Valves for controlling the coolant circuit

Abstract

To enable sealing control in position switching regardless of the direction of a coolant flow through a valve.SOLUTION: A valve has a regulating chamber provided in a housing 12 and extends between an inlet opening and outlet openings 34, 35. The valve is provided in the housing and has a plug-in opening adjacent to the regulating chamber. The valve has a valve device that is at least partially insertable into the regulating chamber, and is capable of controlling the flow path of a medium between the inlet opening and the outlet openings. The valve has a rotary sliding device of the valve device, which is arranged in the regulating chamber. The rotary sliding device has a control disc that is rotatable relative to a rotary sliding support. The rotary sliding support is provided non-rotatably with respect to the housing and is assigned to the outlet openings. The sliding support is mounted floatingly on the housing.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a valve for controlling a coolant circuit of a refrigeration system, preferably with a heat pump function.

Background Art

[0002] A multi-way valve for controlling a coolant circuit is known from German Patent Application Publication No. 102017102841. This multi-way valve has a housing, in which a valve device is provided with a rotary sliding device. The housing has first and second inlet openings and is connected to an adjustment chamber. The first and second outlet openings in the housing are also connected to the adjustment chamber. The rotary sliding device is controlled via a shaft driven by a motor. Several switching positions for controlling the coolant circuit, as well as a service position, can be controlled by such a multi-way valve.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to propose a valve with a rotary sliding device for controlling a coolant circuit, which enables sealing control during position switching regardless of the direction of the coolant flow through the valve.

Means for Solving the Problems

[0005] This objective is addressed by a valve for controlling the coolant circuit. In this valve, the rotary sliding device of the valve mechanism comprises a control disc and at least one rotary sliding support. The control disc is rotatable relative to the rotary sliding support, is non-rotatably mounted within the housing, and is assigned to at least two outlets within the housing. Here, the rotary sliding support is housed in a floating manner within the housing. The floating nature of the rotary sliding support has the advantage that the rotary sliding support is positioned within the housing without being subjected to stress. Thus, planar contact between at least the rotary sliding support and the control disc is possible, thereby ensuring a firm arrangement between the control disc and at least one rotary sliding device, regardless of the direction of coolant flow and / or switching position.

[0006] Preferably, the rotating sliding support is mounted axially within the housing in a floating manner, toward the longitudinal axis of at least one outlet opening. This rotating sliding support can be positioned within the housing without being subjected to internal forces toward at least one outlet opening. Therefore, no internal or holding forces that could cause non-planar contact with the control disk and thereby cause leakage can act on the rotating sliding support.

[0007] Preferably, the rotating sliding support is held by a receiving adapter that can be connected to the housing. Therefore, internal or holding forces can be received by the receiving adapter for non-rotating the rotating sliding support in the housing. The internal or holding force acts only between the receiving adapter and the housing. The rotating sliding support can be mounted floatingly or held without internal forces, preferably axially with respect to the longitudinal direction of at least one outlet opening.

[0008] Furthermore, preferably, the receiving adapter is provided with an elastically flexible element between its end face and the support face of the rotating sliding support, which is opposite the sealing face facing the control disk. This allows the rotating sliding support to be held with minimal space or axial clearance relative to the end face of the receiving adapter. This allows even small angular deviations from the longitudinal axis of the valve device to be compensated for by this elastically flexible element when the control disk, which controls the flow of the coolant itself, rotates. This allows for a flat mounting of the rotating sliding support to the control disk and the sealing design of the rotating sliding device to be maintained.

[0009] The elastically flexible element between the rotating sliding support and the receiving adapter is preferably provided in a recess on the end face of the receiving adapter. Alternatively, the elastically flexible element may be provided in a recess of the rotating sliding support or on the support surface of the rotating sliding support. Thus, a structurally simple design can be created. Preferably, the elastically flexible element can be provided in a positionally fixed manner in the recess. This recess is formed in an annular shape, each enclosing an outlet opening, or at least two outlet openings simultaneously. Preferably, the recess may have an inclination that faces toward the passage opening of the adapter receiver. This allows the elastically flexible element to be held fixed radially outward to ensure that it is firmly positioned in the recess.

[0010] The receiving adapter for receiving the rotating sliding support preferably has a retaining portion surrounding the end face and is provided on the outer circumference of the end face. This retaining portion engages with a fixing portion provided on the outer circumference of the rotating sliding support. Thus, on the one hand, the rotating sliding support can be fixedly held radially with respect to the receiving adapter, and on the other hand, it can be positioned with an axial gap with respect to the end face of the receiving adapter, which is radially aligned with the longitudinal axis of the outlet opening in the housing.

[0011] The holding portion of the receiving adapter may have a cylindrical peripheral surface based on an end face, through which the fixed portion of the rotating sliding support is guided to the center, and the side ends of the end face of the peripheral surface may be provided with gripping edges. These gripping edges engage around or behind the fixed portion. As a result of such a design, it may also be possible to enable easy attachment of the rotating sliding support to the receiving adapter, and in detail, the design of the gripping portion may be made of a material that can be bent, pressed, or pressed, for example.

[0012] Advantageously, the axial gap between the support surface and the end face of the rotating sliding support can be determined by the height of the cylindrical peripheral surface and / or the length of the gripping element of the holding portion and / or the height of the fixed portion of the rotating sliding support. Advantageously, this axial gap is designed to be greater than 0.01 mm. Thus, the elastically flexible element can hold the support surface of the rotating sliding support away from the end face of the receiving adapter.

[0013] A more preferred design for the receiving adapter is to provide at least one insert sleeve, which can be inserted into at least one outlet opening in the valve housing. In this way, the receiving adapter can be easily installed and fixed in place.

[0014] According to a preferred embodiment, the insert sleeve is pressed into the outlet opening of the receiving adapter. Thus, a sealing device between the insert sleeve and the housing can be created in a simple manner. Alternatively, a sealing element, more specifically a sealing ring or an O-type annular seal, can also be used to seal between the insert sleeve and at least one outlet opening in the housing.

[0015] At least one spring element is provided between the receiving adapter and the base of the housing, and adjacent to the outlet opening. This allows the receiving adapter to be mounted axially movable relative to the base of the housing. The base of the housing simultaneously forms the limiting portion of the adjustment chamber. Due to this elasticity, tolerances of the valve device and / or the adjustment chamber of the housing, as well as temperature-dependent variations, can be compensated for. The valve device can be used through an insertion opening into the housing, and the rotating sliding device is positioned in the adjustment chamber with the adapter receiver facing it.

[0016] The spring element for reflexibly receiving the receiving adapter into the housing or at least one outlet opening of the housing can be formed as a corrugated spring, coil spring, disc spring, rubber spring element, or O-ring seal. Such spring elements can be selected and used depending on the general pressure in the adjustment chamber and other external shape requirements.

[0017] The rotating sliding support is preferably formed from ceramic. For most parts, the control disc is also formed from ceramic, so that a pair of the same material forming the rotating sliding device abuts against each other. Alternatively, the rotating sliding support can also be formed from metal, which may have a polished or notched surface and / or a sliding coating, or may be made of plastic with a sliding coating.

[0018] The adapter receiver is preferably formed from a metallic material. This can be selected in terms of the medium to be controlled. For example, noble metals or light metals can also be used.

[0019] According to a preferred embodiment of the valve, the receiving adapters can be inserted into each outlet opening of the housing, and each receiving adapter receives only one rotary sliding receiver. Thus, for example, with two outlet openings, each rotary sliding support independent of the other can abut the control disk at its sealing surface and, independently of the other rotary sliding support, can compensate for tolerances for offset and / or sealed devices.

[0020] According to another preferred embodiment of the valve, a radius R1 is provided from the longitudinal axis of the outlet opening or the inlet opening to the sealing line of the housing. There, a sealing ring abuts to seal the mounting opening or the inlet opening radially with respect to the housing. Further, a radius R2 is provided from the longitudinal axis of the outlet opening or the inlet opening to the sealing line formed between the rotary sliding part and the rotary sliding support. The ratio of R1:R2 is in the range of 0.25 to 4. Thus, depending on the acting pressure and / or their acting direction, the pressing force of the rotary sliding body in the rotary sliding support or the release or lifting and lowering of the rotary sliding part from the rotary sliding support is set.

[0021] The present invention, and another advantageous embodiment and development of the present invention, will be described and explained in more detail below by way of the examples shown in the drawings. According to the present invention, the features that can be confirmed in the description and the drawings can be applied individually or jointly in any combination.

Brief Description of the Drawings

[0022] [Figure 1] It is a perspective view of a multi-way valve. [Figure 2] It is a schematic side view of the multi-way valve according to FIG. [Figure 3] It is a schematic longitudinal sectional view of the multi-way valve according to FIG. [Figure 4] It is a schematic enlarged sectional view of the multi-way valve device of the multi-way valve according to FIG. [Figure 5] It is a schematic enlarged view of the rotary sliding device according to FIG. [Figure 6] It is a schematic enlarged cross-sectional view in an alternative embodiment of the rotary sliding device according to FIG. 5. [Figure 7] It is a schematic cross-sectional view in another alternative embodiment of the rotary sliding device according to FIG. 3 or FIG. 4. [Figure 8] It is a schematic enlarged view in another alternative embodiment of the rotary sliding device according to FIG. 5. [Figure 9] It is a schematic view of the alternative device of FIG. 8. [Figure 10] It is a schematic view of another alternative device of FIG. 9. [Figure 11] It is a schematic cross-sectional view of an alternative embodiment of the valve of FIG. 1.

Embodiments for Carrying Out the Invention

[0023] In FIG. 1, a perspective view of the valve 11 is shown. This valve 11 is formed as a multi-way valve. This multi-way valve can function to control the coolant circuit 12 of a refrigeration system with a heat pump function.

[0024] This valve 11 includes a housing 12, which has, for example, a rectangular cross-section. This housing 12 has a mounting interface 14 on the end face, where, for example, holes are provided for mounting clamping elements. Ports 16 for the supply or discharge of coolant are provided on another side surface. The first valve device 21 and the second valve device 22 on the opposite side are arranged on the end face 18 and the opposite end face 19 of the housing 12. In either case, only one drive unit 23 is provided for these valve devices 21, 22. The valve devices 21, 22 will be described in more detail below with reference to the cross-sectional views according to FIGS. 3 to 5.

[0025] In the side view of the valve 11 according to FIG. 2, three other ports 25, 26, 27 are provided, for example, on another side surface of the housing 12. These ports 25, 26, 27 are preferably provided on a side surface aligned parallel to the longitudinal axis 24 of the drive unit 23.

[0026] According to another preferred embodiment of the valve 11, all ports 16, 25, 26, and 27 are located on the side surfaces of the housing 12. Alternatively, ports 16, 25, 26, and 27 may be provided on each side surface of the housing. The number of ports per side surface 12 of the housing and their alignment can be adapted to the configuration.

[0027] Figure 3 shows a longitudinal cross-section of the valve 11 according to Figure 1. Only a portion of the drive units 23 of the first valve device 21 and the second valve device 22 are shown.

[0028] This longitudinal section shows that the housing 12 of the valve 11 is preferably formed as a single piece. In either case, insertion openings 29, 30 are provided on the end faces 18, 19, and adjustment chambers 29, 30 are fitted therein, respectively. The first port 25 is assigned to the adjustment chamber 31. Two channels 34, 35 are provided between the two adjustment chambers 31, 32, with one channel 34 connected to port 26 and the other channel 35 connected to port 27. The second adjustment chamber 32, on the opposite side of the first adjustment chamber 31, is connected to port 16.

[0029] The valve 11 receives a first valve device 21 and a second valve device 22 located opposite each other in the housing 12. These can be inserted into corresponding adjustment chambers 31 and 32 via insertion openings 29 and 30, respectively, and can be secured within them via releasable fastening means, though not shown in detail. The valve devices 21 and 22 have the same structure. They comprise a base body 41, which can be inserted into the insertion openings 29 and 30. At least one sealing portion 42 is provided around the outside of the base body to seal the adjustment chambers 31 and 32 to the outside. In the base body 41, a shaft 43 is rotatably guided by a shaft mount 45. In addition, a sealing portion for the adjustment chamber is provided by a shaft sealing portion 44, which is located between the shaft 43 and the base body 41. A toothed sprocket 47 is provided at the end of the end face of the shaft 43. This toothed sprocket is driven by power supplied to a complementary drive element 48 of the drive unit 23 (Figure 4).

[0030] In addition, at least one sealing portion 49 (Figure 4) can be provided between the base body 41 and the drive unit 23 or its housing.

[0031] On the opposite side of the drive unit 23, the shaft 43 is connected to rotary sliding devices 51 and 52. The rotary sliding device 51 of the first valve device 21 is preferably deviated from the rotary sliding device 52 of the second valve device 22. The second valve device 22 is described in more detail below in Figure 4.

[0032] The drive unit 53 is provided between the rotating sliding devices 51 and 52 and the shaft 44. This drive unit is fixedly connected to the shaft 43 and controls the rotational motion of the rotating sliding parts 54 and 55 relative to the rotating sliding support parts 56 and 57 of the rotating sliding devices 51 and 52. The shaft 43 is welded to the drive unit 53. In detail, this may be done, for example, by laser welding, soldering, bending, or riveting.

[0033] Port 25 is formed as an inlet for the coolant. Therefore, high pressure is typical in this first regulating chamber 31. The first valve device 21 is located on the high-pressure side of the regulating chamber 31 and is formed accordingly.

[0034] Ports 26 and 27 are located on the low-pressure side. Furthermore, the second valve device 22 is located on the low-pressure side of the second regulating chamber 32. Port 16 is formed as an outlet. Ports 26 and 27, which lead into channels 34 and 35, can be controlled as both inlets and outlets, and they are supplied to the low-pressure side regardless of the control.

[0035] The inlet 25 from the housing 12 into the adjustment chamber 31, and the port 16 exiting the housing 12 from the second adjustment chamber 32, are preferably positioned off-center relative to their respective valve devices 21 and 22. They exit off-center and pass into the adjustment chambers 31 and 32, supplying coolant using the rounded portion of the base body 41. This allows for optimized flow supply and / or coolant discharge. Furthermore, the inlet edge of the port 25 entering the adjustment chamber 31, and the edge between the adjustment chamber 32 and the outlet 16, have an inner chamfer, thereby reducing the pressure drop between the port 25 into the adjustment chamber 31 and / or between the adjustment chamber 32 and the port 16. Ports 26 and 27 are also positioned off-center relative to the channels 34 and 35.

[0036] The adjustment chambers 31 and 32 are located opposite each other and are aligned relative to each other after the insertion of the first and second valve devices 21 and 22, so that the longitudinal axes of the shafts 43 preferably lie on a common longitudinal axis. The channels 34 and 35 are aligned coaxially with respect to the longitudinal axis of the housing 12 or the longitudinal axis of the shafts 43. Alternatively, the longitudinal axes of the shafts 43 can be aligned parallel to each other and offset within the common housing 12. The longitudinal axes of the two shafts 43 of the valve devices 21 and 22 are positioned at an angle of less than 180° within the common housing 12. Depending on the configuration, alignment of the adjustment chambers 31 and 32 at an angle of 90° or between 90 and 180° is also possible, and the channels 34 and 35 have a flow-friendly shape accordingly.

[0037] Each of the rotating sliding devices 51, 52 has a rotatable first rotating sliding section 54, 55, for example, with two through openings 61, 62. Rotating sliding support sections 56, 57 are assigned to these rotating sliding sections 54, 55. These preferably each have two through openings 63, 64. The corresponding through openings can be closed or completely opened by the corresponding overlap or offset of the first rotating sliding sections 54, 55 with respect to the rotating sliding support sections 56, 57, and can be partially opened individually or together. This is illustrated below in Figures 7 to 12 and Figure 14. The respective through openings 63, 64 in the rotating sliding support sections 56, 57 are aligned coplane with respect to channels 34, 35.

[0038] The rotating sliding parts 54, 55 and the rotating sliding support parts 56, 57 are preferably formed from ceramic. They can also be formed from plastic or metal.

[0039] Using this design of valve 11, the coolant entering through port 25, which is designed as an inlet, is supplied, for example, through the first valve device 21, either through channel 34 only or channel 35 only, or through both channels 34 and 35, respectively, in proportion to the cooling. Depending on the switching position in the second rotary sliding device 52 of the second valve device 21, the coolant present in channel 34 can flow out, for example, through port 26, which is formed as an outlet. The same applies to the coolant supplied to channel 35, which can be discharged through port 27. The switching position can also be set so that port 16, which is formed as an outlet, discharges the coolant.

[0040] A schematic enlarged cross-sectional view of the second valve device 22 is shown in Figure 4, which will be referred to hereafter only as valve device 22. This cross-sectional view is rotated 90° relative to the cross-sectional view in Figure 3. Thanks to this cross-sectional view, it is clear that the drive unit 53 is mounted and rotatably connected to a rotatable rotating sliding part 55 by a pin 68. For example, the pin 68, which is more specifically a fitting pin, can be pressed into the drive unit 53 to engage with a recess in the rotatable rotating sliding part 55. Here, a press-fit between the pin 68 and the rotating sliding part 55 is preferably provided. Preferably, the pin 68 with a plastic sleeve is pressed into a hole in the rotating sliding part 55 and transmits rotational moment without being subjected to lateral force. This connection between the drive unit 53 and the rotating sliding part 55 may also be provided with a rotating sliding device 51 as shown in Figure 4.

[0041] The rotary sliding device 52, located in the second adjustment chamber 32, is formed to be offset from the rotary sliding device 51 for a typical pressure ratio. A low pressure is present within the adjustment chamber 32. The coolant is still present at high pressure in channels 34 and 35. To enable a sealing device between the rotary sliding support portion 57 of the second rotary sliding device 52 and the adjustment chamber 32, a slip-in sleeve 71 is inserted into each of channels 34 and 35. This is sealed to the outside of channels 34 and 35 by a sealing portion 72. The slip-in sleeve 71 is positioned to be movable axially with respect to the longitudinal axis of channels 34 and 35. Preferably, a spring element 73 is positioned between the shoulder portion 74 of the slip-in sleeve 71 and the base 75 of the adjustment chamber 32. This presses the slip-in sleeve 71 toward the rotary sliding device 52. Looking at the input side in the direction of flow, the slip-in sleeve 71 can have a chamber 77 to form a favorable arrangement in terms of flow. Conversely, the insert sleeve 71 has a contact surface or receiver and / or can engage therewith in order to position it in a predetermined position relative to the rotating sliding support 57. The rotating sliding support 57 can be formed by two annular bodies. The two annular bodies are received and held in the insert sleeve 71. They can then contact the sealing surface 78 or sliding surface of the rotatable rotating sliding part or control disk 55.

[0042] The cross-sectional view shown in Figure 4 can also be a valve 11, where ports 26 and 27 can be omitted or closed, thereby the housing 12 having a port 16 with one inlet opening 17 and two outlet openings 34 and 35. The flow direction of the medium can be provided additionally by the inlet opening 17 or by the outlet openings 34 and 35. The flow direction can also be implemented in the opposite direction, i.e., the outlet openings 34 and 35 are formed as inlets and the inlet opening 17 is formed as an outlet.

[0043] A rotating sliding device 52, comprising a control disk 55 and at least one rotating sliding support portion 57, preferably in the form of a non-rotating control disk, can be controlled by the arrangement of the rotating sliding support portion 57 in the receiving adapter 65 and by a receiver. The receiving adapter 65 may preferably have at least one insertion sleeve 71 in both through-directions.

[0044] A first embodiment of the arrangement of the rotating sliding support portion 57 relative to the exit openings 34, 35 is shown in an enlarged view in Figure 5. This embodiment corresponds to that in Figures 3 and 4. The rotating sliding support portion 57 is received and held by the receiving adapter 65. The rotating sliding support portion 57 is formed as a circle and includes a sealing surface 78. The sealing surface 78 faces the control disk 55 and abuts against the control disk 55. The rotating sliding support portion 57 has a support surface 79 on the opposite side of the sealing surface 78. A fixing portion 81 is provided on the outer periphery of the rotating sliding support portion 57, and this fixing portion has an outer periphery facing the support surface 79 that is larger than the one facing the sealing surface 78. The rotating sliding support portion 57 is positioned relative to the end face 83 of the receiving adapter 65. A recess 84 is provided on the end face 83 and serves to receive an elastically flexible element 84. The elastically flexible element 85 positions the support surface 69 of the rotating sliding support 57 at a distance from the end face 83. The receiving adapter 65 further comprises a holding portion 86, which has a cylindrical peripheral surface 89 and a gripping edge 87 on the opposite side of the end face 83. This gripping edge 87 engages around or behind the fixed portion 81 of the rotating sliding support 57. The axial gap 88 between the support surface 79 of the rotating sliding support 57 and the end face 83 of the receiving adapter 65 is fixed by this gripping edge 87. Here, the rotating sliding support 57 is fixed to the receiving adapter 65 by pre-applying an internal force to the elastically flexible element 85 against the end face 83. The rotating sliding support 57 can be made axially movable due to the axial gap 88 along the longitudinal axis 91 of the exit openings 34, 35. At the same time, the rotating sliding support portion 57 can compensate for the tilting motion of the receiving adapter 65 with respect to the longitudinal axis 91.

[0045] The receiving adapter 65 has a insertion sleeve 71, preferably arranged on it in a single member. At least one spring element 73 is provided, in particular axially along the longitudinal axis 91, for the contracted and flexible arrangement of the receiving adapter 65 at the exit openings 34, 35. This spring element 73 can be formed as a coil spring, a disc spring, or the like, etc. Preferably, a corrugated spring is provided.

[0046] In Figure 6, an alternative design for the receiving adapter 65 is provided to receive the rotating sliding support 57 according to Figure 5. In this embodiment, the insertion sleeve 71 is formed as a push-in sleeve and is pressed directly into the exit openings 34, 35. Therefore, the sealing element 72 and spring element 73 according to the embodiment in Figure 5 can be omitted.

[0047] The arrangement and reception of the rotating sliding support portion 57 to the end face 83 of the receiving adapter 65 corresponds to the embodiment shown in Figure 5. However, in this embodiment shown in Figure 6, the axial clearance 88 can be dimensioned to be larger than that in the embodiment shown in Figure 5. This is because the spring element 73 is omitted in the embodiment shown in Figure 6. Therefore, after inserting the valve device 22 into the adjustment chamber 32 of the housing 12, sufficient adjustment to tolerances can be performed.

[0048] Figure 7 shows alternatives to the rotary sliding support 52 in Figures 3 and 4. By deviating from this, the rotary sliding support 57 can be formed as a single annular body having one or more through openings 61. This single rotary sliding support 57 is received by a receiving adapter 65, preferably using at least two through openings 63, 64. The placement and fixing of the rotary sliding support 57 to the receiving adapter 65 can be carried out in the same manner as in the embodiments of Figures 5 and 6. The receiving adapter 65 has two insertion sleeves 71 on the opposite side of the end face 83 of the rotary sliding support 57. These insertion sleeves can be inserted into the exit openings 34, 35. These insertion sleeves 71 can be formed separately or, preferably, together integrally on the receiving adapter 65.

[0049] Figure 8 shows a schematic partial enlargement of an alternative embodiment of the receiving adapter 65 in the second rotary sliding device 52. In this alternative embodiment, the number of components is reduced. The rotary sliding support 57, the receiving adapter 65, and the insertion sleeve 71 with sleeve position 76 are fused together into a common component. Thus, the annular body is provided with a sealing surface 78 on its upper end face. On the opposite side, a sleeve portion 76 is formed so that the structurally simple rotary sliding support 57 can be inserted and positioned in the exit openings 34, 35. The sleeve portion 76 is formed to be narrower than the sealing surface 78 in terms of wall thickness, thereby forming a shoulder portion 92 in the transition region. The shoulder portion is formed in the transition region between the base 75 of the housing 12 and the wall portions of the exit openings 34, 35, and this shoulder portion is dimensionally adjusted to shoulder portion 92. Therefore, a sealing element 72, more specifically a sealing ring, can be positioned between the two shoulders to seal the sleeve portion 76 and guide it into the outlet openings 34, 35. Advantageously, the rotating sliding support portion 57 is formed from ceramic, more specifically as a ceramic ring, which is then retracted and mounted into the outlet openings 34, 35 by the sealing element 72.

[0050] In this embodiment, radius R1 extends from the longitudinal axis 91 of the exit openings 34, 35 to the sealing line 94. The sealing line 94 is provided between the housing 12 and the shoulder of the housing 12, which is adjacent to the exit openings 34, 35. The sealing effect is provided between the rotating sliding part 55 shown in Figure 8 and the sealing surface 78 of the rotating sliding support part 57, and this sealing effect forms the sealing line 95 in the center of the width of the sealing surface 78. Radius R2 extends from the longitudinal axis 91 to the sealing line 95. Radius R2 is slightly shorter than radius R1. By shifting the sealing line 95 radially outward, radius R2 can be made to match or be larger than radius R1. In the example shown where R1 and R2 are the same, the same force ratio can exist between the force on one side in which the medium presses against the support 57 during rotational sliding, and the reaction force of the rotational sliding support 57 toward the rotational sliding portion 55 on the other side. These ratios are similarly applicable to the embodiments shown in Figures 5, 6, and / or 7. Radius R1 represents the radius between the sealing portion 72 of the housing 12 and the longitudinal axis 91. Radius R2 represents the radius between the sealing surface 78 and the rotational sliding portion 55 in contact with the longitudinal direction 91 or the resulting sealing line 95.

[0051] The rotary sliding device 52 may be supplied with pressure applied by a medium controlled in both directions. On the one hand, the medium under pressure is supplied to the housing 12 through the inlet opening 17, so that on the input side, the medium under pressure can act on the second rotary sliding device 52 or, initially, on the rotary sliding part 55. Alternatively, the medium under pressure can also be supplied to the housing 12 through the outlet openings 34, 35, so that pressure is supplied first to the rotary sliding support 57 on the pressure input side, and then it acts on the rotary sliding part 55.

[0052] Depending on the type of operation and / or the design ratio, various pressing ratios can be created by the external shapes of the rotating sliding part 55 and the rotating sliding support part 57.

[0053] Another embodiment relative to Figure 8 is shown in Figure 9. The radius R1 is formed to be larger than the radius R2. The radius R1 extends between the longitudinal axis 91 and the peripheral walls of the outlet openings 34 and 35, and the sealing portion 72 abuts against it. A pressure acting on the rotary sliding device 52 through the inlet opening 17, and a reduced pressure compared to the embodiment in Figure 8, acts on the rotary sliding portion 55. When pressure is applied to the rotary sliding device 52 through the outlet openings 34 and 35, the increased pressure of the rotary sliding support portion 57 can be realized at the rotary sliding portion 55. Therefore, even at high pressure, firm contact and sealing between the sealing surface 78 of the rotary sliding support portion 57 and the rotary sliding portion 55 can be obtained by selecting radius R1 relative to radius R2.

[0054] Figure 10 shows an alternative embodiment to Figure 9 regarding the external shape of the rotating sliding portion 55 and the rotating sliding support portion 57. In this embodiment, radius R1 is formed to be smaller than radius R2. The large surface area of ​​the rotating sliding portion 55, created by radius R2, results in a low pressure in the rotating sliding support portion 57 when the medium under pressure is supplied through the outlet openings 34, 35 and flows out through the inlet opening 17. When the direction of flow of the medium under pressure is reversed, i.e., when the medium is supplied through the inlet opening 17, a high pressure force in the rotating sliding portion 55 is achieved and obtained by increasing the density between the rotating sliding portion 55 and the rotating sliding support portion 57.

[0055] Figure 11 shows a schematic enlarged view of an alternative embodiment of valve 11, formed as a multi-way valve according to Figure 1. This embodiment of valve 11 is a unidirectional valve. This unidirectional valve 11 includes a through-channel which can be opened and closed. Different cross-sections between the closed and open positions can also be controlled. This unidirectional valve 11 is preferably formed as a so-called bidirectional valve. Control of the through-flow of the medium and the volume flowing through the valve can be selectively performed in both flow directions.

[0056] The valve 11 comprises a housing 12 having an outlet opening 34 with a port on its end face 19. An insertion opening 30 is provided on the opposite side of this end face 19, and a valve device 22 can be positioned in this insertion opening. The valve device 22 comprises a base body 41, which can be inserted into the insertion opening 30 and connected to the housing 12, for example, by fastening means 38, particularly by screws. At least one sealing portion 42 is provided between the base body 41 and the housing 12, thereby sealing this interface. Furthermore, this sealing portion 42 also serves to seal the adjustment chamber 32 from the outside. In the base body 41, a shaft 43 is rotatably guided via a shaft bearing 45. In addition, a sealing portion for the adjustment chamber 32 is provided by a shaft sealing portion, which is located between the shaft 43 and the base body 41. A toothed sprocket 47 is provided at the end of the end face of the shaft 43 and is powered and connected to a complementary drive element 48 of the drive unit 23.

[0057] In addition, a sealing portion 49 can be provided between the base body 41 and the drive unit 23 or its housing.

[0058] On the opposite side of the drive unit 23, the shaft 43 is connected to a rotary sliding device 52. This rotary sliding device 52 is partially separate from the rotary sliding devices 51 and 52 shown in Figure 4. This rotary sliding device 52 includes a rotary sliding part 55 that is connected to the shaft 43 in a non-rotating manner. This rotary sliding part 55 is positioned to rotate freely within a housing portion 56 formed between the base body 41 and the housing 12.

[0059] The base body 41 has a port 16 that transitions to an inlet opening 17. This inlet opening 17 leads to a rotating sliding part 55 via an adjustment chamber 32. An outlet opening 34 is provided on the opposite side. The adjustment chamber 32 is also formed between the rotating sliding part 55 and the outlet opening 34. Depending on the flow direction of the medium through the valve 11, the adjustment chamber 32 is formed upstream of the rotating sliding part 55. High pressure is present in this adjustment chamber 32.

[0060] Alternatively, port 16 can be positioned in the housing 12 in the same manner as in the embodiment shown in Figure 4, and the base body 41 can be inserted into the housing 12 from above.

[0061] The rotating sliding portion 55 of the rotating sliding device 52 has at least one through opening 62. The overlap or offset of the rotating sliding portion 55 with respect to the rotating sliding support portion 57 can be controlled by controlling the rotational motion of the rotating sliding portion 55, thereby closing, partially opening, or fully opening the at least one passage opening 62. In any case, the rotating sliding support portion 57 is located on both sides of the rotating sliding portion 55. Two opposite rotating sliding support portions 57 can be formed of the same material. Preferably, the rotating sliding support portion 57 may have embodiments shown in Figures 5, 6, 8, 9, and / or 10, thereby providing reference to the entire scope of these embodiments, respectively.

[0062] The arrangement of the rotating sliding support 57 on the opposite side of the rotating sliding part 55 allows the rotating sliding part 55 to be mounted in a floating manner, that is, to move axially up and down relative to the shaft 43. In the rotational direction, a non-rotating connection between the rotating sliding part 55 and the shaft 43 is preferably provided. The floating mounting of the rotating sliding part 55 between the rotating sliding support 57, which is positioned mirror-image to the rotating sliding part 55, allows the valve 11 to flow in both directions. In addition, the same ratio can be given to the rotating sliding device 52 regardless of the direction of flow. This allows the valve 11, in particular this unidirectional valve 11, to be used in a wide range of applications. [Explanation of Symbols]

[0063] 11 valves 12 Housing 14 Mounting Interface 16 ports 17 Inlet opening 18 End face 19 End surface 21 First valve device 22 Second valve device 23 Drive unit 24 Longitudinal axis 25 Ports (Port 1) 26 ports (port 2) 27 Ports (Port 3) 29 Insertion opening 30 Insertion opening 31 Adjustment Chamber 32 Adjustment Chamber 34 channels 35 channels 41 Base Unit 42 Sealing part 43 shafts 44 Shaft sealing section 45 Shaft mounting section 47 sprocket 48 Drive elements 49 Sealing part 51 Rotary sliding device 52 Rotary sliding device 53 Drive unit 54 Rotating sliding part 55 Rotating sliding part 57 Rotating sliding support part 61 Through-opening 62 Through-opening 63 Through-opening 64 Through-opening 65 Accepting adapter 68 pins 71 Insert Sleeves 72 Sealing elements 73 Spring elements 74 Shoulder 75 Base 76 Sleeve portion 77 Chambers 78 Sealing surface 79 Support surface 81 Fixed part 83 End surface 84 recess 85 Flexible elements 86 Holding part 87 Gripping edge 88 Axial clearance 89 Cylindrical peripheral surface 91 Longitudinal axis 92 Shoulder 94 sealing line 95 Sealing Line

Claims

1. A valve for controlling the coolant circuit of a refrigeration system, which has a heat pump function, The housing (12) has at least one inlet opening (17) and at least one outlet opening (34, 35), The housing (12) has an adjustment chamber (32) that extends between at least one inlet opening (17) and at least one outlet opening (34, 35), The housing (12) is provided and has an insertion opening (29) adjacent to the adjustment chamber (32), The adjustment chamber (32) has a valve device (22) which is at least partially insertable into the adjustment chamber (32) and thereby controls the flow path of the medium between at least one inlet opening (17) and at least one outlet opening (34, 35), A rotating sliding device (52) is provided in the adjustment chamber (32) of the valve device (22) and includes a control disk (55) that is rotatable with respect to at least one rotating sliding support portion (57), wherein the rotating sliding device (52) is provided in the housing (12) in a non-rotatable manner and is assigned to at least one of the outlet openings (34, 35), At least one of the rotational sliding support parts (57) is mounted to the housing (12) in a floating manner. At least one of the rotational sliding support parts (57) is held by a receiving adapter (65) that can be connected to the housing (12), The receiving adapter (65) has a holding portion (86), the holding portion (86) surrounds the end face (83) of the receiving adapter (65) and abuts against the outer periphery that engages with the fixed portion (81) of the rotating sliding support portion (57), The holding portion (86) has a cylindrical peripheral surface (89) that starts from the end face (83) of the receiving adapter (65), thereby the rotating sliding support portion (57) is guided to the receiving adapter (65) in the center and has a gripping element (87) on its end face, the gripping element (87) engages around or behind the fixed portion (81) of the rotating sliding support portion (57), A valve characterized in that, depending on the height of the cylindrical peripheral surface (89) and / or the length of the gripping element (87) in the holding portion (86) and / or the height of the fixed portion (81) in the rotating sliding support portion (57), the axial gap (88) can be set between the support surface (79) of the rotating sliding support portion (57) and the end face (83) of the receiving adapter (65).

2. The valve according to claim 1, characterized in that at least one of the rotating sliding support portions (57) is axially floating with respect to the longitudinal axis (91) of at least one of the outlet openings (34, 35) and / or at least one of the inlet openings (17).

3. The valve according to claim 2, characterized in that at least one of the rotating sliding support portions (57) engages with the outlet openings (34, 35) by at least a portion thereof, or by a sleeve portion (76) disposed thereon, and is floatingly mounted to the housing (12).

4. The valve according to claim 1, characterized in that the elastically flexible element (85) is provided between the end face (83) of the receiving adapter (65) and the support surface (79) of the rotating sliding support portion (57) opposite to the sealing surface (78) of the rotating sliding support portion (57) facing the control disk (55).

5. The valve according to claim 4, characterized in that the elastically flexible element (85) is provided in the recess of the end face (83) and / or the support surface (79).

6. The valve according to claim 1, characterized in that the rotating sliding support portion (57) is provided with a cylindrical fixed portion (81) around the outer periphery of the rotating sliding support portion (57).

7. The valve according to claim 1, characterized in that the axial gap (88) is greater than 0.01 mm.

8. The valve according to claim 1, wherein the receiving adapter (65) has at least one insertion sleeve (71), and the insertion sleeve (71) is insertable into at least one of the outlet openings (34, 35) in the housing (12).

9. The valve according to claim 8, characterized in that the insertion sleeve (71) is pressed into the outlet openings (34, 35) or is inserted into the outlet openings (34, 35) in a sealed manner using a sealing ring (72).

10. The valve according to claim 1, characterized in that at least one spring element (73) is provided between the receiving adapter (65) and the base (75) of the housing (12), or the base (75) of the adjustment chamber (32) adjacent to the outlet openings (34, 35).

11. The valve according to claim 10, characterized in that at least one of the spring elements (73) is formed as a corrugated spring, a coil spring, a disc spring, an O-ring seal, or a rubber spring element.

12. The valve according to claim 1, characterized in that the rotating sliding support portion (57) is formed from ceramic, or the rotating sliding support portion (57) is formed from metal with a polished or notched surface and / or a sliding coating, or the rotating sliding support portion (57) is formed from plastic or a plastic tip with a sliding coating.

13. The valve according to claim 1, wherein the receiving adapter (65) is more specifically formed from a metal material of a precious metal or a light metal, or from a plastic or metal-plastic composite material.

14. The valve according to claim 1, characterized in that it has several outlet openings (34, 35), and a receiving adapter (65) is insertable into any of the outlet openings (34, 35) and in any case receives a single rotating sliding part (57).

15. Starting from the longitudinal axis (91) of the outlet opening (34, 35) or the inlet opening (17), and extending to the sealing line (94) of the housing (12), the radius R １ A sealing portion (72) is provided therein, the sealing portion (72) radially abuts and seals the outlet opening (34, 35) or the inlet opening (17) with respect to the housing (12), with a radius R starting from the longitudinal axis (91) of the outlet opening (34, 35) or the inlet opening (17) and extending to the sealing line (95) formed between the control disk (55) and the rotating sliding support portion (57). ２ Given R １ : R ２ The valve according to claim 2, characterized in that the ratio is in the range of 0.25 to 4.

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