CN212204815U - Terminal device of temperature and humidity independent control air conditioning system - Google Patents
Terminal device of temperature and humidity independent control air conditioning system Download PDFInfo
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- CN212204815U CN212204815U CN202020553426.0U CN202020553426U CN212204815U CN 212204815 U CN212204815 U CN 212204815U CN 202020553426 U CN202020553426 U CN 202020553426U CN 212204815 U CN212204815 U CN 212204815U
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Abstract
The utility model provides an end device of an independent temperature and humidity control air conditioning system, which comprises a return air module and a fresh air module, wherein the return air module comprises a first shell, the first shell is provided with a return air inlet and a return air outlet, a first filter and a first heat exchanger are sequentially arranged in the first shell, and a first fan is also arranged between the first heat exchanger and the return air outlet; the fresh air module comprises a second shell, a fresh air inlet and a fresh air outlet are formed in the second shell, a second filter, a second heat exchanger, a dehumidifier and a reheater are sequentially arranged in the second shell, and a second fan is further arranged between the reheater and the fresh air outlet. The utility model discloses with temperature and humidity independent control air conditioning system's dry end and the integration of new trend degree of depth dehumidification module, the energy-conserving advantage of the two cold sources of make full use of carries out the humidity dehumidification to the new trend, and the operation low power dissipation, the travelling comfort is good.
Description
Technical Field
The utility model relates to an air conditioning technology field particularly, relates to a humiture independent control air conditioning system's end device.
Background
At present, various harmful gases are generated in indoor air due to decoration, furniture, household appliances and the like, and air pollution is serious in outdoor air due to factory, automobile exhaust and the like. Air pollution can cause various diseases, and people put higher demands on how to solve the air pollution and improve indoor air quality.
Present domestic air conditioner can only refrigerate, heat, and the operation is not energy-conserving, and the new trend on the existing market purifies all-in-one and improves the indoor air quality through increasing the fresh air volume, although can partially solve the demand of indoor air quality, still has following problem: 1. when the outdoor humidity is too high, the active carbon for absorbing harmful gas in the air is invalid, and the high-voltage electrostatic dust removal device has potential safety hazards; 2. in winter and summer, cold air is blown out indoors in winter and hot air is blown out indoors in summer due to low heat recovery efficiency, so that the comfort of a human body is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a humiture independent control air conditioning system's end device aims at satisfying the user to the demand of temperature and humidity, when satisfying quick refrigeration and heating, has reduced the humidity too high or low influence to user's travelling comfort excessively to improve user's travelling comfort.
According to the utility model discloses an embodiment provides a humiture independent control air conditioning system's end device, end device includes:
the air return module comprises a first shell, wherein a return air inlet and a return air outlet are formed in the first shell, a first filter and a first heat exchanger are sequentially arranged in the first shell along the direction from the return air inlet to the return air outlet, and a first fan is arranged between the first heat exchanger and the return air outlet;
the fresh air module comprises a second shell, a fresh air inlet and a fresh air outlet are formed in the second shell, a second filter, a second heat exchanger, a dehumidifier and a reheater are sequentially arranged in the second shell along the direction from the fresh air inlet to the fresh air outlet, and a second fan is further arranged between the reheater and the fresh air outlet;
the air return module is communicated with the fresh air module through a first channel and a second channel, and the first channel and the second channel are respectively close to one side of the air return inlet and one side of the air return outlet;
the air return module and the fresh air module are connected with each other and used for supplying heat-exchanging refrigerants to the air return module and the fresh air module;
the temperature and humidity sensors comprise a return air inlet temperature and humidity sensor and a fresh air inlet temperature and humidity sensor which are respectively arranged at the return air inlet and the fresh air inlet and are respectively used for detecting indoor temperature and indoor humidity and outdoor temperature and outdoor humidity; and
and the controller is electrically connected with the devices of the air return module and the fresh air module, the refrigerant supply module and the temperature and humidity sensor and is used for correspondingly adjusting the running states of the air return module, the fresh air module and the refrigerant supply module respectively according to the detection results of the temperature and humidity sensor so as to realize different working conditions.
As a preferred scheme, the refrigerant supply module is a cold and heat source unit, the cold and heat source unit is provided with a refrigerant inlet pipe and a refrigerant outlet pipe, the refrigerant inlet pipe is connected with the inlet end of the first heat exchanger, the refrigerant inlet pipe is connected with the inlet end of the second heat exchanger through a branch pipe, the refrigerant inlet pipe and the branch pipe thereof are respectively provided with a first water valve and a second water valve, the outlet end of the second heat exchanger is connected with the refrigerant outlet pipe, the outlet end of the first heat exchanger is connected with the refrigerant outlet pipe through a pipeline, one ends of the dehumidifier and the reheater are connected through a pipeline provided with a first expansion valve, and the other ends of the dehumidifier and the reheater are.
As a preferred scheme, the refrigerant supply module is a heat pump evaporative refrigeration unit, the heat pump evaporative refrigeration unit comprises a first heat pump evaporative refrigeration unit, a second heat pump evaporative refrigeration unit and a third heat pump evaporative refrigeration unit, the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit respectively comprise a third heat exchanger, a second compressor, a four-way valve and a third fan, two ports of the four-way valve are arranged on a refrigerant pipe connected with the third heat exchanger, the other two ports of the four-way valve are connected with two ends of the second compressor through pipelines, and the third fan is used for gas delivery;
the third heat pump evaporative refrigeration unit comprises a third heat exchanger, a second compressor connected with the third heat exchanger and a third fan used for conveying gas.
Preferably, the inlet and outlet ends of the first heat exchanger and the second heat exchanger are respectively connected with the inlet and outlet ends of the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit through refrigerant pipes, the refrigerant pipes are connected with second expansion valves, and after the dehumidifier and the reheater are connected in series through the first expansion valves, the two ends of the dehumidifier and the reheater are respectively connected with the inlet and outlet ends of the third heat pump evaporative refrigeration unit.
Compared with the prior art, the beneficial effects of the utility model include: the dry end of the temperature and humidity independent control air conditioning system is fused with the fresh air deep dehumidification module, the fresh air is subjected to humidity dehumidification by fully utilizing the energy-saving advantages of double cold sources, and meanwhile, the temperature and humidity independent control air conditioning system has an air conditioning function, a purification function, a fresh air function and a dehumidification function, the functions are operated independently, or the air conditioning function, the purification function, the fresh air function and the dehumidification function are operated randomly in two or more items, and the advantages of the temperature and humidity independent control air conditioning system are perfectly embodied while energy is saved.
Drawings
The disclosure of the present invention is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
fig. 1 is a schematic view of an end device of an independent temperature and humidity control air conditioning system according to an embodiment of the present invention in a first operating condition state;
fig. 2 is a schematic view of an end device of an air conditioning system with independent temperature and humidity control according to an embodiment of the present invention, in a second operating mode;
fig. 3 is a schematic view of an end device of an air conditioning system with independent temperature and humidity control according to an embodiment of the present invention, in a three-state working condition;
fig. 4 is a schematic view of an end device of an air conditioning system with independent temperature and humidity control according to an embodiment of the present invention, in a state of four working conditions;
fig. 5 is a schematic view of a system in which an end device of an independent temperature and humidity control air conditioning system according to another embodiment of the present invention is in a first operating condition state;
fig. 6 is a schematic view of a system in which an end device of an independent temperature and humidity control air conditioning system according to another embodiment of the present invention is in a second operating mode;
fig. 7 is a schematic view of a system in which an end device of an independent temperature and humidity control air conditioning system according to another embodiment of the present invention is in three operating modes;
fig. 8 is a schematic view of a system in which an end device of an independent temperature and humidity control air conditioning system is in four operating modes according to another embodiment of the present invention.
1. A first housing; 2. a second housing; 3. an air return inlet; 4. an air return outlet; 5. a fresh air inlet; 6. a fresh air outlet; 7. a first filter; 8. a first heat exchanger; 9. a first fan; 10. a second filter; 11. a second heat exchanger; 12. a dehumidifier; 13. a reheater; 14. a second fan; 15. a first channel; 16. a second channel; 17. a first compressor; 18. a refrigerant inlet pipe; 19. a refrigerant outlet pipe; 20. a first water valve; 21. a second water valve; 22. a first expansion valve; 23. a second expansion valve; 24. a refrigerant pipe; 25. a third heat exchanger; 26. a second compressor; 27. a four-way valve; 28. and a third fan.
Detailed Description
It is easily understood that, according to the technical solution of the present invention, a plurality of alternative structural modes and implementation modes can be proposed by those skilled in the art without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.
An embodiment according to the present invention is shown in connection with fig. 1. The utility model provides an end equipment of humiture independent control air conditioning system, this end equipment includes return air module and the new trend module that sets up adjacent with the return air module, and the return air module includes first casing 1, is equipped with return air import 3 and return air export 4 on the first casing 1, and first casing 1 is inside to have set gradually first filter 7 and first heat exchanger 8 to return air export 4 directions along return air import 3, still is provided with first fan 9 between first heat exchanger 8 and the return air export 4.
The new trend module includes second casing 2, is equipped with new trend import 5 and new trend export 6 on the second casing 2, and second casing 2 is inside to have set gradually second filter 10, second heat exchanger 11, dehumidifier 12 and reheater 13 along new trend import 5 to new trend export 6 directions, still is provided with second fan 14 between reheater 13 and the new trend export 6. Air doors are respectively arranged on the return air inlet 3, the return air outlet 4, the fresh air inlet 5 and the fresh air outlet 6, and the sizes of the inlet and the outlet can be opened or closed through the air doors, so that the air volume of the inlet and the outlet is controlled.
The return air module is communicated with the fresh air module through a first channel 15 and a second channel 16, the first channel 15 and the second channel 16 are respectively close to one side of the return air inlet 3 and one side of the return air outlet 4, channel switches are arranged on the first channel 15 and the second channel 16, and the first channel 15 and the second channel 16 can be opened or closed through the channel switches.
The inlet end of the first heat exchanger 8 is connected with a refrigerant inlet pipe 18, the refrigerant inlet pipe 18 is connected with the inlet end of the second heat exchanger 11 through a branch pipe, the outlet end of the second heat exchanger 11 is connected with a refrigerant outlet pipe 19, the outlet end of the first heat exchanger 8 is connected with the refrigerant outlet pipe 19 through a branch pipe, the refrigerant inlet pipe 18 and the refrigerant outlet pipe 19 are connected with a cold and heat source, and the cold and heat source is a water chilling unit, an air-cooled heat pump or a boiler and the like. The first water valve 20 and the second water valve 21 are respectively installed on the refrigerant inlet pipe 18 and the branch pipes thereof, and are used for opening or closing the refrigerant inlet pipe 18 and the branch pipes thereof, thereby controlling the flow rate of the refrigerant.
The dehumidifier 12 and the reheater 13 are connected at one end by a pipe provided with a first expansion valve 22 and at the other end by a pipe provided with a first compressor 17. The dehumidifier 12 reduces the temperature of the fresh air by absorbing heat from the fresh air, and when the temperature of the fresh air is reduced to a dew point or below the dew point, water in the fresh air is analyzed, so that the dehumidifier 12 functions to reduce the temperature and dehumidify. The reheater 13 is through discharging the heat in to the new trend, and the new trend absorbs the heat temperature rise that the reheater 13 discharged out, plays reheat effect to the new trend after cooling, dehumidification, improves the travelling comfort of room air.
In this embodiment, the terminal device further includes a controller, and the controller is electrically connected to the air doors disposed on the return air inlet 3, the return air outlet 4, the fresh air inlet 5, and the fresh air outlet 6, the channel switches disposed on the first channel 15 and the second channel 16, the first water valve 20, the second water valve 21, the first fan 9, the second fan 14, and the first compressor 17, respectively. A return air inlet temperature and humidity sensor is arranged at the return air inlet 3 and used for detecting the temperature and the humidity at the return air inlet 3, namely the indoor temperature and the indoor humidity; a fresh air inlet temperature and humidity sensor is arranged at the fresh air inlet 5 and used for detecting the temperature and the humidity at the fresh air inlet 5, namely the outdoor temperature and the outdoor humidity. The controller is respectively and electrically connected with the return air inlet temperature and humidity sensor and the fresh air inlet temperature and humidity sensor.
The controller can adopt SMART 700 model, the temperature and humidity sensor can adopt HT-F-24 model, and it is easy to understand that the controller and the temperature and humidity sensor can also adopt other models, and only the corresponding functions can be realized.
It should be noted that the fan may be a centrifugal fan, an axial flow fan, a volute-free fan, a cross-flow fan, or other variable air volume fans; the filter performs necessary filtration, adsorption and even sterilization on indoor return air, and improves the quality of fresh air, and specific examples of the filter can be an active carbon filter element, a filter screen component, an electrostatic adsorption component, a photocatalyst purification component and the like.
In this embodiment, the utility model also discloses a temperature and humidity independent control air conditioning system's end device's control method, this method includes following step:
the indoor temperature set value, the indoor humidity set value, the outdoor temperature set value and the outdoor humidity set value are preset.
Indoor temperature and indoor humidity are obtained through the return air inlet temperature and humidity sensor, and outdoor temperature and outdoor humidity are obtained through the fresh air inlet temperature and humidity sensor.
The indoor temperature, the indoor humidity, the outdoor temperature and the outdoor humidity are respectively compared with the indoor temperature set value, the indoor humidity set value, the outdoor temperature set value and the outdoor humidity set value which respectively correspond to the indoor temperature, the indoor humidity, the outdoor temperature and the outdoor humidity through the controller.
And according to the comparison result, the running states of the air return module, the fresh air module and the refrigerant supply module are respectively adjusted through the controller so as to realize different working conditions.
And when the indoor temperature is higher than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is higher than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the first working condition.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is higher than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the second working condition.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is lower than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the working condition III.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is lower than the indoor humidity set value, the outdoor temperature is lower than the outdoor temperature set value, and the outdoor humidity is lower than the outdoor humidity set value, operating the fourth working condition.
Specifically, as shown in fig. 1, the first operating condition includes the following steps: starting a cold and heat source through a controller, opening air doors on a return air inlet 3, a return air outlet 4, a fresh air inlet 5 and a fresh air outlet 6, closing channel switches on a first channel 15 and a second channel 16, controlling a first fan 9 and a second fan 14 to operate in a forward direction, controlling a first water valve 20 and a second water valve 21 to be opened, and controlling a first compressor 17 to be started; indoor return air enters from a return air inlet 3, is filtered by a first filter 7 and subjected to cooling treatment by a first heat exchanger 8, and then enters indoors from a return air outlet 4; outdoor fresh air enters from a fresh air inlet 5, is filtered by a second filter 10, is pretreated by a second heat exchanger 11 to be cooled, is dehumidified by a dehumidifier 12, is reheated by a reheater 13, and then enters indoors from a fresh air outlet 6. The condition is particularly suitable for deeply dehumidifying the fresh air and cooling the return air by using the double cooling sources when the fresh air humidity load and the indoor cold and heat load are large.
As shown in fig. 2, the second operating condition includes the following steps: starting a cold and heat source through a controller, opening air doors on an air return inlet 3 and a fresh air outlet 6, closing an air return outlet 4 and closing an air door on a fresh air inlet 5 with a reduced opening degree, opening a channel switch on a first channel 15, closing a channel switch on a second channel 16, controlling a first fan 9 to be closed, controlling a second fan 14 to be opened, controlling a first water valve 20 to be closed, and controlling a second water valve 21 and a first compressor 17 to be opened; the return air or the return air and part of the fresh air are mixed, then filtered by a second filter 10, pretreated by a second heat exchanger 11, dehumidified by a dehumidifier 12, reheated by a reheater 13 and then enter the room through a fresh air outlet 6. The condition is particularly suitable for deeply dehumidifying the fresh air and the return air by using the double cold sources when the indoor wet load is large.
As shown in fig. 3, the third operating condition includes the following steps: the cold and heat source is started through the controller, the air doors on the return air inlet 3 and the return air outlet 4 are opened, the air door on the fresh air inlet 5 is closed or the opening degree is reduced, the air door on the fresh air outlet 6 is closed, the channel switch on the first channel 15 is closed, the channel switch on the second channel 16 is opened, the first fan 9 is controlled to be opened, the second fan 14 is controlled to be closed, and the first water valve 20, the second water valve 21 and the first compressor 17 are controlled to be opened. Indoor return air is filtered by the first filter 7 and is pretreated and heated by the first heat exchanger 8, outdoor fresh air enters from the fresh air inlet 5, is filtered by the second filter 10 and is pretreated and heated by the second heat exchanger 11, is dehumidified by the dehumidifier 12, is reheated by the reheater 13, and then enters indoors through the return air outlet 4 after being mixed with the outdoor fresh air. The condition is particularly suitable for properly reducing the fresh air quantity when the fresh air humidity load is large so as to ensure indoor parameters.
As shown in fig. 4, the fourth operating condition includes the following steps: the cold and heat source is started through the controller, air doors on the return air inlet 3 and the return air outlet 4 are opened, the fresh air outlet 6 is closed, the air door on the fresh air inlet 5 is closed or the opening degree of the fresh air outlet is reduced, a channel switch on the first channel 15 is opened, a channel switch on the second channel 16 is closed, the first fan 9 is controlled to be opened, the second fan 14 is controlled to be closed, the first water valve 20 is controlled to be opened, and the second water valve 21 and the first compressor 17 are controlled to be closed. The return air or the return air and part of fresh air are mixed, filtered by the first filter 7, pretreated by the first heat exchanger 8, heated and then enter the room through the return air outlet 4. The condition is particularly suitable for adjusting the indoor parameters by using outdoor fresh air when the outdoor parameters meet the indoor air-conditioning conditions in the transition season, and the energy consumption is reduced.
Another embodiment according to the invention is shown in connection with fig. 5. The utility model provides an end equipment of humiture independent control air conditioning system, this end equipment includes return air module and the new trend module that sets up adjacent with the return air module, and the return air module includes first casing 1, is equipped with return air import 3 and return air export 4 on the first casing 1, and first casing 1 is inside to have set gradually first filter 7 and first heat exchanger 8 to return air export 4 directions along return air import 3, still is provided with first fan 9 between first heat exchanger 8 and the return air export 4.
The new trend module includes second casing 2, is equipped with new trend import 5 and new trend export 6 on the second casing 2, and second casing 2 is inside to have set gradually second filter 10, second heat exchanger 11, dehumidifier 12 and reheater 13 along new trend import 5 to new trend export 6 directions, still is provided with second fan 14 between reheater 13 and the new trend export 6. Air doors are respectively arranged on the return air inlet 3, the return air outlet 4, the fresh air inlet 5 and the fresh air outlet 6, and the sizes of the inlet and the outlet can be opened or closed through the air doors, so that the air volume of the inlet and the outlet is controlled.
The return air module is communicated with the fresh air module through a first channel 15 and a second channel 16, the first channel 15 and the second channel 16 are respectively close to one side of the return air inlet 3 and one side of the return air outlet 4, channel switches are arranged on the first channel 15 and the second channel 16, and the first channel 15 and the second channel 16 can be opened or closed through the channel switches.
In this embodiment, the terminal device further includes heat pump evaporative type refrigeration units, the number of the heat pump evaporative type refrigeration units 25 is preferably 3, and the heat pump evaporative type refrigeration units are respectively defined as a first heat pump evaporative type refrigeration unit, a second heat pump evaporative type refrigeration unit and a third heat pump evaporative type refrigeration unit, the first heat pump evaporative type refrigeration unit and the second heat pump evaporative type refrigeration unit have the same structure, and each of the first heat pump evaporative type refrigeration unit and the second heat pump evaporative type refrigeration unit includes a third heat exchanger 25, a second compressor 26, a four-way valve 27 and a third fan 28, two outlets of the four-way valve 27 are installed on a refrigerant pipe 24, one end of which is connected with the third heat exchanger 25, and the other two outlets of the four-way. The flow direction of the refrigerant can be switched by the four-way valve 27, so that the switching of the heat exchanger under the working conditions of refrigeration and heating is realized. The third heat pump evaporative refrigeration unit comprises a third heat exchanger 25 and a second compressor 26 connected to the third heat exchanger 25, and a third fan 28 for gas delivery.
The inlet and outlet ends of the first heat exchanger 8 and the second heat exchanger 11 are respectively connected with the inlet and outlet ends of the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit through a refrigerant pipe 24, the refrigerant pipe 24 is connected with a second expansion valve 23, and after the dehumidifier 12 and the reheater 13 are connected in series through a first expansion valve 22, the two ends of the dehumidifier are respectively connected with the inlet and outlet ends of the third heat pump evaporative refrigeration unit.
In this embodiment, the terminal device further includes a controller, and the controller is electrically connected to the air doors disposed on the return air inlet 3, the return air outlet 4, the fresh air inlet 5, and the fresh air outlet 6, the channel switches disposed on the first channel 15 and the second channel 16, the first fan 9, the second fan 14, the third fan 28, the second compressor 26, and the four-way valve 27, respectively. A return air inlet temperature and humidity sensor is arranged at the return air inlet 3 and used for detecting the temperature and the humidity at the return air inlet 3, namely the indoor temperature and the indoor humidity; a fresh air inlet temperature and humidity sensor is arranged at the fresh air inlet 5 and used for detecting the temperature and the humidity at the fresh air inlet 5, namely the outdoor temperature and the outdoor humidity. The controller is respectively connected with the return air inlet temperature and humidity sensor and the fresh air inlet temperature and humidity sensor in an electric mode.
In this embodiment, the utility model also discloses a temperature and humidity independent control air conditioning system's end device's control method, this method includes following step:
presetting an indoor temperature set value, an indoor humidity set value, an outdoor temperature set value and an outdoor humidity set value;
acquiring indoor temperature and indoor humidity through a return air inlet temperature and humidity sensor, and acquiring outdoor temperature and outdoor humidity through a fresh air inlet temperature and humidity sensor;
comparing the indoor temperature, the indoor humidity, the outdoor temperature and the outdoor humidity with an indoor temperature set value, an indoor humidity set value, an outdoor temperature set value and an outdoor humidity set value which respectively correspond to the indoor temperature, the indoor humidity, the outdoor temperature and the outdoor humidity through a controller;
and according to the comparison result, the running states of the air return module, the fresh air module and the refrigerant supply module are respectively adjusted through a controller, so that the terminal device runs under different working conditions.
And when the indoor temperature is higher than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is higher than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the first working condition.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is higher than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the second working condition.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is higher than the indoor humidity set value, the outdoor temperature is lower than the outdoor temperature set value, and the outdoor humidity is higher than the outdoor humidity set value, operating the working condition III.
And when the indoor temperature is lower than the indoor temperature set value, the indoor humidity is lower than the indoor humidity set value, the outdoor temperature is lower than the outdoor temperature set value, and the outdoor humidity is lower than the outdoor humidity set value, operating the fourth working condition.
Specifically, as shown in fig. 5, the first operating condition includes the following steps: the air doors on the return air inlet 3, the return air outlet 4, the fresh air inlet 5 and the fresh air outlet 6 are opened through the controller, the channel switches on the first channel 15 and the second channel 16 are closed, the first fan 9 and the second fan 14 are controlled to operate in the forward direction, the four-way valve 27 and the second compressor 26 on the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit are respectively started, the respective third fan 28 is opened, the second compressor 26 and the third fan 28 on the third heat pump evaporative refrigeration unit are started, and the first heat pump evaporative refrigeration unit, the second heat pump evaporative refrigeration unit and the third heat pump evaporative refrigeration unit are enabled to be in an operating state.
Indoor return air enters from a return air inlet 3, is filtered by a first filter 7 and subjected to cooling treatment by a first heat exchanger 8, and then enters indoors from a return air outlet 4; outdoor fresh air enters from a fresh air inlet 5, is filtered by a second filter 10, is cooled by a second heat exchanger 11, is dehumidified by a dehumidifier 12, is reheated by a reheater 13, and enters indoors from a fresh air outlet 6. The condition is particularly suitable for deeply dehumidifying the fresh air and cooling the return air by using the double cooling sources when the fresh air humidity load and the indoor cooling load are large.
As shown in fig. 6, the second operating condition includes the following steps: the air doors on the return air inlet 3 and the fresh air outlet 6 are opened through the controller, the air doors on the return air outlet 4 and the fresh air inlet 5 with the opening degree reduced or reduced are closed, the channel switch on the first channel 15 is opened, the channel switch on the second channel 16 is closed, the first fan 9 is controlled to be closed, the second fan 14 is controlled to be opened, the four-way valve 27, the second compressor 26 and the third fan 28 on the first heat pump evaporative refrigeration unit are closed, the four-way valve 27, the second compressor 26 and the third fan 28 on the second heat pump evaporative refrigeration unit are started, the second compressor 26 and the third fan 28 on the third heat pump evaporative refrigeration unit are started, and the second heat pump evaporative refrigeration unit and the third heat pump evaporative refrigeration unit are in an operation state.
The return air or the return air and part of the fresh air are mixed, then filtered by a second filter 10, pretreated by a second heat exchanger 11, dehumidified by a dehumidifier 12, reheated by a reheater 13 and then enter the room through a fresh air outlet 6. The condition is particularly suitable for deeply dehumidifying the fresh air and the return air by using the double cold sources when the indoor wet load is large.
As shown in fig. 7, the third operating condition includes the following steps: the air doors on the return air inlet 3 and the return air outlet 4 are opened through the controller, the air door on the fresh air inlet 5 is closed or the opening degree of the air door is reduced, the air door on the fresh air outlet 6 is closed, the channel switch on the first channel 15 is closed, the channel switch on the second channel 16 is opened, the first fan 9 is controlled to be opened, the second fan 14 is controlled to be closed, the four-way valve 27 and the second compressor 26 on the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit are respectively started, the third fan 28 is opened, the second compressor 26 and the third fan 28 on the third heat pump evaporative refrigeration unit are started, and the first heat pump evaporative refrigeration unit, the second heat pump evaporative refrigeration unit and the third heat pump evaporative refrigeration unit are in the running state.
Indoor return air is filtered by the first filter 7 and is pretreated and heated by the first heat exchanger 8, outdoor fresh air enters from the fresh air inlet 5, is filtered by the second filter 10 and is pretreated and heated by the second heat exchanger 11, is dehumidified by the dehumidifier 12, is reheated by the reheater 13, and then enters indoors through the return air outlet 4 after being mixed with the outdoor fresh air. The condition is particularly suitable for properly reducing the fresh air quantity when the fresh air humidity load is large so as to ensure indoor parameters.
As shown in fig. 8, the fourth operating condition includes the following steps: the air doors on the return air inlet 3 and the return air outlet 4 are opened through the controller, the air door on the fresh air outlet 6 and the fresh air inlet 5 with the opening degree reduced or reduced is closed, the channel switch on the first channel 15 is opened, the channel switch on the second channel 16 is closed, the four-way valve 27, the second compressor 26 and the third fan 28 on the first heat pump evaporative refrigeration unit are opened, and the first heat pump evaporative refrigeration unit is in an operating state; and turning off the four-way valve 27, the second compressor 26 and the third fan 28 on the second heat pump evaporative refrigeration unit, and turning off the second compressor 26 and the third fan 28 on the third heat pump evaporative refrigeration unit.
The return air or the return air and part of fresh air are mixed, filtered by the first filter 7, pretreated by the first heat exchanger 8, heated and then enter the room through the return air outlet 4. The condition is particularly suitable for adjusting the indoor parameters by using outdoor fresh air when the outdoor parameters meet the indoor air-conditioning conditions in the transition season, and the energy consumption is reduced.
It is conceivable that the direction of the four-way valve is changed to change the flow direction of the refrigerant, and further change the operating state of each heat exchanger, that is, the heat exchangers can be switched between cooling and heating.
The technical scope of the present invention is not limited to the content in the above description, and those skilled in the art can make various modifications and alterations to the above embodiments without departing from the technical spirit of the present invention, and these modifications and alterations should fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides an end device of humiture independent control air conditioning system which characterized in that, end device includes:
the air return module comprises a first shell, wherein a return air inlet and a return air outlet are formed in the first shell, a first filter and a first heat exchanger are sequentially arranged in the first shell along the direction from the return air inlet to the return air outlet, and a first fan is arranged between the first heat exchanger and the return air outlet;
the fresh air module comprises a second shell, a fresh air inlet and a fresh air outlet are formed in the second shell, a second filter, a second heat exchanger, a dehumidifier and a reheater are sequentially arranged in the second shell along the direction from the fresh air inlet to the fresh air outlet, and a second fan is further arranged between the reheater and the fresh air outlet;
the air return module is communicated with the fresh air module through a first channel and a second channel, and the first channel and the second channel are respectively close to one side of the air return inlet and one side of the air return outlet;
the air return module and the fresh air module are connected with each other and used for supplying heat-exchanging refrigerants to the air return module and the fresh air module;
the temperature and humidity sensors comprise a return air inlet temperature and humidity sensor and a fresh air inlet temperature and humidity sensor which are respectively arranged at the return air inlet and the fresh air inlet and are respectively used for detecting indoor temperature and indoor humidity and outdoor temperature and outdoor humidity; and
and the controller is electrically connected with the devices of the air return module and the fresh air module, the refrigerant supply module and the temperature and humidity sensor and is used for correspondingly adjusting the running states of the air return module, the fresh air module and the refrigerant supply module respectively according to the detection results of the temperature and humidity sensor so as to realize different working conditions.
2. The end device of the air conditioning system with independent temperature and humidity control as claimed in claim 1, wherein the refrigerant supply module is a cold and heat source unit, the cold and heat source unit has a refrigerant inlet pipe and a refrigerant outlet pipe, the refrigerant inlet pipe is connected to the inlet end of the first heat exchanger, the refrigerant inlet pipe is connected to the inlet end of the second heat exchanger through a branch pipe, the refrigerant inlet pipe and the branch pipe are respectively provided with a first water valve and a second water valve, the outlet end of the second heat exchanger is connected to the refrigerant outlet pipe, the outlet end of the first heat exchanger is connected to the refrigerant outlet pipe through a pipeline, one end of the dehumidifier and one end of the reheater are connected through a pipeline provided with a first expansion valve, and the other end of the dehumidifier and the reheater.
3. The end device of the air conditioning system with independent temperature and humidity control according to claim 1, wherein the refrigerant supply module is a heat pump evaporative type refrigeration unit, the heat pump evaporative type refrigeration unit comprises a first heat pump evaporative type refrigeration unit, a second heat pump evaporative type refrigeration unit and a third heat pump evaporative type refrigeration unit, the first heat pump evaporative type refrigeration unit and the second heat pump evaporative type refrigeration unit respectively comprise a third heat exchanger, a second compressor, a four-way valve and a third fan, two ports of the four-way valve are arranged on a refrigerant pipe connected with the third heat exchanger, the other two ports of the four-way valve are connected with two ends of the second compressor through pipelines, and the third fan is used for gas delivery;
the third heat pump evaporative refrigeration unit comprises a third heat exchanger, a second compressor connected with the third heat exchanger and a third fan used for conveying gas.
4. The end device of the air conditioning system with independent temperature and humidity control as claimed in claim 3, wherein the inlet and outlet ends of the first heat exchanger and the second heat exchanger are respectively connected with the inlet and outlet ends of the first heat pump evaporative refrigeration unit and the second heat pump evaporative refrigeration unit through refrigerant pipes, the refrigerant pipes are connected with second expansion valves, and after the dehumidifier and the reheater are connected in series through the first expansion valves, the two ends of the dehumidifier and the reheater are respectively connected with the inlet and outlet ends of the third heat pump evaporative refrigeration unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020553426.0U CN212204815U (en) | 2020-04-15 | 2020-04-15 | Terminal device of temperature and humidity independent control air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020553426.0U CN212204815U (en) | 2020-04-15 | 2020-04-15 | Terminal device of temperature and humidity independent control air conditioning system |
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| CN212204815U true CN212204815U (en) | 2020-12-22 |
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