Valve needle component of electronic expansion valve

Abstract

The utility model relates to the technical field of electronic expansion valves, in particular to a valve needle component of an electronic expansion valve, which drives an adjusting mechanism to move upwards or downwards through a transmission mechanism, so that the adjusting mechanism controls the flow in the electronic expansion valve, and when the adjusting mechanism completely closes the interior of the electronic expansion valve, the valve needle component of the electronic expansion valve is closed. The supporting mechanism is matched with the adjusting mechanism to seal the interior of the electronic expansion valve, so that the practicability of the valve needle component is improved; comprising a transmission mechanism; the device further comprises an adjusting mechanism and a supporting mechanism, the adjusting mechanism is installed on the transmission mechanism, and the supporting mechanism is installed between the transmission mechanism and the adjusting mechanism. The transmission mechanism provides power for the adjusting mechanism, the adjusting mechanism controls the flow in the electronic expansion valve, and the supporting mechanism is matched with the adjusting mechanism to seal the interior of the electronic expansion valve.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic expansion valves, in particular to a valve needle component of an electronic expansion valve. Background Art

[0002] An electronic expansion valve is a device used to control the flow of refrigerant, usually used in refrigeration and air conditioning systems. Existing electronic expansion valves, such as those disclosed in the invention patent with the publication number CN113719616A and the utility model patent with the publication number CN215059490U, can all achieve flow regulation.

[0003] However, the valve needle assembly in the existing electronic expansion valve is not convenient for assembly during the production process and is not convenient for stable sealing inside the valve, resulting in poor practicability. Therefore, there is an urgent need for a valve needle component of an electronic expansion valve to improve the above problems. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a valve needle component of an electronic expansion valve that drives an adjustment mechanism to move upward or downward through a transmission mechanism, enabling the adjustment mechanism to control the flow rate inside the electronic expansion valve. When the adjustment mechanism completely closes the interior of the electronic expansion valve, the support mechanism cooperates with the adjustment mechanism to seal the interior of the electronic expansion valve, thereby improving the practicability of the valve needle component.

[0005] A valve needle component of an electronic expansion valve of the utility model includes a transmission mechanism; it also includes an adjustment mechanism and a support mechanism. The adjustment mechanism is installed on the transmission mechanism, and the support mechanism is installed between the transmission mechanism and the adjustment mechanism;

[0006] The transmission mechanism provides power for the adjustment mechanism. The adjustment mechanism controls the flow rate inside the electronic expansion valve, and the support mechanism cooperates with the adjustment mechanism to seal the interior of the electronic expansion valve;

[0007] By driving the adjustment mechanism to move upward or downward through the transmission mechanism, the adjustment mechanism controls the flow rate inside the electronic expansion valve. When the adjustment mechanism completely closes the interior of the electronic expansion valve, the support mechanism cooperates with the adjustment mechanism to seal the interior of the electronic expansion valve, thereby improving the sealing effect of the valve needle component and the convenience of controlling the flow rate inside the electronic expansion valve.

[0008] Preferably, the transmission mechanism includes a screw rod, a valve needle sleeve, and a bushing. The valve needle sleeve is sleeved on the screw rod, the bushing is press-fitted on the screw rod, and the bushing is welded to the screw rod. The valve needle sleeve is welded to the adjustment mechanism; by rotating the screw rod inside the electronic expansion valve, the adjustment mechanism is driven to move upward or downward, enabling the adjustment mechanism to control the flow rate of the electronic expansion valve, thereby improving the stability of the valve needle component when controlling the flow rate.

[0009] Preferably, the adjusting mechanism includes a valve needle. The top of the valve needle is welded to the valve needle sleeve, and an outer edge is provided on the surface of the valve needle. By moving the valve needle up or down, the flow rate of the electronic expansion valve is controlled. When the valve needle completely closes the interior of the electronic expansion valve, the outer edge of the valve needle seals the gap between the valve needle and the valve port of the electronic expansion valve, thereby improving the stability of the valve needle component in controlling the flow rate inside the electronic expansion valve.

[0010] Preferably, the supporting mechanism includes a valve needle spring. The valve needle spring is installed inside the valve needle and is located between the screw rod and the valve needle spring. When the valve needle completely closes the interior of the electronic expansion valve, due to the elasticity of the valve needle spring, the valve needle is pressed downward to limit the position of the valve needle, and the outer edge of the valve needle seals the gap between the valve needle and the valve port of the electronic expansion valve, thereby improving the sealing effect of the valve needle component inside the electronic expansion valve.

[0011] Preferably, a first through hole is provided inside the valve needle, and multiple groups of second through holes are provided at the top of the valve needle. All the multiple groups of second through holes communicate with the interior of the first through hole. Through the first through hole and the multiple groups of second through holes on the valve needle, when the electronic expansion valve is opened, the inlet pressure can quickly balance the pressure inside the valve body, thereby improving the stability inside the electronic expansion valve.

[0012] Preferably, a cavity is provided inside the valve needle, and the valve needle spring is located in the cavity of the valve needle.

[0013] Preferably, a groove is provided at the top of the valve needle; it is convenient to put the top of the valve needle on the valve needle sleeve and weld the valve needle and the valve needle sleeve, thereby improving the convenience of assembling the valve needle component.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. A decoupling structure is formed between the valve needle and the screw rod through the valve needle sleeve and the bushing, which improves the flexible adjustability of the flow control mechanism and enhances the operating stability and service life of the electronic expansion valve;

[0016] 2. The valve needle has a simple structure and adopts an integrated design, which is convenient for assembly and reduces the assembly process;

[0017] 3. The valve needle structure adopts an opening design, which is convenient for quickly balancing the air pressure inside the electronic expansion valve;

[0018] 4. It has a high structural integration degree, few parts, few welding parts, is more convenient for assembly, and is beneficial for weight reduction and cost reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an isometric structural schematic diagram of the present utility model;

[0020] Figure 2 is the front view sectional structure schematic diagram of the present utility model;

[0021] Figure 3 is the exploded structure schematic diagram of the present utility model;

[0022] Figure 4 is the enlarged front view structure schematic diagram of the screw, valve needle sleeve and bushing of the present utility model.

[0023] Reference numerals in the drawings: 1, screw; 2, valve needle sleeve; 3, bushing; 4, valve needle; 5, valve needle spring; 6, first through hole; 7, second through hole. Detailed implementation manners

[0024] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive. Embodiment

[0025] A valve needle component of an electronic expansion valve includes a transmission mechanism; it also includes an adjustment mechanism and a support mechanism. The adjustment mechanism is installed on the transmission mechanism, and the support mechanism is installed between the transmission mechanism and the adjustment mechanism;

[0026] The transmission mechanism provides power for the adjustment mechanism. The adjustment mechanism controls the flow rate inside the electronic expansion valve, and the support mechanism cooperates with the adjustment mechanism to seal the inside of the electronic expansion valve;

[0027] The transmission mechanism includes a screw 1, a valve needle sleeve 2 and a bushing 3. The valve needle sleeve 2 is sleeved on the screw 1, the bushing 3 is press-fitted on the screw 1, and the bushing 3 is welded to the screw 1. The valve needle sleeve 2 is welded to the adjustment mechanism;

[0028] The adjustment mechanism includes a valve needle 4. The top of the valve needle 4 is welded to the valve needle sleeve 2, and an outer edge is provided on the surface of the valve needle 4;

[0029] By rotating the screw 1 inside the electronic expansion valve, the valve needle 4 is driven to move up or down to control the flow rate of the electronic expansion valve. When the valve needle 4 completely closes the inside of the electronic expansion valve, the gap between the valve needle 4 and the electronic expansion valve is sealed by the outer edge of the valve needle 4, thereby improving the practicality of the valve needle component. Embodiment

[0030] As Figures 1 to 4 shown, a valve needle component of an electronic expansion valve includes a transmission mechanism; it also includes an adjustment mechanism and a support mechanism. The adjustment mechanism is installed on the transmission mechanism, and the support mechanism is installed between the transmission mechanism and the adjustment mechanism;

[0031] The transmission mechanism provides power for the adjustment mechanism, the adjustment mechanism controls the flow rate inside the electronic expansion valve, and the support mechanism cooperates with the adjustment mechanism to seal the interior of the electronic expansion valve.

[0032] The transmission mechanism includes a screw 1, a valve needle sleeve 2, and a bushing 3. The valve needle sleeve 2 is sleeved on the screw 1, the bushing 3 is press-fitted on the screw 1, and the bushing 3 is welded to the screw 1. The valve needle sleeve 2 is welded to the adjustment mechanism.

[0033] The adjustment mechanism includes a valve needle 4. The top of the valve needle 4 is welded to the valve needle sleeve 2, and an outer edge is provided on the surface of the valve needle 4.

[0034] The support mechanism includes a valve needle spring 5. The valve needle spring 5 is installed inside the valve needle 4, and the valve needle spring 5 is located between the screw 1 and the valve needle spring 5.

[0035] A first through hole 6 is provided inside the valve needle 4, and multiple groups of second through holes 7 are provided at the top of the valve needle 4. All the multiple groups of second through holes 7 communicate with the inside of the first through hole 6.

[0036] A cavity is provided inside the valve needle 4, and the valve needle spring 5 is located in the cavity of the valve needle 4.

[0037] A groove is provided at the top of the valve needle 4.

[0038] By rotating the screw 1 inside the electronic expansion valve, the valve needle 4 is driven to move up or down to control the flow rate of the electronic expansion valve. When the interior of the electronic expansion valve is completely closed by the valve needle 4, the valve needle 4 is downwardly pressed by the elasticity of the valve needle spring 5, so that the outer edge of the valve needle 4 seals the gap between the valve needle 4 and the electronic expansion valve. When the electronic expansion valve is in use, the air pressure inside the valve needle 4 is adjusted through the first through hole 6 and the multiple groups of second through holes 7 on the valve needle 4 to maintain the air pressure balance inside the electronic expansion valve, thereby improving the practicability of the valve needle component.

[0039] The screw 1 and the valve needle 4 of the valve needle component of the electronic expansion valve of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached user manual, without the need for creative labor by those skilled in the art.

[0040] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A valve needle component of an electronic expansion valve, comprising a transmission mechanism; characterized in that, It further includes an adjusting mechanism and a supporting mechanism. The adjusting mechanism is installed on the transmission mechanism, and the supporting mechanism is installed between the transmission mechanism and the adjusting mechanism; The transmission mechanism provides power for the adjusting mechanism, the adjusting mechanism controls the flow rate in the electronic expansion valve, and the supporting mechanism cooperates with the adjusting mechanism to seal the interior of the electronic expansion valve; The transmission mechanism includes a screw rod (1), a valve needle sleeve (2) and a bushing (3). The valve needle sleeve (2) is sleeved on the screw rod (1), the bushing (3) is press-fitted on the screw rod (1), and the bushing (3) is welded to the screw rod (1). The valve needle sleeve (2) is welded to the adjusting mechanism; The adjusting mechanism includes a valve needle (4). The top of the valve needle (4) is welded to the valve needle sleeve (2), and an outer edge is provided on the surface of the valve needle (4); The supporting mechanism includes a valve needle spring (5). The valve needle spring (5) is installed inside the valve needle (4), and the valve needle spring (5) is located between the screw rod (1) and the valve needle spring (5).

2. The valve needle component of an electronic expansion valve according to claim 1, characterized in that, A first through hole (6) is provided inside the valve needle (4), and multiple groups of second through holes (7) are provided at the top of the valve needle (4), and multiple groups of second through holes (7) are all communicated with the inside of the first through hole (6).

3. The valve needle component of an electronic expansion valve according to claim 1, characterized in that, A cavity is provided inside the valve needle (4), and the valve needle spring (5) is located in the cavity of the valve needle (4).

4. The valve needle component of an electronic expansion valve according to claim 1, characterized in that, A groove is provided at the top of the valve needle (4).

Images