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

Abstract

The invention belongs to the technical field of heating and ventilation equipment, and particularly relates to an outdoor unit assembly, a heating and ventilation equipment outdoor unit and heating and ventilation equipment. The outdoor unit assembly is used for the heating and ventilation equipment and comprises a refrigerant system, a heat exchange system and a heat exchange system, the tank body is communicated with the compressor exhaust port or the compressor air return port through a refrigerant pipeline; and the at least one functional part is mounted on the tank body and comprises at least one of a pressure sensor, a temperature sensor, a pressure switch and a valve body. According to the technical scheme, the at least one functional component is integrally arranged on the tank body, and one or more functions are achieved, so that the size of the outdoor unit assembly can be reduced, the use amount of pipelines of the outdoor unit assembly can be reduced, and therefore the cost can be reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of HVAC equipment, and specifically relates to an outdoor unit component, a HVAC outdoor unit and HVAC equipment. Background Art

[0002] At present, the outdoor unit components of HVAC equipment include key refrigeration parts and refrigerant piping systems. Among them, there are many types of key refrigeration parts, such as compressors, oil separators, gas-liquid separators, various valves and heat exchangers, which are connected by piping. However, after these scattered refrigeration parts are connected by piping, there are problems such as occupying a large space and wasting materials. Summary of the invention

[0003] The purpose of this application is to at least solve the problem that the outdoor unit components of the HVAC equipment occupy a large space and waste materials. This purpose is achieved by the following methods:

[0004] The first aspect of the present application proposes an outdoor unit assembly for use in HVAC equipment, the outdoor unit assembly comprising: a refrigerant system, including a compressor, the compressor having a compressor exhaust port and a compressor return port; a tank body, the tank body being connected to the compressor exhaust port or the compressor return port through a refrigerant pipeline; at least one functional component installed on the tank body, the at least one functional component comprising at least one of a temperature sensor, a pressure sensor, a pressure switch and a valve body.

[0005] According to the outdoor unit assembly provided by the present application, by integrating and installing at least one functional component on the tank body, the at least one functional component can be at least one of a temperature sensor, a pressure sensor, a pressure switch and a valve body, thereby reducing the occupied and layout space of the at least one functional component in the entire outdoor unit assembly, and saving the external connecting pipelines required for connecting the functional components, reducing the use of pipelines, reducing costs, and at the same time, facilitating later maintenance and management, and can improve the installation efficiency of the entire outdoor unit assembly.

[0006] In addition, the outdoor unit assembly according to the present application may also have the following additional technical features:

[0007] In some embodiments of the present application, the functional component is a pressure sensor and / or a temperature sensor, the pressure sensor and / or the temperature sensor is installed on the outer wall of the tank body, and the tank body is connected to the compressor exhaust port through a refrigerant pipeline.

[0008] In some embodiments of the present application, the functional component is a pressure switch, which is installed on the outer wall of the tank body. The tank body is connected to the compressor exhaust port through a refrigerant pipeline, and the pressure switch is used to stop the compressor when the exhaust pressure of the compressor exceeds a preset threshold.

[0009] In some embodiments of the present application, the tank body is an oil separator, the oil separator has an air inlet, an air outlet and an oil return port, the air inlet is configured to be connected to the compressor exhaust port through a first refrigerant pipeline, and the oil return port is connected to the compressor return port via a first oil return capillary.

[0010] In some embodiments of the present application, the functional component is a valve body, the valve body includes an electric valve, and the outdoor unit assembly also includes a second oil return capillary, which is respectively connected to the oil separator and the compressor return air port; wherein the second oil return capillary is provided with the functional component for connecting or disconnecting the second oil return capillary.

[0011] In some embodiments of the present application, the outdoor unit assembly further includes an air outlet pipe, which is communicated with the air outlet and extends into the interior of the oil separator.

[0012] In some embodiments of the present application, the functional component is a valve body, the valve body also includes a one-way valve, the one-way valve is arranged between the air outlet and the first refrigerant pipeline, and the one-way valve is configured to conduct one-way from the inside to the outside of the oil separator.

[0013] In some embodiments of the present application, the top wall of the oil separator is provided with the air outlet, the side wall of the oil separator is provided with an air inlet and a functional opening, and the oil separator also includes a multi-way joint, the multi-way joint includes a main pipe and a plurality of branch pipes connected to the main pipe, the main pipe is connected to the functional opening, and at least one of the plurality of branch pipes is connected to at least one of the functional components.

[0014] In some embodiments of the present application, the multiple functional components include a first functional component, a first branch pipe among the multiple branch pipes is connected to the first functional component, the first functional component is a pressure sensor or a temperature sensor, a second branch pipe among the multiple branch pipes is connected to a first oil return capillary, and the first oil return capillary is connected to the compressor return air port.

[0015] In some embodiments of the present application, a third branch pipe among the multiple branch pipes is connected to the second oil return capillary, one end of the second oil return capillary is connected to the third branch pipe, and the other end is connected to the compressor return air port, and the multiple functional components also include a second functional component, which is an electric valve, and the electric valve is arranged between the third branch pipe and the second oil return capillary, and is used to open or disconnect the second oil return capillary.

[0016] In some embodiments of the present application, the outdoor unit component also includes: a four-way valve, the four-way valve having a first interface, a second interface, a third interface and a fourth interface, the first interface is arranged toward the oil separator and is connected to the oil separator, the second interface is used to communicate with the compressor return air port, 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.

[0017] In some embodiments of the present application, the tank body is a gas-liquid separator, and the gas-liquid separator is connected to the compressor return port through a second refrigerant pipeline.

[0018] In some embodiments of the present application, at least one of the functional components includes a pressure sensor, and the pressure sensor is installed on the outer wall of the gas-liquid separator.

[0019] In some embodiments of the present application, there are multiple compressors and multiple oil separators, and the multiple oil separators are respectively connected to multiple compressor exhaust ports. The refrigerant pipeline includes a refrigerant main pipeline and multiple refrigerant branch pipelines. The air outlets of the multiple oil separators are respectively connected and connected to the inlets of the multiple refrigerant branch pipelines one by one, and the outlets of the multiple refrigerant branch pipelines are connected in parallel to the refrigerant main pipeline, and the outlet of the refrigerant main pipeline is connected and connected to the first interface.

[0020] A second aspect of the present application proposes a HVAC outdoor unit, comprising: a housing having a support base; an outdoor unit component as described in any one of the embodiments of the first aspect, wherein the outdoor unit component is arranged on the support base.

[0021] The third aspect of the present application proposes a HVAC equipment, including a HVAC indoor unit; and a HVAC outdoor unit as described in the implementation manner of the second aspect, wherein the HVAC indoor unit is connected to the HVAC outdoor unit through a refrigerant pipeline.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0024] 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. In addition, the same reference numerals are used throughout the accompanying drawings to represent the same components. Among them:

[0025] Figure 1 A system schematic diagram of the refrigeration process of a HVAC device proposed in one embodiment of the present application;

[0026] Figure 2 A system schematic diagram of a heating process of a HVAC device proposed in one embodiment of the present application;

[0027] Figure 3 A system schematic diagram of a HVAC device proposed in another embodiment of the present application;

[0028] Figure 4 A partial structural schematic diagram of an outdoor unit assembly of a HVAC device proposed in one embodiment of the present application;

[0029] Figure 5 A schematic diagram of the structure of an oil separator proposed in some embodiments of the present application;

[0030] Figure 6 Another partial structural schematic diagram of an outdoor unit assembly of a HVAC device proposed in one embodiment of the present application;

[0031] Figure 7 This is a schematic diagram of the structure of the functional connector proposed in some embodiments of the present application;

[0032] Figure 8 A partial structural schematic diagram of an outdoor unit assembly of a HVAC device proposed in another embodiment of the present application;

[0033] in, Figure 1 and Figure 2 The arrows in the diagram indicate the flow direction of the refrigerant.

[0034] The reference numerals in the accompanying drawings represent the following:

[0035] 10. HVAC outdoor unit;

[0036] 100, housing; 110, supporting base;

[0037] 200, four-way valve; 201, first interface; 202, second interface; 203, third interface; 204, fourth interface;

[0038] 300, oil separator; 301, air outlet; 302, air inlet; 303, functional opening; 304, oil return port; 310, air outlet pipe; 320, air inlet pipe; 330, multi-way connector; 331, main pipe; 332, first branch pipe; 333, second branch pipe; 334, third branch pipe;

[0039] 400, gas-liquid separator; 401, first gas-liquid separation inlet; 410, top wall of gas-liquid separator;

[0040] 500. Compressor;

[0041] 600, outdoor heat exchanger; 610, outdoor fan;

[0042] 701, one-way valve; 702, pressure switch; 703, electronic expansion valve; 704, pressure sensor; 705, low pressure sensor; 706, electric valve; 707, first pressure relief valve; 708, second pressure relief valve; 710, adapter circuit board; 711, first stop valve; 712, second stop valve;

[0043] 810, first refrigerant pipeline; 811, refrigerant main pipeline; 812, refrigerant branch pipeline; 820, second refrigerant pipeline; 821, first oil return capillary tube; 822, second oil return capillary tube; 823, air supply pipeline; 824, bypass pipeline;

[0044] 20. HVAC indoor unit; 21. Indoor heat exchanger; 22. Indoor fan. DETAILED DESCRIPTION

[0045] 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.

[0046] 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 "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence 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.

[0047] 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.

[0048] 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 upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0049] The embodiment of the present application provides a HVAC device, which can be used as a device for cooling or heating in household air conditioners, central air conditioners, heat pump systems, multi-split systems, etc. The HVAC device 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 outdoor unit 20 work together to achieve the functions of cooling, heating, dehumidification, and air purification of the HVAC device, so as to achieve comfortable air quality.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] The HVAC equipment also includes a compressor 500, a throttling component (such as an electronic expansion valve 703), 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, 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 outdoor unit components. 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.

[0054] See also Figures 1 to 4 According to some embodiments of the present application, the present application proposes an outdoor unit assembly for HVAC equipment, the outdoor unit assembly comprising: a refrigerant system, a tank body and at least one functional component. The refrigerant system comprises a compressor 500, the compressor 500 has a compressor exhaust port and a compressor return port; the tank body is connected to the compressor exhaust port or the compressor return port through a refrigerant pipeline; at least one functional component is installed on the tank body, and the at least one functional component comprises at least one of a temperature sensor, a pressure sensor, a pressure switch 702 and a valve body.

[0055] Specifically, when the tank body is connected to the exhaust port of the compressor, the tank body may be an oil separator 300. When the tank body is connected to the air return port of the compressor, the tank body may be a gas-liquid separator 400.

[0056] Exemplarily, the valve body may be at least one of an electric valve 706 and a one-way valve 701 .

[0057] The outdoor unit assembly provided by the first aspect embodiment of the present application integrates at least one functional component on the tank body. The at least one functional component can be at least one of a temperature sensor, a pressure sensor 704, a pressure switch 702 and a valve body. This can reduce the space occupied and arranged by the at least one functional component in the entire outdoor unit assembly, save external connecting pipelines required for connecting the functional components, reduce the use of pipelines, and reduce costs. At the same time, it is convenient for later maintenance and management, and can improve the installation efficiency of the entire outdoor unit assembly.

[0058] According to some embodiments of the present application, the functional components are pressure sensors 704 and / or temperature sensors, which are installed on the outer wall of the tank body and connected to the compressor exhaust port. The tank body is connected to the compressor exhaust port through a refrigerant pipeline.

[0059] The pressure sensor 704 is used to detect the exhaust pressure of the compressor exhaust port. Specifically, the pressure sensor is a high pressure sensor.

[0060] The temperature sensor is used to detect the exhaust temperature at the compressor exhaust port.

[0061] By integrating at least one of the pressure sensor 704 and the temperature sensor on the outer wall of the tank body and connecting it to the exhaust port of the compressor, it is possible to detect the exhaust pressure of the compressor 500 in real time through the pressure sensor 704, or it is possible to detect the exhaust temperature of the compressor 500 through the temperature sensor, so as to judge the operating condition of the compressor 500 according to the exhaust pressure or the exhaust temperature.

[0062] According to some embodiments of the present application, the functional component is a pressure switch 702, which is installed on the outer wall of the tank body and is connected to the exhaust port of the compressor. The tank body is connected to the exhaust port of the compressor through a refrigerant pipeline. The pressure switch 702 is used to stop the compressor 500 when the exhaust pressure of the compressor 500 exceeds a preset threshold.

[0063] Illustratively, the pressure switch 702 is a high pressure switch.

[0064] The pressure switch 702 is used to be electrically connected to the electronic control system of the HVAC outdoor unit 10. When the pressure sensor 704 detects that the exhaust pressure of the compressor 500 is greater than a preset threshold, the pressure switch 702 can disconnect the power supply of the compressor 500, thereby stopping the compressor 500 from running, thereby improving the safety of the operation of the compressor 500.

[0065] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 According to some embodiments of the present application, the tank body is an oil separator 300, the oil separator 300 has an air inlet 302, an air outlet 301 and an oil return port 304, the air inlet 302 is configured to be connected to the compressor exhaust port through the first refrigerant pipeline 810, and the oil return port 304 is connected to the compressor return port via the first oil return capillary 821.

[0066] Specifically, one end of the first oil return capillary tube 821 is connected to the oil return port of the oil separator 300 , and the other end is connected to the air return port of the compressor.

[0067] After the refrigerant and lubricating oil mixture discharged from 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 air outlet and the refrigerant pipeline, and the lubricating oil can flow back into the compressor 500 through the first oil return capillary 821, which helps to improve the operating stability of the compressor 500 to ensure the efficient and safe operation of the system.

[0068] See also Figure 1 and Figure 2According to some embodiments of the present application, the functional component is a valve body, the valve body includes an electric valve 706, and the outdoor unit assembly also includes a second oil return capillary 822, which is respectively connected to the oil separator 300 and the compressor return air port; wherein, the second oil return capillary 822 is provided with a functional component for connecting or disconnecting the second oil return capillary 822.

[0069] The second oil return capillary 822 is also used to return the lubricating oil separated by the oil separator 300 to the compressor 500. By setting the electric valve 706 on the second oil return capillary 822, the electric valve 706 can conduct the second oil return capillary 822 when the compressor 500 needs to quickly return oil, and can control the flow rate of the return oil to improve the oil return efficiency of the compressor 500. When the oil return amount of the first oil return capillary meets the normal operating conditions of the compressor 500, the electric valve 706 keeps disconnecting the second oil return capillary to reduce the operating power consumption of the product.

[0070] See also Figure 5 According to some embodiments of the present application, the outdoor unit assembly further includes an air outlet pipe 310 , which is connected and communicated with the air outlet 301 and extends into the interior of the oil separator 300 .

[0071] Exemplarily, one end of the air outlet pipe may extend into the interior of the oil separator 300 , and the other end is used to communicate with the four-way valve 200 .

[0072] After the outlet pipe separates the refrigerant and lubricating oil mixture flowing into the compressor 500 through the oil separator 300, the separated refrigerant can be discharged to the four-way valve 200 through the outlet pipe 310 connected to the outlet port 301, and flows into the outdoor heat exchanger 600 or the indoor heat exchanger 21 through the four-way valve 200.

[0073] See also Figure 4 and Figure 5 According to some embodiments of the present application, the functional component is a valve body, and the valve body also includes a one-way valve 701. The one-way valve 701 is arranged between the air outlet 301 and the first refrigerant pipeline 810, and the one-way valve 701 is configured to conduct one-way from the inside of the oil separator 300 to the outside.

[0074] Exemplarily, the one-way valve 701 may be disposed on an air outlet pipe extending into the oil separator 300 , or may be disposed outside the oil separator 300 .

[0075] The one-way valve 701 can conduct the oil separator 300 from the inside to the outside in a one-way manner, and the refrigerant separated by the oil separator 300 can only flow to the four-way valve 200, but cannot flow back to the oil separator 300 or the compressor 500, thereby improving the safety of the oil separator 300 or the compressor 500.

[0076] See also Figure 6 and Figure 7 According to some embodiments of the present application, an air outlet 301 is provided on the top wall of the oil separator 300, an air inlet 302 and a functional opening 303 are provided on the side wall of the oil separator 300, and the oil separator 300 also includes a multi-way joint 330, the multi-way joint 330 includes a main pipe 331 and a plurality of branch pipes connected to the main pipe 331, the main pipe 331 is connected to the functional opening 303, and at least one of the plurality of branch pipes is connected to at least one functional component.

[0077] By opening a functional opening on the side wall of the oil separator 300, the functional opening is connected to the main pipe of the multi-way joint, and multiple branch pipes are connected to the functional opening through the main pipe to achieve communication with the inside of the oil separator. At least one functional component is provided in at least one branch pipe of the multiple branch pipes, so that each branch pipe can achieve different functions, for example, pressure detection, temperature detection, flow control of return oil, etc. can be performed respectively, thereby improving the integration of the oil separator and the installation efficiency of the entire outdoor unit assembly.

[0078] See also Figure 7 According to some embodiments of the present application, the multiple functional components include a first functional component, the first branch pipe 332 among the multiple branch pipes is connected to the first functional component, the first functional component is a pressure sensor or a temperature sensor, the second branch pipe 333 among the multiple branch pipes is connected to the first oil return capillary 821, and the first oil return capillary 821 is connected to the compressor return air port.

[0079] By connecting the pressure sensor or temperature sensor to the first branch pipe 332, the pressure or temperature in the oil separator 300 can be detected by the pressure sensor or temperature sensor, so as to determine whether the system maintains normal operation or shuts down for maintenance according to the detected pressure or temperature. The second branch pipe 333 is provided with a first oil return capillary 821 connected thereto, so that the lubricating oil separated in the oil separator 300 can flow back to the compressor 500 through the functional opening. It can be understood that the functional opening can be used instead of the oil return port at this time.

[0080] Specifically, when the pressure sensor detects that the pressure in the oil separator 300 reaches a preset pressure threshold, it is necessary to control the system power supply to be cut off for shutdown maintenance, and the preset pressure threshold is the maximum safe pressure threshold when the system is operating normally. Similarly, when the temperature sensor detects that the temperature in the oil separator 300 reaches a preset temperature threshold, it is necessary to control the system power supply to be cut off for shutdown maintenance, and the preset temperature threshold is the maximum safe temperature threshold when the system is operating normally.

[0081] See also Figure 7According to some embodiments of the present application, the third branch pipe 334 among the multiple branch pipes is connected to the second oil return capillary 822, one end of the second oil return capillary 822 is connected to the third branch pipe 334, and the other end is connected to the compressor return air port, and the multiple functional components also include a second functional component, which is an electric valve 706. The electric valve 706 is arranged between the third branch pipe 334 and the second oil return capillary 822, and is used to connect or disconnect the second oil return capillary 822.

[0082] By setting a second oil return capillary 822 connected to the third branch pipe 334 and setting an electric valve 706 between the third branch pipe 334 and the second oil return capillary 822, the electric valve 706 can adjust the flow of lubricating oil in the second oil return capillary 822, and can open or cut off the second oil return capillary, so that when the return oil amount of the first oil return capillary 821 is insufficient, the return oil amount can be supplemented to the compressor 500 through the second oil return capillary 822, thereby further improving the stability of the system operation.

[0083] See also Figure 1 , Figure 2 and Figure 4 According to some embodiments of the present application, the outdoor unit component also includes: a four-way valve 200, the four-way valve 200 having a first interface 201, a second interface 202, a third interface 203 and a fourth interface 204, the first interface 201 is arranged toward the oil separator 300 and is connected to the oil separator 300, the second interface 202 is used to communicate with the compressor return air port, 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.

[0084] The first interface 201 of the four-way valve 200 is connected to the air outlet 301 of the oil separator 300 through the refrigerant pipeline, so as to be connected to the compressor exhaust port through the oil separator 300. The second interface 202 is connected to the compressor return port, the third interface 203 is connected to the outdoor heat exchanger 600, and the fourth interface 204 is connected to the indoor heat exchanger 21. The four-way valve 200 can select the first interface 201 to switch the connection with the third interface 203 or the fourth interface 204 according to the cooling mode or heating mode of the HVAC equipment, and the second interface 202 can be switched to be connected with the third interface 203 or the fourth interface 204, so that the refrigerant discharged from the compressor exhaust port can selectively enter the outdoor heat exchanger 600 or the indoor heat exchanger 21, thereby realizing the cooling or heating of the HVAC equipment.

[0085] See also Figure 1and Figure 2 According to some embodiments of the present application, the tank body is a gas-liquid separator 400 , and the gas-liquid separator 400 is connected to the compressor return port through the second refrigerant pipeline 820 .

[0086] The gas-liquid separator 400 is configured to be connected to the compressor return port through the second refrigerant pipeline 820 . 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 on the top wall 410 of the gas-liquid separator.

[0087] 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 condenses into liquid, but part of it remains 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 703 and the evaporator, while the gaseous refrigerant returns to the compressor 500. The gas-liquid separator 400 can effectively protect the compressor 500 and reduce the risk of damage caused by the refrigerant liquid directly entering the compressor 500.

[0088] In some embodiments, at least one functional component includes a pressure sensor, and the pressure sensor is installed on the outer wall of the gas-liquid separator 400. The pressure sensor is used to detect the return air pressure of the compressor return air port.

[0089] 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).

[0090] See also Figure 4 and Figure 8 According to some embodiments of the present application, there are multiple compressors 500 and multiple oil separators 300, and the multiple oil separators 300 are respectively connected to the multiple compressor exhaust ports. The refrigerant pipeline includes a refrigerant main line 811 and multiple refrigerant branch pipelines 812. The air outlets 301 of the multiple oil separators 300 are respectively connected and communicated with the inlets of the multiple refrigerant branch pipelines 812 one by one, and the outlets of the multiple refrigerant branch pipelines 812 are connected in parallel to the refrigerant main line 811, and the outlet of the refrigerant main line 811 is connected and communicated with the first interface 201.

[0091] The oil separators 300 may be arranged in two, three, four or more numbers, and each oil separator 300 may be connected to a compressor 500 respectively, and the compressor 500 and the oil separator 300 may be arranged in one-to-one correspondence; in some other implementations, one compressor 500 may also be connected to multiple oil separators 300. Each oil separator 300 may be arranged side by side and all located below the four-way valve 200, and each oil separator 300 may be provided with an outlet 301 respectively, and the oil separator 300, the outlet 301 and the refrigerant branch pipeline 812 may be arranged in one-to-one correspondence and connected, and finally enter the first interface 201 of the four-way valve 200 through the refrigerant main pipeline 811. Among them, when one four-way valve 200 is connected to two oil separators 300, along the horizontal direction, the outlets 301 of the two oil separators 300 may be arranged on both sides of the first interface 201, and the two oil separators 300 may be arranged symmetrically with the axis of the first interface 201 of the four-way valve 200.

[0092] See also Figure 1 and Figure 2 According to some embodiments of the present application, the outdoor unit assembly further includes a first pressure relief valve 707, which is installed on the four-way valve 200, and the first pressure relief valve 707 is used to be arranged on a pressure relief pipeline connected to the compressor exhaust port.

[0093] The pressure relief pipeline is connected between the first interface 201 of the four-way valve 200 and the oil separator 300. Specifically, the inlet of the pressure relief pipeline 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 pipeline can be connected to the inlet of the gas-liquid separator 400. The first pressure relief valve 707 is arranged on the pressure relief pipeline and is used to control the conduction or disconnection of the pressure relief pipeline. When the pressure in the system exceeds the set safety threshold, the first pressure relief valve 707 will open to release the pressure to prevent the system from malfunctioning or being damaged due to excessive pressure.

[0094] See also Figure 1 and Figure 2 In some embodiments, the outdoor unit assembly further includes a second pressure relief valve 708 , which is installed on the four-way valve 200 , and the second pressure relief valve 708 is used to be arranged on a bypass line 824 connected to an air supply line 823 of the compressor 500 .

[0095] like Figure 1 and Figure 2As shown, the HVAC equipment is provided with a bypass pipeline 824 and an air supply pipeline 823, one end of the air supply pipeline 823 can be connected between the electronic expansion valve 703 and the indoor heat exchanger 21, specifically, the refrigerant pipeline between the electronic expansion valve 703 and the indoor heat exchanger 21 can be provided with a first stop valve 711, one end of the air supply pipeline 823 can be connected and communicated with the refrigerant pipeline between the electronic expansion valve 703 and the first stop valve 711, and the other end of the air supply pipeline 823 is communicated with the air supply port of the compressor 500. One end of the bypass pipeline 824 is communicated with the gas-liquid separator 400, specifically, the bypass pipeline 824 can be communicated with the gas-liquid separator 400 through the second refrigerant main pipeline 811, and the other end of the bypass pipeline 824 is communicated with the air supply pipeline 823. The fifth valve control component is provided in the bypass pipeline 824, and is used to control the bypass pipeline 824 to be turned on or off.

[0096] In some embodiments, the outdoor unit assembly may further include a second stop valve 712 , which is disposed on the refrigerant pipeline between the four-way valve 200 and the indoor heat exchanger 21 .

[0097] See also Figure 3 According to some embodiments of the present application, optionally, the outdoor unit assembly further includes a switching circuit board 710, which is used to be electrically connected to an electrical control box of the HVAC equipment, and the switching circuit board 710 is installed on the four-way valve 200, and the switching circuit board 710 is electrically connected to the valve control assembly of the four-way valve 200.

[0098] The adapter circuit board 710 is integrated on the four-way valve 200, and the related wires of the four-way valve 200 can be centrally arranged. The communication signal can communicate with the outside world through the wires of the adapter circuit board 710, which reduces the complexity of the wire arrangement and is conducive to simplifying the arrangement of components.

[0099] According to some embodiments of the present application, the present application also proposes a HVAC outdoor unit 10, comprising: a shell 100 such as an outdoor unit assembly of any one of the first aspect embodiments, the shell 100 has a support base 110, and the outdoor unit assembly is arranged on the upper surface of the support base 110.

[0100] The HVAC outdoor unit 10 proposed in the embodiment of the present application has a housing 100. 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 can be arranged on a support base 110 of the housing 100. The housing 100 can be provided with an air inlet and outlet for air flow. The HVAC outdoor unit 10 can also have an outdoor fan 610, which 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.

[0101] According to some embodiments of the present application, the present application also proposes a HVAC equipment, including a HVAC indoor unit 20 and a HVAC outdoor unit 10 as described in the second aspect embodiment, and the HVAC indoor unit 20 is connected to the HVAC outdoor unit 10 through a refrigerant pipeline.

[0102] The HVAC equipment proposed in the embodiment of the present application can be equipment used for cooling or heating, such as an air conditioner, a heat pump system, and a multi-split system. Since it includes the HVAC outdoor unit 10 of the second aspect, it also has the technical effects of any of the above-mentioned embodiments.

[0103] In some embodiments, the HVAC indoor and outdoor units may also have a housing, and outdoor components such as the indoor heat exchanger 21 may be disposed in the housing, and the housing may be provided with air inlets and outlets for air flow. The HVAC indoor unit 20 may also have an indoor fan 22, which is disposed corresponding to the indoor heat exchanger 21 and is used to guide the air flow to flow quickly through the indoor heat exchanger 21.

[0104] In addition, 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.

[0105] The above is only a preferred specific implementation 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 should be based on the protection scope of the claims.

Claims

1. An outdoor unit assembly for HVAC equipment, characterized in that: The outdoor unit assembly comprises: A refrigerant system includes a compressor having a compressor exhaust port and a compressor return port; A tank body, the tank body being connected to the compressor exhaust port or the compressor return port through a refrigerant pipeline; At least one functional component is installed on the tank body, and the at least one functional component includes at least one of a pressure sensor, a temperature sensor, a pressure switch and a valve body.

2. The outdoor unit assembly according to claim 1, characterized in that: The functional component is a pressure sensor and / or a temperature sensor, and the pressure sensor and / or the temperature sensor are installed on the outer wall surface of the tank body. The tank body is connected to the compressor exhaust port through a refrigerant pipeline.

3. The outdoor unit assembly according to claim 1, characterized in that: The functional component is a pressure switch, which is installed on the outer wall of the tank body. The tank body is connected to the compressor exhaust port through a refrigerant pipeline. The pressure switch is used to stop the compressor when the exhaust pressure of the compressor exceeds a preset threshold.

4. The outdoor unit assembly according to any one of claims 1 to 3, characterized in that: The tank body is an oil separator having an air inlet, an air outlet and an oil return port. The air inlet is configured to be connected to the compressor exhaust port through a first refrigerant pipeline, and the oil return port is connected to the compressor air return port via a first oil return capillary.

5. The outdoor unit assembly according to claim 4, characterized in that: The outdoor unit assembly further includes a second oil return capillary tube, which is respectively connected to the oil separator and the compressor return air port.

6. The outdoor unit assembly according to claim 4, characterized in that: The outdoor unit assembly further comprises an air outlet pipe, which is connected to the air outlet and extends into the interior of the oil separator.

7. The outdoor unit assembly according to claim 4, characterized in that: The functional component is a valve body, and the valve body further includes a one-way valve, which is disposed between the air outlet and the first refrigerant pipeline, and the one-way valve is configured to conduct one-way from the inside to the outside of the oil separator.

8. The outdoor unit assembly according to claim 5, characterized in that: The top wall of the oil separator is provided with the air outlet, and the side wall of the oil separator is provided with an air inlet and a functional opening. The oil separator further comprises a multi-way joint, which comprises a main pipe and a plurality of branch pipes connected to the main pipe, the main pipe is connected to the functional opening, and at least one branch pipe of the plurality of branch pipes is connected to at least one functional component.

9. The outdoor unit assembly according to claim 8, characterized in that: The functional component includes a first functional component, a first branch pipe among the multiple branch pipes is connected to the first functional component, the first functional component is a pressure sensor or a temperature sensor, a second branch pipe among the multiple branch pipes is connected to the first oil return capillary, and the first oil return capillary is connected to the compressor return air port.

10. The outdoor unit assembly according to claim 9, characterized in that: The third branch pipe among the multiple branch pipes is connected to the second oil return capillary, one end of the second oil return capillary is connected to the third branch pipe, and the other end is connected to the compressor return air port, the functional component includes a second functional component, the second functional component is an electric valve, the electric valve is arranged between the third branch pipe and the second oil return capillary, and is used to open or disconnect the second oil return capillary.

11. The outdoor unit assembly according to claim 4, characterized in that: The outdoor unit assembly further comprises: A four-way valve, the four-way valve having a first interface, a second interface, a third interface and a fourth interface, the first interface being arranged toward the oil separator and being communicated with the oil separator, the second interface being used to communicate with the compressor return air port, the third interface being used to communicate with the outdoor heat exchanger, and the fourth interface being used to communicate with the indoor heat exchanger, the four-way valve being configured so that the first interface can be switchably communicated with one of the third interface and the fourth interface, and the second interface can be switchably communicated with the other of the third interface and the fourth interface.

12. The outdoor unit assembly according to claim 1, characterized in that: According to the tank body being a gas-liquid separator, the gas-liquid separator is connected to the air return port of the compressor through a second refrigerant pipeline.

13. The outdoor unit assembly according to claim 12, characterized in that: At least one of the functional components includes a pressure sensor, and the pressure sensor is installed on the outer wall of the gas-liquid separator.

14. The outdoor unit assembly according to claim 11, characterized in that: There are multiple compressors and multiple oil separators, and the multiple oil separators are respectively connected to the exhaust ports of multiple compressors. The refrigerant pipeline includes a refrigerant main pipeline and multiple refrigerant branch pipelines. The air outlets of the multiple oil separators are respectively connected and communicated with the inlets of the multiple refrigerant branch pipelines one by one, and the outlets of the multiple refrigerant branch pipelines are connected in parallel to the refrigerant main pipeline. The outlet of the refrigerant main pipeline is connected and communicated with the first interface.

15. A HVAC outdoor unit, characterized in that: include: A housing having a supporting base; and The outdoor unit assembly according to any one of claims 1 to 14, wherein the outdoor unit assembly is arranged on the supporting base.

16. A HVAC equipment, characterized in that: include: HVAC indoor unit; and The HVAC outdoor unit as described in claim 15, wherein the HVAC indoor unit is connected to the HVAC outdoor unit via a refrigerant pipeline.

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