KR102674493B1 - Switching valve and refrigeration system equipped with the same - Google Patents

Abstract

A switching valve comprising: a valve seat mechanism (10) provided with a receiving cavity, an inlet and a plurality of outlets, wherein the inlet and the plurality of outlets are all in communication with the receiving cavity; a drive mechanism (20) connected to the valve seat mechanism (10); and a slider 30 located within the receiving cavity. The drive mechanism 20 drives the slider 30 to move along the axial direction of the valve seat mechanism 10. Through this, the slider 30 has an avoidance position that avoids one or multiple exits. There are multiple avoidance positions. The slider movement space of the switching valve is larger than the movement range of the slide rotating in the circumferential direction. Therefore, the range in which the switching valve can be placed is larger, which is advantageous for installing the switching valve.

Description

Switching valve and refrigeration system equipped with the same

The present invention relates to the field of valve technology, and more specifically to a switching valve and a refrigeration system equipped therewith.

As people's living standards improve and refrigeration system technology develops, people's demanding standards for the functionality of refrigeration systems have become increasingly higher. The switching valve is one of the main components of the refrigeration system and plays a very important role in expanding the function of the refrigeration system.

Both the inlet and outlet of the existing switching valve are installed on the bottom of the switching valve, and the outlet is switched by rotating the slider. Due to the limitations of the volume and structure of switching valves in refrigeration systems, these switching valves cannot meet the required standards.

The main purpose of the present invention is to provide a switching valve and a refrigeration system equipped with the same in order to solve the problem that the switching valve cannot meet the required standards in the prior art.

To implement the above object, one aspect of the present invention provides a switching valve. It includes a valve seat mechanism equipped with a receiving cavity, an inlet and a plurality of outlets, where the inlet and the plurality of outlets are both in communication with the receiving cavity and each other; a drive mechanism interconnected with the valve seat mechanism; and a slider located within the receiving cavity. The drive mechanism drives the slider to move along the axial direction of the valve seat mechanism. This allows the slider to have an avoidance position that avoids one or multiple exits. There are multiple avoidance positions.

The valve seat mechanism also includes a valve seat and a valve core. The valve seat is a barrel-shaped structure with a bottom wall and side walls. The side wall of the valve seat is provided with a mounting hole. The valve core is mounted on the mounting hole. The plurality of outlets are all installed on the valve core.

The drive mechanism also includes a first elastic member and a drive rod. The first elastic member is located between the slider and the bottom wall of the valve seat and applies elastic force to the slider. The drive rod abuts on a side of the slider that is far from the first elastic member.

Additionally, the drive mechanism further includes a rotor and a nut. The rotor is fixedly connected to the driving rod. A nut is secured to the opening of the valve seat. A female thread matching the nut is installed on the drive rod. The drive rod is installed penetrating within the nut.

The drive mechanism also includes a housing having a mounting space. The housing is mounted in the opening of the valve seat. The nut, drive rod and rotor are all located within the housing.

Additionally, the driving mechanism further includes a stopper. The stopper is mounted on one end of the housing distal from the valve seat. The stopper has a position limiting hole that matches the driving rod. The drive rod is installed at least partially through the position limiting hole. The axis of the driving rod overlaps the axis of the position limiting hole.

Additionally, the root portion of the position limiting hole is provided with a balancing hole. The balance hole is in communication with the position restriction hall and the external space.

Additionally, the stopper has a position limiter that matches the rotor.

Additionally, the valve seat mechanism further includes a position limiting member. The position limiting member is mounted on the opening end of the valve seat and is located within the housing.

Additionally, the drive mechanism further includes a second elastic member. The second elastic member elastically abuts the side surface of the slider.

Additionally, the second elastic member is a spring piece. The first end of the spring piece is fixed between the nut and the valve seat. The second stage of the spring piece is the free end. The side surfaces of the spring pieces come into contact with the surface of the closed surface facing away from the slider.

Additionally, a plurality of outlets are installed on the valve core to be spaced apart from each other. The plurality of outlets are arranged in a row or in multiple rows.

Additionally, the contact surfaces between the slider and the plurality of outlets are flat or stepped surfaces.

Another aspect of the present invention provides a refrigeration system. This includes a refrigeration unit and a switching valve in communication with the refrigeration unit. The switching valve is the aforementioned switching valve.

By applying the technical solution of the present invention, when the slider of the switching valve moves within the valve seat mechanism, it moves along the axial direction of the valve seat mechanism. In this way, the space in which the slider moves is larger than the range of movement of the slider rotating in the circumferential direction. Therefore, the possible placement range for the switching valve becomes larger, making it more advantageous to install the switching valve. For example, more outlets can be installed on the switching valve to meet the requirements of refrigerator multi-function. The technical solution of the present invention effectively solves the problem that the switching valve of the prior art does not meet the requirements.

The specification and accompanying drawings constituting a part of the present invention are intended to aid further understanding of the present invention. The exemplary embodiments of the present invention and the description thereof are intended to interpret the present invention, but do not limit the present invention. Descriptions of the attached drawings are as follows.
Figure 1 is a cross-sectional view of an embodiment of a switching valve according to the invention.
Figure 2 is a side view of the switching valve in Figure 1;
Figure 3 is a top view of the switching valve in Figure 1;
4 to 6 are three structural diagrams of the valve core of the switching valve in FIG. 1.
Figures 7 to 9 are three structural diagrams of the slider of the switching valve in Figure 1.
10 to 13 are diagrams showing the opening state of four outlets under different situations.
Herein, the accompanying drawings include the following reference numbers.
10 is a valve seat mechanism, 11 is a valve seat, 12 is a valve core, 20 is a driving mechanism, 21 is a first elastic member, 22 is a driving rod, 23 is a rotor, 24 is a nut, 25 is a housing, 26 is a stopper, 27 is a position limiting member, 28 is a second elastic member, and 30 is a slider.

Note that the embodiments and features of the embodiments of the present application may be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and examples.

1 to 13, the switching valve of this embodiment includes a valve seat mechanism 10, a drive mechanism 20, and a slider 30. A receiving cavity, an inlet and a plurality of outlets are provided on the valve seat mechanism 10. Both the inlet and the plurality of outlets communicate with the receiving cavity. The drive mechanism 20 and the valve seat mechanism 10 are connected to each other. Slider 30 is located within the receiving cavity. The drive mechanism 20 drives the slider 30 to move along the axial direction of the valve seat mechanism 10. Through this, the slider 30 has an avoidance position that avoids one or more exits, and the avoidance positions are plural. That is, the avoidance position may be a position where only some exits among a plurality of exits are avoided, or it may be a position where all exits are avoided.

Applying the technical solution of this embodiment, when the slider 30 of the switching valve moves within the valve seat mechanism 10, it moves along the axial direction of the valve seat mechanism 10. In this way, the space in which the slider 30 moves is larger than the movement range of the slider 30 rotating in the circumferential direction. Therefore, the possible placement range for the switching valve becomes larger, making it more advantageous to install the switching valve. For example, more outlets can be installed on the switching valve to meet the requirements of refrigerator multi-function. The technical solution of this embodiment effectively solves the problem that the switching valve of the prior art does not meet the requirements.

Note that there are multiple outlets in this embodiment. The slider 30 can avoid one exit, or it can also avoid two, three, or four exits. The structure expands the range of use of the switching valve. When the slider 30 is in the initial position, all of the plurality of outlets can be closed, or both one and multiple outlets can be closed. For example, in Figure 10, if the slider is in its initial state, it may close the entire exit. In Figure 11, when the slider is in its initial state, the slider 30 avoids one exit. 12 and 13, when the slider is in its initial state, the slider 30 avoids the two exits.

1 to 6, in the technical solution of this embodiment, the valve seat mechanism 10 includes a valve seat 11 and a valve core 12. The valve seat 11 has a barrel-shaped structure with a bottom wall and side walls. The side wall of the valve seat 11 is provided with a mounting hole. The valve core 12 is mounted on the mounting hole. A plurality of outlets are all installed on the valve core 12. The installation of the above structure makes it possible to install a relatively large number of outlets of the switching valve. Additionally, the arrangement of the plurality of exits may take various forms. When used in this way, it can meet the requirements of making the refrigerator have a relatively large number of functions. As shown in Figures 10 to 13, outlet switching of the switching valve can be controlled through the design of the outlet position of the valve core and the structure of the slider 30. 10 to 13 show an embodiment with one inlet and four outlets. The inlet is P and the outlets are A, B, C and D respectively. In the figure, the abscissa is the pulse value and the unit is PDS. An electromagnetic induction coil is installed outside the housing 25. The valve core 12 and the valve seat 11 may have an integrated structure or a separate structure.

As shown in Figure 1, in the technical solution of this embodiment, the driving mechanism 20 includes a first elastic member 21 and a driving rod 22. The first elastic member 21 is located between the slider 30 and the bottom wall of the valve seat 11 and applies elastic force to the slider 30. The driving rod 22 abuts on a side of the slider 30 that is far from the first elastic member 21. The movement of the slider is implemented through the force applied together by the first elastic member 21 and the driving rod 22 on the slider 30. In the technical solution of this embodiment, the first elastic member 21 is a spring. To facilitate clear understanding, the top, bottom, left, and right sides of FIG. 1 are used as the top, bottom, left, and right sides of the slider 30 and the valve seat 11. The bottom surface of the slider 30 has a concave groove. The first end of the spring is located within the concave groove of the slider (30). A concave groove is provided on the top surface of the bottom wall of the valve seat 11. The second end of the spring is located in a concave groove on the top surface of the bottom wall of the valve seat 11. These springs are more stable. The driving rod 22 and the slider 30 only contact each other but are not connected. The sealing surface of the slider 30 is flat and may be an arcuate surface. Steps, concave grooves, etc. may be installed on the sealing surface of the slider 30 as needed. The plurality of outlets of the valve core 12 may be arranged in a row or in multiple rows. In this way, the conversion diagrams of FIGS. 10 to 13 can be obtained according to different installations of the slider 30 and the valve core 12. For example, matching the valve core of FIG. 4 and the slider of FIG. 8 can obtain the conversion diagram of the switching valve of FIG. 10. Specifically, as can be seen in FIG. 10, when the slider 30 slides to the first dotted line position on the left side of FIG. 10, the exit A is opened. At this time, the slider 30 is located in the first situation of the avoidance position. When the slider 30 moves to the middle dotted line position, the outlet A, outlet B, and outlet C are opened simultaneously. At this time, the slider 30 is located in the second situation of the avoidance position. When the slider 30 moves to the position of the dotted line on the right side of Figure 10, the outlet (A), outlet (B), outlet (C), and outlet (D) are all opened. At this time, the slider 30 is located in the third situation of the avoidance position. Therefore, the avoidance positions are plural.

Figure 11 is a conversion diagram in which the slider of Figure 7 and the valve core of Figure 6 are matched to each other. Figure 12 is a conversion diagram in which the slider of Figure 9 and the valve core of Figure 4 are matched to each other. FIG. 13 is a conversion diagram in which the slider of FIG. 9 and the valve core of FIG. 4 are matched to each other in the reverse direction.

As shown in Figure 1, in the technical solution of this embodiment, the drive mechanism 20 further includes a rotor 23 and a nut 24. The rotor 23 is fixedly connected to the driving rod 22. A nut (24) is fixed to the opening of the valve seat (11). A female thread matching the nut 24 is installed on the driving rod 22. The drive rod 22 is installed through the nut 24. A male thread is installed on the drive rod 22 and matches the female thread of the nut 24. In this way, the rotation of the drive rod 22 can be converted into a parallel movement along the axial direction of the switching valve of the drive rod 22 .

As shown in Figure 1, in the technical solution of this embodiment, the drive mechanism 20 further includes a housing 25 with a mounting space. The housing 25 is mounted on the opening of the valve seat 11. Nut 24, drive rod 22 and rotor 23 are all located within housing 25. The structure is compact and occupies a relatively small space. The housing 25 has a barrel-shaped structure. The housing 25 has a top surface and a side wall, and the lower part of the housing 25 is an opening. The inner diameter of the housing 25 and the outer diameter of the valve seat 11 match each other, and the upper diameter of the valve seat 11 is slightly smaller than the middle diameter of the valve seat 11. This makes it easy to install the housing 25 and the valve seat 11.

As shown in Figure 1, in the technical solution of this embodiment, the drive mechanism 20 further includes a stopper 26. The stopper 26 is mounted on one end of the housing 25 farthest from the valve seat 11. The stopper 26 has a position limiting hole that matches the driving rod 22. The drive rod 22 is installed at least partially through the position limiting hole. The axis of the drive rod 22 overlaps the axis of the position limiting hole. Installation of the position limit hole prevents the drive rod 22 from being easily misaligned when it moves.

As shown in Figure 1, in the technical solution of this embodiment, the root portion of the position limiting hole is provided with a balancing hole. The balance hole communicates with the position limit hole and the external space. The middle portion of the stopper 26 has a downwardly extending portion. The position limiting hole is installed within the extension part. This ensures that the air pressure in the position limiting hole does not limit the driving rod 22 when the driving rod 22 moves up and down.

As shown in Figure 1, in the technical solution of this embodiment, the stopper 26 is provided with a position limiter that matches the rotor 23. The position limiting portions of the rotor 23 and the stopper 26 are matched, which ensures that the moving position of the rotor 23 does not exceed the limit height. Note that the valve seat mechanism 10 further includes a position limiting member 27. The position limiting member 27 is mounted on the opening end of the valve seat 11 and is located within the housing 25. This can prevent the rotor 23 from moving down too low and exceeding the limit distance.

As shown in Figure 1, in the technical solution of this embodiment, the driving mechanism 20 further includes a second elastic member 28. The second elastic member 28 elastically abuts the side surface of the slider 30. The above structure can prevent displacement or movement of the slider 30 due to vibration of the switching valve. Note that the inlet of the valve seat 11 and the mounting port of the valve seat 11 are installed opposite each other, and the second elastic member 28 is located close to the inlet side. This makes it possible to apply an acting force toward the outlet to the slider 30 when fluid flows in from the inlet. This is advantageous for the sealing effect of the switching valve.

As shown in Fig. 1, in the technical solution of this embodiment, the second elastic member 28 is a spring piece. The first end of the spring piece is fixed between the nut 24 and the valve seat 11. The second stage of the spring piece is the free end. The side surface of the spring piece is in contact with the surface of the closed surface facing away from the slider. The structure is easy to install and has a tight structure.

4 to 6, in the technical solution of this embodiment, a plurality of outlets are installed on the valve core 12 to be spaced apart from each other. The plurality of outlets are arranged in a row or in multiple rows. The above structure makes switching of the switching valve relatively flexible. Specifically, the arrangement of multiple outlets can be installed as needed.

As shown in FIGS. 7 to 9, in the technical solution of this embodiment, the contact surfaces of the slider 30 and the plurality of outlets are flat or stepped surfaces. Through matching installation of the structure of the slider 30 and the valve core 12, a relatively large number of switching methods can be created. Specifically, refer to Figures 10 to 13 attached to the specification. Of course, the switching method of the switching valve is not limited to the switching method of FIGS. 10 to 13.

The present application further provides a refrigeration system. The refrigeration system includes a refrigeration unit and a switching valve in communication with the refrigeration unit and in accordance with the present invention. This allows the refrigeration system to have a variety of selectable functional modes. For example, when the refrigeration system is a refrigerator, the refrigerator has functions of freezing, refrigerating, and preventing ice from freezing at 0 degrees.

The above contents are only preferred embodiments of the present invention and do not limit the present invention. A person skilled in the art to which the present invention pertains may make various modifications and changes to the present invention. All modifications, equivalent replacements, improvements, etc. made within the scope of the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (19)

In the switching valve,
A valve seat mechanism (10) provided with a receiving cavity, an inlet and a plurality of outlets, wherein the inlet and the plurality of outlets are both in communication with the receiving cavity.
a drive mechanism (20) connected to the valve seat mechanism (10); and
Comprising a slider (30) located within the receiving cavity,
The driving mechanism 20 drives the slider 30 to move along the axial direction of the valve seat mechanism 10, so that the slider 30 has an avoidance position that avoids one or a plurality of the outlets. , the avoidance positions are plural,
The valve seat mechanism (10) includes a valve seat (11),
The drive mechanism 20 includes a drive rod 22, a rotor 23 and a nut 24, where the rotor 23 is fixedly connected to the drive rod 22 and the nut 24. is fixed to the opening position of the valve seat 11, and a female thread matching the nut 24 is installed on the driving rod 22, and the driving rod 22 is installed through the nut 24. A switching valve characterized in that According to paragraph 1,
The valve seat mechanism (10) includes a valve core (12),
The valve seat 11 has a barrel-shaped structure having a bottom wall and a side wall, the side wall of the valve seat 11 is provided with a mounting hole, the valve core 12 is mounted on the mounting hole, and the plurality of A switching valve, characterized in that all outlets are installed on the valve core (12). According to paragraph 2,
The drive mechanism (20) includes a first elastic member (21),
The first elastic member 21 is located between the slider 30 and the bottom wall of the valve seat 11 to apply an elastic force to the slider 30, and the driving rod 22 is positioned between the slider 30 and the bottom wall of the valve seat 11. ) of the switching valve, characterized in that it abuts on one side farthest from the first elastic member (21). In the driving structure,
a valve seat mechanism (10) comprising a valve seat (11) and a valve core (12); and
a drive mechanism (20) connected to the valve seat mechanism (10) and comprising a drive rod (22);
The drive mechanism 20 further includes a rotor 23 and a nut 24, the rotor 23 is fixedly connected to the drive rod 22, and the nut 24 is connected to the valve seat ( It is fixed to the opening of 11), and a female thread matching the nut 24 is installed on the driving rod 22, and the driving rod 22 is installed through the nut 24. struct. In paragraph 1
The drive mechanism (20) further includes a housing (25) with a mounting space, the housing (25) mounted in the opening of the valve seat (11), the nut (24), the drive rod (22) and the rotor (23) is both located within the housing (25). According to clause 5,
The drive mechanism 20 further includes a stopper 26, the stopper 26 is mounted on an end of the housing 25 distal from the valve seat 11, and the stopper 26 is connected to the drive rod. (22), the driving rod 22 is installed at least partially through the position limiting hole, and the axis of the driving rod 22 overlaps the axis of the position limiting hole. switching valve. According to clause 6,
A switching valve, characterized in that the root portion of the position limiting hole is provided with a balancing hole, and the balancing hole communicates with the position limiting hole and an external space. According to clause 6,
The stopper (26) is a switching valve, characterized in that it has a position limiter that matches the rotor (23). According to clause 6,
The valve seat mechanism 10 further includes a position limiting member 27, and the position limiting member 27 is mounted on the opening end of the valve seat 11 and positioned within the housing 25. switching valve. According to paragraph 1,
The switching valve, characterized in that the drive mechanism (20) further includes a second elastic member (28), the second elastic member (28) elastically abutting the side surface of the slider (30). According to clause 10,
The second elastic member 28 is a spring piece, the first end of the spring piece is fixed between the nut 24 and the valve seat 11, the second end of the spring piece is a free end, and the spring piece A switching valve, characterized in that the side contacts the surface of the closing surface facing away from the slider. According to paragraph 2,
A switching valve, wherein the plurality of outlets are installed on the valve core 12 to be spaced apart from each other, and the plurality of outlets are arranged in a row or in multiple rows. According to paragraph 1,
A switching valve, characterized in that the contact surface between the slider (30) and the plurality of outlets is a flat or stepped surface. In the refrigeration system,
A refrigeration system comprising a refrigeration unit and a switching valve in communication with the refrigeration unit, wherein the switching valve is the switching valve according to any one of claims 1 and 5 to 13. In paragraph 4
The drive mechanism (20) further includes a housing (25) with a mounting space, the housing (25) mounted in the opening of the valve seat (11), the nut (24), the drive rod (22) and the rotor (23) is a drive structure, characterized in that both are located within the housing (25). According to clause 15,
The drive mechanism 20 further includes a stopper 26, the stopper 26 is mounted on an end of the housing 25 distal from the valve seat 11, and the stopper 26 is connected to the drive rod. (22), the driving rod 22 is installed at least partially through the position limiting hole, and the axis of the driving rod 22 overlaps the axis of the position limiting hole. A driving structure called . According to clause 16,
A driving structure characterized in that the root portion of the position limiting hole is provided with a balancing hole, and the balancing hole communicates with the position limiting hole and an external space. According to clause 16,
The stopper (26) is a driving structure characterized in that it has a position limiter that matches the rotor (23). According to clause 16,
The valve seat mechanism 10 further includes a position limiting member 27, and the position limiting member 27 is mounted on the opening end of the valve seat 11 and positioned within the housing 25. A driving structure that does.