Sliding block for reversing valve, reversing valve and air conditioner

Abstract

The utility model discloses a sliding block for a reversing valve, the reversing valve and an air conditioner, the sliding block for the reversing valve comprises a sliding block body, a bearing pin and a flow guide plate, and a flow guide cavity with an opening is formed in the sliding block body; the bearing pin is arranged at the opening and located in the flow guide cavity, and the two ends of the bearing pin are correspondingly installed on the two opposite wall faces of the flow guide cavity. The flow guide plate is arranged on the outer surface of the bearing pin and used for guiding flowing of a medium in the flow guide cavity. Therefore, when the sliding block is assembled and applied to the reversing valve and works, the uniformity of a flow field when a medium passes through the bearing pin can be improved, the turbulent flow of the medium in the flow guide cavity is reduced, the resistance loss of the medium is reduced, and the flow capacity of the medium when the reversing valve applying the sliding block works is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to reversing valves, and in particular relates to a sliding block for a reversing valve, a reversing valve and an air conditioner. Background Art

[0002] The reversing valve is used in air-conditioning equipment to change the flow direction of the refrigerant by changing the flow channel of the refrigerant, thereby changing the cooling and heating effects of the air-conditioning equipment.

[0003] The reversing valve mainly includes a valve seat and a slider, and the slider slides on the valve seat to change the flow channel on the valve seat for the refrigerant to flow, and to change the flow direction of the refrigerant. At present, the slider of the existing reversing valve is usually a plastic part. In order to improve the overall structural strength of the slider, it is usually necessary to assemble a smooth-surfaced pin in the guide chamber inside the slider for guiding the refrigerant. However, since the pin is arranged inside the guide chamber of the slider, the presence of the pin will affect the flow of the refrigerant in the guide chamber of the slider and reduce the uniformity of the flow of the refrigerant passing through the pin, thereby reducing the flow capacity of the medium when the reversing valve using the slider is working. Utility Model Content

[0004] In view of this, it is necessary to provide a slider for a reversing valve, a reversing valve and an air conditioner for solving the above-mentioned technical problems.

[0005] A slider for a reversing valve, the slider for the reversing valve comprising:

[0006] The slider body is provided with a flow guiding chamber having an opening;

[0007] A support pin is arranged at the opening and located in the diversion chamber, and two ends of the support pin are correspondingly installed on two opposite walls of the diversion chamber;

[0008] The guide plate is arranged on the outer surface of the bearing pin and is used to guide the flow of the medium in the guide chamber.

[0009] It can be understood that by arranging a guide plate on the underpinning, and using the guide plate to guide the medium in the guide chamber in the process of passing through the underpinning, when the slider is assembled and applied to the reversing valve and works, the uniformity of the flow field when the medium passes through the underpinning can be improved, the turbulence of the medium in the guide chamber can be reduced, and the resistance loss of the medium can be reduced, thereby improving the flow capacity of the medium when the reversing valve using the slider is working.

[0010] In one of the embodiments, the plane direction of the guide plate is perpendicular to the length direction of the support pin.

[0011] In one embodiment, there are multiple guide plates, and the guide plates are arranged in sequence and spaced apart along the length direction of the support pin.

[0012] It can be understood that multiple guide plates are arranged at intervals on the underpinning, so that the uniformity of the flow field of the medium in the guide chamber when passing through the underpinning can be further improved.

[0013] In one embodiment, the cross section of the underpin is configured as an ellipse;

[0014] Wherein, the long axis direction of the cross section on the underpin is the same as the flow direction of the medium in the slider body.

[0015] It can be understood that by setting the cross-section of the underpin to an ellipse, when the slider is assembled and applied to the reversing valve and working, the possibility of the medium generating vortex near the underpin can be reduced, thereby reducing the resistance loss of the medium. In this way, the flow capacity of the medium when the reversing valve using the slider is working can be further improved.

[0016] In one embodiment, the minor axis length of the underwriting cross section is set to a, and the major axis length of the underwriting cross section is set to b, wherein 0.5≥a / b≥0.2.

[0017] It can be understood that by setting the relationship between the minor axis length and the major axis length of the underpin cross section, the possibility of the medium generating vortex near the underpin can be further reduced.

[0018] In one embodiment, the guide plate and the support pin are connected as an integral structure.

[0019] It can be understood that the guide plate and the underpin are connected as one body, so that the underpin and the guide plate can be integrally injection molded, which facilitates the production and preparation of the underpin and reduces costs.

[0020] The present application also claims protection for a reversing valve, comprising a valve seat and the above-mentioned slider, wherein the slider is slidably mounted on the valve seat;

[0021] Among them, three connecting pipe channels are opened on the valve seat, and two adjacent connecting pipe channels among the three connecting pipe channels can be communicated with each other through the guide chamber of the slider.

[0022] In one embodiment, the two adjacent connecting passages are respectively set as a first connecting passage and a second connecting passage, and the medium in the first connecting passage can flow to the second connecting passage through the guide chamber of the slider;

[0023] The valve seat has a first arc surface at the outlet of the first connecting passage; and / or the valve seat has a second arc surface at the inlet of the second connecting passage.

[0024] It can be understood that the first arc surface and / or the second arc surface are used to guide the flow of the medium, which can improve the uniformity of the flow field distribution when the medium flows on the valve seat and reduce the resistance loss of the medium, thereby improving the flow capacity of the medium when the reversing valve is working.

[0025] In one embodiment, the arc radius of the first arc surface is set to R1, wherein 1mm≤R1≤3mm; and / or,

[0026] The arc radius of the second arc surface is set to R2, wherein 1mm≤R2≤3mm.

[0027] The present application also seeks protection for an air conditioner comprising the reversing valve described above.

[0028] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0029] The slider for the reversing valve, the reversing valve and the air conditioner for which protection is sought in the present application can improve the uniformity of the flow field when the medium flows, reduce the turbulence of the medium in the guide chamber, and reduce the resistance loss when the medium flows, thereby improving the flow capacity of the medium when the reversing valve is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the structure of a slider provided in one embodiment of the present application;

[0032] Figure 2 A schematic diagram of the structure of underwriting provided by an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of a reversing valve provided in one embodiment of the present application;

[0034] Figure 4 A cross-sectional view of a reversing valve provided in one embodiment of the present application;

[0035] Figure 5 for Figure 4 Enlarged view of the middle P part.

[0036] Figure numerals: 100, slider; 10, slider body; 11, guide chamber; 111, wall; 12, opening; 20, pin; 21, guide plate; 200, valve seat; 210, connecting pipe channel; 211, first connecting pipe channel; 2111, first arc surface; 212, second connecting pipe channel; 2121, second arc surface; 300, connecting pipe; 1000, reversing valve. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] like Figure 1 , Figure 2 As shown, a slider 100 for a reversing valve provided in an embodiment of the present application includes a slider body 10, a pin 20 and a guide plate 21. A guide chamber 11 having an opening 12 is provided on the slider body 10; the pin 20 is arranged at the opening 12 and is located in the guide chamber 11, and the two ends of the pin 20 are correspondingly mounted on two opposite walls 111 of the guide chamber 11; the guide plate 21 is mounted on the outer surface of the pin 20, and is used to guide the flow of the medium in the guide chamber 11. Here, the plane direction of the plane where the guide plate 21 is located is consistent with the flow direction of the medium in the guide chamber 11 when passing through the pin 20, so that the guide plate 21 can play a guiding role in the process of the medium passing through the pin 20.

[0041] As can be seen from the above, the slider 100 sets a guide plate 21 on the underpinning 20, and uses the guide plate 21 to guide the medium in the guide chamber 11 in the process of passing through the underpinning. In this way, when the slider 100 is assembled and applied to the reversing valve 1000 and works, the uniformity of the flow field when the medium passes through the underpinning 20 can be improved, the turbulence of the medium in the guide chamber 11 can be reduced, and the resistance loss of the medium can be reduced, that is, the pressure drop can be reduced. In this way, the flow capacity of the medium when the reversing valve 1000 using the slider 100 is working can be improved, and therefore, the Cv value of the reversing valve 1000 using the slider 100 is improved.

[0042] It can be understood that the underpin 20 is installed in the slider body 10 to support the slider body 10, so as to improve the overall structural strength of the slider 100. To this end, the slider 100 of the present application connects the guide plate 21 and the underpin 20 into an integrated structure, so that the underpin 20 can be integrally injection molded, which facilitates the production and preparation of the slider 100 and reduces costs.

[0043] like Figure 2 As shown, in one embodiment, the cross section of the underpin 20 is set to be an ellipse, wherein the major axis direction of the cross section on the underpin 20 is the same as the flow direction of the medium in the slider body 10. In this way, when the slider 100 is assembled and applied to the reversing valve 1000 and works, the possibility of the medium generating vortices near the underpin 20 can be reduced, which plays a role in reducing the resistance loss of the medium, thereby improving the flow capacity of the medium when the reversing valve 1000 using the slider 100 is working. Here, by utilizing the structural characteristics of the ellipse, the underpin 20 can reduce the resistance of the medium to the underpin 20 in the process of passing through the underpin 20 compared to the underpin with a circular cross section, and reduce the turbulence phenomenon and flow loss that occur when the medium flows in the guide chamber 11 of the slider body 10.

[0044] In this embodiment, the minor axis length of the cross section of the underpin 20 is set to a, and the major axis length of the cross section of the underpin 20 is set to b, wherein 0.5≥a / b≥0.2. This can further reduce the possibility of the medium generating vortices near the underpin 20.

[0045] like Figure 2 As shown, in one embodiment, the plane direction of the guide plate 21 is perpendicular to the length direction of the underpin 20. Here, when the cross section of the underpin 20 is an ellipse, the length direction of the underpin 20 is the axial direction of the underpin 20.

[0046] like Figure 2As shown, in one embodiment, the number of guide plates 21 is multiple, and the multiple guide plates 21 are arranged in sequence along the length direction of the underpin 20, so that two adjacent guide plates 21, or the wall surface 111 of the slider body 10 and the adjacent guide plates 21 can form a channel for the flow of the medium, and guide the flow of the medium, which can further improve the uniformity of the flow field of the medium when passing through the underpin 20. Here, the guide plate 21 is set as an annular structure, and the outer peripheral surface of the guide plate 21 can be set to match the ellipse of the cross section of the underpin 20. It should be noted that the number of guide plates 21 on the underpin 20 of this embodiment is 2-5, and the spacing between two adjacent guide plates 21 is equal. Of course, in other embodiments, the number of guide plates 21 on the underpin 20 can also be one, and the outer peripheral surface of the guide plate 21 can also be set to a square or other irregular shape, which will not be elaborated here.

[0047] like Figure 3 , Figure 4 As shown, the present application also provides a reversing valve 1000, comprising a valve seat 200 and the above-mentioned slider 100, wherein the slider 100 is slidably mounted on the valve seat 200; wherein, three connecting pipe channels 210 are provided on the valve seat 200, and two adjacent connecting pipe channels 210 among the three connecting pipe channels 210 can be connected through the flow guide chamber 11 of the slider 100. That is to say, when the reversing valve 1000 is working, the flow direction of the conducting medium on the valve seat 200 is changed by controlling the sliding of the slider 100 on the valve seat 200. It should be noted that the three connecting pipe channels 210 of the above-mentioned valve seat 200 can be respectively inserted with connecting pipes 300, so that the reversing valve 1000 can be connected with an external flow path by three connecting pipes 300.

[0048] like Figure 4 , Figure 5 As shown, the valve seat 200 of the present application sets two adjacent connecting channels 210 as a first connecting channel 211 and a second connecting channel 212 respectively, and the medium in the first connecting channel 211 can flow to the second connecting channel 212 via the flow guiding chamber 11 of the slider 100; wherein, the valve seat 200 is provided with a first arc surface 2111 at the outlet position of the first connecting channel 211; and / or, the valve seat 200 is provided with a second arc surface 2121 at the inlet position of the second connecting channel 212. When the reversing valve 1000 is working, the first arc surface 2111 and / or the second arc surface 2121 can be used to guide the flow of the medium, so that the uniformity of the flow field distribution when the medium flows on the valve seat 200 can be improved, and the resistance loss of the medium can be reduced, thereby improving the flow capacity of the medium when the reversing valve 1000 is working.

[0049] In this embodiment, the valve seat 200 is provided with a first arc surface 2111 at the outlet of the first connecting passage 211 ; and the valve seat 200 is provided with a second arc surface 2121 at the inlet of the second connecting passage 212 .

[0050] In this embodiment, the arc radius of the first arc surface 2111 of this embodiment is set to R1, wherein 1mm≤R1≤3mm; and / or, the arc radius of the second arc surface 2121 is set to R2, wherein 1mm≤R2≤3mm. Here, the arc radius of the first arc surface 2111 and the arc radius of the second arc surface 2121 both meet the above-mentioned size range.

[0051] The present application also provides an air conditioner, comprising the reversing valve 1000 described above.

[0052] In addition, it should be noted that the reversing valve 1000 of the present application is arranged with the above-mentioned structure, so that when the reversing valve 1000 is subjected to simulation test, it can be concluded that the turbulent kinetic energy of the reversing valve 1000 requested for protection in the present application on the low-pressure side when working is smaller than that of the existing reversing valve on the low-pressure side; at the same time, when the reversing valve 1000 conducts the medium, the pressure value at the outlet of the first connecting channel 211 and the pressure value at the inlet of the second connecting channel 212 can be detected by a pressure sensor (not shown in the figure), and finally the Cv value representing the medium flow capacity of the reversing valve 1000 when working is measured to be greater than the Cv value of the existing reversing valve.

[0053] In summary, the reversing valve 1000 for which protection is requested in the present application uses a guide plate 21 provided on the pin 20 to guide the medium when passing through the pin 20, thereby improving the uniformity of the flow field when the medium flows in the guide chamber 11 passing through the slider 100; by setting the cross-section of the pin 20 to an ellipse to reduce the possibility of the medium generating vortices near the pin 20, and by setting an arc surface at the inlet and outlet positions of the connecting channel 210 on the valve seat 200, the resistance encountered by the medium when entering and exiting the valve seat 200 is reduced, thereby reducing the pressure drop of the medium when the reversing valve 1000 is working, thereby improving the flow capacity of the medium when the reversing valve 1000 is working.

[0054] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A slider for a reversing valve, characterized in that: The slide block (100) for a reversing valve comprises: The slider body (10) is provided with a flow guiding chamber (11) having an opening (12); A support pin (20) is arranged at the opening (12) and is located in the flow guiding chamber (11), and two ends of the support pin (20) are correspondingly mounted on two opposite wall surfaces (111) of the flow guiding chamber (11); A guide plate (21) is arranged on the outer surface of the bearing pin (20) and is used to guide the flow of the medium in the guide chamber (11).

2. The slider for a reversing valve according to claim 1, characterized in that: The plane direction of the guide plate (21) is perpendicular to the length direction of the support pin (20).

3. The slider for a reversing valve according to claim 1, characterized in that: There are a plurality of guide plates (21), and the guide plates (21) are sequentially arranged at intervals along the length direction of the bearing pin (20).

4. The slider for a reversing valve according to claim 1, characterized in that: The cross section of the underpin (20) is arranged to be an ellipse; The long axis direction of the cross section of the support pin (20) is the same as the flow direction of the medium in the slider body (10).

5. The slider for a reversing valve according to claim 4, characterized in that: The short axis length of the cross section of the underpin (20) is set to a, and the long axis length of the cross section of the underpin (20) is set to b, wherein 0.5≥a / b≥0.

2.

6. The slider for a reversing valve according to claim 1, characterized in that: The guide plate (21) and the bearing pin (20) are connected to form an integrated structure.

7. A reversing valve, characterized in that: A valve seat (200) and a slider (100) according to any one of claims 1 to 6, wherein the slider (100) is slidably mounted on the valve seat (200); The valve seat (200) is provided with three connecting passages (210), and two adjacent connecting passages (210) among the three connecting passages (210) can be connected via the flow guide chamber (11) of the slider (100).

8. The reversing valve according to claim 7, characterized in that: The two adjacent connecting passages (210) are respectively set as a first connecting passage (211) and a second connecting passage (212), and the medium in the first connecting passage (211) can flow to the second connecting passage (212) via the flow guide chamber (11) of the slider (100); The valve seat (200) is provided with a first arc surface (2111) at the outlet position of the first connecting channel (211); and / or the valve seat (200) is provided with a second arc surface (2121) at the inlet position of the second connecting channel (212).

9. The reversing valve according to claim 8, characterized in that: The arc radius of the first arc surface (2111) is set to R1, wherein 1mm≤R1≤3mm; and / or, The arc radius of the second arc surface (2121) is set to R2, where 1mm≤R2≤3mm.

10. An air conditioner, characterized in that: The reversing valve (1000) comprises any one of claims 6-9.

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