Heating and ventilation outdoor unit assembly, heating and ventilation outdoor unit and heating and ventilation equipment

Abstract

The invention relates to the technical field of heating and ventilation, in particular to a heating and ventilation outdoor unit assembly, a heating and ventilation outdoor unit and heating and ventilation device.The heating and ventilation outdoor unit assembly comprises a supporting base and a four-way valve, the four-way valve is arranged above the supporting base, the four-way valve and the supporting base are arranged at an interval, and the four-way valve comprises a main valve body; the main valve body is provided with a first connector used for being communicated with an exhaust port of a compressor of the heating and ventilation equipment, and the first connector is arranged on the bottom side of the main valve body. The first connector can be directly connected with a refrigerant pipeline on the lower portion so as to be communicated with an exhaust port of the compressor, pipeline arrangement is simplified, assembling and overhauling of equipment are facilitated, an exhaust path between the compressor and the four-way valve is shortened, flowing smoothness of refrigerants is improved, and the efficiency of the heating and ventilation equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of HVAC technology, and in particular to a HVAC outdoor unit assembly, a HVAC outdoor unit and HVAC equipment. Background Art

[0002] This section merely provides background information related to the present application and is not necessarily prior art.

[0003] With the development of society and the advancement of science and technology, HVAC equipment (HVAC system) is being used more and more widely. HVAC equipment can provide both cooling and heating, and can meet the various needs of users. In HVAC equipment, the four-way valve is a key component that can control the flow direction of the refrigerant (coolant) and switch between cooling and heating modes.

[0004] Although the existing four-way valve technology can meet basic needs in terms of function, there are some problems in practical application. For example, the piping layout of the four-way valve is often messy, which not only increases the complexity of the equipment, but also increases the difficulty of installation and maintenance. The complexity of the piping may also cause poor refrigerant flow and affect the operating efficiency of the equipment. Summary of the invention

[0005] The purpose of the present application is to at least alleviate the problem of a relatively messy pipeline arrangement of a four-way valve. This purpose is achieved through the following technical solutions:

[0006] The first aspect of the present application proposes a HVAC outdoor unit assembly, including a support base and a four-way valve, the four-way valve is arranged above the support base and spaced apart from the support base, the four-way valve includes a main valve body, the main valve body has a first interface, the first interface is used to communicate with the exhaust port of the compressor of the HVAC equipment, and the first interface is arranged on the bottom side of the main valve body.

[0007] According to the HVAC equipment outdoor unit component of the present application, the first interface is an exhaust interface of the four-way valve used to connect with the exhaust port of the compressor. The first interface is arranged on the bottom side of the main valve body. The first interface can be directly connected to the refrigerant pipeline below to connect with the exhaust port of the compressor, which simplifies the pipeline layout, facilitates the assembly and maintenance of the equipment, and shortens the exhaust path between the compressor and the four-way valve, thereby improving the smoothness of the refrigerant flow and improving the efficiency of the HVAC equipment.

[0008] In addition, the HVAC equipment outdoor unit assembly according to the present application may also have the following additional technical features:

[0009] In some embodiments of the present application, the HVAC outdoor unit assembly also includes an oil separator, which is disposed on the support base. The oil separator is configured to connect the exhaust port of the compressor with the first interface, and the oil separator has a first oil separation outlet connected to and communicated with the first interface. In the vertical direction, the first oil separation outlet is located below the first interface.

[0010] In some embodiments of the present application, in the vertical direction, the oil separator is disposed below the four-way valve.

[0011] In some embodiments of the present application, the first oil outlet is disposed on the top wall of the oil separator.

[0012] In some embodiments of the present application, the first oil outlet is connected and communicated with the first interface via a first refrigerant pipeline, and the first refrigerant pipeline is configured to support the four-way valve so that the four-way valve is fixed.

[0013] In some embodiments of the present application, along the vertical direction, a setting height of any refrigerant flow downstream of the first refrigerant pipeline is not lower than a setting height of an upstream portion connected to the downstream portion.

[0014] In some embodiments of the present application, the oil separator is provided in plurality, and the plurality of oil separators are arranged side by side on the supporting base, the first refrigerant pipeline includes a first main pipeline and a plurality of branch pipelines, the first oil separation outlets of the plurality of oil separators are respectively connected and communicated with the inlets of the plurality of branch pipelines one by one, the outlets of the plurality of branch pipelines are connected in parallel to the first main pipeline, and the outlet of the first main pipeline is connected and communicated with the first interface.

[0015] In some embodiments of the present application, the main valve body also has a second interface, a third interface and a fourth interface, the second interface is used to communicate with the return air port of the compressor, the third interface is used to communicate with the outdoor heat exchanger, and the fourth interface is used to communicate with the indoor heat exchanger, and the four-way valve is configured so that the first interface can be switchably connected to one of the third interface and the fourth interface and the second interface can be switchably connected to the other of the third interface and the fourth interface, and at least one of the first interface, the second interface and the third interface is arranged on the top side of the four-way valve.

[0016] In some embodiments of the present application, the HVAC outdoor unit assembly also includes a gas-liquid separator, which is disposed on the support base, and the gas-liquid separator is configured to connect the return air port of the compressor with the second interface, and the gas-liquid separator has a first gas-liquid separation inlet connected to the second interface, and the first gas-liquid separation inlet is disposed above the second interface, and the second interface is disposed on the top side of the four-way valve.

[0017] In some embodiments of the present application, the first gas-liquid separation inlet is arranged on the top wall of the gas-liquid separator.

[0018] In some embodiments of the present application, the axial direction of the main valve body intersects with the vertical direction, the four interfaces of the main valve body are all arranged on the circumferential side wall of the main valve body, and one of the four interfaces of the main valve body is arranged on the bottom side of the main valve body and is configured as the first interface.

[0019] In some embodiments of the present application, the HVAC outdoor unit assembly is also provided with a one-way valve, which is connected between the first oil separator outlet and the first refrigerant pipeline, and the one-way valve is integrated into the shell of the oil separator through the first oil separator outlet.

[0020] In some embodiments of the present application, the HVAC outdoor unit assembly also includes a high-pressure switch, which is used to stop the compressor when the exhaust pressure of the compressor exceeds a preset threshold, and the high-pressure switch is installed on the housing of the oil separator.

[0021] In some embodiments of the present application, the first interface is connected to and communicated with a first main line, the first main line is used to communicate with the exhaust port of the compressor, and the HVAC outdoor unit assembly further includes a high-pressure sensor, the high-pressure sensor is installed on the first main line and is located on a side wall of the first main line close to the first interface;

[0022] And / or, the main valve body also has a second interface, the second interface is connected to and communicated with a second main line, the second main line is used to communicate with the return air port of the compressor, and the HVAC outdoor unit assembly also includes a low-pressure sensor, which is installed on the second main line and located on the side wall of the second main line close to the second interface.

[0023] In some embodiments of the present application, the high-pressure sensor of the HVAC outdoor unit assembly is arranged below the four-way valve, and the low-pressure sensor of the HVAC outdoor unit assembly is arranged above the four-way valve.

[0024] In some embodiments of the present application, the HVAC outdoor unit assembly further includes a fourth valve control assembly, the HVAC outdoor unit assembly further includes an oil separator, the fourth valve control assembly is installed on the oil separator, and the fourth valve control assembly is used to be arranged on a fast oil return pipeline between the oil separator and the oil return port of the compressor;

[0025] And / or, the HVAC outdoor unit assembly further includes a seventh valve control assembly, the seventh valve control assembly is installed on the four-way valve, and the seventh valve control assembly is used to be arranged on a pressure relief pipeline connected to the exhaust port of the compressor;

[0026] And / or, the HVAC outdoor unit assembly further includes a fifth valve control assembly, the fifth valve control assembly is mounted on the four-way valve, and the fifth valve control assembly is used to be arranged on a bypass pipeline connected to the air supply pipeline of the compressor.

[0027] In some embodiments of the present application, the HVAC outdoor unit assembly also includes a adapter circuit board, which is used to be electrically connected to the electrical control box of the HVAC equipment. The adapter circuit board is installed on the four-way valve, and the adapter circuit board is electrically connected to the valve control assembly of the four-way valve.

[0028] In some embodiments of the present application, the HVAC outdoor unit assembly further includes a high-pressure sensor, the high-pressure sensor is used to detect the exhaust pressure between the first interface and the exhaust port of the compressor, and the high-pressure sensor is electrically connected to the adapter circuit board;

[0029] And / or, the HVAC outdoor unit assembly further includes a low pressure sensor, the low pressure sensor is used to detect the return air pressure between the four-way valve and the return air port of the compressor, and the low pressure sensor is electrically connected to the adapter circuit board;

[0030] The HVAC outdoor unit assembly further includes a fourth valve control assembly, the fourth valve control assembly is used to be arranged on the fast oil return pipeline between the oil separator and the oil return port of the compressor, and the fourth valve control assembly is electrically connected to the adapter circuit board;

[0031] And / or, the HVAC outdoor unit assembly further includes a seventh valve control assembly, the seventh valve control assembly is used to be arranged in a pressure relief pipeline connected to the exhaust port of the compressor, and the seventh valve control assembly is electrically connected to the adapter circuit board;

[0032] And / or, the HVAC outdoor unit assembly further includes a fifth valve control assembly, the fifth valve control assembly is used to be arranged on a bypass pipeline connected to the air supply pipeline of the compressor, and the fifth valve control assembly is electrically connected to the adapter circuit board.

[0033] The second aspect of the present application proposes a HVAC outdoor unit, including a shell, an outdoor heat exchanger, a compressor and a HVAC outdoor unit assembly proposed in the present application or any embodiment of the present application, wherein the bottom wall of the shell is at least partially configured as the support base; the outdoor heat exchanger is arranged in the shell; the compressor is arranged on the support base, the HVAC outdoor unit assembly, the four-way valve is installed in the shell, and the main valve body is also provided with a second interface, a third interface and a fourth interface, the first interface is connected to the exhaust port of the compressor, the second interface is connected to the return port of the compressor, the third interface is connected to the outdoor heat exchanger, and the fourth interface is used to communicate with the indoor heat exchanger.

[0034] The HVAC outdoor unit of the embodiment of the present application has the same beneficial effects as the HVAC outdoor unit assembly proposed in the present application or any embodiment of the present application.

[0035] The third aspect of the present application proposes a HVAC equipment, including a HVAC indoor unit and a HVAC outdoor unit proposed in the present application or any embodiment of the present application, the HVAC indoor unit includes an indoor heat exchanger, the indoor heat exchanger and the outdoor heat exchanger are connected in series through a refrigerant pipeline, and the indoor heat exchanger is connected to the fourth interface.

[0036] The HVAC equipment of the embodiment of the present application has the same beneficial effects as the HVAC outdoor unit assembly proposed in the present application or any embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0038] Figure 1 A system schematic diagram of the refrigeration process of the HVAC equipment proposed in some embodiments of the present application;

[0039] Figure 2 A system schematic diagram of a heating process of a HVAC device proposed in some embodiments of the present application;

[0040] Figure 3 A schematic diagram of a HVAC outdoor unit assembly proposed for some embodiments of the present application;

[0041] Figure 4 A partial structural schematic diagram of a HVAC outdoor unit assembly proposed in some embodiments of the present application;

[0042] Figure 5 A partial structural schematic diagram of another HVAC outdoor unit assembly proposed in some embodiments of the present application;

[0043] Figure 6 A schematic diagram of an oil separator and related structures of a HVAC outdoor unit assembly proposed in some embodiments of the present application;

[0044] Figure 7 A schematic diagram of a four-way valve and related structures of a HVAC outdoor unit assembly proposed in some embodiments of the present application;

[0045] Figure 8 for Figure 7 Schematic diagram from another perspective;

[0046] Fig. 9 A partial structural schematic diagram of a HVAC outdoor unit assembly proposed in some embodiments of the present application.

[0047] The reference numerals are as follows:

[0048] 10. HVAC outdoor unit;

[0049] 100, housing; 110, supporting base;

[0050] 200, four-way valve; 210, main valve body; 201, first interface; 202, second interface; 203, third interface; 204, fourth interface; 220, pilot valve;

[0051] 300, oil separator; 301, first oil separation outlet; 310, first top wall;

[0052] 400, gas-liquid separator; 401, first gas-liquid separation inlet; 410, second top wall;

[0053] 500. Compressor;

[0054] 600, outdoor heat exchanger; 610, outdoor fan;

[0055] 701, one-way valve; 702, high-pressure switch; 703, throttling assembly; 704, high-pressure sensor; 705, low-pressure sensor; 706, fourth valve control assembly; 707, seventh valve control assembly; 708, fifth valve control assembly; 710, transfer circuit board; 711, first stop valve; 712, second stop valve;

[0056] 810, first refrigerant pipeline; 811, first main pipeline; 812, branch pipeline; 820, second refrigerant pipeline; 821, second main pipeline; 841, return air pipe; 842, oil return pipeline; 843, quick oil return pipeline; 844, air supply pipeline; 845, bypass pipeline; 846, pressure relief pipeline; 847, first pipe fitting; 848, connecting pipe; 850, third refrigerant pipeline; 860, fourth refrigerant pipeline;

[0057] 900, wire;

[0058] 20. Indoor unit; 21. Indoor heat exchanger; 22. Indoor fan. DETAILED DESCRIPTION

[0059] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0060] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0061] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0062] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0063] The HVAC equipment can be used as a household air conditioner or as a central air conditioner. The air-conditioning unit of the HVAC equipment includes a HVAC indoor unit 20 and a HVAC outdoor unit 10. The HVAC indoor unit 20 is usually installed indoors, and the HVAC outdoor unit 10 is usually installed outdoors. The HVAC indoor unit 20 and the HVAC indoor unit 20 work together to realize the cooling, heating, dehumidification and air purification functions of the HVAC equipment to achieve comfortable air quality.

[0064] When the HVAC equipment is used as a central air conditioner, there is usually one HVAC outdoor unit 10, and the number of HVAC indoor units 20 can be multiple, and each HVAC indoor unit 20 is provided with one or more air outlets to discharge the refrigerated, heated, dehumidified or purified air into the room through the air outlets. An indoor heat exchanger 21 is usually provided in the HVAC indoor unit 20, and an outdoor heat exchanger 600 is usually provided in the HVAC outdoor unit 10. The indoor heat exchanger 21 and the outdoor heat exchanger 600 are usually connected through a refrigerant pipeline, so that the refrigerant between the indoor heat exchanger 21 and the outdoor heat exchanger 600 can flow.

[0065] During the cooling process of the HVAC equipment, the indoor heat exchanger 21 is an evaporator, and the refrigerant in the evaporator absorbs heat from liquid to gas. In the process of refrigerant evaporation and heat absorption, the evaporator exchanges heat with the air flowing through the evaporator, and takes away the heat in the air in the HVAC indoor unit 20, so that the air discharged from the HVAC indoor unit 20 is air that has released heat and cooled down, and the HVAC indoor unit 20 blows cold air. At the same time, the outdoor heat exchanger 600 is a condenser, and the refrigerant in the condenser changes from gas to liquid. In the process of refrigerant condensation and heat release, the condenser exchanges heat with the air in the HVAC outdoor unit 10 flowing through the condenser, so that the air in the HVAC outdoor unit 10 brings the heat of the condenser to the outside of the HVAC outdoor unit 10, thereby realizing the cooling process.

[0066] During the heating process of the HVAC equipment, the outdoor heat exchanger 600 is an evaporator, and the refrigerant in the evaporator absorbs heat from liquid to gas. In the process of refrigerant evaporation and heat absorption, the evaporator exchanges heat with the air flowing through the evaporator, and replaces the heat carried by the air in the HVAC outdoor unit 10 with the refrigerant in the evaporator. At the same time, the indoor heat exchanger 21 is a condenser, and the refrigerant in the condenser changes from gas to liquid. In the process of refrigerant condensation and heat release, the condenser exchanges heat with the air in the HVAC indoor unit 20 flowing through the condenser, so that the air in the HVAC indoor unit 20 takes away the heat carried by the condenser and discharges it from the HVAC indoor unit 20 to the room outside the HVAC indoor unit 20, so that the HVAC indoor unit 20 blows hot air, thereby realizing the heating process.

[0067] The HVAC equipment also includes a compressor 500, a throttling component (such as an electronic expansion valve), an oil separator 300, a gas-liquid separator 400, etc. In order to reduce indoor noise, the compressor 500, the throttling component, the oil separator 300, and the gas-liquid separator 400 can usually be arranged outdoors. The compressor 500, the throttling component, the oil separator 300, the gas-liquid separator 400 and the outdoor heat exchanger 600 and other components arranged outdoors can be collectively referred to as a HVAC outdoor unit 10. In the case where the HVAC equipment can both cool and heat, the HVAC equipment also includes parts such as a four-way valve 200 to realize the switching of the HVAC equipment between the cooling mode and the heating mode.

[0068] like Figure 1 and Figure 2 As shown, the four-way valve 200 has a first interface 201, a second interface 202, a third interface 203 and a fourth interface 204, wherein the first interface 201 is an exhaust port, the fourth interface 204 is an air return port, the exhaust port of the compressor 500 is connected to the oil separator 300, and the exhaust port of the oil separator 300 is connected to the first interface 201 of the four-way valve 200; the fourth interface 204 of the four-way valve 200 is connected to the inlet of the gas-liquid separator 400 through the second refrigerant pipeline 820, and the air outlet of the gas-liquid separator 400 is connected to the air return port of the compressor 500 through the air return pipe 841; the third interface 203 is connected to the outdoor heat exchanger 600 through the refrigerant pipeline, the outdoor heat exchanger 600 and the indoor heat exchanger 21 are connected in series through the refrigerant pipeline, the fourth interface 204 is connected to the indoor heat exchanger 21, and the electronic expansion valve is arranged on the refrigerant pipeline between the indoor heat exchanger 21 and the outdoor heat exchanger.

[0069] The four-way valve 200 has a first state and a second state, and can be switched between the first state and the second state. Figure 1As shown, in the first state, the first interface 201 is connected to the third interface 203 and the second interface 202 is connected to the fourth interface 204. After the refrigerant flows out from the exhaust port of the compressor 500, it flows into the third interface 203 from the first interface 201 of the four-way valve 200 after passing through the oil separator 300, and then flows through the outdoor heat exchanger 600, the electronic expansion valve and the indoor heat exchanger 21 in sequence, and then flows into the second interface 202 through the fourth interface 204, and then flows back to the gas-liquid splitter, and then flows back to the compressor 500 through the gas-liquid splitter. In this state, the HVAC equipment provides cooling for the room, the indoor heat exchanger 21 is an evaporator, and the outdoor heat exchanger 600 is a condenser. Figure 2 As shown, in the second state, the first interface 201 is connected with the fourth interface 204 and the second interface 202 is connected with the third interface 203. After the refrigerant flows out from the exhaust port of the compressor 500, it flows into the fourth interface 204 from the first interface 201 of the four-way valve 200 after passing through the oil separator 300, and then flows through the indoor heat exchanger 21, the electronic expansion valve and the outdoor heat exchanger 600 in sequence, and then flows into the second interface 202 through the third interface 203, and then flows back to the gas-liquid diverter, and then flows back to the compressor 500 through the gas-liquid diverter. In this state, the HVAC equipment provides heating (i.e., heating) for the indoor room, the indoor heat exchanger 21 is a condenser, and the outdoor heat exchanger 600 is an evaporator.

[0070] It should be noted that Figure 1 and Figure 2 The arrow direction indicates the flow direction of the refrigerant.

[0071] In some embodiments, the four-way valve 200 includes a main valve body 210 and a pilot valve 220 (also called a pilot slide valve). A valve core is arranged in the main valve body 210. The first interface 201, the second interface 202, the third interface 203 and the fourth interface 204 are all arranged on the main valve body 210. The pilot valve 220 is used to control the state of the four-way valve 200. Specifically, the pilot valve 220 can drive the valve core to move in the main valve body 210 so that the main valve body 210 switches between the first state and the second state.

[0072] The HVAC equipment may be a structure in which the HVAC outdoor unit 10 and the HVAC indoor unit 20 are separately arranged, or it may be an integrated structure of indoor and outdoor units. In the case where the HVAC equipment is an integrated structure of indoor and outdoor units, the entire HVAC equipment may be arranged outdoors.

[0073] The HVAC outdoor unit 10 may also have a housing 100, and outdoor components such as an outdoor heat exchanger 600, a compressor 500, a throttling component, an oil separator 300, and a gas-liquid separator 400 may be arranged in the housing 100, and the housing 100 may be provided with an air inlet and outlet for air flow. The HVAC outdoor unit 10 may also have an outdoor fan 610, and the outdoor fan 610 is arranged corresponding to the outdoor heat exchanger 600, and is used to guide the air flow to flow quickly through the outdoor heat exchanger 600. The HVAC indoor and outdoor units may also have a housing, and outdoor components such as an indoor heat exchanger 21 may be arranged in the housing, and the housing may be provided with an air inlet and outlet for air flow. The HVAC indoor unit 20 may also have an indoor fan 22, and the indoor fan 22 is arranged corresponding to the indoor heat exchanger 21, and is used to guide the air flow to flow quickly through the indoor heat exchanger 21.

[0074] The HVAC equipment may also include a gateway for communicating with the outside world, which may receive external commands, requests, and other control target parameters. Furthermore, the HVAC equipment may also have sensors for detecting the indoor environment, such as temperature sensors, humidity sensors, and air conditioning quality sensors. The HVAC equipment may also have sensors for detecting the outdoor environment, such as temperature sensors, humidity sensors, and air conditioning quality sensors.

[0075] In the existing conventional technology, when assembling and arranging the four-way valve of the HVAC equipment, the first interface of the four-way valve is set on the upper side of the four-way valve, and the second interface, the third interface and the fourth interface are set on the lower side of the four-way valve. However, the installation height of the oil separator, the compressor, etc. is usually lower than the four-way valve. In this way, the refrigerant pipeline connected to the first interface of the four-way valve needs to be extended upward for a part, and then bent downward to the bottom of the four-way valve before it can be connected to the exhaust port of the oil separator. The refrigerant pipeline between the first interface and the gas-liquid separator has many bends, which not only increases the complexity of the equipment, but also increases the difficulty of installation and maintenance. The complexity of the pipeline also extends the refrigerant flow path, which is prone to the problem of poor refrigerant (refrigerant) flow, affecting the operating efficiency of the equipment.

[0076] In order to alleviate the problem that the refrigerant pipeline connected to the four-way valve has many bends, the pipeline layout is complex, the refrigerant flow path is long, resulting in poor refrigerant (refrigerant) flow and affecting the operating efficiency of the equipment, an embodiment of the present application proposes a HVAC outdoor unit assembly.

[0077] The HVAC outdoor unit assembly of this embodiment includes a support base 110 and a four-way valve 200. The four-way valve 200 is arranged above the support base 110, and the support base 110 and the four-way valve 200 can be arranged at intervals. The main valve body 210 of the four-way valve 200 has a first interface 201, and the first interface 201 is used to communicate with the exhaust port of the compressor 500, and the first interface 201 is arranged on the bottom side of the main valve body 210.

[0078] The first interface 201 is the exhaust port of the four-way valve 200, which is used to connect to the exhaust port of the compressor 500. Specifically, the first interface 201 can be connected to the exhaust port of the compressor 500 through the oil separator 300 and the refrigerant pipeline, wherein the pipeline between the first interface 201 and the oil separator 300 is defined as the first refrigerant pipeline 810.

[0079] The support base 110 is a support structure of the HVAC outdoor unit assembly, which may be the bottom wall of the housing 100 of the HVAC outdoor unit 10. The support base 110 is used to support and install various components of the HVAC outdoor unit 10. The bottom side of the main valve body 210 refers to the side of the main valve body 210 facing the support base 110.

[0080] It should be noted that the limitations on specific orientations such as direction, up and down, top and bottom in this embodiment are all based on the limitations when the HVAC outdoor unit 10 is in normal use. When the HVAC outdoor unit 10 is in normal use, the support base 110 is usually arranged roughly horizontally.

[0081] The first interface 201 is arranged on the bottom side of the main valve body 210. This design overcomes the technical prejudice of the four-way valve arrangement of conventional HVAC equipment. The first interface 201 can be directly connected to the refrigerant pipeline at the bottom to communicate with the exhaust port of the compressor 500. Specifically, the first interface 201 can be connected to the exhaust port of the oil separator 300 through the first refrigerant pipeline 810, so as to communicate with the exhaust port of the compressor 500 through the oil separator 300. The first refrigerant pipeline 810 can be directly arranged downward from the first interface 201. Compared with the prior art, the first refrigerant pipeline 810 does not need to extend upward and then bend downward, which simplifies the pipeline layout, facilitates the assembly and maintenance of the equipment, and shortens the exhaust path between the compressor 500 and the four-way valve 200, thereby improving the smoothness of the refrigerant flow and improving the efficiency of the HVAC equipment.

[0082] Optionally, the first refrigerant pipeline 810 may be integrated and fixed on the four-way valve 200 .

[0083] According to some embodiments of the present application, in some implementations, such as Figures 1 to 6 As shown, the HVAC outdoor unit assembly also includes an oil separator 300, which is disposed on the support base 110. The oil separator 300 is configured to connect the exhaust port of the compressor 500 with the first interface 201. The oil separator 300 has a first oil separator outlet 301 connected to and communicated with the first interface 201. In the vertical direction, the first oil separator outlet 301 is located below the first interface 201.

[0084] The vertical direction may be understood as referring to a direction perpendicular to the support base 110 , or an arrangement direction of the four-way valve 200 and the support base 110 .

[0085] The oil separator 300 is used to separate the lubricating oil from the high-pressure steam discharged from the compressor 500 to ensure the efficient and safe operation of the system. The first oil separation outlet 301 is also the exhaust port of the oil separator 300. After the refrigerant and lubricating oil mixture flowing out of the compressor 500 flows into the oil separator 300, the oil separator 300 separates the refrigerant from the lubricating oil, wherein the separated refrigerant is discharged to the four-way valve 200 through the first oil separation outlet 301 and the first refrigerant pipeline 810, and the lubricating oil can flow back into the compressor 500 through the return oil pipeline 842.

[0086] The first oil outlet 301 may be located on the top wall of the oil separator 300 (refer to the first top wall 310), or may be disposed on the top of the side wall of the oil separator 300. The first oil outlet 301 may be located directly below the first interface 201, or may be located below the side of the first interface 201.

[0087] By setting the setting height of the first oil outlet 301 to be lower than the setting height of the first interface 201, the first interface 201 can be directly connected to the first refrigerant pipeline 810 extending downward and communicate with the first oil outlet 301. The first refrigerant pipeline 810 does not need to extend upward and then bend downward, which simplifies the pipeline layout, facilitates the assembly and maintenance of the equipment, and shortens the exhaust path between the compressor 500 and the four-way valve 200, thereby improving the smoothness of the refrigerant flow and improving the efficiency of the HVAC equipment.

[0088] According to some embodiments of the present application, optionally, Figures 3 to 5 As shown, in the vertical direction, the oil separator 300 is disposed below the four-way valve 200 .

[0089] That is, the oil separator 300 is entirely located below the four-way valve 200, and the four-way valve 200 and the oil separator 300 can be arranged vertically spaced apart. The oil separator 300 can be located directly below the four-way valve 200 or below the four-way valve 200.

[0090] For example, Figures 3 to 5 As shown, the oil separator 300 is spaced apart and arranged directly below the four-way valve 200, the bottom support of the oil separator 300 is installed on the support base 110, and the top wall of the oil separator 300 (refer to the first top wall 310) is provided with a first oil outlet 301, the first oil outlet 301 is located below the first interface 201, and is spaced apart from the bottom side of the four-way valve 200, and the first oil outlet 301 is arranged upward.

[0091] By setting the height of the oil separator 300 lower than the setting height of the four-way valve 200, the arrangement of the first refrigerant pipeline 810 is facilitated, thereby simplifying the pipeline arrangement. At the same time, the setting height of the oil separator 300 is lower than the setting height of the four-way valve 200, so that the first oil outlet 301 can be set at the top of the oil separator 300, so that the first refrigerant circuit can be docked with the first oil outlet 301 at the top, reducing the possibility of bending of the first refrigerant pipeline 810, facilitating the arrangement of the first refrigerant pipeline 810, thereby simplifying the pipeline arrangement, facilitating the assembly and maintenance of the equipment, and shortening the exhaust path between the compressor 500 and the four-way valve 200, improving the smoothness of the refrigerant flow, and improving the efficiency of the HVAC equipment.

[0092] According to some embodiments of the present application, optionally, Figures 3 to 5 As shown, combined with Figures 7 to 9 As shown, the first interface 201 is connected and communicated with the first oil outlet 301 through the first refrigerant pipeline 810 , and the first refrigerant pipeline 810 is configured to support the four-way valve 200 so as to fix the four-way valve 200 through the first refrigerant pipeline 810 .

[0093] The first refrigerant pipeline 810 can be a hard pipe with a certain support strength. The first refrigerant pipeline 810 is connected to the first oil outlet 301 of the gas-liquid separator 400, and the first oil outlet 301 provides support force to the first refrigerant pipeline 810, so that the first refrigerant pipeline 810 is fixedly arranged, and the first refrigerant pipeline 810 is connected to the first interface 201 of the four-way valve 200, and the first refrigerant pipeline 810 provides support force for the four-way valve 200.

[0094] The four-way valve 200 and the first refrigerant pipeline 810 are both supported and fixed on the oil separator 300, and the four-way valve 200 is suspended and fixed by the first supporting pipeline. The four-way valve 200 does not require any other additional fixed sheet metal, which simplifies the structure and reduces the complexity of component layout, which is conducive to improving assembly and maintenance efficiency and reducing production costs.

[0095] According to some embodiments of the present application, optionally, along the vertical direction, the setting height of any refrigerant flow downstream of the first refrigerant pipeline 810 is not lower than the setting height of the upstream connected to the downstream.

[0096] That is, the first refrigerant pipe 810 does not have a downwardly bent portion. Figures 3 to 5 , and combined Figures 7 to 9 As shown, along the refrigerant flow direction, the downstream of the first refrigerant pipeline 810 is not higher than the connected upstream. In the process of the refrigerant flowing from the oil separator 300 along the first refrigerant pipeline 810 to the four-way valve 200, the refrigerant can partially flow in the horizontal direction, and the rest flows from bottom to top.

[0097] In this embodiment, the first refrigerant pipeline 810 does not have a downwardly bent portion, which simplifies the pipeline layout and shortens the exhaust path between the compressor 500 and the four-way valve 200, thereby improving the smoothness of the refrigerant flow and enhancing the efficiency of the HVAC equipment.

[0098] Exemplarily, when a four-way valve 200 is connected to an oil separator 300, the first interface 201 and the first oil outlet 301 can be arranged opposite each other in the vertical direction, and the first refrigerant pipeline 810 can extend vertically in the vertical direction to connect and communicate the first interface 201 and the first oil outlet 301, and the first refrigerant pipeline 810 is supported and fixed by an oil separator 300.

[0099] For example, Figures 3 to 5 , and combined Figures 7 to 9 As shown, in the case where a four-way valve 200 is connected to multiple oil separators 300, the first refrigerant pipeline 810 may have a first main pipeline 811 and multiple branch pipelines 812, and each branch pipeline 812 may be connected to multiple oil separators 300. The first interface 201 is connected and communicated with the inlet of the first main pipeline 811, the first main pipeline 811 may extend vertically in the vertical direction, the outlet of the first main pipeline 811 may be connected to the outlet of each branch pipeline 812, each branch pipeline 812 is connected in parallel to the first main pipeline 811, and the inlet of each branch pipeline 812 is connected to multiple first oil outlets 301, and multiple branch pipelines 812 may be arranged obliquely or multiple branch pipelines 812 may be arranged in an arc shape, and the height of each branch pipeline 812 is gradually increased from the inlet to the outlet of the branch pipeline 812 itself. In this case, the first refrigerant pipeline 810 is supported and fixed by multiple oil separators 300, and each branch pipeline 812 can provide better support for the first main pipeline 811 and the four-way valve 200, thereby improving the setting stability of the first main pipeline 811 and the four-way valve 200.

[0100] Among them, the oil separators 300 can be set to two, three, four or more, and each oil separator 300 can be connected to a compressor 500 respectively, and the compressor 500 and the oil separator 300 can be set in a one-to-one correspondence; in some other implementations, a compressor 500 can also be connected to multiple oil separators 300. Each oil separator 300 can be installed side by side on the support base 110 and all are located below the four-way valve 200. Each oil separator 300 can be provided with a first oil outlet 301, and the oil separator 300, the first oil outlet 301 and the branch pipeline 812 can be set in a one-to-one correspondence. Figures 3 to 5 , and combined Figures 7 to 9As shown, when a four-way valve 200 is connected to two oil separators 300, the first oil outlets 301 of the two oil separators 300 can be arranged on both sides of the first interface 201 along the horizontal direction, and the two oil separators 300 can be symmetrically arranged around the axis of the first interface 201 of the four-way valve 200.

[0101] It should be noted that the branch pipeline 812 can also be set as a bent pipe. For example, the bent pipe includes a horizontal part and a vertical part connected to the horizontal part. The horizontal part can be connected and communicated between the first main pipeline 811 and the vertical part, and the vertical part is used to connect and communicate with the first oil outlet 301.

[0102] According to some embodiments of the present application, optionally, Figures 3 to 5 , and combined Figures 7 to 9 As shown, the main valve body 210 also has a second interface 202, a third interface 203 and a fourth interface 204, the second interface 202 is used to communicate with the air inlet of the compressor 500 (i.e., the air inlet of the compressor 500), the third interface 203 is used to communicate with the outdoor heat exchanger 600, and the fourth interface 204 is used to communicate with the indoor heat exchanger 21, and the four-way valve 200 is configured so that the first interface 201 can be switchably connected to one of the third interface 203 and the fourth interface 204 and the second interface 202 can be switchably connected to the other of the third interface 203 and the fourth interface 204, and at least one of the first interface 201, the second interface 202 and the third interface 203 is arranged on the top side of the four-way valve 200.

[0103] The top side of the four-way valve 200 refers to the side of the four-way valve 200 facing away from the support base 110 .

[0104] In some embodiments, the four-way valve 200 may be provided with a second port 202 on the top side.

[0105] Exemplarily, the HVAC outdoor unit assembly also includes a gas-liquid separator 400, which is disposed on the support base 110. The gas-liquid separator 400 is configured to connect the return air port of the compressor 500 with the second interface 202. The gas-liquid separator 400 has a first gas-liquid separation inlet 401 connected to the second interface 202. The first gas-liquid separation inlet 401 is disposed above the second interface 202, and the second interface 202 is opened on the top side of the four-way valve 200.

[0106] The bottom of the gas-liquid separator 400 can be mounted and fixed on the support base 110. The gas-liquid separator 400 can store part of the refrigerant in the system, and can separate the gaseous and liquid components in the refrigerant. In the HVAC equipment, the compressor 500 compresses the refrigerant into high-temperature and high-pressure steam, and then transports it to the condenser, where part of the refrigerant will condense into liquid, but part of it will remain in the gaseous state. The gas-liquid separator 400 can separate the refrigerant in these two states, ensuring that the liquid refrigerant enters the electronic expansion valve and the evaporator, while the gaseous refrigerant returns to the compressor 500. The gas-liquid separator 400 can effectively protect the compressor 500 and avoid damage caused by the refrigerant liquid directly entering the compressor 500.

[0107] The first gas-liquid separation inlet 401 is also the inlet of the gas-liquid separator 400 . The first gas-liquid separation inlet 401 can be set at the top of the side wall of the gas-liquid separator 400 , or can be set on the top wall of the gas-liquid separator 400 (refer to the second top wall 410 ).

[0108] The inlet of the gas-liquid separator 400 is usually set at a height higher than the four-way valve 200. In the prior art, the refrigerant pipeline connected to the second interface needs to first extend downward, then bend upward to the top of the four-way valve, and then be connected and communicated with the gas-liquid separator. The refrigerant pipeline between the second interface and the gas-liquid separator has many bends, resulting in a longer refrigerant flow path and a complex refrigerant pipeline layout. In this embodiment, a second interface 202 is set on the top side of the four-way valve 200. This design overcomes the technical prejudice of the arrangement of the four-way valve 200 in conventional HVAC equipment. The second interface 202 can be directly connected to the refrigerant pipeline at the top to communicate with the return air port of the compressor 500. Specifically, the second interface 202 can be connected to the inlet of the gas-liquid separator 400 through the second refrigerant pipeline 820 to communicate with the return air port of the compressor 500 through the gas-liquid separator 400. The second refrigerant pipeline 820 can be directly arranged upward from the second interface 202. Compared with the prior art, the second refrigerant pipeline 820 does not need to extend downward and then bend upward, which simplifies the pipeline arrangement, facilitates the assembly and maintenance of the equipment, shortens the return air path between the compressor 500 and the four-way valve 200, improves the smoothness of the refrigerant flow, and improves the efficiency of the HVAC equipment.

[0109] like Figure 5 As shown, in some embodiments, the first gas-liquid separation inlet 401 is disposed on the top wall (refer to the second top wall 410 ) of the gas-liquid separator 400 .

[0110] The second refrigerant pipeline 820 can be connected to the gas-liquid separator 400 from the top wall of the gas-liquid separator 400 (refer to the second top wall 410), and the second refrigerant pipeline 820 can be assembled and disassembled from the top side of the gas-liquid separator 400, which facilitates the assembly and maintenance of the second refrigerant pipeline 820 and the gas-liquid separator 400.

[0111] Exemplarily, the second refrigerant pipeline 820 includes a first pipe section, a second pipe section and a third pipe section which are connected end to end and communicated in sequence, the inlet of the first pipe section is connected and communicated with the second interface 202, and the outlet of the third pipe section is connected and communicated with the inlet of the first gas-liquid separation port, wherein the first pipe section extends vertically upward from the second interface 202 in the vertical direction, the second pipe section is arranged approximately horizontally, and the arrangement height of the second pipe section is slightly higher than the first gas-liquid separation inlet 401, and the third pipeline extends approximately in the vertical direction and is approximately vertically connected between the second pipe section and the first gas-liquid separation inlet 401.

[0112] In some embodiments, the four-way valve 200 may be provided with a third interface 203 on the top side. The third interface 203 is connected and communicated with the outdoor heat exchanger 600 through a third refrigerant pipeline 850, and the third refrigerant pipeline 850 may extend directly upward from the height where the third interface 203 is located.

[0113] The interface of the outdoor heat exchanger is usually set at a height higher than the four-way valve. In some technologies, the refrigerant pipeline connected to the third interface needs to extend downward first, then bend upward to the top of the four-way valve, and then connect and communicate with the outdoor heat exchanger. The refrigerant pipeline between the third interface and the outdoor heat exchanger has many bends, resulting in a longer refrigerant flow path and complex refrigerant pipeline layout. In this embodiment, a third interface 203 is set on the top side of the four-way valve 200. This design overcomes the technical prejudice of the arrangement of the four-way valve 200 of conventional HVAC equipment. The third interface 203 can be directly connected to the refrigerant pipeline at the top to communicate with the outdoor heat exchanger 600. Specifically, the third interface 203 can be connected to the outdoor heat exchanger 600 through the third refrigerant pipeline 850. The third refrigerant pipeline 850 can be directly arranged upward from the third interface 203. Compared with the prior art, the third refrigerant pipeline 850 does not need to extend downward and then bend upward, which simplifies the pipeline arrangement, facilitates the assembly and maintenance of the equipment, and shortens the exhaust path between the outdoor heat exchanger 600 and the four-way valve 200, thereby improving the smoothness of the refrigerant flow and improving the efficiency of the HVAC equipment.

[0114] Optionally, the fourth interface 204 may be disposed on the top side of the main valve body 210 , and the fourth interface 204 may be connected to a fourth refrigerant pipeline 860 , and the fourth refrigerant pipeline 860 is used to communicate with the indoor heat exchanger 21 .

[0115] The support base 110 is usually provided with many components. In the prior art, in order to avoid the components, even if the fourth interface is provided at the bottom side of the four-way valve, the refrigerant pipeline connected to the fourth interface will be bent upward (to avoid the space below the four-way valve and facilitate the assembly of other components), and then extended outward to be connected to the indoor heat exchanger. The fourth interface 204 of this embodiment is located on the top side, so that the part of the fourth refrigerant pipeline 860 close to the four-way valve 200 is located on the top side of the four-way valve 200, which can reduce the space occupied by the fourth refrigerant pipeline 860 below the four-way valve 200, facilitate the arrangement of the components on the support base 110, and because the fourth refrigerant pipeline 860 is less bent, the exhaust path between the four-way valve 200 and the indoor heat exchanger 21 can be shortened, thereby improving the smoothness of the refrigerant flow and improving the efficiency of the HVAC equipment.

[0116] In addition, it should be noted that the second refrigerant pipeline 820 and the third refrigerant pipeline 850 are located on the top side of the four-way valve 200, mainly occupying the space above the four-way valve 200, and can also better avoid the space below the four-way valve 200, thereby facilitating the arrangement of components on the support base 110.

[0117] According to some embodiments of the present application, optionally, Figures 3 to 5 , and combined Figures 7 to 9 As shown, the axial direction of the main valve body 210 intersects with the vertical direction, and the four interfaces of the main valve body 210 are all arranged on the circumferential side wall of the main valve body 210. One of the four interfaces of the main valve body 210 is arranged on the bottom side of the main valve body 210 and is configured as the first interface 201.

[0118] The other three interfaces of the four interfaces are respectively the fourth interface 204 , the third interface 203 and the second interface 202 of the four-way valve 200 .

[0119] Exemplarily, the main valve body 210 can be arranged roughly horizontally. The first interface 201 is located on the top side of the main valve body 210. The main valve body 210 can be directly opened by the valve body to form the first interface 201, or the top opening of the main valve body 210 can be integrally connected with a first connecting pipe, and the first connecting pipe forms the first interface 201. The fourth interface 204, the second interface 202 and the third interface 203 are respectively located on the bottom side of the main valve body 210, and the three can be arranged in sequence along the axial direction of the main valve body 210 at intervals, wherein the second interface 202 can be arranged vertically opposite to the first interface 201, and the fourth interface 204 and the third interface 203 are located on both sides of the second interface 202. The main valve body 210 can be directly opened on the valve body to form the fourth interface 204, the third interface 203 and the second interface 202. The main valve body 210 can also be a valve body with three openings on the bottom side respectively connected with the fourth connecting pipe, the third connecting pipe and the second connecting pipe. The fourth connecting pipe forms the fourth interface 204, the third connecting pipe forms the third interface 203, and the second connecting pipe forms the second interface 202.

[0120] A one-way valve 701 is also provided between the oil separator 300 and the first interface 201. The one-way valve 701 is used to make the refrigerant flowing out of the oil separator 300 flow to the four-way valve 200 in one direction, preventing the refrigerant from flowing back from the four-way valve 200 to the oil separator 300, thereby causing impact or damage to the compressor 500.

[0121] Optionally, the one-way valve 701 may be integrated into the first refrigerant pipeline 810 and located at one end of the first refrigerant pipeline 810 connected to the oil separator 300 .

[0122] Optionally, the one-way valve 701 may also be integrated in the oil separator 300. Specifically, the one-way valve 701 is connected between the first refrigerant pipeline 810 and the first oil outlet 301, and the one-way valve 701 may be fixedly mounted on the first oil outlet 301, so as to be integrated in the housing 100 of the oil separator 300. The one-way valve 701 is integrated in the oil separator 300, and the one-way valve 701 occupies less space, which is conducive to simplifying the structure. In addition, the oil separator 300 is usually heavier and has higher stability. The one-way valve 701 is integrated and fixed in the oil separator 300, which can reduce the influence of the vibration generated by the operation of the equipment on the one-way valve 701, and improve the reliability of the one-way valve 701.

[0123] The HVAC outdoor unit assembly may further include a high-pressure switch 702 , which is used to stop the compressor 500 when the exhaust pressure of the compressor 500 exceeds a preset threshold. The high-pressure switch 702 is installed on the housing 100 of the oil separator 300 .

[0124] The high-pressure switch 702 monitors the exhaust pressure of the system. When the exhaust pressure exceeds the set safety upper limit, the high-pressure switch 702 will automatically disconnect the circuit and stop the operation of the compressor 500 to prevent the system from being over-pressurized and to prevent the compressor 500 or other components from being damaged by excessive pressure.

[0125] For example, Figure 3 and Figure 4 As shown, the high-pressure switch 702 can be installed and fixed on the housing 100 of the oil separator 300, and the detection end of the high-pressure switch 702 can be built into the oil separator 300. The high-pressure switch 702 can detect the pressure in the oil separator 300 and use the pressure value as the exhaust pressure of the compressor 500 (i.e., the system).

[0126] For example, Figure 5 and Figure 6 As shown, the high-voltage switch 702 can also be installed on the oil separator 300 through a first pipe 847 with a certain supporting strength. The first pipe 847 is connected to the oil separator 300, and the detection end of the high-voltage switch 702 is connected to the first pipe 847.

[0127] The oil separator 300 is usually heavier and has higher stability. Integrating and fixing the high-pressure switch 702 on the oil separator 300 can reduce the impact of vibration generated by equipment operation on the high-pressure switch 702, thereby improving the high-pressure switch 702. In some embodiments, a high-pressure sensor 704 is provided on the first refrigerant pipeline 810. The high-pressure sensor 704 is used to detect the pressure of the first refrigerant pipeline 810, that is, the pressure on the high-pressure side of the compressor 500 (that is, the high-pressure side of the system).

[0128] For example, Figure 1 , Figure 2 As shown, combined with Figures 3 to 6 As shown, the high pressure sensor 704 may be disposed on the first refrigerant pipeline 810 between the one-way valve 701 and the first interface 201 .

[0129] Optionally, the high-pressure sensor 704 may be located at one end of the first refrigerant pipeline 810 that is docked with the first interface 201. Specifically, the first refrigerant pipeline 810 includes a first main pipeline 811 that is docked with the first interface 201. The first main pipeline 811 is vertically arranged at the lower side of the four-way valve 200. The first main pipeline 811 is fixedly connected to the first interface 201. The high-pressure sensor 704 is installed on the first main pipeline 811. Exemplarily, the high-pressure sensor 704 may be installed on the side wall of the first main pipeline 811 close to the first interface 201. The high-pressure sensor 704 is arranged close to the first interface 201, that is, the high-pressure sensor 704 is arranged close to the four-way valve 200. The four-way valve 200 may provide support for the high-pressure sensor 704, improve the convenience of component arrangement, and improve the operational stability and reliability of the high-pressure sensor 704.

[0130] In some embodiments, a low pressure sensor 705 is provided on the second refrigerant pipeline 820, and the low pressure sensor 705 is used to detect the pressure of the second refrigerant pipeline 820, that is, the pressure of the low pressure side of the compressor 500 (that is, the low pressure side of the system).

[0131] Optionally, the low pressure sensor 705 is located at one end of the second refrigerant pipeline 820 that is docked with the second interface 202. Specifically, in the present embodiment, the second refrigerant pipeline 820 includes a second main pipeline 821 docked with the second interface 202, the second main pipeline 821 is vertically arranged above the four-way valve 200, the second main pipeline 821 is fixedly connected to the second interface 202, and the low pressure sensor 705 is installed on the second main pipeline 821. Exemplarily, the low pressure sensor 705 can be installed on the side wall of the second main pipeline 821 close to the second interface 202.

[0132] The low pressure sensor 705 is arranged close to the second interface 202, that is, the low pressure sensor 705 is arranged close to the four-way valve 200. The four-way valve 200 can provide support for the low pressure sensor 705, improve the convenience of component layout, and improve the operating stability and reliability of the low pressure sensor 705.

[0133] like Figure 4 , Figures 7 to 9 As shown, the HVAC outdoor unit assembly may further include a fourth valve control assembly 706 , which is installed on the oil separator 300 , and is used to be arranged on the fast oil return pipeline 843 between the oil separator 300 and the oil return port of the compressor 500 .

[0134] like Figure 1 and Figure 2As shown, a quick oil return pipeline 843 is connected between the oil separator 300 and the oil return port of the compressor 500, and the fourth valve control component 706 (also called SV4 valve in HVAC equipment) is arranged on the quick oil return pipeline 843 to control the conduction or closing of the quick oil return pipeline 843. Among them, the return oil pipeline 842 and the quick oil return pipeline 843 are arranged in parallel. Under the normal use state of the HVAC equipment, the return oil pipeline 842 can transport the lubricating oil separated by the oil separator 300 back to the compressor 500; when the compressor 500 is started, stopped or the load changes, the fourth valve control component 706 can be opened to quickly transport the lubricating oil back to the compressor 500. The return oil pipeline 842 and the quick oil return pipeline 843 can be capillary pipelines.

[0135] For example, Figure 4 and Fig. 9 As shown, the fourth valve control component 706 can be supported and installed on the oil separator 300 by a first pipe fitting 847 having a certain strength and hardness. The first pipe fitting 847 can be arranged on the side wall of the oil separator 300 and connected to the oil separator 300. The first pipe fitting 847 is connected to the quick oil return pipeline 843 through the fourth valve control component 706.

[0136] Alternatively, if Figure 6 As shown, the first pipe fitting 847 can be used to set the high-pressure switch 702 and the fourth valve control assembly 706 at the same time. The first pipe fitting 847 is a three-way pipe, one of the ports of which is fixedly connected and communicated with the oil separator 300, another port is used to connect and fix the high-pressure switch 702, and the remaining port is used to fix the fourth valve control assembly 706.

[0137] The oil separator 300 is usually heavier and has higher stability. The fourth valve control component 706 is integrated and fixed to the oil separator 300. The fourth valve control component 706 does not need to be separately fixed with a structure, and can reduce the impact of vibrations generated by equipment operation on the fourth valve control component 706, thereby improving the reliability of the fourth valve control component 706. At the same time, the fourth valve control component 706 can be assembled with the oil separator 300 and then installed on the support base 110, which is easy to operate.

[0138] Optionally, the HVAC outdoor unit assembly also includes a seventh valve control assembly 707 (also called SV7 unloading valve in HVAC equipment), which is installed on the four-way valve 200. The seventh valve control assembly 707 is used to be set on a pressure relief pipe 846 connected to the exhaust port of the compressor 500.

[0139] like Figure 1 and Figure 2As shown, the pressure relief line 846 is connected between the first interface 201 of the four-way valve 200 and the gas outlet of the oil separator 300. Specifically, the inlet of the pressure relief line 846 can be connected to the refrigerant pipeline between the one-way valve 701 and the first interface 201, and the outlet of the pressure relief line 846 can be connected to the inlet of the gas-liquid separator 400. The seventh valve control component 707 is provided on the pressure relief line 846 and is used to control the conduction or disconnection of the pressure relief line 846.

[0140] When the pressure in the system exceeds the set safety threshold, the seventh valve control assembly 707 will open to release the pressure to prevent the system from malfunctioning or being damaged due to excessive pressure.

[0141] The seventh valve control component 707 can be arranged on the upper side of the four-way valve 200 and installed on the first main line 811, so that the seventh valve control component 707 installed on the four-way valve 200 through the first main line 811 has a connecting pipe 848, and the connecting pipe 848 is inserted into the first main line 811 and extends into the main valve body 210 to communicate with the first interface 201, so that the connecting pipe 848 can be connected with the high-pressure side of the compressor 500 (the high-pressure side of the system), and the connecting pipe 848 is also connected with the pressure relief line 846 through the seventh valve control component 707.

[0142] The seventh valve control component 707 is integrated and installed on the four-way valve 200. The seventh valve control component 707 does not need to be separately provided with a fixed structure, which saves space. The four-way valve 200 can provide support for the seventh valve control component 707, which can reduce the impact of the vibration generated by the operation of the equipment on the seventh valve control component 707, and improve the reliability of the seventh valve control component 707. At the same time, the seventh valve control component 707 can be assembled with the four-way valve 200 and then installed on the support base 110, which is easy to operate. In addition, the seventh valve control component 707 is arranged on the upper side (above, i.e., the top side) of the four-way valve 200, which can save space and reduce the mutual interference of components.

[0143] The HVAC outdoor unit assembly also includes a fifth valve control assembly 708 (also called an SV5 unloading valve in HVAC equipment). The fifth valve control assembly 708 is installed on the four-way valve 200. The fifth valve control assembly 708 is used to be set on a bypass line 845 connected to the air supply line 844 of the compressor 500.

[0144] like Figure 1 and Figure 2As shown, the HVAC equipment is provided with a bypass pipeline 845 and an air supply pipeline 844, one end of the air supply pipeline 844 can be connected between the electronic expansion valve and the indoor heat exchanger 21, specifically, the refrigerant pipeline between the electronic expansion valve and the indoor heat exchanger 21 can be provided with a first stop valve 711, one end of the air supply pipeline 844 can be connected and communicated with the refrigerant pipeline between the electronic expansion valve and the first stop valve 711, and the other end of the air supply pipeline 844 is communicated with the air supply port of the compressor 500. One end of the bypass pipeline 845 is communicated with the gas-liquid separator 400, specifically, the bypass pipeline 845 can be communicated with the gas-liquid separator 400 through the second main pipeline 821, and the other end of the bypass pipeline 845 is communicated with the air supply pipeline 844. The fifth valve control component 708 is provided in the bypass pipeline 845, and is used to control the bypass pipeline 845 to be turned on or off.

[0145] The air supply line 844 of the compressor 500 is usually connected to the air supply port of the compressor 500, and is used to input partially compressed refrigerant gas during the compression process to reduce the compression ratio of the compressor 500 and improve the compression efficiency and cooling / heating capacity. The bypass line 845 is mainly used for energy regulation in the system. The main function of the fifth valve control component 708 of the bypass line 845 is to prevent the low pressure of the system from being too low and the pressure ratio of the compressor 500 from being too large under certain conditions, such as low-temperature heating startup and defrosting, so as to ensure the reliability of the system and the safe operation of the compressor 500. In these cases, the fifth valve control component 708 will be opened within a certain period of time to increase the pressure on the low-pressure side.

[0146] The bypass line 845 can be connected to the gas-liquid separator 400 through the second main line 821. The fifth valve control component 708 can be installed on the side wall of the second main line 821 and connect the second main line 821 and the bypass line 845 so that the bypass line 845 is connected to the gas-liquid separator 400 through the second main line 821.

[0147] The fifth valve control component 708 is integrated and installed on the four-way valve 200. The fifth valve control component 708 does not need to be separately provided with a fixed structure, which saves space. The four-way valve 200 can provide support for the fifth valve control component 708, which can reduce the impact of the vibration generated by the operation of the equipment on the fifth valve control component 708, and improve the reliability of the fifth valve control component 708. At the same time, the fifth valve control component 708 can be assembled with the four-way valve 200 and then installed on the support base 110, which is easy to operate. In addition, the fifth valve control component 708 is arranged on the upper side (above, i.e., the top side) of the four-way valve 200, which can save space and reduce the mutual interference of components.

[0148] According to some embodiments of the present application, optionally, the HVAC outdoor unit assembly also includes a adapter circuit board 710, which is used to be electrically connected to the electrical control box of the HVAC equipment. The adapter circuit board 710 is installed on the four-way valve 200, and the adapter circuit board 710 is electrically connected to the valve control assembly of the four-way valve 200.

[0149] The adapter circuit board 710 is integrated on the four-way valve 200, and the related wires 900 of the four-way valve 200 can be centrally arranged. The communication signal can communicate with the outside world through the wires 900 of the adapter circuit board 710, which reduces the complexity of the arrangement of the wires 900 and is conducive to simplifying the arrangement of components.

[0150] According to some embodiments of the present application, optionally, the high voltage sensor 704 may be electrically connected to the adapter circuit board 710 .

[0151] According to some embodiments of the present application, the low pressure sensor 705 may be electrically connected to the adapter circuit board 710.

[0152] According to some embodiments of the present application, optionally, the seventh valve control component 707 can be electrically connected to the adapter circuit board 710 .

[0153] According to some embodiments of the present application, optionally, the fifth valve control component 708 can be electrically connected to the adapter circuit board 710 .

[0154] The high-pressure sensor 704, the low-pressure sensor 705, the seventh valve-controlled component 707, and the fifth valve-controlled component 708 are electrically connected to the adapter circuit board 710. These components can communicate with the electric control box through the adapter circuit board 710, thereby improving the communication reliability. Moreover, when the high-pressure sensor 704, the low-pressure sensor 705, the seventh valve-controlled component 707, and the fifth valve-controlled component 708 are all configured to transmit signals through the wires 900, these wires 900 can all be connected to the adapter circuit board 710, and then communicate with the electric control box through the adapter circuit board 710, thereby reducing the complexity of the arrangement of the wires 900 and helping to simplify the arrangement of the components.

[0155] According to some embodiments of the present application, optionally, the fourth valve control component 706 may be electrically connected to the adapter circuit board 710 .

[0156] In some embodiments, optionally, the throttling assembly 703 (ie, the electronic expansion valve) of the HVAC outdoor unit assembly can be fixed to the support base 110 by a fixing member.

[0157] The throttling component 703 may be an electronic expansion valve, which may be arranged on the refrigerant pipeline between the outdoor heat exchanger 600 and the indoor heat exchanger 21. The electronic expansion valve may throttle and reduce the pressure of the high-temperature and high-pressure liquid refrigerant coming out of the condenser, and convert it into a low-temperature and low-pressure vapor-liquid mixture, so that it is easy to evaporate and absorb heat in the evaporator. The electronic expansion valve may also automatically adjust the refrigerant (coolant) flow rate entering the evaporator according to the change of the heat load of the evaporator to meet different refrigeration requirements.

[0158] Integrating and fixing the throttling component 703 (electronic expansion valve) on the supporting base 110 can reduce the influence of the vibration generated by the operation of the equipment on the throttling component 703 and improve the reliability of the throttling component 703.

[0159] In some embodiments, optionally, the HVAC outdoor unit assembly may further include a second stop valve 712 , and the second stop valve 712 is disposed on the fourth refrigerant pipeline 860 .

[0160] This embodiment also provides a HVAC outdoor unit 10, including a housing 100, an outdoor heat exchanger 600, a compressor 500, and a HVAC outdoor unit assembly proposed in this application or any embodiment of this application. The bottom wall of the housing 100 is at least partially configured as a support base 110; the outdoor heat exchanger 600 is disposed in the housing 100, and the compressor 500 is disposed on the support base 110 and is located in the housing 100; the four-way valve 200 is installed in the housing 100, and the main valve body 210 is also provided with a second interface 202, a third interface 203 and a fourth interface 204, the first interface 201 is connected to the exhaust port of the compressor 500, the second interface 202 is connected to the return air port of the compressor 500, the third interface 203 is connected to the outdoor heat exchanger 600, and the fourth interface 204 is used to communicate with the indoor heat exchanger 21.

[0161] The HVAC outdoor unit 10 of the present application has the same beneficial effects as the HVAC outdoor unit assembly proposed in the present application or any embodiment of the present application.

[0162] This embodiment also provides a HVAC equipment, including a HVAC indoor unit 20 and a HVAC outdoor unit 10 proposed in this application or any embodiment of this application, the HVAC indoor unit 20 includes an indoor heat exchanger 21, the indoor heat exchanger 21 and the outdoor heat exchanger 600 are connected in series through a refrigerant pipeline, and the indoor heat exchanger 21 is connected to the fourth interface 204.

[0163] The HVAC equipment of this embodiment has the same beneficial effects as the HVAC outdoor unit assembly proposed in this application or any embodiment of this application.

[0164] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A HVAC outdoor unit assembly, characterized in that: include: A support base (110); A four-way valve (200) is arranged above the support base (110) and is spaced apart from the support base (110). The four-way valve (200) comprises a main valve body (210). The main valve body (210) has a first interface (201). The first interface (201) is used to communicate with the exhaust port of a compressor (500) of a HVAC device. The first interface (201) is arranged on the bottom side of the main valve body (210).

2. The HVAC outdoor unit assembly according to claim 1, characterized in that: The HVAC outdoor unit assembly further comprises an oil separator (300), the oil separator (300) being arranged on the supporting base (110), the oil separator (300) being configured to connect the exhaust port of the compressor (500) with the first interface (201), the oil separator (300) having a first oil separation outlet (301) connected to and communicating with the first interface (201), and the first oil separation outlet (301) being located below the first interface (201) in the vertical direction.

3. The HVAC outdoor unit assembly according to claim 2, characterized in that: In the vertical direction, the oil separator (300) is disposed below the four-way valve (200).

4. The HVAC outdoor unit assembly according to claim 3, characterized in that: The first oil separation outlet (301) is arranged on the top wall of the oil separator (300).

5. The HVAC outdoor unit assembly according to claim 2, characterized in that: The first oil outlet (301) is connected and communicated with the first interface (201) via a first refrigerant pipeline (810), and the first refrigerant pipeline (810) is configured to support the four-way valve (200) so that the four-way valve (200) is fixed.

6. The HVAC outdoor unit assembly according to claim 5, characterized in that: Along the vertical direction, the setting height of any downstream part of the first refrigerant pipeline (810) where the refrigerant flows is not lower than the setting height of the upstream part connected to the downstream part.

7. The HVAC outdoor unit assembly according to claim 5, characterized in that: The oil separator (300) is arranged in plurality, and the plurality of oil separators (300) are arranged side by side on the support base (110); the first refrigerant pipeline (810) includes a first main pipeline (811) and a plurality of branch pipelines (812); the first oil separation outlets (301) of the plurality of oil separators (300) are respectively connected and communicated with the inlets of the plurality of branch pipelines (812) in a one-to-one correspondence; the outlets of the plurality of branch pipelines (812) are connected in parallel to the first main pipeline (811); and the outlet of the first main pipeline (811) is connected and communicated with the first interface (201).

8. The HVAC outdoor unit assembly according to claim 1, characterized in that: The main valve body (210) further comprises a second interface (202), a third interface (203) and a fourth interface (204); the second interface (202) is used to communicate with the return air port of the compressor (500); the third interface (203) is used to communicate with the outdoor heat exchanger (600); the fourth interface (204) is used to communicate with the indoor heat exchanger (901); the four-way valve (200) is configured such that the first interface (201) can be switchably connected to one of the third interface (203) and the fourth interface (204) and the second interface (202) can be switchably connected to the other of the third interface (203) and the fourth interface (204); at least one of the first interface (201), the second interface (202) and the third interface (203) is arranged on the top side of the four-way valve (200).

9. The HVAC outdoor unit assembly according to claim 8, characterized in that: The HVAC outdoor unit assembly also includes a gas-liquid separator (400), which is arranged on the support base (110), and the gas-liquid separator (400) is configured to connect the return air port of the compressor (500) and the second interface (202), and the gas-liquid separator (400) has a first gas-liquid separation inlet (401) connected to the second interface (202), and the first gas-liquid separation inlet (401) is arranged above the second interface (202), and the second interface (202) is arranged on the top side of the four-way valve (200).

10. The HVAC outdoor unit assembly according to claim 9, characterized in that: The first gas-liquid separation inlet (401) is arranged on the top wall of the gas-liquid separator (400).

11. The HVAC outdoor unit assembly according to any one of claims 1 to 10, characterized in that: The axial direction of the main valve body (210) intersects with the vertical direction, and the four interfaces of the main valve body (210) are all arranged on the circumferential side wall of the main valve body (210). One of the four interfaces of the main valve body (210) is arranged on the bottom side of the main valve body (210) and is configured as the first interface (201).

12. The HVAC outdoor unit assembly according to any one of claims 5 to 7, characterized in that: The HVAC outdoor unit assembly is also provided with a one-way valve (701), which is connected between the first oil separator outlet and the first refrigerant pipeline (810), and the one-way valve (701) is integrated into the shell of the oil separator (300) through the first oil separator outlet.

13. The HVAC outdoor unit assembly according to any one of claims 2 to 7, characterized in that: The HVAC outdoor unit assembly also includes a high-pressure switch (702), which is used to stop the compressor (500) when the exhaust pressure of the compressor (500) exceeds a preset threshold value. The high-pressure switch (702) is installed on the housing (100) of the oil separator (300).

14. The HVAC outdoor unit assembly according to any one of claims 1 to 10, characterized in that: The first interface (201) is connected to and communicates with a first main pipeline (811), the first main pipeline (811) being used to communicate with an exhaust port of the compressor (500), the HVAC outdoor unit assembly further comprising a high-pressure sensor (704), the high-pressure sensor (704) being installed on the first main pipeline (811) and located on a side wall of the first main pipeline (811) close to the first interface (201); And / or, the main valve body (210) further has a second interface (202), the second interface (202) is connected to and communicated with a second main line (821), the second main line (821) is used to communicate with the return air port of the compressor (500), and the HVAC outdoor unit assembly also includes a low pressure sensor (705), the low pressure sensor (705) is installed on the second main line (821), and is located on the side wall of the second main line (821) close to the second interface (202).

15. The HVAC outdoor unit assembly according to claim 14, characterized in that: The high-pressure sensor (704) of the HVAC outdoor unit assembly is arranged below the four-way valve (200), and the low-pressure sensor (705) of the HVAC outdoor unit assembly is arranged above the four-way valve (200).

16. The HVAC outdoor unit assembly according to any one of claims 1 to 10, characterized in that: The HVAC outdoor unit assembly further comprises a fourth valve control assembly (706), the HVAC outdoor unit assembly further comprises an oil separator (300), the fourth valve control assembly (706) is installed on the oil separator (300), and the fourth valve control assembly (706) is used to be arranged on a fast oil return pipeline (743) between the oil separator (300) and the oil return port of the compressor (500); And / or, the HVAC outdoor unit assembly further comprises a seventh valve control assembly (707), the seventh valve control assembly (707) being mounted on the four-way valve (200), the seventh valve control assembly (707) being used to be arranged on a pressure relief pipeline connected to an exhaust port of the compressor; And / or, the HVAC outdoor unit component also includes a fifth valve control component (708), the fifth valve control component (708) is installed on the four-way valve (200), and the fifth valve control component (708) is used to be set on a bypass pipeline (845) connected to the air supply pipeline (844) of the compressor (500).

17. The HVAC outdoor unit assembly according to any one of claims 1 to 10, characterized in that: The HVAC outdoor unit assembly further comprises a switching circuit board (710), wherein the switching circuit board (710) is used to be electrically connected to an electrical control box of the HVAC equipment, wherein the switching circuit board (710) is mounted on the four-way valve (200), and wherein the switching circuit board (710) is electrically connected to a valve control assembly of the four-way valve (200).

18. The HVAC outdoor unit assembly according to claim 17, characterized in that: The HVAC outdoor unit assembly further comprises a high-pressure sensor (704), the high-pressure sensor (704) being used to detect the exhaust pressure between the first interface (201) and the exhaust port of the compressor (500), the high-pressure sensor (704) being electrically connected to the adapter circuit board (710); And / or, the HVAC outdoor unit assembly further comprises a low pressure sensor (705), the low pressure sensor (705) is used to detect the return air pressure between the four-way valve (200) and the return air port of the compressor (500), and the low pressure sensor (705) is electrically connected to the adapter circuit board (710); The HVAC outdoor unit assembly further comprises a fourth valve control assembly (706), the fourth valve control assembly being used to be arranged on a fast oil return pipeline (843) between the oil separator (300) and the oil return port of the compressor (500), and the fourth valve control assembly (706) being electrically connected to the adapter circuit board (710); And / or, the HVAC outdoor unit assembly further comprises a seventh valve control assembly (707), the seventh valve control assembly (707) being used to be arranged on a pressure relief pipeline (846) communicating with an exhaust port of the compressor (500), and the seventh valve control assembly (707) being electrically connected to the adapter circuit board (710); And / or, the HVAC outdoor unit component also includes a fifth valve control component (708), and the fifth valve control component (708) is used to be arranged on a bypass pipeline (845) connected to the air supply pipeline (844) of the compressor (500), and the fifth valve control component (708) is electrically connected to the adapter circuit board (710).

19. A HVAC outdoor unit, characterized in that: include: A housing (100), wherein at least a portion of a bottom wall of the housing (100) is configured as the support base (110); An outdoor heat exchanger (600) is disposed in the housing (100); A compressor (500) is arranged on the supporting base (110); The HVAC outdoor unit assembly according to any one of claims 1 to 18, wherein the four-way valve (200) is installed in the shell (100), and the main valve body (210) is also provided with a second interface (202), a third interface (203) and a fourth interface (204), the first interface (201) is connected to the exhaust port of the compressor (500), the second interface (202) is connected to the return air port of the compressor (500), the third interface (203) is connected to the outdoor heat exchanger (600), and the fourth interface (204) is used to communicate with the indoor heat exchanger (901).

20. A HVAC equipment, characterized in that: It comprises a HVAC indoor unit and a HVAC outdoor unit as described in claim 19, wherein the HVAC indoor unit comprises an indoor heat exchanger (901), the indoor heat exchanger (901) and the outdoor heat exchanger (600) are connected in series via a refrigerant pipeline, and the indoor heat exchanger (901) is connected to the fourth interface (204).

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