Rotary wheel dehumidification system

Abstract

The utility model discloses a rotating wheel dehumidification system which comprises a fresh air channel, a regenerated air channel, a dehumidification rotating wheel, a first heat exchange mechanism and a second heat exchange mechanism. The first heat exchange mechanism and the second heat exchange mechanism are used for cooling fresh air. The dehumidification rotating wheel comprises a dehumidification area arranged on the fresh air channel and a regeneration area arranged on the regeneration air channel. The second heat exchange mechanism comprises a compressor, a condenser, a liquid storage tank for storing and / or caching a refrigerant, an expansion valve, an evaporator and a gas-liquid separator which are sequentially communicated end to end to form a circulation loop; the evaporator and the first heat exchange mechanism are both located on the fresh air channel, and the evaporator is located between the first heat exchange mechanism and the dehumidification area. The condenser is located in the area outside the fresh air channel and the regeneration air channel. The rotary wheel dehumidification system at least can ensure that the humidity of dry air sent to a room meets the expected requirement when the environment temperature and humidity fluctuate.

Description

Technical Field

[0001] The utility model relates to the field of new energy, in particular to the field of energy-saving dehumidification, and specifically relates to a rotary dehumidification system. Background Art

[0002] Most of the existing rotary dehumidifiers on the market first cool the processing air through a front surface cooler (by exchanging heat with chilled water) and then perform chilled dehumidification, and then pass through a rotary wheel for dehumidification. Finally, the dry air processed by the rotary wheel is sent to the room. Sometimes, when the environmental temperature and humidity increase, the dehumidification capacity of the rotary wheel will decrease, and the temperature of the chilled water fluctuates, resulting in the humidity of the dry air sent to the room not meeting the requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome one or more deficiencies in the prior art and provide an improved rotary dehumidification system, which can at least ensure that the humidity of the dry air sent to the room meets the expected requirements when the environmental temperature and humidity fluctuate.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A rotary dehumidification system, which includes a fresh air channel, a regeneration air channel, a dehumidification rotary wheel, and a first heat exchange mechanism and a second heat exchange mechanism respectively used for cooling the fresh air;

[0006] The dehumidification rotary wheel includes a dehumidification area arranged on the fresh air channel and a regeneration area arranged on the regeneration air channel;

[0007] The second heat exchange mechanism includes a compressor, a condenser, a liquid storage tank for storing and / or buffering refrigerant, an expansion valve, an evaporator, and a gas-liquid separator. The compressor, the condenser, the liquid storage tank, the expansion valve, the evaporator, and the gas-liquid separator are connected end to end in sequence to form a circulation loop;

[0008] The evaporator and the first heat exchange mechanism are both located on the fresh air channel, and the evaporator is located between the first heat exchange mechanism and the dehumidification area;

[0009] The condenser is located in an area outside both the fresh air channel and the regeneration air channel.

[0010] According to some preferred aspects of the utility model, the liquid storage tank, the compressor, the gas-liquid separator, and the condenser are all located in the same area, and the expansion valve is located beside the evaporator.

[0011] According to some preferred aspects of the utility model, the condenser is located in the air environment.

[0012] According to some preferred aspects of the present utility model, a liquid replenishing port for replenishing refrigerant is provided on the liquid storage tank.

[0013] According to some preferred aspects of the present utility model, the rotary wheel dehumidification system further includes a supply air fan, and the first heat exchange mechanism, the evaporator, the dehumidification zone, and the supply air fan are sequentially arranged on the fresh air passage along the fresh air flow direction.

[0014] According to some preferred aspects of the present utility model, the rotary wheel dehumidification system further includes a regeneration fan arranged on the regeneration air passage.

[0015] According to some preferred aspects of the present utility model, the rotary wheel dehumidification system further includes a heater, and the heater, the regeneration zone, and the regeneration fan are sequentially arranged on the regeneration air passage along the regeneration air flow direction.

[0016] According to some preferred aspects of the present utility model, the compressor, the condenser, the liquid storage tank, the expansion valve, the evaporator, and the gas-liquid separator are sequentially connected end to end through copper pipes, and the total length of the copper pipes connecting the condenser and the evaporator is less than 20 meters.

[0017] According to some preferred aspects of the present utility model, the rotary wheel dehumidification system further includes a first temperature sensor and a second temperature sensor respectively used for detecting the fresh air temperature. The first temperature sensor is arranged at the air outlet end of the first heat exchange mechanism, and the second temperature sensor is arranged at the air outlet end of the evaporator.

[0018] In some embodiments of the present utility model, the first heat exchange mechanism is a surface cooler.

[0019] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:

[0020] Based on the problems of the existing rotary dehumidifier that when the ambient temperature and humidity change significantly, especially increase, the dehumidification capacity of the rotary wheel decreases, resulting in the dehumidification effect not meeting the requirements, etc., the present utility model innovatively provides an improved rotary dehumidification system, which is a rotary dehumidification system that uses two heat exchange mechanisms to cool the fresh air respectively. Among them, the first heat exchange mechanism is mainly for pre-cooling, and the second heat exchange mechanism further ensures the control of the temperature and humidity of the fresh air by placing the evaporator between the first heat exchange mechanism and the dehumidification area. In particular, in the present utility model, the condenser is arranged in an area outside both the fresh air channel and the regeneration air channel, so that the condenser can preferably exchange heat only with the ambient air, and the fresh air also comes from the ambient air. In this way, the temperature of the refrigerant in the condenser after heat exchange with the air can be relatively stable, that is, the temperature fluctuation of the refrigerant entering the evaporator is small, so that the evaporator can play an excellent cooling role; in the presence of the second heat exchange mechanism, even if the cooling effect of the first heat exchange mechanism fluctuates, it can be corrected by the second heat exchange mechanism, which is beneficial to ensuring that the humidity of the dry air sent to the room meets the requirements. In addition, a liquid storage tank is provided in the second heat exchange mechanism of the present utility model. Since there are many components in the second heat exchange mechanism, the performance usually needs to be debugged in advance and then installed in the rotary dehumidification system. When installing, due to the need to connect pipelines, and the refrigerant in the system usually has a high pressure, partial leakage may occur during pipeline connection, or local leakage may occur during use, both of which will cause insufficient refrigerant in the system. The liquid storage tank can store and / or buffer the refrigerant and can also act as a role of replenishing the refrigerant into the system, thereby facilitating the normal operation of the second heat exchange mechanism and further ensuring that the humidity of the dry air sent to the room meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the rotary dehumidification system in the embodiment of the present utility model;

[0023] In the reference numerals: 1, fresh air channel; 2, regeneration air channel; 3, dehumidification rotary wheel; 31, dehumidification area; 32, regeneration area; 4, first heat exchange mechanism; 5, second heat exchange mechanism; 51, compressor; 52, condenser; 53, liquid storage tank; 54, expansion valve; 55, evaporator; 56, gas-liquid separator; 6, air supply fan; 7, regeneration fan; 8, heater. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined; the descriptions of "first", "second", "third", etc. are only for distinguishing from each other for easy identification, without regard to the order relationship and without importance.

[0026] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0027] As Figure 1 shown, this example provides a rotary dehumidification system, which includes a fresh air passage 1, a regeneration air passage 2, a dehumidification wheel 3, and a first heat exchange mechanism 4 and a second heat exchange mechanism 5 respectively used for cooling the fresh air.

[0028] Furthermore, in this example, the dehumidification wheel 3 includes a dehumidification area 31 provided on the fresh air passage 1 and a regeneration area 32 provided on the regeneration air passage 2. During the rotation of the dehumidification wheel 3, the dehumidification area 31 and the regeneration area 32 can be switched with each other. The dehumidification area 31 after absorbing moisture can rotate into the regeneration air passage 2 for regeneration, and the regeneration area 32 can rotate into the fresh air passage 1 for dehumidification;

[0029] The second heat exchange mechanism 5 includes a compressor 51, a condenser 52, a liquid storage tank 53 for storing and / or buffering the refrigerant, an expansion valve 54, an evaporator 55, and a gas-liquid separator 56. The compressor 51, the condenser 52, the liquid storage tank 53, the expansion valve 54, the evaporator 55, and the gas-liquid separator 56 are connected end to end in sequence to form a circulation loop. The refrigerant circulates in the circulation loop and undergoes gas-liquid phase changes at different locations to absorb or release heat;

[0030] The evaporator 55 and the first heat exchange mechanism 4 are both located on the fresh air passage 1, and the evaporator 55 is located between the first heat exchange mechanism 4 and the dehumidification area 31; the condenser 52 is located in an area outside both the fresh air passage 1 and the regeneration air passage 2.

[0031] In this example, the liquid storage tank 53, the compressor 51, the gas-liquid separator 56, and the condenser 52 are all located in the same area. The expansion valve 54 is arranged beside the evaporator 55. Further, the condenser 52 is located in the air environment. In the above arrangement, on the one hand, it can ensure that the condenser 52 basically exchanges heat only with the ambient air, which is equivalent to the second heat exchange mechanism 5 of the present utility model focusing on heat absorption and refrigeration, reducing the interference of other factors, thereby ensuring the working efficiency of the evaporator 55. On the other hand, arranging them in the same area can reduce the installation difficulty and shorten the length of the pipeline connecting them. Further, the compressor 51, the condenser 52, the liquid storage tank 53, the expansion valve 54, the evaporator 55, and the gas-liquid separator 56 are sequentially connected end to end through copper pipes, and the total length of the copper pipes connecting the condenser 52 and the evaporator 55 is less than 20 meters. In this way, the refrigeration effect can be further ensured, and unexpected changes in the refrigerant caused by too long pipelines can be avoided.

[0032] Further, in this example, a liquid filling port (not shown) for adding refrigerant is provided on the liquid storage tank 53, and refrigerant can be supplemented into the circulation loop when needed to ensure the refrigeration effect.

[0033] In this example, the rotary dehumidification system further includes a supply air fan 6, a regeneration air fan 7, and a heater 8. The first heat exchange mechanism 4, the evaporator 55, the dehumidification area 31, and the supply air fan 6 are sequentially arranged on the fresh air passage 1 along the fresh air flow direction. The heater 8, the regeneration area 32, and the regeneration air fan 7 are sequentially arranged on the regeneration air passage 2 along the regeneration air flow direction. The heater 8 can be an electric heater, a steam heater, etc., which is used to heat the regeneration air, and the heated regeneration air is used to regenerate a specific area of the rotary wheel.

[0034] In this example, the rotary dehumidification system further includes a first temperature sensor and a second temperature sensor respectively used for detecting the fresh air temperature. The first temperature sensor is arranged at the air outlet end of the first heat exchange mechanism 4, and the second temperature sensor is arranged at the air outlet end of the evaporator 55. Further, the rotary dehumidification system can also include a control system, and the control system is respectively communicatively connected to the first temperature sensor, the second temperature sensor, the supply air fan, the regeneration air fan, and the compressor. Furthermore, the air volume can be adjusted according to the temperature, and the working efficiency of other components can also be adjusted according to the required air volume.

[0035] In this example, the first heat exchange mechanism 4 can be a surface cooler, which can allow the working medium to flow through the inner cavity of the metal pipe, and the air to be treated flows through the outer wall of the metal pipe for heat exchange to achieve the purpose of cooling the air. The working medium can be chilled water, etc.

[0036] During operation, the air supply fan 6, the regeneration fan 7 and the dehumidifying rotor 3 are started. The fresh air undergoes chilled dehumidification through the first heat exchange mechanism 4. The first heat exchange mechanism 4 can adopt a surface cooler with chilled water as the working medium. If the chilled water inlet temperature is 7°C and the return water temperature is 12°C, the temperature T1 after the surface cooler is basically 13°C, and the general moisture content is about 8.96 g / kg. If the chilled water inlet temperature of the surface cooler is 10°C and the return water temperature is 15°C, the temperature T1 after the surface cooler is basically 16°C, and the general moisture content is about 10.9 g / kg. The second heat exchange mechanism 5 is started. After the fresh air is preliminarily cooled by the surface cooler, it further undergoes chilled dehumidification through the evaporator 55. The temperature T2 after the evaporator 55 is 5°C, and the general moisture content is about 5.18 g / kg. From the moisture content data, it can be seen that the moisture content of the process air entering the dehumidifying rotor 3 decreases. If the surface cooler uses 7°C chilled water to treat the fresh air, the moisture content of the fresh air decreases by about 3.78 g / kg. If the surface cooler uses 10°C chilled water to treat the fresh air, the moisture content of the fresh air decreases by about 5.7 g / kg. This greatly reduces the dehumidification pressure of the dehumidifying rotor 3 and ensures that the dry air passing through the rotor fully meets the humidity requirements of the room.

[0037] In summary, based on the problems that the dehumidification capacity of the existing rotary dehumidifier decreases and the dehumidification effect fails to meet the requirements when the environmental temperature and humidity change significantly, especially increase, the present utility model innovatively provides an improved rotary dehumidification system, which is a rotary dehumidification system that uses two heat exchange mechanisms to cool the fresh air respectively. Among them, the first heat exchange mechanism is mainly for pre-cooling, and the second heat exchange mechanism further ensures the control of the temperature and humidity of the fresh air by placing the evaporator between the first heat exchange mechanism and the dehumidification area. In particular, in the present utility model, the condenser is arranged in an area outside both the fresh air channel and the regeneration air channel, so that the condenser can preferably exchange heat only with the ambient air, and the fresh air also comes from the ambient air. In this way, the temperature of the refrigerant in the condenser after exchanging heat with the air can be relatively stable, that is, the temperature fluctuation of the refrigerant entering the evaporator is small, so that the evaporator can play an excellent cooling role; in the presence of the second heat exchange mechanism, even if the cooling effect of the first heat exchange mechanism fluctuates, it can be corrected by the second heat exchange mechanism, which is beneficial to ensuring that the humidity of the dry air sent to the room meets the requirements. In addition, a liquid storage tank is arranged in the second heat exchange mechanism of the present utility model. Since there are many components in the second heat exchange mechanism, it usually needs to be pre-tested for performance and then installed in the rotary dehumidification system. When installing, due to the need to connect pipelines, and the refrigerant in the system usually has a high pressure, partial leakage may occur during pipeline connection, or local leakage may occur during use, both of which will cause insufficient refrigerant in the system. The liquid storage tank can store and / or buffer the refrigerant and can also act as a role of replenishing the refrigerant to the system, thereby facilitating the normal operation of the second heat exchange mechanism and further ensuring that the humidity of the dry air sent to the room meets the requirements.

[0038] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose thereof is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. It is not intended to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A rotary dehumidification system, characterized in that: The rotary dehumidification system comprises a fresh air channel, a regeneration air channel, a dehumidification rotary wheel, and a first heat exchange mechanism and a second heat exchange mechanism for cooling the fresh air respectively; The dehumidification wheel comprises a dehumidification zone arranged on the fresh air passage and a regeneration zone arranged on the regeneration air passage; The second heat exchange mechanism comprises a compressor, a condenser, a liquid storage tank for storing and / or buffering refrigerant, an expansion valve, an evaporator and a gas-liquid separator, wherein the compressor, the condenser, the liquid storage tank, the expansion valve, the evaporator and the gas-liquid separator are connected end to end in sequence to form a circulation loop; The evaporator and the first heat exchange mechanism are both located on the fresh air passage, and the evaporator is located between the first heat exchange mechanism and the dehumidification area; The condenser is located in an area outside the fresh air channel and the regeneration air channel.

2. The rotary dehumidification system according to claim 1, characterized in that: The liquid storage tank, the compressor, the gas-liquid separator and the condenser are all located in the same area, and the expansion valve is located beside the evaporator.

3. The rotary dehumidification system according to claim 1, characterized in that: The condenser is located in an air environment.

4. The rotary dehumidification system according to claim 1, characterized in that: The liquid storage tank is provided with a liquid replenishing port for replenishing refrigerant.

5. The rotary dehumidification system according to claim 1, characterized in that: The rotary dehumidification system also includes an air supply fan, and the first heat exchange mechanism, the evaporator, the dehumidification zone and the air supply fan are sequentially arranged on the fresh air channel along the fresh air flow direction.

6. The rotary dehumidification system according to claim 1, characterized in that: The rotary dehumidification system also includes a regeneration fan arranged on the regeneration air channel.

7. The rotary dehumidification system according to claim 6, characterized in that: The rotary dehumidification system further includes a heater, and the heater, the regeneration zone and the regeneration fan are sequentially arranged on the regeneration air channel along the regeneration air flow direction.

8. The rotary dehumidification system according to claim 1, characterized in that: The compressor, the condenser, the liquid storage tank, the expansion valve, the evaporator and the gas-liquid separator are connected end to end in sequence through copper pipes, and the total length of the copper pipes connecting the condenser and the evaporator is less than 20 meters.

9. The rotary dehumidification system according to claim 1, characterized in that: The rotary dehumidification system also includes a first temperature sensor and a second temperature sensor for detecting the temperature of fresh air respectively. The first temperature sensor is arranged at the air outlet end of the first heat exchange mechanism, and the second temperature sensor is arranged at the air outlet end of the evaporator.

10. The rotary dehumidification system according to claim 1, characterized in that: The first heat exchange mechanism is a surface cooler.

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