CN213334742U - Air conditioning unit - Google Patents
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- CN213334742U CN213334742U CN202022071696.0U CN202022071696U CN213334742U CN 213334742 U CN213334742 U CN 213334742U CN 202022071696 U CN202022071696 U CN 202022071696U CN 213334742 U CN213334742 U CN 213334742U
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Abstract
The application discloses air conditioning unit, including the air supply cavity, the cavity of airing exhaust, the air supply subassembly, the refrigerant system, control system, air supply subassembly drive gas is in proper order through the air supply cavity, indoor environment and the cavity of airing exhaust, the refrigerant system includes the compressor, the evaporimeter, a condenser, the cross valve, the choke valve, the condenser is including parallelly connected first condenser and the second condenser that distributes, the evaporimeter is located in the air supply cavity, the second condenser is located in the air supply cavity, and the second condenser is located between the export of evaporimeter and air supply cavity, the refrigerant interface of second condenser all is equipped with flow control valve, first condenser is located in the cavity of airing exhaust. The air conditioning unit can recover condensation heat, extra energy consumption investment is not needed, and energy consumption of the air conditioning unit is reduced; meanwhile, the frosting is not easy to occur, and the stable operation can be realized without stopping the machine all the year round.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioning unit.
Background
In a direct evaporative air conditioning system, the air is usually cooled and dehumidified by an evaporator to achieve the required amount of dehumidification. Meanwhile, in order to ensure the constant indoor temperature and humidity of the air conditioning system, the dehumidified air with lower temperature needs to be reheated to the appropriate temperature and humidity and then sent into the room. The heating medium used for heating is usually electricity, hot water, steam, fuel gas and the like, and in short, extra energy consumption investment is needed, so that energy waste is caused. In addition, the air conditioning system adopts a mode of combining the outdoor unit and the direct evaporation type indoor air conditioner, when the air conditioning system is applied in winter, the outdoor unit can frost due to low environmental temperature, defrosting is needed, and the air conditioning system is shut down, so that the air conditioning system cannot be stably operated without shutting down all the year round.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present application is to provide an air conditioning unit, which can recover condensation heat and reduce energy consumption; meanwhile, the frosting is not easy to occur, and the stable operation can be realized without stopping the machine all the year round.
In order to achieve the above purpose, the present application provides the following technical solutions:
an air conditioning assembly comprising:
the air supply cavity is provided with an inlet and an outlet for supplying air to an indoor environment;
the air exhaust cavity is provided with an outlet and an inlet for exhausting indoor environment air;
the air supply assembly is used for driving air to enter the room from the air supply cavity and driving air to enter the air exhaust cavity from an indoor environment;
refrigerant system, including compressor, evaporimeter, condenser, cross valve, choke valve, the condenser includes first condenser and second condenser, first condenser with the second condenser passes through the parallelly connected setting of refrigerant pipeline, the evaporimeter is located in the air supply cavity, the second condenser is located in the air supply cavity, just the second condenser is located the evaporimeter with between the export of air supply cavity, the refrigerant interface of second condenser all is equipped with flow control valve, first condenser is located in the cavity of airing exhaust.
And the air supply assembly, the compressor, the four-way valve and the flow control valve are all electrically connected with the control system.
Optionally, the air supply cavity and the air exhaust cavity are arranged in the same box body, and a partition board for separating the air supply cavity and the air exhaust cavity is arranged in the box body.
Optionally, a humidifying device is arranged in the air supply cavity, the humidifying device is arranged between the second condenser and the outlet of the air supply cavity, and the humidifying device is electrically connected with the control system.
Optionally, the air supply assembly includes a first fan and a second fan, the first fan is disposed between the humidifying device and the outlet of the air supply cavity, and the second fan is disposed between the first condenser and the outlet of the air exhaust cavity.
Optionally, a heating device is arranged in the air supply cavity, the heating device is arranged between an inlet of the air supply cavity and the evaporator, and the heating device is electrically connected with the control system.
Optionally, an air inlet filtering device is arranged in the air supply cavity, and the air inlet filtering device is arranged between an inlet of the air supply cavity and the heating device.
Optionally, an exhaust air filtering device is arranged in the exhaust air cavity, and the exhaust air filtering device is arranged between an inlet of the exhaust air cavity and the first condenser.
Optionally, the compressor is disposed between the evaporator and the second condenser.
Optionally, an inlet of the air supply cavity is provided with a first temperature and humidity sensor, a first temperature sensor is arranged between the compressor and the second condenser, an outlet of the air supply cavity is provided with a second temperature and humidity sensor, an inlet of the air exhaust cavity is provided with a second temperature sensor, and the first temperature and humidity sensor, the first temperature sensor, the second temperature and humidity sensor and the second temperature sensor are all electrically connected with the control system.
Through above-mentioned scheme, the air conditioning unit that this application provided's beneficial effect lies in:
the application provides an air conditioning unit is including the air supply cavity, the cavity of airing exhaust, the air supply subassembly, the refrigerant system, control system, air supply subassembly driving gas is in proper order through the air supply cavity, indoor environment and the cavity of airing exhaust, the refrigerant system includes the compressor, the evaporimeter, a condenser, the cross valve, the choke valve, the condenser is including parallelly connected first condenser and the second condenser that distributes, the evaporimeter is located in the air supply cavity, the second condenser is located in the air supply cavity, and the second condenser is located between the export of evaporimeter and air supply cavity, the refrigerant interface of second condenser all is equipped with flow control valve, first condenser is located in the cavity of airing exhaust.
When the air conditioner runs in summer, the air conditioner unit needs to refrigerate for indoor environment, and the evaporator is refrigerated through the logic control of the control system, so that the moisture content of air is reduced; and meanwhile, the first condenser and the second condenser are controlled to heat, so that the dehumidified air reaches the temperature required by a user. Because the heat source used for heating is the second condenser, heat sources such as electricity, hot water, steam, fuel gas and the like are not needed, extra energy consumption investment is not needed, and the energy consumption of the air conditioning unit is reduced.
When the air conditioning unit operates in winter, the indoor environment needs to be heated, the evaporator is heated through the logic control of the control system, the first condenser is cooled, all the flow control valves are closed, and the second condenser is closed. Because the first condenser is arranged in the air exhaust cavity, the air exhausted from the indoor environment circulates in the air exhaust cavity, and the temperature of the indoor environment is higher than that of the outdoor environment, the first condenser is not easy to frost and can stably run without stopping all the year round.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an air conditioning unit according to an embodiment of the present disclosure; the arrows in the figure indicate the direction of flow of the gas;
fig. 2 is a schematic diagram illustrating an operation of a refrigerant system for cooling an indoor environment according to an embodiment of the present disclosure; in the figure, arrows indicate the flow direction of the refrigerant;
fig. 3 is a schematic diagram illustrating a working principle of a refrigerant system for heating an indoor environment according to an embodiment of the present disclosure; the arrows in the figure indicate the direction of flow of the refrigerant.
The reference numbers in the figures are:
1-air supply cavity, 2-air inlet filtering device, 3-heating device, 4-evaporator, 5-compressor, 6-second condenser, 7-humidifying device, 8-first fan, 9-air exhaust cavity, 10-air exhaust filtering device, 11-first condenser, 12-second fan, 13-first temperature and humidity sensor, 14-first temperature sensor, 15-second temperature and humidity sensor, 16-second temperature sensor, 17-throttle valve, 18-four-way valve, 19-flow control valve and 20-indoor environment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, an air conditioning unit provided in the present application may include: air supply cavity 1, air exhaust cavity 9, air supply assembly, refrigerant system, control system.
The air supply cavity 1 and the air exhaust cavity 9 are two independent cavities. The air supply cavity 1 is provided with an inlet and an outlet, the inlet is connected with the outdoor environment, and the outlet is used for supplying air to the indoor environment 20. The exhaust cavity 9 is provided with an inlet and an outlet, the inlet is used for exhausting the gas in the indoor environment 20, and the outlet is connected with the outdoor environment.
In practical application, the air supply cavity 1 and the air exhaust cavity 9 can be integrated in a box body, the air supply cavity 1 and the air exhaust cavity 9 are both arranged inside the box body, and meanwhile, the partition board is arranged inside the box body, so that the air supply cavity 1 and the air exhaust cavity 9 are isolated and distributed through the partition board. The cabinet may be disposed in an indoor environment 20. The air supply cavity 1 and the air exhaust cavity 9 can be arranged in an up-down layered mode, and the air supply cavity 1 and the air exhaust cavity 9 are located on the upper side and the lower side of the partition respectively. The air supply cavity 1 and the air exhaust cavity 9 can also be respectively arranged in one box body, and the two box bodies are arranged in a split mode and are installed according to actual position requirements.
The air supply assembly is used for driving air to enter a room from the air supply cavity 1 and driving air to enter the air exhaust cavity 9 from the indoor environment 20. Alternatively, in an embodiment, the air supply assembly comprises a first fan 8 and a second fan 12, the first fan 8 being arranged in the air supply chamber 1, for example in particular between the humidifying device 7 and the outlet of the air supply chamber 1, the second fan 12 being arranged in the exhaust chamber 9, for example in particular between the first condenser 11 and the outlet of the exhaust chamber 9.
The refrigerant system comprises a compressor 5, an evaporator 4, two condensers, a four-way valve 18 and a throttle valve 17, the two condensers are respectively a first condenser 11 and a second condenser 6, the first condenser 11 and the second condenser 6 are arranged in parallel through refrigerant pipelines, refrigerant interfaces of the second condenser 6 are respectively provided with a flow control valve 19, and the flow control valves 19 can adopt electromagnetic valves.
The connection relationship of each part in the refrigerant system is as follows:
the inlet and the outlet of the compressor 5 are respectively connected with the first interface and the second interface of the indirect four-way valve 18; the evaporator 4 is provided with two interfaces, one interface is connected with a third interface of the four-way valve 18, and the other interface is connected with one side of the throttle valve 17; the first condenser 11 and the second condenser 6 are respectively provided with two interfaces, one interface of the first condenser 11 and one interface of the second condenser 6 are connected with the other side of the throttle valve 17 through a refrigerant pipeline, and the other interface of the first condenser 11 and the other interface of the second condenser 6 are connected with a fourth interface of the four-way valve 18 through a refrigerant pipeline. The four-way valve 18 can enable different interfaces to be communicated through switching of valve positions, when the four-way valve 18 is switched to the first valve position, the first interface and the third interface of the four-way valve 18 are communicated, and the second interface and the fourth interface are communicated; when the four-way valve 18 is switched to the second valve position, the first port and the fourth port of the four-way valve 18 are communicated, and the second port and the third port are communicated. When the air conditioning component is used for refrigerating, the condenser dissipates heat, and the evaporator 4 absorbs heat; when the air conditioning assembly heats, after the air conditioning assembly is converted through the four-way valve 18, the functions of the condenser and the evaporator 4 are exchanged, the condenser absorbs heat, and the evaporator 4 dissipates heat.
The working principle of the refrigerant system is as follows:
in summer, the air conditioning unit needs to refrigerate an indoor environment 20, referring to fig. 2, after the refrigerant sequentially passes through an outlet of a compressor 5 and a four-way valve 18, the refrigerant is divided into two paths, one path of the refrigerant enters a first condenser 11, the other path of the refrigerant enters a second condenser 6, the two paths of the refrigerant are gathered and then pass through a throttle valve 17 and an evaporator 4, and finally return to the compressor 5 through the four-way valve 18. At this time, the evaporator 4 cools, and both the first condenser 11 and the second condenser 6 heat.
In winter, the air conditioning unit needs to heat an indoor environment 20, referring to fig. 3, after a refrigerant sequentially passes through an outlet of a compressor 5, a four-way valve 18, an evaporator 4 and a throttle valve 17, the refrigerant is divided into two paths, one path of the refrigerant enters a first condenser 11, the other path of the refrigerant enters a second condenser 6 (if two flow control valves 19 are closed, the refrigerant completely passes through the first condenser 11 and does not pass through the second condenser 6), and then the two paths of the refrigerant are collected and return to the compressor 5 through the four-way valve 18. At this time, the evaporator 4 heats and the first condenser 11 cools.
The installation positions of all parts in the refrigerant system are as follows:
the evaporator 4 is arranged in the air supply cavity 1, the second condenser 6 is positioned between the evaporator 4 and the outlet of the air supply cavity 1, and the first condenser 11 is arranged in the air exhaust cavity 9. The location of the compressor 5 is not limited, and it is preferable that the compressor 5 is provided between the evaporator 4 and the second condenser 6, in which case the heat generated when the compressor 5 operates can be used to heat the air, and the arrangement of the compressor 5 is also facilitated. In practical applications, the throttle valve 17 may be a throttle electronic expansion valve, the compressor 5 may be a variable frequency compressor, and the evaporator 4, the second condenser 6, and the first condenser 11 may all be straight expansion coils.
The control system is used for realizing the automatic adjustment of the air conditioning unit. The air supply assembly, the compressor 5, the four-way valve 18 and the flow control valve 19 are all electrically connected with a control system.
A humidifying device 7 is provided in the plenum chamber 1, the humidifying device 7 serving to increase the moisture content of the air entering the indoor environment 20. The position of the humidifying device 7 is not particularly limited, and it is preferably disposed between the second condenser 6 and the outlet of the blowing chamber 1. Meanwhile, the humidifying device 7 is electrically connected with a control system and is controlled by the control system. The humidifying device 7 is generally used in a dry outdoor environment, for example, in winter. The humidifying device 7 may be omitted.
A heating device 3 is arranged in the air supply chamber 1, the heating device 3 being used to increase the controlled temperature into the indoor environment 20. The position of the heating means 3 is not particularly limited, and it is preferably disposed between the inlet of the blast chamber 1 and the evaporator 4. Meanwhile, the heating device 3 is electrically connected with a control system and is controlled by the control system. The heating device 3 is generally used in cold outdoor environments, such as in winter. The heating device 3 may employ electric heating. The heating device 3 may be omitted.
The air inlet filtering device 2 is arranged in the air supply cavity 1 and used for filtering dust impurities and the like in air, and the air inlet filtering device 2 is arranged between an inlet of the air supply cavity 1 and the heating device 3. The intake air filter device 2 may be omitted.
The exhaust air filtering device 10 is arranged in the exhaust air cavity 9 and used for filtering dust, impurities and the like in air, and the exhaust air filtering device 10 is arranged between an inlet of the exhaust air cavity 9 and the first condenser 11. The intake air filter device 2 may be omitted.
The temperature and humidity sensor is used for monitoring the temperature and the humidity of different positions and sending monitoring results to the control system, and the control system adjusts the working state of each electric control element through logic control to realize automatic control. The temperature and humidity sensors may include a first temperature and humidity sensor 13, a first temperature sensor 14, a second temperature and humidity sensor 15, and a second temperature sensor 16, all of which are electrically connected to the control system. The first temperature and humidity sensor 13 is arranged at the inlet of the air supply cavity 1, the first temperature sensor 14 is arranged between the compressor 5 and the second condenser 6, the second temperature and humidity sensor 15 is arranged at the outlet of the air supply cavity 1, and the second temperature sensor 16 is arranged at the inlet of the air exhaust cavity 9.
In practical application, the temperature and the humidity of the air supplied by the air supply cavity 1 are set values, and the second temperature and humidity sensor 15 collects feedback. The temperature and the humidity of the inlet air of the air supply cavity 1 are collected by a first temperature and humidity sensor 13 and are used for detecting the moisture content of the inlet air; the temperature of the exhaust cavity 9 is collected by a second temperature sensor 16. The relation between the detected moisture content of the inlet air and the moisture content of the set value of the air supply and the relation between the temperature of the inlet air and the set temperature of the air supply are logically judged, the specific temperature required to be reached behind the evaporator 4 under the condition of different air volumes is finally determined, and the specific temperature required to be reached behind the evaporator 4 is collected and fed back by the first temperature sensor 14.
The working process and the beneficial effects of the air conditioning unit with the structure are as follows:
the operation refrigeration in summer, first condenser 11 and second condenser 6 open simultaneously, utilize logic control, through control system, let compressor 5 carry out the loading and unloading according to the demand of load, change air conditioning unit's ability output, and control flow control valve 19's action change, change the refrigerant flow that gets into first condenser 11 and second condenser 6, and the regulation of reunion choke valve 17 makes evaporimeter 4 realize different heat exchanges, and makes different temperature inlet air can both reach target dew point temperature (gather the feedback by first temperature sensor 14) behind evaporimeter 4. After the air inlet is dehumidified by the evaporator 4 or deeply dehumidified, the air inlet is heated by the second condenser 6 to meet the required air supply temperature and humidity requirements (the feedback is collected by the second temperature and humidity sensor 15), and the constant temperature and humidity of the indoor environment 20 in summer are realized. Wherein, second condenser 6 replaces heat sources such as electricity among the prior art, hot water, steam, gas, can retrieve the condensation heat, utilizes the condensation heat to the new trend heating, has avoided the new trend condensation after the dehumidification to locate at the air supply outlet, reduces the energy consumption of air conditioning unit operation, the energy saving. The first condenser 11 takes away heat of indoor application exhaust air, and is used in the whole refrigerant system instead of directly discharging the heat into the atmosphere, so that condensation heat is recovered.
In winter, the second condenser 6 is closed, only the first condenser 11 is opened, and the four-way valve 18 is reversed under the control of the flow control valve 19. Utilize logic control, through control system, let compressor 5 carry out the loading and unloading according to the demand of load, change air conditioning unit's ability output, the regulation of reunion choke valve 17 makes the unit realize different heat exchanges, and then make different temperature air intakes can both reach specific temperature (gather the feedback by first temperature sensor 14) behind evaporimeter 4, carry out adiabatic humidification by humidification device 7 at last, reach required air supply humiture requirement (gather the feedback by second temperature and humidity sensor 15), realize indoor environment 20's constant temperature and humidity winter. Meanwhile, the first condenser 11 is located in the air exhaust cavity 9, and because the temperature of the air exhausted indoors in winter is high, the first condenser 11 cannot frost, and can stably operate all the year round. The same way as the refrigeration application in summer, the heating application in winter of the air conditioning unit can also carry out condensation heat recovery. In addition, when the temperature of the inlet air is lower than a certain temperature, the air conditioning unit can be provided with the heating device 3, and the heating effect is better.
A refrigerant system in the air conditioning unit is integrally designed by adopting the compressor 5, the double condensers and the evaporator 4, can be independently used, does not have a cold water coil system, does not need to be matched with a cold water unit for use, and solves the problems that the unit cannot be independently used and the system is complex and huge because the unit needs to be matched with the cold water unit for use. The evaporator 4, the second condenser 6 and the first condenser 11 can be designed differently according to the air supply quantity and the cold quantity requirement, can be modularized and can be combined according to different requirements.
The air conditioning unit is suitable for being used at constant temperature and constant humidity of the combined air processing unit, the compressor 5 in the air conditioning unit can realize stepless regulation, the temperature of inlet air after being processed by the evaporator 4 and the second condenser 6 can be accurately controlled, the inlet air can be kept constant, and the requirement of air supply for constant temperature and constant humidity can be met. When the temperature of the inlet air is not changed and the requirements of the temperature and the humidity of the supplied air are changed, the compressor 5 and the throttle valve 17 for controlling the flow of the evaporator 4 and the second condenser 6 are correspondingly adjusted through logic control, so that the new target requirements can be met again, the air supply requirements are ensured and kept constant.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The air conditioning unit provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (9)
1. An air conditioning assembly, comprising:
the air supply device comprises an air supply cavity (1), wherein the air supply cavity (1) is provided with an inlet and an outlet for supplying air to an indoor environment (20);
the air exhaust cavity (9), the air exhaust cavity (9) is provided with an outlet and an inlet for exhausting air in an indoor environment (20);
the air supply assembly is used for driving air to enter the room from the air supply cavity (1) and driving air to enter the exhaust cavity (9) from an indoor environment (20);
the refrigerant system comprises a compressor (5), an evaporator (4), a condenser, a four-way valve (18) and a throttle valve (17), wherein the condenser comprises a first condenser (11) and a second condenser (6), the first condenser (11) and the second condenser (6) are arranged in parallel through refrigerant pipelines, the evaporator (4) is arranged in the air supply cavity (1), the second condenser (6) is positioned between the evaporator (4) and an outlet of the air supply cavity (1), refrigerant interfaces of the second condenser (6) are respectively provided with a flow control valve (19), and the first condenser (11) is arranged in the air exhaust cavity (9);
and the air supply assembly, the compressor (5), the four-way valve (18) and the flow control valve (19) are all electrically connected with the control system.
2. Air conditioning unit according to claim 1, characterized in that said air supply chamber (1) and said air exhaust chamber (9) are arranged inside the same box, said box being internally provided with partitions for separating said air supply chamber (1) and said air exhaust chamber (9).
3. Air conditioning unit according to claim 1, characterized in that a humidifying device (7) is arranged in the air supply chamber (1), the humidifying device (7) is arranged between the second condenser (6) and the outlet of the air supply chamber (1), and the humidifying device (7) is electrically connected to the control system.
4. Air conditioning assembly according to claim 3, characterized in that said air supply assembly comprises a first fan (8) and a second fan (12), said first fan (8) being arranged between said humidifying device (7) and the outlet of said air supply chamber (1), said second fan (12) being arranged between said first condenser (11) and the outlet of said air exhaust chamber (9).
5. Air conditioning unit according to claim 1, characterized in that a heating device (3) is arranged in the air supply chamber (1), said heating device (3) being arranged between the inlet of the air supply chamber (1) and the evaporator (4), said heating device (3) being electrically connected to the control system.
6. Air conditioning unit according to claim 5, characterized in that an inlet air filter (2) is arranged in the air supply chamber (1), and the inlet air filter (2) is arranged between the inlet of the air supply chamber (1) and the heating device (3).
7. Air conditioning assembly according to claim 6, characterized in that an exhaust air filter device (10) is arranged in the exhaust air cavity (9), the exhaust air filter device (10) being arranged between the inlet of the exhaust air cavity (9) and the first condenser (11).
8. Air conditioning assembly according to any of claims 1 to 7, characterized in that the compressor (5) is arranged between the evaporator (4) and the second condenser (6).
9. The air conditioning unit according to claim 8, wherein a first temperature and humidity sensor (13) is disposed at an inlet of the air supply cavity (1), a first temperature sensor (14) is disposed between the compressor (5) and the second condenser (6), a second temperature and humidity sensor (15) is disposed at an outlet of the air supply cavity (1), a second temperature sensor (16) is disposed at an inlet of the air exhaust cavity (9), and the first temperature and humidity sensor (13), the first temperature sensor (14), the second temperature and humidity sensor (15) and the second temperature sensor (16) are electrically connected to the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022071696.0U CN213334742U (en) | 2020-09-18 | 2020-09-18 | Air conditioning unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022071696.0U CN213334742U (en) | 2020-09-18 | 2020-09-18 | Air conditioning unit |
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| CN213334742U true CN213334742U (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114543204A (en) * | 2022-04-08 | 2022-05-27 | 浙江托马仕智能科技有限公司 | Constant temperature dehumidifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114543204A (en) * | 2022-04-08 | 2022-05-27 | 浙江托马仕智能科技有限公司 | Constant temperature dehumidifier |
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