High-temperature heat pump adsorption dehumidifier unit

Abstract

This invention relates to a high-temperature heat pump adsorption dehumidification unit. It employs a heat pump evaporator to perform a first cooling and dehumidification process on the air received from the return air end, forming a first cold air. Then, an adsorption regeneration component performs a second cooling and dehumidification process on the first cold air, forming a second cold air. Next, a condenser heats the second cold air to form dry hot air. The unit includes a heat pump compressor for compressing refrigerant and supplying it to the adsorption regeneration component, condenser, and heat pump evaporator before returning to the cycle. The refrigerant undergoes regeneration and evaporation processes in the adsorption regeneration component. This invention achieves combined condensation and adsorption dehumidification, effectively removing moisture from the air and facilitating the production of high-temperature dry hot air. The adsorption regeneration component utilizes refrigerant supplied by the heat pump compressor for regeneration or evaporation. Its overall structure is rational and organically integrated, allowing for assembly and construction on a single chassis. Its small size facilitates assembly and implementation, effectively reducing operating costs.

Description

Technical Field

[0001] This invention relates to the field of dehumidification equipment technology, and in particular to dehumidification units used in drying production. Background Technology

[0002] Currently, the main methods for air dehumidification in drying production are condensation dehumidification and regenerative rotary dehumidification. Condensation dehumidification cools water vapor in the air, causing it to condense into liquid water, which is then discharged or recycled, thus achieving humidity control. However, in actual production, when this dehumidification method is used for hot air drying, it is difficult to achieve the required dryness and temperature of the hot air, which restricts the drying process. Regenerative rotary dehumidification utilizes the moisture absorption and regeneration process of the regenerative rotary wheel to efficiently control humidity under low-temperature conditions, resulting in stronger dehumidification capabilities. However, in existing low-temperature dehumidification technologies using regenerative rotary dehumidification, the air inlet unit, dehumidification unit, and air supply unit are often located in different enclosures, resulting in a dispersed structure, a large footprint, and high investment costs. Summary of the Invention

[0003] The purpose of this invention is to provide a high-temperature heat pump adsorption dehumidifier unit that achieves combined condensation and adsorption dehumidification, improves dehumidification capacity, and optimizes the structure for easy implementation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] High-temperature heat pump adsorption dehumidification unit, which has the following features:

[0006] The return air end receives the air exhausted from the work area;

[0007] A heat pump evaporator is used to perform the initial cooling and dehumidification treatment on the air received at the return air end to form the first cold air;

[0008] An adsorption regeneration assembly has a first adsorber and a second adsorber arranged in parallel, with the first adsorber and the second adsorber alternately passing air through them to perform a second cooling and dehumidification treatment on the first cold air to form a second cold air.

[0009] A condenser is used to heat the second cold air to form dry hot air;

[0010] At the air outlet, dry, hot air is guided and delivered to the work area;

[0011] The heat pump compressor is used to compress the refrigerant and deliver it to the adsorption regeneration component, condenser and heat pump evaporator before returning to the cycle. When the refrigerant passes through the first adsorber and the second adsorber, it undergoes regeneration and evaporation respectively, with the evaporation and airflow being synchronized.

[0012] The above scheme is further described as follows: the adsorption regeneration component is embedded between the heat pump compressor and the condenser; a first electromagnetic four-way valve is embedded between the heat pump compressor and the adsorption regeneration component; and a second electromagnetic four-way valve is embedded between the adsorption regeneration component and the condenser. The refrigerant movement is guided by the cooperation of the first and second electromagnetic four-way valves, allowing the first and second adsorbers to alternate between regeneration and evaporation operations. The refrigerant used for regeneration exits the heat pump compressor, passes through the first electromagnetic four-way valve, the adsorption regeneration component, and the second electromagnetic four-way valve, and then enters the condenser. The condenser's delivery end is connected to and parallel to a first refrigerant branch and a second refrigerant branch. The first refrigerant branch guides the refrigerant through the second electromagnetic four-way valve, the adsorption regeneration component, and the first electromagnetic four-way valve back to the heat pump compressor. At this point, the adsorption regeneration component uses the refrigerant provided by the first refrigerant branch for evaporation. The second refrigerant branch then guides the refrigerant to the heat pump evaporator, and the refrigerant output from the heat pump evaporator returns to the heat pump compressor.

[0013] The above scheme is further described as follows: the first adsorber includes a first adsorption body and a first regeneration coil, and the first adsorption body and the first regeneration coil are connected to form a first heat conduction system; the second adsorber includes a second adsorption body and a second regeneration coil, and the second adsorption body and the second regeneration coil are connected to form a second heat conduction system; the refrigerant is introduced into the first regeneration coil and the second regeneration coil for regeneration or evaporation through the switching of the first electromagnetic four-way valve and the second electromagnetic four-way valve.

[0014] The above scheme is further described in that the first adsorption body and the second adsorption body are both composed of a heat sink and an adsorption material attached to the surface of the heat sink. The heat sink corresponds to the heat exchange structure formed by connecting the first regeneration coil or the second regeneration coil. The regeneration process is to heat up to remove the moisture adsorbed on the adsorption material, so that the adsorption material can restore its adsorption capacity. The evaporation process is to cool the first cold air a second time and dehumidify it by the adsorption material to form the second cold air.

[0015] The above scheme is further described as follows: a first electronic expansion valve is embedded in the first refrigerant branch, and the first electronic expansion valve is located between the condenser and the second electromagnetic four-way valve; a second electronic expansion valve is embedded in the second refrigerant branch, and the second electronic expansion valve is located between the condenser and the heat pump evaporator.

[0016] Furthermore, the above-mentioned solution includes a baking room as the work area.

[0017] A further improvement in the above scheme is that a blower is provided on the air outlet.

[0018] A further improvement in the above scheme is that the adsorbent material is silica gel, and the adsorbent material is attached to the surface of the heat sink by injection molding.

[0019] This invention utilizes a heat pump evaporator to first cool and dehumidify the air received from the return air end, forming a first cold air. An adsorption regeneration component then performs a second cooling and dehumidification process on this first cold air, forming a second cold air. This combined condensation and adsorption dehumidification effectively removes moisture from the air, and the dryness of the second cold air can be controlled to a high degree. Finally, the second cold air is heated by a condenser to form dry hot air, significantly improving both its dryness and temperature, resulting in high-temperature dry hot air suitable for drying and other production needs. Simultaneously, the adsorption regeneration component employs a parallel arrangement of a first and second adsorbent, with airflow alternately passing through them. The refrigerant provided by the heat pump compressor is used to regenerate or evaporate either the first or second adsorbent. Evaporation is synchronized with airflow, achieving cooling, adsorption, and dehumidification, while regeneration restores the adsorption capacity of the first or second adsorbent. This invention features a rational overall structure that can be organically integrated, allowing for assembly and construction on a single chassis. Its compact size facilitates modular implementation and effectively reduces operating costs. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0021] Appendix Figure 2 This is a schematic diagram of the operation of one of the refrigerants of the present invention;

[0022] Appendix Figure 3 This is a schematic diagram of the operation of the second refrigerant of the present invention. Detailed Implementation

[0023] The following will further explain the concept, specific structure, and technical effects of the invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the invention.

[0024] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] See Figure 1 , 2Figure 3 shows a schematic diagram of a preferred embodiment of the present invention. The present invention relates to a high-temperature heat pump adsorption dehumidification unit, constructed on a single chassis 200. The chassis 200 includes a return air end 1, a heat pump evaporator 2, an adsorption regeneration component 3, a condenser 4, an air outlet end 5, and a heat pump compressor 6. The structure is compact and reasonable, facilitating assembly and implementation. The return air end 1 is connected to the working area 100 via a pipe and is used to receive the air (return air) discharged from the working area 100. Of course, the possibility of mixed recycled air and fresh air is not excluded, and this is not a limitation. In this embodiment, the working area 100 is preferably a drying room, equipped with drying equipment for drying crops, etc. The heat pump evaporator 2 is used to perform the first cooling and dehumidification treatment on the air received from the return air end 1 to form first cold air. The dehumidification method utilizes condensation to cool the water vapor in the air, causing it to condense into liquid water, which is then discharged or recycled, thereby achieving humidity control. The adsorption-regeneration assembly 3 has a first adsorber 31 and a second adsorber 32 arranged in parallel, with the first adsorber 31 and the second adsorber 32 alternating through which air passes. When the first cold air passes through the first adsorber 31 or the second adsorber 32, the first adsorber 31 or the second adsorber 32 performs a second cooling and dehumidification treatment on the first cold air to form a second cold air. The alternating airflow can be achieved by switching the airflow path through a damper control. That is, different airflow paths are arranged in parallel to match the first adsorber 31 and the second adsorber 32 respectively, and then the different airflow paths are switched by the damper to achieve the alternating airflow of the first adsorber 31 and the second adsorber 32. The second cooling and dehumidification treatment is based on adsorption dehumidification, which can efficiently control humidity under low temperature conditions and remove more moisture from the air. The condenser 4 is used to heat the second cold air to form dry hot air, and the air outlet 5 guides and delivers the dry hot air to the working area 100. In this embodiment, the air outlet 5 is equipped with a blower 51 to achieve positive pressure air delivery, which is beneficial to the drying work. This invention achieves combined condensation and adsorption dehumidification, which can better remove moisture from the air. Finally, the second cold air is heated by the condenser 4 to form dry hot air, greatly improving the dryness and temperature of the hot air, which is beneficial for production needs such as drying. The heat pump compressor 6 is used to compress the refrigerant and deliver it to the adsorption regeneration component 3, condenser 4 and heat pump evaporator 2 before returning to the loop, forming a closed-loop operation. When the refrigerant passes through the first adsorber 31 and the second adsorber 32, it undergoes regeneration and evaporation respectively. The evaporation is synchronized with the airflow, thus achieving efficient adsorption and removal of moisture from the air under low-temperature conditions.

[0026] Figure 2 , 3As shown, in this embodiment, the adsorption-regeneration component 3 is embedded between the heat pump compressor 6 and the condenser 4. A first electromagnetic four-way valve 71 is embedded between the heat pump compressor 6 and the adsorption-regeneration component 3, and a second electromagnetic four-way valve 72 is embedded between the adsorption-regeneration component 3 and the condenser 4. The refrigerant movement is guided by the cooperation of the first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72, allowing the first adsorber 31 and the second adsorber 32 to alternate between regeneration and evaporation operations. The refrigerant used for regeneration exits the heat pump compressor 6, passes through the first electromagnetic four-way valve 71, the adsorption-regeneration component 3, and the second electromagnetic four-way valve 72, and then enters the condenser 4. Figure 2 The refrigerant from the heat pump compressor 6 shown passes through the first electromagnetic four-way valve 71, the first adsorber 31 and the second electromagnetic four-way valve 72 before entering the condenser 4. Figure 3 The refrigerant from the heat pump compressor 6 shown passes through the first solenoid four-way valve 71, the second adsorber 32, and the second solenoid four-way valve 72 before entering the condenser 4. The condenser 4's delivery end is connected to and parallel to the first refrigerant branch 81 and the second refrigerant branch 82. The first refrigerant branch 81 guides the refrigerant through the second solenoid four-way valve 72, the adsorption regeneration assembly 3, and the first solenoid four-way valve 71 before returning to the heat pump compressor 6. At this point, the adsorption regeneration assembly 3 uses the refrigerant provided by the first refrigerant branch 81 for evaporation. The second refrigerant branch 82 guides the refrigerant to the heat pump evaporator 2, and the refrigerant output from the heat pump evaporator 2 returns to the heat pump compressor 6. Figure 2 The refrigerant delivered from the condenser 4 shown returns to the heat pump compressor 6 after passing through the second electromagnetic four-way valve 72, the second adsorber 32 and the first electromagnetic four-way valve 71. Figure 3 The refrigerant delivered from the condenser 4 shown returns to the heat pump compressor 6 after passing through the second electromagnetic four-way valve 72, the first adsorber 31, and the first electromagnetic four-way valve 72.

[0027] In this embodiment, the first adsorber 31 includes a first adsorption body 311 and a first regeneration coil 312, and the first adsorption body 311 and the first regeneration coil 312 are connected to form a first heat conduction system; the second adsorber 32 includes a second adsorption body 321 and a second regeneration coil 322, and the second adsorption body 321 and the second regeneration coil 322 are connected to form a second heat conduction system; the refrigerant is introduced into the first regeneration coil 312 and the second regeneration coil 322 for regeneration or evaporation through the switching of the first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72. Further, both the first adsorption body 311 and the second adsorption body 321 are composed of a heat sink and an adsorption material attached to the surface of the heat sink, and the heat sink corresponds to the heat exchange structure formed by connecting the first regeneration coil 312 or the second regeneration coil 322; the regeneration process involves heating to remove the moisture adsorbed on the adsorption material, so that the adsorption material restores its adsorption capacity; the evaporation process involves cooling the first cold air a second time and dehumidifying it with the adsorption material to form a second cold air. Preferably, the adsorbent material is silica gel, which is attached to the surface of the heat sink by injection molding. This method results in a simple, compact, practical, and long-lasting structure. The first adsorber 31 and the second adsorber 32 are constructed as a heat exchange structure, facilitating airflow adsorption and enabling efficient regeneration using high-temperature, high-pressure refrigerant. The coordinated movement of the refrigerant by the first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72 allows for convenient and quick alternating operation of the first adsorber 31 and the second adsorber 32. This design is simple and easy to implement.

[0028] In this embodiment, a first electronic expansion valve 811 is embedded in the first refrigerant branch 81, located between the condenser 4 and the second solenoid four-way valve 72; a second electronic expansion valve 821 is embedded in the second refrigerant branch 82, located between the condenser 4 and the heat pump evaporator 2. Adjustment of the first electronic expansion valve 811 and the second electronic expansion valve 821 ensures evaporation efficiency, thereby improving air dehumidification efficiency.

[0029] This invention utilizes a heat pump evaporator to first cool and dehumidify the air received from the return air end, forming a first cold air. An adsorption regeneration component then performs a second cooling and dehumidification process on this first cold air, forming a second cold air. This combined condensation and adsorption dehumidification effectively removes moisture from the air. Finally, the second cold air is heated by a condenser to form dry hot air, significantly improving its dryness and temperature, meeting the needs of producing high-temperature dry hot air for drying and other production processes. Simultaneously, the adsorption regeneration component employs a parallel arrangement of a first and second adsorbent, with airflow alternating between them. The refrigerant provided by the heat pump compressor is used to regenerate or evaporate either the first or second adsorbent. Evaporation occurs simultaneously with airflow, achieving cooling, adsorption, and dehumidification, while regeneration restores the adsorption capacity of the first or second adsorbent. This invention features a rational overall structure that can be organically integrated, allowing for assembly and construction on a single chassis. Its compact size facilitates modular implementation and effectively reduces operating costs.

[0030] While preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention should not be limited to structures and operations that are exactly the same as those described above and shown in the drawings. Those skilled in the art can make many equivalent improvements and variations to the above embodiments through logical analysis, reasoning, or limited experiments without departing from the concept and scope of the present invention, but all such improvements and variations should fall within the scope of protection claimed by the present invention.

Claims

1. A high-temperature heat pump adsorption dehumidification unit, characterized in that, have: Return air end (1) receives air discharged from the work area (100); The heat pump evaporator (2) is used to perform the first cooling and dehumidification treatment on the air received from the return air end (1) to form the first cold air; The adsorption regeneration component (3) has a first adsorbent (31) and a second adsorbent (32) arranged in parallel, and the first adsorbent (31) and the second adsorbent (32) alternately pass air to perform a second cooling and dehumidification treatment on the first cold air to form a second cold air. Condenser (4) is used to heat the second cold air to form dry hot air; The air outlet (5) guides and delivers dry hot air to the work area (100). The heat pump compressor (6) is used to compress the refrigerant and deliver it to the adsorption regeneration component (3), condenser (4) and heat pump evaporator (2) and then return to the cycle. When the refrigerant passes through the first adsorber (31) and the second adsorber (32), it is regenerated and evaporated respectively. The evaporation is synchronized with the air flow. The adsorption regeneration component (3) is embedded between the heat pump compressor (6) and the condenser (4), and a first electromagnetic four-way valve (71) is embedded between the heat pump compressor (6) and the adsorption regeneration component (3), and a second electromagnetic four-way valve (72) is embedded between the adsorption regeneration component (3) and the condenser (4). The movement of the refrigerant is guided by the cooperation of the first electromagnetic four-way valve (71) and the second electromagnetic four-way valve (72), so that the first adsorber (31) and the second adsorber (32) alternate between regeneration and evaporation. The refrigerant used for regeneration passes through the first electromagnetic four-way valve (71) and the adsorption regeneration component (3) after it comes out of the heat pump compressor (6). The components (3) and the second electromagnetic four-way valve (72) then enter the condenser (4); the delivery end of the condenser (4) is connected to and parallel to the first refrigerant branch (81) and the second refrigerant branch (82). The first refrigerant branch (81) guides the refrigerant through the second electromagnetic four-way valve (72), the adsorption regeneration component (3) and the first electromagnetic four-way valve (71) and back to the heat pump compressor (6). At this time, the adsorption regeneration component (3) uses the refrigerant provided by the first refrigerant branch (81) to perform evaporation. The second refrigerant branch (82) guides the refrigerant to the heat pump evaporator (2), and the refrigerant output by the heat pump evaporator (2) returns to the heat pump compressor (6). The first adsorber (31) includes a first adsorption body (311) and a first regeneration coil (312), and the first adsorption body (311) and the first regeneration coil (312) are connected to form a first heat conduction system; the second adsorber (32) includes a second adsorption body (321) and a second regeneration coil (322), and the second adsorption body (321) and the second regeneration coil (322) are connected to form a second heat conduction system; the refrigerant is introduced into the first regeneration coil (312) and the second regeneration coil (322) for regeneration or evaporation by switching the first electromagnetic four-way valve (71) and the second electromagnetic four-way valve (72).

2. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that, The first adsorption body (311) and the second adsorption body (321) are both composed of a heat sink and an adsorption material attached to the surface of the heat sink. The heat sink corresponds to the heat exchange structure formed by connecting the first regeneration coil (312) or the second regeneration coil (322). The regeneration work is to heat up to remove the moisture adsorbed on the adsorption material, so that the adsorption material can restore its adsorption capacity. The evaporation work is to cool the first cold air a second time and dehumidify it by the adsorption material to form the second cold air.

3. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that, The first electronic expansion valve (811) is embedded in the first refrigerant branch (81), and the first electronic expansion valve (811) is located between the condenser (4) and the second electromagnetic four-way valve (72); the second electronic expansion valve (821) is embedded in the second refrigerant branch (82), and the second electronic expansion valve (821) is located between the condenser (4) and the heat pump evaporator (2).

4. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that, The work area (100) is a baking room.

5. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that, A blower (51) is provided on the air outlet (5).

6. The high-temperature heat pump adsorption dehumidification unit according to claim 2, characterized in that, The adsorbent material is silica gel, which is attached to the surface of the heat sink by injection molding.

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