Indoor integral heat exchange fresh air conditioning unit equipment and using method

Abstract

The invention discloses indoor integral type heat exchange fresh air conditioning unit equipment and a using method, and the indoor integral type heat exchange fresh air conditioning unit equipment comprises a heat exchange unit which is arranged in a containing space, an indoor air supply opening, an indoor air return opening and an indoor air exhaust opening which are formed in the heat exchange unit communicate with all the subspaces through partition walls, an outdoor fresh air inlet and an outdoor air exhaust outlet which are formed in the heat exchange unit communicate with the outdoor environment through a main wall, and an evaporation unit, a condensing unit, a compressor unit and a fresh air system are arranged in the heat exchange unit. The compressor unit is used for being connected with the evaporation unit and the condensation unit to form a heat pump system, and a heat exchange core is arranged in the fresh air system. The control system is arranged on the heat exchange unit and used for being electrically connected with the evaporation unit, the condensing unit, the compressor unit and the fresh air system. The control system is configured to include a plurality of operating modes. The equipment can meet the effects of system integrated control and intelligent adjustment.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of air conditioning technology. More particularly, the present application relates to an integrated heat exchange fresh air air conditioning unit device for indoor use and a method of use. BACKGROUND

[0002] With the acceleration of urbanization and the continuous improvement of people's living standards, the requirements for indoor air quality of civil buildings are becoming more and more strict. In order to meet the comfort needs of living, office and other scenes, heating, refrigeration and ventilation have become the core elements of building environment regulation. However, the traditional natural ventilation method is limited by outdoor environmental factors (such as air pollution, noise, etc.), and it is difficult to meet the high requirements of modern buildings on airtightness and comfort. Therefore, air conditioning systems and fresh air systems have gradually become the main means of indoor air conditioning of civil buildings. Both of them are responsible for temperature regulation and air quality improvement, and together guarantee the livability of indoor environment.

[0003] In the prior art, the air conditioning system is mostly of a split structure, composed of an indoor unit (wall-mounted or stand-alone) and an outdoor unit. The outdoor unit is usually hung on the building facade or a dedicated machine site, while the indoor unit adjusts the indoor temperature and humidity through the air supply port. However, during the installation process of the air conditioning system, complex processes such as vacuumizing, pressure maintaining and refrigerant charging are required, and the installation height depends on professional personnel. In addition, the outdoor unit is exposed to the facade, which inevitably affects the appearance of the building. The fresh air unit is usually installed by hanging, placed under the indoor ceiling, connected with the outdoor fresh air inlet through the pipeline to realize the exchange of indoor and outdoor air. However, the hanging of the fresh air unit occupies the floor height, reduces the utilization rate of indoor space, and the pipeline layout is complex, increasing the construction difficulty and cost. More importantly, the air conditioning system and the fresh air system are independently designed, lacking effective cooperative control mechanism, resulting in poor compatibility. For example, introducing fresh air during air conditioning refrigeration may cause cold and heat load conflict, thereby increasing energy consumption; at the same time, the operating parameters of the two cannot be optimized in linkage, resulting in fragmented user experience. SUMMARY

[0004] In order to solve one or more technical problems as mentioned above, the present application provides an integrated heat exchange fresh air air conditioning unit device for indoor use and a method of use, which can integrate air conditioning system and fresh air system, and through parameterization linkage of the air conditioning system and the fresh air system, can meet the functions of indoor winter heating, summer refrigeration, outdoor fresh air filtering, refrigeration or heating air supply, at the same time, can also reduce the installation of outdoor unit of air conditioning system, reduce the number of components, and improve the space utilization rate.

[0005] According to a first aspect of the present application, there is provided an integrated heat exchange fresh air air conditioning unit device for indoor use. The indoor space comprises a main wall adjacent to an outdoor environment and a partition wall for forming a plurality of sub-spaces, and a placing space is provided in the main wall or on the partition wall. The integrated heat exchange fresh air air conditioning unit device comprises: a heat exchange unit arranged in the placing space, the heat exchange unit being provided with an indoor air supply port, an indoor return air port, an indoor exhaust port, an outdoor fresh air inlet and an outdoor exhaust outlet, the indoor air supply port, the indoor return air port and the indoor exhaust port being connected to the sub-spaces through the partition wall, the outdoor fresh air inlet and the outdoor exhaust outlet being connected to the outdoor environment through the main wall, the heat exchange unit being provided with an evaporation unit, a condensation unit, a compressor unit and a fresh air system, the compressor unit being connected to the evaporation unit and the condensation unit to form a heat pump system, and the fresh air system being provided with a heat exchange core; and a control system arranged on the heat exchange unit and electrically connected to the evaporation unit, the condensation unit, the compressor unit and the fresh air system, the control system being provided with a plurality of operating modes, wherein the operating modes include: air entering through the indoor return air port is heated or cooled by the heat pump system and is discharged to the indoor environment through the indoor air supply port; air entering through the outdoor fresh air inlet is heated or cooled by the fresh air system and the evaporation unit and is discharged to the indoor environment through the indoor air supply port; and air entering through the indoor exhaust port is exchanged with air entering through the outdoor fresh air inlet by the fresh air system, and is exchanged by the condensation unit and is discharged to the outdoor environment through the outdoor exhaust outlet.

[0006] In some embodiments, the control system comprises a control module arranged on the heat exchange unit, the control module being configured to adjust the start-stop state or the frequency state of the operation of the evaporation unit, the condensation unit, the compressor unit and the fresh air system according to different operating modes.

[0007] In some embodiments, the device further comprises an auxiliary heating device arranged in the indoor air supply port, the auxiliary heating device being electrically connected to the control system.

[0008] In some embodiments, the heat exchange core comprises: a first air inlet side connected to the indoor exhaust port; a second air inlet side connected to the outdoor fresh air inlet; a first air outlet side connected to the second air inlet side; and a second air outlet side connected to the first air inlet side; the fresh air system further comprises a fresh air supply fan and a fresh air exhaust fan, the fresh air supply fan being arranged on the first air outlet side and being connected to the evaporation unit, and the fresh air exhaust fan being arranged on the second air outlet side and being connected to the condensation unit.

[0009] In some embodiments, the first air inlet side of the heat exchange core is provided with an exhaust air filter screen, and the second air inlet side of the heat exchange core is provided with a fresh air filter screen.

[0010] In some embodiments, the evaporating unit comprises: an evaporator arranged at the top inside the heat exchanging unit and connected with the indoor air outlet; and an evaporating fan arranged below the evaporator and used to connect the indoor air inlet and the evaporator.

[0011] In some embodiments, the condensing unit comprises: a condensing fan arranged at the bottom inside the heat exchanging unit and connected with the outdoor air outlet; and a condenser arranged above the condensing fan and used to connect the fresh air system and the condensing fan.

[0012] In some embodiments, the compressor unit comprises: a compressor arranged at the upper part of the condenser, a four-way reversing valve arranged on the exhaust pipeline of the compressor; and an electronic expansion valve arranged at one side of the compressor. The compressor, the condenser, the electronic expansion valve, the evaporator and the compressor are connected to form a loop.

[0013] In some embodiments, the indoor air inlet, the outdoor fresh air inlet and the outdoor air outlet are arranged in multiple.

[0014] According to the second aspect of the present application, a method for using the integrated heat exchanging fresh air air conditioning unit device for indoor is provided. The steps of the method comprise: setting the device to one of the cooling mode, the heating mode, the air exchange mode, the humidifying mode and the dehumidifying mode; controlling the system to start the heat pump system, and heat exchanging the air entering from the indoor air inlet through the evaporating unit, the condensing unit and the compressor unit, and then discharging the air to the external environment through the indoor air outlet; controlling the system to start the fresh air system, and heat exchanging the air entering from the outdoor fresh air inlet through the heat exchanging core and the evaporating unit, and then discharging the air to the external environment through the indoor air outlet; the indoor air exchanges heat with the air entering from the outdoor fresh air inlet through the heat exchanging core and the condensing unit, and then discharges the air to the outdoor environment through the outdoor air outlet; and the control system adjusts the start-stop state or the frequency state of the evaporating unit, the condensing unit, the compressor unit and the fresh air system according to different operation modes.

[0015] By means of the integral heat exchange fresh air air conditioning unit device provided above, the air conditioning system and the fresh air system are combined together, so that it has the following advantages: 1) The heat pump system and the fresh air system are integrated together, and the control system can integrate the functions of the air conditioning system and the fresh air system according to different operation mode requirements, and through parameterization linkage of the air conditioning system and the fresh air system. 2) The whole is installed indoors, without the need for an outdoor unit, so that the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application saves installation space, reduces installation construction difficulty, and has good decoration effect. The installation process does not require professional complex operations such as vacuumizing, pressure maintaining, and refrigerant charging, and the reduced number of components further reduces installation construction difficulty, makes construction simple, and improves space utilization. 3) It can meet the air conditioning functions of indoor winter heating and summer cooling, outdoor fresh air filtering, cooling or heating air supply functions, indoor exhaust air and fresh air heat exchange heat recovery functions, system control integration, intelligent adjustment, and energy-saving operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects, features and advantages of the present application exemplary embodiments will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein like reference numerals refer to like elements or parts throughout. In the drawings:

[0017] Figure 1 The application scenario diagram of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application;

[0018] Figure 2 The structure front view schematic diagram of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application, wherein the internal structure is shown;

[0019] Figure 3 The structure rear view schematic diagram of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application, wherein the internal structure is shown;

[0020] Figure 4 The air flow schematic diagram of the refrigeration mode and the heating mode of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application;

[0021] Figure 5 The air flow schematic diagram of the fresh air heat recovery mode of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application;

[0022] Figure 6 The air flow schematic diagram of the refrigeration mode or the heating mode + the fresh air heat recovery mode of the integral heat exchange fresh air air conditioning unit device of the embodiment of the present application;

[0023] Figure 7A flow chart of a method for using the integrated heat exchange fresh air air conditioning unit device. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present disclosure.

[0025] According to a first aspect of the present disclosure, an integrated heat exchange fresh air air conditioning unit device 100 for indoor use is provided. Figure 1 An application scenario of the integrated heat exchange fresh air air conditioning unit device 100 according to an embodiment of the present disclosure is shown. The indoor environment 200 can include a main wall 201 adjacent to an outdoor environment and a partition wall 203 for forming a plurality of subspaces 202, and a placement space 204 is provided in the main wall 201 or on the partition wall 203.

[0026] In combination Figures 1 to 3 As shown, the integrated heat exchange fresh air air conditioning unit device 100 according to an embodiment of the present disclosure includes: a heat exchange unit 10 provided in the placement space 204, the heat exchange unit 10 being provided with an indoor air supply port 11, an indoor return air port 12, an indoor exhaust port 13, an outdoor fresh air inlet 14, and an outdoor exhaust outlet 15, the indoor air supply port 11, the indoor return air port 12, and the indoor exhaust port 13 being communicated with each of the subspaces 202 through the partition wall 203, the outdoor fresh air inlet 14 and the outdoor exhaust outlet 15 being communicated with the outdoor environment through the main wall, the heat exchange unit 10 being provided with an evaporation unit 21, a condensation unit 22, a compressor unit 23, and a fresh air system 30, the compressor unit 23 being used to connect the evaporation unit 21 and the condensation unit 22 to form a heat pump system 20, and the fresh air system 30 being provided with a heat exchange core 31; and a control system 40 provided on the heat exchange unit 10 and electrically connected with the evaporation unit 21, the condensation unit 22, the compressor unit 23, and the fresh air system 30, the control system 40 being provided with a plurality of operating modes for adjusting the operating states of the evaporation unit 21, the condensation unit 22, the compressor unit 23, and the fresh air system 40, wherein the operating modes include: air entering through the indoor return air port 12 is heated or cooled by the heat pump system 20 and discharged to the indoor environment through the indoor air supply port 11; air entering through the outdoor fresh air inlet 14 is heated or cooled by the fresh air system 40 and the evaporation unit 21 and discharged to the indoor environment through the indoor air supply port 11; air entering through the indoor exhaust port 13 is heat-exchanged with air entering through the outdoor fresh air inlet 14 by the fresh air system 40, and after heat-exchanged by the condensation unit 22, the air is discharged to the outdoor environment through the outdoor exhaust outlet 15.

[0027] Please refer to Figure 1 In the present application, the integrated heat exchange fresh air conditioning unit device 100 can be installed in the main wall 201 or the partition wall 203 in the room. The main wall 201 or the partition wall 203 can be provided with a placing space 204 in the form of a closable door structure (not shown in the figure). The main wall 201 and the partition wall 203 are provided with a plurality of communication holes for the communication of the indoor air supply port 11, the indoor return air port 12, the indoor exhaust port 13, the outdoor fresh air inlet 14, and the outdoor exhaust outlet 15. The communication holes can be provided with air ducts. Each sub-space 202 in the room can form a return air port through the communication hole, and the return air port is connected to the indoor return air port 12 of the integrated heat exchange fresh air conditioning unit device 100 through the air duct. The indoor air supply port 11 of the integrated heat exchange fresh air conditioning unit device 100 can be connected to each sub-space 202 through the communication hole to supply air to each sub-space 202. In addition, the interior of the room can also include areas such as bathrooms or kitchens, which can also form exhaust ports through the communication holes, connect to the indoor exhaust port 13 of the integrated heat exchange fresh air conditioning unit device 100 through the exhaust air duct, and be discharged to the outside environment through the outdoor exhaust outlet 15.

[0028] In the specific use of the integrated heat exchange fresh air conditioning unit device 100 according to the embodiment of the present application, the device is started by the control system 40. The working principle of the heat pump system 20 is as follows: The compressor set 23 compresses the refrigerant into high-temperature and high-pressure refrigerant vapor. The refrigerant vapor enters the condensing set 22 to exchange heat with the air passing through the condensing set 22, and then becomes low-temperature and high-pressure refrigerant liquid, while the air passing through the condensing set 22 is heated. The low-temperature and low-pressure refrigerant liquid enters the evaporating set 21, exchanges heat with the air passing through the evaporating set 21 due to the low pressure of the refrigerant, and the refrigerant liquid absorbs the heat in the air to flash into gas, in the process, the air passing through the evaporating set 21 is cooled and cooled. Based on this, in combination with Figure 2 、 Figures 4 to 6 It is shown that the integrated heat exchange fresh air conditioning unit device 100 according to the embodiment of the present application includes:

[0029] 1) Refrigeration mode. As shown in Figure 2 and Figure 4 , when the refrigeration mode is running, the heat pump system 20 is started, the air in the room is cooled by heat exchange through the indoor return air port 12 and the evaporating set 21, and then sent into the room through the indoor air supply port 11, so as to meet the demand of indoor refrigeration. At this time, the fresh air system 30 can be set to be closed.

[0030] 2) Heating mode. As shown in Figure 2 and Figure 4As shown, in heating mode, the evaporating unit 21 and the condensing unit 22 in the heat pump system 20 are reversed (usually using a four-way reversing valve to reverse), so that the original evaporating unit 21 forms a condensing unit, and the original condensing unit 22 forms an evaporating unit. When the heat pump system 20 is started, the indoor air passes through the condensing unit (the original evaporating unit 21) through the indoor return air outlet 12, exchanges heat to warm up, and then is sent into the indoor through the indoor air supply outlet 11, thereby meeting the indoor heating demand. At this time, the fresh air system 30 can be set to be closed.

[0031] 3) Fresh air heat recovery mode. As shown in Figure 2 and Figure 5 In the present application, the heat exchange core 31 can be arranged in the upper part of the heat exchange unit 10. When the fresh air system 30 is set to be opened, the indoor air enters the heat exchange core 31 through the indoor exhaust air outlet 13, and the outdoor fresh air enters the heat exchange core 31 through the outdoor fresh air inlet 14. The indoor air and the outdoor fresh air exchange heat through the heat exchange core 31, and then the heat or cold carried by the indoor air is transferred to the fresh air. The energy is recovered by the fresh air, and then is sent into the indoor through the evaporating unit 21 and the indoor air supply outlet 11. The indoor air is discharged to the outdoor through the condensing unit 22 and the outdoor exhaust air outlet 15. At this time, the heat pump system 20 can be set to be closed.

[0032] 4) When the heat pump system 20 and the fresh air system 30 are opened at the same time, the combination of 1) and 3) is the cooling mode + fresh air heat recovery mode. As shown in Figure 2 and Figure 6 The outdoor fresh air enters the heat exchange core 31 in the heat exchange unit 10 through the outdoor fresh air inlet 14, and is cooled by the evaporating unit 21 under the secondary pressure of the evaporating unit 21, and then is sent into the indoor through the indoor air supply outlet 11, thereby assisting 1) to complete the temperature adjustment of the outdoor fresh air entering the indoor. The indoor air enters the heat exchange core 31 through the indoor exhaust air outlet 13, and is cooled by the condensing unit 22, and then is discharged to the outdoor through the outdoor exhaust air outlet 15. This mode can also be a humidification mode.

[0033] 5) When the heat pump system 20 and the fresh air system 30 are opened at the same time, the combination of 2) and 3) is the heating mode + fresh air heat recovery mode. As shown in Figure 2 and Figure 6As shown, the outdoor fresh air enters the heat exchange core 31 in the heat exchange unit 10 through the outdoor fresh air inlet 14, and is sent into the indoor through the condensing unit (original evaporating unit 21) under the secondary pressurization of the condensing unit (original evaporating unit 21), and the temperature regulation of the outdoor fresh air entering the indoor is completed. The indoor air passes through the evaporating unit (original condensing unit 22), the refrigerant in the evaporating unit (original condensing unit 22) exchanges heat with the indoor hot air, absorbs the heat of the indoor air and evaporates, in the process, the indoor air is cooled and discharged to the outdoor through the outdoor exhaust outlet 15. This mode can also be a dehumidification mode.

[0034] Through the above setting, the heat pump system 20 and the fresh air system 30 are combined in the integrated heat exchange fresh air air conditioning unit device 100 according to the embodiment of the application, the air conditioning system and the fresh air system 30 are combined together, so that it has the following advantages:

[0035] 1) The heat pump system 20 and the fresh air system 30 are integrated together, which can be parameterized linkage according to different operation modes.

[0036] 2) The whole is installed in the indoor, without the outdoor unit, so that the integrated heat exchange fresh air air conditioning unit device 100 of the embodiment of the application saves the installation space, reduces the installation construction difficulty, and has good decoration effect. The installation process does not need professional complex operations such as vacuumizing, pressure maintaining and refrigerant charging, and the external unit components are reduced, which further reduces the installation construction difficulty, is simple to construct, improves the space utilization rate.

[0037] 3) It can meet the air conditioning functions of indoor winter heating and summer cooling, outdoor fresh air filtering, cooling or heating air supply, indoor exhaust and fresh air heat exchange and heat recovery, system control integration, intelligent regulation and energy saving operation.

[0038] 4) In the cooling mode + fresh air heat recovery mode, the energy of the indoor air after passing through the heat exchange core 31 is recovered, and the heat exchange efficiency of the condensing unit 22 can be improved after the indoor air passes through the condensing unit 22 because the indoor air is lower than the outdoor temperature. For the refrigeration system, it realizes secondary energy recovery and has significant energy saving effect.

[0039] It should be noted that in the present application, the heat exchange core 31 utilizes the heat transfer principle, through special material and structure design, the indoor exhaust air and the outdoor entering air exchange heat when passing through the core, but the air itself is not mixed, so as to realize the energy recovery and utilization. In the present application, the heat exchange unit 10 can adopt a double-layer steel plate foaming heat preservation structure, which has good heat preservation effect and high strength.

[0040] Please refer to Figure 2In some embodiments, the control system 40 can include a control module 41 arranged on the heat exchanger group 10, which is arranged to adjust the start-stop state or frequency state of the operation of the evaporating group 21, the condensing group 22, the compressor group 23, and the fresh air system 40 according to different operation mode requirements.

[0041] Through the control method of the control module 41, the integrated heat exchange fresh air air conditioning group device 100 according to the embodiments of the present application integrates the heat pump system 20 and the fresh air system 30 together, automatically adjusts the operation frequency of the compressor group 23, automatically adjusts the operation frequency of the condensing group 22 and the evaporating group 21, and automatically adjusts the operation frequency of the fresh air system 30 according to the change of the outdoor environment temperature and the change of the indoor demand, so as to achieve good operation energy saving effect. At the same time, the start-stop state or frequency state of the operation of each component can be automatically adjusted according to different operation mode requirements, further improving the intelligent coordination ability.

[0042] Please continue to refer to Figure 2 In some embodiments, an auxiliary heating device 50 is further included, which is arranged in the indoor air supply port 11 and is electrically connected with the control system 40.

[0043] Through the above arrangement, in the heating mode, the evaporating group 21 and the condensing group 22 in the heat pump system 20 are reversed (usually reversed by using a four-way reversing valve), so that the original evaporating group 21 forms a condensing group, and the original condensing group 22 forms an evaporating group. When the outdoor temperature is low in winter, the air heating capacity of the condensing group (the original evaporating group 21) is limited, and the auxiliary heating device 50 installed above the condensing group (the original evaporating group 21) is turned on to further heat the air, so as to meet the hot air supply requirement.

[0044] Please continue to refer to Figure 2 In some embodiments, the fresh air system 30 further includes a fresh air supply fan 32 and a fresh air exhaust fan 33, which are arranged on one side of the heat exchange core 31. The heat exchange core 31 includes: a first air inlet side in communication with the indoor air exhaust port 13; a second air inlet side in communication with the outdoor fresh air inlet 14; a first air outlet side in communication with the fresh air supply fan 32; and a second air outlet side in communication with the fresh air exhaust fan 33. The fresh air supply fan 32 is in communication with the evaporating group 21, and the fresh air exhaust fan 33 is in communication with the condensing group 22.

[0045] In some embodiments, the heat exchange core 31 can include a first air inlet side in communication with the indoor air outlet 13, a second air inlet side in communication with the outdoor fresh air inlet 14, a first air outlet side in communication with the second air inlet side, and a second air outlet side in communication with the first air inlet side. The fresh air system 30 can further include a fresh air supply fan 32 and a fresh air exhaust fan 33. The fresh air supply fan 32 is arranged at the first air outlet side and in communication with the evaporative unit 21. The fresh air exhaust fan 33 is arranged at the second air outlet side and in communication with the condensing unit 23.

[0046] In the present application, the fresh air system 30 can be arranged at a middle region of the heat exchange unit 10 between the evaporative unit 21 and the condensing unit 23. The indoor air outlet 13 can be arranged on a side wall of the heat exchange unit 10 and at a position of the first air inlet side of the fresh air system 30. In the present application, the indoor air and the outdoor fresh air exchange heat through the heat exchange core 31 (also called heat exchanger). The first air inlet side is in communication with the second air outlet side, and the second air inlet side is in communication with the first air outlet side. The indoor air enters the first air inlet side through the indoor air outlet 13 and is exhausted from the second air outlet side through the fresh air exhaust fan 33. The outdoor fresh air enters the second air inlet side from the outdoor fresh air inlet 14 and is exhausted from the first air outlet side through the fresh air supply fan 32. In the present application, the fresh air supply fan 32 and the fresh air exhaust fan 33 are electrically connected to the control system 40.

[0047] Please continue to refer to Figure 2 In some embodiments, the first air inlet side of the heat exchange core 31 is provided with an air exhaust filter 311, and the second air inlet side of the heat exchange core 31 is provided with a fresh air filter 312.

[0048] Through the above arrangement, the indoor air and the outdoor fresh air entering can be filtered to reduce the impurities such as dust in the air entering the equipment, thereby effectively prolonging the service life of the equipment and improving the cleanliness of the exhausted cold or hot air.

[0049] Please continue to refer to Figure 2 In some embodiments, the evaporative unit 21 includes an evaporator 211 arranged at a top portion inside the heat exchange unit 10 and in communication with the indoor air supply outlet 11, and an evaporative fan 212 arranged below the evaporator 211 and used to communicate the indoor air return outlet 12 and the evaporator 211.

[0050] In the present application, the indoor air return outlet 12 can be arranged on a side wall of the heat exchange unit 10 and at a position of the evaporative fan 212. In the present application, the evaporative fan 212 is electrically connected to the control system 40.

[0051] Please continue to refer to Figure 2In some embodiments, the condensing unit 22 comprises a condensing fan 221 arranged at the bottom of the heat exchange unit 10 and connected to the outdoor exhaust outlet 15, and a condenser 222 arranged above the condensing fan 221 and used to connect the fresh air system 30 and the condensing fan 221.

[0052] In the present application, the outdoor exhaust outlet 15 can be arranged on the side wall of the heat exchange unit 10 and located at the position of the condensing fan 221. In the present application, the condensing fan 221 is electrically connected to the control system 40.

[0053] Please continue to refer to Figure 2 In some embodiments, the compressor unit 23 comprises a compressor 231 arranged at the upper part of the condenser 222, a four-way reversing valve arranged on the exhaust pipeline of the compressor 231, and an electronic expansion valve 232 arranged on one side of the compressor 231. The compressor 231, the condenser 222, the electronic expansion valve 232, the evaporator 211, and the compressor 231 form a loop.

[0054] In the present application, the outdoor fresh air inlet 14 can be arranged on the side wall of the heat exchange unit 10 and located at the position of the compressor 231. In the present application, the compressor unit 23 is electrically connected to the control system 40. In the present application, the compressor 231 can be a horizontal compressor 231 or a vertical compressor 231 arranged in the heat exchange unit 10. The compressor 231 can be installed below the heat exchange unit 10 or in the middle part of the heat exchange unit 10.

[0055] In combination with the above, in the present application, the specific working principle of the heat pump system 20 is as follows: the compressor 231 compresses the refrigerant into high-temperature and high-pressure refrigerant vapor which enters the condenser 222 to exchange heat with the air passing through the condenser 222, and the refrigerant becomes low-temperature and high-pressure refrigerant liquid, and at the same time, the air passing through the condenser 222 is heated. The refrigerant liquid continues to flow in the refrigeration system, is throttled by the electronic expansion valve 232, becomes low-temperature and low-pressure refrigerant liquid, and enters the evaporator 211. Due to the low pressure of the refrigerant liquid, the refrigerant liquid exchanges heat with the air passing through the evaporator 211, absorbs the heat in the air, and flashes into gas. In this process, the air passing through the evaporator 211 is cooled. Then, the refrigerant vapor in the system returns to the compressor 231.

[0056] In the present application, by arranging the four-way reversing valve to control the flow direction of the refrigerant in the compressor 231, the evaporator 211 and the condenser 222 can be switched.

[0057] In the present application, the heat exchanger unit 10 is divided into multiple installation spaces, and the installation spaces are used to respectively fix the evaporator 211, the evaporating fan 212, the compressor 231, the electronic expansion valve 232, the condenser 222, the condensing fan 221, the fresh air supply fan 32, the fresh air exhaust fan 33, and the heat exchange core 31. The wall surface of the installation space is formed with a communication air duct according to the air path guiding mode, so that the air can flow according to the fan guiding.

[0058] Please refer to Figure 3 In some embodiments, the indoor return air inlet 12, the outdoor fresh air inlet 14, and the outdoor exhaust air outlet 15 are all provided in multiple numbers.

[0059] Through the above arrangement, the indoor return air inlet 12, the outdoor fresh air inlet 14, and the outdoor exhaust air outlet 15 are all provided in multiple numbers, which is convenient for on-site construction, and different positions are selected for air duct access according to the on-site situation, so that the application of the integrated heat exchange fresh air air conditioning unit device 100 according to the embodiments of the present application is more flexible.

[0060] In some embodiments, flange structures can be provided at the indoor return air inlet 12, the outdoor fresh air inlet 14, the outdoor exhaust air outlet 15, and the indoor air supply outlet 11, so as to facilitate the connection of the air ducts.

[0061] Please refer to Figure 2 In some embodiments, the control system 40 includes a display control screen 42, which is arranged on the heat exchanger unit 10 and located at the position of the evaporating fan 212.

[0062] Through this arrangement, the display control screen 42 can be more in line with the position of human operation, and the operator can be more convenient to control.

[0063] According to the second aspect of the present application, a use method 300 of an indoor integrated heat exchange fresh air air conditioning unit device 100 is provided, Figure 7 The flow chart of the method 300 is shown. As Figure 7 shown, the steps of the method 300 include:

[0064] S1, setting the device to one of a cooling mode, a heating mode, an air exchange mode, a humidifying mode, and a dehumidifying mode;

[0065] S2, the control system controls the heat pump system to exchange heat of the air entering through the indoor return air inlet and then discharges the air to the external environment through the indoor air supply outlet by the evaporating unit, the condensing unit, and the compressor unit;

[0066] S3, the control system controls the fresh air system, through the heat exchange core, the evaporative unit, the air imported by the outdoor fresh air inlet is exchanged heat, and then is discharged to the external environment through the indoor air outlet; the indoor air exchanges heat with the air imported by the outdoor fresh air inlet through the heat exchange core and the condensing unit, and then is discharged to the external environment through the outdoor air outlet;

[0067] S4, the control system adjusts the running start-stop state or frequency state of the evaporative unit, the condensing unit, the compressor unit and the fresh air system according to different operation mode requirements.

[0068] Through the above-mentioned control method 300, the use method 300 of the integrated heat exchange fresh air air conditioning unit device 100 according to the embodiment of the present application, the control system 40 integrates the heat pump system 20 and the fresh air system 30 together, automatically adjusts the running frequency of the compressor unit 23, automatically adjusts the running frequency of the condensing unit 22 and the evaporative unit 21, and automatically adjusts the running frequency of the fresh air system 30 according to the change of the outdoor environment temperature and the change of the indoor demand, so as to achieve good running energy-saving effect. At the same time, according to different operation mode requirements, the running start-stop state or frequency state of each component can be automatically adjusted, and the intelligent coordination ability is further improved.

[0069] In the above description of the present application, unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected" or "linked" and the like should be understood in a broad sense. For example, as to the term "connected", it can be fixed connection, detachable connection or integral; it can be mechanical connection, electrical connection; it can be direct connection, indirect connection through intermediate medium, or internal connection of two elements or interaction relationship between two elements. Therefore, unless otherwise explicitly limited in the present application, the above-mentioned terms in the present application can be understood according to the specific meaning by the person skilled in the art.

[0070] According to the above description of the present application, the person skilled in the art can also understand that the terms used according to the present application, such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present application, which is only for the purpose of facilitating the description of the present application and simplifying the description, and is not explicitly or implicitly indicated that the devices or elements involved must have the specific orientation, be constructed and operated in the specific orientation, therefore the above-mentioned orientation or positional relationship terms cannot be understood or interpreted as a limitation on the present application.

[0071] In addition, the terms "first" or "second" or the like used in the present application are terms used to refer to numbers or ordinal numbers only for the purpose of description and do not imply or indicate relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, for example, two, three or more, etc., unless otherwise explicitly specified.

[0072] While the present application has been shown and described with reference to various embodiments thereof, it will be understood that such embodiments are by way of example only. Numerous changes, modifications and alternatives can be suggested to one skilled in the art that do not depart from the spirit and scope of the application. It should be understood that various alternatives to the embodiments of the application described herein can be employed in practicing the application. The following claims are intended to define the scope of the application and are accordingly to cover all equivalent or alternative schemes falling within the scope of the claims.

Claims

1. An integrated heat exchange fresh air conditioning unit for indoor use, wherein the indoor unit includes a main wall adjacent to the outdoor environment and partition walls for forming several sub-spaces, wherein a placement space is provided within the main wall or on the partition walls, characterized in that, include: A heat exchange unit is installed within the aforementioned space. The heat exchange unit is equipped with an indoor air supply vent, an indoor return air vent, an indoor exhaust air vent, an outdoor fresh air inlet, and an outdoor exhaust air outlet. The indoor air supply vent, the indoor return air vent, and the indoor exhaust air vent are connected to the respective sub-spaces via partition walls. The outdoor fresh air inlet and the outdoor exhaust air outlet are connected to the outdoor environment via a main wall. The heat exchange unit contains an evaporator unit, a condenser unit, a compressor unit, and a fresh air system. The compressor unit connects to the evaporator unit and the condenser unit to form a heat pump system. The fresh air system contains a heat exchange core. A control system, mounted on the heat exchange unit, is used to electrically connect the evaporator unit, the condenser unit, the compressor unit, and the fresh air system. The control system is configured to include multiple operating modes. These operating modes include: air entering through the indoor return air vent is converted into hot or cold air by the heat pump system and discharged to the indoor environment through the indoor air supply vent; air entering through the outdoor fresh air inlet is converted into hot or cold air by the fresh air system and the evaporator unit and discharged to the indoor environment through the indoor air supply vent; air entering through the indoor exhaust vent exchanges heat with air entering through the outdoor fresh air inlet via the fresh air system, and after heat exchange with the condenser unit, is discharged to the outdoor environment through the outdoor exhaust outlet.

2. The integrated heat exchange fresh air conditioning unit according to claim 1, characterized in that, The control system includes a control module installed on the heat exchange unit. The control module is configured to adjust the start / stop status or frequency of the operation of the evaporator unit, the condenser unit, the compressor unit, and the fresh air system according to different operating mode requirements.

3. The integrated heat exchange fresh air conditioning unit according to claim 1, characterized in that, It also includes an auxiliary heating device, which is installed inside the indoor air outlet and is electrically connected to the control system.

4. The integrated heat exchange fresh air conditioning unit according to any one of claims 1-3, characterized in that, The heat exchange core includes: a first air inlet side connected to the indoor exhaust vent; a second air inlet side connected to the outdoor fresh air inlet; a first air outlet side connected to the second air inlet side; and a second air outlet side connected to the first air inlet side. The fresh air system also includes a fresh air supply fan and a fresh air exhaust fan. The fresh air supply fan is located on the first air outlet side and is connected to the evaporator unit. The fresh air exhaust fan is located on the second air outlet side and is connected to the condenser unit.

5. The integrated heat exchange fresh air conditioning unit according to claim 4, characterized in that, An exhaust filter is provided on the first air inlet side of the heat exchange core, and a fresh air filter is provided on the second air inlet side of the heat exchange core.

6. The integrated heat exchange fresh air conditioning unit according to any one of claims 1-3, characterized in that, The evaporator unit includes: An evaporator is located at the top inside the heat exchange unit and is connected to the indoor air outlet. An evaporator fan is located below the evaporator and is used to connect the indoor return air vent and the evaporator.

7. The integrated heat exchange fresh air conditioning unit according to claim 6, characterized in that, The condensing unit includes: A condenser fan, located at the bottom inside the heat exchange unit and connected to the outdoor exhaust outlet; and, A condenser is disposed above the condenser fan and is used to connect the fresh air system and the condenser fan.

8. The integrated heat exchange fresh air conditioning unit according to claim 7, characterized in that, The compressor unit includes: A compressor, located above the condenser, has a four-way reversing valve installed on its discharge pipe; and, An electronic expansion valve is located on one side of the compressor; The compressor, the condenser, the electronic expansion valve, the evaporator, and the compressor are connected in a loop.

9. The integrated heat exchange fresh air conditioning unit according to any one of claims 1-3, characterized in that, The indoor return air vent, the outdoor fresh air inlet, and the outdoor exhaust air outlet are all configured to be multiple.

10. A method of using an indoor integrated heat exchange fresh air conditioning unit, applied to the integrated heat exchange fresh air conditioning unit according to any one of claims 1-9, characterized in that, The steps of the method include: Set the device to one of the following modes: cooling mode, heating mode, ventilation mode, humidification mode, or dehumidification mode. The control system starts the heat pump system, which exchanges heat with the air entering through the indoor return air inlet through the evaporator, the condenser, and the compressor, and then discharges the air to the external environment through the indoor supply air outlet. The control system starts the fresh air system, and after exchanging heat with the outdoor fresh air inlet through the heat exchange core and the evaporator, the air is discharged to the outside environment through the indoor air outlet; the indoor air passes through the indoor exhaust outlet, exchanges heat with the outdoor fresh air inlet through the heat exchange core, passes through the condenser, and is discharged to the outside environment through the outdoor exhaust outlet. The control system adjusts the start / stop status or frequency of the evaporator, condenser, compressor, and fresh air system according to different operating mode requirements.

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