CN218894994U - One-way air inlet valve and compressor - Google Patents
One-way air inlet valve and compressor Download PDFInfo
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- CN218894994U CN218894994U CN202223256857.9U CN202223256857U CN218894994U CN 218894994 U CN218894994 U CN 218894994U CN 202223256857 U CN202223256857 U CN 202223256857U CN 218894994 U CN218894994 U CN 218894994U
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- 230000009471 action Effects 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007906 compression Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 230000001502 supplementing effect Effects 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of mechanical valves, and provides a one-way air inlet valve and a compressor, wherein the one-way air inlet valve comprises: valve seat, valve cover, sliding valve body and valve core; the valve seat and the valve cover jointly define a valve body cavity, and the sliding valve body and the valve core are movably arranged in the valve body cavity; the valve seat is sleeved with the sliding valve body to form a first cavity and a second cavity, and the valve core is arranged in the second cavity; the valve seat is provided with a first air hole which is communicated with the first cavity; under the action of the first air source, the sliding valve body can move along the valve seat so as to switch the valve core between a fixed state and a movable state; the valve cover is provided with a second air hole; the sliding valve body is provided with a first air passage, one end of the first air passage is selectively communicated with the second cavity, and the other end of the first air passage is selectively communicated with the second air hole; the valve seat is provided with an air outlet channel which is selectively communicated with the second cavity. The utility model can realize the unidirectional air intake of the unidirectional air intake valve under certain conditions.
Description
Technical Field
The utility model relates to the technical field of mechanical valves, in particular to a one-way air inlet valve and a compressor.
Background
In the technical field of refrigeration/heat pump, the injection air supplement of a compressor is one of the main means for solving the problems of small heating capacity and low heating energy efficiency of a vapor compression refrigeration system under the condition of low ambient temperature.
In the field of small refrigeration, a piston compressor is one of the most common compressor structures, but due to the structural specificity, a unit compression period is provided with only one working space, and the piston compressor realizes injection air supplement by arranging injection air supplement holes in the cylinder wall and arranging an air inlet valve, but due to the fact that compression, exhaust, expansion and air suction of the piston compressor all occur in the same physical space, the air suction amount is reduced, so that the injection air supplement process is far away from a secondary compression process, and the energy recovery is not facilitated.
The adoption of a high-speed electromagnetic valve is one of methods for solving the problem, but the reliability of an electromagnetic system is poor under high-speed operation, and the matching between the opening and closing of a valve and the movement phase of a piston is ensured, so that a certain difficulty is brought to practical application (especially a free piston type linear compressor).
In summary, the existing one-way intake valve cannot meet the use requirements in a piston compressor, and needs to be improved.
Disclosure of Invention
The utility model provides a one-way air inlet valve and a compressor, which are used for solving the problem that the prior one-way air inlet valve cannot meet the use requirement of the compressor.
The present utility model provides a one-way intake valve comprising: valve seat, valve cover, sliding valve body and valve core; the valve seat and the valve cover jointly define a valve body cavity, and the sliding valve body and the valve core are movably arranged in the valve body cavity; the valve seat is sleeved with the sliding valve body to form a first cavity and a second cavity, and the valve core is arranged in the second cavity; the valve seat is provided with a first air hole which is communicated with the first cavity and is used for being communicated with a first air source; under the action of the first air source, the sliding valve body can move along the valve seat so as to switch the valve core between a fixed state and a movable state; the valve cover is provided with a second air hole which is used for being communicated with a second air source; the sliding valve body is provided with a first air passage, one end of the first air passage is selectively communicated with the second cavity, and the other end of the first air passage is selectively communicated with the second air hole; the valve seat is provided with an air outlet channel, the air outlet channel is used for being connected with a target container, and the air outlet channel is selectively communicated with the second cavity.
According to the one-way air inlet valve provided by the utility model, the bottom of the inner cavity of the valve seat is provided with the guide rail sliding sleeve, the bottom of the sliding valve body facing the valve seat is provided with the guide rail groove, and the guide rail groove is sleeved with the guide rail sliding sleeve; under the action of the first air source, the sliding valve body can move along the guide rail sliding sleeve.
According to the one-way air inlet valve provided by the utility model, the sliding valve body further comprises a first spring; one end of the first spring is connected with the bottom surface of the inner cavity of the valve cover, and the other end of the first spring is connected with the top end of the sliding valve body.
According to the one-way air inlet valve provided by the utility model, the sliding valve body is provided with the conical groove towards the bottom of the valve seat, and the conical groove is communicated with the first air channel; the valve core is provided with a conical surface towards the top of the sliding valve body, the conical surface has the same inclination angle with the groove wall of the conical groove, and the conical surface is selectively contacted with the groove wall of the conical groove.
According to the one-way air inlet valve provided by the utility model, the valve core comprises a shell, a sealing ring and a second spring, wherein the second spring is arranged in the inner cavity of the shell, and two ends of the second spring are respectively connected with the bottom surfaces of the inner cavities of the shell and the valve seat; the conical surface is arranged at the top end of the shell, an annular groove is formed in the conical surface, and the sealing ring is arranged in the annular groove; the seal ring is abutted with the groove wall of the conical groove under the condition that the conical surface is contacted with the groove wall of the conical groove.
According to the one-way air inlet valve provided by the utility model, the bottom of the inner cavity of the valve seat is provided with the first boss, and the first boss extends around the central shaft of the valve seat to form the first annular boss; the shell is arranged between the first annular boss and the guide rail sliding sleeve, and the second spring is arranged between the shell and the first annular boss.
According to the one-way air inlet valve provided by the utility model, the valve core is provided with the air inlet hole, the air inlet hole is communicated with the air outlet channel, and the air inlet hole is selectively communicated with the first air channel.
According to the one-way air inlet valve provided by the utility model, the top surface of the inner cavity of the valve cover is provided with the limit lug, and the limit lug protrudes out of the top surface of the inner cavity of the valve cover and extends towards the valve seat; and under the condition that the top surface of the sliding valve body is contacted with the bottom surface of the limiting lug, the first air passage is communicated with the second air hole in a centering way.
According to the one-way air inlet valve provided by the utility model, the limiting lug extends around the central shaft of the valve cover to form a second annular boss; the top end of the sliding valve body is provided with a second boss, the second annular boss and the sliding valve body are coaxially arranged, and the outer diameter of the second boss is smaller than that of the sliding valve body; one end of the first spring is connected with the bottom surface of the valve cover and sleeved on the second annular boss; the other end of the first spring is connected with the top end of the sliding valve body and sleeved on the second boss.
The present utility model also provides a compressor comprising: a one-way intake valve as claimed in any one of the preceding claims.
According to the unidirectional air inlet valve and the compressor, the sliding valve body is arranged and sleeved with the valve seat to form the first cavity, the first cavity is communicated with the first air source, and the sliding valve body can move up and down under the action of the first air source, so that after the pressure of the first air source reaches a certain value, the sealing and the conduction of the unidirectional air inlet valve can be controlled by the second air source, unidirectional air supplementing and air inlet of the unidirectional air inlet valve in the compression process of the compressor are realized, the air suction process of the compressor is not influenced, and the air pumping capacity of the compressor under the condition of low ambient temperature is improved.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a unidirectional intake valve in a unidirectional intake operating state according to some embodiments of the present utility model;
FIG. 2 is a second schematic diagram of a unidirectional intake valve according to some embodiments of the present utility model;
fig. 3 is a schematic structural view of a sealing state of a unidirectional intake valve according to some embodiments of the present utility model.
Reference numerals:
110: a valve seat; 111: a first air hole; 112: an air outlet channel; 113: a guide rail sliding sleeve; 114: a first boss; 120: a valve cover; 121: a second air hole; 122: a limit bump; 130: sliding the valve body; 131: a first airway; 132: a guide rail groove; 133: a first spring; 134: a conical groove; 135: a second boss; 140: a valve core; 141: a conical surface; 142: a housing; 143: a seal ring; 144: a second spring; 145: an air inlet hole; 150: a first cavity; 160: and a second cavity.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
When the existing piston compressor works, after the piston retreats and the expansion stroke is finished, the pressure in the compression cavity is lower than the external back pressure, the air inlet valve is in a sealed state, and the air supplementing cannot enter the compression cavity; and because the compression, the exhaust, the expansion and the air suction of the piston compressor all occur in the same physical space, the air suction amount of the compressor is reduced, so that the injection air supplementing process is far away from the secondary compression process, and the recovery of energy is not facilitated.
In this regard, the utility model provides a one-way air inlet valve and a compressor, which are used for solving the problems that the existing one-way air inlet valve cannot meet the use requirement and the injection air supplementing problem of a piston compressor cannot be solved.
The one-way intake valve of the present utility model is described below with reference to fig. 1-3.
It should be noted that the application scenario of the unidirectional air inlet valve provided by the utility model is not limited to solving the injection air supplementing problem of the piston compressor, and can be used as a unidirectional air inlet valve driven by an air source in other processes using pipeline valves in refrigeration, chemical industry and the like.
As shown in fig. 1 to 3, the unidirectional air intake valve provided by the present utility model includes: valve seat 110, valve cover 120, sliding valve body 130, and valve element 140.
Wherein, under the combined action of the first air source and the back pressure applied to the sliding valve body 130, the sliding valve body 130 can move up and down along the extending direction of the valve seat 110.
As shown in fig. 2, when the pressure Pc of the first air source is greater than the back pressure Pb of the sliding valve body 130, the sliding valve body 130 moves to the uppermost position under the pressure difference between the pressure Pc of the first air source and the back pressure Pb of the sliding valve body 130, the first air passage 131 communicates with the second air hole 121, the second air source directly acts on the valve body 140, and the valve body 140 may be in an active state under the action of the second air source.
In the case that the pressure Pi of the second air source is lower than the pressure Pd in the compression chamber of the compressor, the bottom end of the sliding valve body 130 contacts with the top end of the valve core 140 to form a sealing surface; in case that the pressure Pi of the second air source is greater than the pressure Pd in the compression chamber of the compressor, the valve body 140 moves downward, thereby forming a second air passage between the valve body 140 and the sliding valve body 130, the second air passage communicating with the air outlet passage 112, and thus one-way air intake of the one-way air intake valve under certain conditions can be achieved.
The second air passage is located in the second cavity 160, and is defined by the bottom surface of the sliding valve body 130, the top surface of the valve core 140, and the valve seat 110.
As shown in fig. 3, in the state where there is no first air source, the sliding valve body 130 is at the lowest end position, the valve element 140 is in a fixed state, the bottom end of the sliding valve body 130 contacts with the top end of the valve element 140 to form a sealing surface, and the one-way air inlet valve is in a sealed state.
In the working state of the unidirectional air inlet valve, when the pressure Pc of the first air source is smaller than or equal to the back pressure Pb of the sliding valve body 130, the sliding valve body 130 does not move, the sliding valve body 130 is still at the lowest position, and the unidirectional air inlet valve is in a sealing state.
According to the unidirectional air inlet valve provided by the utility model, the sliding valve body 130 is arranged, the sliding valve body 130 is sleeved with the valve seat 110 to form the first cavity 150, the first cavity 150 is communicated with the first air source, and the sliding valve body 130 can move up and down under the action of the first air source, so that after the pressure of the first air source reaches a certain value, the sealing and conduction of the unidirectional air inlet valve can be controlled by the second air source, the unidirectional air supplementing and inlet of the unidirectional air inlet valve in the compression process of the compressor is realized, the air sucking process of the compressor is not influenced, and the air pumping capacity of the compressor under the condition of low ambient temperature is improved.
Wherein, the valve seat 110 and the valve cover 120 can be detachably connected, and the connection mode can be plug connection, sleeve connection, threaded connection and the like.
In some embodiments, valve seat 110 is in telescoping engagement with valve cover 120 to collectively define a valve body interior cavity.
Wherein, the top of the valve cover 120 is provided with an opening, and the back pressure Pb received by the unidirectional air inlet valve directly acts on the top end of the sliding valve body 130 through the opening of the valve cover 120.
The valve seat 110 and the sliding valve body 130 are sleeved to form a first cavity 150 and a second cavity 160, the first air source directly acts on the bottom surface of the sliding valve body 130 through the first cavity 150, and the volume of the second cavity 160 changes along with the movement of the sliding valve body 130.
In the case where the sliding valve body 130 moves upward along the valve seat 110, the volume of the second chamber 160 becomes large, the valve body 140 has a movable space, the valve body 140 is in a movable state, and the valve body 140 can move up and down along the valve seat 110; with the sliding valve body 130 at the lowermost position, the volume of the second chamber 160 is equal to the volume of the valve body 140, and the valve body 140 is in a fixed state.
Under the condition that the valve element 140 is in a fixed state, the top surface of the valve element 140 is in contact with the bottom surface of the sliding valve body 130, the bottom surface of the valve element 140 is in contact with the bottom surface of the inner cavity of the valve seat 110, the valve element 140 has no moving space, and the valve element 140 cannot move.
Wherein, the communication state between the two ends of the first air channel 131 and the second air hole 121, the second cavity 160 changes along with the position change of the sliding valve body 130; under the condition that the sliding valve body 130 is positioned at the lowest end, the first air passage 131 is disconnected from the second air hole 121 and the second cavity 160, and the first air passage 131 is communicated with the second cavity 160 in the process of upward movement of the sliding valve body 130; under the condition that the sliding valve body 130 moves up to a certain height, the first air passage 131 is communicated with the second air hole 121, and the second air source sequentially acts on the top of the valve core 140 through the second air hole 121, the first air passage 131 and the second air passage.
The target container may be a container or a pipe containing gas or liquid.
Wherein, in the case where the sliding valve body 130 is located at the lowermost position, the air outlet passage 112 is not communicated with the second chamber 160, and in the case where the sliding valve body 130 is moved up to the state where the bottom surface of the sliding valve body 130 is separated from the top surface of the valve body 140, the air outlet passage 112 is communicated with the second chamber 160.
In some embodiments, the bottom of the inner cavity of the valve seat 110 is provided with a guide rail sliding sleeve 113, the bottom of the sliding valve body 130 facing the valve seat 110 is provided with a guide rail groove 132, and the guide rail groove 132 is sleeved with the guide rail sliding sleeve 113; the sliding valve body 130 is movable along the guide sliding sleeve 113 under the action of the first air source.
In the present embodiment, the guide sliding sleeve 113 cooperates with the guide groove 132 to define a moving path of the sliding valve body 130.
Further, the sliding valve body 130 further includes a first spring 133; one end of the first spring 133 is connected to the bottom surface of the inner cavity of the cap 120, and the other end is connected to the top end of the sliding valve body 130, for moving and resetting the sliding valve body 130.
In the case where the pressure Pc of the first air source is greater than the sum of the back pressure Pb, the elastic force of the first spring 133, and the self gravity of the sliding valve body 130, the sliding valve body 130 can move upward along the guide sliding sleeve 113; in the case where the pressure Pc of the first air source is less than the sum of the back pressure Pb, the elastic force of the first spring 133, and the self gravity of the sliding valve body 130, the sliding valve body 130 moves downward along the guide sliding sleeve 113.
Further, the sliding valve body 130 is provided with a tapered groove 134 toward the bottom of the valve seat 110, and the tapered groove 134 is communicated with the first air passage 131; the valve core 140 is provided with a tapered surface 141 toward the top of the sliding valve body 130, and the tapered surface 141 has the same inclination angle as the groove wall of the tapered groove 134.
In this embodiment, by setting the opposite surfaces of the sliding valve body 130 and the valve element 140 to have inclined surfaces with inclination angles, the contact area between the sliding valve body 130 and the valve element 140 is increased, the sealing effect is increased, the length of the second air passage is increased, the area of the second air source acting on the valve element 140 is increased, and the reliability of the unidirectional air inlet valve is improved.
Wherein the tapered surface 141 is selectively contacted with the groove wall of the tapered groove 134, and the tapered surface 141 is contacted with the groove wall of the tapered groove 134 in the case that the sliding valve body 130 is positioned at the lowermost position, and the tapered surface 141 is contacted with or separated from the groove wall of the tapered groove 134 by the air pressure received by the valve body 140 in the case that the sliding valve body 130 is moved upward.
Further, the valve core 140 includes a housing 142, a sealing ring 143, and a second spring 144, where the second spring 144 is disposed in an inner cavity of the housing 142, and two ends of the second spring 144 are respectively connected with the housing 142 and a bottom surface of the inner cavity of the valve seat 110; the conical surface 141 is arranged at the top end of the shell 142, an annular groove is arranged on the conical surface 141, and the sealing ring 143 is arranged in the annular groove; when the tapered surface 141 contacts the groove wall of the tapered groove 134, the seal 143 abuts the groove wall of the tapered groove 134.
Wherein, the outer wall of the shell 142 is in sliding contact with the inner cavity wall surface of the guide rail sliding sleeve 113, and the top end of the shell 142 is selectively contacted with the bottom surface of the sliding valve body 130.
In this embodiment, the sealing performance of the unidirectional air intake valve is increased by providing the sealing ring 143, and the valve element 140 can be movably reset in the active state by providing the second spring 144.
Further, a first boss 114 is arranged at the bottom of the inner cavity of the valve seat 110, and the first boss 114 extends around the central axis of the valve seat 110 to form a first annular boss; the housing 142 is disposed between the first annular boss and the rail runner 113, and the second spring 144 is disposed between the housing 142 and the first annular boss.
In this embodiment, one end of the second spring 144 is connected to the top surface of the inner cavity of the housing 142, the other end of the second spring 144 is connected to the bottom of the inner cavity of the valve seat 110, and the second spring 144 is sleeved outside the first annular boss, so as to facilitate the installation of the second spring 144, and limit the rebound path of the second spring 144.
In some embodiments, the second spring 144 is detachably connected to the housing 142, the valve seat 110, and may be fastened, bolted, etc.
Further, the valve core 140 is provided with an air inlet hole 145, the air inlet hole 145 is communicated with the air outlet channel 112, and the air inlet hole 145 is selectively communicated with the first air channel 131.
In the present embodiment, by providing the air intake hole 145, the air flow passage as the second air source can be provided while reducing the air intake resistance.
In some embodiments, the plurality of air intake holes 145 may be a plurality of air intake holes 145 evenly distributed around the central axis of the valve body 140.
In some embodiments, the intake ports 145 may be various shapes, and the intake ports 145 are symmetrical with respect to a central axis of the valve body 140.
Wherein, in case that the top end of the valve body 140 is separated from the bottom surface of the sliding valve body 130, the second air hole 121, the first air passage 131, the second air passage, the air inlet hole 145, and the air outlet passage 112 are sequentially communicated; in the case where the tip end of the valve body 140 contacts the bottom surface of the sliding valve body 130, the first air passage 131 is not communicated with the air intake hole 145.
Further, a limiting bump 122 is disposed on the top surface of the inner cavity of the valve cover 120, and the limiting bump 122 protrudes from the top surface of the inner cavity of the valve cover 120 and extends towards the valve seat 110; the first air passage 131 is in centered communication with the second air hole 121 with the top surface of the sliding valve body 130 in contact with the bottom surface of the limit projection 122.
In the present embodiment, the limiting bump 122 plays a limiting role on the upward moving height of the sliding valve body 130, preventing the upward moving height of the sliding valve body 130 from being too high so as to disconnect the first air passage 131 from the second air hole 121, and ensuring the communication state between the first air passage 131 and the second air hole 121.
Further, the limiting bump 122 extends around the central axis of the valve cover 120 to form a second annular boss; the top end of the sliding valve body 130 is provided with a second boss 135, the second boss 135 is coaxially arranged with the second annular boss and the sliding valve body 130, and the outer diameter of the second boss 135 is smaller than the outer diameter of the sliding valve body 130; one end of the first spring 133 is connected with the bottom surface of the valve cover 120 and sleeved on the second annular boss; the other end of the first spring 133 is connected to the top end of the sliding valve body 130, and is sleeved on the second boss 135.
In this embodiment, by providing the second annular boss and the second boss 135, the installation of the first spring 133 is facilitated, and the moving path of the first spring 133 is restricted, so as to avoid the deformation of the first spring 133 in the rebound process.
In use, as shown in fig. 2, the first air source enters the first cavity 150 from the first air hole 111, when the pressure Pc of the first air source in the first cavity 150 received by the sliding valve body 130 is greater than the sum of the back pressure Pb received by the sliding valve body 130 and the elastic force of the first spring 133, the guide rail groove 132 of the sliding valve body 130 moves upward along the guide rail sliding sleeve 113 of the valve seat 110 and is limited by the limiting bump 122 of the valve cover 120, and at this time, the second air hole 121 of the valve cover 120 is communicated with the first air channel 131 of the sliding valve body 130.
At this time, the valve core 140 can move back and forth under the action of the first air source in the first air channel 131 and the air pressure in the air outlet channel 112 on the valve seat 110.
In the case where the pressure Pi of the second gas source flowing through the second gas hole 121, the first gas passage 131 in sequence is higher than the gas pressure Pc in the gas outlet passage 112 of the valve seat 110, the second spring 144 is compressed, and the valve body 140 moves downward and is restrained by the first annular boss of the valve seat 110.
An annular gas channel is formed between the top of the valve core 140 and the conical groove 134 of the sliding valve body 130, and the second gas source sequentially passes through the second gas hole 121, the first gas channel 131, the second gas channel, the gas inlet hole 145 and the gas outlet channel 112 to enter the target container.
As shown in fig. 3, when the pressure Pi of the second air source flowing through the second air hole 121 and the first air channel 131 sequentially is not higher than the air force Pd in the air outlet channel 112 of the valve seat 110, the valve core 140 forms a seal with the tapered groove 134 of the sliding valve body 130 and the sealing ring 143 under the elastic force of the second spring 144, and the second air source cannot enter the target container.
The first air source enters the first cavity 150 through the first air hole 111 on the valve seat 110, when the pressure Pc in the first cavity 150 received by the sliding valve body 130 is not greater than the sum of the back pressure Pb received by the sliding valve body 130 and the elastic force of the first spring 133, the guide rail groove 132 of the sliding valve body 130 moves downwards along the guide rail sliding sleeve 113 of the valve seat 110 and is limited by the guide rail sliding sleeve 113 of the valve seat 110, and the second air hole 121 on the valve cover 120 is not communicated with the first air passage 131 of the sliding valve body 130.
At this time, the valve body 140 is tightly engaged with the sliding valve body 130 and the valve seat 110, and cannot move up and down, and the tapered groove 134 of the sliding valve body 130 and the seal ring 143 form a seal, so that no matter how high the pressure Pc of the first air source is, the first air source cannot enter the target container.
According to the unidirectional air inlet valve provided by the utility model, the movable valve body and the valve core 140 are arranged, so that the unidirectional air inlet valve can be controlled to be sealed and conducted by the second air source after the pressure of the first air source reaches a certain value, unidirectional air supplementing and air inlet of the unidirectional air inlet valve in the compression process of the compressor are realized, the air suction process of the compressor is not influenced, and the air pumping capacity of the compressor under the condition of low ambient temperature is improved.
The utility model also provides a compressor comprising any one of the one-way air inlet valves.
According to the compressor provided by the utility model, the sealing and the conduction of the one-way air inlet valve can be controlled by the second air source after the pressure of the first air source reaches a certain value through the one-way air inlet valve, so that the one-way air supplementing and air inlet of the one-way air inlet valve in the compression process of the compressor are realized, the air suction process of the compressor is not influenced, and the air pumping capacity of the compressor under the condition of low ambient temperature is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A one-way intake valve, comprising: valve seat, valve cover, sliding valve body and valve core;
the valve seat and the valve cover jointly define a valve body cavity, and the sliding valve body and the valve core are movably arranged in the valve body cavity;
the valve seat is sleeved with the sliding valve body to form a first cavity and a second cavity, and the valve core is arranged in the second cavity;
the valve seat is provided with a first air hole which is communicated with the first cavity and is used for being communicated with a first air source; under the action of the first air source, the sliding valve body can move along the valve seat so as to switch the valve core between a fixed state and a movable state;
the valve cover is provided with a second air hole which is used for being communicated with a second air source; the sliding valve body is provided with a first air passage, one end of the first air passage is selectively communicated with the second cavity, and the other end of the first air passage is selectively communicated with the second air hole;
the valve seat is provided with an air outlet channel, the air outlet channel is used for being connected with a target container, and the air outlet channel is selectively communicated with the second cavity.
2. A one-way intake valve according to claim 1, characterized in that,
the bottom of the inner cavity of the valve seat is provided with a guide rail sliding sleeve, the bottom of the sliding valve body facing the valve seat is provided with a guide rail groove, and the guide rail groove is sleeved with the guide rail sliding sleeve;
under the action of the first air source, the sliding valve body can move along the guide rail sliding sleeve.
3. A one-way intake valve according to claim 2, wherein,
the sliding valve body further comprises a first spring;
one end of the first spring is connected with the bottom surface of the inner cavity of the valve cover, and the other end of the first spring is connected with the top end of the sliding valve body.
4. A one-way intake valve according to claim 2, wherein,
the sliding valve body is provided with a conical groove towards the bottom of the valve seat, and the conical groove is communicated with the first air passage;
the valve core is provided with a conical surface towards the top of the sliding valve body, the conical surface has the same inclination angle with the groove wall of the conical groove, and the conical surface is selectively contacted with the groove wall of the conical groove.
5. A one-way intake valve as set forth in claim 4, wherein,
the valve core comprises a shell, a sealing ring and a second spring, the second spring is arranged in the inner cavity of the shell, and two ends of the second spring are respectively connected with the bottom surfaces of the inner cavity of the shell and the valve seat;
the conical surface is arranged at the top end of the shell, an annular groove is formed in the conical surface, and the sealing ring is arranged in the annular groove;
the seal ring is abutted with the groove wall of the conical groove under the condition that the conical surface is contacted with the groove wall of the conical groove.
6. A one-way intake valve as set forth in claim 5, wherein,
the bottom of the inner cavity of the valve seat is provided with a first boss, and the first boss extends around the central shaft of the valve seat to form a first annular boss;
the shell is arranged between the first annular boss and the guide rail sliding sleeve, and the second spring is arranged between the shell and the first annular boss.
7. A one-way intake valve as set forth in claim 4, wherein,
the valve core is provided with an air inlet hole, the air inlet hole is communicated with the air outlet channel, and the air inlet hole is selectively communicated with the first air channel.
8. A one-way intake valve according to claim 3, wherein,
the top surface of the inner cavity of the valve cover is provided with a limit lug which protrudes out of the top surface of the inner cavity of the valve cover and extends towards the valve seat;
and under the condition that the top surface of the sliding valve body is contacted with the bottom surface of the limiting lug, the first air passage is communicated with the second air hole in a centering way.
9. A one-way intake valve as set forth in claim 8, wherein,
the limiting lug extends around the central shaft of the valve cover to form a second annular boss; the top end of the sliding valve body is provided with a second boss, the second annular boss and the sliding valve body are coaxially arranged, and the outer diameter of the second boss is smaller than that of the sliding valve body;
one end of the first spring is connected with the bottom surface of the valve cover and sleeved on the second annular boss; the other end of the first spring is connected with the top end of the sliding valve body and sleeved on the second boss.
10. A compressor comprising a one-way intake valve according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223256857.9U CN218894994U (en) | 2022-12-05 | 2022-12-05 | One-way air inlet valve and compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223256857.9U CN218894994U (en) | 2022-12-05 | 2022-12-05 | One-way air inlet valve and compressor |
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| CN218894994U true CN218894994U (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223256857.9U Active CN218894994U (en) | 2022-12-05 | 2022-12-05 | One-way air inlet valve and compressor |
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