Integrated air conditioning unit coupled with fresh air heat recovery function

Abstract

The invention relates to an integrated air conditioning unit coupled with a fresh air heat recovery function. The integrated air conditioning unit comprises a shell, a first space, a second space and a fourth space. The first space is provided with an indoor heat exchanger, an air feeder, an air return port and an air supply port; the second space is provided with a heat recovery core body, a fresh air fan, an exhaust fan and a ventilation exhaust outlet; the third space is provided with an outdoor fan and a fresh air opening; and the fourth space is provided with an outdoor heat exchanger and an outdoor exhaust outlet. Thus, by means of the structure, the air conditioning unit achieves indoor airflow circulation, fresh air heat recovery circulation and outdoor airflow circulation. In addition, the air conditioning unit adopts the three-in-one design of air conditioning, fresh air and heat recovery, and the occupied area is reduced. Besides, heat exchange between indoor air and outdoor air is achieved through the heat recovery core body, waste heat in the indoor contaminated air can be fully recovered while the indoor contaminated air is exhausted, the waste heat is used for preheating or precooling fresh air about to enter a room, and energy consumption is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and particularly to an integrated air conditioner unit with a coupled fresh air heat recovery function. Background Art

[0002] In modern residential and commercial buildings, air conditioning systems and fresh air systems are widely used. The air conditioning system is mainly used to adjust the indoor temperature to ensure the comfort of living or working; while the fresh air system is responsible for introducing fresh air from the outside into the room and discharging the polluted air indoors to ensure air quality and meet people's health needs.

[0003] However, in the prior art, the air conditioning system and the fresh air system are usually designed as two independently operating systems, and this separated design has several obvious disadvantages:

[0004] First, since the air conditioning system and the fresh air system need to be installed separately, the floor area occupied by the equipment increases, and the cost is relatively high during installation and subsequent maintenance.

[0005] Second, under extreme weather conditions, such as high temperature in summer or severe cold in winter, the fresh air system will inevitably cause a large amount of heat or cold energy loss during air exchange. And in order to maintain the set indoor temperature, the air conditioning system must consume additional energy to compensate for these losses, thereby increasing the overall energy consumption, accelerating the wear of the air conditioning equipment, and shortening its service life. Summary of the Invention

[0006] In view of the above problems of the prior art, the present application provides an integrated air conditioner unit with a coupled fresh air heat recovery function, which adopts a design that combines air conditioning, fresh air, and heat recovery into one, and has the advantages of compact structure, small floor area, and low energy consumption. To achieve the above object, the first aspect of the present application provides an integrated air conditioner unit with a coupled fresh air heat recovery function, including: a housing and four spaces sequentially divided from top to bottom inside the housing:

[0007] The first space is provided with an indoor heat exchanger, a supply fan, a return air inlet, and a supply air outlet; wherein, indoor air is sucked in through the return air inlet, flows through the indoor heat exchanger for temperature adjustment after passing through the supply fan, and then is sent back into the room through the supply air outlet, forming an indoor air flow cycle;

[0008] The second space is provided with a heat recovery core, a fresh air fan, an exhaust fan, and a ventilation exhaust air outlet;

[0009] The third space is provided with an outdoor fan and a fresh air inlet;

[0010] Among them, the indoor polluted air enters the heat recovery core through the ventilation exhaust outlet, while the outdoor fresh air enters the heat recovery core through the fresh air inlet. The two exchange heat in the heat recovery core. The processed outdoor fresh air is sent into the first space by the fresh air fan, and after temperature adjustment by the indoor heat exchanger, it is sent back into the room through the air supply outlet. The processed indoor polluted air is discharged by the exhaust fan to the third space, and after passing through the outdoor fan, it is temperature-adjusted by the outdoor heat exchanger and then discharged from the unit through the outdoor exhaust outlet, forming a fresh air heat recovery cycle;

[0011] The fourth space is provided with an outdoor heat exchanger and an outdoor exhaust outlet; among them, the outdoor fresh air is inhaled through the fresh air inlet, passes through the outdoor fan and then is temperature-adjusted by the outdoor heat exchanger, and then is discharged from the unit through the outdoor exhaust outlet, forming an outdoor air flow cycle.

[0012] In this way, the air conditioner unit of the present application adopts a design that combines air conditioning, fresh air, and heat recovery in one, that is, integrates fresh air, heat recovery, and air conditioning into a single device. Therefore, the floor area is reduced, the space layout is more flexible, and the overall space utilization rate of the room is improved; and, through the heat recovery core, heat exchange between indoor and outdoor air is realized. While discharging the indoor polluted air, the waste heat in it can be fully recovered and used to preheat or precool the fresh air about to enter the room. Therefore, energy consumption is reduced and the energy efficiency ratio of the air conditioner unit is improved.

[0013] As a possible implementation manner of the first aspect, connection plates are provided between adjacent two spaces, respectively:

[0014] The first connection plate is located between the first space and the second space, and the ventilation holes opened thereon are used to allow the processed outdoor fresh air to enter the first space from the second space;

[0015] The second connection plate is located between the second space and the third space, and the ventilation holes opened thereon are used to allow the processed indoor polluted air to enter the third space from the second space, so as to complete the fresh air heat recovery cycle;

[0016] The third connection plate is located between the third space and the fourth space, and the ventilation holes opened thereon are used to allow the processed outdoor fresh air to enter the fourth space from the third space, and to allow the processed indoor polluted air to enter the third space and the fourth space from the second space, so as to complete the fresh air heat recovery cycle and the outdoor air flow cycle.

[0017] In this way, through the designed connection plates and the ventilation holes arranged thereon, the air flow between each space can flow smoothly, which is beneficial to maintaining the stable operation of the air conditioner unit.

[0018] As a possible implementation of the first aspect, the second space includes a left installation area, an upper right installation area, and a lower right installation area;

[0019] The heat recovery core is installed in the left installation area in a drawable manner, the fresh air fan is fixedly arranged in the upper right installation area, and the exhaust fan is fixedly arranged in the lower right installation area;

[0020] Wherein, the outlet of the fresh air fan is arranged corresponding to the ventilation holes on the first connection plate, and the outlet of the exhaust fan is arranged corresponding to the ventilation holes on the second connection plate.

[0021] In this way, the outlet of the fresh air fan is precisely aligned with the ventilation holes on the first connection plate, ensuring that the fresh air can smoothly enter the first space; similarly, the outlet of the exhaust fan is precisely aligned with the ventilation holes on the second connection plate, facilitating exhaust. That is to say, the aligned arrangement ensures that the flow path of the air flow in the air conditioning unit is the shortest and the smoothest, reducing the air flow resistance and energy loss to a certain extent.

[0022] As a possible implementation of the first aspect, the heat recovery core has a hexagonal structure; the left and right side planes of the heat recovery core are closely attached to the corresponding wall surfaces of the left installation area, and the positions of its upper and lower two vertices are respectively in contact with the inner wall of the second space through angle irons.

[0023] In this way, the heat recovery core with a hexagonal structure has high strength and stability. Coupled with the support and positioning of the angle irons, the heat recovery core is more stable during installation and operation.

[0024] As a possible implementation of the first aspect, a first filter and a second filter are arranged on one side of the heat recovery core;

[0025] The first filter is used to filter the dirty air in the room;

[0026] The second filter is used to filter the fresh air outdoors.

[0027] In this way, by arranging the first filter and the second filter on one side of the heat recovery core, the impurity content in the air entering the heat recovery core is effectively reduced, avoiding blockage, wear or performance degradation inside the heat recovery core caused by long-term contact with pollutants, thereby extending the service life of the heat recovery core.

[0028] As a possible implementation of the first aspect, the air return openings include side air return openings arranged on both sides of the first space and a front air return opening arranged on the front of the first space;

[0029] The air supply openings include a top air supply opening arranged on the top of the first space and a front air supply opening arranged on the front of the first space;

[0030] The ventilation exhaust air outlets include a front ventilation exhaust air outlet provided on the front of the second space and a side ventilation exhaust air outlet provided on the side of the second space;

[0031] The fresh air inlets include a rear fresh air inlet provided on the rear of the third space and a side fresh air inlet provided on the side of the third space;

[0032] The outdoor exhaust air outlets include a rear outdoor exhaust air outlet provided on the rear of the fourth space and a side outdoor exhaust air outlet provided on the side of the fourth space.

[0033] In this way, by providing the return air inlets, supply air outlets, ventilation exhaust air outlets, fresh air inlets and outdoor exhaust air outlets at different positions and directions, the air conditioner unit can be flexibly adjusted according to different indoor environments, personnel activities and seasonal changes to meet diverse usage requirements and improve the applicability of the air conditioner unit.

[0034] As a possible implementation manner of the first aspect, when the integrated air conditioner unit is used for multi-room air supply, the top supply air outlet conveys air to each room through an indoor air supply duct, and the side return air inlet sucks the indoor air back into the air conditioner unit through an indoor air return duct and discharges it from the air conditioner unit;

[0035] When the integrated air conditioner unit is used for single-room air supply, the front supply air outlet and the front return air inlet directly supply air to the room and extract air from the room.

[0036] In this way, the air conditioner unit of the present application can be applicable to scenarios of multi-room air supply or single-room air supply. Whether the air conditioner unit is directly embedded in the wall leading to the outdoors or installed inside a building, through reasonable duct design and layout, efficient and reliable air treatment and distribution can be achieved.

[0037] As a possible implementation manner of the first aspect, a refrigeration and heating system is provided inside the housing;

[0038] The refrigeration and heating system includes: a compressor, a four-way reversing valve and an expansion valve;

[0039] The compressor is connected to the four-way reversing valve through a pipeline, the four-way reversing valve is also respectively connected to the indoor heat exchanger and the outdoor heat exchanger through pipelines, and the expansion valve is located between the indoor heat exchanger and the outdoor heat exchanger and is connected to the indoor heat exchanger and the outdoor heat exchanger through pipelines.

[0040] In this way, the air conditioner unit of the present application can switch between heating and cooling modes according to seasonal changes, ensuring a comfortable indoor environment throughout the year. Whether in the cold winter or the hot summer, users can enjoy a suitable temperature, improving the comfort of the living and working environment.

[0041] As a possible implementation manner of the first aspect, the refrigeration and heating system further includes a spray system;

[0042] The spray system is configured to spray water mist onto the outdoor heat exchanger in the cooling mode.

[0043] In this way, in the hot summer, the spray system can significantly improve the refrigeration capacity of the air conditioner unit, ensuring a stable refrigeration effect in a high-temperature environment.

[0044] As a possible implementation manner of the first aspect, the integrated air conditioner unit is of a vertical design, the bottom of the housing is provided with feet, and a plurality of fixing ears are provided on both sides of the housing.

[0045] In this way, the feet at the bottom can provide stable support, preventing the air conditioner unit from shaking during operation, especially in an environment with large vibrations, ensuring the stability of the equipment. And the design of the fixing ears enables installers to more easily adjust the position and angle of the air conditioner unit. That is to say, the air conditioner unit can be easily fixed at a certain position through the fixing ears to meet the requirements of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a layout diagram of each component of an air conditioner unit provided by the present application;

[0047] Figure 2 is a cross-sectional view of an air conditioner unit provided by the present application;

[0048] Figure 3 is a schematic diagram of the external structure of an air conditioner unit provided by the present application;

[0049] Figure 4 is a schematic diagram of multi-room air supply provided by the present application;

[0050] Figure 5 is a schematic diagram of single-room air supply provided by the present application;

[0051] Figure 6 is a schematic diagram of a refrigeration and heating system provided by the present application;

[0052] Figure 7 is a schematic diagram of the air flow direction of an air conditioner unit provided by the present application.

[0053] It should be understood that in the above structural schematic diagram, the sizes and shapes of the respective block diagrams are for reference only and should not constitute an exclusive interpretation of the embodiments of the present invention. The relative positions and inclusion relationships between the respective block diagrams presented in the structural schematic diagram only schematically represent the structural associations between the block diagrams, rather than limiting the physical connection manners of the embodiments of the present invention. Detailed Embodiments

[0054] The following are examples given in conjunction with the accompanying drawings to further illustrate the technical solutions provided in this application. It should be understood that the system structures and service scenarios provided in the embodiments of this application are mainly used to illustrate possible implementation manners of the technical solutions of this application and should not be construed as the only limitation to the technical solutions of this application. Those of ordinary skill in the art will know that with the evolution of the system structure and the emergence of new service scenarios, the technical solutions provided in this application are equally applicable to similar technical problems.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. In case of inconsistency, the meaning described in this specification or the meaning obtained according to the content recorded in this specification shall prevail. In addition, the terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0056] The embodiments of this application provide, as Figure 1 shown, including: a housing 100 and four spaces sequentially divided from top to bottom within the housing 100:

[0057] A first space 101, provided with an indoor heat exchanger 10, a blower 1, a return air inlet, and a supply air outlet; wherein, indoor air is sucked in through the return air inlet, flows through the indoor heat exchanger 10 after passing through the blower 1 for temperature adjustment, and then is sent back into the room through the supply air outlet, forming an indoor air flow cycle;

[0058] A second space 102, provided with a heat recovery core 5, a fresh air fan 2, an exhaust fan 3, and a ventilation exhaust outlet;

[0059] A third space 103, provided with an outdoor fan 4 and a fresh air inlet;

[0060] Among them, the indoor polluted air enters the heat recovery core 5 through the ventilation exhaust port, while the outdoor fresh air enters the heat recovery core 5 through the fresh air inlet. The two exchange heat in the heat recovery core 5. The processed outdoor fresh air is sent into the first space 101 by the fresh air fan 2. After the temperature is adjusted by the indoor heat exchanger 10, it is sent back into the room through the air supply port. The processed indoor polluted air is discharged to the third space 103 by the exhaust fan 3. After passing through the outdoor fan 4, it is temperature-adjusted by the outdoor heat exchanger 11 and then discharged from the unit through the outdoor exhaust port, forming a fresh air heat recovery cycle;

[0061] The fourth space 104 is provided with an outdoor heat exchanger 11 and an outdoor exhaust port; among them, the outdoor fresh air is inhaled through the fresh air inlet, passes through the outdoor fan 4, is temperature-adjusted by the outdoor heat exchanger 11, and then is discharged from the unit through the outdoor exhaust port, forming an outdoor air flow cycle.

[0062] Thus, the air conditioner unit of the present application adopts a design that combines air conditioning, fresh air, and heat recovery in one, that is, integrates fresh air, heat recovery, and air conditioning into a single device. Therefore, it reduces the floor area, makes the space layout more flexible, and improves the overall space utilization rate of the room; and, through the heat recovery core 5, heat exchange between indoor and outdoor air is realized. While discharging the indoor polluted air, the waste heat therein can be fully recovered and used to preheat or precool the fresh air about to enter the room. Therefore, energy consumption is reduced and the energy efficiency ratio of the air conditioner unit is improved.

[0063] In addition, the air conditioner unit of the present application is designed as an integrated unit, with the characteristics of rapid deployment. It is flexible and convenient in the installation and disassembly process, and the engineering volume is small, especially suitable for places such as mobile homes, apartments, and hotel rooms that require large-scale deployment.

[0064] Exemplarily, the type of the indoor heat exchanger 10 can be a finned tube heat exchanger, a plate heat exchanger, or a spiral tube heat exchanger, which is used to adjust the indoor air temperature according to the cooling / heating demand. The outdoor heat exchanger 11 also serves as a preheating / precooling device, adopting a structure similar to that of the indoor heat exchanger 10, but designed to process outdoor air.

[0065] And, the material of the heat recovery core 5 can adopt high-efficiency heat exchange materials such as aluminum foil, plastic film, or graphite composite material to improve the energy recovery efficiency.

[0066] In some embodiments, as Figure 2 shown, connection plates are provided between adjacent two spaces, respectively:

[0067] The first connecting plate 105 is located between the first space 101 and the second space 102. The ventilation holes 108 opened thereon are used to allow the processed outdoor fresh air to enter the first space 101 from the second space 102;

[0068] The second connecting plate 106 is located between the second space 102 and the third space 103. The ventilation holes 108 opened thereon are used to allow the processed indoor polluted air to enter the third space 103 from the second space 102, so as to complete the fresh air heat recovery cycle;

[0069] The third connecting plate 107 is located between the third space 103 and the fourth space 104. The ventilation holes 108 opened thereon are used to allow the processed outdoor fresh air to enter the fourth space 104 from the third space 103, and to allow the processed indoor polluted air to enter the third space 103 and the fourth space 104 from the second space 102, so as to complete the fresh air heat recovery cycle and the outdoor air flow cycle.

[0070] In this way, through the designed connecting plates and the ventilation holes 108 arranged thereon, the air flow between the spaces can flow smoothly, which is beneficial to maintaining the stable operation of the air conditioner unit.

[0071] In some embodiments, the second space 102 includes a left installation area, an upper right installation area and a lower right installation area;

[0072] The heat recovery core 5 is installed in the left installation area in a pull-out manner, the fresh air fan 2 is fixedly arranged in the upper right installation area, and the exhaust fan 3 is fixedly arranged in the lower right installation area;

[0073] Wherein, the outlet of the fresh air fan 2 is arranged corresponding to the ventilation hole 108 on the first connecting plate 105, and the outlet of the exhaust fan 3 is arranged corresponding to the ventilation hole 108 on the second connecting plate 106.

[0074] In this way, the outlet of the fresh air fan 2 is precisely aligned with the ventilation hole 108 on the first connecting plate 105, ensuring that the fresh air can smoothly enter the first space 101; similarly, the outlet of the exhaust fan 3 is precisely aligned with the ventilation hole 108 on the second connecting plate 106, facilitating exhaust. That is to say, the alignment setting ensures that the air flow path in the air conditioner unit is the shortest and the smoothest, reducing the air flow resistance and energy loss to a certain extent.

[0075] In some embodiments, the heat recovery core 5 has a hexagonal structure; the left and right side planes of the heat recovery core 5 are closely attached to the corresponding wall surfaces of the left installation area, and the positions of its upper and lower two vertices are respectively in contact with the inner wall of the second space 102 through angle irons 109.

[0076] Among them, the angle iron 109, as a strong metal structural member, is used to support the upper and lower vertices of the heat recovery core 5 and ensure its precise positioning, preventing the heat recovery core 5 from shifting during installation or operation.

[0077] In this way, the heat recovery core 5 with a hexagonal structure has high strength and stability. Coupled with the support and positioning of the angle iron 109, the heat recovery core 5 is more stable during installation and operation.

[0078] It should be noted that the heat recovery core 5 is designed to be not only installed or disassembled by a pulling action during installation, but also able to rotate 180° around its center point. Such a design allows the heat recovery core 5 to flexibly select the left or right side to connect the air duct according to actual needs during installation, so as to meet the requirements of different scenarios and improve the flexibility of the design.

[0079] In some embodiments, a first filter 6 and a second filter 7 are provided on one side of the heat recovery core 5;

[0080] The first filter 6 is used to filter the dirty air in the room;

[0081] The second filter 7 is used to filter the fresh air outside.

[0082] Specifically, the first filter 6 is specifically used to filter the dirty air in the room, effectively removing pollutants such as dust, pollen, and bacteria in the air, preventing these harmful substances from being re-introduced into the room during the heat recovery process, thereby significantly improving the cleanliness and health level of the indoor air. The second filter 7 is specifically used to filter the fresh air outside, blocking impurities such as dust and particulate matter from the outside when introducing fresh air, ensuring that the air entering the room is pure and pollution-free, and further enhancing the freshness and comfort of the indoor air.

[0083] In this way, by providing the first filter 6 and the second filter 7 on one side of the heat recovery core 5, the impurity content in the air entering the heat recovery core 5 is effectively reduced, avoiding blockage, wear, or performance degradation of the heat recovery core 5 due to long-term contact with pollutants, thereby extending the service life of the heat recovery core 5.

[0084] In some embodiments, as Figure 3 shown, the return air openings include side return air openings 14 provided on both sides of the first space 101 and a front return air opening 15 provided on the front of the first space 101;

[0085] The supply air openings include a top supply air opening 12 provided on the top of the first space 101 and a front supply air opening 13 provided on the front of the first space 101;

[0086] The ventilation exhaust openings include a front ventilation exhaust opening 16 provided on the front of the second space 102 and a side ventilation exhaust opening 17 provided on the side of the second space 102;

[0087] The fresh air inlets include a rear fresh air inlet 20 provided on the rear of the third space 103 and a side fresh air inlet 18 provided on the side of the third space 103;

[0088] The outdoor exhaust openings include a rear outdoor exhaust opening 21 provided on the rear of the fourth space 104 and a side outdoor exhaust opening 19 provided on the side of the fourth space 104.

[0089] It is worth mentioning that regarding the position of the side fresh air inlet 18, it can be set on both sides of the second space, or on both sides of the third space, or at the connection between the second space and the third space. Specifically, it can be set according to the actual situation and is not specifically limited here.

[0090] In this way, by setting the return air inlets, supply air inlets, ventilation exhaust openings, fresh air inlets, and outdoor exhaust openings at different positions and directions, the air conditioner unit can be flexibly adjusted according to different indoor environments, personnel activities, and seasonal changes to meet diverse usage requirements and improve the applicability of the air conditioner unit.

[0091] In some embodiments, as shown in FIG. 4, when the integrated air conditioner unit is used for multi-room air supply, the top supply air inlet 12 conveys air to each room through an indoor air supply duct, and the side return air inlet 14 draws indoor air back into the air conditioner unit through an indoor air return duct and discharges it from the air conditioner unit;

[0092] As Figure 5 shown, when the integrated air conditioner unit is used for single-room air supply, the front supply air inlet 13 and the front return air inlet 15 directly supply air into the room and draw air from the room.

[0093] Among them, whether it is multi-room air supply or single-room air supply, the installation of the air conditioner unit can be in the following two situations:

[0094] Situation 1: The air conditioner unit is directly installed on the wall leading to the outdoors. Then, the air conditioner unit can use the opening on the wall for direct air intake and exhaust, without the need for additional duct connection. Therefore, this method simplifies the installation process, reduces the use of ducts, and lowers the cost.

[0095] Case 2: The air conditioner unit is installed inside the building. Since it cannot communicate directly with the external environment, air ducts need to be connected to achieve air intake and exhaust. The air ducts can introduce outdoor air into the unit or discharge the air processed by the unit outdoors. Therefore, although this method increases the installation complexity, it provides greater installation flexibility, allowing the unit to be installed at any location in the building.

[0096] In summary, the air conditioner unit of the present application is compatible with multiple air supply and exhaust methods. According to different installation locations, direct air supply / exhaust or air duct air supply / exhaust can be selected.

[0097] In this way, the air conditioner unit of the present application can be applied to scenarios of multi-room air supply or single-room air supply. Whether the air conditioner unit is directly embedded in the wall leading to the outdoors or installed inside the building, through reasonable air duct design and layout, efficient and reliable air treatment and distribution can be achieved.

[0098] In some embodiments, as Figure 6 shown, a refrigeration and heating system is provided inside the housing 100;

[0099] The refrigeration and heating system includes: a compressor, a four-way reversing valve, and an expansion valve;

[0100] The compressor is connected to the four-way reversing valve through a pipeline. The four-way reversing valve is also connected to the indoor heat exchanger 10 and the outdoor heat exchanger 11 through pipelines respectively. The expansion valve is located between the indoor heat exchanger 10 and the outdoor heat exchanger 11 and is connected to the indoor heat exchanger 10 and the outdoor heat exchanger 11 through pipelines.

[0101] Specifically, in the refrigeration mode, the working process is generally as follows: The compressor is responsible for compressing the low-temperature and low-pressure gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant. After passing through the four-way reversing valve, the high-temperature and high-pressure gaseous refrigerant enters the outdoor heat exchanger (i.e., the condenser) and is cooled and condensed into a liquid refrigerant. When the liquid refrigerant passes through the expansion valve, due to the throttling effect, its pressure and temperature are further reduced, becoming a low-temperature and low-pressure liquid refrigerant, ready to enter the evaporator. In the evaporator, the low-temperature and low-pressure liquid refrigerant absorbs the heat of the indoor air and evaporates, becoming a low-temperature and low-pressure gaseous refrigerant. The evaporated low-temperature and low-pressure gaseous refrigerant returns to the compressor through the return air pipeline, forming a refrigeration cycle.

[0102] In the heating mode, the working process is roughly as follows: The compressor is also responsible for compressing the refrigerant. However, in the heating mode, the flow direction of the refrigerant is opposite to that in the cooling mode. That is, a four-way reversing valve is used to change the flow direction of the refrigerant. The high-temperature and high-pressure gaseous refrigerant releases heat to the indoor air in the indoor heat exchanger 10, raising the indoor temperature. The expansion valve is also used to reduce the pressure and temperature of the refrigerant. The low-temperature and low-pressure liquid refrigerant absorbs heat from the outdoor air and evaporates in the outdoor heat exchanger 11. The evaporated low-temperature and low-pressure gaseous refrigerant returns to the compressor, forming a heating cycle.

[0103] Among them, the compressor can be referred to Figure 1 the label 8 in Figure 1 but it does not fully show all the components of the refrigeration and heating system.

[0104] In this way, the air conditioner unit of the present application can switch between the heating or cooling mode according to the season change, ensuring a comfortable indoor environment throughout the year. Whether in the cold winter or the hot summer, users can enjoy a suitable temperature, improving the comfort of the living and working environment.

[0105] In some embodiments, the refrigeration and heating system further includes a spray system;

[0106] The spray system is configured to spray water mist onto the outdoor heat exchanger 11 in the cooling mode.

[0107] In this way, in the hot summer, the spray system can significantly improve the refrigeration capacity of the air conditioner unit, ensuring a stable refrigeration effect in a high-temperature environment.

[0108] For example, the spray system may include, but is not limited to, the following components: a water source, a water pump, and an atomizing device;

[0109] Among them, the atomizing device can usually be one or more nozzles, which convert water into fine water mist particles. These nozzles can be designed in different spray patterns, such as conical spray, fan-shaped spray, etc., to adapt to different heat exchanger shapes and sizes.

[0110] The working principle of the spray system is as follows: In the cooling mode, when the temperature of the outdoor heat exchanger (i.e., the condenser) is too high, the spray system will be activated, and fine water mist particles will be sprayed onto the condenser surface. Using the principle of heat absorption by water evaporation to reduce the temperature of the condenser, thereby improving the refrigeration efficiency.

[0111] It is worth noting that the spray cooling function of the spray system is only enabled during summer cooling, avoiding wasting energy when it is not needed.

[0112] In some embodiments, the integrated air conditioner unit is of a vertical design. The bottom of the housing 100 is provided with floor feet 23, and a plurality of fixing lugs 22 are provided on both sides of the housing 100.

[0113] Specifically, the fixing lugs 22 are evenly distributed on both sides of the housing 100 to ensure uniform stress on the air conditioner unit during installation and avoid structural damage caused by local stress concentration.

[0114] Among them, the positions and quantities of the floor feet 23 and the fixing lugs 22 can be flexibly adjusted according to specific requirements to adapt to different installation environments and requirements.

[0115] In this way, the floor feet 23 at the bottom can provide stable support to prevent the air conditioner unit from shaking during operation, especially in an environment with large vibrations, ensuring the stability of the equipment. Moreover, the design of the fixing lugs 22 enables installers to more easily adjust the position and angle of the air conditioner unit. That is to say, the air conditioner unit can be easily fixed at a certain position through the fixing lugs 22, such as fixed on the wall of a building, equipment room or in a closet to meet the needs of different scenarios.

[0116] It should be noted that the integrated air conditioner unit can not only adopt a vertical design, but also flexibly adopt a ceiling-mounted or wall-mounted installation form, realizing diversified installation forms, meeting the needs of different installation methods, and being able to blend in with the building decoration style, making it more beautiful. When ceiling-mounted or wall-mounted, the structural form of the air conditioner unit will be adjusted accordingly, canceling the floor feet 23 at the bottom, and only requiring lifting lugs or other suitable fixing devices to ensure that the air conditioner unit can be firmly installed on the ceiling or wall. Although the installation method and external structure have changed, no matter which installation form is adopted, the core working principles such as refrigeration, heating, and air circulation inside the air conditioner unit remain unchanged.

[0117] Therefore, by changing the structural form and device layout of the air conditioner unit, various forms of air conditioner units such as floor-standing, wall-mounted, ceiling-mounted, and outdoor-mounted types can be designed, and these all fall within the scope covered by this application.

[0118] In some embodiments, the housing 100 uses sheet metal as the unit frame, with a detachable maintenance door provided on the outside and the internal components being individually modularized.

[0119] In this way, a series of key components such as the air supply fan 1, fresh air fan 2, exhaust fan 3, outdoor fan 4, heat recovery core 5, and compressor in this application can all be maintained and repaired from the indoor front. This design greatly facilitates technicians to debug, diagnose faults, and eliminate them for the system in an indoor environment.

[0120] In some embodiments, a control box 9 is further included inside the housing 100. The control box 9 is electrically connected to devices such as the blower 1, the fresh air fan 2, the exhaust fan 3, and the outdoor fan 4 respectively, and is used to control the start and stop of these devices.

[0121] Combined with the above structural description, Figure 7 as shown in the figure, the working principle of the air conditioning unit described in the present application will be described:

[0122] The air conditioning unit of the present application integrates indoor air circulation, fresh air heat recovery circulation, outdoor air circulation, and refrigeration and heating functions.

[0123] Indoor air is sucked in through the return air inlet. The blower 1 provides power to guide the air sucked in through the return air inlet to the indoor heat exchanger 10. The air whose temperature has been adjusted is sent back into the room through the air supply outlet, completing the indoor air circulation;

[0124] Indoor dirty air is introduced by the exhaust fan 3. First, it is filtered by the first filter 6, and then heat exchange is carried out with fresh air in the heat recovery core 5. The dirty air after heat exchange is sent into the exhaust fan 3 and discharged to the third space 103, and then flows through the outdoor heat exchanger 11 for temperature adjustment after passing through the outdoor fan 4, and is discharged from the unit through the outdoor exhaust outlet; at the same time, after the fresh air fan 2 introduces outdoor fresh air into the air conditioning unit, it is first filtered by the second filter 7, and then heat exchange is carried out with the indoor exhaust air through the heat recovery core 5. The pre-treated fresh air is mixed with the indoor return air and then sent to the indoor heat exchanger 10 by the blower 1 for heating or cooling treatment, and finally sent back into the room through the air supply outlet, completing the fresh air heat recovery circulation.

[0125] After the fresh air fan 2 introduces outdoor fresh air into the air conditioning unit, the outdoor fan 4 provides power to guide the sucked air to the outdoor heat exchanger 11. The air whose temperature has been adjusted is discharged through the outdoor exhaust outlet, completing the outdoor air circulation;

[0126] Outdoor fresh air is sucked in through the fresh air inlet, passes through the outdoor fan 4, is temperature-adjusted by the outdoor heat exchanger 11, and then is discharged from the unit through the outdoor exhaust outlet, forming the outdoor air circulation.

[0127] In addition, the terms "first, second, third, etc." or similar terms such as module A, module B, module C, etc. in the specification and claims are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that, where permitted, the specific order or sequence can be interchanged so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0128] The term "comprising" as used in the description and claims should not be construed as limited to the content listed thereafter; it does not exclude other elements or steps. Thus, it should be interpreted as specifying the presence of the stated features, integers, steps or components, but not excluding the presence or addition of one or more other features, integers, steps or components and their groups. Thus, the expression "a device comprising devices A and B" should not be limited to a device consisting only of components A and B.

[0129] As used herein, "an embodiment" or "embodiments" means that the specific features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in an embodiment" or "in embodiments" that appear throughout this specification are not necessarily all referring to the same embodiment, but may. Further, in one or more embodiments, the various specific features, structures, or characteristics may be combined in any suitable manner, as will be apparent to those of ordinary skill in the art from this disclosure.

[0130] Note that the above is only a preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and without departing from the concept of the present application, more other equivalent embodiments may be included, all of which fall within the protection scope of the present application.

Claims

1. An integrated air conditioning unit coupled with a fresh air heat recovery function, characterized in that: include: A housing (100) and four spaces divided from top to bottom in the housing (100): The first space (101) is provided with an indoor heat exchanger (10), a blower (1), a return air port and an air supply port; wherein indoor air is sucked in through the return air port, passes through the blower (1), flows through the indoor heat exchanger (10) for temperature adjustment, and is then sent back to the room through the air supply port, thereby forming an indoor air flow cycle; The second space (102) is provided with a heat recovery core (5), a fresh air fan (2), an exhaust fan (3) and a ventilation outlet; The third space (103) is provided with an outdoor fan (4) and a fresh air outlet; Indoor polluted air enters the heat recovery core (5) through the ventilation outlet, and outdoor fresh air enters the heat recovery core (5) through the fresh air outlet. The two exchange heat in the heat recovery core (5). The treated outdoor fresh air is sent into the first space (101) by the fresh air fan (2), and after being temperature-adjusted by the indoor heat exchanger (10), it is sent back to the room through the air supply outlet. The treated indoor polluted air is discharged to the third space (103) by the exhaust fan (3), and after passing through the outdoor fan (4), it is temperature-adjusted by the outdoor heat exchanger (11), and then discharged from the unit through the outdoor exhaust outlet, forming a fresh air heat recovery cycle. The fourth space (104) is provided with an outdoor heat exchanger (11) and an outdoor exhaust port; wherein outdoor fresh air is sucked in through the fresh air port, passes through the outdoor fan (4), and is temperature-adjusted by the outdoor heat exchanger (11), and then is discharged from the unit through the outdoor exhaust port, thereby forming an outdoor air flow circulation.

2. The integrated air conditioning unit according to claim 1, characterized in that: There are connecting plates between two adjacent spaces, namely: A first connecting plate (105) is located between the first space (101) and the second space (102), and has a ventilation hole (108) formed thereon for allowing treated outdoor fresh air to enter the first space (101) from the second space (102); A second connecting plate (106) is located between the second space (102) and the third space (103), and a ventilation hole (108) is provided on the second connecting plate for allowing the treated indoor polluted air to enter the third space (103) from the second space (102), so as to complete the fresh air heat recovery cycle; The third connecting plate (107) is located between the third space (103) and the fourth space (104), and the ventilation holes (108) provided thereon are used to allow the treated outdoor fresh air to enter the fourth space (104) from the third space (103), and to allow the treated indoor polluted air to enter the third space (103) and the fourth space (104) from the second space (102), so as to complete the fresh air heat recovery cycle and the outdoor air flow cycle.

3. The integrated air conditioning unit according to claim 2, characterized in that: The second space (102) comprises a left installation area, an upper right installation area and a lower right installation area; The heat recovery core (5) is installed in the left installation area by pulling out, the fresh air fan (2) is fixedly installed in the upper right installation area, and the exhaust fan (3) is fixedly installed in the lower right installation area; The outlet of the fresh air fan (2) is arranged corresponding to the ventilation hole (108) on the first connecting plate (105), and the outlet of the exhaust fan (3) is arranged corresponding to the ventilation hole (108) on the second connecting plate (106).

4. The integrated air conditioning unit according to claim 3, characterized in that: The heat recovery core (5) has a hexagonal structure; the left and right side planes of the heat recovery core (5) are tightly attached to the corresponding wall surface of the left installation area, and the upper and lower vertices thereof are respectively in contact with the inner wall of the second space (102) through angle irons (109).

5. The integrated air conditioning unit according to claim 4, characterized in that: A first filter (6) and a second filter (7) are provided on one side of the heat recovery core (5); The first filter (6) is used to filter dirty indoor air; The second filter (7) is used to filter outdoor fresh air.

6. The integrated air conditioning unit according to claim 1, characterized in that: The air return port comprises side air return ports (14) arranged on both sides of the first space (101) and a front air return port (15) arranged on the front of the first space (101); The air supply port comprises a top air supply port (12) arranged at the top of the first space (101) and a front air supply port (13) arranged at the front of the first space (101); The ventilation and exhaust vents include a front ventilation and exhaust vent (16) arranged on the front of the second space (102) and a side ventilation and exhaust vent (17) arranged on the side of the second space (102); The fresh air inlet comprises a back fresh air inlet (20) arranged at the back of the third space (103) and a side fresh air inlet (18) arranged at the side of the third space (103); The outdoor air outlet comprises a rear outdoor air outlet (21) arranged at the rear of the fourth space (104) and a side outdoor air outlet (19) arranged at the side of the fourth space (104).

7. The integrated air conditioning unit according to claim 6, characterized in that: When the integrated air conditioning unit is used to supply air to multiple rooms, the top air supply port (12) delivers air to each room through the indoor air supply pipe, and the side air return port (14) draws indoor air back to the air conditioning unit through the indoor air return pipe and discharges the air conditioning unit; When the integrated air conditioning unit is used to supply air to a single room, the front air supply port (13) and the front air return port (15) directly supply air into the room and extract air from the room.

8. The integrated air conditioning unit according to claim 1, characterized in that: A cooling and heating system is arranged in the housing (100); The refrigeration and heating system comprises: a compressor, a four-way reversing valve and an expansion valve; The compressor is connected to the four-way reversing valve via a pipeline, and the four-way reversing valve is also connected to the indoor heat exchanger (10) and the outdoor heat exchanger (11) via pipelines respectively. The expansion valve is located at the indoor heat exchanger (10) and the outdoor heat exchanger (11), and is connected to the indoor heat exchanger (10) and the outdoor heat exchanger (11) via pipelines.

9. The integrated air conditioning unit according to claim 8, characterized in that: The refrigeration and heating system also includes a spray system; The spray system is configured to spray water mist onto the outdoor heat exchanger (11) in a cooling mode.

10. The integrated air conditioning unit according to claim 1, characterized in that: The integrated air conditioning unit is of vertical design, the bottom of the shell (100) is provided with a foot (23), and two sides of the shell (100) are provided with a plurality of fixing ears (22).

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