Magnetic rotor assembly of electronic expansion valve

Abstract

The utility model relates to the technical field of electronic expansion valves, in particular to a magnetic rotor assembly of an electronic expansion valve, which transmits power to a valve needle assembly through a magnetic rotor, so that the valve needle assembly controls flow in the electronic expansion valve, and meanwhile, the lifting range of the valve needle assembly is controlled through a stop mechanism. The practicability of the magnetic rotor assembly is improved; comprising a magnetic rotor; the electromagnetic valve further comprises a stop mechanism and a valve needle assembly. The magnetic rotor and the stop mechanism are both installed on the valve needle assembly. The magnetic rotor transmits power, the stop mechanism limits the generated lifting range, and the valve needle assembly controls the flow in the electronic expansion valve.

Description

Technical Field

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

[0002] Energy conservation and emission reduction are urgent issues that need to be solved by mankind today. The throttling device plays a key role in the refrigeration system. By selecting a suitable throttling mechanism to match the refrigeration system, the energy consumption of the entire refrigeration system can be reduced. Therefore, the types of electronic expansion valves are increasing.

[0003] The existing electronic expansion valve, such as the electronic expansion valve and its processing method disclosed in the invention patent with announcement number CN112413147B, is mainly composed of components such as a valve seat, a magnetic rotor and a stopper. When the magnetic rotor drives the stopper to rotate, the stopper drives the valve needle assembly to rotate together. Since the valve needle and the nut are threadedly connected, the valve needle assembly can slide along the axial direction while rotating under the action of the threaded structure. The valve needle assembly extends into or out of the valve seat to change the on-off state between the first connecting port and the second connecting port, thereby realizing the opening and closing of the electronic expansion valve.

[0004] However, during the installation process, it was found that the stop rod on the existing electronic expansion valve was sleeved on the magnetic rotor and then welded. This assembly method may cause damage to the magnetic rotor and is not easy to detect. The high temperature generated by welding can easily affect the magnetism of the magnetic rotor. In addition, the existing magnetic rotor assembly has a simple structure and is not convenient for vertical installation, which affects the installation accuracy and leads to poor practicality. Therefore, there is an urgent need for a magnetic rotor assembly for an electronic expansion valve to improve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a magnetic rotor assembly for an electronic expansion valve, which transmits power to the valve needle assembly through a magnetic rotor, so that the valve needle assembly controls the flow in the electronic expansion valve, and at the same time controls the lifting range of the valve needle assembly through a stopping mechanism, thereby improving the practicality of the magnetic rotor assembly.

[0006] The utility model discloses a magnetic rotor assembly of an electronic expansion valve, comprising a magnetic rotor, a stop mechanism and a valve needle assembly, wherein the magnetic rotor and the stop mechanism are both mounted on the valve needle assembly;

[0007] The magnetic rotor transmits power, the stop mechanism limits the lifting range, and the valve needle assembly controls the flow in the electronic expansion valve;

[0008] The power is transmitted to the valve needle assembly through the magnetic rotor, so that the valve needle assembly controls the flow in the electronic expansion valve. At the same time, the lifting range of the valve needle assembly is controlled by the stop mechanism, thereby improving the practicality of the magnetic rotor assembly.

[0009] Preferably, the stopping mechanism comprises a fixing plate, a stopping rod, a slip ring and a guide mechanism, a nut assembly is provided on the valve needle assembly, the stopping rod is mounted on the magnetic rotor through the fixing plate, and the guide mechanism and the slip ring are both mounted on the nut assembly; when the valve needle assembly is driven to rotate by the magnetic rotor, the slip ring is pushed to move upward or downward by the stopping rod, and when the slip ring is blocked by the guide mechanism or the nut assembly, the magnetic rotor stops rotating, and the lifting range of the valve needle assembly is limited, thereby improving the stability of the closing and opening of the valve needle.

[0010] Preferably, the guiding mechanism comprises a spring guide rail, which is sleeved on the nut assembly, and the bottom end of the spring guide rail is clamped on the nut assembly, and a first limiting end is provided on the top of the spring guide rail; the slip ring is guided by the spring guide rail so that the slip ring spirally slides upward or downward, and when the slip ring slides upward to the top of the spring guide rail, the slip ring is blocked by the first limiting end on the top of the spring guide rail, thereby improving the smoothness of the lifting and lowering of the slip ring.

[0011] Preferably, the fixing plate is provided with a plurality of through holes, which facilitates processing while ensuring its own strength, thereby reducing processing time and cost.

[0012] Preferably, the stop rod and the fixed plate are welded, and the magnetic rotor, the fixed plate and the stop rod are formed into an integrated structure by injection molding; this reduces the impact of high temperature on the magnetic rotor when welding the stop rod, and improves the stability of the magnetic rotor, the fixed plate and the stop rod during use.

[0013] Preferably, a plurality of notches are provided on the surface of the fixing plate to prevent the fixing plate and the magnetic rotor from rotating relative to each other after injection molding, thereby improving the stability between the magnetic rotors.

[0014] Preferably, an inner hole is provided in the middle of the fixed plate, the top of the valve needle assembly is inserted into the inner hole of the fixed plate, and the top of the valve needle assembly and the fixed plate are installed with a gap, and then the top of the valve needle assembly and the fixed plate are welded, and a limiting groove and a second limit are provided on the side wall of the nut assembly; the limiting groove is used to facilitate the clamping of the bottom of the spring guide rail, and the second limiting end is used to block the spiral descending slip ring, thereby improving the stability of the magnetic rotor assembly.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The magnetic rotor adopts an integrated design, which is integrally formed with the fixing plate and the stop rod, and has high overall strength;

[0017] 2. The stop rod is welded to the fixing plate, which improves the stability of the fixing plate and the stop rod, reduces the assembly process and reduces production costs;

[0018] 3. The notch at the edge of the fixed plate makes it convenient to limit the fixed plate after injection molding to prevent the magnetic rotor and the fixed plate from rotating relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 4 It is an axonometric enlarged structural diagram of the fixing plate and the stop rod of the utility model;

[0023] Figure 5 It is a schematic diagram of the enlarged structure of the fixing plate of the utility model from top view;

[0024] Figure 6 It is an axonometric cross-sectional structural schematic diagram of the magnetic rotor and valve needle assembly and other structures of the utility model.

[0025] Markings in the accompanying drawings: 1. magnetic rotor; 2. fixing plate; 3. stop rod; 4. slip ring; 5. spring guide rail; 6. through hole; 7. notch; 10. valve needle assembly; 11. nut assembly. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0027] Example

[0028] like Figures 1 to 6 As shown, a magnetic rotor assembly of an electronic expansion valve includes a magnetic rotor 1; a stop mechanism and a valve needle assembly 10, and the magnetic rotor 1 and the stop mechanism are both installed on the valve needle assembly 10;

[0029] The magnetic rotor 1 transmits power, the stop mechanism limits the lifting range, and the valve needle assembly 10 controls the flow in the electronic expansion valve;

[0030] The stop mechanism comprises a fixing plate 2, a stop rod 3, a slip ring 4 and a guide mechanism. A nut assembly 11 is provided on the valve needle assembly 10. The stop rod 3 is mounted on the magnetic rotor 1 through the fixing plate 2. The guide mechanism and the slip ring 4 are both mounted on the valve needle assembly 10.

[0031] The guide mechanism includes a spring guide rail 5, which is sleeved on the valve needle assembly 10, and the bottom end of the spring guide rail 5 is clamped on the valve needle assembly 10, and the top of the spring guide rail 5 is provided with a first limit end;

[0032] The fixing plate 2 is provided with a plurality of through holes 6;

[0033] The stop rod 3 and the fixing plate 2 are welded, and the magnetic rotor 1, the fixing plate 2 and the stop rod 3 are formed into an integrated structure by injection molding;

[0034] A plurality of notches 7 are provided on the surface of the fixing plate 2;

[0035] The fixing plate 2 is provided with an inner hole in the middle, the top of the valve needle assembly 10 is inserted into the inner hole of the fixing plate 2, and the top of the valve needle assembly 10 is welded to the fixing plate 2, and the side wall of the nut assembly 11 is provided with a limiting groove and a second limit.

[0036] The magnetic rotor 1, slip ring 4 and spring guide rail 5 of the magnetic rotor assembly of an electronic expansion valve of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual without the need for creative work by technicians in this field.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A magnetic rotor assembly of an electronic expansion valve, comprising a magnetic rotor (1); characterized in that: It also includes a stop mechanism and a valve needle assembly (10), wherein the magnetic rotor (1) and the stop mechanism are both mounted on the valve needle assembly (10); The magnetic rotor (1) transmits power, the stop mechanism limits the range of lifting and lowering, and the valve needle assembly (10) controls the flow in the electronic expansion valve.

2. A magnetic rotor assembly for an electronic expansion valve as claimed in claim 1, characterized in that: The stop mechanism comprises a fixing plate (2), a stop rod (3), a slip ring (4) and a guide mechanism; a nut assembly (11) is provided on the valve needle assembly (10); the stop rod (3) is mounted on the magnetic rotor (1) through the fixing plate (2); and the guide mechanism and the slip ring (4) are both mounted on the valve needle assembly (10).

3. A magnetic rotor assembly for an electronic expansion valve as claimed in claim 2, characterized in that: The guide mechanism comprises a spring guide rail (5), the spring guide rail (5) is sleeved on the valve needle assembly (10), and the bottom end of the spring guide rail (5) is clamped on the nut assembly (11), and the top of the spring guide rail (5) is provided with a first limiting end.

4. A magnetic rotor assembly for an electronic expansion valve as claimed in claim 2, characterized in that: The fixing plate (2) is provided with a plurality of through holes (6).

5. The magnetic rotor assembly of an electronic expansion valve according to claim 2, characterized in that: The stop rod (3) and the fixing plate (2) are welded, and the magnetic rotor (1), the fixing plate (2) and the stop rod (3) are formed into an integrated structure by injection molding.

6. A magnetic rotor assembly for an electronic expansion valve as claimed in claim 4, characterized in that: A plurality of groups of notches (7) are provided on the surface of the fixing plate (2).

7. A magnetic rotor assembly for an electronic expansion valve as claimed in claim 2, characterized in that: An inner hole is provided in the middle of the fixing plate (2), the top of the valve needle assembly (10) is inserted into the inner hole of the fixing plate (2), and the top of the valve needle assembly (10) and the fixing plate (2) are welded, and a limit groove and a second limit are provided on the side wall of the nut assembly (11).

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