CN114508876A - Throttle valve, air condensing units and air conditioner - Google Patents
Throttle valve, air condensing units and air conditioner Download PDFInfo
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- CN114508876A CN114508876A CN202011281864.7A CN202011281864A CN114508876A CN 114508876 A CN114508876 A CN 114508876A CN 202011281864 A CN202011281864 A CN 202011281864A CN 114508876 A CN114508876 A CN 114508876A
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- throttling
- valve
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- throttle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/003—Filters
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- Thermal Sciences (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a throttling valve, an air conditioner outdoor unit and an air conditioner, wherein the throttling valve comprises a valve seat and a valve core, the valve seat is provided with a first supply and discharge port, an installation cavity and a second supply and discharge port which are sequentially communicated, and the wall of the installation cavity is provided with a throttling overflow hole communicated with the installation cavity; the valve core is arranged in the mounting cavity and is provided with a first inlet and outlet, a throttling channel and a second inlet and outlet which are sequentially communicated, and the first inlet and outlet and the second inlet and outlet are respectively arranged corresponding to the first supply and discharge port and the second supply and discharge port; the valve core is provided with a throttling position, and in the throttling position, fluid can enter the mounting cavity through the first supply and discharge port and the throttling overflow hole before entering the throttling channel through the first inlet and outlet and is mixed in the mounting cavity. The throttle valve described above may enable a silent fluid flow when the fluid is throttled across the throttle valve.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a throttling valve, an air conditioner outdoor unit and an air conditioner.
Background
In the related art, the refrigerant output by the condenser or the evaporator is easy to have a gas-liquid two-phase state, and when the refrigerant in the gas-liquid two-phase state passes through the throttle valve, discontinuous refrigerant noise is easy to generate before and after throttling.
Disclosure of Invention
The invention mainly aims to provide a throttling valve, aiming at reducing the abnormal sound of a refrigerant generated in the throttling process.
In order to achieve the above object, the present invention provides a throttle valve, comprising:
the valve seat is provided with a first supply and discharge port, an installation cavity and a second supply and discharge port which are sequentially communicated, and the wall of the installation cavity is provided with a throttling overflow hole communicated with the installation cavity; and
the valve core is arranged in the installation cavity, and is provided with a first inlet and outlet, a throttling channel and a second inlet and outlet which are sequentially communicated, and the first inlet and outlet and the second inlet and outlet are respectively arranged corresponding to the first supply and discharge port and the second supply and discharge port;
the valve core is provided with a throttling position, and in the throttling position, fluid can firstly enter the installation cavity through the first supply and discharge port and the throttling overflow hole and is mixed in the installation cavity before entering the throttling channel through the first inlet and outlet.
In one embodiment, in the throttling position, a flow guide channel is formed between the outer wall of the valve core and the inner wall of the mounting cavity, and the flow guide channel is communicated with the throttling overflow hole and the mounting cavity.
In an embodiment, the width of the flow guide channel gradually increases in a direction from the second inlet/outlet to the first inlet/outlet.
In one embodiment, on the flow path of the fluid, the inner wall of the throttling overflow hole comprises a first inner wall and a second inner wall which are arranged at intervals;
in the throttling position, the end face where the first inlet and the first outlet are located is located between the first inner wall and the second inner wall.
In one embodiment, the first inner wall is closer to the first supply and discharge port than the second inner wall;
in the throttling position, the end face where the first inlet and the first outlet are located is closer to the first inner wall.
In an embodiment, one end of the valve core, which is close to the first inlet and outlet, is provided with an outer conical surface, a flow guide channel is formed between the outer conical surface and the inner wall of the mounting cavity, the flow guide channel is communicated with the throttling overflow hole and the mounting cavity, and a distance between the outer conical surface and the inner wall of the mounting cavity is gradually increased.
In one embodiment, the diameter of the throttling overflow hole is 1.0-2.5 mm.
In one embodiment, the number of the throttling overflow holes is multiple, and the throttling overflow holes are arranged at intervals along the circumferential direction of the installation cavity.
In an embodiment, the valve core further has a non-throttling position, and in the non-throttling position, after entering the installation cavity through the second supply and discharge port, fluid can be discharged out of the valve seat through the throttling overflow hole and discharged out of the valve seat through the first supply and discharge port after passing through the valve core.
In one embodiment, the valve spool also has a non-throttling position in which the throttle relief orifice is closed.
In one embodiment, in the non-throttling position, the valve spool closes the throttle relief orifice.
In one embodiment, the wall of the installation cavity is further provided with a non-throttling overflow hole communicated with the installation cavity;
in the throttling position, the valve core closes the non-throttling overflow hole;
in the non-throttling position, after entering the installation cavity through the second supply and discharge port, fluid can be discharged out of the valve seat through the non-throttling overflow hole and discharged out of the valve seat from the first supply and discharge port through the valve core.
In one embodiment, the throttling overflow aperture is closer to the first supply and discharge port than the non-throttling overflow aperture in the flow path of the fluid;
the valve core is movably arranged in the mounting cavity, and the throttling position and the non-throttling position can be switched by flow pressure provided by fluid flowing reversely.
In one embodiment, the diameter of the throttling overflow hole is the same as the diameter of the non-throttling overflow hole.
In one embodiment, the number of the throttling overflow holes is the same as that of the non-throttling overflow holes, and the throttling overflow holes are arranged in a one-to-one correspondence manner.
In one embodiment, the valve seat is further provided with a first limiting cavity communicated with the first supply and discharge port and the mounting cavity;
the throttle valve further comprises a check ring, and the check ring is arranged in the first limiting cavity;
in the throttling position, the valve core is positioned outside the retainer ring;
in the non-throttling position, the valve core is limited in the retainer ring.
In one embodiment, the valve core has an outer conical surface and the retainer ring has an inner conical surface that mates with the outer conical surface.
In one embodiment, the valve seat is further provided with a second limiting cavity communicated with the mounting cavity and the second supply and discharge port;
in the throttling position, the valve core is limited in the second limiting cavity;
in the non-throttling position, the valve core is positioned outside the second limit cavity.
In one embodiment, the throttle valve further comprises a valve body, and the valve body is provided with a first flow port, a fluid channel and a second flow port which are communicated in sequence;
the valve seat is arranged on the valve body, the first feeding and discharging port and the second feeding and discharging port are respectively arranged corresponding to the first circulation port and the second circulation port, a fluid passage is formed between the wall of the installation cavity and the inner wall of the fluid channel, and the throttling position is that the throttling overflow hole is communicated with the fluid passage and the installation cavity.
In an embodiment, the throttle valve further includes a first filter screen and a second filter screen disposed in the flow channel, the first filter screen is located between the first circulation port and the first supply/discharge port, and the second filter screen is located between the second circulation port and the second supply/discharge port.
The invention also provides an air conditioner outdoor unit which comprises the throttle valve.
The invention also provides an air conditioner which comprises the throttle valve.
In the throttle valve, in the throttle position, fluid can enter the installation cavity through the first supply and discharge port and the throttle overflow hole before entering the throttle channel through the first inlet and outlet, and is mixed in the installation cavity. When the valve core is positioned at the throttling position, fluid can enter the installation cavity through the first supply and discharge port and can also enter the installation cavity through the throttling overflow hole, and the fluid entering the installation cavity through the first supply and discharge port and the throttling overflow hole is mixed in the installation cavity before entering the throttling channel through the first inlet and outlet.
Before throttling, namely before the fluid enters the throttling channel through the first inlet and outlet, the fluid is mixed in the mounting cavity, so that the mixing degree of the gas-liquid two-phase fluid in the throttling valve can be improved, the gas-liquid two-phase fluid is mixed more uniformly, the abnormal sound condition of the fluid flow before throttling can be improved, the fluid flow state after throttling (namely after the fluid is discharged out of the throttling channel through the second inlet and outlet) can be further improved, the fluid flow tends to be stable, the fluid flow abnormal sound experience is optimized, the discontinuous fluid abnormal sound generated before and after the fluid throttling is avoided, and the fluid flow is muted when the fluid is throttled by the throttling valve. The throttling overflow hole is additionally arranged in the throttling valve, so that a fluid flow channel of the throttling valve is improved, gas-liquid two-phase fluid can be uniformly mixed before throttling, the flowing abnormal sound condition of the fluid before throttling and after throttling can be improved, discontinuous fluid abnormal sound is avoided before throttling and after throttling, and the flowing silence of the fluid when the fluid is throttled by the throttling valve is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic top view of a throttle valve according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the throttle valve of FIG. 1 in a throttle mode of operation;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic fluid flow diagram of a conventional throttle valve in a throttle mode of operation;
FIG. 5 is a schematic fluid flow diagram of the throttle valve of FIG. 1 in a throttle mode of operation;
FIG. 6 is a schematic cross-sectional view of the throttle valve of FIG. 1 in an unthrottled mode of operation;
fig. 7 is a partially enlarged view of fig. 6 at B.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further described with reference to the accompanying drawings.
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 should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a throttle valve.
In the embodiment of the present invention, as shown in fig. 1 to 3, the throttle valve 10 includes a valve seat 200 and a valve element 300.
The valve seat 200 has a first supply/discharge port 210, a mounting chamber 220, and a second supply/discharge port 230, which are sequentially communicated. The wall of the installation cavity 220 is provided with a throttling overflow hole 240 communicated with the installation cavity 220.
The valve cartridge 300 is disposed in the mounting cavity 220. The valve body 300 has a first inlet/outlet 310, a throttle passage 320, and a second inlet/outlet 330, which are sequentially communicated with each other. The first inlet/outlet 310 and the second inlet/outlet 330 are provided corresponding to the first supply/discharge port 210 and the second supply/discharge port 230, respectively.
As shown in fig. 1-3, the valve spool 300 has a throttle position, i.e., the throttle valve 10 has a throttle mode of operation. In the throttling position, the fluid can enter the installation cavity 220 through the first supply and discharge port 210 and the throttling overflow hole 240 before entering the throttling channel 320 through the first inlet and outlet port 310, and then be mixed in the installation cavity 220. That is, when the valve element 300 is in the throttling position, the fluid may enter the installation cavity 220 through the first supply and discharge port 210, or may enter the installation cavity 220 through the throttling overflow hole 240, and the fluid entering the installation cavity 220 through the first supply and discharge port 210 and the throttling overflow hole 240 is mixed in the installation cavity 220 before entering the throttling channel 320 through the first inlet and outlet 310.
Before throttling, namely before the fluid enters the throttling channel 320 through the first inlet and outlet 310, the fluid is mixed in the mounting cavity 220, so that the mixing degree of gas-liquid two-phase fluid in the throttling valve 10 can be improved, the gas-liquid two-phase fluid is mixed more uniformly, the abnormal sound condition of fluid flow before throttling can be improved, the fluid flow state after throttling (namely after the fluid is discharged out of the throttling channel 320 through the second inlet and outlet 330) can be improved, the fluid flow tends to be stable, the experience of fluid flow abnormal sound is optimized, the discontinuous fluid abnormal sound generated before and after fluid throttling is avoided, and the fluid flow is enabled to be silent when the fluid throttles through the throttling valve 10. That is, the throttle valve 10 improves the fluid flow channel of the throttle valve 10 by additionally arranging the throttle overflow hole 240, so that the gas-liquid two-phase fluid can be uniformly mixed before throttling, the flow noise condition of the fluid before throttling and after throttling can be improved, discontinuous flow noise generated before throttling and after throttling can be avoided, and the flow noise of the fluid when the fluid is throttled by the throttle valve 10 can be muted.
As shown in fig. 4 and 5, fig. 4 is a schematic diagram of fluid flow of the conventional throttle valve in the throttle operation mode, and fig. 5 is a schematic diagram of fluid flow of the throttle valve 10 in the throttle operation mode. As can be seen from fig. 4 and 5, the fluid shown in fig. 5 has a significant mixing process before the first port 310 before entering the throttling channel 320 through the first port 310.
In the present embodiment, in the throttling position, a flow guide channel 400 is formed between the outer wall of the valve core 300 and the inner wall of the mounting cavity 220, and the flow guide channel 400 communicates the throttling overflow hole 240 and the mounting cavity 220. Thus, the fluid can move between the first inlet/outlet 310 and the first supply/discharge port 210 through the flow guide channel 400, which is more beneficial to uniform mixing of the fluid.
In the present embodiment, in the flow path of the fluid, the inner wall of the throttle overflow hole 240 includes a first inner wall 242 and a second inner wall 244 which are arranged at intervals, and the first inner wall 242 is closer to the first supply and discharge port 210 than the second inner wall 244. In the throttling position, the end surface of the first port 310 is positioned between the first inner wall 242 and the second inner wall 244. Therefore, the flow guide channel 400 can be formed, and the situation that the valve core 300 completely covers the throttling overflow hole 240 and the fluid outflow resistance of the throttling overflow hole 240 is too large due to the fact that the end face where the first inlet/outlet 310 is located protrudes out of the first inner wall 242 (the end face where the first inlet/outlet 310 is located is closer to the first supply/discharge port 210 relative to the first inner wall 242) can be avoided. It is understood that the guide passage 400 may be considered omitted when the second inner wall 244 is closer to the first supply and discharge port 210 with respect to the end surface where the first inlet and outlet port 310 is located.
In the present embodiment, in the throttling position, the end surface where the first port 310 is located is closer to the first inner wall 242, that is, the distance between the end surface where the first port 310 is located and the first inner wall 242 is smaller than the distance between the end surface where the first port 310 is located and the second inner wall 244. In this way, the flow channel 400 can be made longer, thereby facilitating the fluid to be uniformly mixed.
In the present embodiment, the width of the guide passage 400 gradually increases in the direction from the second port 330 to the first port 310. Therefore, the fluid is more favorably and uniformly mixed.
In this embodiment, an end of the valve element 300 near the first port 310 has an outer tapered surface 302, and a flow guide channel 400 is formed between the outer tapered surface 302 and an inner wall of the mounting cavity 220. The distance between the outer tapered surface 302 and the inner wall of the mounting cavity 220 gradually increases from the second port 330 to the first port 310.
In this embodiment, the diameter of the throttle overflow hole 240 is 1.0-2.5 mm. Among them, too small a diameter of the throttle overflow hole 240 may cause too large a flow resistance of the fluid entering the installation cavity 220 through the throttle overflow hole 240, while too large a diameter of the throttle overflow hole 240 may cause too small a flow resistance of the fluid entering the installation cavity 220 through the throttle overflow hole 240, and too large a diameter of the throttle overflow hole 240 may also affect the structural strength of the valve cartridge 300. In combination with the above factors, the diameter of the throttle overflow aperture 240 is set to be 1.0-2.5 mm.
In this embodiment, there are a plurality of throttle overflow holes 240, and the plurality of throttle overflow holes 240 are arranged at intervals along the circumferential direction of the installation cavity 220. Therefore, the fluid entering the installation cavity 220 through the first supply and discharge port 210 and the throttling overflow hole 240 can be mixed uniformly in the installation cavity 220. In the present embodiment, the plurality of throttle overflows 240 are arranged at equal intervals in the circumferential direction of the installation cavity 220. In the present embodiment, there are two throttle overflow holes 240.
In the present embodiment, as shown in fig. 6 and 7, the spool 300 also has an unthrottled position, that is, the throttle valve 10 has an unthrottled mode of operation. The valve spool 300 is switchable between a throttled position and a non-throttled position. It will be appreciated that in the throttle mode of operation, the output flow of the throttle valve 10 is relatively small, whereas in the throttle mode of operation, the output flow of the throttle valve 10 is relatively large.
In this embodiment, in the non-throttle position, the throttle overflow aperture 240 is closed. In this manner, the throttle spill orifice 240 is prevented from interfering with the unthrottled mode of operation of the throttle valve 10.
In this embodiment, in the un-throttled position, the valve spool 300 closes the throttle relief orifice 240. As a result, the throttle relief hole 240 can be closed while the valve body 300 is moved to switch the valve body 300 from the throttle position to the non-throttle position. It will be appreciated that in other embodiments, a throttle seal structure may be additionally provided to seal the throttle overflow aperture 240, and in this case, the valve spool 300 may not seal the throttle overflow aperture 240 in the non-throttle position.
In this embodiment, the wall of the installation cavity 220 is further provided with a non-throttle overflow hole 250 communicated with the installation cavity 220. In the non-throttling position, after entering the mounting cavity 220 through the second supply and discharge port 230, the fluid can be discharged out of the valve seat 200 through the non-throttling overflow hole 250 and out of the valve seat 200 through the first supply and discharge port 210 after passing through the valve element 300. That is, in the non-throttling position, after the fluid enters the mounting cavity 220 through the second supply/discharge port 230, a part of the fluid is directly discharged out of the valve seat 200 through the non-throttling overflow hole 250, and a part of the fluid is discharged out of the valve seat 200 from the first supply/discharge port 210 after sequentially passing through the second inlet/outlet 330, the throttling channel 320 and the first inlet/outlet 310. That is, the throttle valve 10 has a large output flow rate by adding the non-throttle overflow hole 250, so that the throttle valve 10 has a non-throttle operation mode.
In the throttle position, in this embodiment, the throttle relief orifice 240 is open and the valve spool 300 closes the non-throttle relief orifice 250. In the non-throttling position, the non-throttling spill orifice 250 is in an open state and the valve cartridge 300 closes the throttling spill orifice 240. In this manner, the unthrottled spill orifice 250 may be prevented from interfering with the throttled mode of operation of the throttle valve 10, and the throttled spill orifice 240 may be prevented from interfering with the unthrottled mode of operation of the throttle valve 10. It is understood that in other embodiments, an un-throttling closing structure for closing the un-throttling relief hole 250 may be additionally provided, and in this case, in the throttling position, the valve core 300 may not close the un-throttling relief hole 250. Similarly, a throttle closing structure for closing the throttle overflow hole 240 may be additionally provided, and at this time, in the non-throttle position, the valve core 300 may not close the throttle overflow hole 240.
In the present embodiment, the throttle spill port 240 and the non-throttle spill port 250 are provided at the same time, and there is a difference in the front-rear position between the throttle spill port 240 and the non-throttle spill port 250 in the flow path of the fluid, that is, in the flow path of the fluid, the throttle spill port 240 is closer to the first supply/discharge port 210 than the non-throttle spill port 250. Thus, the switching between the throttle position and the non-throttle position can be realized by controlling the valve element 300 to move on the flow path of the fluid, which is very convenient for realizing the switching between the throttle position and the non-throttle position. It is understood that in other embodiments, the valve element 300 may not move in the fluid flow path, but may move in other directions, and the throttle position and the non-throttle position may be switched.
In this embodiment, the valve core 300 is movably disposed in the mounting cavity 220. In the throttling operation mode, fluid flows in the direction of the arrow shown in fig. 2, and the spool 300 is stably in the throttling position under the flow pressure of the fluid; while in the unthrottled mode, the flow path of the fluid is reversed, flowing in the direction of the arrows shown in fig. 6, and the valve spool 300 moves from the throttled position to the unthrottled position and stabilizes in the unthrottled position under the flow pressure of the fluid. That is, in the present embodiment, the switching between the throttled and non-throttled positions is achieved by the flow pressure provided by the fluid flowing in the opposite direction. It is understood that in other embodiments, the switching between the throttling position and the non-throttling position may be achieved by providing an additional moving mechanism, and moving the valve element 300 by the moving mechanism.
In other embodiments, in the non-throttle position, when the fluid enters the installation cavity 220 through the second supply/discharge port 230, and is discharged out of the valve seat 200 through the throttle overflow hole 240 and out of the valve seat 200 through the first supply/discharge port 210 after passing through the valve element 300, the throttle valve 10 can have a larger output flow rate, so that the throttle valve 10 has the non-throttle operation mode. In this case, the unthrottled spill orifice 250 may be omitted. Also, in this case, the throttle overflow hole 240 is not closed in the non-throttle position.
In this embodiment, the diameter of the un-throttled overflow orifice 250 is 1.0-2.5 mm. Too small a diameter of the non-throttle spill hole 250 causes too large a flow resistance of the fluid discharged to the outside of the valve seat 200 through the non-throttle spill hole 250, while too large a diameter of the non-throttle spill hole 250 causes too small a flow resistance of the fluid discharged to the outside of the valve seat 200 through the non-throttle spill hole 250, and too large a diameter of the non-throttle spill hole 250 also affects the structural strength of the valve body 300. In combination with the above factors, the diameter of the non-throttling overflow hole 250 is set to be 1.0-2.5 mm.
In this embodiment, the diameter of the throttle spill orifice 240 is the same as the diameter of the non-throttle spill orifice 250. Thus, it is more advantageous to close or open the throttle relief hole 240 and the non-throttle relief hole 250, and it is more advantageous to manufacture the valve cartridge 300.
In this embodiment, there are a plurality of the non-throttle overflow holes 250, and the plurality of non-throttle overflow holes 250 are arranged at intervals along the circumferential direction of the installation cavity 220. In this manner, fluid is better facilitated to be discharged out of the valve seat 200 through the unthrottled spill orifice 250. In the present embodiment, the plurality of non-throttle overflow holes 250 are arranged at equal intervals along the circumferential direction of the installation cavity 220. In this embodiment, there are two non-throttling spill orifices 250.
In the present embodiment, the number of the throttle overflow holes 240 is the same as the number of the non-throttle overflow holes 250, and they are arranged in a one-to-one correspondence. Thus, it is more advantageous to close or open the throttle relief hole 240 and the non-throttle relief hole 250, and it is more advantageous to manufacture the valve cartridge 300.
In this embodiment, the valve seat 200 further has a first limiting chamber 260 communicating the first supply/discharge port 210 and the mounting chamber 220. The throttle valve 10 further includes a retainer ring 500, and the retainer ring 500 is disposed in the first limiting chamber 260. In the throttling position, the valve spool 300 is positioned outside the retainer ring 500; in the un-throttled position, the valve spool 300 is trapped within the retainer ring 500. In this way, the valve element 300 can be prevented from sliding out of the valve seat 200 from the first supply/discharge port 210 in the non-throttling position.
In this embodiment, the retainer ring 500 has an inner tapered surface 502 that mates with the outer tapered surface 302. As such, insertion of the valve cartridge 300 into the retainer ring 500 is greatly facilitated.
In this embodiment, the valve seat 200 further has a second limiting chamber 270 communicating with the mounting chamber 220 and the second supply/discharge port 230. In the throttling position, the spool 300 is restrained in the second restraining chamber 270. In the unthrottled position, the spool 300 is located outside of the second limit chamber 270. In this way, it is possible to prevent the valve element 300 from slipping out of the valve seat 200 from the second supply and discharge port 230 in the throttle position.
In the present embodiment, the throttle valve 10 further includes a valve body 600. The valve body 600 has a first communication port 610, a fluid passage 620, and a second communication port 630, which are communicated in this order.
The valve seat 200 is provided in the valve body 600. A fluid passageway 700 is formed between the walls of the mounting cavity 220 and the inner wall of the fluid passageway 620. In the throttling position, the throttling overflow aperture 240 communicates the fluid passageway 700 with the mounting cavity 220. The first supply and drain 210 is in communication with the first fluid port 610, and an end of the fluid passageway 700 proximate the first supply and drain 210 is in communication with the first fluid port 610. In the un-throttled position, the un-throttled spill orifice 250 connects the fluid passageway 700 with the mounting cavity 220.
In this embodiment, the throttle valve 10 further includes a first filter 800 and a second filter 900 disposed in the flow channel 700. The first screen 800 is located between the first circulation opening 610 and the first supply and discharge opening 210. The second screen 900 is located between the second circulation opening 630 and the second supply/discharge opening 230. The first filter screen 800 and the second filter screen 900 are arranged, so that the throttling channel 330 with smaller inner diameter can be effectively prevented from being blocked by impurities in the fluid.
The invention also provides an air conditioner outdoor unit, which comprises the throttle valve 10.
The invention also provides an air conditioner which comprises the throttle valve 10.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (22)
1. A throttle valve, comprising:
the valve seat is provided with a first supply and discharge port, an installation cavity and a second supply and discharge port which are sequentially communicated, and the wall of the installation cavity is provided with a throttling overflow hole communicated with the installation cavity; and
the valve core is arranged in the installation cavity, and is provided with a first inlet and outlet, a throttling channel and a second inlet and outlet which are sequentially communicated, and the first inlet and outlet and the second inlet and outlet are respectively arranged corresponding to the first supply and discharge port and the second supply and discharge port;
the valve core is provided with a throttling position, and in the throttling position, fluid can firstly enter the installation cavity through the first supply and discharge port and the throttling overflow hole and is mixed in the installation cavity before entering the throttling channel through the first inlet and outlet.
2. The throttling valve of claim 1, wherein in the throttling position, a flow guide channel is formed between the outer wall of the valve core and the inner wall of the mounting cavity, and the flow guide channel is communicated with the throttling overflow hole and the mounting cavity.
3. The throttling valve of claim 2, wherein the width of the flow directing passage increases in a direction from the second port to the first port.
4. The throttling valve of claim 2, wherein the inner wall of the throttling spill orifice comprises a first inner wall and a second inner wall which are arranged at intervals in the flow path of the fluid;
in the throttling position, the end face where the first inlet and the first outlet are located is located between the first inner wall and the second inner wall.
5. The throttling valve of claim 4, wherein the first interior wall is closer to the first supply and exhaust port than the second interior wall;
in the throttling position, the end face where the first inlet and the first outlet are located is closer to the first inner wall.
6. The throttling valve of claim 1, wherein an end of the valve core close to the first inlet/outlet has an outer conical surface, a flow guide channel is formed between the outer conical surface and the inner wall of the mounting cavity and is communicated with the throttling overflow hole and the mounting cavity, and the distance between the outer conical surface and the inner wall of the mounting cavity is gradually increased.
7. The throttling valve of claim 1, wherein the diameter of the throttling spill orifice is 1.0-2.5 mm.
8. The throttling valve of claim 1, wherein the throttling overflow hole is a plurality of throttling overflow holes, and the plurality of throttling overflow holes are arranged at intervals along the circumferential direction of the mounting cavity.
9. The throttling valve of claim 1, wherein the spool further has an un-throttled position in which fluid, after entering the mounting chamber through the second supply and exhaust port, is able to exit the valve seat through the throttling relief orifice and the spool from the first supply and exhaust port to the valve seat.
10. The throttle valve of claim 1, wherein the spool further has an un-throttled position in which the throttle relief orifice is closed.
11. The throttling valve of claim 10, wherein in the un-throttled position, the spool closes the throttle relief orifice.
12. The throttling valve of claim 11, wherein the wall of the mounting cavity is further provided with an unthrottled overflow hole communicated with the mounting cavity;
in the throttling position, the valve core closes the non-throttling overflow hole;
in the non-throttling position, after entering the installation cavity through the second supply and discharge port, fluid can be discharged out of the valve seat through the non-throttling overflow hole and discharged out of the valve seat from the first supply and discharge port through the valve core.
13. The throttling valve of claim 12, wherein the throttling spill orifice is closer to the first supply and discharge port than the unthrottled spill orifice in a flow path of the fluid;
the valve core is movably arranged in the mounting cavity, and the throttling position and the non-throttling position can be switched by flow pressure provided by fluid flowing reversely.
14. The throttling valve of claim 12, wherein the throttling spill orifice has a diameter that is the same as a diameter of the unthrottled spill orifice.
15. The throttling valve of claim 12, wherein the number of throttling spill orifices is the same as the number of non-throttling spill orifices and is arranged in a one-to-one correspondence.
16. The throttling valve of claim 10, wherein the valve seat further has a first restricting chamber communicating the first supply and discharge port and the mounting chamber;
the throttle valve further comprises a check ring, and the check ring is arranged in the first limiting cavity;
in the throttling position, the valve core is positioned outside the retainer ring;
in the non-throttling position, the valve core is limited in the retainer ring.
17. The throttle valve of claim 16 wherein the spool has an outer conical surface and the retainer ring has an inner conical surface that mates with the outer conical surface.
18. The throttling valve of claim 10, wherein the valve seat further has a second restricting chamber communicating the mounting chamber and the second supply and discharge port;
in the throttling position, the valve core is limited in the second limiting cavity;
in the non-throttling position, the valve core is positioned outside the second limit cavity.
19. The throttle valve of claim 1, further comprising a valve body having a first flow port, a fluid passage, and a second flow port, which are connected in series;
the valve seat is arranged on the valve body, the first feeding and discharging port and the second feeding and discharging port are respectively arranged corresponding to the first circulation port and the second circulation port, a fluid passage is formed between the wall of the installation cavity and the inner wall of the fluid channel, and the throttling position is that the throttling overflow hole is communicated with the fluid passage and the installation cavity.
20. The throttling valve of claim 19, further comprising a first screen and a second screen disposed in the flow passage, wherein the first screen is positioned between the first flow port and the first supply and discharge port, and wherein the second screen is positioned between the second flow port and the second supply and discharge port.
21. An outdoor unit of an air conditioner, comprising the throttle valve as set forth in any one of claims 1 to 20.
22. An air conditioner characterized by comprising the throttle valve as recited in any one of claims 1 to 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281864.7A CN114508876A (en) | 2020-11-16 | 2020-11-16 | Throttle valve, air condensing units and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281864.7A CN114508876A (en) | 2020-11-16 | 2020-11-16 | Throttle valve, air condensing units and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114508876A true CN114508876A (en) | 2022-05-17 |
Family
ID=81546030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011281864.7A Pending CN114508876A (en) | 2020-11-16 | 2020-11-16 | Throttle valve, air condensing units and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114508876A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468338A (en) * | 2022-09-02 | 2022-12-13 | 宁波奥克斯电气股份有限公司 | Throttling device, throttling method and air conditioner |
-
2020
- 2020-11-16 CN CN202011281864.7A patent/CN114508876A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468338A (en) * | 2022-09-02 | 2022-12-13 | 宁波奥克斯电气股份有限公司 | Throttling device, throttling method and air conditioner |
| CN115468338B (en) * | 2022-09-02 | 2023-11-07 | 宁波奥克斯电气股份有限公司 | Throttling device, throttling method and air conditioner |
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