Valve needle, valve element, valve, heat pump system and vehicle

Abstract

The utility model relates to a valve needle, a valve element, a valve, a heat pump system and a vehicle, the valve needle comprises a valve needle body and a hanging table, the valve needle body is provided with a first sealing part, the first sealing part is suitable for being in sealing contact with a channel in a valve port assembly of the valve in a separable mode so as to close or open the channel, and the hanging table is constructed to abut against the valve port assembly; and the hanging table is adjustably connected to the valve needle body along the axial position of the valve needle body. The hanging table with the adjustable position can make up manufacturing errors and assembling errors of parts in the valve, so that the valve can have a needed inflection point, the control precision of the valve on the flow of fluid can be improved, and errors are reduced. Besides, the inflection point of the valve can be actively adjusted by actively adjusting the mounting position of the hanging table on the valve needle body, so that the valve can meet different control requirements of different devices on fluid, and the universality of the valve is high.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of flow regulating components, in particular, to a valve needle, a valve spool, a valve, a heat pump system and a vehicle. BACKGROUND

[0002] On a vehicle, a fold line valve can be applied in a heat management system (such as a heat pump system) of the vehicle, the fold line valve is provided with a valve port, a valve port assembly and a valve needle cooperating with the valve port assembly, by adjusting the valve needle and / or the valve port assembly, the flow of fluid flowing through the valve can be regulated.

[0003] In the related art, the inflection point of the flow of the fold line valve (i.e. the critical point between the small flow mode and the large flow mode) is usually realized by a built-in hanging table, but due to the influence of factors such as manufacturing errors and assembly errors of the internal components of the fold line valve, the inflection point of the fold line valve is prone to errors, and the control accuracy of the flow of the fold line valve is low. UTILITY MODEL CONTENT

[0004] The purpose of the present disclosure is to provide a valve needle, a valve spool, a valve, a heat pump system and a vehicle to at least partially solve the technical problems existing in the related art.

[0005] In order to achieve the above-mentioned purpose, according to a first aspect of the present disclosure, a valve needle is provided, comprising:

[0006] a valve needle body provided with a first sealing part, the first sealing part being adapted to be in separable sealing contact with a passage in a valve port assembly of a valve, so as to close or open the passage; and

[0007] a hanging table adjustably connected to the valve needle body in an axial direction of the valve needle body, the hanging table being configured to abut against the valve port assembly so as to drive the valve port assembly away from or close to a valve port of the valve.

[0008] Optionally, the valve needle body is adapted to pass through the passage, the hanging table is adjustably connected to a first end of the valve needle body in the axial direction of the valve needle body, the first end being an end of the valve needle body close to the valve port.

[0009] Optionally, the hanging table comprises a connecting part and an abutting part, the connecting part being adjustably connected to the valve needle body in the axial direction of the valve needle body;

[0010] the abutting part being provided on a side of the connecting part away from the valve needle body, the abutting part being used to abut against the valve port assembly.

[0011] Optionally, one of the valve needle body and the connecting part is provided with a threaded hole, and one of the valve needle body and the connecting part is provided with an external threaded segment, the external threaded segment being threadedly matched with the threaded hole.

[0012] Optionally, the connecting portion is configured as a threaded rod, and the abutting portion is configured as a disc vertically connected with the threaded rod.

[0013] Optionally, the abutting portion is configured to abut against an abutting surface on the valve port assembly, and a distance between the abutting portion and the abutting surface along an axial direction of the valve needle body is greater than or equal to 1 mm and less than or equal to 2 mm.

[0014] According to a second aspect of the present disclosure, a valve core is provided, comprising a valve port assembly and a valve needle as described above.

[0015] The valve port assembly is configured to open or close the valve port, and a passage is arranged in the valve port assembly. The first sealing portion is configured to be in separable sealing contact with the passage to close or open the passage. The hanging table is configured to abut against the valve port assembly to drive the valve port assembly away from or close to the valve port of the valve.

[0016] Optionally, the valve port assembly comprises a valve port seat, and the passage is arranged on the valve port seat. An abutting surface is arranged on a side of the valve port seat close to the valve port, and the abutting surface is arranged around the valve port and configured to abut against the hanging table.

[0017] Optionally, the valve needle further comprises a first sealing ring and a compression ring. The first sealing ring is sleeved on the first sealing portion, and the compression ring is compressed on the first sealing ring. The first sealing ring is adapted to be in sealing contact with the valve port assembly.

[0018] According to a third aspect of the present disclosure, a valve is provided, comprising a valve body and a valve core as described above.

[0019] The valve body comprises a valve seat, and the valve port is arranged on the valve seat. The valve port assembly is movably arranged in the valve body to open or close the valve port.

[0020] Optionally, the valve comprises a closed mode and a first working mode. In the closed mode, the first sealing portion is in sealing contact with the passage in the valve port assembly to close the passage, and the valve port assembly is in sealing contact with the valve seat to close the valve port.

[0021] In the first working mode, the first sealing portion is separated from the valve port assembly, and the valve port assembly is in sealing contact with the valve body.

[0022] Optionally, the valve further comprises a second working mode. In the second working mode, the first sealing portion is in sealing contact with the valve port assembly to close the passage, and the valve port assembly is separated from the valve body to open the valve port.

[0023] Optionally, the valve port assembly is provided with a valve needle sealing seat, and the valve needle body is at least partially inserted into the valve needle sealing seat, so that the first sealing part on the valve needle body is formed in interference fit with the inner wall of the valve needle sealing seat.

[0024] Optionally, the valve further comprises a second sealing ring, which is sleeved on the valve port assembly and is formed in interference fit between the second sealing ring and the valve body.

[0025] According to a fourth aspect of the present disclosure, a heat pump system is provided, comprising the valve as described above.

[0026] According to a fifth aspect of the present disclosure, a vehicle is provided, comprising the heat pump system as described above, or the valve as described above.

[0027] By the above technical solution, when the valve needle is applied to a valve such as a fold line valve, since the hanging table is adjustably connected to the valve needle body in the axial direction of the valve needle body, even if there is a manufacturing error and / or assembly error in the valve due to the parts in the valve, which causes the relative position between the hanging table and the valve port assembly to deviate, resulting in an error in the inflection point of the valve, the operator can adjust the installation position of the hanging table on the valve needle body, thereby adjusting the distance between the hanging table and the valve port assembly, thereby compensating for the impact of the manufacturing error and / or assembly error on the inflection point. In other words, the position-adjustable hanging table can compensate for the manufacturing error and assembly error of the parts in the valve, so that the valve can have the required inflection point, thereby facilitating the improvement of the accuracy of the valve in controlling the flow of fluid, so as to have smaller error.

[0028] In addition, when the valve needle body is applied to a valve, by actively adjusting the installation position of the hanging table on the valve needle body, the inflection point of the valve can also be actively adjusted, so that the valve can meet the different control requirements of different equipment for fluid, without the need to design and manufacture different valves according to different equipment, so as to realize the flow control requirements of different equipment for fluid, and the versatility of the valve is higher.

[0029] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0031] Figure 1 is a side view schematic diagram of a valve provided by an exemplary embodiment of the present disclosure.

[0032] Figure 2 is a cross-sectional view schematic diagram of a valve provided by an exemplary embodiment of the present disclosure.

[0033] Figure 3 is a front view schematic diagram of a partial structure of a valve provided by an exemplary embodiment of the present disclosure, wherein a valve core and an iron core cover are shown.

[0034] Figure 4 is a sectional view schematic diagram of a partial structure of a valve provided by an exemplary embodiment of the present disclosure, wherein a valve core, an iron core cover, a magnetic rotor and a screw rod are shown.

[0035] Figure 5 is a sectional view schematic diagram of a valve core and a screw rod in an assembled state provided by an exemplary embodiment of the present disclosure.

[0036] Figure 6 is a sectional view schematic diagram of a valve needle and a screw rod in an assembled state provided by an exemplary embodiment of the present disclosure.

[0037] Figure 7 is a partial sectional view schematic diagram of a partial structure of a valve port assembly provided by an exemplary embodiment of the present disclosure.

[0038] Explanation of Reference Signs

[0039] 1000 - valve; 100 - valve core; 10 - valve needle; 11 - valve needle body; 111 - first sealing part; 12 - hanging table; 121 - connecting part; 122 - abutting part; 13 - first sealing ring; 14 - pressing ring; 20 - valve port assembly; 21 - channel; 22 - valve port seat; 23 - abutting surface; 24 - valve needle sealing seat; 200 - valve body; 30 - valve seat; 40 - valve port; 50 - second opening; 60 - valve core cavity; 70 - valve needle cavity; 300 - second sealing ring; 400 - iron core cover; 500 - magnetic rotor; 600 - locking block; 700 - screw rod; 800 - limiting spring; 900 - valve needle spring. DETAILED DESCRIPTION

[0040] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0041] In the present disclosure, it should be understood that the directional words used, such as "upper" and "lower", are usually defined in terms of the drawing direction of the corresponding drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural outline. In addition, it should be noted that the terms used, such as "first" and "second", are used to distinguish one element from another, and do not have sequentiality and importance. In addition, in the description of the reference drawings, the same mark in different drawings represents the same element.

[0042] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0043] As mentioned above, during the production and manufacturing process, due to the manufacturing errors and assembly errors of the components of the zigzag valve, the inflection point of the zigzag valve is prone to errors, and the zigzag valve cannot achieve precise control of the flow rate and has low accuracy.

[0044] In view of this, if Figures 1 to 7 As shown, according to the first aspect of the present disclosure, a valve needle 10 is provided, comprising a valve needle body 11 and a hanging platform 12, wherein the valve needle body 11 is provided with a first sealing portion 111, the first sealing portion 111 is suitable for being detachably sealed in contact with the channel 21 in the valve port assembly 20 of the valve 1000 to close or open the channel 21, and the hanging platform 12 is constructed to be able to abut against the valve port assembly 20 to drive the valve port assembly 20 away from or close to the valve port 40 of the valve 1000, wherein the hanging platform 12 is adjustably connected to the valve needle body 11 along the axial position of the valve needle body 11.

[0045] When the above-mentioned valve needle 10 is applied to the valve 1000, the valve needle 10 and the valve port assembly 20 cooperate with each other. The valve 1000 can be a broken line valve 1000. When the valve 1000 is in the closed mode, the first sealing portion 111 of the valve needle body 11 is in sealing contact with the channel 21 in the valve port assembly 20 of the valve 1000, and the valve port assembly 20 is in sealing contact with the valve seat 30 of the valve 1000. The valve port 40 of the valve 1000 and the channel 21 in the valve port assembly 20 are both in a closed state. The valve 1000 can cut off the fluid.

[0046] When the valve 1000 is switched from the open mode to the closed mode, the valve needle body 11 can move towards the valve port assembly 20, and the valve port assembly 20 can move towards the valve port 40 until the valve port assembly 20 contacts the valve port 40, and the valve port 40 is closed. At this time, the valve 1000 is switched from the large flow mode to the small flow mode. Meanwhile, the distance between the first sealing part 111 on the valve needle body 11 and the flow channel in the valve port assembly 20 is gradually reduced until the first sealing part 111 contacts the valve port assembly 20, thereby sealing the flow channel in the valve port assembly 20, and the valve 1000 is in the closed state.

[0047] When the valve 1000 is switched from the open mode to the closed mode, the valve needle body 11 can move towards the valve port assembly 20, and the valve port assembly 20 can move towards the valve port 40 until the valve port assembly 20 contacts the valve port 40, and the valve port 40 is closed. At this time, the valve 1000 is switched from the large flow mode to the small flow mode. Meanwhile, the distance between the first sealing part 111 on the valve needle body 11 and the flow channel in the valve port assembly 20 is gradually reduced until the first sealing part 111 contacts the valve port assembly 20, thereby sealing the flow channel in the valve port assembly 20, and the valve 1000 is in the closed state.

[0048] Here, it should be noted that the inflection point of the broken line valve 1000 mentioned above refers to the point at which the flow changes greatly when the valve 1000 is switched from the small flow mode to the large flow mode or from the large flow mode to the small flow mode when the valve 1000 is in the open mode, that is, the point at which the hanging table 12 just contacts the valve port assembly 20 or the point at which the hanging table 12 just separates from the valve port assembly 20.

[0049] By the technical scheme, when the valve needle 10 is applied to the valve 1000, such as the fold line valve 1000, since the hanging table 12 is adjustably connected to the valve needle body 11 in the axial direction of the valve needle body 11, even if there is a manufacturing error and / or an assembly error in the valve 1000, so that the relative position between the hanging table 12 and the valve port assembly 20 is deviated, and the inflection point of the valve 1000 is deviated, the operator can adjust the installation position of the hanging table 12 on the valve needle body 11, so as to adjust the distance between the hanging table 12 and the valve port assembly 20, so as to compensate the influence of the manufacturing error and / or the assembly error on the inflection point. In other words, the position-adjustable hanging table 12 can compensate the manufacturing error and the assembly error of the valve 1000, so that the valve 1000 can have the required inflection point, thereby facilitating to improve the accuracy of the flow control of the valve 1000 on the fluid, so as to have a smaller error.

[0050] In addition, when the valve needle body 11 is applied to the valve 1000, by actively adjusting the installation position of the hanging table 12 on the valve needle body 11, the inflection point of the valve 1000 can be actively adjusted, so that the valve 1000 can meet different control requirements of different devices on the fluid, without the need to design and manufacture different valves 1000 according to different devices, so as to realize the flow control requirements of different devices on the fluid, and the versatility of the valve 1000 is higher.

[0051] It should be noted that the valve needle 10 can be used in other valves in addition to the fold line valve, and the present disclosure does not limit this.

[0052] It should be noted that the present disclosure does not limit the specific position relationship between the hanging table 12 and the valve needle body 11, as long as the adjustment of the position of the hanging table 12 on the valve needle body 11 can realize the adjustment of the inflection point of the valve 1000. As an embodiment of the present disclosure, as shown in Figure 2 and Figures 4 to 6 The hanging table 12 is adjustably connected to the first end of the valve needle body 11 in the axial direction of the valve needle body 11, and the first end is the end of the valve needle body 11 close to the valve port 40. In this way, by adjusting the distance between the hanging table 12 and the first end of the valve needle body 11, the relative position between the hanging table 12 and the valve port assembly 20 can be adjusted, so as to adjust the inflection point of the valve 1000.

[0053] As another embodiment of the present disclosure, the hanging table 12 can be arranged at the middle position of the valve needle body 11 in the axial direction, and the valve port assembly 20 can be provided with a matching part for contacting the hanging table 12. In this way, the hanging table 12 can also cooperate with the matching part in the valve port assembly 20, so as to realize the switching of different working modes of the valve 1000.

[0054] The specific structure of the hanging table 12 is not limited in the present disclosure, and optionally, as shown in Figure 2 and Figures 4 to 6 The hanging table 12 includes a connecting portion 121 and an abutting portion 122. The connecting portion 121 is adjustably connected to the valve needle body 11 along the axial direction of the valve needle body 11, and the abutting portion 122 is arranged on the side of the connecting portion 121 away from the valve needle body 11, and the abutting portion 122 is used to abut against the valve port assembly 20. In this way, during the switching of the valve 1000 from the small flow mode to the large flow mode, the abutting portion 122 on the hanging table 12 can move towards the valve port assembly 20 under the action of the movement of the valve needle body 11, and when the abutting portion 122 abuts against the valve port assembly 20, the valve 1000 is at the inflection point, and the valve port assembly 20 can move away from the valve port 40 under the abutting action of the abutting portion 122, so as to open or close the valve port 40, thereby realizing the switching of the different working modes of the valve 1000.

[0055] As another embodiment of the present disclosure, the hanging table 12 can also include a connecting portion 121 and a plug-in portion, and a plug-in slot is arranged on the side of the valve port assembly 20 close to the valve port 40, and the plug-in portion can be at least partially inserted into the plug-in slot and abut against the bottom wall of the plug-in slot. In this way, the plug-in portion on the hanging table 12 can also move towards the valve port assembly 20 under the action of the valve needle body 11 and be inserted into the plug-in slot, and the valve port assembly 20 can also move away from the valve port 40 under the abutting action of the plug-in portion, so as to open the valve port 40.

[0056] For the embodiment in which the hanging table 12 includes the connecting portion 121 and the abutting portion 122, the specific connection mode of the connecting portion 121 and the abutting portion 122 is not limited in the present disclosure, and as an embodiment of the present disclosure, as shown in Figure 2 and Figures 4 to 6 One of the valve needle body 11 and the connecting portion 121 is provided with a threaded hole, and one of the valve needle body 11 and the connecting portion 121 is provided with an external threaded segment, and the external threaded segment is threadedly matched with the threaded hole.

[0057] On the one hand, by adjusting the length of the threaded connection between the valve needle body 11 and the connecting portion 121, the installation position of the hanging table 12 on the valve needle body 11 can be adjusted, the distance between the hanging table 12 and the valve port assembly 20 can be adjusted, and thus the adjustment of the inflection point of the valve 1000 can be realized.

[0058] On the other hand, the thread also has a self-locking effect, and the valve needle body 11 and the connecting portion 121 connected by the thread are not easy to move relative to each other, and the relative position between the hanging table 12 and the valve needle body 11 is not easy to change, thereby effectively avoiding the change of the position between the hanging table 12 and the valve needle body 11, which leads to the change of the inflection point of the valve 1000, and the situation that the valve 1000 cannot accurately control the fluid.

[0059] Optionally, as shown in Figure 5 and Figure 6 The connecting part 121 can be configured as a threaded rod, and the abutting part 122 can be configured as a disc-shaped part connected perpendicularly to the threaded rod. In this way, during the switching process of the valve 1000 from the small flow mode to the large flow mode, the abutting part 122 configured as a disc-shaped part can move towards the valve port assembly 20 under the action of the movement of the valve needle body 11, and when the disc-shaped part abuts against the valve port assembly 20, the valve 1000 is at the inflection point, and the valve port assembly 20 can move away from the valve port 40 under the abutting action of the abutting part 122, thereby opening the valve port 40.

[0060] Here, it should be noted that the present disclosure does not limit the specific size of the disc-shaped part, and in order to enable the disc-shaped part to drive the valve port assembly 20 to move away from the valve port 40, the diameter of the disc-shaped part is optionally greater than the diameter of the inner passage 21 of the valve port assembly 20. In this way, the disc-shaped part can be in contact with the surface of the valve port assembly 20 on the side close to the valve port 40, thereby driving the valve port assembly 20 to move.

[0061] Further, in order to avoid interference between the disc-shaped part and the valve port 40 of the valve 1000, the diameter of the disc-shaped part is optionally less than the diameter of the valve port 40 of the valve 1000. In this way, during the movement of the disc-shaped part, the disc-shaped part will not be in contact with the valve port 40 of the valve 1000, effectively avoiding the situation that the disc-shaped part is too large in size, the disc-shaped part abuts against the valve port 40 of the valve 1000, and the valve needle body 11 and / or the valve port assembly 20 cannot move normally, and the valve 1000 cannot control the fluid normally.

[0062] In order to enable the valve 1000 to also adjust the flow of the fluid in the small flow mode, optionally, as shown in Figure 5 and Figure 6 The cross-sectional area of the first sealing part 111 gradually increases in the direction from the valve needle body 11 to the connecting part 121. In other words, the first sealing part 111 adopts a variable cross-section design, so that when the valve needle body 11 moves towards the valve port assembly 20 or moves away from the valve port assembly 20, i.e., opens the passage 21 on the valve port assembly 20 or closes the passage 21 on the valve port assembly 20, the gap between the valve needle body 11 and the flow passage gradually increases or gradually decreases, and the different gaps between the valve needle body 11 and the flow passage can allow different flow rates of fluid to pass, thereby enabling the valve needle body 11 to adjust the flow rate of the fluid in the small flow mode.

[0063] The present disclosure does not limit the distance between the hanging table 12 and the valve port assembly 20. As an embodiment of the present disclosure, the abutting portion 122 is used to abut against the abutting surface 23 on the valve port assembly 20, and the distance between the abutting portion 122 and the abutting surface 23 in the axial direction of the valve needle body 11 is greater than or equal to 1 mm and less than or equal to 2 mm.

[0064] Here, it should be first noted that the distance between the abutting portion 122 and the abutting surface 23 refers to the distance between the surface of the side of the abutting portion 122 close to the valve port assembly 20 (i.e., the upper surface of the abutting portion 122) and the abutting surface 23 in the axial direction of the valve needle body 11.

[0065] In other words, the adjustment range of the distance between the abutting portion 122 and the valve port assembly 20 is 1 mm, i.e., the axial adjustment range of the hanging table 12 on the valve needle body 11 is 1 mm. In this way, by reasonably adjusting the installation position of the hanging table 12 on the valve needle body 11, the distance between the abutting portion of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 is adjusted, and the inflection point of the valve 1000 is adjusted, so that the valve 1000 can meet the flow control requirements of the fluid.

[0066] Furthermore, since the distance between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 is greater than or equal to 1 mm, even if there are manufacturing errors and assembly errors in the components in the valve 1000, the distance between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 is deviated, and the distance between the abutting portion 122 and the abutting surface 23 is close, by adjusting the installation position of the hanging table 12 on the valve needle body 11, there is still a certain gap between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20, so that the valve 1000 can have both large flow mode and small flow mode.

[0067] In addition, since the distance between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 is less than or equal to 2 mm, even if there are manufacturing errors and assembly errors in the components in the valve 1000, the distance between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 is deviated, and the distance between the abutting portion 122 and the abutting surface 23 is far, by adjusting the installation position of the hanging table 12 on the valve needle body 11, the gap between the abutting portion 122 of the hanging table 12 and the abutting surface 23 of the valve port assembly 20 will not be too large, and the hanging table 12 will not affect the normal use of the valve 1000, and the valve 1000 can have both large flow mode and small flow mode.

[0068] According to a second aspect of the present disclosure, there is provided a valve core 100 comprising a valve needle 10 as described above and a valve port assembly 20, wherein the valve port assembly 20 is configured to open or close a valve port 40, the valve port assembly 20 is provided with a channel 21, the first sealing portion 111 is configured to be in sealing contact with the channel 21 to close or open the channel 21, and the hanging platform 12 is configured to abut against the valve port assembly 20 to drive the valve port assembly 20 away from or close to the valve port 40 of the valve 1000.

[0069] The valve core 100 has all the beneficial effects of the valve needle 10 described above, which will not be repeated here.

[0070] It can be understood that when the valve core 100 of the present disclosure is applied to the valve 1000, the valve needle 10 and the valve port assembly 20 cooperate with each other to close the flow passage on the valve port assembly 20 and close the valve port 40, thereby achieving the interruption of fluid; when the valve needle 10 and the valve port assembly 20 are separated from each other, and the valve port assembly 20 abuts against the valve seat 30 of the valve 1000, the fluid can flow through the flow passage in the valve port assembly 20, and the valve 1000 can be in a small flow mode; and when the valve needle 10 and the valve port assembly 20 are separated from each other, and the valve port assembly 20 is separated from the valve seat 30 of the valve 1000, the fluid can flow through the valve port 40, and the valve 1000 can be in a large flow mode.

[0071] In order to enable the valve port assembly 20 to move in the direction away from the valve port 40 under the abutting action of the hanging platform 12, optionally, as shown in Figure 5 and Figure 6 , the valve port assembly 20 comprises a valve port seat 22, the valve port seat 22 is provided with the channel 21, and the side of the valve port seat 22 close to the valve port 40 is provided with an abutting surface 23, the abutting surface 23 is arranged around the valve port 40 and is configured to abut against the hanging platform 12. In this way, when the hanging platform 12 moves in the direction away from the valve port 40 under the action of the valve needle body 11, the hanging platform 12 can abut against the abutting surface 23 on the valve port seat 22, and the valve port assembly 20 can move in the direction away from the valve port 40 under the abutting action of the hanging platform 12, thereby opening the valve port 40.

[0072] It can be understood that for the embodiment in which the hanging platform 12 comprises a connecting portion 121 and an abutting portion 122, and the connecting portion 121 is formed as a threaded rod, and the abutting portion 122 is configured as a disc-shaped member vertically connected to the threaded rod, the upper surface of the disc-shaped member can be in contact with the abutting surface 23, thereby driving the valve port assembly 20 to move in the direction away from the valve port 40.

[0073] In order to seal the gap between the valve needle 10 and the valve port assembly 20, optionally, as shown in Figure 5 , Figure 6 and Figure 7As shown, the valve needle 10 further comprises a first sealing ring 13 and a pressing ring 14, the first sealing ring 13 is sleeved on the first sealing portion 111, and the pressing ring 14 is tightly pressed on the first sealing ring 13, and the first sealing ring 13 is adapted to be in sealing contact with the valve port assembly 20.

[0074] In one aspect, the pressing ring 14 can play a role in fixing the first sealing ring 13, and the fixing of the first sealing ring 13 on the valve needle 10 is better, which effectively avoids the first sealing ring 13 from shaking in the first sealing portion 111 or even falling off from the first sealing portion 111, so that the first sealing ring 13 cannot seal the gap between the valve needle 10 and the valve port assembly 20, and the situation that the valve 1000 cannot cut off the fluid occurs.

[0075] On the other hand, the pressing ring 14 can also play a role in limiting the movement of the valve needle 10 in the valve port assembly 20, which effectively avoids the situation that the displacement of the valve needle 10 towards the valve port 40 is too large, resulting in the valve 1000 cannot be used normally.

[0076] According to a third aspect of the present disclosure, a valve 1000 is provided, comprising a valve body 200 and a valve core 100 as described above, the valve body 200 comprises a valve seat 30, the valve seat 30 is provided with a valve port 40, and the valve port assembly 20 is movably arranged in the valve body 200 to open or close the valve port 40.

[0077] The valve 1000 has all the beneficial effects of the valve core 100 described above, which will not be repeated here.

[0078] The present disclosure does not limit the working mode of the valve 1000, and by reasonably setting the position between the hanging table 12 and the valve needle body 11 in the valve 1000, the valve 1000 can have multiple working modes. For example, as an embodiment of the present disclosure, the valve 1000 comprises a closed mode and a first working mode, in the closed mode, the first sealing portion 111 is in sealing contact with the channel 21 in the valve port assembly 20 to close the channel 21, and the valve port assembly 20 is in sealing contact with the valve seat 30 to close the valve port 40, in the first working mode, the first sealing portion 111 is separated from the valve port assembly 20, and the valve port assembly 20 is in sealing contact with the valve body 200. In other words, the valve 1000 can have a small flow mode, and the valve needle 10 can realize the conduction and interruption of the channel 21 in the valve port assembly 20, so that the fluid can flow through the channel 21 in the valve port assembly 20, or the fluid is disconnected from the channel 21 in the valve port assembly 20.

[0079] Optionally, the valve 1000 can further comprise a second working mode, in which the first sealing portion 111 is in sealing contact with the valve port assembly 20 to close the passage 21, and the valve port assembly 20 is disengaged from the valve body 200 to open the valve port 40. In other words, the valve 1000 can have a large flow mode, in which the valve port assembly 20 can achieve the conduction and interruption of the valve port 40, so that the fluid can flow through the valve port 40 or be disconnected from the valve port 40.

[0080] It should be noted that the specific working mode of the valve 1000 is not limited in the present disclosure, and the valve 1000 can have a single working mode, or can have multiple working modes and be capable of switching between multiple working modes.

[0081] For example, by reasonably setting the relative position between the hanging table 12 and the valve needle body 11 in the valve 1000, the valve 1000 can be configured as a large flow throttling valve 1000, specifically, the distance between the hanging table 12 and the valve needle body 11 can be set to 0, so that when the valve needle body 11 moves, the valve port assembly 20 can only move away from the valve port 40 under the abutting action of the hanging table 12, thereby opening or closing the valve port 40, that is, the valve 1000 only has the second working mode described above.

[0082] Furthermore, by reasonably setting the relative position between the hanging table 12 and the valve needle body 11 in the valve 1000, the valve 1000 can be configured as a small flow needle valve 1000, specifically, the distance between the hanging table 12 and the valve needle body 11 can be set to be far enough, so that when the valve needle body 11 moves, the hanging table 12 provided on the valve needle body 11 will not be in contact with the valve port assembly 20 at all times, and the valve 1000 can only open the passage 21 in the valve port assembly 20 without opening the valve port 40, that is, the valve 1000 only has the first working mode described above.

[0083] In addition, by reasonably setting the relative position between the hanging table 12 and the valve needle body 11 in the valve 1000, the valve 1000 can be configured as a broken line valve 1000, specifically, as described above, when the valve 1000 is opened from the closed mode, the valve needle body 11 can first move away from the valve port assembly 20 under the action of other components in the valve 1000 to open the flow passage in the valve port assembly 20, so that the fluid can flow through the flow passage in the valve port assembly 20 at a small flow rate, and in the process of movement of the valve needle body 11, the distance between the hanging table 12 connected to the valve needle body 11 and the valve port assembly 20 gradually decreases, and when the valve needle body 11 has a certain displacement, the hanging table 12 can abut against the valve port assembly 20 and can drive the valve port assembly 20 to move away from the valve port 40 under the action of the movement of the valve needle body 11, thereby opening the valve port 40, so that the fluid can pass through the valve port 40 of the valve 1000 at a large flow rate.

[0084] When the valve 1000 switches from the open mode to the closed mode, the valve port assembly 20 of the valve 1000 moves toward the valve port 40 of the valve 1000 until it contacts the valve port 40, switching the valve 1000 from the high flow mode to the low flow mode. Simultaneously, the distance between the first sealing portion 111 on the valve needle body 11 and the flow channel within the valve port assembly 20 gradually decreases until it contacts the valve port assembly 20, thereby closing the valve 1000. In other words, the valve 1000 can simultaneously have the first and second operating modes, and can switch between the first and second operating modes.

[0085] In order to seal the gap between the valve needle 10 and the valve port assembly 20, optionally, as Figure 7 As shown, the valve port assembly 20 is provided with a needle seal seat 24. The valve needle body 11 is at least partially inserted into the needle seal seat 24, so that the first sealing portion 111 on the valve needle body 11 can form an interference fit with the inner wall of the needle seal seat 24. The needle seal seat 24 not only cooperates with the valve needle body 11 to seal the gap between the valve needle body 11 and the valve port assembly 20, but also serves to limit the movement of the valve needle 10 within the valve port assembly 20, effectively preventing the valve needle 10 from significantly displacing toward the valve port 40, which could cause the valve 1000 to malfunction.

[0086] Here, it can be understood that, for the embodiment in which the valve needle 10 includes a first sealing ring 13 and a pressure ring 14, the first sealing ring 13 is sleeved on the first sealing portion 111, the pressure ring 14 is pressed against the first sealing ring 13, and the first sealing ring 13 is suitable for sealing contact with the valve port assembly 20, the above-mentioned valve needle sealing seat 24 can cooperate with the pressure ring 14, thereby playing a role in limiting the valve needle 10.

[0087] It should be noted that the present disclosure does not limit the sealing method between the valve port assembly 20 and the valve port 40 of the valve 1000. As one embodiment of the present disclosure, the valve 1000 further includes a second sealing ring 300, which is sleeved on the valve port assembly 20 and forms an interference fit with the valve body 200. The second sealing ring 300 can seal the gap between the valve port 40 and the valve port assembly 20, thereby preventing fluid from flowing through the gap between the valve port 40 and the valve port assembly 20 when the valve port 40 is in the closed state. The valve 1000 has a better fluid interception effect.

[0088] It should be noted that the present disclosure does not limit the driving method of the valve 1000 in the above-mentioned valve 1000. The valve 1000 can be driven by any appropriate method to achieve fluid conduction and cutoff. As an embodiment of the present disclosure,Figure 1 、 Figure 2 and Figure 4 As shown in FIGS. 1-3, the valve 1000 can be an electronic valve 1000, which can include the valve body 200 and the valve core 100, and can further include a core cover 400, a magnetic rotor 500, a locking block 600, a screw rod 700 (e.g., a metal screw rod 700), a limiting spring 800, a valve needle cylinder cover, and a valve needle spring 900. The valve body 200 can be formed with a valve port 40 and a second opening 50, and the valve port assembly 20 can be arranged at the valve port 40. The valve needle 10 and the valve port assembly 20 can be used to jointly adjust the flow area of the valve 1000, so as to adjust the flow rate of the fluid.

[0089] The valve body 200 can be provided with a valve core cavity 60 for accommodating the valve core 100. The lower part of the valve core 100 can be fixed in the valve core cavity 60, and the upper part of the valve core 100 can extend into the core cover 400. The magnetic rotor 500 can be located in the core cover 400 and can be sleeved on the outside of the valve core 100. The valve core 100 can be provided with a through hole extending in the axial direction thereof. The lower end of the through hole can be in communication with the accommodating cavity at the lower end of the valve core 100 for accommodating the valve needle 10. The screw rod 700 can be arranged in the through hole. The upper end of the screw rod 700 can be fixed to the magnetic rotor 500 through the locking block 600 and the part of the screw rod 700 protruding out of the upper end surface of the valve core 100. The lower end of the screw rod 700 can be located in the accommodating cavity. The through hole can be provided with an internal thread section, and the screw rod 700 can be provided with an external thread section. The valve core 100 and the screw rod 700 can be configured as a screw-nut mechanism. The end of the valve needle 10 away from the valve seat 30 can be formed with a valve needle cavity 70 with an open upper end. The valve needle cylinder cover can be arranged at the upper end of the valve needle 10. The lower end of the valve needle spring 900 can abut against the bottom wall of the valve needle cavity 70, and the upper end of the valve needle spring 900 can abut against the screw rod 700 passing through the valve needle cylinder cover. In operation, the rotation of the magnetic rotor 500 can be controlled by an electromagnetic coil. The magnetic rotor 500 can drive the screw rod 700 to rotate. Since the screw rod 700 and the valve core 100 are configured as a screw-nut mechanism, the valve core 100 can be fixed, so that the screw rod 700 can move towards or away from the valve needle spring 900 while rotating. Thus, the valve needle 10 can move towards or away from the valve port assembly 20. When the hanging table 12 arranged on the valve needle body 11 abuts against the valve port assembly 20, the hanging table 12 can apply an action force to the valve port assembly 20 to move the valve port assembly 20 away from the valve port 40. Thus, the valve port assembly 20 can move away from the valve port 40, and the valve port 40 can be opened to adjust the flow rate.

[0090] According to a fourth aspect of the present disclosure, there is provided a heat pump system including the valve 1000 as described above.

[0091] The heat pump system has all the beneficial effects of the valve 1000 as described above, which will not be repeated here.

[0092] According to a fifth aspect of the present disclosure, there is provided a vehicle comprising the heat pump system as described above, or the valve 1000 as described above.

[0093] The vehicle has all the beneficial effects of the valve 1000 or the heat pump system described above, which will not be repeated here.

[0094] It should be noted that the present disclosure does not limit the type of vehicle, which can be any vehicle suitable for using the valve 1000 or the heat pump system. For example, the vehicle can be a car, a truck, a van, etc., and can be a pure electric vehicle, a hybrid vehicle (a range-extended vehicle), etc., which are not limited by the present disclosure.

[0095] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0096] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0097] Furthermore, any combination of various different embodiments of the present disclosure can also be made, as long as it does not deviate from the idea of the present disclosure, which should be considered as disclosed by the present disclosure.

Claims

1. A valve needle, characterized in that: include: The valve needle body is provided with a first sealing portion, wherein the first sealing portion is adapted to detachably seal and contact a passage in a valve port assembly of the valve to close or open the passage; as well as a hanging platform, configured to abut against the valve port assembly to drive the valve port assembly away from or close to the valve port of the valve; Wherein, the hanging platform is adjustably connected to the valve needle body along the axial position of the valve needle body.

2. The valve needle according to claim 1, characterized in that The valve needle body is suitable for penetrating the passage, and the hanging platform is adjustably connected to the first end of the valve needle body along the axial position of the valve needle body. The first end is the end of the valve needle body close to the valve port.

3. The valve needle according to claim 2, characterized in that The hanging platform includes a connecting portion and an abutting portion, wherein the connecting portion is adjustably connected to the valve needle body along the axial direction of the valve needle body; The abutting portion is arranged on a side of the connecting portion away from the valve needle body, and the abutting portion is used to abut against the valve port assembly.

4. The valve needle according to claim 3, characterized in that One of the valve needle body and the connecting portion is provided with a threaded hole, and one of the valve needle body and the connecting portion is provided with an external threaded section, and the external threaded section is threadedly matched with the threaded hole.

5. The valve needle according to claim 3, characterized in that The connecting portion is configured as a threaded rod, and the abutting portion is configured as a disk-shaped member vertically connected to the threaded rod.

6. The valve needle according to claim 3, characterized in that The abutting portion is used to abut against the abutting surface on the valve port assembly. Along the axial direction of the valve needle body, the distance between the abutting portion and the abutting surface is greater than or equal to 1 mm and less than or equal to 2 mm.

7. A valve core, characterized in that: comprising a valve port assembly and a valve needle according to any one of claims 1 to 6; The valve port assembly is used to open or close the valve port. A channel is provided in the valve port assembly. The first sealing portion can be detachably sealed in contact with the channel to close or open the channel. The hanging platform is constructed to be able to abut against the valve port assembly to drive the valve port assembly away from or close to the valve port of the valve.

8. The valve core according to claim 7, characterized in that: The valve port assembly includes a valve port seat, the valve port seat is provided with the channel, and a side of the valve port seat close to the valve port is provided with an abutment surface, which is arranged around the valve port and is used to abut against the hanging platform.

9. The valve core according to claim 7, characterized in that: The valve needle further includes a first sealing ring and a pressure ring. The first sealing ring is sleeved on the first sealing portion. The pressure ring is pressed against the first sealing ring. The first sealing ring is suitable for sealing contact with the valve port assembly.

10. A valve, characterized in that: comprising a valve body and a valve core according to any one of claims 7 to 9; The valve body includes a valve seat, the valve port is provided on the valve seat, and the valve port assembly is movably provided in the valve body to open or close the valve port.

11. The valve according to claim 10, characterized in that The valve includes a closing mode and a first operating mode, in which the first sealing portion is in sealing contact with the passage in the valve port assembly to close the passage, and the valve port assembly is in sealing contact with the valve seat to close the valve port; In the first operating mode, the first sealing portion is disengaged from the valve port assembly, and the valve port assembly is in sealing contact with the valve body.

12. The valve according to claim 11, characterized in that The valve further includes a second operating mode, in which the first sealing portion is in sealing contact with the valve port assembly to close the passage, and the valve port assembly is separated from the valve body to open the valve port.

13. The valve according to any one of claims 10 to 12, characterized in that The valve port assembly is provided with a valve needle sealing seat, and the valve needle body is at least partially inserted into the valve needle sealing seat, so that the first sealing portion on the valve needle body can form an interference fit with the inner wall of the valve needle sealing seat.

14. The valve according to any one of claims 10 to 12, characterized in that The valve further includes a second sealing ring, which is sleeved on the valve port assembly, and an interference fit is formed between the second sealing ring and the valve body.

15. A heat pump system, characterized in that: Comprising a valve according to any one of claims 10-14.

16. A vehicle, characterized in that: The heat pump system comprises the heat pump system according to claim 15, or the valve according to any one of claims 10-14.

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