Valve assembly and refrigerant system with same

Abstract

The utility model provides a valve assembly and a refrigerant system with the same. The valve assembly comprises an expansion valve, a valve element and a valve element, the silencer is provided with a silencing channel, a silencing inlet and a silencing outlet, the silencing inlet and the silencing outlet are communicated with the silencing channel, the silencing inlet is connected with a valve outlet of the expansion valve, the silencer comprises a silencing structure arranged in the silencing channel, the silencing structure defines a resonant cavity with the adjustable volume, and the volume of the resonant cavity can be adjusted. The silencing structure is provided with silencing holes, and the silencing channel is communicated with the resonant cavity through the silencing holes. According to the valve assembly, the resonant cavity with the adjustable volume is arranged in the noise reduction structure, the resonant cavity can reduce noise of various frequencies of the refrigerant, and therefore the noise reduction effect of the valve assembly can be improved, and the driving experience of a vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle manufacturing technical field especially valve assembly and refrigerant system with it. BACKGROUND

[0002] The refrigerant system in prior art, when refrigerant flows in the refrigerant system, the refrigerant flow can produce noise, in order to eliminate the noise, the expansion valve is generally set to weaken the sound attenuation, however, when the refrigerant flow rate changes, the noise reduction effect of expansion valve is greatly reduced, when the noise is transmitted to the vehicle, therefore, the driving experience of the vehicle is reduced. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the prior art is solved, for this, the utility model provides a valve assembly, the valve assembly can improve the driving experience of the vehicle.

[0004] The utility model further provides a refrigerant system with the valve assembly.

[0005] According to the valve assembly of the utility model embodiment, the expansion valve, the sound eliminator, the sound elimination inlet and the sound elimination outlet that the sound elimination channel is communicated with are formed to the sound eliminator, the sound elimination inlet is connected with the valve export of expansion valve, the sound eliminator includes the sound elimination structure that is arranged in the sound elimination channel, the sound elimination structure defines the resonant cavity of adjustable volume, the sound elimination structure forms the sound elimination hole, and the sound elimination channel is communicated with the resonant cavity through the sound elimination hole.

[0006] According to the valve assembly of the utility model, the resonant cavity of adjustable volume is arranged in the sound elimination structure, the resonant cavity can carry out the noise reduction to the noise of the refrigerant of multiple frequency, thereby can improve the noise reduction effect of valve assembly, improve the driving experience of the vehicle.

[0007] According to some embodiments of the utility model, the sound elimination structure includes: the fixed part is connected with the inner wall of the sound elimination channel, and the fixed part is formed into an annular shape;The cover body is movably arranged in the sound elimination channel and covers the fixed part, and the cover body and the fixed part cooperate to define the resonant cavity, and the sound elimination hole is formed on the cover body;The telescopic piece is telescopic, and the cover body is connected with the inner wall of the sound elimination channel through the telescopic piece, and / or the telescopic piece is a telescopic rod.

[0008] According to some optional embodiments of the utility model, the fixed part includes two connecting plates, both the connecting plates are annular and are sleeved inside and outside, the two connecting plates cooperate to define a guide groove, and the periphery of the open mouth of the cover body cooperates in the guide groove.

[0009] According to some embodiments of the utility model, the sound absorber further comprises: a partition structure, the partition structure comprises a first partition plate and a second partition plate arranged in the sound absorption channel, the first partition plate and the second partition plate are arranged on the two opposite side walls of the sound absorption channel respectively and extend towards each other, the first partition plate and the second partition plate are arranged alternately in the direction from the sound absorption inlet to the sound absorption outlet, the number of the partition structure is two, and the two partition structures are arranged between the sound absorption structure and the sound absorption inlet and between the sound absorption structure and the sound absorption outlet respectively.

[0010] According to some embodiments of the utility model, the sound absorption channel comprises: a first section, a second section and a third section connected in sequence along the fluid flow direction, and the sound absorber is arranged in the second section, wherein, in the direction from the first section to the third section, the cross-sectional area of the first section gradually increases and then gradually decreases, the cross-sectional area of the third section gradually increases and then gradually decreases, and the sound absorber further comprises: a defoaming net, the defoaming net is arranged in the first section and is formed into a tapered shape protruding towards the second section.

[0011] According to some embodiments of the utility model, the valve assembly comprises: a first pipe connected with the sound absorption outlet of the sound absorber, a second pipe detachably connected with the first pipe, the second pipe being used for connecting an external pipe, and / or the first pipe and the second pipe are connected in a plug-in mode.

[0012] According to some optional embodiments of the utility model, one of the first pipe and the second pipe is provided with a convex column and the other is provided with a groove, the convex column extends along the axial direction of the first pipe and the second pipe and is matched with the groove.

[0013] According to some embodiments of the utility model, the outer side of the first pipe is provided with an annular first clamp, the outer side of the second pipe is provided with an annular second clamp, and the first clamp and the second clamp are connected in a magnetic mode.

[0014] According to some optional embodiments of the present application, the valve assembly comprises: an adjusting mechanism, the first clamp and the second clamp are arranged on the adjusting mechanism, the adjusting mechanism is configured to adjust the relative position of the first clamp and the second clamp in the axial direction of the first pipe and the second pipe, and the adjusting mechanism comprises: a mounting table, a lead screw, the lead screw is rotatably arranged on the mounting table, the lead screw comprises first and second thread segments arranged in the axial direction of the lead screw and having opposite rotation directions, first and second connecting blocks, the first and second connecting blocks are slidably arranged on the mounting table along the length direction of the lead screw and are sleeved on the first and second thread segments respectively, and the first connecting block is fixed with the first clamp, and the second connecting block is fixed with the second clamp.

[0015] According to the refrigerant system of the second aspect of the present application, the valve assembly of the first aspect of the present application is provided.

[0016] According to the refrigerant system of the present application, the valve assembly of the first aspect of the present application is provided, and the resonant cavity with adjustable volume is arranged in the sound attenuation structure, the resonant cavity can reduce the noise of the refrigerant at multiple frequencies, thereby improving the noise reduction effect of the valve assembly and improving the driving experience of the vehicle.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of an angle of the valve assembly according to the embodiments of the present application;

[0019] Figure 2 is Figure 1 is a schematic view of another angle of the valve assembly shown in FIG.

[0020] Figure 3 is Figure 2 is a sectional view of the muffler shown in FIG.

[0021] Figure 4 is Figure 3 is a schematic view of part of the structure of the fixing part shown in FIG.

[0022] Figure 5 is Figure 3 is a schematic view of the cover body and the telescopic member shown in FIG.

[0023] Figure 6 is Figure 1 is a local enlarged view of A in FIG.

[0024] Figure 7is Figure 6 a schematic view of the first pipe and the second pipe cooperating as shown in Fig.

[0025] Figure 8 is Figure 6 a schematic view of the adjusting mechanism as shown in Fig.

[0026] Reference signs:

[0027] 100, valve assembly;

[0028] 10, expansion valve;

[0029] 20, muffler; 21, muffling structure; 211, fixed part; 2111, connecting plate; 2112, guide groove; 212, cover body; 2121, muffling hole; 213, telescopic part; 214, resonance cavity; 22, partition structure; 221, first partition plate; 222, second partition plate; 23, defoaming net;

[0030] 201, muffling inlet; 202, muffling outlet; 203, muffling channel; 2031, first section; 2032, second section; 2033, third section;

[0031] 30, first pipe; 31, protruding column; 32, first clamp;

[0032] 40, second pipe; 41, recess; 42, second clamp;

[0033] 50, adjusting mechanism; 51, mounting table; 52, screw rod; 521, first threaded section; 522, second threaded section; 53, first connecting block; 54, second connecting block;

[0034] 60, mounting plate. DETAILED DESCRIPTION

[0035] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] Reference will be made to the drawings below Figures 1-8 A valve assembly 100 according to an embodiment of the present application is described below.

[0037] Reference is made to Figure 1 , Figure 3 , Figure 4 and Figure 5According to the valve assembly 100, the sound absorbing structure 21 is arranged in the sound absorbing structure 21, and the resonance cavity 214 with adjustable volume can be arranged in the sound absorbing structure 21, so that the noise of the refrigerant with multiple frequencies can be reduced, and the noise reduction effect of the valve assembly 100 can be improved, and the driving experience of the vehicle can be improved.

[0038] For example, as shown in Figure 1 、 Figure 3 、 Figure 4 and Figure 5 , the sound absorbing channel 203 extends in the front-rear direction, the sound absorbing inlet 201 is arranged at the rear end of the sound absorbing channel 203, and the sound absorbing outlet 202 is arranged at the front end of the sound absorbing channel 203.

[0039] When the valve assembly 100 is running, the refrigerant flows into the sound absorbing channel 203 from the sound absorbing inlet 201 of the expansion valve 10, and then the refrigerant flows into the resonance cavity 214 through the sound absorbing hole 2121, the different flow speeds of the refrigerant produce different frequency noises, the volume of the resonance cavity 214 adjusts the sound absorbing frequency following the flow speed of the refrigerant, the refrigerant flows to the sound absorbing channel 203 through the sound absorbing hole 2121 after the noise reduction in the resonance cavity 214, and finally the refrigerant flows out of the sound absorbing outlet 202 of the sound absorbing device 20.

[0040] The valve assembly 100 of the utility model, resonance cavity 214 with adjustable volume is arranged in sound absorbing structure 21, the volume change of resonance cavity 214 can reduce the noise of multiple frequencies of refrigerant, so as to improve the noise reduction effect of valve assembly 100, weaken the noise of refrigerant flow, therefore can effectively prevent the sound of refrigerant flow from being transmitted to the vehicle, and then the driving experience of the vehicle can be effectively improved, and simultaneously, sound absorbing structure 21 can reduce the noise of multiple frequencies, even if the flow speed of refrigerant changes, for example, the vehicle changes from the form state to the idling state, or the air conditioning switch of the vehicle is adjusted to the low gear, the flow speed of refrigerant changes from fast to slow, through the adjustment of the volume of resonance cavity 214, the noise reduction effect of sound absorbing structure 21 can still be guaranteed, so that the versatility of the noise reduction function of sound absorbing structure 21 can be guaranteed.

[0041] According to the valve assembly 100 of the embodiment of the utility model, the resonance cavity 214 with adjustable volume is arranged in the sound absorbing structure 21, the resonance cavity 214 can reduce the noise of multiple frequencies of refrigerant, so that the noise reduction effect of the valve assembly 100 can be improved, and the driving experience of the vehicle can be improved.

[0042] According to some embodiments of the utility model, refer to Figure 3 、 Figure 4 andFigure 5 The noise reduction structure 21 includes a fixing part 211, a cover 212, and a telescopic member 213. The fixing part 211 is connected to the inner wall of the noise reduction channel 203 and is formed in an annular shape. The cover 212 is movably disposed within the noise reduction channel 203 and covers the fixing part 211. The cover 212 and the fixing part 211 cooperate to define a resonant cavity 214, and a noise reduction hole 2121 is formed on the cover 212. The telescopic member 213 is telescopic, and the cover 212 is connected to the inner wall of the noise reduction channel 203 through the telescopic member 213.

[0043] In this way, the cover 212 and the fixing part 211 cooperate to define the resonant cavity 214. This arrangement is structurally reasonable and the resonant cavity 214 is simple in its arrangement, which can ensure the rationality of the design of the sound-absorbing structure 21. At the same time, the volume of the resonant cavity 214 can be adjusted by moving the cover 212 relative to the fixing part 211. This adjustment method is convenient, which can ensure that the volume of the resonant cavity 214 can be adjusted at any time according to the flow rate of the refrigerant, thereby ensuring the noise reduction effect.

[0044] Furthermore, by utilizing the telescopic effect of the telescopic component 213, the cover 212 can move relative to the fixed part 211. Therefore, the cover 212 can be fixed to the inner wall of the silencing channel 203, and the volume of the resonant cavity 214 can be adjusted normally by the cover 212. In addition, the telescopic component 213 can not only provide support for the cover 212 and prevent the cover 212 from causing stress overload on the inner wall of the silencing channel 203, but also prevent the cover 212 from deviating from its position during up and down movement, ensuring the accuracy of the movement position. The telescopic component 213 is symmetrically arranged, which better balances the force and improves the stability of the movement during the pulling process.

[0045] For example, such as Figure 3 , Figure 4 and Figure 5 As shown, the lower end of the fixing part 211 is connected to the inner wall of the silencing channel 203, and the upper end of the fixing part 211 extends upward. The fixing part 211 is rectangular, and the cover 212 is a rectangular shell with an open lower side. The cover 212 covers the upper side of the fixing part 211, and a resonance cavity 214 is defined between the cover 212 and the fixing part 211. The cover 212 moves up and down relative to the fixing part 211 to adjust the volume of the resonance cavity 214. The telescopic member 213 is provided on the upper side of the cover 212, and the telescopic member 213 is connected between the cover 212 and the inner wall of the silencing channel 203. The silencing hole 2121 is provided on the cover 212, and each side of the cover 212 is provided with a silencing hole 2121.

[0046] Further, the number of the sound attenuation structures 21 can be set according to actual needs, and can be one or more, and the natural frequency of the resonance cavity 214 formed by the cover body 212 and the fixing part 211 can be the same, so that at least two resonance cavities 214 with the same natural frequency exist in the sound attenuator 20 at the same time, and the noise sound waves of the corresponding frequency band can be eliminated by using the above-mentioned multiple resonance cavities 214 with the same natural frequency, and the sound attenuation effect of the noise of the specific frequency band is enhanced by forming a superposition effect.

[0047] According to some optional embodiments of the utility model, referring to Figure 3 and Figure 5 , the fixing part 211 comprises two connecting plates 2111, and the two connecting plates 2111 are annular and sleeved inside and outside, and the two connecting plates 2111 cooperatively define a guide groove 2112, and the open edge of the cover body 212 is fitted in the guide groove 2112. Therefore, the connecting plate 2111 is simple in structure, so that the processing of the fixing part 211 is facilitated, and meanwhile, the structure of the guide groove 2112 defined by the two connecting plates 2111 is reasonable, and the guide groove 2112 does not need to be additionally processed, so that the processing steps can be saved, and the processing efficiency is improved.

[0048] For example, as shown in Figure 3 and Figure 5 , the two connecting plates 2111 are sleeved inside and outside, and the guide groove 2112 extending in the up-down direction is defined between the two connecting plates 2111, and the lower end of the cover body 212 is fitted in the guide groove 2112.

[0049] According to some embodiments of the utility model, referring to Figure 3 and Figure 4 , the telescopic piece 213 is a telescopic rod. Therefore, the telescopic rod can ensure that the telescopic piece 213 normally telescopes, so that the cover body 212 can move relative to the fixing part 211, and the volume of the resonance cavity 214 can be normally adjusted, and meanwhile, the telescopic rod is simple in structure and convenient to arrange.

[0050] For example, as shown in Figure 3 and Figure 4 , two telescopic rods are arranged at intervals. Preferably, the upper end of the telescopic rod is rotatably connected with the inner wall of the sound attenuation channel 203, and the lower end of the telescopic rod is rotatably connected with the shell of the cover body 212, so that the cover body 212 can move up and down in the guide groove 2112.

[0051] Further, as shown in Figure 3 and Figure 4As shown, the telescopic part 213 can also be driven by different types such as electric push rod, telescopic cylinder, motor, etc. to drive the telescopic part 213 to extend and retract, cooperate with the telescopic part 213 to effectively move up and down, and then change the volume of the resonance cavity 214 and adjust the sound wave frequency of the resonance cavity 214.

[0052] According to some embodiments of the present application, referring to Figure 1 and Figure 2 The muffler 20 further comprises a partition structure 22, the partition structure 22 comprises a first baffle 221 and a second baffle 222 arranged in the sound attenuation channel 203, the first baffle 221 and the second baffle 222 are arranged on the two opposite side walls of the sound attenuation channel 203 respectively, and extend towards each other, and the first baffle 221 and the second baffle 222 are arranged alternately in the direction from the sound inlet 201 to the sound outlet 202.

[0053] In this way, the first baffle 221 and the second baffle 222 can reflect and interfere with sound waves, so as to perform noise attenuation treatment on the noise generated by the refrigerant, that is, the sound waves of the obstacles themselves interact with the noise sound waves, and the interaction can cause the noise frequency components to interfere and be weakened, thereby achieving the effect of noise reduction, so as to perform noise attenuation treatment on the noise generated by the refrigerant, thereby ensuring the noise attenuation effect of the muffler 20, and the first baffle 221 and the second baffle 222 define the flow direction of the refrigerant, so as to make the refrigerant flow along the preset path, thereby maximizing the noise attenuation effect of the first baffle 221 and the second baffle 222 on the refrigerant.

[0054] For example, as shown in Figure 1 and Figure 2 The first baffle 221 extends in the up-down direction, the upper end of the first baffle 221 is connected with the upper side wall of the sound attenuation channel 203, the lower end of the first baffle 221 extends downward, the second baffle 222 extends in the up-down direction, the lower end of the second baffle 222 is connected with the lower side wall of the sound attenuation channel 203, and the upper end of the second baffle 222 extends upward, and the first baffle 221 and the second baffle 222 are arranged alternately in the front-rear direction.

[0055] According to some optional embodiments of the present application, referring to Figure 1 and Figure 2 The number of partition structures 22 is two, and the two partition structures 22 are arranged between the sound attenuation structure 21 and the sound inlet 201 and between the sound attenuation structure 21 and the sound outlet 202. Therefore, the two partition structures 22 are arranged at reasonable positions, can perform noise attenuation treatment on the inflow and outflow of the refrigerant, thereby ensuring the noise attenuation effect of the valve assembly 100 and reducing the influence of the noise generated by the refrigerant on the interior of the vehicle.

[0056] Further, the sound absorber 20 can also be filled with sound-absorbing materials such as foamed plastic, glass fiber, etc., so that the noise reduction effect of the sound absorber 20 can be further improved.

[0057] According to some embodiments of the present application, referring to Figure 1 and Figure 2 , the sound-absorbing channel 203 comprises a first section 2031, a second section 2032 and a third section 2033 connected in sequence along the fluid flow direction, and the sound absorber 20 is arranged in the second section 2032, wherein in the direction from the first section 2031 to the third section 2033, the cross-sectional area of the first section 2031 gradually increases and then gradually decreases, and the cross-sectional area of the third section 2033 gradually increases and then gradually decreases.

[0058] In this way, during the process of the refrigerant flowing from the sound-absorbing inlet 201 to the sound-absorbing structure 21, the structure form limiting the cross-sectional area of the first section 2031 can effectively reflect the noise sound waves, so as to expand the transmission distance of the sound waves, and thus the noise can be attenuated during the propagation process. At the same time, during the process of the refrigerant flowing from the sound-absorbing structure 21 to the sound-absorbing outlet 202, the second section 2032 and the first section 2031 have the same effect on sound waves, so as to further attenuate the noise, and thus the noise reduction effect of the valve assembly 100 can be ensured.

[0059] For example, as shown in Figure 1 and Figure 2 , in the direction from back to front, the first section 2031, the second section 2032 and the third section 2033 are arranged in sequence, the sound-absorbing structure 21 is arranged in the second section 2032, and the cross-sectional area of the first section 2031 gradually increases and then gradually decreases, and the cross-sectional area of the second section 2032 gradually increases and then gradually decreases.

[0060] According to some optional embodiments of the present application, referring to Figure 1 and Figure 2 , the sound absorber 20 further comprises a defoaming net 23, and the defoaming net 23 is arranged in the first section 2031 and formed as a tapered shape protruding towards the second section 2032. In this way, the defoaming net 23 can eliminate the bubbles in the refrigerant, so as to avoid the noise caused by the explosion of the bubbles, and at the same time, the defoaming net 23 is arranged as a tapered structure, which can effectively expand the contact area with the gasified refrigerant and improve the effect of absorbing the bubbles.

[0061] For example, as shown in Figure 1 and Figure 2As shown, the defoaming net 23 is a forward convex conical structure, and the defoaming net 23 is arranged between the sound insulation inlet 201 and the partition structure 22 in the first section 2031. Preferably, the defoaming net 23 is a stainless steel mesh, which can be used to absorb the gaseous refrigerant, separate water and gas, so that the gaseous refrigerant can be re-collected into liquefied refrigerant on the stainless steel mesh, and at the same time, the stainless steel mesh can improve the service life of the defoaming net 23 due to its anti-rust effect, and in addition, the stainless steel mesh is connected with the inner wall of the sound insulation channel 203 in an embedded manner, so that the maintenance and replacement of the defoaming net 23 can be facilitated.

[0062] According to some embodiments of the present application, referring to Figure 1 , Figure 6 and Figure 7 , the valve assembly 100 comprises a first pipe 30 and a second pipe 40, the first pipe 30 is connected with the sound insulation outlet 202 of the sound absorber 20, and the second pipe 40 is detachably connected with the first pipe 30, and the second pipe 40 is used to connect an external pipe. Thus, the valve assembly 100 can be connected with the external pipe through the first pipe 30 and the second pipe 40, so that the communication between the valve assembly 100 and the external structure can be facilitated, and at the same time, the sound absorber 20 will not be affected when the first pipe 30 and the second pipe 40 are matched, so that the sound absorber 20 can be protected.

[0063] For example, as shown in Figure 1 , Figure 6 and Figure 7 , the rear end of the first pipe 30 is connected with the sound insulation outlet 202 of the sound absorber 20, the front end of the first pipe 30 is detachably connected with the rear end of the second pipe 40, and the front end of the second pipe 40 is connected with an external pipe.

[0064] According to some optional embodiments of the present application, referring to Figure 6 and Figure 7 , the first pipe 30 is insertedly connected with the second pipe 40. Thus, the connection form of the inserted connection is simple and convenient to operate, so that the connection efficiency of the first pipe 30 and the second pipe 40 can be effectively improved.

[0065] According to some optional embodiments of the present application, referring to Figure 6 and Figure 7 , one of the first pipe 30 and the second pipe 40 is provided with a protruding column 31 and the other is provided with a recess 41, the protruding column 31 extends along the axial direction of the first pipe 30 and the second pipe 40 and is matched in the recess 41. Thus, during the matching and installation of the first pipe 30 and the second pipe 40, the first pipe 30 and the second pipe 40 can be accurately positioned, so that the matching and installation of the first pipe 30 and the second pipe 40 can be facilitated, and at the same time, the matching of the recess 41 and the protruding column 31 can ensure the connection sealing between the first pipe 30 and the second pipe 40, so that the leakage of refrigerant from the connection between the first pipe 30 and the second pipe 40 can be effectively prevented.

[0066] For example, as shown in Figure 6 and Figure 7 , two convex columns 31 are arranged on the outer side surface of the first pipe 30 and extend in the front-rear direction, the two convex columns 31 are arranged in the circumferential direction of the first pipe 30, and two recesses 41 are arranged on the inner side surface of the second pipe 40 and extend in the front-rear direction, the two recesses 41 correspond to the two convex columns 31 one by one.

[0067] According to some optional embodiments of the utility model, referring to Figure 6 and Figure 7 , the outer side of the first pipe 30 is sleeved with an annular first clamp 32, the outer side of the second pipe 40 is sleeved with an annular second clamp 42, and the first clamp 32 and the second clamp 42 are magnetically connected. Thus, after the first pipe 30 and the second pipe 40 are connected in a plug-in manner, through the cooperation of the first clamp 32 and the second clamp 42, the connection strength of the first pipe 30 and the second pipe 40 can be strengthened, so that the separation of the first pipe 30 and the second pipe 40 can be effectively prevented, and at the same time, the sealing property between the first pipe 30 and the second pipe 40 can be guaranteed. In addition, the first clamp 32 and the second clamp 42 are magnetically connected, so that the relative movement of the first clamp 32 and the second clamp 42 can be prevented.

[0068] For example, as shown in Figure 6 and Figure 7 , the outer side of the first pipe 30 is sleeved with the first clamp 32, the outer side of the second pipe 40 is sleeved with the second clamp 42, Figure 7 , B is the magnetic attraction position of the first clamp 32 and the second clamp 42.

[0069] Further, as shown in Figure 6 and Figure 7 , the first clamp 32 is provided with a fastening bolt, the second clamp 42 is provided with a fastening bolt, and when the first pipe 30 and the second pipe 40 are connected in a plug-in manner, the clamping force of the first clamp 32 and the second clamp 42 on the first pipe 30 and the second pipe 40 can be guaranteed, so that the separation of the first pipe 30 and the second pipe 40 can be effectively prevented, and the sealing property of the first pipe 30 and the second pipe 40 can be guaranteed.

[0070] According to some optional embodiments of the utility model, referring to Figure 6 , Figure 7 and Figure 8 , the valve assembly 100 comprises an adjusting mechanism 50, the first clamp 32 and the second clamp 42 are arranged on the adjusting mechanism 50, and the adjusting mechanism 50 is configured to adjust the first clamp 32 and the second clamp 42 in the axial direction of the first pipe 30 and the second pipe 40 (as shown in Figure 6The relative position in the front-rear direction). Thus, by providing the adjusting mechanism 50, the connection of the first pipe 30 and the second pipe 40 can be facilitated, and the connection time can be saved and the assembly efficiency can be improved compared with the flange connection form in the prior art.

[0071] According to some optional embodiments of the present application, referring to Figure 6 , Figure 7 and Figure 8 , the adjusting mechanism 50 comprises a mounting table 51, a lead screw 52, a first connecting block 53 and a second connecting block 54. The lead screw 52 is rotatably arranged on the mounting table 51, and the lead screw 52 comprises a first threaded section 521 and a second threaded section 522 arranged in the axial direction of the lead screw 52 and having opposite rotation directions. The first connecting block 53 and the second connecting block 54 are slidably arranged on the mounting table 51 along the length direction of the lead screw 52 (e.g. the front-rear direction of the lead screw 52 as shown in the drawings), and are respectively sleeved on the first threaded section 521 and the second threaded section 522. The first connecting block 53 is fixed with the first clamp 32, and the second connecting block 54 is fixed with the second clamp 42. Figure 6

[0072] In this way, the mounting table 51 provides a setting position for the lead screw 52, the first connecting block 53 and the second connecting block 54, so that the arrangement of the lead screw 52, the first connecting block 53 and the second connecting block 54 can be facilitated. Meanwhile, the lead screw 52 can drive the first connecting block 53 and the second connecting block 54 to move, so that the relative position adjustment of the first clamp 32 and the second clamp 42 can be realized through the first connecting block 53 and the second connecting block 54, and the first connecting block 53 and the second connecting block 54 can be prevented from shaking during movement. In addition, when the first clamp 32 and the second clamp 42 reach the appropriate position, the rotation directions of the first threaded section 521 and the second threaded section 522 are opposite, so that the self-locking of the first connecting block 53 and the second connecting block 54 can be realized, and the first connecting block 53 and the second connecting block 54 can be prevented from moving relative to the lead screw 52.

[0073] For example, as shown in Figure 6 , Figure 7 and Figure 8 , the mounting table 51 is provided with the lead screw 52 extending in the front-rear direction, the rear end of the lead screw 52 is provided with the first threaded section 521, the front end of the lead screw 52 is provided with the second threaded section 522, the first connecting block 53 is connected with the first clamp 32, the first connecting block 53 is sleeved on the first threaded section 521, the first connecting block 53 slides within the range of the first threaded section 521, the second connecting block 54 is connected with the second clamp 42, the second connecting block 54 is sleeved on the second threaded section 522, and the second connecting block 54 slides within the range of the second threaded section 522.

[0074] Further, as shown in Figure 6 , Figure 7 and​​​Figure 8 As shown in

[0075] In the process of installing the first pipe 30 and the second pipe 40 by using the adjusting mechanism 50, the screw rod 52 is rotated, the screw rod 52 drives the first connecting block 53 to slide on the first threaded section 521 and the second connecting block 54 to slide on the second threaded section 522, the first connecting block 53 drives the first clamp 32 to move through the corresponding arc-shaped plate, the second connecting block 54 drives the second clamp 42 to move through the corresponding arc-shaped plate, thereby realizing the plug-in connection of the first pipe 30 and the second pipe 40, in the process of plugging the first pipe 30 and the second pipe 40, the convex column 31 of the first pipe 30 is deeply inserted into the corresponding groove 41 until the first pipe 30 and the second pipe 40 reach the appropriate position, at the same time, the first clamp 32 and the second clamp 42 are magnetically connected, finally the fastening bolt is tightened, thereby completing the connection of the first pipe 30 and the second pipe 40.

[0076] Further, as shown in Figure 6 、 Figure 7 and Figure 8 , the first connecting block 53 and the second connecting block 54 can be provided with spring rods connected with the mounting table 51, so that the buffering protection effect can be increased, in order not to affect the normal movement of the first connecting block 53 and the second connecting block 54, the bottom end of the spring rod is provided with a pushing block matched with the spring rod, and the pushing block can move together with the first connecting block 53 and the second connecting block 54 in the front-rear direction of the mounting table 51, so that the spring rod can normally move and work, and the first connecting block 53 and the second connecting block 54 can have a certain elastic buffering protection effect.

[0077] Further, as shown in Figure 1 and Figure 2 , the upper side of the expansion valve 10 is provided with a mounting plate 60, the mounting plate 60 is fixed with the vehicle body, the upper side of the mounting plate 60 is provided with a magnetic surface, so that the magnetic connection of the mounting plate 60 and the vehicle body can be realized, and then the separation of the valve assembly 100 and the vehicle body can be effectively prevented.

[0078] According to the refrigerant system of the second aspect of the present application, referring to Figure 1 、 Figure 2 and Figure 3 , the valve assembly 100 of the first aspect of the present embodiment is included.

[0079] The refrigerant system according to the embodiment of the utility model, through setting the valve assembly 100 of the first aspect embodiment, the resonant cavity 214 with adjustable volume is arranged in the sound attenuation structure 21, the resonant cavity 214 can carry out noise reduction to the noise of the refrigerant of multiple frequencies, so that the noise reduction effect of the valve assembly 100 can be improved, and the driving experience of the vehicle is improved.

[0080] Reference will be made to Figures 1-8 The refrigerant system according to the embodiment of the utility model is described.

[0081] The refrigerant system according to the embodiment of the utility model, the refrigerant system is applied to a vehicle, such as Figure 1 As shown in the figure, the refrigerant system comprises a valve assembly 100, and the valve assembly 100 comprises an expansion valve 10, a sound attenuator 20, a first pipe 30, a second pipe 40, an adjusting mechanism 50 and a mounting plate 60.

[0082] Specifically, the sound attenuator 20 is formed with a sound attenuation channel 203 and a sound attenuation inlet 201 and a sound attenuation outlet 202 communicated with the sound attenuation channel 203, the sound attenuation inlet 201 is arranged at the rear end of the sound attenuation channel 203, the sound attenuation outlet 202 is arranged at the front end of the sound attenuation channel 203, the sound attenuation channel 203 comprises a first section 2031, a second section 2032 and a third section 2033, the first section 2031, the second section 2032 and the third section 2033 are arranged in order from back to front, and in the direction from back to front, the cross-sectional area of the first section 2031 gradually increases first and then gradually decreases, and the cross-sectional area of the third section 2033 gradually increases first and then gradually decreases.

[0083] The sound attenuator 20 is provided with a sound attenuation structure 21, and the sound attenuation structure 21 is located in the second section 2032, and the sound attenuation structure 21 comprises a fixed part 211, a cover body 212 and an extension piece 213, the lower end of the fixed part 211 is connected with the lower side wall of the sound attenuation channel 203, the upper end of the fixed part 211 extends upward, the fixed part 211 comprises two connecting plates 2111, the two connecting plates 2111 are annular and are sleeved inside and outside, the two connecting plates 2111 cooperatively define a guide groove 2112, the cover body 212 is covered on the fixed part 211, the cover body 212 cooperates with the fixed part 211 to define a resonant cavity 214, the periphery of the open mouth of the cover body 212 is movably fitted in the guide groove 2112 so that the volume of the resonant cavity 214 is adjustable, a sound attenuation hole 2121 is formed on the cover body 212, the extension piece 213 is telescopic, the extension piece 213 is arranged on the upper side of the cover body 212, and the cover body 212 is connected with the upper inner wall of the sound attenuation channel 203 through the extension piece 213. The sound attenuator 20 can be provided with a plurality of sound attenuation structures 21, and the plurality of sound attenuation structures 21 cooperatively attenuate the noise of the refrigerant in the sound attenuation channel 203.

[0084] The muffler 20 is provided with a partition structure 22, the partition structure 22 includes a first partition plate 221 and a second partition plate 222 arranged in the sound attenuation channel 203, the first partition plate 221 is arranged on the upper side wall of the sound attenuation channel 203, the second partition plate 222 is arranged on the lower side wall of the sound attenuation channel 203, the first partition plate 221 and the second partition plate 222 extend towards each other, and the first partition plate 221 and the second partition plate 222 are arranged alternately in the rear-to-front direction. The number of the partition structure 22 is two, and the two partition structures 22 are respectively arranged between the sound attenuation structure 21 and the sound inlet 201, and between the sound attenuation structure 21 and the sound outlet 202. The muffler 20 further includes a defoaming net 23, the defoaming net 23 is arranged in the first section 2031 and is formed into a taper shape protruding towards the second section 2032.

[0085] The first pipe 30 is connected with the sound outlet 202 of the muffler 20, the second pipe 40 is connected with the first pipe 30 in a plug-in manner, and the second pipe 40 is used for connecting an external pipe. The first pipe 30 is provided with a convex column 31, the second pipe 40 is provided with a groove 41, the convex column 31 extends in the front-to-back direction and is matched with the groove 41. The outer side of the first pipe 30 is sleeved with an annular first clamp 32, the outer side of the second pipe 40 is sleeved with an annular second clamp 42, and the first clamp 32 and the second clamp 42 are magnetically connected.

[0086] The adjusting mechanism 50 includes a mounting table 51, a lead screw 52, a first connecting block 53 and a second connecting block 54, the lead screw 52 is rotatably arranged on the mounting table 51, the lead screw 52 includes a first threaded section 521 and a second threaded section 522 arranged in the front-to-back direction of the lead screw 52 and having opposite rotation directions, the first connecting block 53 is sleeved on the first threaded section 521 and is slidable in the front-to-back direction of the lead screw 52, and the second connecting block 54 is sleeved on the second threaded section 522 and is slidable in the front-to-back direction of the lead screw 52, wherein the first connecting block 53 is fixed with the first clamp 32 through a corresponding arc-shaped plate, and the second connecting block 54 is fixed with the second clamp 42 through a corresponding arc-shaped plate.

[0087] The mounting plate 60 is arranged on the upper side of the expansion valve 10, the mounting plate 60 is connected with the vehicle body, and the mounting plate 60 is provided with a magnetic attraction surface matched with the vehicle body in a magnetic attraction manner.

[0088] During the operation of the refrigerant system, the refrigerant flows to the sound-eliminating inlet 201 of the sound-eliminating device 20 through the expansion valve 10, and then the refrigerant flows to the defoaming net 23 of the sound-eliminating channel 203 through the sound-eliminating inlet 201, and after the defoaming effect of the defoaming net 23, the refrigerant flows to the sound-eliminating device 20 through the space defined by the first partition plate 221 and the second partition plate 222 of the rear partition structure 22, and then the refrigerant flows to the resonance cavity 214 through the sound-eliminating hole 2121, at this time, the telescopic rod drives the cover 212 to move up and down to adjust the volume of the resonance cavity 214, and the sound-eliminating work of the refrigerant is completed, and then the refrigerant flows out of the resonance cavity 214 through the sound-eliminating hole 2121, and then the refrigerant flows to the space defined by the first partition plate 221 and the second partition plate 222 of the front partition structure 22, and then the refrigerant flows out of the sound-eliminating channel 203 through the sound-eliminating outlet 202, and then the refrigerant flows to the second pipe 40 through the first pipe 30, and finally, the refrigerant flows to the external pipe through the second pipe 40, at this time, the noise reduction work in the refrigerant system is completed.

[0089] The refrigerant system of the embodiment is provided with the valve assembly 100 of the first aspect, and the resonance cavity 214 with adjustable volume is arranged in the sound-eliminating structure 21, the resonance cavity 214 can reduce the noise of the refrigerant with multiple frequencies, so that the noise reduction effect of the valve assembly 100 is improved, and the driving experience of the vehicle is improved.

[0090] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0091] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0092] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection, also can be communication;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0093] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0094] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A valve assembly (100) characterized by, The muffler (20) comprises a sound-damping passage (203) and a sound-damping inlet (201) and a sound-damping outlet (202) communicating with the sound-damping passage (203), the sound-damping inlet (201) is connected with a valve outlet of the expansion valve (10), the muffler (20) comprises a sound-damping structure (21) arranged in the sound-damping passage (203), the sound-damping structure (21) defines a resonant cavity (214) with adjustable volume, the sound-damping structure (21) is formed with a sound-damping hole (2121), the sound-damping passage (203) communicates with the resonant cavity (214) through the sound-damping hole (2121). The sound-damping structure (21) comprises: a fixed part (211) connected with an inner wall of the sound-damping passage (203), the fixed part (211) is formed in an annular shape; 2. The valve assembly (100) according to claim 1, characterized in that a cover body (212) movably arranged in the sound-damping passage (203) and covering the fixed part (211), the cover body (212) cooperates with the fixed part (211) to define the resonant cavity (214), the sound-damping hole (2121) is formed on the cover body (212); a telescopic part (213), the cover body (212) is connected with the inner wall of the sound-damping passage (203) through the telescopic part (213), and / or the telescopic part (213) is a telescopic rod. The fixed part (211) comprises two connecting plates (2111), both of the connecting plates (2111) are annular and sleeved, the two connecting plates (2111) cooperatively define a guide groove (2112), an open edge of the cover body (212) is fitted in the guide groove (2112). The muffler (20) further comprises a separation structure (22) comprising a first partition plate (221) and a second partition plate (222) arranged in the sound-damping passage (203), the first partition plate (221) and the second partition plate (222) are respectively arranged on two opposite side walls of the sound-damping passage (203) and extend towards each other, the first partition plate (221) and the second partition plate (222) are alternately arranged in a direction from the sound-damping inlet (201) to the sound-damping outlet (202), the number of the separation structure (22) is two, the two separation structures (22) are respectively arranged between the sound-damping structure (21) and the sound-damping inlet (201) and between the sound-damping structure (21) and the sound-damping outlet (202).

3. The valve assembly (100) of claim 2, wherein, The sound-damping passage (203) comprises a first section (2031), a second section (2032) and a third section (2033) connected in sequence in a fluid flow direction, the muffler (20) is arranged in the second section (2032), 4. The valve assembly (100) of claim 1, wherein, ​ 5. The valve assembly (100) of claim 1, wherein, ​ The cross-sectional area of the first section (2031) gradually increases and then gradually decreases in the direction from the first section (2031) to the third section (2033), the cross-sectional area of the third section (2033) gradually increases and then gradually decreases, and the muffler (20) further comprises a defoaming net (23) arranged in the first section (2031) and formed as a taper protruding towards the second section (2032).

6. The valve assembly (100) of claim 1, wherein, Comprising: a first pipe (30) connected with a muffler outlet (202) of the muffler (20); a second pipe (40) detachably connected with the first pipe (30), the second pipe (40) being used for connecting an external pipe part, and / or the first pipe (30) and the second pipe (40) are connected in a plug-in manner.

7. The valve assembly (100) of claim 6, characterized in that One of the first pipe (30) and the second pipe (40) is provided with a convex column (31) extending along the axial direction of the first pipe (30) and the second pipe (40) and matched with a groove (41) of the other pipe.

8. The valve assembly (100) of claim 6, wherein, The first pipe (30) is provided with an annular first clamp (32) on the outside, the second pipe (40) is provided with an annular second clamp (42) on the outside, and the first clamp (32) and the second clamp (42) are magnetically connected.

9. The valve assembly (100) of claim 8, characterized in that Comprising: an adjusting mechanism (50), the first clamp (32) and the second clamp (42) are arranged on the adjusting mechanism (50), the adjusting mechanism (50) is configured to adjust the relative position of the first clamp (32) and the second clamp (42) in the axial direction of the first pipe (30) and the second pipe (40), and the adjusting mechanism (50) comprises: a mounting table (51); a lead screw (52) rotatably arranged on the mounting table (51), the lead screw (52) comprising a first threaded section (521) and a second threaded section (522) arranged in the axial direction of the lead screw (52) and having opposite rotation directions, a first connecting block (53) and a second connecting block (54), the first connecting block (53) and the second connecting block (54) are slidably arranged on the mounting table (51) along the length direction of the lead screw (52) and are sleeved on the first threaded section (521) and the second threaded section (522) respectively, wherein the first connecting block (53) is fixed with the first clamp (32), and the second connecting block (54) is fixed with the second clamp (42).

10. A refrigerant system characterized by comprising: The valve assembly (100) according to any one of claims 1-9.

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