A solenoid valve

Abstract

The present application relates to a solenoid valve, which includes a valve body, and a first closing member, a first driving member, a second closing member, and a second driving member installed in the valve body. A valve cavity is arranged in the valve body, an air inlet, a normally closed air outlet, and a normally open air outlet are arranged on the valve body, and an air inlet, a first air outlet, and a second air outlet are arranged on the valve body; the first closing member is used to close the first air outlet; the first driving member is used to drive the first closing member to close or open the first air outlet; the second closing member is used to close the second air outlet; the second driving member is used to drive the second closing member to close or open the second air outlet, and the second driving member is linked with the first driving member; wherein, when the first driving member drives the first closing member to close the first air outlet, the second driving member drives the second closing member to open the second air outlet; when the first driving member drives the first closing member to open the first air outlet, the second driving member drives the second closing member to close the second air outlet. The present application adopts a solenoid valve to realize two different working conditions.

Description

Technical Field

[0001] The present application relates to a solenoid valve. Background Art

[0002] A refrigerator is a machine that transfers heat from a cooled object with a lower temperature to an ambient medium to obtain cooling capacity. The gas distribution method of a refrigerator is achieved through a compressor and a valve. The valve is a device that uses a movable part to open, close or partially block one or more openings or channels to allow liquid flow, air flow or other air flow or a large amount of loose materials to flow out, block or be regulated. The refrigerant in the existing refrigerator is connected to the evaporator through a solenoid valve to form normal ice making, and when defrosting, the hot air is directly fed into the evaporator through another solenoid valve for rapid defrosting, which makes the structure more complicated. Summary of the invention

[0003] The present application provides a solenoid valve with a simple structure suitable for low-pressure products.

[0004] The technical solution adopted by the present application to solve the above technical problems is: the solenoid valve comprises:

[0005] A valve body, wherein a valve cavity is arranged in the valve body, an air inlet, a normally closed air outlet and a normally open air outlet are arranged on the valve body, an air inlet passage connecting the valve cavity and the air inlet, a first air outlet passage connecting the valve cavity and the normally closed air outlet, and a second air outlet passage connecting the valve cavity and the normally open air outlet are arranged on the valve body;

[0006] A first closing member, installed in the valve body, for closing the first air outlet;

[0007] A first driving member is installed in the valve body and is used to drive the first closing member to close or open the first air outlet;

[0008] A second sealing member installed in the valve body to seal the second air outlet; and

[0009] A second driving member is installed in the valve body and is used to drive the second closing member to close or open the second air outlet, and the second driving member is linked with the first driving member;

[0010] When the first driving member drives the first closing member to close the first air outlet, the second driving member drives the second closing member to open the second air outlet; when the first driving member drives the first closing member to open the first air outlet, the second driving member drives the second closing member to close the second air outlet.

[0011] Furthermore, the first driving member is a moving iron core.

[0012] Furthermore, the first sealing member is arranged in the valve cavity, and abuts against the connecting port connecting the valve cavity and the first air outlet.

[0013] Furthermore, a first restoring member is provided in the valve body, and the first closing member is reset under the action of the first restoring member.

[0014] Furthermore, the first restoring member is a spring, and the spring is sleeved on the first closing member.

[0015] Furthermore, the second driving member is a push rod, and the push rod abuts against the first driving member.

[0016] Furthermore, the second closing member is a steel ball, the steel ball is at least partially disposed on the second air outlet, and the push rod abuts against the steel ball.

[0017] Furthermore, a second resetting member is provided in the valve body, and the second closing member is reset under the action of the second resetting member.

[0018] Furthermore, the second restoring member is a spring.

[0019] Furthermore, a valve seat is threadedly connected to the valve body, and a fourth mounting hole for mounting a spring is provided on the valve seat.

[0020] Compared with the prior art, in the present application, when the air intake duct is connected to the first air duct, the air intake duct is not connected to the second air duct, and when the air intake duct is not connected to the first air duct, the air intake duct is connected to the second air duct, so that the present application is suitable for ice making machines, can realize two different working conditions of ice making and ice defrosting at the same time, and can also be used to adjust the compressor pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the solenoid valve of this application.

[0022] Figure 2 This is a schematic diagram of the structure of the valve body of the solenoid valve of this application.

[0023] Figure 3 This is a schematic diagram of the transverse cross-sectional structure of the solenoid valve of this application. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the embodiments of the accompanying drawings. In the following description, any concepts of directionality or orientation involving up, down, left, right, front and back are all for the position states shown in the figures being described, and therefore cannot be understood as a special limitation on the technical solution provided by the present application.

[0025] like Figure 1 and Figure 2As shown, the solenoid valve of the present application includes a valve body, on which an air inlet 11 and an air outlet are provided, the air outlets are two, one of which is a normally closed air outlet 12 and the other is a normally open air outlet 13, a valve cavity 14 is provided in the valve body, an air inlet 15, a first air outlet 16 and a second air outlet 17 are also provided on the valve body, one end of the air inlet 15 is connected to the air inlet 11, and the other end is connected to the valve cavity 14, one end of the first air outlet 16 is connected to the normally closed air outlet 12 One end of the second air outlet 17 is connected with the normally open air outlet 13, and the other end is connected with the valve cavity 14. The second air outlet 17 is L-shaped. In normal use, the air inlet is connected with the second air outlet through the valve cavity, and the air inlet is not connected with the first air outlet, that is, the normally closed air outlet is closed and the normally open air outlet is opened. When an abnormality occurs or the normally closed air outlet needs to be opened, the air inlet is connected with the first air outlet through the valve cavity, and the air inlet is not connected with the second air outlet.

[0026] The above-mentioned valve body includes a valve body 10 and a sleeve 20 detachably mounted on the valve body 10, the sleeve being mounted on the valve body 10 by threads, the above-mentioned valve cavity 14 being arranged above the valve body and exposed, and an internal thread for threaded connection of the sleeve 20 being arranged on the inner wall of the valve cavity 14 to facilitate fixed connection of the sleeve; a seal is arranged between the valve body 10 and the sleeve 20 to avoid air leakage.

[0027] like Figure 3 As shown, the valve body is provided with a first closing member 30 for closing the first air outlet 16, and the valve body is also provided with a first driving member 40 for driving the first closing member 30 to open the first air outlet 16. The first driving member 40 is a moving iron core, which is sleeved in the sleeve 20. The first closing member 30 is integrally formed on the moving iron core, and its end portion abuts against the air inlet end of the first air outlet 16 to close the first air outlet 16. The valve body is also provided with a first restoring member 50 for the first closing member 30 to close the first air outlet 16. The first restoring member is a spring. When the moving iron core is energized, the first closing member 30 is driven to open the first air outlet 16, so that the air inlet is connected to the first air outlet through the valve cavity. When the moving iron core is not energized, the moving iron core closes the first air outlet 16 under the action of the first restoring member.

[0028] The sleeve 20 is provided with a first mounting hole 21 for mounting the moving iron core and a second mounting hole 22 for mounting the first closing member 30. The first mounting hole 21 is a blind hole. The first mounting hole 21 is connected to the second mounting hole 22 and are coaxially arranged. The second mounting hole 22 is connected to the valve chamber 14. The aperture of the second mounting hole 22 is larger than that of the first mounting hole. A shoulder 23 is formed at the connection between the first mounting hole 21 and the second mounting hole 22.

[0029] The spring is sleeved on the first closing member 30 . A positioning block 31 for positioning the spring is integrally formed on the first closing member 30 , so that one end of the spring abuts against the hole shoulder 23 , and the other end of the spring abuts against the hole shoulder 23 .

[0030] The valve body is also provided with a second closing member 60 for closing the second air outlet 17. The second closing member 60 is a steel ball for closing the second air outlet 17. The valve body is provided with a second driving member 70 for opening the second air outlet 17. The second driving member 70 is a push rod. The push rod pushes the steel ball to open the second air outlet 17. The valve body is also provided with a second reset member 80 for closing the second air outlet 17. The second reset member 80 is also a spring. During normal use, the second air outlet is opened, that is, the push rod pushes the steel ball to open the second air outlet. At this time, the spring is compressed.

[0031] The push rod and the spring are respectively arranged at the two ends of the steel ball. The steel ball is arranged at the turning point of the L-shaped second air outlet to close the horizontal air outlet of the second air outlet. The push rod is sleeved on the vertical air outlet of the L-shaped second air outlet.

[0032] The valve body is provided with a third mounting hole 18 for mounting the second closing member 60 and the second reset member 80. The third mounting hole 18 is connected to the second air outlet. A valve seat 90 is threadedly connected to the third mounting hole 18. The valve seat 90 abuts against the second reset member 80 to adjust the elastic force of the second reset member.

[0033] The valve seat 90 is provided with a fourth mounting hole 91 , which is a blind hole. The second closing member 60 and the second restoring member 80 are mounted in the fourth mounting hole 91 .

[0034] The above-mentioned push rod is linked with the first closing member, that is, the push rod abuts against the first closing member. When the moving iron core is not energized, the first closing member closes the first air outlet. At this time, the push rod pushes the steel ball to contact the second reset member to open the second air outlet. When the moving iron core is energized, the moving iron core moves, forcing the first closing member to drive the first closing member away from the first air outlet to open the first air outlet. At this time, after the push rod is separated from the pressure of the first closing member, the steel ball moves into the second air outlet under the action of the second reset member to close the second air outlet, that is, the normally closed air outlet is opened and the normally open air outlet is closed.

[0035] The present application can be applied to an ice-making machine: the air inlet is connected to the compressor, the normally open air outlet is connected to the condenser, and the normally closed air outlet is connected to the evaporator. When ice is made, the refrigerant enters the condenser through the normally open air outlet; when defrosting is required, the coil is energized to drive the moving iron core to move, so that the normally closed air outlet is opened and the normally open air outlet is closed, and hot air directly enters the evaporator to quickly defrost.

[0036] The present application can also be used to adjust the compressor pressure: connect the air inlet to the compressor, connect the normally open air outlet to the condenser, connect the normally closed air outlet to the compressor suction port, and connect the wiring of the coil to the control circuit of the pressure controller. When the cooling capacity of the compressor is too large or the suction pressure is too low, the pressure controller controls the coil to energize, drive the moving iron core to move, open the normally closed air outlet, close the normally open air outlet, and discharge the excess pressure directly into the compressor suction port to avoid compressor cylinder flushing.

[0037] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present application, rather than limiting them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A solenoid valve, characterized in that: The solenoid valve comprises: A valve body, wherein a valve cavity is disposed in the valve body, an air inlet, a normally closed air outlet and a normally open air outlet are disposed on the valve body, an air inlet passage connecting the valve cavity with the air inlet, a first air outlet passage connecting the valve cavity with the normally closed air outlet, and a second air outlet passage connecting the valve cavity with the normally open air outlet are disposed on the valve body; A first closing member, installed in the valve body, for closing the first air outlet; A first driving member, installed in the valve body, for driving the first closing member to close or open the first air outlet; A second closing member, installed in the valve body, for closing the second air outlet; and a second driving member, installed in the valve body, for driving the second closing member to close or open the second air outlet, the second driving member being linked to the first driving member; Wherein, when the first driving member drives the first sealing member to seal the first air outlet, the second driving member drives the second sealing member to open the second air outlet; when the first driving member drives the first sealing member to open the first air outlet, the second driving member drives the second sealing member to seal the second air outlet; The first driving member is a moving iron core; the second driving member is a push rod, and the push rod abuts against the first driving member.

2. The solenoid valve according to claim 1, characterized in that The first sealing member is disposed in the valve cavity and abuts against a connecting port connecting the valve cavity and the first air outlet.

3. The solenoid valve according to claim 1, characterized in that A first resetting member is also provided in the valve body, and the first closing member is reset under the action of the first resetting member.

4. The solenoid valve according to claim 3, characterized in that :The first reset member is a spring, and the spring is sleeved on the first closing member.

5. The solenoid valve according to claim 1, characterized in that The second sealing member is a steel ball, which is at least partially disposed on the second air outlet, and the push rod abuts against the steel ball.

6. The solenoid valve according to claim 1, characterized in that A second resetting member is also provided in the valve body, and the second closing member is reset under the action of the second resetting member.

7. The solenoid valve according to claim 6, characterized in that :The second return member is a spring.

8. The solenoid valve according to claim 7, characterized in that : A valve seat is threadedly connected to the valve body, and a fourth mounting hole for mounting the spring is provided on the valve seat.

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