Anti-freezing heat exchange device for surface air cooler of all fresh air air conditioning unit

Abstract

The utility model relates to the technical field of surface air coolers, in particular to an anti-freezing heat exchange device for a surface air cooler of an all fresh air air conditioning unit, which is characterized in that a liquid inlet pipe is arranged at the left upper end of an anti-freezing liquid box, the rear side of the liquid inlet pipe is hermetically connected with a heat exchange box, and a heat supply pipeline is hermetically connected in the heat exchange box; according to the anti-freezing device, ethylene glycol anti-freezing liquid in the anti-freezing liquid tank can be pumped into the liquid inlet pipe under the action of the water pump, and the anti-freezing liquid is injected into the spiral heat exchange pipe through the liquid inlet pipe; meanwhile, heat exchange treatment can be carried out on anti-freezing liquid under the action of hot water in a heat supply pipeline of the boiler, so that the surface air cooler cannot be frozen to be damaged and cracked even if the temperature is not high enough, hot ethylene glycol can continuously and normally supply heat in a circulating mode, and it is ensured that a unit can normally operate in the coldest weather; therefore, the serious problem that the surface air cooler of the air conditioning unit is extremely prone to frost crack in cold winter is solved.

Description

Technical Field

[0001] The utility model relates to an antifreeze heat exchange device for a surface cooler of a fresh air air conditioning unit, belonging to the technical field of surface coolers. Background Art

[0002] The main function of the surface cooler of the fresh air air-conditioning unit of the experimental animal purification environment facility is to further heat the fresh air to the preset temperature after the fresh air enters the unit for preheating in winter. The heat and moisture exchange of the surface cooler is carried out under the action of the temperature difference and water vapor partial pressure difference between the main air and the boundary layer air close to the outer surface of the heat exchanger.

[0003] When the surface cooler of the existing fresh air air conditioning unit is in use, due to the cold weather in the north in winter, the temperature is low (sometimes -30℃), and the cold air with insufficient preheating temperature will often cause the surface cooler with water circulating inside to freeze and crack, causing unit failure and a sharp drop in the temperature of the animal room, seriously affecting the normal progress of animal experiments; and the existing liquid injected into the surface cooler contains alkaline substances, which can easily cause internal scale to grow after long-term use, which not only affects the heat exchange effect of the surface cooler, but also causes damage to the surface cooler. Utility Model Content

[0004] The purpose of the utility model is to provide an antifreeze heat exchange device for a surface cooler of a fresh air air conditioning unit to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fresh air air conditioning unit surface cooler antifreeze heat exchange device comprises a surface cooler body, an antifreeze tank is provided on the left side of the surface cooler body, a liquid inlet pipe is provided on the upper left end of the antifreeze tank, a heat exchange box is sealed on the rear side of the liquid inlet pipe, a heating pipe is sealed on the inside of the heat exchange box, a spiral heat exchange pipe is sealed on the inside of the heating pipe, the spiral heat exchange pipe is sealed to the liquid inlet pipe, the upper front side of the spiral heat exchange pipe is sealed to a cold season injection pipe, the front end of the cold season injection pipe is sealed to a guide box, the right end of the guide box is sealed to an insulation conduit, the right end of the insulation conduit is sealed to a filter box, and the filter box is sealed to the surface cooler body.

[0007] Furthermore, a drain solenoid valve is sealed between the surface cooler body and the antifreeze tank, and a hot season drain pipe is sealed at the front end of the drain solenoid valve.

[0008] Furthermore, a water pump is sealedly connected to the upper left end of the antifreeze liquid tank, and the water pump is sealedly connected to the liquid inlet pipe.

[0009] Furthermore, the left end of the guide box is sealed and connected to a hot season liquid injection pipe, the interior of the guide box is rotatably connected to a rotating guide block, the internal rear side of the rotating guide block is fixedly connected to a spring pin, the spring pin is slidably connected to the guide box, a T-shaped guide hole is opened inside the rotating guide block, and the upper end of the rotating guide block is fixedly connected to a turntable.

[0010] Furthermore, the upper end of the filter box is spirally connected with a threaded cover, the lower end of the threaded cover is rotatably connected with a dirt collecting frame, and the inner side of the dirt collecting frame is fixedly connected with a filter screen frame.

[0011] Furthermore, the lower end of the filter box is sealed and connected to a fixed frame, the inner upper side of the fixed frame is slidably connected to a pressure-bearing sealing block, the inner lower end of the fixed frame is fixedly connected to a fixed spring, the fixed spring and the pressure-bearing sealing block are fixedly connected, the pressure-bearing sealing block and the pollution collecting frame are slidably connected, the lower end of the pollution collecting frame is fixedly connected to a positioning strip, and the positioning strip and the pressure-bearing sealing block are slidably connected.

[0012] Furthermore, a filling plug is provided at the middle position of the upper end of the antifreeze liquid tank, and a drain plug is provided at the lower left end of the antifreeze liquid tank.

[0013] The beneficial effects of the utility model are:

[0014] The utility model can draw the ethylene glycol antifreeze in the antifreeze tank into the liquid inlet pipe by arranging a water pump, and inject the antifreeze into the spiral heat exchange tube through the liquid inlet pipe, and at the same time, with the action of hot water in the heating pipe of the boiler, the antifreeze can be heat exchanged, so that the antifreeze can enter the cold season liquid injection pipe after being heated, and the T-shaped guide hole can be rotated by rotating the turntable, so that the heated antifreeze can enter the surface cooler body through the heat preservation pipe. In this way, even if the temperature is not high enough, the surface cooler will not be frozen or cracked, so that the hot ethylene glycol can be circulated normally to supply heat continuously, ensuring that the unit is in the best condition. The utility model can operate normally even in cold weather, thus solving the serious problem that the surface cooler of the air-conditioning unit is very easy to freeze and crack in cold winter. The utility model can filter impurities in the antifreeze and impurities in the liquid in the hot season through the function of the filter frame, so as to avoid the formation of scale inside the surface cooler, and the dirt collecting frame and the filter frame can be taken out by spiral disassembly of the threaded cover to facilitate cleaning of impurities, and the pressure-bearing sealing block can be lifted up by the elastic extension of the fixed spring to avoid liquid leakage, and the dirt collecting frame can be positioned and limited by the function of the positioning card strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a front view of an antifreeze heat exchange device for a surface cooler of a fresh air air conditioning unit of the utility model;

[0017] Figure 2 The utility model is a kind of antifreeze heat exchange device for the surface cooler of the fresh air air conditioning unit Figure 1 Schematic diagram of the installation structure at A;

[0018] Figure 3 This is a cross-sectional view of the installation structure of the liquid inlet pipe, heat exchanger and heating pipe of the antifreeze heat exchange device of the surface cooler of the fresh air air conditioning unit of the utility model;

[0019] Figure 4 It is a top-sectional view of the installation structure of a guide box, a heat preservation conduit and a hot season liquid injection pipe of an antifreeze heat exchange device of a surface cooler of a fresh air air conditioning unit of the utility model;

[0020] Figure 5 This is a cross-sectional view of the installation structure of the heat preservation conduit, the filter box and the fixing frame of the antifreeze heat exchange device of the surface cooler of the fresh air air conditioning unit of the utility model;

[0021] Numbers in the figure: 1. condenser body; 2. antifreeze tank; 3. liquid inlet pipe; 4. heat exchanger box; 5. heating pipe; 6. spiral heat exchanger tube; 7. cold season liquid injection pipe; 8. guide box; 9. insulation guide tube; 10. filter box; 11. drain solenoid valve; 12. hot season drain pipe; 13. water pump; 14. hot season liquid injection pipe; 15. rotating guide block; 16. spring pin; 17. T-type guide hole; 18. turntable; 19. threaded cover; 20. dirt collecting frame; 21. filter frame; 22. fixed frame; 23. pressure-bearing sealing block; 24. fixing spring; 25. positioning card strip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1 Please refer to Figure 1-Figure 5 , the utility model provides a technical solution:

[0024] A surface cooler antifreeze heat exchange device for a fresh air air conditioning unit comprises a surface cooler body 1, an antifreeze tank 2 is arranged on the left side of the surface cooler body 1, a liquid inlet pipe 3 is arranged on the upper left end of the antifreeze tank 2, a heat exchange box 4 is sealedly connected to the rear side of the liquid inlet pipe 3, a heating pipe 5 is sealedly connected to the interior of the heat exchange box 4, a spiral heat exchange pipe 6 is sealedly connected to the interior of the heating pipe 5, the spiral heat exchange pipe 6 is sealedly connected to the liquid inlet pipe 3, a cold season liquid injection pipe 7 is sealedly connected to the front side of the upper end of the spiral heat exchange pipe 6, and the front end of the cold season liquid injection pipe 7 is sealedly connected to the A guide box 8 is connected, the right end of the guide box 8 is sealed and connected with a heat preservation pipe 9, a discharge solenoid valve 11 is sealed and connected between the surface cooler body 1 and the antifreeze tank 2, the front end of the discharge solenoid valve 11 is sealed and connected with a hot season discharge pipe 12, the upper left end of the antifreeze tank 2 is sealed and connected with a water pump 13, the water pump 13 is sealed and connected with the liquid inlet pipe 3, the left end of the guide box 8 is sealed and connected with a hot season injection pipe 14, the inside of the guide box 8 is rotatably connected with a rotating guide block 15, and the inner rear side of the rotating guide block 15 is fixedly connected with a spring pin 16, the spring pin 16 is slidably connected to the guide box 8, a T-shaped guide hole 17 is opened inside the rotating guide block 15, and a turntable 18 is fixedly connected to the upper end of the rotating guide block 15. A liquid injection plug is provided at the middle position of the upper end of the antifreeze tank 2, and a liquid discharge plug is provided at the lower left end of the antifreeze tank 2. The ethylene glycol antifreeze in the antifreeze tank 2 can be pumped into the liquid inlet pipe 3 through the water pump 13, and the antifreeze is injected into the spiral heat exchange tube 6 through the liquid inlet pipe 3. At the same time, with the action of the hot water in the heating pipe 5 of the boiler The antifreeze can be subjected to heat exchange treatment so that the antifreeze can enter the cold season injection pipe 7 after being heated, and the T-shaped guide hole 17 can be rotated by rotating the turntable 18, so that the heated antifreeze can enter the surface cooler body 1 through the insulation pipe 9. In this way, even if the temperature is not high enough, the surface cooler will not be frozen or cracked, so that the hot ethylene glycol can be continuously circulated and normally supplied with heat, ensuring that the unit can operate normally in the coldest weather, thereby solving the serious problem that the surface cooler of the air-conditioning unit is very easy to freeze and crack in the cold winter.

[0025] Example 2 Please refer to Figure 1 , Figure 2 and Figure 5The difference between this embodiment and the first embodiment is that: the right end of the heat preservation conduit 9 is sealedly connected with the filter box 10, the filter box 10 is sealedly connected with the surface cooler body 1, the upper end of the filter box 10 is spirally connected with the threaded cover 19, the lower end of the threaded cover 19 is rotatably connected with the dirt collecting frame 20, the inner side of the dirt collecting frame 20 is fixedly connected with the filter screen frame 21, the lower end of the filter box 10 is sealedly connected with the fixed frame 22, the upper side of the inner part of the fixed frame 22 is slidably connected with the pressure-bearing blocking block 23, the lower end of the inner part of the fixed frame 22 is fixedly connected with the fixing spring 24, the fixing spring 24 is fixedly connected with the pressure-bearing blocking block 23, and the pressure-bearing blocking block 23 and the dirt collecting frame 20 are slidably connected. The dirt collecting frame 20 is dynamically connected, and a positioning clip 25 is fixedly connected to the lower end of the dirt collecting frame 20, and the positioning clip 25 is slidably connected to the pressure-bearing sealing block 23. The impurities in the antifreeze and the impurities in the hot season liquid can be filtered through the provided filter frame 21 to avoid scale formation inside the surface cooler. The dirt collecting frame 20 and the filter frame 21 can be taken out by spirally disassembling the threaded cover 19 to facilitate cleaning of the impurities, and the pressure-bearing sealing block 23 can be lifted up by the elastic extension of the provided fixed spring 24 to avoid liquid leakage, and the dirt collecting frame 20 can be positioned and limited by the provided positioning clip 25.

[0026] Working principle of the utility model: when the device is in use, the ethylene glycol antifreeze in the antifreeze tank 2 can be pumped into the liquid inlet pipe 3 through the water pump 13, and the antifreeze is injected into the spiral heat exchange tube 6 through the liquid inlet pipe 3. At the same time, with the action of hot water in the heating pipe 5 of the boiler, the antifreeze can be heat exchanged, so that the antifreeze can enter the cold season injection pipe 7 after heating, and the T-shaped guide hole 17 can be rotated by rotating the turntable 18, so that the heated antifreeze can enter the surface cooler body 1 through the insulation pipe 9, so that even if the temperature is not high enough, the surface cooler will not be frozen or cracked, so that the hot ethylene glycol can be continuously and normally circulated for supply Heat ensures that the unit can operate normally in the coldest weather, thereby solving the serious problem that the surface cooler of the air-conditioning unit is very easy to freeze and crack in the cold winter, and the impurities in the antifreeze and the impurities in the hot season liquid can be filtered through the provided filter frame 21 to avoid scale generation inside the surface cooler, and the dirt collecting frame 20 and the filter frame 21 can be taken out by spirally disassembling the threaded cover 19 to facilitate cleaning of impurities, and the pressure-bearing sealing block 23 can be lifted up by the elastic extension of the provided fixing spring 24 to avoid liquid leakage, and the dirt collecting frame 20 can be positioned and limited by the provided positioning card strip 25.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface cooler antifreeze heat exchange device for a fresh air air conditioning unit, comprising a surface cooler body (1), characterized in that: An antifreeze tank (2) is provided on the left side of the cooler body (1); a liquid inlet pipe (3) is provided at the upper left end of the antifreeze tank (2); a heat exchange box (4) is sealedly connected to the rear side of the liquid inlet pipe (3); a heating pipe (5) is sealedly connected to the interior of the heat exchange box (4); a spiral heat exchange tube (6) is sealedly connected to the interior of the heating pipe (5); the spiral heat exchange tube (6) and the liquid inlet pipe (3) are sealedly connected; a cold season liquid injection tube (7) is sealedly connected to the front side of the upper end of the spiral heat exchange tube (6); a guide box (8) is sealedly connected to the front end of the cold season liquid injection tube (7); a heat insulation tube (9) is sealedly connected to the right end of the guide box (8); a filter box (10) is sealedly connected to the cooler body (1).

2. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: A drain solenoid valve (11) is sealed between the surface cooler body (1) and the antifreeze tank (2), and a hot season drain pipe (12) is sealed at the front end of the drain solenoid valve (11).

3. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: The upper left end of the antifreeze liquid tank (2) is sealed with a water pump (13), and the water pump (13) is sealed with the liquid inlet pipe (3).

4. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: The left end of the guide box (8) is sealedly connected to a hot season liquid injection pipe (14); the guide box (8) is rotatably connected to a rotating guide block (15); the rear side of the rotating guide block (15) is fixedly connected to a spring pin (16); the spring pin (16) is slidably connected to the guide box (8); a T-shaped guide hole (17) is provided inside the rotating guide block (15); and a rotating disk (18) is fixedly connected to the upper end of the rotating guide block (15).

5. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: The upper end of the filter box (10) is spirally connected to a threaded cover (19), the lower end of the threaded cover (19) is rotatably connected to a dirt collection frame (20), and the inner side of the dirt collection frame (20) is fixedly connected to a filter screen frame (21).

6. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: The lower end of the filter box (10) is sealedly connected to a fixed frame (22), the upper inner side of the fixed frame (22) is slidably connected to a pressure-bearing sealing block (23), the lower inner end of the fixed frame (22) is fixedly connected to a fixed spring (24), the fixed spring (24) and the pressure-bearing sealing block (23) are fixedly connected, the pressure-bearing sealing block (23) and the dirt collecting frame (20) are slidably connected, the lower end of the dirt collecting frame (20) is fixedly connected to a positioning clip (25), and the positioning clip (25) and the pressure-bearing sealing block (23) are slidably connected.

7. The antifreeze heat exchange device for the surface cooler of a fresh air air conditioning unit according to claim 1, characterized in that: A liquid filling plug is provided at the middle position of the upper end of the antifreeze liquid tank (2), and a liquid drain plug is provided at the lower left end of the antifreeze liquid tank (2).

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