning equipment are solved, efficient long-distance heat exchange of gaseous fluids is achieved, and equipment volume and operating costs are reduced.
Patent Information
- Application Number
- CN202421612646.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-09
AI Technical Summary
In existing air-conditioning equipment, plate heat exchangers are prone to leaking between fresh air and old air, causing fresh air pollution and energy waste. The heat pipe increases costs and has low heat exchange efficiency, especially in large temperature differences.
A heat wall heat exchanger for air-gas heat exchange is designed, including a core and a bellows. The left and right ends of the upper and lower plates are connected by a through-passing plate, a condensing end space and an evaporating end space are set, and an upper and lower windshield plates are set on both sides. Through holes are opened on the through-passing plates and the partition plates, and the core is connected to the through-passing plates, partition plates, upper and lower windshield plates through the through-passing plates, partition plates, upper and lower windshield plates.
Long-distance heat exchange between two gaseous fluids is achieved, which avoids the problem of leaks between the heat exchange fluids, and reduces the cycle resistance of the phase-change fluid of the heat transfer medium, improves the heat transfer speed, and reduces the equipment volume and operating costs.
Smart Images
Figure CN223021012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fluid machinery, in particular to a hot wall heat exchanger for air-to-air heat exchange. Background Art
[0002] The current air cooling equipment mainly uses finned tube heat exchangers, serpentine finned tube heat exchangers, heat pipe heat exchangers, or plate heat exchangers, while the partition heat exchange solution is only suitable for open cooling or cooling the air. The disadvantages of using a plate heat exchanger as a fresh air unit are also obvious. It is easy for fresh air and old air to leak into each other, causing fresh air to be polluted, and also wasting energy. The use of heat pipes will increase costs, and the heat exchange efficiency is not high for large temperature differences. When the siphon capillary is contaminated and blocked, its heat exchange efficiency is greatly reduced. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a hot wall heat exchanger for air-to-air heat exchange.
[0004] The utility model provides the following technical solutions: a hot wall heat exchanger for air-to-air heat exchange, comprising a core and a bellows, the bellows comprising an upper plate and a lower plate arranged horizontally, the left and right ends of the upper plate and the lower plate being connected by a through plate, two partition plates are arranged at intervals in the middle of the upper plate and the lower plate along the vertical direction, a condensation end space and an evaporation end space are formed between the two partition plates and the adjacent through plates respectively, upper wind shield plates and lower wind shield plates are staggered at the connection points of the condensation end space and the evaporation end space with the upper plate and the lower plate on both sides; through holes are relatively opened on the through plates and the partition plates, the core is passed through the through holes and is connected to the through plates, the partition plates, the upper wind shield plates and the lower wind shield plates respectively.
[0005] Preferably, the core body includes a pressure-bearing wall, a hot wall component, a brazing block, a sealing brazing rod, heat exchange fins and a connecting piece. A plurality of groups of hot wall components are arranged between the relatively arranged pressure-bearing walls. A brazing block is clamped in the middle of the hot wall component, and a sealing brazing rod is clamped at both ends. Heat exchange fins are arranged between both ends of the brazing block and the sealing brazing rods, and the heat exchange fins are evenly distributed in the condensation end space and the evaporation end space respectively. A connecting piece is arranged on the outside of the hot wall component, and the connecting piece is used for vacuuming and infusing phase change fluid medium.
[0006] Preferably, an air inlet and an air outlet are respectively provided between the front and rear sides of the upper plate and the lower plate, and a fan is provided at the air outlet.
[0007] Preferably, the upper end of the upper wind shield plate is welded to the upper plate, and a gap of less than 2 mm is left between the lower end of the upper wind shield plate and the upper end of the pressure wall; the lower end of the lower wind shield plate is welded to the lower plate, and a gap of less than 2 mm is left between the upper end of the lower wind shield plate and the lower end of the pressure wall.
[0008] Preferably, the spacing between the partition plates is less than or equal to the width of the brazing block, and the connection space between the partition plates and the brazing block is filled with filler.
[0009] Preferably, an upper air duct is formed between the upper plate, the upper wind shield plate and the upper end of the pressure-bearing wall; and a lower air duct is formed between the lower plate, the lower wind shield plate and the lower end of the pressure-bearing wall.
[0010] Compared with the prior art, the utility model has the following beneficial effects:
[0011] (1) The utility model connects the left and right ends of the upper plate and the lower plate through a through plate, and two partition plates are arranged in the middle of the upper plate and the lower plate in the vertical direction, and the two partition plates respectively form a condensation end space and an evaporation end space with the adjacent through plates, and upper wind shield plates and lower wind shield plates are staggered at the connection points between the condensation end space and the evaporation end space and the upper plate and the lower plate respectively; through holes are opened on the through plates and the partition plates relative to each other, and the core body is respectively connected to the through plates, the partition plates, the upper wind shield plates and the lower wind shield plates through the through holes. The utility model can realize long-distance heat exchange between two heat-exchanging gaseous fluids like a heat pipe, without leakage problems between the heat-exchanging fluids and easy contamination of the capillary tubes inside the heat pipe. In addition, the use of a hot wall heat exchanger as the heat exchange element for two gaseous fluids has a strong advantage, because the circulation resistance of the phase-change fluid of the heat transfer medium inside the hot wall part is much smaller than that of the phase-change fluid inside the heat pipe. Special channels for liquid and gas phase fluids are respectively arranged inside the hot wall part. The gas and liquid phases will not interfere with each other during high-speed circulation, and the heat transfer speed will be very fast, thereby reducing the size of the equipment and saving equipment operating costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is an exploded view of the utility model;
[0013] Figure 2 This is one of the cross-sectional views of the utility model;
[0014] Figure 3 This is the second cross-sectional view of the utility model. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0016] like Figures 1 to 3As shown, a hot wall heat exchanger for air-to-air heat exchange includes a core 1, a bellows, a lower plate 2, an upper plate 3, a partition plate 4, a through hole 5, an upper wind shield 6, a lower wind shield 7, a pressure wall 1.8, a hot wall part 1.1, a brazing block 1.2, a sealing brazing rod 1.3, a heat exchange fin 1.5, a connecting part 1.7, an air inlet 8, an air outlet 9, a fan 10, an upper air duct 11, a lower air duct 12, a bellows 13, and a through plate 14.
[0017] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0019] like Figures 1 to 3 As shown, the bellows 13 includes a horizontally arranged upper plate 3 and a lower plate 2, the left and right ends of the upper plate 3 and the lower plate 2 are connected by a through plate 14, and two partition plates 4 are arranged in the middle of the upper plate 3 and the lower plate 2 in the vertical direction, and a condensation end space and an evaporation end space are formed between the two partition plates 4 and the adjacent through plates 14, and upper wind shield plates 6 and lower wind shield plates 7 are staggered at the connection points between the condensation end space and the evaporation end space and the upper plate 3 and the lower plate 2 on both sides; through holes 5 are relatively opened on the through plate 14 and the partition plate 4, and the core 1 is penetrated by the through hole 5 and is connected with the through plate 14, the partition plate 4, the upper wind shield plate 6 and the lower wind shield plate 7 respectively.
[0020] The core body 1 includes a pressure-bearing wall surface 1.8, a hot wall member 1.1, a brazing block 1.2, a sealing brazing electrode 1.3, heat exchange fins 1.5, and a connecting member 1.7. Between the relatively arranged pressure-bearing wall surfaces 1.8, multiple groups of hot wall members 1.1 are spaced. A brazing block 1.2 is clamped in the middle of the hot wall member 1.1, and sealing brazing electrodes 1.3 are clamped at both ends. Heat exchange fins 1.5 are provided between both ends of the brazing block 1.2 and the sealing brazing electrodes 1.3. The heat exchange fins 1.5 are evenly distributed in the condensation end space and the evaporation end space respectively; a connecting member 1.7 is provided outside the hot wall member 1.1, and the connecting member 1.7 is used for sucking vacuum and filling the phase change fluid medium.
[0021] The upper end of the upper wind deflector 6 is welded to the upper plate 3, and a gap of less than 2 mm is left between the lower end of the upper wind deflector 6 and the upper end of the pressure-bearing wall surface 1.8; the lower end of the lower wind deflector 7 is welded to the lower plate 2, and a gap of less than 2 mm is left between the upper end of the lower wind deflector 7 and the lower end of the pressure-bearing wall surface 1.8. To avoid working interference.
[0022] An air inlet 8 and an air outlet 9 are respectively formed between the front and rear sides of the upper plate 3 and the lower plate 2. A fan 10 is provided at the air outlet 9. An upper air duct 11 is formed between the upper plate 3, the upper wind deflector 6, and the upper end of the pressure-bearing wall surface 1.8; a lower air duct 12 is formed between the lower plate 2, the lower wind deflector 7, and the lower end of the pressure-bearing wall surface 1.8 for guiding air.
[0023] The distance between the partition plates 4 is less than or equal to the width of the brazing block 1.2, and the connection space between the partition plates 4 and the brazing block 1.2 is filled with a filler to prevent the two heat exchange fluids from leaking into each other.
[0024] As Figure 2 shown, the present invention provides a setting direction of the upper wind deflector 6 and the lower wind deflector 7. If the upper wind deflector 6 faces upward on the left side of the pressure-bearing wall surface 1.8 of the core body 1, then its lower wind deflector 7 must face downward on the right side of the other pressure-bearing wall surface 1.8, and its lower air duct 12 is the air inlet area space, and the upper air duct 11 is the air outlet area space.
[0025] As Figure 3 shown, the present invention provides another setting direction of the upper wind deflector 6 and the lower wind deflector 7. If the upper wind deflector 6 is at the upper edge on the right side of the pressure-bearing wall surface 1.8 of the core body 1, then its lower wind deflector 7 must be at the lower edge on the left side of the pressure-bearing wall surface 1.8, and its lower air duct 12 is the air outlet area space, and the upper air duct 11 is the air inlet area space.
[0026] The utility model can achieve long-distance heat exchange between two heat-exchanging gaseous fluids like a heat pipe, without the problem of leakage between the heat-exchanging fluids, and without the problem that the internal capillary of the heat pipe is easily contaminated. Moreover, using a hot-wall heat exchanger as the heat-exchanging element for the two gaseous fluids has great advantages, because the circulation resistance of the phase-change fluid of the heat-transfer medium inside the hot-wall part 1.1 is much smaller than that of the phase-change fluid inside the heat pipe. Special channels for the liquid phase and the gas phase fluids are provided inside the hot-wall part 1.1, and the high-speed circulation of the gas phase and the liquid phase will not interfere with each other, and its heat-transfer speed will be very fast, so that the equipment volume can be reduced, and the equipment operation cost can also be saved.
[0027] The utility model has a compact structure and high heat-exchange efficiency, and there is no pollution caused by mutual leakage between the heat-exchanging fluids, and it is especially suitable for being used as the key heat-exchanging core component of a fresh air unit.
[0028] The above embodiments are only the preferred embodiments of the utility model, and the scope of the rights of the utility model cannot be limited thereby. Therefore, the modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the utility model still fall within the scope covered by the utility model.
Claims
1. A hot wall heat exchanger for gas-to-gas heat exchange, characterized in that: The invention comprises a core body (1) and a bellows (13), wherein the bellows (13) comprises an upper plate (3) and a lower plate (2) which are arranged horizontally, wherein the left and right ends of the upper plate (3) and the lower plate (2) are connected via a through plate (14), wherein two partition plates (4) are arranged at intervals in the vertical direction in the middle of the upper plate (3) and the lower plate (2), wherein a condensation end space and an evaporation end space are formed between the two partition plates (4) and the adjacent through plates (14), and an upper wind shield plate (6) and a lower wind shield plate (7) are arranged staggered at the connection points between the condensation end space and the evaporation end space and the upper plate (3) and the lower plate (2); through holes (5) are provided on the through plates (14) and the partition plates (4) in opposite directions, and the core body (1) is passed through the through holes (5) and is connected to the through plates (14), the partition plates (4), the upper wind shield plate (6) and the lower wind shield plate (7) respectively.
2. The hot wall heat exchanger for gas-to-gas heat exchange according to claim 1, characterized in that: The core (1) comprises a pressure-bearing wall surface (1.8), a hot wall component (1.1), a brazing block (1.2), a sealing brazing rod (1.3), heat exchange fins (1.5) and a connecting piece (1.7); a plurality of groups of hot wall components (1.1) are arranged at intervals between the pressure-bearing walls (1.8) arranged opposite to each other; a brazing block (1.2) is clamped in the middle of the hot wall component (1.1) and a sealing brazing rod (1.3) is clamped at both ends; heat exchange fins (1.5) are arranged between both ends of the brazing block (1.2) and the sealing brazing rod (1.3); the heat exchange fins (1.5) are evenly distributed in the condensation end space and the evaporation end space; a connecting piece (1.7) is arranged on the outside of the hot wall component (1.1); the connecting piece (1.7) is used for vacuuming and injecting phase change fluid medium.
3. The hot wall heat exchanger for gas-to-gas heat exchange according to claim 2, characterized in that: An air inlet (8) and an air outlet (9) are respectively provided between the front and rear sides of the upper plate (3) and the lower plate (2), and a fan (10) is provided at the air outlet (9).
4. The hot wall heat exchanger for gas-to-gas heat exchange according to claim 3, characterized in that: The upper end of the upper wind shield plate (6) is welded to the upper plate (3), and a gap of less than 2 mm is left between the lower end of the upper wind shield plate (6) and the upper end of the pressure-bearing wall surface (1.8); the lower end of the lower wind shield plate (7) is welded to the lower plate (2), and a gap of less than 2 mm is left between the upper end of the lower wind shield plate (7) and the lower end of the pressure-bearing wall surface (1.8).
5. The hot wall heat exchanger for gas-to-gas heat exchange according to claim 4, characterized in that: The spacing between the partition plates (4) is less than or equal to the width of the brazing block (1.2), and the connection space between the partition plates (4) and the brazing block (1.2) is filled with filler.
6. The hot wall heat exchanger for gas-to-gas heat exchange according to claim 5, characterized in that: An upper air duct (11) is formed between the upper plate (3), the upper wind shield (6) and the upper end of the pressure-bearing wall surface (1.8); and a lower air duct (12) is formed between the lower plate (2), the lower wind shield (7) and the lower end of the pressure-bearing wall surface (1.8).