Throttling assembly for air conditioner refrigeration equipment

Abstract

The utility model provides a throttling assembly for air conditioner refrigeration equipment. Comprising a connecting piece, a first two-way filter, an electronic expansion valve and a second two-way filter, wherein the connecting piece is communicated with a condenser; the first two-way filter is used for filtering impurities and particulate matters in a refrigerant; the electronic expansion valve is used for controlling the flow of the refrigerant; a one-way valve used for preventing refrigerants from flowing back to the condenser and increasing the flow of the refrigerants in the refrigeration cycle is arranged on the electronic expansion valve in parallel. According to the throttling assembly used on the air conditioner refrigeration equipment, the overall connecting structure adopts a modular design which is simple and easy to maintain, the installation and maintenance cost is relatively low, and each assembly can be conveniently checked and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning and refrigeration, in particular to a throttling component used on air conditioning and refrigeration equipment. Background Art

[0002] At present, the throttling components of common air-conditioning equipment include capillary tubes, thermal expansion valves, electronic expansion valves and other throttling methods. They are mainly used to adjust the refrigerant flow from the condenser to the evaporator to ensure that the refrigerant can fully evaporate in the evaporator, thereby absorbing heat and achieving a cooling effect.

[0003] However, in practice, it is found that the throttling components commonly found on the market are mostly designed to be more complex in order to accurately control the refrigerant flow rate, which results in the current throttling components being difficult to maintain and having high costs, as described in the "A Refrigeration Throttling Device" disclosed in Patent No. "201921373386.5".

[0004] Therefore, it is necessary to provide a throttling component for air-conditioning and refrigeration equipment to solve the above technical problems. Utility Model Content

[0005] The utility model overcomes the shortcomings of the above-mentioned technology and provides a throttling component used in air-conditioning refrigeration equipment.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a throttling component for air-conditioning refrigeration equipment, including a connector 1 for communicating with a condenser through a pipeline in sequence, a first two-way filter 2 for filtering impurities and particulate matter in the refrigerant, an electronic expansion valve 3 for controlling the refrigerant flow, and a second two-way filter 4 for filtering impurities and particulate matter in the refrigerant connected to an evaporator, wherein a one-way valve 5 is arranged in parallel on the electronic expansion valve 3 for preventing the refrigerant from flowing back to the condenser during the refrigeration cycle while increasing the refrigerant flow.

[0007] Preferably, the throttling assembly includes two electronic expansion valves 3 arranged in parallel, one of the electronic expansion valves 3 is provided with a one-way valve 5 in parallel, and the electronic expansion valve 3 and the one-way valve 5 are connected at the connection point by a T-shaped three-way connector 6, wherein the upper end openings of the two parallel T-shaped three-way connectors 6 are connected to the first two-way filter 2 through a first Y-shaped three-way pipe 7, and the other two parallel lower ports are connected to the second two-way filter 4 through a second Y-shaped three-way pipe 8.

[0008] Preferably, the one-way valve 5 is a four-part double-hole one-way valve, and the pipeline between the electronic expansion valve 3 and the first two-way filter 2 and the pipeline between the electronic expansion valve 3 and the second two-way filter 4 are respectively provided with connecting pipe openings 9 for connecting the inlet and outlet pipes of the one-way valve 5.

[0009] Preferably, the water inlet and outlet pipes of the four-way double-hole one-way valve are capillaries, and the capillary tube is covered with a PVC transparent protective sleeve.

[0010] Preferably, the connector 1 is a Y-shaped three-way pipe, the two upper interfaces of the Y-shaped three-way pipe are connected to the condenser, and the lower interface of the Y-shaped three-way pipe is connected to the first two-way filter 2 through a pipeline.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By connecting the one-way valve in parallel to the electronic expansion valve, when the electronic expansion valve needs to adjust the refrigerant flow, the one-way valve can serve as an auxiliary channel to provide additional flow support, ensuring that the system can accurately control the refrigerant flow to meet different refrigeration needs.

[0013] 2. By using a two-way filter, it means that no matter in which direction the refrigerant flows, it can be effectively filtered. At the same time, it can also filter out impurities or particulate matter that may be generated again after the refrigerant passes through the electronic expansion valve. This reduces the complexity of maintenance because there is no need to consider the impact of changes in the refrigerant flow direction on the filter.

[0014] 3. The overall connection structure of the present application adopts a simple and easy-to-maintain modular design. Therefore, the cost of installation and maintenance is relatively low. During installation, you only need to connect the components according to the designed layout. If a component fails, you can easily remove it and replace it with a new one without large-scale disassembly or reconstruction of the entire system. Each component can be easily inspected and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an overall structural diagram of a throttling component used in an air-conditioning refrigeration device of the utility model;

[0016] Figure 2 It is a structural diagram of another connection mode of the electronic expansion valve and the one-way valve of the utility model;

[0017] Figure 3 yes Figure 1 An enlarged view of the one-way valve structure is shown;

[0018] Figure 4 yes Figure 1An enlarged view of the pipeline structure between the electronic expansion valve and the first two-way filter is shown;

[0019] Figure 5 yes Figure 1 An enlarged view of the pipeline structure between the electronic expansion valve and the second two-way filter is shown.

[0020] The names of the components corresponding to the numbers in the drawings of the specification are as follows:

[0021] Connecting piece 1; first two-way filter 2; electronic expansion valve 3; second two-way filter 4; one-way valve 5; T-type three-way connecting piece 6; first Y-type three-way pipe 7; second Y-type three-way pipe 8; connecting pipe port 9. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is described in detail below with reference to the drawings.

[0023] See also Figure 1 to Figure 5 The throttling component for air-conditioning refrigeration equipment of this embodiment includes a connector 1 for communicating with a condenser through a pipeline in sequence, a first two-way filter 2 for filtering impurities and particulate matter in the refrigerant, an electronic expansion valve 3 for controlling the refrigerant flow rate, and a second two-way filter 4 for filtering impurities and particulate matter in the refrigerant communicated with an evaporator. A one-way valve 5 is arranged in parallel on the electronic expansion valve 3 for preventing the refrigerant from flowing back to the condenser during the refrigeration cycle and increasing the refrigerant flow rate.

[0024] In this embodiment, the connector 1 of the present application is the starting point of the throttling assembly, which is used to communicate with the condenser. The condenser is a key component in the refrigeration cycle, and its main function is to cool the refrigerant from the gaseous state and convert it into the liquid state, while releasing heat. And because the refrigerant may be mixed with impurities or particulate matter during the circulation process, these substances may affect the operating efficiency and life of the system, and the first two-way filter 2 and the second two-way filter 4 in the present application can filter the refrigerant flowing from the condenser to the evaporator, and can also filter the refrigerant flowing back from the evaporator to the condenser. The present application can control the flow of the refrigerant entering the evaporator by adjusting the opening of the electronic expansion valve 3, thereby adjusting the temperature and refrigeration effect of the evaporator. At the same time, the electronic expansion valve 3 has higher control accuracy and response speed than the traditional thermal expansion valve, and can better adapt to the refrigeration requirements under different working conditions. And in some cases, such as when the system is shut down or the refrigerant flow rate suddenly decreases, the refrigerant may flow back, which may cause instability or damage to the system. The setting of the one-way valve 5 can effectively avoid this situation. In addition, the one-way valve 5 can also increase the flow rate of the refrigerant when necessary. When the system requires a larger refrigerant flow rate to meet the refrigeration demand, the one-way valve 5 can be opened to allow more refrigerant to pass through, thereby increasing the flow rate.

[0025] In this embodiment, the present application realizes effective control of refrigerant flow, pressure and purity by integrating multiple functional components, thereby improving the operating efficiency and reliability of air-conditioning and refrigeration equipment.

[0026] In this embodiment, since the one-way valve 5 is connected in parallel to the electronic expansion valve 3, when the electronic expansion valve needs to adjust the refrigerant flow, the one-way valve can serve as an auxiliary channel to provide additional flow support, ensuring that the system can accurately control the refrigerant flow to meet different refrigeration needs.

[0027] In this embodiment, the present application sets a one-way valve 5 in parallel with the electronic expansion valve 3, so that the one-way valve 5 does not interfere with the normal operation of the electronic expansion valve, while ensuring that the refrigerant does not flow back to the condenser in the refrigeration cycle, thereby avoiding unnecessary energy loss and possible system damage. The use of two-way filters 2 and 4 means that no matter in which direction the refrigerant flows, it can be effectively filtered, and at the same time, impurities or particulate matter that may be generated again after the refrigerant passes through the electronic expansion valve 3 can be filtered out, which reduces the complexity of maintenance because there is no need to consider the impact of changes in the refrigerant flow direction on the filter.

[0028] In this embodiment, the overall connection structure adopts a simple and easy-to-maintain modular design. Therefore, the cost of installation and maintenance is relatively low. During installation, it is only necessary to connect the components according to the designed layout. If a component fails, it can be easily removed and replaced with a new component without the need for large-scale disassembly or reconstruction of the entire system. Each component can be easily inspected and maintained.

[0029] In this embodiment, the connector 1, the first two-way filter 2, the electronic expansion valve 3, the one-way valve 5 and the second two-way filter 4 in this application are all common and relatively low-priced components on the market. Using these components can reduce the overall cost of the throttling component.

[0030] Preferably, the throttling assembly includes two electronic expansion valves 3 arranged in parallel, and a one-way valve 5 is arranged in parallel on one electronic expansion valve 3. The electronic expansion valve 3 and the one-way valve 5 are connected at the connection point using a T-shaped three-way connector 6, wherein the upper end openings of the two parallel T-shaped three-way connectors 6 are connected to the first two-way filter 2 through a first Y-shaped three-way pipe 7, and the other two parallel lower ports are connected to the second two-way filter 4 through a second Y-shaped three-way pipe 8.

[0031] In this embodiment, the present application adopts two electronic expansion valves 3 arranged in parallel. When one of the electronic expansion valves 3 fails or needs maintenance, the other can continue to work to ensure the continuous and stable operation of the system. And this design allows the electronic expansion valve 3 to be switched while the system is running, thereby reducing the downtime caused by maintenance or failure. Furthermore, the two electronic expansion valves 3 can be adjusted independently, and their respective flow rates can be adjusted according to the actual needs of the system or the operating status to achieve more precise flow control.

[0032] In this embodiment, the present application effectively prevents the refrigerant from flowing back to the condenser in the refrigeration cycle by connecting a one-way valve 5 in parallel to each electronic expansion valve 3, thereby ensuring system safety. At the same time, the redundant setting of the two one-way valves 5 further enhances the backflow protection, ensuring that the system can operate stably under any circumstances.

[0033] Preferably, the one-way valve 5 is a four-part double-hole one-way valve, and the pipeline between the electronic expansion valve 3 and the first two-way filter 2 and the pipeline between the electronic expansion valve 3 and the second two-way filter 4 are respectively provided with connecting pipe openings 9 for connecting the inlet and outlet pipes of the one-way valve 5.

[0034] In this embodiment, the present application uses a four-point double-hole one-way valve as the one-way valve 5. This one-way valve has a standard four-point interface, which is suitable for a variety of pipeline systems, and the double-hole design is convenient for connecting the inlet and outlet pipes. And through the preset connecting pipe mouth 9, the one-way valve 5 can be easily installed in the system without additional pipeline connection or modification, which simplifies the installation process, and also makes the entire throttling component compact and reduces space occupancy. It also facilitates subsequent maintenance work. If the one-way valve 5 needs to be maintained or replaced, it only needs to be disassembled and installed through the connecting pipe mouth 9, without large-scale changes to the entire system.

[0035] Preferably, the water inlet and outlet pipes of the four-way double-hole one-way valve are capillaries, and a PVC transparent protective sleeve is provided on the outer jacket of the capillary tube.

[0036] In this embodiment, the capillary tube is a pipe with a very small inner diameter, which is usually used in situations where precise flow control or liquid backflow prevention is required. The use of the capillary tube as the inlet and outlet pipes can effectively control the flow of the refrigerant. At the same time, due to its small inner diameter, it can increase the resistance of the refrigerant flow and further prevent the occurrence of backflow.

[0037] In this embodiment, since the PVC protective cover is transparent, it can protect the capillary tube to a certain extent and at the same time, the internal conditions of the capillary tube, such as whether there is blockage, leakage, etc., can be easily observed.

[0038] Preferably, the connector 1 is a Y-shaped three-way pipe, the two upper interfaces of the Y-shaped three-way pipe are connected to the condenser, and the lower interface of the Y-shaped three-way pipe is connected to the first two-way filter 2 through a pipeline.

[0039] In this embodiment, since the Y-shaped three-way pipe has three interfaces, it can be directly connected to the condenser and the first two-way filter 2, reducing additional pipes and connectors, thereby simplifying the installation process. In addition, the compact connection method reduces the length and bends of the pipe, making the layout of the entire refrigeration system more concise and clear.

[0040] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A throttling component for air conditioning and refrigeration equipment, characterized in that: The invention comprises a connecting piece (1) for communicating with a condenser and connected in sequence through a pipeline, a first two-way filter (2) for filtering impurities and particulate matter in the refrigerant, an electronic expansion valve (3) for controlling the flow rate of the refrigerant, and a second two-way filter (4) for filtering impurities and particulate matter in the refrigerant and connected with an evaporator, wherein a one-way valve (5) for preventing the refrigerant from flowing back to the condenser and increasing the flow rate of the refrigerant in parallel with the electronic expansion valve (3) is provided.

2. The throttling assembly for air conditioning and refrigeration equipment according to claim 1 is characterized in that: The throttling assembly comprises two electronic expansion valves (3) arranged in parallel, one of the electronic expansion valves (3) being provided with a one-way valve (5) in parallel, and the electronic expansion valve (3) and the one-way valve (5) are connected at the connection point by a T-shaped three-way connector (6), wherein the upper end openings of the two parallel T-shaped three-way connectors (6) are connected to the first two-way filter (2) through a first Y-shaped three-way pipe (7), and the other two parallel lower ports are connected to the second two-way filter (4) through a second Y-shaped three-way pipe (8).

3. The throttling assembly for air conditioning and refrigeration equipment according to claim 1, characterized in that: The one-way valve (5) is a four-part double-hole one-way valve, and the pipeline between the electronic expansion valve (3) and the first two-way filter (2), and the pipeline between the electronic expansion valve (3) and the second two-way filter (4) are respectively provided with connecting pipe openings (9) for connecting the inlet and outlet pipes of the one-way valve (5) thereto.

4. The throttling assembly for air conditioning and refrigeration equipment according to claim 3 is characterized in that: The water inlet and outlet pipes of the four-way double-hole one-way valve are capillaries, and a transparent PVC protective sleeve is provided on the outer jacket of the capillary tube.

5. The throttling assembly for air conditioning and refrigeration equipment according to any one of claims 1 to 4, characterized in that: The connecting piece (1) is a Y-shaped three-way pipe, the two upper interfaces of the Y-shaped three-way pipe are connected to the condenser, and the lower interface of the Y-shaped three-way pipe is connected to the first two-way filter (2) through a pipeline.

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