Multifunctional universal dehumidification unit

Abstract

The invention relates to the technical field of dehumidifiers, in particular to a multifunctional universal dehumidification unit. Condensation heat is used for heating regeneration air of the rotating wheel, heating after treatment air and supplying heat of domestic hot water, and efficient utilization of the condensation heat is achieved. Secondly, refrigeration, heating and dehumidification modes can be flexibly switched according to requirements, and the functions of fresh air composite dehumidification, fresh air heating and cooling and domestic hot water supply are achieved; in addition, high-efficiency and energy-saving temperature and humidity regulation and control can be kept under the full-working-condition temperature and humidity conditions and under various dehumidification requirements; according to the design, the advantages of cooling dehumidification and rotary wheel dehumidification are combined, the defects that rotary wheel dehumidification regeneration energy consumption is high and cooling dehumidification is low in dehumidification efficiency at low temperature are overcome, efficient dehumidification under different temperature and humidity is achieved through flexible switching of multiple modes and efficient utilization of condensation heat, and the function of providing domestic hot water is additionally achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dehumidifiers, in particular to a multifunctional and universal dehumidifier unit. BACKGROUND

[0002] In the field of dehumidification technology, the three major technologies of cooling dehumidification, rotary dehumidification and solution dehumidification each have their unique advantages. Cooling dehumidification lowers the temperature of fresh air to promote water vapor in the air to reach a saturated state and condense and precipitate, achieving dehumidification effect, which can effectively reduce air humidity in a conventional temperature and humidity environment. Rotary dehumidification uses the adsorbent on the surface of the rotary wheel to absorb moisture in the air, and through heating, the adsorbent releases moisture and restores its adsorption capacity, achieving regeneration and cyclic use, which can still maintain ideal dehumidification performance under low temperature conditions. Solution dehumidification technology uses hygroscopic solution to absorb water vapor through physical adsorption or chemical reaction when the solution contacts with air, which has high dehumidification efficiency and can operate efficiently under low temperature conditions, especially suitable for high humidity environments.

[0003] However, cooling dehumidification has significantly reduced efficiency under low temperature conditions, making it difficult to meet the high dehumidification requirements in the shipbuilding process. Rotary dehumidification has good low temperature performance, but the heating energy consumption of the regeneration air is large, which restricts its wide application. Solution dehumidification technology requires regular replacement or regeneration of the solution, some of which have strong corrosive properties, and the equipment structure is complex, requiring high sealing performance and operating precision, resulting in high operating costs and heavy maintenance workload, making it difficult to be widely used in shipyards and other scenarios with high requirements for cost and operational convenience. SUMMARY

[0004] The present application aims to provide a multifunctional and universal dehumidifier unit, which solves the technical problems in the prior art that cooling dehumidification has significantly reduced efficiency under low temperature conditions, making it difficult to meet the high dehumidification requirements in the shipbuilding process; rotary dehumidification has good low temperature performance, but the heating energy consumption of the regeneration air is large, which restricts its wide application; solution dehumidification technology requires regular replacement or regeneration of the solution, some of which have strong corrosive properties, and the equipment structure is complex, requiring high sealing performance and operating precision, resulting in high operating costs and heavy maintenance workload, making it difficult to be widely used in shipyards and other scenarios with high requirements for cost and operational convenience.

[0005] In order to achieve the above object, the application adopts a multifunctional and universal dehumidifier unit, which comprises an evaporator, a plate heat exchanger, a first finned tube heat exchanger and a second finned tube heat exchanger, one end of the evaporator is connected with a fresh air filter, the outlet of the evaporator is connected with the screw compressor through a four-way reversing valve, one end of the evaporator is connected with a hot water heater, one end of the hot water heater is connected with a treated air electric heater, one end of the treated air electric heater is connected with a centrifugal treated air fan, the outlet of the plate heat exchanger is connected with a hot water tank, one end of the first finned tube heat exchanger is connected with a regeneration air filter, the other end of the first finned tube heat exchanger is connected with a regeneration air electric heater, one end of the regeneration air electric heater is connected with a dehumidification runner, the dehumidification runner is also connected between the evaporator and the hot water heater, one end of the dehumidification runner is connected with a centrifugal regeneration air fan, one end of the second finned tube heat exchanger is connected with an axial flow condensing fan, the outlet of the screw compressor is connected with the plate heat exchanger, the first finned tube heat exchanger and the second finned tube heat exchanger respectively, the hot water tank is connected with the hot water heater through a water pump, and the outlet of the hot water heater is connected with the plate heat exchanger.

[0006] In the refrigerant circuit, the refrigerant is divided into three parallel condensing branches after passing through the screw compressor, the refrigerant flow of the three parallel condensing branches is combined and then flows into the evaporator through the expansion valve, and the refrigerant flow of the three parallel condensing branches is regulated by valves.

[0007] The three parallel condensing branches are the plate heat exchanger, the first finned tube heat exchanger and the second finned tube heat exchanger respectively.

[0008] In the treated air flow path, air passes through the fresh air filter, the evaporator, the dehumidification runner, the hot water heater, the treated air electric heater and the centrifugal treated air fan in turn from upstream to downstream.

[0009] In the regeneration air flow path, air passes through the regeneration air filter, the first finned tube heat exchanger, the regeneration air electric heater, the dehumidification runner and the centrifugal regeneration air fan in turn from upstream to downstream.

[0010] In the hot water circuit, the outlet water of the plate heat exchanger flows through the hot water tank, the water pump and the hot water heater in turn.

[0011] The low-temperature hot water at the outlet of the hot water heater flows into the plate heat exchanger, and the second finned tube heat exchanger exchanges heat with the air cooling of the external environment through the axial flow condensing fan.

[0012] The multifunctional universal dehumidifier unit of the present application firstly combines cooling dehumidification and rotary dehumidification technologies, can realize deep dehumidification and has low energy consumption; adopts condensation heat recovery optimization design, uses condensation heat for rotary regeneration air heating, post-treatment air heating and domestic hot water heating, realizes efficient use of condensation heat; secondly, can flexibly switch refrigeration, heating and dehumidification modes according to requirements, has the functions of fresh air composite dehumidification, fresh air heating and cooling and domestic hot water supply; in addition, under the conditions of full working temperature and humidity and various dehumidification requirements, high-efficiency and energy-saving temperature and humidity regulation and control can be maintained; finally, through optimization of cooperation and control strategy among various components, stable operation of the system under different working conditions can be ensured, the strict requirements of shipyards on temperature and humidity control during shipbuilding can be met, the present design combines the advantages of cooling dehumidification and rotary dehumidification, makes up for the high regeneration energy consumption of rotary dehumidification and the low dehumidification efficiency of cooling dehumidification at low temperature, realizes high-efficiency dehumidification under different temperature and humidity conditions through flexible switching of multiple modes and efficient use of condensation heat, and has the function of providing domestic hot water. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0014] Figure 1 It is a principle schematic diagram of the multifunctional universal dehumidifier unit of the present application.

[0015] 1-evaporator, 2-screw compressor, 3-plate heat exchanger, 4-first finned tube heat exchanger, 5-second finned tube heat exchanger, 6-expansion valve, 7-hot water tank, 8-water pump, 9-hot water heater, 10-dehumidification runner, 11-treatment air electric heater, 12-regeneration air electric heater, 13-centrifugal treatment fan, 14-centrifugal regeneration fan, 15-axial condensing fan, 16-fresh air filter, 17-four-way reversing valve, 18-regeneration air filter. DETAILED DESCRIPTION

[0016] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0017] Please refer to Figure 1The application provides a multifunctional and universal dehumidifier unit, which comprises an evaporator 1, a plate heat exchanger 3, a first finned tube heat exchanger and a second finned tube heat exchanger, one end of the evaporator 1 is connected with a fresh air filter 16, the outlet of the evaporator 1 is connected with the screw compressor 2 through a four-way reversing valve 17, one end of the evaporator 1 is connected with a hot water heater 9, one end of the hot water heater 9 is connected with a treated air electric heater 11, one end of the treated air electric heater 11 is connected with a centrifugal treated air fan 13, the outlet of the plate heat exchanger 3 is connected with a hot water tank 7, one end of the first finned tube heat exchanger is connected with a regenerative air filter 18, the other end of the first finned tube heat exchanger is connected with a regenerative air electric heater 12, one end of the regenerative air electric heater 12 is connected with a dehumidification runner 10, the dehumidification runner 10 is also connected between the evaporator 1 and the hot water heater 9, one end of the dehumidification runner 10 is connected with a centrifugal regenerative air fan 14, one end of the second finned tube heat exchanger is connected with an axial condensing air fan 15, the outlet of the screw compressor 2 is connected with the plate heat exchanger 3, the first finned tube heat exchanger and the second finned tube heat exchanger respectively, the hot water tank 7 is connected with the hot water heater 9 through a water pump 8, and the outlet of the hot water heater 9 is connected with the plate heat exchanger 3.

[0018] In the embodiment, the screw compressor 2 is used for compressing low-pressure refrigerant gas into high-pressure refrigerant gas, the evaporator 1 is used for cooling, heating or dehumidifying fresh air, the dehumidification runner 10 is used for deeply dehumidifying treated air and regenerating the treated air, and the fans are used for providing air supply power, wherein the regenerative air fan and the treated air fan are centrifugal fans, the condensing air fan is an axial fan, the plate heat exchanger 3 is connected with the hot water tank 7 and the hot water heater 9 through the water pump 8, part of the condensing heat is input into the hot water heater 9 for heating the treated air, and part of the condensing heat is used for supplying heat for domestic hot water, the first finned tube heat exchanger 4 is used for preliminarily heating regenerative air, the second finned tube heat exchanger 5 is matched with the axial condensing air fan 15 to discharge the excess heat of the unit to the external environment, the hot water heater 9 is used for heating the treated air, the treated air electric heater 11 is used for assisting in heating the treated air, so that the temperature of the air supply is accurately controlled, the regenerative air electric heater 12 is used for further heating the regenerative air, so that the regenerative air reaches a specified regeneration temperature, through optimizing the cooperation and control among the components, the high-efficiency and energy-saving temperature and humidity control under different working conditions and requirements can be realized, the unit can be flexibly switched between the refrigeration, heating and dehumidification modes, has the functions of fresh air dehumidification, fresh air temperature adjustment and hot water supply, and is particularly suitable for temperature and humidity control in special environments such as shipyards.

[0019] Further, in the refrigerant circuit, the refrigerant is divided into three parallel condensing branches after passing through the screw compressor 2, the refrigerant flow of the three parallel condensing branches is combined and then flows into the evaporator 1 through the expansion valve 6, and the refrigerant flow of the three parallel condensing branches is regulated by valves.

[0020] Further, the three parallel condensing branches are the plate heat exchanger 3, the first finned tube heat exchanger, and the second finned tube heat exchanger, respectively.

[0021] Further, in the process air flow path, the air passes through the fresh air filter 16, the evaporator 1, the dehumidification wheel 10, the hot water heater 9, the process air electric heater 11, and the centrifugal process air fan 13 in sequence from upstream to downstream.

[0022] Further, in the regeneration air flow path, the air passes through the regeneration air filter 18, the first finned tube heat exchanger, the regeneration air electric heater 12, the dehumidification wheel 10, and the centrifugal regeneration air fan 14 in sequence from upstream to downstream.

[0023] Further, in the hot water circuit, the water outlet of the plate heat exchanger 3 flows through the hot water tank 7, the water pump 8, and the hot water heater 9 in sequence.

[0024] Further, the low-temperature hot water at the outlet of the hot water heater 9 flows into the plate heat exchanger 3, and the second finned tube heat exchanger exchanges heat with the ambient environment through the axial flow condensing fan 15.

[0025] In this embodiment, the design has four temperature and humidity control modes: refrigeration dehumidification, heating dehumidification, refrigeration cooling, and heating warming.

[0026] 1. Refrigeration dehumidification mode: the screw compressor 2 is started, the fresh air first passes through the fresh air filter 16 to filter out large particles and dust, then enters the evaporator 1 for cooling and condensation to achieve preliminary dehumidification, and then passes through the dehumidification wheel 10 for deep dehumidification according to the demand to strictly control the humidity of the supply air; the processed air after dehumidification is heated by the hot water heater 9, and then heated by the process air electric heater 11 according to the demand to accurately control the temperature of the supply air; after the processed air reaches the set temperature and humidity, it is sent into the indoor space by the process air fan, and the regeneration air passes through the first finned tube heat exchanger 4 after passing through the regeneration air filter 18, and then is further heated by the regeneration air electric heater 12 according to the demand to reach the specified regeneration temperature, and then enters the dehumidification wheel 10 to release the water in the adsorbent on the surface of the wheel to realize the regeneration process, and finally is discharged to the external environment by the regeneration air fan.

[0027] In this mode, the processing air realizes temperature reduction and dehumidification, and strict control of temperature and humidity is realized. The system preferentially utilizes condensation heat to heat the regeneration air and the processing air through the first finned tube heat exchanger 4 and the hot water heater 9 respectively. After the heating demand is met, the remaining condensation heat is used for domestic hot water supply through the plate heat exchanger 3. The heat that cannot be utilized is discharged to the external environment through the second finned tube heat exchanger 5 and the axial flow condensing fan 15.

[0028] 2. Heating and dehumidification mode: the four-way valve 17 is opened, and the screw compressor 2 is started. The fresh air first passes through the fresh air air filter 16, then enters the original evaporator 1 to be heated and warmed up, and then enters the dehumidification wheel 10 to be dehumidified. The processing air reaches the set temperature and humidity, and is then sent into the room by the processing air fan. The regeneration air first passes through the regeneration air air filter 18, and then is heated only by the regeneration air electric heater 12 to reach the regeneration temperature, and then enters the dehumidification wheel 10 for regeneration treatment, and is finally discharged to the external environment by the regeneration air fan.

[0029] In this mode, the processing air realizes temperature reduction and dehumidification, and strict control of temperature and humidity is realized. The system preferentially utilizes condensation heat to heat the regeneration air and the processing air through the first finned tube heat exchanger 4 and the hot water heater 9 respectively. After the heating demand is met, the remaining condensation heat is used for domestic hot water supply through the plate heat exchanger 3. The heat that cannot be utilized is discharged to the external environment through the second finned tube heat exchanger 5 and the axial flow condensing fan 15.

[0030] 3. Cooling mode: the screw compressor 2 is started, and the regeneration air fan is not started. The fresh air passes through the fresh air air filter 16 and then enters the evaporator 1 to be cooled and reduced in temperature. The processing air reaches the set temperature and is then sent into the room by the processing air fan.

[0031] In this mode, the processing air realizes temperature reduction and dehumidification, and strict control of temperature and humidity is realized. The system preferentially utilizes condensation heat to heat the regeneration air and the processing air through the first finned tube heat exchanger 4 and the hot water heater 9 respectively. After the heating demand is met, the remaining condensation heat is used for domestic hot water supply through the plate heat exchanger 3. The heat that cannot be utilized is discharged to the external environment through the second finned tube heat exchanger 5 and the axial flow condensing fan 15.

[0032] 4. Heating mode: the four-way valve 17 is opened, and the screw compressor 2 is started. The fresh air passes through the fresh air air filter 16 and then enters the original evaporator 1 to be heated and warmed up. The processing air reaches the set temperature and is then sent into the room by the processing air fan.

[0033] In this mode, the process air realizes the heating process, only the control of the fresh air temperature exists, the system closes the valves A and B, only opens the valve C, the plate heat exchanger 3, the first finned tube heat exchanger 4, the hot water heater 9 and the regeneration air electric heater 12 do not work, do not provide domestic hot water, the unit takes heat from the outside environment through the second finned tube heat exchanger 5 and the axial flow condensing fan 15, and provides heat to the original evaporator 1 through the heat pump system.

[0034] The above only discloses a preferred embodiment of the present application, of course, cannot be limited by this to limit the scope of the present application, those skilled in the art can understand that the implementation of all or part of the above-mentioned embodiments, and the equivalent changes made according to the claims of the present application, still belong to the scope covered by the present application.

Claims

1. A multifunctional universal dehumidifier unit, characterized in that: The utility model comprises an evaporator, a plate heat exchanger, a first fin-tube heat exchanger and a second fin-tube heat exchanger, one end of the evaporator is connected to a fresh air filter, the outlet of the evaporator is connected to the screw compressor through a four-way reversing valve, one end of the evaporator is connected to a hot water heater, one end of the hot water heater is connected to a process wind electric heater, one end of the process wind electric heater is connected to a centrifugal process fan, the outlet of the plate heat exchanger is connected to a hot water tank, one end of the first fin-tube heat exchanger is connected to a regeneration air filter, the other end of the first fin-tube heat exchanger is connected to a regeneration air filter, and the outlet of the plate heat exchanger is connected to a hot water tank. One end is connected to a regenerative wind electric heater, one end of the regenerative wind electric heater is connected to a dehumidification wheel, and the dehumidification wheel is also connected between the evaporator and the hot water heater, one end of the dehumidification wheel is connected to a centrifugal regeneration fan, one end of the second fin-tube heat exchanger is connected to an axial flow condensing fan, the outlet of the screw compressor is respectively connected to the plate heat exchanger, the first fin-tube heat exchanger and the second fin-tube heat exchanger, the hot water tank is connected to the hot water heater through a water pump, and the outlet of the hot water heater is connected to the plate heat exchanger.

2. The multifunctional universal dehumidifier unit according to claim 1, characterized in that: In the refrigerant circuit, the refrigerant is divided into three parallel condensation branches after passing through the screw compressor. The refrigerant flow rates of the three parallel condensation branches are merged and throttled through the expansion valve to flow into the evaporator, and the refrigerant flow rates of the three parallel condensation branches are all regulated by valves.

3. The multifunctional universal dehumidifier unit according to claim 2, characterized in that: The three parallel condensation branches are the plate heat exchanger, the first fin-tube heat exchanger and the second fin-tube heat exchanger.

4. The multifunctional universal dehumidifier unit according to claim 3, characterized in that: In the process air flow path, the air passes through the fresh air filter, the evaporator, the dehumidification wheel, the hot water heater, the process air electric heater and the centrifugal process fan in sequence from upstream to downstream.

5. The multifunctional universal dehumidifier unit according to claim 4, characterized in that: In the regeneration air flow path, the air passes through the regeneration air filter, the first fin-tube heat exchanger, the regeneration air electric heater, the dehumidification wheel and the centrifugal regeneration fan in sequence from upstream to downstream.

6. The multifunctional universal dehumidifier unit according to claim 5, characterized in that: In the hot water circuit, the outlet water of the plate heat exchanger flows through the hot water tank, the water pump and the hot water heater in sequence.

7. The multifunctional universal dehumidifier unit according to claim 6, characterized in that: The low-temperature hot water at the outlet of the hot water heater flows into the plate heat exchanger, and the second fin-tube heat exchanger exchanges heat with the external environment through air supplied by the axial-flow condensing fan.

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