Proportional valve device

Abstract

A proportional valve device for refrigerant includes a valve body chamber including an inflow opening, a first outflow opening, and a second outflow opening. Further, the proportional valve arrangement includes a valve body configured to be movable in the valve body chamber in the longitudinal axis direction between a first sealing seat and a second sealing seat, where the valve body opens a first flow path from the inflow opening to the first outflow opening when the valve body abuts against the first sealing seat, and the valve body closes a second flow path from the inflow opening to the second outflow opening when the valve body abuts against the second sealing seat. The valve body opens a second flow path from the inflow opening to the second outflow opening.

Description

Technical Field

[0001] This invention relates to a proportional valve device for refrigerants. Background Technology

[0002] The proportional valve device includes a valve body chamber comprising an inlet opening, a first outlet opening, and a second outlet opening. Furthermore, the proportional valve device includes a valve body configured to move within the valve body chamber between a first sealing seat and a second sealing seat along a longitudinal direction. When the valve body abuts against the first sealing seat, the valve body opens a first flow path from the inlet opening to the first outlet opening; and when the valve body abuts against the second sealing seat, the valve body opens a second flow path from the inlet opening to the second outlet opening.

[0003] Such proportional valve devices are used, for example, in the fluid systems of at least partially electric motor vehicles. These proportional valves, also known as continuous valves or directional valves, have stringent requirements, at least in the motor vehicle sector. For example, the fluid can exist in a liquid or gaseous state. Furthermore, regardless of whether the fluid is liquid or gaseous, there are extremely high internal sealing requirements, which also apply externally. Therefore, the proportional valve device must meet boundary conditions that prevent the presence of a pressure relief connection at the valve and ensure reliable pressure reduction.

[0004] Under conditions of large pressure differentials, significant hydraulic or pneumatic forces often act axially on the piston within the valve. Therefore, a larger driving force is required to operate the valve, which is typically achieved using appropriately sized actuators at a suitable cost.

[0005] In this situation, another challenge is ensuring the valve assembly is airtight. Summary of the Invention

[0006] The object of this invention is to provide a valve device belonging to the aforementioned technical field, which at least partially overcomes the shortcomings of the prior art. In particular, an object of this invention is to provide a valve device that takes into account high sealing requirements. Specifically, an object of this invention is to provide protection for the sealing device of the valve device against failure, especially under conditions of large pressure differentials.

[0007] The solution to this objective is defined by the features of claim 1. The present invention relates to a proportional valve device for a refrigerant, comprising a valve body chamber including an inlet opening, a first outlet opening, and a second outlet opening. Furthermore, the proportional valve device includes a valve body configured to be movable within the valve body chamber along a longitudinal direction between a first sealing seat and a second sealing seat, wherein when the valve body abuts against the first sealing seat, the valve body opens a first flow path from the inlet opening to the first outlet opening, and when the valve body abuts against the second sealing seat, the valve body opens a second flow path from the inlet opening to the second outlet opening. The valve body includes a first sealing device configured to abut against the first sealing seat and a second sealing device configured to abut against the second sealing seat.

[0008] Valves are typically used to block and / or control the flow of fluids. Simpler valves can only be controlled discretely. This means they can only be opened / closed, that is, they can only be open and closed. However, for many applications, simply opening and closing valves is no longer sufficient. For example, valves used as expansion valves in battery cooling, air conditioning, or heat pump systems to create a defined and controllable pressure drop between the condenser (heat output) and evaporator (heat absorption) often require more continuous switching. Therefore, in general, continuous switching is often required. For example, this continuous or smooth switching can be achieved using a proportional valve that allows for a smooth transition between on and off states. Thus, the volumetric flow rate of the fluid can be set. Therefore, such a proportional valve not only allows for discrete switching positions with the aid of an actuator but also allows for a smooth transition of the valve opening.

[0009] The refrigerant in this invention should be understood as a fluid used for heat transfer in a refrigeration system, which absorbs heat at low temperatures and low pressures and releases heat at high temperatures and high pressures, wherein the state of the fluid typically changes.

[0010] The resulting technical advantage is that, for example, the proportional valve device allows the valve body to be precisely positioned anywhere between the first and second sealing seats. This also provides another advantage: the proportional valve device can be continuously switched, and the volumetric flow rate can be precisely controlled. For example, the valve body can move flexibly between the first and second sealing seats, thereby simultaneously opening the first and second flow paths. The more the valve body moves along the direction of the first sealing seat, the smaller the flow cross-section of the second flow path becomes, and the larger the flow cross-section of the first flow path becomes. Conversely, the more the valve body moves along the direction of the second sealing seat, the smaller the flow cross-section of the first flow path becomes, and the larger the flow cross-section of the second flow path becomes. In the central position, the valve body is located at the same distance from both the first and second sealing seats. At this position, the dimensions of the first and second flow cross-sections are equal.

[0011] In each case, a corresponding sealing device is provided for both the first and second sealing seats, which brings another technical advantage. For example, the sealing device can be made of an elastic material, thus achieving a better sealing effect when it abuts against the first or second sealing seat. In this regard, according to the present invention, since the first sealing seat is provided with a first sealing device and the second sealing seat is provided with a second sealing device, a combination of continuously switchable proportional valve devices with particularly adaptable sealing performance is produced.

[0012] According to a preferred embodiment, the first and second sealing devices each comprise or are composed of plastic, particularly an elastomer. For example, this provides a technical advantage, as the sealing performance of the proportional valve device can be directly influenced by the targeted selection of the plastics used in the first and second sealing devices. The softer the plastic, the more the first and second sealing devices deform upon contact with the first and second sealing seats, and the better they fit the seats. Therefore, the sealing performance of the proportional valve device can be specifically adjusted according to fluid, pressure, and temperature.

[0013] According to another preferred embodiment, the first sealing device includes a first portion configured to abut against a first sealing seat. This allows the first portion of the first sealing device to geometrically adapt to the first sealing seat. For example, an inclined surface can be formed in a region of the first portion, thereby achieving optimal sealing of the first sealing seat. Simultaneously, when the first portion of the first sealing device enters the first sealing seat, the truncated conical surface of the first portion of the first sealing device provides a self-centering function.

[0014] According to an additional embodiment, the second sealing device includes a first portion configured to abut against a second sealing seat. Similar to the technical advantages of the first sealing device, this allows the first portion of the second sealing seat to be geometrically adapted to the second sealing seat. For example, an inclined surface is formed in a region of the first portion of the second sealing device, thereby achieving optimal sealing of the second sealing seat. Simultaneously, when the first portion of the second sealing device enters the second sealing seat, the truncated conical surface of the first portion of the second sealing device provides a self-centering function.

[0015] According to a particularly advantageous embodiment, the first sealing device and the second sealing device are each tensioned along the longitudinal axis. The resulting technical advantage is that, for example, the hardness and prestress of the sealing devices can be specifically influenced by the axial tension of the first and second sealing devices, thereby adapting the surface hardness of the first portions of the respective first and second sealing devices to specific operating conditions.

[0016] According to a particularly preferred embodiment, the valve body includes a first fixing device and a second fixing device, wherein a first sealing device and a second sealing device are disposed between the first fixing device and the second fixing device along the longitudinal axis. The precise positions of the first sealing device and the second sealing device can be ensured by the arrangement of the first fixing device and the second fixing device. Additionally, further control can be applied to, for example, the resilient first sealing device and the resilient second sealing device by the axial position of the first fixing device and the second fixing device. Overall, the technical advantages of this are that, on the one hand, soft, elastic materials, such as soft plastics or soft elastomers, can be selected as the first sealing device and the second sealing device. On the other hand, even under conditions of high fluid pressure and large temperature differences, high sealing performance of the proportional valve device can be ensured by using the first fixing device and the second fixing device, wherein the tension state of the sealing device can be controlled by the position of the fixing device. An optimal combination of the sealing performance and hardness control advantages of the resilient sealing device is achieved through the first retaining element and the second retaining element. Furthermore, this advantage is combined with the known continuously controllable positioning of the proportional valve device.

[0017] To further increase the applicability of the proportional valve device, the first and / or second fixing devices are configured to be movable along the longitudinal axis. For example, this achieves the technical advantage that at least one fixing device, whether the first or second fixing device, or both, can be moved or adjusted along the longitudinal axis, which in turn makes it possible to change the tension of the first and second sealing devices. Therefore, the adaptability of the proportional valve device to a specific fluid can be adjusted according to boundary conditions such as fluid pressure or temperature.

[0018] According to another particularly advantageous embodiment, a spacer is disposed between the first sealing device and the second sealing device, the spacer being configured to prevent the valve body from abutting against the first and second sealing seats. In other words, when the valve body with the first sealing device is moved into the first valve seat, the spacer contacts a portion of the first sealing seat. In this contact state, the first sealing device tightly abuts against another portion of the first sealing seat, thereby closing the second flow path. Correspondingly, when the valve body with the second sealing device is moved into the second sealing seat, the spacer contacts a portion of the second sealing seat. In this contact state, the second sealing device seals against another portion of the second sealing seat, thereby closing the first flow path. Therefore, the spacer simultaneously serves to stabilize the first and second sealing devices and to restrict the movement of the valve body between the first and second sealing seats. In other words, the corresponding closing force is introduced into the associated first or second sealing seat at least partially through the spacer, and not entirely through the first or second sealing device, and is absorbed by the first or second sealing seat. This reliably achieves and ensures the sealing of the proportional valve device relative to the first and second sealing seats. On the other hand, because the spacer restricts the valve body's stroke, both the first and second sealing devices are simultaneously protected from overload. More precisely, because the spacer can reliably dissipate larger forces, it prevents the first and second sealing devices from undergoing plastic deformation or from shearing fracture of parts of the first or second sealing device. Otherwise, these forces would act directly on the first or second sealing device, further pressing it into its corresponding sealing seat. Therefore, this configuration prevents the first or second sealing device from being squeezed or sheared due to forces, thus preventing failure. Consequently, the sealing performance of the proportional valve device is reliably satisfied, and its service life is extended.

[0019] According to a particularly advantageous embodiment, the first and second sealing devices are configured as a one-piece integral sealing device. This achieves the technical advantage of reducing the number of components used. For example, the first and second sealing devices can be manufactured as a one-piece integral sealing device, thereby reducing production costs and simplifying assembly expenses. In particular, the one-piece integral sealing device can be manufactured by injection molding a spacer, such that the first and second sealing devices of the one-piece integral sealing device are separated from each other by the spacer but integrally connected to each other.

[0020] Preferably, in a cross-sectional view, the one-piece integral sealing device is U-shaped. For example, this achieves the technical advantage that, in each case, one leg of the U-shaped integral sealing device can form a first sealing element and a second sealing element. In particular, the spacer between the legs of the U-shaped integral sealing device ensures additional stability of the sealing device. Therefore, the arrangement of the sealing device, combined with the central spacer between the U-shaped legs of the sealing device, and advantageously due to the tension via the first and second fixing devices, achieves optimal sealing of the proportional valve device relative to the first sealing seat and relative to the second sealing seat.

[0021] According to another preferred embodiment of the proportional valve device, the spacer includes a stop mechanism that protrudes beyond the first and second sealing devices in a radially extending direction relative to the longitudinal axis. This achieves, for example, the technical advantage that, on the one hand, the first and second sealing devices are optimally supported, and thus achieve optimal sealing performance. The area of ​​the spacer protruding beyond the first or second sealing device in a radially extending direction relative to the longitudinal axis corresponds here to the stop mechanism. Specifically, the stop mechanism is configured to prevent abutment against the first and second valve seats. In other words, the stop mechanism forms a defined stop between the valve body and the first or second sealing seat. On the other hand, in this case, the technical advantage is also achieved that the force acting on the first or second sealing device can reliably limit the sealing force required for a reliable seal of the corresponding first or second flow path.

[0022] In this configuration, the shape and dimensions of the stop mechanism and / or the first and second sealing seats are arranged to cooperate in such a way that when the sealing device abuts against the first or second sealing seat, it satisfies the sealing requirements of the sealing device and simultaneously provides protection for the sealing device, such as preventing it from being squeezed out, crushed (extruded), or plastically deformed. This further enhances the adaptability of the sealing device and improves its resistance to larger forces acting on the valve body, such as those caused by high pressure differentials. Overall, the service life of the sealing device can thus be extended.

[0023] Advantageously, in this configuration, the spacer and the stop mechanism can be integrated. In other words, the stop mechanism corresponds to a portion of the spacer. Therefore, manufacturing is particularly simple and precise. In this case, in a cross-sectional view along the longitudinal axis, the thickness of the stop mechanism in the radial extension direction relative to the longitudinal axis can be at least substantially the same as the portion of the spacer housed between the first and second sealing devices. In other words, the spacer can include a cross-sectional shape that is at least substantially rectangular.

[0024] According to an advantageous improvement, the stop mechanism includes a first stroke limiting device extending along the direction of the first sealing seat and a second stroke limiting device extending along the direction of the second sealing seat. In other words, the protruding portion of the spacer element forming the stop mechanism includes the first stroke limiting device extending along the direction of the first sealing seat and the second stroke limiting device extending along the direction of the second sealing seat, such that in a cross-sectional view of the spacer along the longitudinal axis in the radial extension direction relative to the longitudinal axis, the thickness of the stop mechanism is greater than the thickness of the portion of the spacer housed between the first and second sealing devices. In other words, the thickness of the stop mechanism is greater than the thickness of the portion of the spacer located between the first and second sealing devices due to the first and second stroke limiting devices. Therefore, the stroke of the valve body can be easily limited, and the force acting on the first or second sealing device at the corresponding contact position can be advantageously limited. This prevents overload and defects of the first and / or second sealing devices and extends their service life. Therefore, the spacer can present a cross-section that is at least substantially T-shaped along the longitudinal axis.

[0025] According to another advantageous embodiment of the proportional valve device, the contact surfaces of a portion of the first sealing device with the first sealing seat and the contact surfaces of a portion of the second sealing device with the second sealing seat are configured to be inclined relative to the longitudinal axis. This provides an additional technical advantage, namely, that the valve body can move self-centeringly into the first sealing seat at the contact surface of the first portion due to the inclined geometry relative to the longitudinal axis. Therefore, optimal sealing is achieved on the one hand, and higher manufacturing tolerances are achieved for the entire proportional valve device due to the self-centering of the inclined contact surfaces of the first sealing device, which generally reduces production costs. Similarly, this also applies to the contact surfaces of the first portion of the second sealing device, where, due to its inclination relative to the longitudinal axis, a self-centering effect is achieved in addition to the already achieved optimal sealing effect when the second sealing device moves into the second sealing seat. Similar to the first portion of the first sealing device, this allows for reduced production costs due to relatively larger manufacturing tolerances.

[0026] According to another embodiment, the inclination angle of the contact surface of the first portion of the first sealing device relative to the longitudinal axis is in the range of greater than 10° and less than 45°, and the inclination angle of the contact surface of the first portion of the second sealing device relative to the longitudinal axis is in the range of greater than 10° and less than 45°. For example, this achieves the technical advantage that, on the one hand, the inclination contact surfaces allow for a self-centering effect when entering the first or second sealing seat. Furthermore, since the inclination angle range is greater than 10° and less than 45°, optimal sealing effect exists at both the contact surfaces of the first and second portions of the first sealing device relative to the first and second sealing seats. For example, the contact surface of the sealing device can deform according to the force pressing the sealing device onto the sealing seat, thus the inclination angle can change. For example, a 45° inclination angle may exist before the contact surface contacts the sealing seat, and due to the increased force of the valve piston pressing on the sealing seat, elastic deformation of the relevant sealing device may occur, thus the inclination angle of the relevant contact surface also changes relative to the longitudinal axis. This change can be explained by the elastic deformation of the relevant sealing device, which ensures an improved sealing effect.

[0027] According to another advantageous embodiment of the proportional valve device, the first and second sealing seats each include a first seat portion for receiving the contact surfaces of the first and second sealing devices, and a second seat portion for receiving the stop mechanism of the spacer device. In other words, the first seat portion of the first sealing seat receives the contact surface of the first sealing device, thereby forming and achieving a sealing function, while the second seat portion of the first sealing seat forms a stop for the spacer device, particularly the stop mechanism of the spacer device, thereby providing stroke limitation for the valve body. Therefore, the components for achieving the sealing effect and the components for limiting the stroke are advantageously spatially and functionally separated on the first sealing seat, thereby enabling particularly reliable performance of their respective functions. Thus, it is particularly advantageous to ensure that the functions of the first and second seat portions of the first sealing seat do not affect each other or impair their performance. Production is also simplified because the necessary tolerances and manufacturing requirements can be adapted to the functions of the respective seats. Similarly, this also applies to the second sealing seat.

[0028] According to another advantageous improvement, the first seat portion of the first sealing seat and the first seat portion of the second sealing seat respectively form a convex profile on the first sealing seat or the second sealing seat. In other words, the portion of the corresponding sealing seat configured to abut against the first sealing device or the second sealing device has a continuous shape, which ensures that the first sealing device or the second sealing device remains intact after (repeated) application of sealing force. More specifically, the first seat portion of the first sealing seat or the second sealing seat does not include any sharp, pointed, and / or other shaped edges pointing outwards in the direction of the first sealing device or the second sealing device that would jeopardize the integrity of the first sealing device or the second sealing device. Therefore, the service life of the individual sealing devices is advantageously increased, thereby increasing the service life of the entire valve assembly.

[0029] According to another advantageous embodiment of the proportional valve device, the spacer has sealing device receiving portions on the surface facing the first sealing seat and the surface facing the second sealing seat, respectively, at a position corresponding to the first or second sealing seat in the radial direction along the longitudinal axis, particularly within the stop mechanism. In other words, in a cross-sectional view along the longitudinal axis, the spacer includes two opposing recesses that constitute the sealing device receiving portions. Viewed from the radial extension direction relative to the longitudinal axis, the sealing device receiving portions are positioned flush with the first and second sealing seats.

[0030] In this application, the sealing device receiving portion is understood to refer to a structure that is at least substantially three-dimensional and extends inwardly, its shape designed to accommodate additional sealing device material. In other words, the sealing device receiving portion corresponds to a groove on the spacer that reduces the thickness of the spacer. The position of the sealing device receiving portion in the radially extending direction relative to the longitudinal axis corresponds to the position corresponding to the first sealing seat on the first side and the second sealing seat on the second side opposite to the first side. Therefore, the thickness of the first sealing device or the second sealing device can be increased at the portion where the first sealing device contacts the first sealing seat or the portion where the second sealing device contacts the second sealing seat. This provides better protection for the first or second sealing device from defects or plastic deformation. Therefore, the sealing effect can be more reliably ensured, and the first and second sealing devices can be protected from failure.

[0031] According to an advantageous improvement, the sealing device receiving portion is formed in the reduced-diameter section of the spacer. Optionally, the sealing device receiving portion may be formed in a circumferential groove of the spacer, particularly having a partially annular bottom surface, or formed in a circumferentially cut recess.

[0032] According to an advantageous improvement, the spacer can be formed to widen from the sealing device receptacle toward the end of the spacer opposite the stop mechanism in a radially extending direction relative to the longitudinal axis (i.e., along the valve body direction). In other words, in a cross-sectional view, a portion of the spacer element housed between the first and second sealing devices is formed at least substantially in a dovetail shape. For example, the spacer can be widened at least substantially in a way that drips from the sealing device receptacle toward the end of the spacer opposite the stop mechanism. Therefore, the connection between the first sealing device, the second sealing device, and the spacer can be improved. This shaping also allows for improved adhesion of the first or second sealing device to the spacer, as well as better stability of the first and second sealing devices.

[0033] Based on the advantageous development of this spacing device, the thickness of the stop mechanism in the longitudinal direction corresponds to the maximum thickness of the widened portion of the spacing device.

[0034] According to an advantageous embodiment, the proportional valve device includes a pressure bypass that connects a first outflow opening to the valve body chamber when the valve body abuts against the second sealing seat. This achieves technical advantages, such as the ability to perform pressure compensation through the valve body symmetrically without the need for an external bypass. This allows for a compact configuration and enables particularly simple and cost-effective productivity compensation of the proportional valve device. The effective pressure loading surface on the valve body is configured such that the surface pressing the valve body to the right is the same size as the surface pressing the valve body to the left. By bypassing, the same pressure is generated on the surface to the left or right (pressure compensation), thereby achieving force balance on the valve body. This configuration, combined with a stepper motor and therefore a reset element that is not present, forms a complete force compensation system, and thus the self-locking device need not have any force or only a very small force.

[0035] According to one embodiment, the pressure bypass includes a connecting pipe that passes through the valve body. For example, the connecting pipe extends along the longitudinal axis of the valve body's geometry, which enables the refrigerant to flow directly through the valve body, thereby achieving simple and symmetrical pressure compensation for the refrigerant. This generally allows the valve body to adopt a force-balanced structural design.

[0036] According to the invention, the different and exemplary features described above can be combined with each other, provided that this is technically desirable and suitable. Further advantageous embodiments and combinations of features of the invention arise from the following detailed description and the full content of the patent claims. Attached Figure Description

[0037] The accompanying drawings, used to explain exemplary embodiments, show:

[0038] Figure 1 A cross-sectional view of a proportional valve device according to a first embodiment of the present invention.

[0039] Figure 2 according to Figure 1 A magnified detailed view of the valve body.

[0040] Figure 3 A cross-sectional view of another embodiment of the proportional valve device according to the invention, and

[0041] Figure 4 according to Figure 3 A magnified detailed view of the valve body.

[0042] Figure 5 An enlarged detailed view of the valve body according to another embodiment of the proportional valve device of the present invention.

[0043] Figure 6 An enlarged detailed view of the valve body according to another embodiment of the proportional valve device of the present invention.

[0044] Figure 7 An enlarged detailed view of the sealing element of the valve body according to another embodiment of the proportional valve device of the present invention, and

[0045] Figure 8 An enlarged detailed view of the valve body of another embodiment of the proportional valve device according to the present invention.

[0046] In principle, in the accompanying drawings, the same parts have the same reference numerals. Detailed Implementation

[0047] Figure 1 A cross-sectional view of a proportional valve device 100 according to a first embodiment of the present invention is shown. The proportional valve device 100 includes a rotor 102 disposed within a sealing cover 103. The rotor 102 is located in a valve body chamber 105 and is directly connected to a valve body 120. A stator 104 configured to rotate the rotor 102 is radially disposed outside the sealing cover 103. The valve body chamber 105 includes an inflow opening 130, a first outflow opening 135, and a second outflow opening 140. The first outflow opening 135 and the second outflow opening 140 are configured to open according to the position of the valve body 120, which is configured to be movable within the valve body chamber 105 in the longitudinal direction L between a first sealing seat 112 and a second sealing seat 114.

[0048] The valve body 120 is configured to move flexibly between the first sealing seat 112 and the second sealing seat 114, thus simultaneously opening the first flow path 141 and the second flow path 142. The more the valve body 120 moves along the direction of the first sealing seat 112, the smaller the flow cross-section of the second flow path 142 becomes, and the larger the flow cross-section of the first flow path 141 becomes. The more the valve body 120 moves along the direction of the second sealing seat 114, the smaller the flow cross-section of the first flow path 141 becomes, and the larger the flow cross-section of the second flow path 142 becomes.

[0049] When the valve body 120 abuts against the first sealing seat 112, the valve body 120 fully opens the first flow path 141 from the inlet opening 130 to the first outlet opening 135. In this case, the second flow path 142 is completely closed. When the valve body 120 abuts against the second sealing seat 114, the valve body 120 opens the second flow path 142 from the inlet opening 130 to the second outlet opening 140. In this case, the first flow path 141 is completely closed. The proportional valve device 100 is continuously movable between abutting the first sealing seat 112 and the second sealing seat 114. The valve body 120 includes a first sealing device 150 configured to abut against the first sealing seat 112. Additionally, the valve body 120 includes a second sealing device 152 configured to abut against the second sealing seat 114. Preferably, the first sealing device 150 and the second sealing device 152 are each made of plastic. The first sealing device 150 includes a first portion 151 configured to abut against the first sealing seat 112. Similarly, the second sealing device 152 includes a first portion 153 configured to abut against the second sealing seat 114. Both the first sealing device 150 and the second sealing device 152 are tensioned along the longitudinal axis L between the first fixing device 155 and the second fixing device 157. Centrally located along the longitudinal axis L, the proportional valve device 100 includes a pressure bypass 170 that connects a first outflow opening 135 to the valve body chamber 105 when the valve body 120 abuts against the second sealing seat 114. The pressure bypass 170 is configured as a connecting conduit passing through the valve body 120.

[0050] Figure 2 It shows according to Figure 1A magnified detailed view of the valve body 120. The valve body 120 can be seen within the valve body chamber 105 having an inflow opening 130, a first outflow opening 135, and a second outflow opening 140. The valve body 120 abuts against a second sealing seat 114, thereby opening a second flow path 142 from the inflow opening 130 to the second outflow opening 140. A radially outer contact surface 162 of the first sealing device 150 is used for direct contact with the first sealing seat 112. The inclination angle I of the contact surface 162 relative to the longitudinal axis direction L is approximately 30°. Similarly, a radially outer contact surface 164 of the second sealing device 152 is used for direct contact with the second sealing seat 114. The inclination angle I of the contact surface 164 relative to the longitudinal axis direction L is approximately 30°.

[0051] Figure 3 A cross-sectional view of another embodiment of a proportional valve device 100 according to the invention is shown. The proportional valve device 100 includes a rotor 102 disposed within a sealing cover 103. The rotor 102 is located in a valve body chamber 105 and is directly connected to a valve body 120. A stator 104 configured to rotate the rotor 102 is radially disposed outside the sealing cover 103. The valve body chamber 105 includes an inflow opening 130, a first outflow opening 135, and a second outflow opening 140. The first outflow opening 135 and the second outflow opening 140 are configured to open according to the position of the valve body 120, which is configured to be movable within the valve body chamber 105 in the longitudinal direction L between a first sealing seat 112 and a second sealing seat 114. When the valve body 120 abuts against the first sealing seat 112, the valve body 120 opens a first flow path 141 from the inflow opening 130 to the first outflow opening 135. When the valve body 120 abuts against the second sealing seat 114, the valve body 120 opens the second flow path 142 from the inlet opening 130 to the second outlet opening 140. The proportional valve device 100 can move continuously between the first sealing seat 112 and the second sealing seat 114. Therefore, the valve body 120 can move flexibly between the first sealing seat 112 and the second sealing seat 114, thereby opening the first flow path 141 and the second flow path 142 simultaneously. The more the valve body 120 moves in the direction of the first sealing seat 112, the smaller the flow cross-section of the second flow path 142 becomes, and the larger the flow cross-section of the first flow path 141 becomes. The more the valve body 120 moves in the direction of the second sealing seat 114, the smaller the flow cross-section of the first flow path 141 becomes, and the larger the flow cross-section of the second flow path 142 becomes.

[0052] The valve body 120 includes an integral sealing device 158 configured to abut against a first sealing seat 112. Simultaneously, the integral sealing device 158 is configured to abut against a second sealing seat 114.

[0053] Preferably, the integral sealing device 158 is made of plastic. In a longitudinal sectional view, the integral sealing device 158 is U-shaped. A spacer 160 is disposed between the two legs of the U-shaped integral sealing element 158. The spacer 160 protrudes beyond the two legs in a radially extending direction relative to the longitudinal axis L. The first and second legs of the integral sealing device 158 are each tensioned along the longitudinal axis L between the first fixing device 155 and the second fixing device 157. The second fixing device 157 is configured to be movable along the longitudinal axis L.

[0054] Centered along the longitudinal axis L, the proportional valve device 100 includes a pressure bypass 170 that connects a first outflow opening 135 to the valve body chamber 105 when the valve body 120 abuts against the second sealing seat 114. The pressure bypass 170 is configured as a connecting conduit passing through the valve body 120.

[0055] Figure 4 It shows according to Figure 3 A magnified detailed view of the valve body 120. The valve body 120 can be seen within the valve body chamber 105 having an inflow opening 130, a first outflow opening 135, and a second outflow opening 140. The valve body 120 abuts against a second sealing seat 114, thereby opening a second flow path 142 from the inflow opening 130 to the second outflow opening 140. The radially outer contact surface 162 of the first leg of the integral sealing device 158 is for direct contact with the first sealing seat 112. The inclination angle I of the contact surface 162 relative to the longitudinal axis direction L is approximately 30°. Similarly, the radially outer contact surface 164 of the second leg of the integral sealing device 158 is for direct contact with the second sealing seat 114. The inclination angle I of the contact surface 164 relative to the longitudinal axis direction L is approximately 30°.

[0056] Figure 5 An enlarged detailed view of the valve body 120 of another embodiment of the proportional valve device 100 according to the present invention is shown. The proportional valve device 100 is similar to the one described above according to the present invention. Figure 3 and Figure 4 The proportional valve devices are similar and include at least substantially the same features. Therefore, their differences will be discussed in particular below.

[0057] Specifically, the proportional valve device 100 includes a rotor 102 disposed within a sealing cover 103. The rotor 102 is located in a valve body chamber 105 and is directly connected to a valve body 120. A stator 104 configured to rotate the rotor 102 is radially disposed outside the sealing cover 103. The valve body chamber 105 includes an inflow opening 130, a first outflow opening 135, and a second outflow opening 140. The first outflow opening 135 and the second outflow opening 140 are configured to open according to the position of the valve body 120, which is configured to be movable within the valve body chamber 105 in the longitudinal direction L between a first sealing seat 112 and a second sealing seat 114. When the valve body 120 abuts against the first sealing seat 112, the valve body 120 opens a first flow path 141 from the inflow opening 130 to the first outflow opening 135. When the valve body 120 abuts against the second sealing seat 114, the valve body 120 opens the second flow path 142 from the inlet opening 130 to the second outlet opening 140. The proportional valve device 100 can move continuously between the first sealing seat 112 and the second sealing seat 114. Therefore, the valve body 120 can move flexibly between the first sealing seat 112 and the second sealing seat 114, thereby opening the first flow path 141 and the second flow path 142 simultaneously. The more the valve body 120 moves in the direction of the first sealing seat 112, the smaller the flow cross-section of the second flow path 142 becomes, and the larger the flow cross-section of the first flow path 141 becomes. The more the valve body 120 moves in the direction of the second sealing seat 114, the smaller the flow cross-section of the first flow path 141 becomes, and the larger the flow cross-section of the second flow path 142 becomes.

[0058] Centered along the longitudinal axis L, the proportional valve device 100 includes a pressure bypass 170 that connects a first outflow opening 135 to the valve body chamber 105 when the valve body 120 abuts against the second sealing seat 114. The pressure bypass 170 is configured as a connecting conduit passing through the valve body 120.

[0059] according to Figure 5 As shown in the diagram, the valve body 120 includes an integral sealing device 158, which is configured to abut against a first sealing seat 112. Simultaneously, the integral sealing device 158 is configured to abut against a second sealing seat 114.

[0060] Preferably, the integral sealing device 158 is made of plastic, such as an elastomer. In a longitudinal sectional view, the integral sealing device 158 is U-shaped. A spacer 160 is disposed between the two legs of the U-shaped integral sealing element 158 ​​formed by the first sealing device 150 and the second sealing device 152. The spacer 160 protrudes beyond the two legs in a radially extending direction relative to the longitudinal axis L.

[0061] The first and second legs of the integral sealing device 158 are both tensioned along the longitudinal axis L between the first fixing device 155 and the second fixing device 157. The second fixing device 157 is configured to be displaceable along the longitudinal axis L.

[0062] The radially outer contact surface 162 of the first leg of the integral sealing device 158 is used for direct contact with the first sealing seat 112. The inclination angle I of the contact surface 162 relative to the longitudinal axis L is approximately 30°. Similarly, the radially outer contact surface 164 of the second leg of the integral sealing device 158 is used for direct contact with the second sealing seat 114. The inclination angle I of the contact surface 164 relative to the longitudinal axis L is approximately 30°.

[0063] According to Figure 5 The enlarged cross-sectional view specifically shows the valve position, where the first sealing device 150 abuts against the first sealing seat 112 via the first portion 151, and only the first flow path 141 is open. In other words, the second flow path 142 is blocked. Unlike the embodiment described above, the first sealing seat 112 includes an adapting outer contour that is simultaneously configured to form a sealing contact and a stop for the spacer 161.

[0064] The first sealing seat 112 includes a first seat portion 112A for receiving the contact surface 162 of the first sealing device 150 and a second seat portion 112B for receiving the spacer device 160. In other words, the spacer device 160 restricts the travel of the valve body 120 in the direction of the first sealing seat 112 and is configured to prevent abutment against the second seat portion 112B of the first sealing seat 112. In this case, the first seat portion 112A includes a particularly convex shape that is continuously arranged in the direction of the first sealing element 150. The second seat portion 112B of the first sealing seat 112 is formed, for example, as a step formed in the longitudinal direction L.

[0065] During the process of moving the valve body 120 into the first sealing seat 112, the first sealing device 150 first contacts the first seat portion 112A of the first sealing seat 112 through its contact surface 162 and elastically deforms until the spacer device 160 contacts the second seat portion 112B of the first sealing seat 112 and prevents further movement of the valve body 120.

[0066] The spacer 160 includes a stop mechanism 161. The stop mechanism 161 at least substantially corresponds to a portion of the spacer 160 that protrudes beyond the first sealing device 150 and the second sealing device 152 in a radially extending direction relative to the longitudinal axis direction L. In other words, the stop mechanism 161 and the spacer 160 are configured as a single unit. The stop mechanism 161 is configured to prevent abutment against the second seat portion 112B of the first sealing seat 112 and to prevent abutment against the second seat portion 114B of the second sealing seat 114.

[0067] like Figure 5 As shown, in a cross-sectional view along the longitudinal axis L, the stop mechanism 161 may include the same thickness as the spacer 160. In other words, the spacer 160 includes at least a substantially rectangular cross-section. Alternatively, it is entirely conceivable that, in a cross-sectional view along the longitudinal axis L, the stop mechanism 161 may include a thickness greater than that of the spacer 160. In other words, the spacer 160 may include at least a substantially T-shaped cross-section.

[0068] Even in Figure 5 Not explicitly shown, the second sealing seat 114 similarly includes a first seat portion 114A for receiving the contact surface 164 of the second sealing device 152 and a second seat portion 114B for receiving the spacer device 160. The aforementioned features concerning the first sealing seat 112 and the first sealing device 150 also apply accordingly to the second sealing seat 114 and the second sealing device 152.

[0069] Figure 6 An enlarged detailed view of the valve body 120 of another embodiment of the proportional valve device 100 according to the present invention is shown. The proportional valve device 100 is similar to the aforementioned proportional valve device, particularly according to... Figure 5 The proportional valve device is similar and includes essentially the same features. Therefore, its differences will be discussed below. The remaining features correspond to those described above, and their repetition will be omitted.

[0070] according to Figure 6 As shown in the diagram, the valve body 120 includes an integral sealing device 158, which is configured to abut against a first sealing seat 112. Simultaneously, the integral sealing device 158 is configured to abut against a second sealing seat 114.

[0071] Preferably, the integral sealing device 158 is made of plastic, such as an elastomer. In a longitudinal sectional view, the integral sealing device 158 is U-shaped. A spacer 160 is disposed between the two legs of the U-shaped integral sealing element 158 ​​formed by the first sealing device 150 and the second sealing device 152. The spacer 160 protrudes beyond the two legs in a radially extending direction relative to the longitudinal axis direction L.

[0072] The first and second legs of the integral sealing device 158 are each tensioned along the longitudinal axis L between the first fixing device 155 and the second fixing device 157. The second fixing device 157 is configured to be movable along the longitudinal axis L.

[0073] According to Figure 6 In the enlarged cross-sectional view, in particular, the valve position state is shown, wherein the first sealing device 150 is configured such that when its first portion 151 is about to abut the first sealing seat 112, the first flow path 141 is open, and the second flow path 142 is still partially open.

[0074] exist Figure 6 In the valve body 120 shown, the spacer 160 includes a stop mechanism 161. The stop mechanism 161 at least substantially corresponds to a portion of the spacer 160 that protrudes beyond the first sealing device 150 and the second sealing device 152 in a radially extending direction relative to the longitudinal axis direction L. In other words, the stop mechanism 161 and the spacer 160 are configured as a single unit.

[0075] and Figure 5 Compared to the implementation shown, Figure 6 The stop mechanism 161 in the illustrated embodiment includes a first travel limiting device 161A in a cross-sectional view along the longitudinal direction L in the direction of the first sealing seat 112 and a second travel limiting device 161B in the direction of the second sealing seat 114. In other words, in a cross-sectional view along the longitudinal direction L, the stop mechanism 161 may have a greater thickness than the spacer 160. Specifically, in a cross-sectional view along the longitudinal direction L, due to the additional extension of the first travel limiting device 161A and the second travel limiting device 161B, the thickness of the stop mechanism 161 is greater than the thickness of the portion of the spacer 160 accommodated between the first sealing device 150 and the second sealing device 152. In other words, the spacer 160 may include at least a substantially T-shaped cross-section.

[0076] Here, the first sealing seat 112 may also include a first seat portion 112A for receiving the contact surface 162 of the first sealing device 150 and a second seat portion 112B for receiving the first stroke limiting device 161A of the spacer device 160. In other words, the first stroke limiting device 161A of the spacer device 160 limits the stroke of the valve body 120 in the direction of the first sealing seat 112 and is configured to prevent it from abutting against the second seat portion 112B of the first sealing seat 112. Figure 6As shown, in this case, the first seat portion 112A has an inclined shape, which substantially corresponds to the inclination of the first contact surface 162 of the first portion 151 of the first sealing device 150. In this case, the second seat portion 112B of the first sealing seat 112 corresponds to a wall extending radially in the direction of the inflow opening 130 relative to the longitudinal axis direction L.

[0077] During the process of the valve body 120 moving into the first sealing seat 112, the first sealing device 150 first contacts the first seat portion 112A of the first sealing seat 112 through its contact surface 162 and elastically deforms to form a sealing contact until the first stroke limiting device 161A of the stop mechanism 161 contacts the second seat portion 112B of the first sealing seat 112 and prevents the valve body 120 from moving further.

[0078] Even in Figure 6 Not explicitly shown, the second sealing seat 114 similarly includes a first seat portion 114A for receiving the contact surface 164 of the second sealing device 152 and a second seat portion 114B for receiving the second stroke limiting device 161B of the stop mechanism 161. The above-described features concerning the first sealing seat 112 and the first sealing device 150 also apply accordingly to the second sealing seat 114 and the second sealing device 152.

[0079] Figure 7 An enlarged detailed view of the one-piece integral sealing element 158 ​​of the valve body 120 according to another embodiment of the proportional valve device 100 according to the present invention is shown. The proportional valve device 100 is similar to the aforementioned proportional valve device 100, particularly according to... Figure 6 The proportional valve device 100 is similar and includes substantially the same features. Therefore, its differences will be discussed below. The remaining features correspond to those described above, and their repeated descriptions will be omitted.

[0080] according to Figure 7 As shown in the diagram, the valve body 120 includes an integral sealing device 158, which is configured to abut against a first sealing seat 112. Simultaneously, the integral sealing device 158 is configured to abut against a second sealing seat 114.

[0081] Preferably, the integral sealing device 158 is made of plastic, such as an elastomer. In a longitudinal sectional view, the integral sealing device 158 is at least substantially U-shaped. A spacer 160 is disposed between the two legs of the U-shaped integral sealing element 158 ​​formed by the first sealing device 150 and the second sealing device 152. The spacer 160 protrudes beyond the two legs in a radially extending direction relative to the longitudinal axis L.

[0082] The first and second legs of the integral sealing device 158 are each configured to be tensioned along the longitudinal axis L between the first fixing device 155 and the second fixing device 157. The second fixing device 157 is configured to be movable along the longitudinal axis L.

[0083] According to the one-piece integral sealing element 158 Figure 7 In the enlarged cross-sectional view, the spacer 160 includes a stop mechanism 161. The stop mechanism 161 at least substantially corresponds to a portion of the spacer 160 that protrudes beyond the first sealing device 150 and the second sealing device 152 in a radially extending direction relative to the longitudinal axis direction L. In other words, the stop mechanism 161 and the spacer 160 are configured as a single unit.

[0084] like Figure 7 As further shown, the stop mechanism 161 includes a first travel limiting device 161A in a cross-sectional view along the longitudinal axis L in the direction of the first sealing seat 112 and a second travel limiting device 161B in the direction of the second sealing seat 114.

[0085] Here, the first sealing seat 112 may also include a first seat portion 112A for receiving the contact surface 162 of the first sealing device 150 and a second seat portion 112B for receiving the first stroke limiting device 161A of the spacer device 160. In other words, the first stroke limiting device 161A of the spacer device 160 limits the stroke of the valve body 120 in the direction of the first sealing seat 112 and is configured to prevent abutment against the second seat portion 112B of the first sealing seat 112. In this case, the first seat portion 112A may include an inclined shape that substantially corresponds to the inclination of the first contact surface 162 of the first portion 151 of the first sealing device 150. Alternatively, it is also conceivable that the first seat portion 112A includes a convex profile curved in the direction of the first sealing element 150. In this case, the second seat portion 112B of the first sealing seat 112 may correspond to a wall extending radially in the direction of the inflow opening 130 relative to the longitudinal axis direction L, or may be formed as an additional step.

[0086] During the process of the valve body 120 moving into the first sealing seat 112, the first sealing device 150 first contacts the first seat portion 112A of the first sealing seat 112 through its contact surface 162 and elastically deforms until the first stroke limiting device 161A of the stop mechanism 161 contacts the second seat portion 112B of the first sealing seat 112 and prevents the valve body 120 from moving further.

[0087] Even in Figure 7Not explicitly shown, the second sealing seat 114 similarly includes a first seat portion 114A for receiving the contact surface 164 of the second sealing device 152 and a second seat portion 114B for receiving the second stroke limiting device 161B of the stop mechanism 161. The above-described features concerning the first sealing seat 112 and the first sealing device 150 also apply accordingly to the second sealing seat 114 and the second sealing device 152.

[0088] Figure 7 The implementation methods shown are the same as Figure 6 The difference in the illustrated embodiment lies in the structure of the spacer 160. In particular, the portion of the spacer 160 housed between the first sealing device 150 and the second sealing device 152 has a different shape.

[0089] according to Figure 7 In the illustrated embodiment, the spacer element 160 includes two sealing device receptacles 165A and 165B within the stop mechanism 161, extending radially relative to the longitudinal axis direction L. The two sealing device receptacles 165A and 165B are arranged opposite to each other along the longitudinal axis direction L. The first sealing device receptacle 165A is located on the side of the spacer element 160 facing the first sealing seat 112. The second sealing device receptacle 165B is located on the side of the spacer element 160 facing the second sealing seat 114. The first and second sealing device receptacles 165A and 165B are preferably formed directly adjacent to the stop mechanism 161.

[0090] In the radially extending direction relative to the longitudinal axis direction L, two sealing device receiving portions 165A and 165B are provided on the first sealing seat 112 and the second sealing seat 114, specifically at the positions where the first seat portion 112A of the first sealing seat 112 and the first seat portion 114B of the second sealing seat 114 are located. In other words, when the valve body 120 abuts against the first sealing seat 112, at the point where the first seat portion 112A makes sealing contact with the contact surface 162 of the first portion 151 of the first sealing device 150, a line parallel to the longitudinal axis direction L passing through the first seat portion 112A of the first sealing seat 112 also passes through the first and second sealing device receiving portions 165A and 165B of the spacer 160.

[0091] The first sealing device receiving portion 165A is at least substantially three-dimensional in structure, extending inward along the longitudinal axis L into a portion of the spacer 160 housed between the first sealing device 150 and the second sealing device 152, and is configured such that, in the spacer 160, when the first sealing device 150 abuts against the first sealing seat 112, the first sealing device 150 is provided with additional sealing material in the region corresponding to the position of the first seat portion 112A of the first sealing seat 112. Similarly, the second sealing device receiving portion 165B is at least substantially three-dimensional in structure, extending inward along the longitudinal axis L into a portion of the spacer 160 housed between the first sealing device 150 and the second sealing device 152, and is configured such that, in the spacer 160, when the second sealing device 152 abuts against the second sealing seat 114, the second sealing device 152 is provided with additional sealing material in the region corresponding to the position of the first seat portion 114A of the second sealing seat 114.

[0092] The first sealing device receiving portion 165A and the second sealing device receiving portion 165B can each correspond to a groove on the spacer 160 that reduces the thickness of the spacer 160. The positions of the sealing device receiving portions 165A and 165B in the radially extending direction relative to the longitudinal axis correspond to the positions of the first sealing seat 112 on the first side and the second sealing seat 114 on the second side. Therefore, the thickness of the first sealing device 150 or the second sealing device 152 can be increased on the portion 151 of the first sealing device 150 that contacts the first sealing seat 112 or on the portion 153 of the second sealing device 152 that contacts the second sealing seat 114. Therefore, the force required to achieve a sealing effect can be better distributed in the first or second sealing devices 150, 152, thereby more reliably protecting the first sealing device 150 and the second sealing device 152 from plastic deformation and / or shear.

[0093] For example, both the first sealing device receiving portion 165A and the second sealing device receiving portion 165B can be formed as circumferentially narrowed sections in the circumferential direction. Alternatively, the first sealing device receiving portion 165A and the second sealing device receiving portion 165B can be formed as grooves, particularly having a partially annular bottom surface, or as circumferentially cut recesses of different shapes in the circumferential direction.

[0094] The portion of the spacer 160 housed between the first sealing device 150 and the second sealing device 152 may be widened in a radially extending direction relative to the longitudinal axis from the first and second sealing device receptacles 165A, 165B toward the end of the spacer 160 opposite to the stop mechanism 161 (i.e., in the direction of the valve body 120). In other words, in a cross-sectional view, the portion of the spacer 160 housed between the first sealing device 150 and the second sealing device 152 is at least substantially dovetail-shaped. For example, the spacer 160 may be widened at least substantially in a manner that drips from the first and second sealing device receptacles 165A, 165B toward the end of the spacer 160 opposite to the stop mechanism 161.

[0095] For example, the thickness of the stop mechanism 161 in the longitudinal direction can be exactly the same as the maximum thickness of the widened portion of the spacer 160.

[0096] Figure 8 An enlarged detailed view of the valve body 120 of another embodiment of the proportional valve device 100 according to the present invention is shown. The proportional valve device 100 is similar to the aforementioned proportional valve device 100, particularly according to... Figure 6 or Figure 7 The proportional valve device is similar and includes essentially the same features. Therefore, its differences will be discussed below. The remaining features correspond to those described above, and their repeated descriptions will be omitted.

[0097] according to Figure 8 As shown in the diagram, the valve body 120 includes a first sealing device 150 and a second sealing device 152. The first sealing device is configured to abut against a first sealing seat 112, and the second sealing device 152 is configured to abut against a second sealing seat 114.

[0098] Preferably, the first sealing device 150 and the second sealing device 152 are made of plastic, such as an elastomer. A spacer 160 is disposed between the first sealing device 150 and the second sealing device 152. The spacer 160 protrudes beyond the first sealing device 150 and the second sealing device 152 in a radially extending direction relative to the longitudinal axis direction L.

[0099] The first sealing device 150 and the second sealing device 152 are tensioned and disposed between the first fixing device 155 and the second fixing device 157 along the longitudinal axis direction L. The second fixing device 157 is configured to be movable along the longitudinal axis direction L.

[0100] According to Figure 8 In the enlarged cross-sectional view, in particular, the valve position state is shown, wherein the first sealing device 150 is configured such that when its first portion 151 is about to abut the first sealing seat 112, the first flow path 141 is open, and the second flow path 142 is still partially open.

[0101] exist Figure 8 In the valve body 120 shown, the spacer 160 includes a stop mechanism 161. The stop mechanism 161 at least substantially corresponds to a portion of the spacer 160 that protrudes beyond the first sealing device 150 and the second sealing device 152 in a radially extending direction relative to the longitudinal axis direction L. In other words, the stop mechanism 161 and the spacer 160 are configured as a single unit.

[0102] like Figure 8 As shown, the stop mechanism 161 includes a first travel limiting device 161A in a cross-sectional view along the longitudinal direction L in the direction of the first sealing seat 112 and a second travel limiting device 161B in the direction of the second sealing seat 114. In other words, in the cross-sectional view along the longitudinal direction L, the stop mechanism 161 may include a thickness greater than that of the spacer 160. Specifically, in the cross-sectional view along the longitudinal direction L, due to the additional extension of the first travel limiting device 161A and the second travel limiting device 161B, the thickness of the stop mechanism 161 is greater than the thickness of the portion of the spacer 160 accommodated between the first sealing device 150 and the second sealing device 152. In other words, the spacer 160 may include at least a substantially T-shaped cross-section.

[0103] Here, the first sealing seat 112 may also include a first seat portion 112A for receiving the contact surface 162 of the first sealing device 150 and a second seat portion 112B for receiving the first stroke limiting device 161A of the spacer device 160. In other words, the first stroke limiting device 161A of the spacer device 160 limits the stroke of the valve body 120 in the direction of the first sealing seat 112 and is configured to prevent it from abutting against the second seat portion 112B of the first sealing seat 112. Figure 8 As shown, in this case, the first seat portion 112A has an inclined shape, which substantially corresponds to the inclination of the first contact surface 162 of the first portion 151 of the first sealing device 150. In this case, the second seat portion 112B of the first sealing seat 112 corresponds to a wall extending radially in the direction of the inflow opening 130 relative to the longitudinal axis direction L.

[0104] According to Figure 6 Compared to the spacer device 160 in the illustrated embodiment, in Figure 8 In the illustrated embodiment, the spacer 160 extends into the valve body 120. In other words, the spacer 160 contacts the valve body 120.

[0105] In this case, the first sealing device 150 and the second sealing device 152 can be separate sealing devices.

[0106] However, alternatively, it is also conceivable that the first sealing device 150 and the second sealing device 152 can be configured as a one-piece integral sealing device 158, which is configured to abut against the first sealing seat 112 and simultaneously against the second sealing seat 114. In a longitudinal sectional view, the integral sealing device 158 is U-shaped. In this case, the first sealing device 150 corresponds to the first leg, and the second sealing device 152 corresponds to the second leg, and they are connected to each other via the web 153. In particular, with Figure 6 Compared to the illustrated embodiment, the web 153 is positioned on the side facing the stop mechanism 161. In other words, the web 153 is positioned on the side of the spacer 160 opposite to the valve body 120. The stop mechanism 161 protrudes beyond the web 153 in a radially extending direction relative to the longitudinal axis. In this case, the stop mechanism 161 is not formed as a continuous annular circumferential element, but rather as an interruption in a circumferential direction extending perpendicular to the longitudinal axis L, such that a plurality of stop mechanisms 161 extend radially from the spacer 160 in a circumferentially distributed manner. In other words, each stop mechanism 161, including a first stroke limiting device 161A and a second stroke limiting device 161B, extends radially as a radial protrusion of the spacer 160 in a radially extending direction relative to the longitudinal axis.

[0107] To prevent tilting of the valve body 120, in particular, the plurality of stop mechanisms 161 include at least three stop mechanisms 161 evenly distributed around the circumference of the spacer 160. The area of ​​the spacer 160 located between two adjacent stop mechanisms 161 is injection molded by the web 153 of the one-piece integral sealing device 158. Therefore, the spacer 160 is protected from the refrigerant present in the valve device 100 and thus provides a smaller contact surface area.

[0108] During the process of the valve body 120 moving into the first sealing seat 112, the first sealing device 150 first contacts the first seat portion 112A of the first sealing seat 112 through its contact surface 162 and elastically deforms until the first stroke limiting device 161A of the stop mechanism 161 contacts the second seat portion 112B of the first sealing seat 112 and prevents the valve body 120 from moving further.

[0109] Even in Figure 8 Not explicitly shown, the second sealing seat 114 similarly includes a first seat portion 114A for receiving the contact surface 164 of the second sealing device 152 and a second seat portion 114B for receiving the second stroke limiting device 161B of the stop mechanism 161. The above-described features concerning the first sealing seat 112 and the first sealing device 150 also apply accordingly to the second sealing seat 114 and the second sealing device 152.

[0110] It should be noted that, unless otherwise stated or prohibited for technical reasons, the features of the invention described with respect to the various embodiments or variations, such as the types and configurations of the various components and their precise dimensions and spatial arrangements, may also exist in other embodiments. Furthermore, not all features of the various embodiments described in combination need to be implemented in a particular embodiment.

[0111] List of reference numerals

[0112] 100 proportional valve device

[0113] 102 rotor

[0114] 103 Sealing Cover

[0115] 104 stator

[0116] 105 valve body chamber

[0117] 112 First Sealing Seat

[0118] 112A First Seat Part

[0119] The second seat of the first sealing seat of 112B

[0120] 114 Second Sealing Seat

[0121] 114A Second Seat Seat First Seat

[0122] 114B Second Seat Part

[0123] 120 Valve Body

[0124] 130 Inflow Opening

[0125] 135 First outflow opening

[0126] 140 Second outflow opening

[0127] 141 First Flow Path

[0128] 142 Second Flow Path

[0129] 150 First sealing device

[0130] 151 First part of the first sealing device

[0131] 152 Second sealing device

[0132] 153 The first part of the second sealing device

[0133] 155 First Fixing Device

[0134] 157 Second fixing device

[0135] 158 Integrated sealing device

[0136] 160 spacer

[0137] 161 Stopping Mechanism

[0138] 161A First Stroke Limiting Device

[0139] 161B Second Stroke Limiting Device

[0140] 162 Contact surface of the first part of the first sealing device

[0141] 164 Contact surface of the first part of the second sealing device

[0142] 165A First Sealing Device Receiving Section

[0143] 165B Second Sealing Device Receiving Section

[0144] 170 Pressure Bypass

[0145] L (vertical axis direction)

[0146] I. Tilt Angle

Claims

1. A proportional valve device (100) for a refrigerant, comprising: a valve body chamber (105) comprising an inflow opening (130), a first outflow opening (135) and a second outflow opening (140); a valve body (120) configured to be movable in the valve body chamber (105) along a longitudinal axis direction (L) between a first sealing seat (112) and a second sealing seat (114); wherein the valve body (120) opens a first flow path (141) from the inflow opening (130) to the first outflow opening (135) when the valve body (120) abuts against the first sealing seat (112) and opens a second flow path (142) from the inflow opening (130) to the second outflow opening (140) when the valve body (120) abuts against the second sealing seat (114); and wherein the valve body (120) comprises a first sealing device (150) configured to abut against the first sealing seat (112) and a second sealing device (152) configured to abut against the second sealing seat (114).

2. Proportional valve device (100) according to claim 1, characterized in that The first sealing device (150) and the second sealing device (152) each comprise or consist of a plastic, in particular an elastomer.

3. Proportional valve device (100) according to claim 1 or 2, characterized in that The first sealing device (150) comprises a portion (151) configured to abut against the first sealing seat (112) and / or wherein the second sealing device (152) comprises a portion (153) configured to abut against the second sealing seat (114).

4. Proportional valve device (100) according to claim 3, characterized in that The first sealing device (150) and the second sealing device (152) are arranged tensioned along the longitudinal axis direction (L).

5. Proportional valve device (100) according to any one of the preceding claims, characterized in that The valve body (120) comprises a first fixation device (155) and a second fixation device (157), wherein the first sealing device (150) and the second sealing device (152) are arranged between the first fixation device (155) and the second fixation device (157) along the longitudinal axis direction (L), wherein the first fixation device (155) and / or the second fixation device (157) are preferably configured to be movable along the longitudinal axis direction (L).

6. Proportional valve device (100) according to any one of the preceding claims, characterized in that A spacing device (160) is arranged between the first sealing device (150) and the second sealing device (152), the spacing device (160) being configured to prevent the valve body (120) from abutting against the first sealing seat (112) and the second sealing seat (114).

7. Proportional valve device (100) according to any one of the preceding claims, characterized in that The first sealing device (150) and the second sealing device (152) are configured as a one-piece integral sealing device (158).

8. Proportional valve device (100) according to claim 7, characterized in that The one-piece integral sealing device (158) is U-shaped in a longitudinal sectional view and at least partially surrounds the spacing device (160).

9. Proportional valve device (100) according to any one of claims 6 to 8, characterized in that The spacing device (160) comprises a stop mechanism (161) which protrudes beyond the first sealing device (150) and the second sealing device (152) in a radial extension direction with respect to the longitudinal axis direction (L).

10. Proportional valve device (100) according to claim 9, characterized in that The spacing means (160) and the stop mechanism (161) are configured as one piece.

11. Proportional valve device (100) according to claim 9 or 10, characterized in that The stop mechanism (161) comprises a first travel limitation means (161A) extending in the direction of the first seal seat (112) and a second travel limitation means (161B) extending in the direction of the second seal seat (114).

12. Proportional valve device (100) according to any one of the preceding claims, characterized in that The contact surface (162) of the first sealing device (150) and the contact surface (164) of the second sealing device (152) are configured to be inclined with respect to the longitudinal axis direction (L).

13. Proportional valve device (100) according to claim 12, characterized in that The inclination angle (I) of the contact surface (162) with respect to the longitudinal axis direction (L) is in the range of more than 10° and less than 45°, and the inclination angle (I) of the contact surface (164) with respect to the longitudinal axis direction (L) is in the range of more than 10° and less than 45°.

14. Proportional valve device (100) according to any one of the preceding claims, characterized in that The first seal seat (112) and the second seal seat (114) each comprise a first seat portion (112A, 114A) for accommodating the contact surface (162) of the first sealing device (150) and the contact surface (164) of the second sealing device (152), and a second seat portion (112B, 114B) for accommodating the stop mechanism (161) of the spacing means (160).

15. Proportional valve device (100) according to claim 14, characterized in that The first seat portion (112A) of the first seal seat (112) and the first seat portion (114A) of the second seal seat (114) each form a convex profile on the first or second seal seat (112, 114).

16. Proportional valve device (100) according to any one of the preceding claims, characterized in that The spacing means (160) each comprise a sealing device accommodation (165A, 165B) on a first side facing the first seal seat (112) and on a second side facing the second seal seat (114) in the radial direction of the longitudinal axis direction (L), in particular within the stop mechanism (161), the sealing device accommodation (165A, 165B) being located in a position corresponding to the first or second seal seat (112, 114).

17. Proportional valve device (100) according to any one of the preceding claims, characterized in that The proportional valve device (100) comprises a pressure bypass (170) connecting the first outflow opening (135) to the valve body chamber (105) when the valve body (120) is resting against the second seal seat (114), wherein the pressure bypass (170) preferably comprises a connecting line through the valve body (120).

Images