Heat exchange device for improving dehumidification circulation of heat pump

Abstract

The utility model relates to the technical field of heat pump dehumidification, and discloses a heat exchange device for improving heat pump dehumidification circulation, which comprises a machine body, an air inlet and an air outlet are respectively arranged at two ends of the machine body, and an air feeder, a surface air cooler and a U-shaped dehumidification heat pipe component are respectively and fixedly arranged in the machine body. The U-shaped dehumidification heat pipe assembly comprises an evaporation precooler and a heat pipe condensation reheater, and side protection plates are fixedly installed on the front side of the evaporation precooler and the front side of the heat pipe condensation reheater. A first heat pipe and a second heat pipe are arranged in an evaporation precooler and a heat pipe condensation reheater of the device respectively, the first heat pipe and the second heat pipe are communicated through an evaporation pipe and a backflow pipe, and a refrigerant of the first heat pipe absorbs heat to be evaporated and vaporized, enters the second heat pipe along the evaporation pipe and releases heat at the position of the second heat pipe. The air which is deeply cooled and dehumidified through the surface air cooler is heated again, then a refrigerant is liquefied and guided into the first heat pipe along the return pipe, and circulating heat transfer is conducted on the environment on the front side and the rear side of the surface air cooler.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat pump dehumidification technical field, concretely is a kind of improve heat pump dehumidification circulating heat exchange device. BACKGROUND

[0002] In the air supply working process in fresh air dehumidifier, the air from the air inlet of outside, after the cooling of surface cooler, liquid in evaporator absorbs heat and vaporizes, thereby the process of recooling air, after reheating coil, air is heated to the temperature required, and discharged to indoor through air outlet, such as prior art, the patent file with announcement number CN215723755U discloses a U-shaped dehumidification heat pipe applied in double-cold-source fresh air dehumidifier, including dehumidifier shell, the left and right sides of dehumidifier shell are respectively provided with air inlet and air outlet, the filter screen, surface cooler, evaporator, reheating coil and air supply fan are sequentially arranged in dehumidifier shell from air inlet to air outlet along the direction of gas flow, and the U-shaped dehumidification heat pipe body is inserted into the left and right sides of surface cooler and evaporator.In the cooling process of entering air, the freon of left U-shaped dehumidification heat pipe body absorbs heat and vaporizes, which further reduces the temperature, and the vaporized freon of right side liquefies when meeting cold air, which releases heat and has the effect of re-warming air.

[0003] The U-shaped dehumidification heat pipe structure proposed in the above scheme is arranged in vertical direction, which is not conducive to the circulation of refrigerant medium in the heat pipe at both ends of the U-shaped dehumidification heat pipe, resulting in that the energy transfer of the evaporation pre-cooling section and the heat pipe condensation reheating section of the U-shaped dehumidification heat pipe is not ideal, and further improvement is needed. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of improve heat pump dehumidification circulating heat exchange device to solve the problems proposed in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of improve heat pump dehumidification circulating heat exchange device, including body, the two ends of body are air inlet and air outlet respectively, the inside of body is respectively fixedly installed with air supply fan, surface cooler and U-shaped dehumidification heat pipe assembly, the U-shaped dehumidification heat pipe assembly includes evaporative pre-cooler and heat pipe condensation reheater, evaporative pre-cooler and heat pipe condensation reheater are fixedly installed with side guard plate on the front side, and surface cooler is arranged between evaporative pre-cooler and heat pipe condensation reheater region;

[0006] The first heat pipe is fixedly arranged in the interior of the evaporative pre-cooler, the second heat pipe is fixedly arranged in the interior of the heat pipe condenser and reheater, the evaporative pipe and the reflux pipe are fixedly arranged in the interior of the side guard plate respectively, the first heat pipe and the second heat pipe are communicated through the evaporative pipe and the reflux pipe, the refrigerant circulates between the first heat pipe and the second heat pipe, and energy transmission is realized by phase change of the refrigerant itself.

[0007] In some embodiments, the evaporative pre-cooler and the heat pipe condenser and reheater are identical in structure, and each comprises a frame body, a plurality of heat-conducting sheets are fixedly arranged in the interior of the frame body, and the first heat pipe or the second heat pipe is arranged across the front and back sides of the frame body and is fixedly connected with the heat-conducting sheets.

[0008] In some embodiments, the evaporative pre-cooler is fixedly arranged with a first drainage pipe in the interior thereof, the frame body of the evaporative pre-cooler is fixedly arranged with a first three-way pipe at the back side thereof, the back end of the first drainage pipe is communicated with the first three-way pipe, there are two first heat pipes, and the back ends of the two first heat pipes are communicated with the first three-way pipe.

[0009] In some embodiments, the heat pipe condenser and reheater is fixedly arranged with a second drainage pipe in the interior thereof, the frame body of the heat pipe condenser and reheater is fixedly arranged with a second three-way pipe at the back side thereof, the back end of the second drainage pipe is communicated with the second three-way pipe, there are two second heat pipes, and the back ends of the two second heat pipes are communicated with the second three-way pipe.

[0010] In some embodiments, there are two evaporative pipes, the two ends of the two evaporative pipes are fixedly connected with and communicated with the front ends of the two first heat pipes and the front ends of the two second heat pipes respectively, the two ends of the reflux pipe are fixedly connected with and communicated with the front ends of the first drainage pipe and the second drainage pipe respectively, the refrigerant in the first heat pipe evaporates and vaporizes, the vaporized refrigerant flows into the second heat pipe through the two evaporative pipes in parallel, and the flow of the refrigerant is ensured smooth. Advantages

[0011] The utility model provides a kind of improve heat pump dehumidification cycle heat exchange device, with following advantages:

[0012] 1.The improve heat pump dehumidification cycle heat exchange device, first heat pipe and second heat pipe are arranged in evaporative pre-cooler and heat pipe condenser and reheater respectively, first heat pipe and second heat pipe are communicated through evaporative pipe and reflux pipe, refrigerant in first heat pipe absorbs heat and evaporates, along evaporative pipe into second heat pipe, release heat at second heat pipe, air that is deeply cooled and dehumidified by surface cooler is re-heated, then refrigerant liquefies along reflux pipe into first heat pipe, realize heat transfer to the environment before and after surface cooler.

[0013] 2. This improved heat pump dehumidification circulation heat exchange device achieves the connection of the first and second heat pipes by setting up two evaporation pipes and one return pipe. The refrigerant in the first heat pipe evaporates and vaporizes, and the volume of the evaporated and vaporized refrigerant increases. It enters the second heat pipe through the two evaporation pipes in parallel, ensuring its smooth flow. After the refrigerant in the second heat pipe releases heat, it forms a liquid and flows back into the first heat pipe along the return pipe, which greatly improves the efficiency of refrigerant circulation and enhances the heat transfer capacity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 A schematic diagram of the three-dimensional structure of a U-shaped dehumidifying heat pipe assembly (I);

[0016] Figure 3 Schematic diagram of the three-dimensional structure of the U-shaped dehumidification heat pipe assembly (II);

[0017] Figure 4 This is a schematic diagram of the connection between the first heat pipe and the second heat pipe.

[0018] In the diagram: 1. Body, 2. Air inlet, 3. Air outlet, 4. Blower, 5. Evaporator precooler, 6. Heat pipe condenser reheater, 7. Side guard plate, 8. Surface cooler, 9. First heat pipe, 10. Second heat pipe, 11. Evaporator pipe, 12. Return pipe, 13. Frame, 14. Heat-conducting plate, 15. First drain pipe, 16. First tee pipe, 17. Second drain pipe, 18. Second tee pipe, 19. Filter bag, 20. Heat exchange mechanism. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 This utility model provides a technical solution: an improved heat pump dehumidification circulation heat exchange device, comprising a body 1, with an air inlet 2 and an air outlet 3 at its two ends, respectively. Filter bags 19 are provided on the inner sides of both the air inlet 2 and the air outlet 3. A blower 4, a surface cooler 8, a heat exchange mechanism 20, and a U-shaped dehumidification heat pipe assembly are fixedly installed inside the body 1. Figure 1 As shown.

[0021] Apart from the U-shaped dehumidifying heat pipe assembly, the other components inside the unit 1 are existing technologies and will not be described in detail here. The U-shaped dehumidifying heat pipe assembly will be described in detail below.

[0022] The U-shaped dehumidification heat pipe assembly includes an evaporator precooler 5 and a heat pipe condenser reheater 6. A side guard plate 7 is fixedly installed on the front side of the evaporator precooler 5 and the heat pipe condenser reheater 6. A surface cooler 8 is located in the area between the evaporator precooler 5 and the heat pipe condenser reheater 6.

[0023] The first heat pipe 9 is fixedly installed inside the evaporator precooler 5, the second heat pipe 10 is fixedly installed inside the heat pipe condenser reheater 6, and the evaporator 11 and the return pipe 12 are fixedly installed inside the side guard plate 7 respectively. The first heat pipe 9 and the second heat pipe 10 are connected through the evaporator 11 and the return pipe 12.

[0024] Specifically, the evaporator precooler 5 and the heat pipe condenser reheater 6 have the same structure, both including a frame 13. Several heat-conducting plates 14 are fixedly installed inside the frame 13. The first heat pipe 9 or the second heat pipe 10 passes through the front and rear sides of the frame 13, and the first heat pipe 9 or the second heat pipe 10 is fixedly connected to the heat-conducting plates 14.

[0025] The evaporator precooler 5 has a first drain pipe 15 fixedly installed inside, and a first tee pipe 16 fixedly installed on the rear side of the frame 13 of the evaporator precooler 5. The rear end of the first drain pipe 15 is connected to the first tee pipe 16. There are two first heat pipes 9, and the rear ends of the two first heat pipes 9 are connected to the first tee pipe 16.

[0026] The heat pipe condenser reheater 6 has a second drain pipe 17 fixedly installed inside, and a second tee pipe 18 fixedly installed on the rear side of the frame 13 of the heat pipe condenser reheater 6. The rear end of the second drain pipe 17 is connected to the second tee pipe 18. There are two second heat pipes 10, and the rear ends of both second heat pipes 10 are connected to the second tee pipe 18.

[0027] There are two evaporator tubes 11. The two ends of the two evaporator tubes 11 are fixedly connected and connected to the front ends of the two first heat pipes 9 and the two second heat pipes 10, respectively. The two ends of the return pipe 12 are fixedly connected and connected to the front ends of the first guide pipe 15 and the second guide pipe 17, respectively.

[0028] Heat pipe principle:

[0029] In the U-shaped dehumidifying heat pipe assembly, after the first heat pipe 9, the second heat pipe 10, the evaporator 11, the return pipe 12, the first drain pipe 15, and the second drain pipe 17 are evacuated to a high vacuum state, an appropriate amount of environmentally friendly refrigerant is filled in. The refrigerant inside the pipe senses the external temperature difference, and the refrigerant on the high-temperature side evaporates and vaporizes (the high-temperature side refers to the side of the evaporator precooler 5), transferring heat to the low-temperature side to release heat and forming a liquid state (the low-temperature side refers to the side of the heat pipe condenser reheater 6). At the same time, it relies on its own gravity and capillary force to carry the cold energy on the low-temperature side to the high-temperature side to release the cold energy, thus continuously evaporating and condensing, so that energy is transferred uninterruptedly. This process does not require external kinetic energy assistance and relies entirely on the phase change of the refrigerant itself for energy transfer.

[0030] like Figure 1 As shown, the fresh air or the high-temperature and high-humidity air mixed with fresh and return air entering the unit 1 first passes through the first heat pipe 9 of the evaporative precooler 5 for precooling and cooling, which lowers the temperature and increases the relative humidity. Then it passes through the surface cooler 8 for deep cooling and dehumidification. Since the dehumidification process is a cooling process, the air temperature after passing through the surface cooler is too low and needs to be heated before it can be delivered. Therefore, it passes through the second heat pipe 10 of the heat pipe condenser reheater 6 for reheating and heating, which raises the air temperature and lowers the relative humidity (generally the relative humidity is 60%), thus completing the entire air handling process.

[0031] This improved heat pump dehumidification circulation heat exchange device has a first heat pipe 9 and a second heat pipe 10 installed in the evaporator precooler 5 and the heat pipe condenser reheater 6, respectively. The first heat pipe 9 and the second heat pipe 10 are connected by an evaporator pipe 11 and a return pipe 12. The refrigerant in the first heat pipe 9 absorbs heat and evaporates, entering the second heat pipe 10 along the evaporator pipe 11. Heat is released at the second heat pipe 10, reheating the air that has undergone deep cooling and dehumidification by the surface cooler 8. Then, the refrigerant liquefies and is introduced into the first heat pipe 9 along the return pipe 12, realizing the heat transfer circulation between the front and rear sides of the surface cooler 8. The flow direction of the refrigerant is as follows: Figure 4 As indicated by the dashed arrow.

[0032] By setting up two evaporation pipes 11 and one return pipe 12, the first heat pipe 9 and the second heat pipe 10 are connected. The refrigerant in the first heat pipe 9 evaporates and vaporizes, and the volume of the evaporated and vaporized refrigerant increases. It enters the second heat pipe 10 through the two evaporation pipes 11 in parallel, ensuring its smooth flow. After the refrigerant in the second heat pipe 10 releases heat, it forms a liquid and flows back into the first heat pipe 9 along the return pipe 12, which greatly improves the efficiency of refrigerant circulation and enhances the heat transfer capacity.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device for improving heat pump dehumidification circulation, comprising a body (1), with an air inlet (2) and an air outlet (3) at both ends of the body (1), and a blower (4), a surface cooler (8), and a U-shaped dehumidification heat pipe assembly fixedly installed inside the body (1), characterized in that: The U-shaped dehumidifying heat pipe assembly includes an evaporative precooler (5) and a heat pipe condenser-reheater (6). A side guard plate (7) is fixedly installed on the front side of the evaporative precooler (5) and the heat pipe condenser-reheater (6). A surface cooler (8) is located in the area between the evaporative precooler (5) and the heat pipe condenser-reheater (6). The evaporator precooler (5) has a first heat pipe (9) fixedly installed inside, the heat pipe condenser reheater (6) has a second heat pipe (10) fixedly installed inside, and the side guard plate (7) has an evaporator (11) and a return pipe (12) fixedly installed inside. The first heat pipe (9) and the second heat pipe (10) are connected through the evaporator (11) and the return pipe (12).

2. The heat exchange device for improving heat pump dehumidification circulation according to claim 1, characterized in that: The evaporator precooler (5) and the heat pipe condenser reheater (6) have the same structure, both including a frame (13). Several heat-conducting plates (14) are fixedly installed inside the frame (13). The first heat pipe (9) or the second heat pipe (10) runs through the front and rear sides of the frame (13), and the first heat pipe (9) or the second heat pipe (10) is fixedly connected to the heat-conducting plates (14).

3. The heat exchange device for improving heat pump dehumidification circulation according to claim 2, characterized in that: The evaporator precooler (5) has a first drain pipe (15) fixedly installed inside, and a first tee pipe (16) is fixedly installed on the rear side of the frame (13) of the evaporator precooler (5). The rear end of the first drain pipe (15) is connected to the first tee pipe (16).

4. The heat exchange device for improving heat pump dehumidification circulation according to claim 3, characterized in that: There are two first heat pipes (9), and the rear ends of both first heat pipes (9) are connected to the first three-way pipe (16).

5. The heat exchange device for improving heat pump dehumidification circulation according to claim 4, characterized in that: The heat pipe condenser reheater (6) has a second drain pipe (17) fixedly installed inside, and a second tee pipe (18) is fixedly installed on the rear side of the frame (13) of the heat pipe condenser reheater (6). The rear end of the second drain pipe (17) is connected to the second tee pipe (18).

6. The heat exchange device for improving heat pump dehumidification circulation according to claim 5, characterized in that: There are two second heat pipes (10), and the rear ends of both second heat pipes (10) are connected to the second tee pipe (18).

7. The heat exchange device for improving heat pump dehumidification circulation according to claim 6, characterized in that: There are two evaporation tubes (11), and the two ends of the two evaporation tubes (11) are fixedly connected and communicated with the front ends of the two first heat pipes (9) and the two second heat pipes (10), respectively.

8. The heat exchange device for improving heat pump dehumidification circulation according to claim 7, characterized in that: The two ends of the return pipe (12) are fixedly connected and communicate with the front ends of the first drainage pipe (15) and the second drainage pipe (17), respectively.

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