Electronic expansion valve with filtering function

Abstract

The utility model discloses a kind of electronic expansion valve with filtering function, including stator assembly, valve core assembly and valve body, and the valve body is equipped with import passage, export passage and adjusting channel, one end of import passage and export passage is communicated with adjusting channel, valve core assembly is connected on valve body, and one end of valve core assembly is located in adjusting channel, stator assembly is fixed on valve body, and the upper end of valve core assembly is inserted into stator assembly, filter assembly is arranged in import passage, filter assembly is detachably connected to import passage, the utility model is reasonable in structure, the fluid flowing into valve body can be filtered by filter assembly, prevent the channel in valve body from being blocked by sundries, and it is easy to install and clean.

Description

Technical Field

[0001] This utility model relates to the field of electronic expansion valves, and in particular to an electronic expansion valve with built-in filtration function. Background Technology

[0002] The expansion valve is an important component in a refrigeration system. It is usually installed between the condenser and the evaporator. The expansion valve throttles the high-temperature, high-pressure liquid refrigerant into low-temperature, low-pressure wet vapor, which enters the evaporator to absorb heat and achieve a cooling effect. The expansion valve can be controlled by the thermal head assembly to prevent insufficient utilization of the evaporator area or frosting.

[0003] The fluid flowing through the electronic expansion valve must pass through the inlet channel, outlet channel, and regulating channel within the valve body. Because fluid control is required, the dimensions of the inlet and outlet channels connecting to the regulating channel are relatively small, making them prone to clogging by particles. A filter is typically installed at the inlet channel, but the filter itself is also easily clogged, and disassembly, cleaning, and replacement are cumbersome. To address these issues, a solution is proposed below. Utility Model Content

[0004] The purpose of this invention is to provide an electronic expansion valve with built-in filtration function, which has the advantages of being easy to replace and clean and not easily clogged.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: An electronic expansion valve with built-in filtration function includes a stator assembly, a valve core assembly, and a valve body. The valve body has an inlet channel, an outlet channel, and an adjustment channel. One end of the inlet channel and the outlet channel are connected to the adjustment channel. The valve core assembly is connected to the valve body, and one end of the valve core assembly is located in the adjustment channel. The stator assembly is fixed to the valve body, and the upper end of the valve core assembly is inserted into the stator assembly. A filter assembly is provided in the inlet channel, and the filter assembly is detachably connected to the inlet channel.

[0006] Preferably, the filter assembly includes a filter cartridge and a filter screen. The filter cartridge includes an annular frame and a plurality of shaped rods located at one end of the annular frame. The other ends of the plurality of shaped rods intersect at a point to form a filter screen skeleton. The filter screen is wrapped around the filter screen skeleton and is fixedly connected to the filter screen skeleton.

[0007] Preferably, a slot is provided on the outer wall of one end of the ring frame, and several locking blocks are provided on one side of the filter screen frame, with the locking ring engaging with the slot.

[0008] Preferably, the filter assembly is inserted into the inlet channel, and an elastic washer is provided on the annular frame.

[0009] The beneficial effects of this utility model are as follows: the filter screen is supported by a filter screen skeleton to form a specific shape, which increases its area compared to a flat filter screen, thereby increasing the total number of particles that the filter screen can hold; the filter component itself has no connection with the inlet channel, and is fixed in the inlet channel by the external connecting pipe pressing against the elastic ring, making it easy to disassemble and clean. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment; Figure 2 This is a cross-sectional structural diagram of an embodiment; Figure 3 This is a cross-sectional view of the filter assembly used in an embodiment.

[0011] Reference numerals in the attached drawings: 1. Stator assembly; 2. Valve core assembly; 3. Valve body; 4. Inlet channel; 5. Outlet channel; 6. Adjustment channel; 7. Filter assembly; 8. Filter cartridge; 9. Filter screen; 10. Annular frame; 11. Forming rod; 12. Slot; 13. Locking block; 14. Elastic washer. Detailed Implementation

[0012] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model's concept should be protected. Identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom" and "top," "inner" and "outer" refer to directions toward or away from the geometric center of a specific component.

[0013] like Figures 1 to 3 As shown, an electronic expansion valve with built-in filtration function includes a stator assembly 1, a valve core assembly 2, and a valve body 3. The valve body 3 has an inlet channel 4, an outlet channel 5, and an adjustment channel 6, with one end of both the inlet channel 4 and the outlet channel 5 communicating with the adjustment channel 6. The valve core assembly 2 is connected to the valve body 3, and one end of the valve core assembly 2 is located within the adjustment channel 6. The stator assembly 1 is fixed to the valve body 3, and the upper end of the valve core assembly 2 is inserted into the stator assembly 1. The stator assembly 1, valve core assembly 2, and valve body 3 are all conventional designs and will not be described in detail in this application.

[0014] In this application, a filter assembly 7 is provided in the inlet channel 4. The filter assembly 7 and the inlet channel 4 are detachably connected, and can be removed for cleaning to keep the fluid flowing smoothly in the filter assembly 7.

[0015] The filter assembly 7 in this application includes a filter cartridge 8 and a filter screen 9. The filter cartridge 8 includes an annular frame 10 and a plurality of shaped rods 11 located at one end of the annular frame 10. The other ends of the plurality of shaped rods 11 intersect at a point to form a filter screen skeleton. The filter screen skeleton determines the shape of the filter screen 9, and is generally set as a hemispherical skeleton or a conical skeleton. The filter screen 9 is wrapped around the filter screen skeleton and fixedly connected to the filter screen skeleton, so that the filter screen 9 is hemispherical or conical, which can increase its area and thus prolong the time required for complete clogging.

[0016] A slot 12 is provided on the outer wall of one end of the ring frame 10, and several locking blocks 13 are provided on one side of the filter screen frame. The locking blocks 13 are inserted into the slot 12, so that the filter screen frame is locked and fixed to the ring frame 10. When cleaning the filter screen 9, the filter screen frame can be removed from the ring frame 10, so that it can be cleaned from both sides.

[0017] An elastic washer 14 is provided on the ring frame 10. One side of the elastic washer 14 is located outside the inlet channel 4. When an external pipe or other component is connected to the inlet channel 4, it will compress the elastic washer 14, so that the filter assembly 7 can be stably located in the inlet channel 4.

[0018] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electronic expansion valve with built-in filtration function, comprising a stator assembly (1), a valve core assembly (2), and a valve body (3), characterized in that, The valve body (3) is provided with an inlet channel (4), an outlet channel (5) and an adjustment channel (6). One end of the inlet channel (4) and the outlet channel (5) are connected to the adjustment channel (6). The valve core assembly (2) is connected to the valve body (3), and one end of the valve core assembly (2) is located in the adjustment channel (6). The stator assembly (1) is fixed to the valve body (3), and the upper end of the valve core assembly (2) is inserted into the stator assembly (1). A filter assembly (7) is provided in the inlet channel (4), and the filter assembly (7) is detachably connected to the inlet channel (4).

2. The electronic expansion valve with built-in filtration function according to claim 1, characterized in that, The filter assembly (7) includes a filter cartridge (8) and a filter screen (9). The filter cartridge (8) includes an annular frame (10) and a plurality of forming rods (11) located at one end of the annular frame (10). The other ends of the plurality of forming rods (11) intersect at a point to form a filter screen skeleton. The filter screen (9) is wrapped around the filter screen skeleton and is fixedly connected to the filter screen skeleton.

3. The electronic expansion valve with built-in filtration function according to claim 2, characterized in that, A slot (12) is provided on the outer wall of one end of the ring frame (10), and a number of locking blocks (13) are provided on one side of the filter frame. The locking blocks (13) are engaged with the slot (12).

4. An electronic expansion valve with built-in filtration function according to claim 3, characterized in that, The filter assembly (7) is inserted into the inlet channel (4), and an elastic washer (14) is provided on the ring frame (10).

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