High-temperature heat pump adsorption dehumidification unit

Abstract

The invention relates to a high-temperature heat pump adsorption dehumidification unit. A heat pump evaporator is adopted for conducting first-time cooling and dehumidification treatment on air received by an air return end to form first cold air; then, the adsorption regeneration assembly conducts secondary cooling and dehumidification treatment on the first cold air to form second cold air; then the second cold air is heated through a condenser to form dry hot air; and the heat pump compressor is used for compressing a refrigerant and conveying the refrigerant to the adsorption regeneration assembly, the condenser and the heat pump evaporator to return and circulate, and the refrigerant correspondingly performs regeneration work and evaporation work through the adsorption regeneration assembly. Condensation and adsorption combined dehumidification is achieved, moisture in air can be better removed, and production of high-temperature dry hot air is facilitated. The adsorption regeneration assembly carries out regeneration work or evaporation work through refrigerants provided by a heat pump compressor, the overall structure is reasonable and can be organically combined, the requirement for assembly and construction on the same machine case is met, the size is small, combined implementation is convenient, and the use cost is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dehumidification equipment, in particular to a dehumidification unit used for drying production. Background Art

[0002] At present, in drying production, the main air dehumidification methods are condensation dehumidification and regeneration wheel dehumidification. Condensation dehumidification achieves humidity control by cooling the water vapor in the air to condense it into liquid water, and then removes or recycles it. However, in actual production, when this dehumidification method is used for drying hot air production, the dryness and temperature of the hot air are difficult to increase, which also restricts the drying process. Regeneration wheel dehumidification uses the moisture absorption and regeneration process of the regeneration wheel to efficiently control humidity under low temperature conditions, and has a stronger dehumidification capacity. However, in the existing process of low-temperature dehumidification using regeneration wheel dehumidification technology, the air intake unit, dehumidification unit, and air supply unit are often located in different chassis, and their structures are dispersed, which reduces the footprint and has high investment costs. Summary of the invention

[0003] The object of the present invention is to provide a high-temperature heat pump adsorption dehumidification unit to achieve condensation and adsorption combined dehumidification, improve dehumidification capacity, and optimize the structure to facilitate combined implementation.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: High temperature heat pump adsorption dehumidification unit, which has: The return air end receives the exhaust air from the working area; The heat pump evaporator is used to perform a first cooling and dehumidification process on the air received from the return air end to form the first cold air; An adsorption regeneration component, the adsorption regeneration component has a first adsorber and a second adsorber arranged in parallel, and the first adsorber and the second adsorber are alternately passed through the air, and are used for performing a second cooling and dehumidification process on the first cold air to form a second cold air; A condenser, used for heating the second cold air to form dry hot air; The air outlet guides the dry hot air to the work area; The heat pump compressor is used to compress the refrigerant and transport it to the adsorption regeneration component, condenser and heat pump evaporator before returning to the circulation. When the refrigerant passes through the first adsorber and the second adsorber, regeneration work and evaporation work are performed respectively, wherein the evaporation work is synchronized with the over-air flow.

[0005] The above scheme is further that the adsorption regeneration component is embedded between the heat pump compressor and the condenser, and 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 first electromagnetic four-way valve and the second electromagnetic four-way valve cooperate to guide the movement of the refrigerant, so that the first adsorber and the second adsorber alternately switch between regeneration work and evaporation work; wherein the refrigerant used for regeneration work comes out of the heat pump compressor and 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 delivery end of the condenser is connected to a first refrigerant branch and a second refrigerant branch arranged in parallel, 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 and then returns to the heat pump compressor, at which time the adsorption regeneration component uses the refrigerant provided by the first refrigerant branch to perform evaporation work; after the second refrigerant branch guides the refrigerant to the heat pump evaporator, the refrigerant output by the heat pump evaporator returns to the heat pump compressor.

[0006] The above scheme is further that 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 through the switching of the first electromagnetic four-way valve and the second electromagnetic four-way valve to perform regeneration or evaporation.

[0007] The above scheme is further 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, and the heat sink corresponds to the first regeneration coil or the second regeneration coil connected to form a heat exchange structure; the regeneration work is to increase the temperature 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 for a second time and the adsorption material adsorbs and dehumidifies to form the second cold air.

[0008] The above scheme is further that 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.

[0009] A further aspect of the above scheme is that the working area is a baking room.

[0010] The above scheme is further characterized in that a blower is provided on the air outlet end.

[0011] The above solution is further that the adsorption material is silica gel, and the adsorption material is attached to the surface of the heat sink by injection molding.

[0012] The present invention uses a heat pump evaporator to perform a first cooling and dehumidification treatment on the air received at the return air end to form the first cold air; the adsorption regeneration component performs a second cooling and dehumidification treatment on the first cold air to form the second cold air; the condensation and adsorption combined dehumidification can better remove the moisture in the air, and the dryness of the second cold air can be controlled to be relatively high; finally, the second cold air is heated by the condenser to form dry hot air, and the dryness and temperature of the hot air are greatly improved, and high-temperature dry hot air is obtained, which is conducive to production needs such as drying. At the same time, the adsorption regeneration component uses the first adsorber and the second adsorber arranged in parallel to alternately pass the wind, and uses the refrigerant provided by the heat pump compressor to regenerate or evaporate the first adsorber or the second adsorber, wherein the evaporation work is synchronized with the passing wind to achieve cooling adsorption dehumidification, and the regeneration work restores the adsorption capacity of the first adsorber or the second adsorber. The overall structure of the present invention is reasonable and can be organically combined, which meets the requirements of assembly and construction on the same chassis, has a small volume, is convenient for combined implementation, and effectively reduces the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 This is a schematic diagram of a preferred combination implementation structure of the present invention; Attached Figure 2 This is a schematic diagram of the operation of a refrigerant of the present invention; Attached Figure 3 This is a second operation schematic diagram of the refrigerant of the present invention. DETAILED DESCRIPTION

[0014] The concept, specific structure and technical effects of the invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the invention.

[0015] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0016] See also Figure 1 , 2, 3 are schematic diagrams of preferred embodiments of the present invention. The present invention is related to a high-temperature heat pump adsorption dehumidification unit, which is constructed on the same chassis 200, and is provided with a return air end 1, a heat pump evaporator 2, an adsorption regeneration component 3, a condenser 4, an air outlet 5 and a heat pump compressor 6 on the chassis 200. The structure is compact and reasonable, which is conducive to assembly and implementation. The return air end 1 is connected to the working area 100 through a pipeline, and is used to receive the air (return air) discharged from the working area 100. Of course, the situation of mixing the recycled air with the new air is not excluded, which is not limited here; the working area 100 of this embodiment is preferably a baking room, and a drying equipment is constructed for drying crops, etc. The heat pump evaporator 2 is used to perform the first cooling and dehumidification treatment on the air received by the return air end 1 to form the first cold air. The condensation dehumidification method is used to cool the water vapor in the air to condense it into liquid water, and then remove or recycle it, thereby realizing humidity control. The adsorption regeneration component 3 has a first adsorber 31 and a second adsorber 32 arranged in parallel, and the first adsorber 31 and the second adsorber 32 alternately pass through the air. 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 the second cold air. The work of alternating passing through the air can be achieved by switching the air path through the damper control, that is, different air paths are also arranged in parallel to match the first adsorber 31 and the second adsorber 32 respectively, and then the different air paths are switched through the damper to achieve the alternating passing of the air between the first adsorber 31 and the second adsorber 32. The second cooling and dehumidification treatment is based on dehumidification by adsorption, 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 the dry hot air to the working area 100. In this embodiment, a blower 51 is provided on the air outlet 5 to achieve positive pressure air supply, which is conducive to drying work. The present invention realizes condensation and adsorption combined 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. The dryness and temperature of the hot air are greatly improved, which is beneficial to production needs such as drying. The heat pump compressor 6 is used to compress the refrigerant and transport it to the adsorption regeneration component 3, the condenser 4 and the heat pump evaporator 2, and then return to the circulation to form a closed-loop operation. When the refrigerant passes through the first adsorber 31 and the second adsorber 32, the regeneration work and the evaporation work are performed respectively, wherein the evaporation work is synchronized with the over-winding, so as to achieve efficient adsorption under low temperature conditions and remove moisture from the air.

[0017] Figure 2 , 3As shown, in this embodiment, 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 first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72 cooperate to guide the movement of the refrigerant, so that the first adsorber 31 and the second adsorber 32 alternately switch between regeneration work and evaporation work; wherein the refrigerant used for regeneration work comes out of 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 in the figure passes through the first electromagnetic four-way valve 71, the first adsorber 31 and the second electromagnetic four-way valve 72 and then enters the condenser 4; Figure 3 The refrigerant from the heat pump compressor 6 shown in the figure passes through the first electromagnetic four-way valve 71, the second adsorber 32 and the second electromagnetic four-way valve 72 and then enters the condenser 4. The delivery end of the condenser 4 is connected to the first refrigerant branch 81 and the second refrigerant branch 82 which are arranged in parallel. 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 then returns 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 work; after the second refrigerant branch 82 guides the refrigerant to the heat pump evaporator 2, the refrigerant output by the heat pump evaporator 2 returns to the heat pump compressor 6. Figure 2 The refrigerant delivered from the condenser 4 shown in the figure passes through the second electromagnetic four-way valve 72, the second adsorber 32 and the first electromagnetic four-way valve 71 and then returns to the heat pump compressor 6; 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 71 .

[0018] 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 transfer 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 transfer system; the refrigerant is introduced into the first regeneration coil 312 and the second regeneration coil 322 through the switching of the first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72 to perform regeneration or evaporation. Further, 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, and the heat sink corresponds to the first regeneration coil 312 or the second regeneration coil 322 to form a heat exchange structure; the regeneration work is to heat up and remove the moisture adsorbed on the adsorption material, so that the adsorption material recovers its adsorption capacity; the evaporation work is to cool the first cold air for the second time and form the second cold air by adsorption and dehumidification by the adsorption material. Preferably, the adsorbent material is silica gel, and the adsorbent material is attached to the surface of the heat sink by injection molding, which has a simple and compact structure, is practical and has a long service life. The first adsorber 31 and the second adsorber 32 are constructed into a heat exchange structure, which is conducive to over-wind adsorption and can make good use of high-temperature and high-pressure refrigerant for regeneration. The first electromagnetic four-way valve 71 and the second electromagnetic four-way valve 72 cooperate to guide the movement of the refrigerant, which can conveniently and quickly realize the alternating operation of the first adsorber 31 and the second adsorber 32, and has a simple structure and is easy to implement.

[0019] In this embodiment, a 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; a 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. Through the regulation of the first electronic expansion valve 811 and the second electronic expansion valve 821, the evaporation effect can be ensured, thereby improving the air dehumidification effect.

[0020] The present invention uses a heat pump evaporator to perform a first cooling and dehumidification treatment on the air received at the return air end to form the first cold air; the adsorption regeneration component performs a second cooling and dehumidification treatment on the first cold air to form the second cold air; the condensation and adsorption combined dehumidification is realized, which can better remove the moisture in the air, and finally the second cold air is heated by the condenser to form dry hot air, and the dryness and temperature of the hot air are greatly improved, which meets the production needs of making high-temperature dry hot air and facilitating drying. At the same time, the adsorption regeneration component uses the first adsorber and the second adsorber arranged in parallel to alternately pass the wind, and uses the refrigerant provided by the heat pump compressor to regenerate or evaporate the first adsorber or the second adsorber, wherein the evaporation work is synchronized with the passing wind to achieve cooling adsorption dehumidification, and the regeneration work restores the adsorption capacity of the first adsorber or the second adsorber. The overall structure of the present invention is reasonable and can be organically combined, which meets the requirements of assembly and construction on the same chassis, has a small volume, is convenient for combined implementation, and effectively reduces the cost of use.

[0021] Although the preferred specific embodiments of the present invention are described above in conjunction with the accompanying drawings, the present invention should not be limited to the structures and operations that are exactly the same as the above descriptions and drawings. For those skilled in the art, many equivalent improvements and changes can be made to the above embodiments through logical analysis, reasoning or limited experiments without exceeding the concept and scope of the present invention, but these improvements and changes should all fall within the scope of protection required by the present invention.

Claims

1. High temperature heat pump adsorption dehumidification unit, characterized in that: have: An air return end (1) receives air exhausted from the working area (100); A heat pump evaporator (2) is used to perform a first cooling and dehumidification process on the air received by the return air end (1) to form first cold air; An adsorption regeneration component (3), the adsorption regeneration component (3) comprising a first adsorber (31) and a second adsorber (32) arranged in parallel, and the first adsorber (31) and the second adsorber (32) alternately passing air therethrough, for performing a second cooling and dehumidification process on the first cold air to form second cold air; A condenser (4) is used to heat the second cold air to form dry hot air; An air outlet (5) guides and delivers the dry hot air to the working area (100); The heat pump compressor (6) is used to compress the refrigerant and deliver it to the adsorption regeneration component (3), the condenser (4) and the heat pump evaporator (2) and then return it for circulation. When the refrigerant passes through the first adsorber (31) and the second adsorber (32), the refrigerant performs regeneration and evaporation respectively, wherein the evaporation is synchronized with the air flow.

2. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that: 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 first electromagnetic four-way valve (71) and the second electromagnetic four-way valve (72) cooperate to guide the movement of the refrigerant, so that the first adsorber (31) and the second adsorber (32) alternately switch between regeneration work and evaporation work; wherein the refrigerant used for the regeneration work comes out of the heat pump compressor (6) and passes through the first electromagnetic four-way valve (71), the adsorption regeneration component (3), and the condenser (4). The refrigerant passes through the first refrigerant branch (81) and the second solenoid four-way valve (72) and then enters the condenser (4); the delivery end of the condenser (4) is connected to a first refrigerant branch (81) and a second refrigerant branch (82) which are arranged in parallel; the first refrigerant branch (81) guides the refrigerant through the second solenoid four-way valve (72), the adsorption regeneration component (3) and the first solenoid four-way valve (71) and then returns 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).

3. The high temperature heat pump adsorption dehumidification unit according to claim 2, characterized in that: 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) through the switching of the first electromagnetic four-way valve (71) and the second electromagnetic four-way valve (72) to perform regeneration or evaporation.

4. The high-temperature heat pump adsorption dehumidification unit according to claim 3, 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, and the heat sink corresponds to the first regeneration coil (312) or the second regeneration coil (322) connected to form a heat exchange structure; the regeneration work is to increase the temperature 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 for a second time and form the second cold air through adsorption and dehumidification by the adsorption material.

5. The high temperature heat pump adsorption dehumidification unit according to claim 2, characterized in that: A 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); a 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).

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

7. The high-temperature heat pump adsorption dehumidification unit according to claim 1, characterized in that: The air outlet end (5) is provided with an air blower (51).

8. The high temperature heat pump adsorption dehumidification unit according to claim 4, characterized in that: The adsorption material is silica gel, and the adsorption material is attached to the surface of the heat sink by injection molding.

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