CN114992350A - Slider and have its switching-over valve - Google Patents

Abstract

The invention relates to the technical field of valves, in particular to a sliding block and a reversing valve with the sliding block. The invention provides a slide block of a reversing valve, which comprises a body part and a base, wherein the body part is fixedly connected with the base; the pressure relief channel is formed in the sliding block of the reversing valve, two ends of the pressure relief channel are located on the body portion and the base respectively, and the refrigerant located on the body portion can flow out towards the direction of the sliding block far away from the reversing valve through the pressure relief channel. The invention also provides a reversing valve which comprises a valve body, a valve seat and the sliding block of the reversing valve. Compared with the prior art, the invention has the advantages that: make the slider of switching-over valve at gliding in-process through setting up the pressure release passageway on the slider of switching-over valve, have that the refrigerant is quick to flow through the pressure release passageway, play the effect of pressure release, reduce the direct pressure impact that receives of slider of switching-over valve, and then reduce the frictional force of slider of switching-over valve to effectively reduce the noise that the friction produced.

Description

Slider and have its switching-over valve

Technical Field

The invention relates to the technical field of valves, in particular to a sliding block and a reversing valve with the sliding block.

Background

The reversing valve is an important part of the heat pump type air conditioner and comprises a solenoid coil, a pilot valve and a main valve. The reversing of the main valve is realized through the combined action of the electromagnetic coil and the pilot valve so as to switch the flowing direction of the refrigerant, thereby switching the air conditioner between the two working states of refrigeration and heating.

The slider of current switching-over valve can lateral sliding when refrigeration cycle and heating cycle switch over each other, and owing to the high-pressure gas effect, the slider of switching-over valve bears higher pressure this moment, uses and when carrying out the switching-over of switching-over valve with the valve seat surface cooperation, and the slider of switching-over valve and the vibration that the valve seat surface produced because the great friction of pressure can cause the noise, and in certain vibration frequency range, the human ear can hear this kind of vibration noise, arouses that the comfort level is bad.

Disclosure of Invention

In view of the above, the present invention provides a slider of a directional control valve capable of quickly releasing pressure and reducing friction.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention provides a slider of a reversing valve, which comprises a body part and a base, wherein the body part is fixedly connected with the base, and a refrigerant flows through the top of the slider of the reversing valve; a pressure relief channel is formed in the slider of the reversing valve, two ends of the pressure relief channel are located on the body portion and the base respectively, and refrigerant located on the body portion can flow out towards the direction far away from the slider of the reversing valve through the pressure relief channel.

It can be understood that this application makes through setting up on the slider of switching-over valve the pressure release passageway makes the slider of switching-over valve is at gliding in-process, has the quick passing through of refrigerant the pressure release passageway flows, plays the effect of pressure release, reduces the direct pressure impact that receives of slider of switching-over valve, and then reduces the frictional force of slider of switching-over valve to effectively reduce the noise that friction produced.

In one embodiment, the body part is internally provided with a communication cavity with one open end, the shortest distance from the inner wall of the communication cavity to the bottom wall surface of the pressure relief channel is D, and D is 2.2mm-2.7 mm.

It can be understood that if the shortest distance D from the inner wall of the communication cavity to the bottom wall surface of the pressure relief channel is less than 2.2mm, the slider of the reversing valve cannot be normally reversed, so that normal work is influenced; if the shortest distance D from the inner wall of the communication cavity to the bottom wall surface of the pressure relief channel is larger than 2.7mm, the pressure relief is insufficient, and the effect of pressure relief cannot be achieved.

In one embodiment, the slider of the reversing valve is further provided with a step, the step is arranged between the body part and the base and arranged around the body part in a circle, and the pressure relief channel is simultaneously located on the body part, the step and the base.

It can be understood that the step is arranged to be equivalent to the thickened body part, so as to improve the strength of the body part, meanwhile, the guide frame acts the thrust on the step, the action area of the guide frame and the slide block of the reversing valve is enlarged, and the slide block can be effectively pushed.

In one embodiment, the two ends of the slider of the reversing valve are both provided with the pressure relief channels, each pressure relief channel comprises a first channel, a second channel and a third channel, the first channel is arranged on the body part, the second channel is arranged on the step, the third channel is arranged on the base, and the two ends of the second channel are respectively communicated with the first channel and the third channel.

In one embodiment, the first channel and the second channel are both arc surfaces recessed towards the inside of the body portion, and the third channel is recessed and disposed on one side surface of the base close to the body portion.

In one embodiment, the base is further provided with a fourth channel, the fourth channel is communicated with the third channel, the fourth channel is arc-shaped, and an opening of the fourth channel is parallel to the movement direction of the sliding block of the reversing valve.

It will be appreciated that the rate of refrigerant pressure relief is further enhanced.

The invention also provides the following technical scheme:

the reversing valve comprises a valve body, a valve seat and a sliding block of the reversing valve, wherein a valve cavity is formed in the valve body, the valve seat is fixedly arranged in the valve cavity, and the sliding block of the reversing valve is arranged in the valve cavity and can slide on the valve seat.

It will be appreciated that the slider of the diverter valve is slidable on the valve seat for the purpose of diverting.

In one embodiment, the reversing valve further comprises a piston and a guide frame, the piston and the guide frame are both located in the valve cavity, a step is arranged on a sliding block of the reversing valve, the guide frame is sleeved on the step and connected with the sliding block of the reversing valve, and two ends of the guide frame are both connected to the piston.

It can be understood that the movement of the piston in the valve cavity drives the guide frame to move, and the guide frame drives the slide block of the reversing valve to move on the valve seat, so that the reversing of the reversing valve is realized.

In one embodiment, a plurality of through holes are formed in the valve seat along the thickness direction of the valve seat, a communication cavity with one open end is formed in the slider of the reversing valve, and the communication cavity can be used for randomly communicating two adjacent through holes.

It will be appreciated that reversal of the direction valve is achieved.

In one embodiment, the valve body is provided with a plurality of mounting holes, the reversing valve further comprises a plurality of connecting pipes, and the connecting pipes are correspondingly mounted in the mounting holes one by one.

It will be appreciated that fluid is caused to enter the valve chamber through the nipple or to exit the valve chamber.

Compared with the prior art, the pressure relief channel is arranged on the sliding block of the reversing valve, so that refrigerant can quickly flow out through the pressure relief channel in the sliding process of the sliding block of the reversing valve, the pressure relief effect is realized, the pressure impact directly borne by the sliding block of the reversing valve is reduced, the friction force of the sliding block of the reversing valve is further reduced, and the noise generated by friction is effectively reduced.

Drawings

FIG. 1 is a schematic structural view of a slider of a reversing valve provided by the present invention;

FIG. 2 is a schematic view of the original structure of a slider of the reversing valve;

FIG. 3 is a graph comparing the original structure of the slider of the reversing valve with the structure of the present application for force analysis;

fig. 4 is a schematic structural diagram of the reversing valve provided by the invention.

The symbols in the drawings represent the following meanings:

100. a slider of the diverter valve; 10. a body portion; 11. a communicating cavity; 20. a base; 21. a fourth channel;

30. a step; 40. a pressure relief channel; 41. a first channel; 42. a second channel; 43. a third channel;

101. a diverter valve; 50. a valve body; 51. a valve cavity; 52. mounting holes; 521. a first mounting hole; 522. a second mounting hole; 523. a third mounting hole; 524. a fourth mounting hole; 53. taking over a pipe; 531. a first adapter tube; 532. a second adapter tube; 533. a third connection pipe; 534. a fourth connecting pipe; 60. a valve seat; 61. a flow-through hole; 611. a first flow through hole; 612. a second flow through hole; 613. a third flow-through hole; 70. a piston; 80. a guide frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, the present invention provides a slider 100 of a direction valve, the slider 100 of the direction valve is applied to a direction valve 101, and the direction of the direction valve 101 is switched by sliding the slider 100 of the direction valve, so as to switch the flow direction of a refrigerant, thereby switching the air conditioner between two working states of cooling and heating.

Specifically, the slider 100 of the reversing valve provided by the invention comprises a body part 10 and a base 20, wherein the body part 10 is fixedly connected with the base 20, and a refrigerant flows through the top of the slider 100 of the reversing valve; the slider 100 of the reversing valve is provided with a pressure relief channel 40, two ends of the pressure relief channel 40 are respectively located on the body portion 10 and the base 20, and the refrigerant located on the body portion 10 can flow out towards the direction away from the slider 100 of the reversing valve through the pressure relief channel 40.

It should be noted that, the slider 100 'of the conventional reversing valve may slide laterally when the refrigeration cycle and the heating cycle are switched, at this time, the slider 100' of the reversing valve is subjected to a high pressure due to the action of the high-pressure gas, when the slider 100 'is used in cooperation with the valve seat surface and the reversing valve is reversed, the vibration generated by the slider 100' of the reversing valve and the valve seat surface due to the large friction of the pressure may cause noise, and in a certain vibration frequency range, human ears may hear the vibration noise, which may cause poor comfort. In the embodiment, the pressure relief channel 40 is arranged on the slider 100 of the reversing valve, so that refrigerant can rapidly flow out through the pressure relief channel 40 in the sliding process of the slider 100 of the reversing valve, the pressure relief effect is achieved, the pressure impact directly borne by the slider 100 of the reversing valve is reduced, the friction force of the slider 100 of the reversing valve is further reduced, and the noise generated by friction is effectively reduced.

Preferably, in the present embodiment, the main body 10 is an integrally formed structure, and is made of a polymer material with low heat transfer efficiency, such as polyphenylene sulfide or nylon, and the like, and by setting the main body, the heat transfer efficiency of the air conditioning system where the reversing valve 101 is located from the high pressure side to the low pressure side can be effectively reduced, and the energy efficiency of the air conditioning system can be effectively improved. Of course, in other embodiments, the body portion 10 may be made of other types of materials, which are not limited herein.

In this embodiment, the pressure relief channel 40 may be formed by directly milling the surface of the slider 100 of the direction valve or directly molding the pressure relief channel by using a mold, and the specific processing method of the pressure relief channel 40 is not limited herein.

As shown in fig. 1, the slider 100 of the direction valve is further provided with a step 30, the step 30 is disposed between the body 10 and the base 20 and is circumferentially arranged around the body 10, and the step 30 is disposed to correspond to the body 10 with a thicker thickness, so as to improve the strength of the body 10.

Specifically, the pressure relief channel 40 is located on the main body 10, the step 30 and the base 20 at the same time, that is, the pressure relief channel 40 adopts a top-down design, and plays a role in guiding the refrigerant located on the main body 10, so that the refrigerant on the main body 10 can flow from the main body 10 to the step 30 through the pressure relief channel 40, then flow from the step 30 to the base 20, and further flow out toward the direction away from the slider 100 of the reversing valve, thereby achieving the purpose of rapid pressure relief.

As shown in fig. 2 and fig. 3, in order to further explain the effect of the pressure relief channel 40, which enables the slider 100 of the reversing valve to reduce the pressure, the original structure of the slider 100 of the reversing valve and the structure of the present application are compared and tested, and the stress curves of the two during normal sliding and reversing are drawn, and the result shows that the structure of the present application is obviously reduced compared with the stress of the original structure.

Further, the main body 10 has a communication cavity 11 with an open end, and the shortest distance from the inner wall of the communication cavity 11 to the bottom wall of the pressure relief channel 40 is D, and D is 2.2mm-2.7 mm; if the shortest distance D from the inner wall of the communicating cavity 11 to the wall surface of the pressure relief channel 40 is less than 2.2mm, that is, the pressure relief channel 40 is cut too much on the slider 100 of the reversing valve, the refrigerant on the body 10 leaks too much, the high-pressure medium flowing in through the first connecting pipe 531 leaks too much, the reversing pressure of the slider 100 of the reversing valve is insufficient, and finally the slider 100 of the reversing valve cannot be normally reversed, thereby affecting the normal reversing operation of the reversing valve 101; if the shortest distance D between the inner wall of the communication chamber 11 and the bottom wall surface of the relief passage 40 is greater than 2.7mm, the amount of leakage of the refrigerant in the main body 10 is insufficient, and the relief effect is not obtained.

Preferably, the two ends of the slider 100 of the reversing valve are both provided with the pressure relief channels 40, so that the refrigerant can flow out along the pressure relief channels 40 at the two ends for pressure relief, and the pressure relief effect is further enhanced; of course, in other embodiments, the number of pressure relief passages 40 may be 3, 4, 5 or even more, and is not limited herein.

Further, the pressure relief channel 40 includes a first channel 41, a second channel 42 and a third channel 43, the first channel 41 is disposed on the main body 10, the second channel 42 is disposed on the step 30, the third channel 43 is disposed on the base 20, two ends of the second channel 42 are respectively communicated with the first channel 41 and the third channel 43, wherein the first channel 41 and the second channel 42 are both arc surfaces recessed toward the inside of the main body 10, the third channel 43 is recessed and disposed on a side surface of the base 20 close to the main body 10, the recessed arc surface is designed to increase the circulation speed of the refrigerant to a certain extent, and the pressure relief effect is further enhanced.

It should be noted that, in other embodiments, the pressure relief channel 40 is not limited to the concave arc surface design, and may also be a slope surface. In this embodiment, the width of the second channel 42 is larger than that of the first channel 41, and in other embodiments, the second channel 42 may also be a gap with a width smaller than that of the first channel, as long as the first channel 41 and the third channel 43 can be ensured to communicate with each other.

Furthermore, the base 20 is further provided with a fourth channel 21, the fourth channel 21 is communicated with the third channel 43, the fourth channel 21 is arc-shaped, the opening of the fourth channel 21 is parallel to the moving direction of the slider 100 of the reversing valve, when the refrigerant flows through the third channel 43, the recessed arrangement of the fourth channel 21 can further guide the refrigerant to flow out of the slider 100 of the reversing valve through the fourth channel 21, and thus, the pressure relief rate of the refrigerant is further enhanced.

Preferably, the fourth channels 21 are formed at both ends of the base 20, so that the pressure relief effect is further enhanced; of course, in other embodiments, the number of the fourth channels 21 may also be 3, 4, 5 or even more, which is not limited herein.

As shown in fig. 4, the present invention further provides a reversing valve 101, wherein the reversing valve 101 includes a valve body 50, a valve seat 60 and a slider 100 of the reversing valve, the valve body 50 has a valve cavity 51 therein, the valve seat 60 is fixedly disposed in the valve cavity 51, the slider 100 of the reversing valve is disposed in the valve cavity 51 and can slide on the valve seat 60, and the slider 100 of the reversing valve can slide on the valve seat 60 to achieve the purpose of reversing.

Specifically, along the thickness direction of the valve seat 60, a plurality of flow holes 61 are formed in the valve seat 60 in a penetrating manner, a communication cavity 11 with one end open is formed inside the slider 100 of the reversing valve, and the communication cavity 11 can be arbitrarily communicated with two adjacent flow holes 61, so that the reversing of the reversing valve 101 is realized.

Specifically, the valve body 50 is provided with a plurality of mounting holes 52, the reversing valve 101 further comprises a plurality of connecting pipes 53, and the plurality of connecting pipes 53 are correspondingly mounted in the mounting holes 52 one by one, so that the fluid enters the valve cavity 51 or flows out of the valve cavity 51 through the connecting pipes 53.

It should be noted that, in the present embodiment, the valve seat 60 is provided with a first flow through hole 611, a second flow through hole 612 and a third flow through hole 613, the valve body 50 is provided with a first mounting hole 521, a second mounting hole 522, a third mounting hole 523 and a fourth mounting hole 524, and the first mounting hole 521, the second mounting hole 522, the third mounting hole 523 and the fourth mounting hole 524 are respectively provided with a first connecting pipe 531, a second connecting pipe 532, a third connecting pipe 533 and a fourth connecting pipe 534, and are all communicated with the valve cavity 51; the first, second, and third flow holes 611, 612, and 613 correspond to the second, third, and fourth mounting holes 522, 523, and 524, respectively, and the first mounting hole 521 is disposed opposite to the second, third, and fourth mounting holes 522, 523, and 524.

Further, the reversing valve 101 further comprises a piston 70 and a guide frame 80, the piston 70 and the guide frame 80 are both located in the valve cavity 51, the guide frame 80 is sleeved on the step 30 and connected with a sliding block 100 of the reversing valve, the piston 70 is connected to two ends of the guide frame 80, the guide frame 80 is driven to move by the movement of the piston 70 in the valve cavity 51, and then the sliding block 100 of the reversing valve is driven to move on the valve seat 60 by the guide frame 80, so that the reversing of the reversing valve 101 is realized.

The directional valve 101 further comprises a pilot valve (not shown) disposed on the valve body 50 for driving the slider 100 of the directional valve to move on the valve seat 60. The valve body 50 has end caps (not shown) at opposite ends thereof, one of the end caps forming a first end cap cavity (not shown) with one of the pistons 70 and the other end cap forming a second end cap cavity (not shown) with the other piston 70. The pilot valve is provided with a first capillary (not shown), a second capillary (not shown), a third capillary (not shown) and a fourth capillary (not shown), the first capillary is communicated with the first connecting pipe 531, the second capillary is communicated with the first end cover cavity, the third capillary is communicated with the third connecting pipe 533, and the fourth capillary is communicated with the second end cover cavity. When the refrigeration system is in a heating mode and needs to be switched, the pilot valve is switched to enable the first capillary tube to be communicated with the fourth capillary tube, the high-pressure medium enters the fourth capillary tube from the first capillary tube and then enters the second end cover cavity to push the other piston 70, so that the sliding block 100 of the reversing valve slides, at the moment, the fourth connecting tube 534 is communicated with the first connecting tube 531, and the third connecting tube 533 is communicated with the second connecting tube 532, so that reversing is achieved.

The diverter valve 101 also has the advantages of the diverter valve slider 100 described above.

In the working process of the reversing valve 101, the slider 100 of the reversing valve slides on the valve seat 60 in the valve body 50 to reverse the reversing valve 101, when refrigerant flows into the valve cavity 51 through the first connecting pipe 531 and impacts the body part 10, the refrigerant can rapidly flow out of the slider 100 of the reversing valve through the guidance of the pressure relief channel 40, and then flows out of the valve cavity 51 through any one connecting pipe 53 of the second connecting pipe 532, the third connecting pipe 533 and the fourth connecting pipe 534, so that the body part 10 cannot accumulate too much refrigerant to cause the slider 100 of the reversing valve to be stressed too much, thereby reducing the friction coefficient between the slider 100 of the reversing valve and the valve seat 60, further reducing the friction force of the slider 100 of the reversing valve, and effectively reducing noise generated by friction.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The slider of the reversing valve comprises a body part (10) and a base (20), wherein the body part (10) is fixedly connected with the base (20), and a refrigerant flows through the top of the slider of the reversing valve;

the reversing valve is characterized in that a pressure relief channel (40) is formed in a sliding block of the reversing valve, two ends of the pressure relief channel (40) are respectively located on the body portion (10) and the base (20), and refrigerant located on the body portion (10) can flow out towards the direction far away from the sliding block of the reversing valve through the pressure relief channel (40).

2. The slider of the reversing valve according to claim 1, wherein the body portion (10) has a communicating cavity (11) with an open end, the shortest distance from the inner wall of the communicating cavity (11) to the bottom wall of the pressure relief channel (40) is D, and D is 2.2mm-2.7 mm.

3. The slider of a reversing valve according to claim 1, further comprising a step (30), wherein the step (30) is disposed between the body portion (10) and the base (20) and circumferentially arranged around the body portion (10), and the pressure relief channel (40) is simultaneously located on the body portion (10), the step (30) and the base (20).

4. The slider of the reversing valve according to claim 3, wherein the pressure relief channel (40) is formed at each of two ends of the slider, the pressure relief channel (40) comprises a first channel (41), a second channel (42) and a third channel (43), the first channel (41) is formed on the body portion (10), the second channel (42) is formed on the step (30), the third channel (43) is formed on the base (20), and two ends of the second channel (42) are respectively communicated with the first channel (41) and the third channel (43).

5. A slider for a reversing valve according to claim 4, characterised in that the first channel (41) and the second channel (42) are both circular arcs that are recessed towards the inside of the body (10), and the third channel (43) is recessed on a side of the base (20) close to the body (10).

6. The slider of the reversing valve according to claim 4, characterized in that a fourth channel (21) is further formed on the base (20), the fourth channel (21) is communicated with the third channel (43), the fourth channel (21) is arc-shaped, and the opening of the fourth channel is parallel to the moving direction of the slider of the reversing valve.

7. A reversing valve, characterized by comprising a valve body (50), a valve seat (60) and a slide block of the reversing valve according to any one of claims 1 to 6, wherein the valve body (50) is internally provided with a valve cavity (51), the valve seat (60) is fixedly arranged in the valve cavity (51), and the slide block of the reversing valve is arranged in the valve cavity (51) and can slide on the valve seat (60).

8. The reversing valve according to claim 7, further comprising a piston (70) and a guide frame (80), wherein the piston (70) and the guide frame (80) are both located in the valve cavity (51), a step (30) is provided on a sliding block of the reversing valve, the guide frame (80) is sleeved on the step (30) and connected with the sliding block of the reversing valve, and both ends of the guide frame (80) are connected to the piston (70).

9. A direction change valve according to claim 7, wherein a plurality of flow holes (61) are formed in the valve seat (60) along the thickness direction of the valve seat (60), a communication chamber (11) having an open end is formed in the slider of the direction change valve, and the communication chamber (11) can arbitrarily communicate two adjacent flow holes (61).

10. The reversing valve according to claim 9, wherein a plurality of mounting holes (52) are formed in the valve body (50), the reversing valve further comprises a plurality of connecting pipes (53), and the connecting pipes (53) are correspondingly mounted in the mounting holes (52).

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