Slide-type switching valve and refrigeration cycle system equipped with said slide-type switching valve

Abstract

To provide a slide type switching valve capable of suppressing vibration of an electromagnetic drive unit, and a refrigeration cycle system comprising a bracket.SOLUTION: Since erect plate parts 2 of the bracket 1 are formed in a curved shape, it is easier to suppress deformation such as collapse when a force in an X direction is applied to the erect plate parts 2, compared to a planar configuration extending along a YZ plane. By supporting a valve body 120 of an electromagnetic drive unit 102 with outer edge parts 24 of such a pair of erect plate parts 2, it is possible to suppress vibration of the electromagnetic drive unit 102.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a slide-type switching valve and a refrigeration cycle system equipped with the slide-type switching valve. [Background technology]

[0002] Generally, in refrigeration cycle systems, a slide-type switching valve is used that performs switching control by sliding a valve element on a valve seat surface in a slide-type switching valve body using an electromagnetic drive unit. A conventional slide-type switching valve is a flow path switching valve that includes a mounting bracket for mounting a pilot drive unit as an electromagnetic drive unit (see, for example, Patent Document 1). The flow path switching valve described in Patent Document 1 has a pressing portion formed on the mounting bracket to suppress rattle of the pilot drive unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-112437 Summary of the Invention [Problem to be solved by the invention]

[0004] In the flow path switching valve described in Patent Document 1, while it was possible to suppress rattle between the mounting bracket and the pilot drive unit, it was difficult to suppress deformation of the mounting bracket itself. The electromagnetic drive unit includes a coil and a magnet, which tends to be heavy, making the mounting bracket prone to deformation and vibration. Furthermore, when vibration occurs in the electromagnetic drive unit, abnormal vibrations can occur depending on the relationship between the vibration direction and the operating direction of the electromagnetic drive unit. Therefore, it has been desired to suppress vibration of the electromagnetic drive unit using a member for attaching the electromagnetic drive unit to the slide-type switching valve body.

[0005] An object of the present invention is to provide a slide-type switching valve capable of suppressing vibration of an electromagnetic drive unit, and a refrigeration cycle system including the slide-type switching valve. [Means for solving the problem]

[0006] The slide-type switching valve of the present invention is a slide-type switching valve comprising: a slide-type switching valve body; an electromagnetic drive unit capable of controlling flow path switching by sliding the valve element of the slide-type switching valve body; and a bracket for attaching the electromagnetic drive unit to the slide-type switching valve body, wherein the slide-type switching valve body has a cylindrical valve body that houses the valve element, and the electromagnetic drive unit has an attractor, a coil that excites the attractor, a plunger that is moved by the attractor, and a cylindrical portion that houses the plunger and the attractor, and the bracket attaches the cylindrical portion to the outer circumferential surface of the valve body so that the axes of the valve body and the cylindrical portion extend along each other, and comprises a pair of upright plate portions that extend from the outer circumferential surface toward the outer circumferential side and are arranged side by side in the direction of the axis, and the upright plate portions extend along a plane that intersects with the direction of the axis, support the cylindrical portion on the outer circumferential side, and have a curved surface portion that includes at least one portion that is convex toward either side in the direction of the axis.

[0007] According to the present invention as described above, since the upright plate portions are formed in a curved shape, deformation such as tipping over when a force perpendicular to the upright plate portions is applied can be suppressed compared to a configuration in which the upright plate portions are flat and extend perpendicular to the axial direction of the sliding switch valve body and the electromagnetic drive unit. By supporting the cylindrical portion with the outer periphery of such a pair of upright plate portions, vibration of the electromagnetic drive unit (particularly vibration in the axial direction) can be suppressed.

[0008] In this case, in the slide type switching valve of the present invention, it is preferable that the inner edge of the upright plate portion on the side of the slide type switching valve body has an arc-shaped portion along the outer circumferential surface. With this configuration, when joining the bracket and the valve body by brazing or the like, the joining area therebetween can be increased and joining strength can be easily ensured.

[0009] In the slide-type switching valve of the present invention, it is preferable that the curvature of the arc-shaped portion of the inner edge portion is smaller than the curvature of the outer peripheral surface. With this configuration, when a part of the outer peripheral surface of the valve body of the slide-type switching valve body is brought into contact with the circumferential center of the inner edge portion of the upright plate portion, a small gap can be formed between the outer peripheral surface of the valve body and the inner edge portion of the upright plate portion at a position that circumferentially sandwiches this contact portion. In other words, during brazing, the brazing material can penetrate into this gap, improving the joining strength.

[0010] Furthermore, the sliding switch valve of the present invention preferably further includes legs extending from the inner edge portion toward either side of the axial direction and along the outer circumferential surface. With this configuration, when the bracket and the valve body are joined by brazing or the like, the joining area between them can be increased to ensure joining strength, and deformation of the upright plate portion can be suppressed. For example, if the upright plate portion is curved and has a pair of edge portions extending from the inner edge portion toward the outer circumferential side of the sliding switch valve body and a single protrusion between the pair of edge portions, the pair of edge portions may tend to deform so as to move closer to or farther away from each other (such that the curvature changes). The legs extend so as to intersect with the upright plate portion, thereby suppressing such deformation.

[0011] In addition, the slide-type switching valve of the present invention preferably further includes a top plate portion connecting outer edge portions of the pair of upright plate portions on the electromagnetic drive unit side, and the top plate portion preferably has a mounting surface that extends in a curved shape along the cylindrical portion and faces the cylindrical portion. With this configuration, when the bracket and the cylindrical portion are joined by brazing or the like, the joining area therebetween can be increased to ensure joining strength.

[0012] In the slide-type switching valve of the present invention, the top plate preferably has a plurality of protrusions protruding from the mounting surface. This configuration allows a gap to be formed between the mounting surface and the cylindrical portion, allowing the brazing material to penetrate into the gap during brazing, improving joint strength. Furthermore, the protrusions and the cylindrical portion can be temporarily fixed together by, for example, resistance welding, improving workability.

[0013] In addition, in the slide-type switching valve of the present invention, it is preferable that the curvature of the mounting surface is greater than the curvature of the cylindrical portion, and that at least one of the convex portions is provided on both sides of the circumferential center of the mounting surface. With this configuration, when the cylindrical portion and the convex portion are in contact with each other, it is easy to ensure a gap between the circumferential center of the mounting surface and the cylindrical portion, making it easy to perform the above-mentioned welding resistance. In other words, if the curvature of the cylindrical portion is large, the cylindrical portion is likely to enter between the convex portions on both sides of the center, making it easy for the cylindrical portion and the central portion to come into contact, but the above-mentioned curvature relationship makes it possible to prevent such entry of the cylindrical portion.

[0014] In the slide-type switching valve of the present invention, it is preferable that the top plate portion has a notch on at least one of a pair of edges extending along the axis. With this configuration, a portion of the electromagnetic drive portion that is formed to have a larger diameter or that protrudes than other portions (for example, a valve seat portion), a pipe, or the like can be arranged in the notch, and interference of these with the bracket can be prevented.

[0015] In the slide-type switching valve of the present invention, it is preferable that at least the pair of upright plate portions and the top plate portion are integrally formed from a single plate material. With this configuration, the bracket can be formed by, for example, plastically deforming the plate material by press working, thereby reducing manufacturing costs.

[0016] The refrigeration cycle system of the present invention is characterized by comprising a compressor that compresses a refrigerant fluid, a first heat exchanger that functions as a condenser in a cooling mode, a second heat exchanger that functions as an evaporator in the cooling mode, expansion means that expands and decompresses the refrigerant between the first heat exchanger and the second heat exchanger, and the slide selector valve described above. The refrigeration cycle system of the present invention can suppress vibration of the electromagnetic drive unit as described above. [Effects of the Invention]

[0017] According to the slide type switching valve and the refrigeration cycle system of the present invention, vibration of the electromagnetic drive unit can be suppressed. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram of a refrigeration cycle provided with a slide-type switching valve according to an embodiment of the present invention; [Figure 2] 4 is a plan view showing an electromagnetic drive unit attached to a slide-type switching valve body by a bracket in the slide-type switching valve. FIG. [Figure 3] 10 is a side view showing the state in which the electromagnetic drive unit is attached to the slide-type switching valve body by the bracket. FIG. [Figure 4] FIG. 2 is a perspective view showing the bracket as viewed from above. [Figure 5] FIG. 4 is a perspective view showing the bracket as viewed from below. [Figure 6] FIG. 4 is a bottom plan view showing the bracket. [Figure 7] FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. [Figure 8]FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] An embodiment of the present invention will be described with reference to the drawings. As shown in Figures 2 and 3, a slide type switching valve 200 of this embodiment includes a four-way switching valve body 101 as a slide type switching valve body, an electromagnetic driver 102 which is a pilot solenoid valve that controls switching of the flow path of the four-way switching valve body 101, and a bracket 1 for attaching the electromagnetic driver 102 to the four-way switching valve body 101, and constitutes a refrigeration cycle 100 as shown in Figure 1, for example. Note that the slide type switching valve may include a type of slide type switching valve body other than a four-way switching valve. The refrigeration cycle 100 is used in air conditioners such as room air conditioners, package air conditioners, and multi-air conditioners, and includes a compressor 103 that compresses a refrigerant as a fluid, an outdoor heat exchanger 104 as a first heat exchanger that functions as a condenser in cooling mode, an indoor heat exchanger 105 as a second heat exchanger that functions as an evaporator in cooling mode, an expansion valve 106 as expansion means that expands and reduces the pressure of the refrigerant between the outdoor heat exchanger 104 and the indoor heat exchanger 105, and a slide-type switching valve 200, all of which are connected by refrigerant piping. Note that the expansion means is not limited to the expansion valve 106, and a capillary may also be used.

[0020] 1, the refrigeration cycle 100 constitutes a cooling cycle in which a refrigerant flows in the order of compressor 103, four-way switching valve main body 101, outdoor heat exchanger 104, expansion valve 106, indoor heat exchanger 105, four-way switching valve main body 101, and compressor 103. On the other hand, in the heating mode (heating operation) indicated by dashed arrows, the refrigeration cycle 100 constitutes a heating cycle in which a refrigerant flows in the order of compressor 103, four-way switching valve main body 101, indoor heat exchanger 105, expansion valve 106, outdoor heat exchanger 104, four-way switching valve main body 101, and compressor 103. Switching between the heating cycle and the cooling cycle is performed by the switching operation of the four-way switching valve main body 101 by the electromagnetic drive unit 102.

[0021] The four-way selector valve body 101 is well known and comprises a cylindrical valve body 111, a slide valve 112 slidably provided inside the valve body and whose position can be switched, a high-pressure side conduit (D joint) 113 communicating with the discharge port of the compressor 103, a low-pressure side conduit (S joint) 114 communicating with the suction port of the compressor 103, an indoor side conduit (E joint) 115 communicating with the indoor heat exchanger 105, and an outdoor side conduit (C joint) 116 communicating with the outdoor heat exchanger 104. The valve body 111 has plugs 117 and 118 that close both axial ends thereof, and is configured as an entirely sealed cylinder, with spaces A11 and A12 formed therebetween that axially sandwich a piston 119 that moves the slide valve 112.

[0022] The electromagnetic actuator 102 of this embodiment is a well-known four-way valve having a valve body 120, a valve seat 121, a valve element 122, an electromagnetic actuator 123, and coupling members 124-127. The valve element 122 moves in a predetermined sliding direction (i.e., a moving direction) to switch the fluid flow path. That is, the electromagnetic actuator 123 includes a plunger 128, an attractor 129, and a coil 130. When the coil 130 is energized, the attractor is excited, and the valve element 122 held by the plunger 128 moves. When the electromagnetic actuator 102 switches the flow path, the high-pressure fluid in the high-pressure side conduit 113 is introduced into one of the spaces A11 and A12 that sandwich the piston 119 in the axial direction, and the low-pressure fluid in the low-pressure side conduit 114 is introduced into the other space, causing the piston 119 to move toward the low-pressure side space.

[0023] The bracket 1 attaches the valve body 120, which serves as the cylindrical portion of the electromagnetic actuator 102, to the outer peripheral surface 111A of the cylindrical valve body 111 of the four-way selector valve body 101. The axis of the valve body 111 and the axis of the valve body 120 extend parallel to each other (in this embodiment, they are parallel to each other), and the directions of these axes coincide with the sliding direction of the slide valve 112 and the valve disc 122. Hereinafter, the direction of the axes of the valve body 111 and the valve body 120 is referred to as the X direction, the direction in which the valve body 111 and the valve body 120 are aligned is referred to as the Z direction, and the direction perpendicular to both the X direction and the Z direction is referred to as the Y direction. The side of the valve body 111 in the Z direction (the side of the four-way selector valve body 101) may be simply referred to as the lower side, and the side of the valve body 120 (the side of the electromagnetic actuator 102) may be simply referred to as the upper side. These terms "upper" and "lower" are for convenience, and the Z direction does not necessarily coincide with the vertical direction.

[0024] 4 to 8, the bracket 1 includes a pair of standing plate portions 2, a top plate portion 3, and a pair of legs 4. The bracket 1 is formed by plastically deforming a single metal plate made of, for example, stainless steel by press working, and the pair of standing plate portions 2, the top plate portion 3, and the pair of legs 4 are integrally formed.

[0025] The upright plate portion 2 extends from the outer peripheral surface 111A of the valve body 111 in the four-way switching valve body 101 toward the outer periphery, and extends as a whole along the YZ plane, which is a plane perpendicular to the X direction, which is the direction of the axis. The pair of upright plate portions 2 are arranged side by side at a predetermined interval in the X direction, and are curved so as to be convex toward each other in the X direction. That is, the upright plate portion 2 is formed in a curved shape, having a pair of edge portions 21 extending along the Z direction and one convex portion 22 between the pair of edge portions 21 that is convex toward the other upright plate portion 2, and the entire upright plate portion is a curved portion.

[0026] The standing plate portion 2 has an upper inner edge portion 23 and a lower outer edge portion 24. The inner edge portion 23 is formed in an arc shape that follows the outer peripheral surface 111A of the valve body 111 of the four-way switching valve body 101, and is concave when viewed from the side of the four-way switching valve body 101. The outer edge portion 24 has a portion that is formed in an arc shape that follows the outer peripheral surface 120A of the valve body 120 of the electromagnetic drive unit 102, and is concave when viewed from the side of the electromagnetic drive unit 102. In addition, the outer edge portion 24 has portions that extend linearly in the Y direction on both sides of the arc-shaped portion.

[0027] The top plate portion 3 connects the outer edge portions 24 of the pair of upright plate portions 2, and has a curved portion 3A connecting the arc-shaped portions of the outer edge portions 24, and a pair of flat portions 3B connecting the linear portions. The curved portion 3A is formed in a curved shape (part of a cylinder) along the outer peripheral surface 120A of the valve body 120 of the electromagnetic drive unit 102, and the pair of flat portions 3B extend along the XY plane on both sides of the curved portion 3A in the Y direction. In other words, the curved portion 3A is concave when viewed from the electromagnetic drive unit 102 side. In this case, the outer edge portions 24 and the top plate portion 3 are smoothly connected, and the arc along which the outer edge portion 24 extends is part of the cylinder along which the curved portion 3A extends.

[0028] The top plate 3 has, on the curved surface 3A, an upward-facing mounting surface 31 and a plurality of (four in this embodiment) protruding portions 32 which are dimples protruding from the mounting surface 31, and each of the pair of flat surfaces 3B has a notch 33. This allows the outer peripheral surface 120A to come into contact with the protruding portions 32 rather than the mounting surface 31 when the valve body 120 is placed on the top surface of the top plate 3. The four protruding portions are arranged at the four corners of the top plate 3 which is rectangular when viewed from above (see FIG. 6).

[0029] The flat surface portion 3B has a cutout portion 33 formed on an edge extending along the X direction. A portion of the electromagnetic drive unit 102 that is formed with a larger diameter or that protrudes (for example, a valve seat portion), a pipe, or the like is placed in the cutout portion 33. Note that the electromagnetic drive unit 102 may be provided so that the valve seat portion protrudes from only one side in the Y direction, but by forming the cutout portions 33 on both sides, the valve seat portion can be placed in the cutout portion 33 even when the orientation of the bracket 1 is reversed 180°. The shape of the cutout portion 33 is not limited to a rectangular shape as shown in FIG. 6 and may be a V-shape, a U-shape, or the like.

[0030] The pair of leg portions 4 are continuous with the inner edge portions of the pair of standing plate portions 2, and are formed in a curved shape that follows the outer peripheral surface 111A of the valve body 111 of the four-way switching valve body 101. At this time, the inner edge portions 23 and the leg portions 4 are smoothly connected, and the arc along which the inner edge portions extend forms part of the cylinder along which the leg portions 4 extend. Furthermore, the leg portions 4 extend toward the side away from the other standing plate portions 2 in the X direction, that is, extend in the opposite direction from the convex portion 22 (i.e., toward the concave side).

[0031] In the bracket 1 as described above, the inner edge portion 23 and the leg portion 4 are joined to the outer peripheral surface 111A of the valve body 111 of the four-way selector valve body 101, for example, by brazing, and the outer edge portion 24 and the top plate portion 3 are joined to the outer peripheral surface 120A of the valve body 120 of the electromagnetic driver 102, for example, by brazing. In this way, the electromagnetic driver 102 is attached to the four-way selector valve body 101 via the bracket 1. The detailed shapes of such joints and a specific joining method will be described below.

[0032] The curvature of inner edge portion 23 and leg portion 4 is smaller than the curvature of outer peripheral surface 111A of valve body 111 of four-way selector valve body 101. That is, inner edge portion 23 and leg portion 4 have a gentler curve than outer peripheral surface 111A. As a result, when inner edge portion 23 and leg portion 4 are brought into contact with outer peripheral surface 111A, they partially contact each other. Specifically, when outer peripheral surface 111A is brought into contact with the center portions of inner edge portion 23 and leg portion 4 in the Y direction (i.e., the center portions in the circumferential direction), gaps are formed between inner edge portion 23 and leg portion 4 and outer peripheral surface 111A on both sides of this contact position in the Y direction.

[0033] When the inner edge portion 23 and the leg portion 4 are joined to the outer peripheral surface 111A by brazing, the brazing material flows into the gap.

[0034] The curvature of the arc-shaped portion of the outer edge portion 24 and the mounting surface 31 is greater than the curvature of the outer peripheral surface 120A of the valve body 120 of the electromagnetic drive unit 102. That is, the arc-shaped portion of the outer edge portion 24 and the mounting surface 31 have a tighter curve than the outer peripheral surface 120A. Also, as shown in Fig. 7, convex portions 32 are provided on both sides of a central portion 3C in the Y direction of the mounting surface 31 (i.e., a central portion in the circumferential direction).

[0035] By setting the curvature as described above, when the outer peripheral surface 120A comes into contact with the convex portions 32 on both sides of the central portion 3C, the outer peripheral surface 120A does not come into contact with the mounting surface 31 between the convex portions 32. In other words, the gap between the outer peripheral surface 120A and the mounting surface 31 between the convex portions 32 becomes larger as it approaches the central portion 3C. The difference in curvature is set to such an extent that the outer peripheral surface 120A does not come into contact with the Y-direction end portion of the mounting surface 31 or the flat portion 3B.

[0036] With the protrusions 32 in contact with the outer peripheral surface 120A as described above, they can be temporarily fixed by resistance welding, and then brazing can be performed for permanent fixation. When joining the arc-shaped portion of the outer edge 24 and the mounting surface 31 to the outer peripheral surface 120A by brazing, the brazing material flows into the gap formed as described above between the mounting surface 31 and the outer peripheral surface 120A.

[0037] According to the present embodiment described above, since the standing plate portions 2 are formed in a curved shape, deformation such as collapse when a force in the X direction is applied to the standing plate portions 2 can be more easily suppressed compared to a configuration in which the standing plate portions 2 are flat and extend along the YZ plane. By supporting the valve body 120 of the electromagnetic drive unit 102 with the outer edge portions 24 of such a pair of standing plate portions 2, vibration of the electromagnetic drive unit 102 (particularly vibration in the X direction) can be suppressed.

[0038] Furthermore, by forming the upright plate portion 2 into a curved surface and improving its rigidity, it is possible to increase the resonance frequency and facilitate the design of the four-way switching valve body 101 and the electromagnetic drive portion 102. Furthermore, by suppressing the vibration of the electromagnetic drive portion 102 as described above, it is possible to make the upright plate portion 2 thinner and reduce costs.

[0039] Furthermore, since the inner edge 23 of the standing plate portion 2 is formed in an arc shape along the outer peripheral surface 111A of the valve body 111 of the four-way switching valve body 101, when joining the bracket 1 and the valve body 111 by brazing or the like, the joining area between them is increased, making it easier to ensure joining strength.

[0040] Furthermore, since the curvature of the inner edge portion 23 is smaller than the curvature of the outer peripheral surface 111A, a small gap can be formed between the outer peripheral surface 111A and the inner edge portion 23, and the brazing material can penetrate into this gap, improving the joining strength.

[0041] Furthermore, by providing the bracket 1 with the legs 4, when joining the bracket 1 and the valve body 111 by brazing or the like, the joining area therebetween can be increased to ensure joining strength. Furthermore, because the legs 4 extend perpendicular to the standing plate portion 2, deformation such as bending of the standing plate portion 2 (such that the pair of edge portions 21 move closer to or farther away from each other) can be suppressed.

[0042] Furthermore, since the top plate portion 3 extends in a curved shape along the valve body 120 of the electromagnetic drive portion 102 and has a mounting surface 31 facing the valve body 120, when the bracket 1 and the valve body 120 are joined by brazing or the like, the joining area between them can be increased to ensure the joining strength.

[0043] Furthermore, since the top plate portion 3 has a plurality of protrusions 32 protruding from the mounting surface 31, a gap can be formed between the mounting surface 31 and the valve body 120, and during brazing, the brazing material can penetrate into this gap, improving the joining strength. Furthermore, the protrusions 32 and the valve body 120 can be temporarily fixed together by resistance welding, improving workability.

[0044] Furthermore, since the curvature of the mounting surface 31 is greater than that of the valve body 120 and the protrusions 32 are provided on both sides of the circumferential central portion 3C, when the valve body 120 and the protrusions 32 are in contact with each other, it is easy to ensure a gap between the circumferential central portion 3C and the valve body 120, making it easy to implement the above-mentioned welding resistance.

[0045] Furthermore, since the top plate portion 3 has a cutout portion 33 at the edge extending along the X direction, parts or pipes that are formed with a larger diameter or protrude more than others in the electromagnetic drive portion 102 can be placed in the cutout portion, preventing these from interfering with the bracket 1.

[0046] Furthermore, since the pair of standing plate portions 2, the top plate portion 3, and the pair of leg portions 4 are integrally formed from a single sheet of plate material, the bracket 1 can be formed, for example, by plastically deforming the plate material through press processing, thereby reducing manufacturing costs.

[0047] The present invention is not limited to the above-described embodiment, and includes other configurations that can achieve the object of the present invention, including modifications such as those described below. For example, in the above-described embodiment, the curvature of the inner edge portion 23 is smaller than the curvature of the outer peripheral surface 111A of the valve body 111 of the four-way switching valve body 101. However, these curvatures may be equal, or the curvature of the inner edge portion may be slightly larger. In other words, it is sufficient that the difference in curvature is large enough to allow the two to be joined together.

[0048] In the above embodiment, the legs 4 extend away from each other from the pair of standing plate portions 2, but the legs may extend toward each other or toward the same side in the axial direction. The legs may also extend toward the convex side of the standing plate portion. Furthermore, the legs may be omitted, for example, when the thickness of the standing plate portion is sufficiently large to ensure a sufficient bonding area with the outer peripheral surface 111A and prevent the standing plate portion from deforming.

[0049] In the above embodiment, the entire inner edge 23 of the upright plate portion 2 is formed in an arc shape, but only a portion of it may be formed in an arc shape. Furthermore, depending on the manner in which the bracket supports the valve body of the four-way switching valve and the connection structure, the inner edge does not have to have an arc-shaped portion. For example, the bracket and the valve body may have portions that engage with each other.

[0050] In addition, in the above embodiment, the curvature of the mounting surface 31 is greater than that of the valve body 120, but these curvatures may be equal to each other, or the curvature of the mounting surface may be slightly smaller. In other words, it is sufficient that the curvature difference is set to an extent that they can be joined together.

[0051] In addition, in the above embodiment, the top plate portion 3 has multiple protrusions 32 protruding from the mounting surface 31, but the protrusions may be omitted and the entire mounting surface may be configured to come into contact with the cylindrical portion of the electromagnetic drive unit.

[0052] In the above embodiment, the top plate 3 extends in a curved shape along the valve body 120 of the electromagnetic drive unit 102 and has a mounting surface 31 facing the valve body 120. However, depending on the manner in which the bracket supports the cylindrical portion of the electromagnetic drive unit and the connection structure, the top plate does not have to have a curved mounting surface. For example, the bracket and the cylindrical portion may be provided with portions that engage with each other.

[0053] Furthermore, in the above embodiment, the pair of standing plate portions 2, the top plate portion 3, and the pair of leg portions 4 are integrally formed from a single plate material, but the bracket may also be formed by joining multiple plate materials.

[0054] In the above embodiment, the notches 33 are formed on both edge portions of the top panel 3, but the notches may be formed on only one edge. Also, depending on the shape of each part of the electromagnetic drive unit, if interference is unlikely to occur, it is not necessary to form the notches.

[0055] In addition, in the above embodiment, the bracket 1 has the top plate portion 3, but the top plate portion may be omitted and the cylindrical portion of the electromagnetic drive unit may be supported only by the standing plate portions. Even with this configuration, the standing plate portions are less likely to deform, and the cylindrical portion between the pair of standing plate portions is also less likely to deform, so vibration of the electromagnetic drive unit can be suppressed.

[0056] In the above embodiment, the entire upright plate portion 2 is a curved portion, but only a portion of the upright portion may be a curved portion. The shape of the curved portion is not limited to a curved portion facing the other upright plate portion as in the above embodiment, but may be a curved portion facing the opposite side, or may have multiple convex portions to form a wavy shape. The convex shape may be a smooth curved surface, or may have a pointed apex.

[0057] Furthermore, the standing plate portion may be formed by combining a plurality of flat plate-like portions so as to be convex toward either side in the axial direction, for example, by combining two flat plate-like portions inclined with respect to the YZ plane to form a V-shaped standing plate portion, or by combining a flat plate-like portion extending along the YZ plane with a flat plate-like portion extending along the ZX plane to form a stepped standing plate portion as viewed in the Z direction. As long as the standing plate portion has a portion convex toward either side in the X direction (axial direction), even if it includes a flat plate-like portion, it will include an inclined surface by rotating around the Z direction with respect to the YZ plane, and deformation such as tipping over when a force in the X direction is applied can be suppressed.

[0058] Furthermore, the upright plate portion does not have to have a portion that is convex toward either side in the axial direction, but only needs to include a surface that is inclined by rotating about the Z direction (the opposing direction of the valve body and the cylindrical portion) with respect to the YZ plane (a plane perpendicular to the axial direction). For example, the pair of upright plate portions may be inclined with respect to the Y direction so that they approach each other in the X direction as they move from one side to the other in the Y direction.

[0059] The embodiments of the present invention have been described above in detail with reference to the drawings, but the specific configurations are not limited to these embodiments, and the present invention also includes design changes and the like that do not deviate from the gist of the present invention. [Explanation of symbols]

[0060] 1...bracket, 2...standing plate portion (curved portion), 23...inner edge portion, 24...outer edge portion, 3...top plate portion, 31...mounting surface, 32...convex portion, 33...notch portion, 4...leg portion, 100...refrigeration cycle, 101...four-way switching valve body (slide type switching valve body), 111...valve body, 111A...outer peripheral surface, 102...electromagnetic drive portion, 120...valve body (cylindrical portion), 103...compressor, 104...outdoor heat exchanger (first heat exchanger), 105...indoor heat exchanger (second heat exchanger), 106...expansion valve (expansion means), 200...slide type switching valve

Claims

1. A slide type switching valve comprising: a slide type switching valve body; an electromagnetic drive unit capable of controlling switching of a flow path by sliding a valve element of the slide type switching valve body; and a bracket for attaching the electromagnetic drive unit to the slide type switching valve body, The slide-type switching valve body has a cylindrical valve body that houses the valve element, the electromagnetic drive unit includes an attractor, a coil for exciting the attractor, a plunger moved by the attractor, and a cylindrical portion for accommodating the plunger and the attractor; the bracket attaches the cylindrical portion to an outer peripheral surface of the valve body so that axes of the valve body and the cylindrical portion extend along each other, and includes a pair of upright plate portions extending from the outer peripheral surface toward the outer periphery and arranged side by side in the direction of the axis, the upright plate portion extends along a plane intersecting the direction of the axis, supports the cylindrical portion on the outer periphery side, and has a curved surface portion including at least one portion that is convex toward either side in the direction of the axis, A slide-type switching valve, characterized in that the entire upright plate portion is the curved surface portion.

2. A slide type switching valve comprising: a slide type switching valve body; an electromagnetic drive unit capable of controlling switching of a flow path by sliding a valve element of the slide type switching valve body; and a bracket for attaching the electromagnetic drive unit to the slide type switching valve body, The slide-type switching valve body has a cylindrical valve body that houses the valve element, the electromagnetic drive unit includes an attractor, a coil for exciting the attractor, a plunger moved by the attractor, and a cylindrical portion for accommodating the plunger and the attractor; the bracket attaches the cylindrical portion to an outer peripheral surface of the valve body so that axes of the valve body and the cylindrical portion extend along each other, and includes a pair of upright plate portions extending from the outer peripheral surface toward the outer periphery and arranged side by side in the direction of the axis, the upright plate portion extends along a plane intersecting the direction of the axis, supports the cylindrical portion on the outer periphery side, and has a curved surface portion including at least one portion that is convex toward either side in the direction of the axis, The curved surface portion has an apex at the center in the width direction of the upright plate portion.

3. A slide-type switching valve as described in claim 1 or 2, characterized in that in the pair of upright plate portions, the curved portions are curved so as to be convex toward each other.

4. 3. The slide type switching valve according to claim 1, wherein an inner edge of the upright plate portion on the side of the slide type switching valve body has an arc-shaped portion along the outer circumferential surface.

5. 5. The slide-type switching valve according to claim 4, wherein the curvature of the arc-shaped portion of the inner edge is smaller than the curvature of the outer circumferential surface.

6. 5. The slide-type switching valve according to claim 4, further comprising a leg portion extending from the inner edge portion in one direction of the axis and along the outer circumferential surface.

7. a top plate portion connecting outer edge portions of the pair of upright plate portions on the electromagnetic drive unit side to each other, 3. The slide-type switching valve according to claim 1, wherein the top plate portion has a mounting surface that extends in a curved shape along the cylindrical portion and faces the cylindrical portion.

8. 8. The slide-type switching valve according to claim 7, wherein the top plate portion has a plurality of protrusions protruding from the mounting surface.

9. 9. The slide-type switching valve according to claim 8, wherein the curvature of the mounting surface is greater than the curvature of the cylindrical portion, and at least one of the convex portions is provided on both sides of the circumferential center portion of the mounting surface.

10. 8. The slide-type switching valve according to claim 7, wherein the top plate portion has a notch portion on at least one of a pair of end edges extending along the axial direction.

11. 8. The slide-type switching valve according to claim 7, wherein at least the pair of upright plate portions and the top plate portion are integrally formed from a single plate material.

12. 3. A refrigeration cycle system comprising: a compressor that compresses a refrigerant that is a fluid; a first heat exchanger that functions as a condenser in a cooling mode; a second heat exchanger that functions as an evaporator in the cooling mode; expansion means that expands and decompresses the refrigerant between the first heat exchanger and the second heat exchanger; and the slide-type switching valve according to claim 1 or 2.

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