CN110966431A - Switching valve and refrigerator that reliability is high - Google Patents
Switching valve and refrigerator that reliability is high Download PDFInfo
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- CN110966431A CN110966431A CN201911286169.7A CN201911286169A CN110966431A CN 110966431 A CN110966431 A CN 110966431A CN 201911286169 A CN201911286169 A CN 201911286169A CN 110966431 A CN110966431 A CN 110966431A
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- switching valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
- F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/045—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with pivotal obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a switching valve with high reliability and a refrigerator. The switching valve includes: the valve seat, the rotary slide block and the driving mechanism are arranged, when the valve seat is at the first working position, the first outlet guide port and the second outlet guide port are both communicated with the communicating groove, and the third outlet guide port and the first inlet guide port are communicated through the first outlet notch; when the second working position is adopted, the third outlet guide port and the second outlet guide port are both communicated with the communicating groove, and the first outlet guide port and the first introducing port are communicated through the first outlet notch. According to the switching valve and the refrigerator with high reliability, the driving mechanism is adopted to drive the rotary slide block to switch pipelines, the problem that the pipeline needs to be switched by using the pressure difference between evaporation pressure and condensation pressure in the prior art is solved, and the refrigerator can be reliably switched between a normal working state and a defrosting state, so that the defrosting efficiency is increased, the defrosting time is shortened, and the temperature of a freezing chamber is increased to a smaller extent.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a switching valve with high reliability and a refrigerator.
Background
Present air-cooled refrigerator all has automatic frost function, and the common frost mode that adopts the below at the evaporimeter and set up electric heating pipe has the efficient and higher problem of freezer temperature rise of defrosting, and also has the switching that utilizes the cross valve to change the frost mode of defrosting, but because the refrigerator adopts the low pressure refrigerant, when ambient temperature is lower, the differential pressure value of evaporating pressure and condensing pressure is less, and the cross valve can't commutate.
Disclosure of Invention
In order to solve the technical problem that in the prior art, frost can not be switched due to a small differential pressure value caused by low ambient temperature, a switching valve and a refrigerator which are high in reliability and switched by driving a rotary sliding block through a driving mechanism are provided.
A switching valve, comprising:
the valve comprises a valve seat, wherein a first outlet, a second outlet, a third outlet and a first inlet are arranged on a first side surface of the valve seat, a first outlet guide, a second outlet guide and a third outlet guide are arranged on a second side surface of the valve seat, a first inlet guide is arranged on the peripheral side surface of the valve seat, the first outlet is communicated with the first outlet guide, the second outlet is communicated with the second outlet guide, the third outlet is communicated with the third outlet guide, and the first inlet is communicated with the first inlet guide;
the rotating sliding block is abutted against the second side face, a communication groove, a first leading-out notch and a second leading-out notch are formed in the surface, facing the second side face, of the rotating sliding block, and the rotating sliding block is provided with a first working position and a second working position;
the driving mechanism is arranged on the valve seat and can drive the rotating slide block to switch between the first working position and the second working position;
when the first working position is adopted, the first outlet guide port and the second outlet guide port are both communicated with the communication groove, and the third outlet guide port and the first inlet guide port are communicated through the first outlet notch;
when the second working position is adopted, the third outlet guide port and the second outlet guide port are both communicated with the communicating groove, and the first outlet guide port and the first introducing port are communicated through the first outlet notch.
The valve seat comprises a cylindrical structure, and the cylindrical end face forms the second side face.
The end part of the cylindrical structure protrudes to form a boss, the diameter of the boss is smaller than that of the cylindrical structure, the end part, far away from the cylindrical structure, of the boss forms the second side face, and the first introducing port is located on the peripheral side face of the boss.
The first outlet, the second outlet and the third outlet are circularly distributed by taking the circle center of the second side surface as the circle center.
The included angle of the first outlet and the second outlet at the circle center is equal to the included angle of the second outlet and the third outlet at the circle center.
The first introduction port is located on a peripheral side surface away from the second introduction port.
The cross section of the rotary sliding block is circular, the cross section of the communicating groove is arc-shaped, the circle center of the circular shape is used as the circle center, and the angle of the center angle occupied by the arc-shaped is equal to the angle of the included angle of the first leading-out port and the second leading-out port at the circle center.
The cross sections of the first derivation notch and the second derivation notch are both fan-shaped, and the center of the fan-shaped circle is concurrent with the center of the circular circle.
The switching valve further comprises an outer cover, and the outer cover is buckled on the valve seat.
The driving mechanism further comprises a stator component, a magnetic rotor and a rotating shaft, wherein the stator component is arranged on the outer side of the outer cover, the magnetic rotor and the rotating shaft are arranged in the outer cover, the magnetic rotor is arranged on the rotating shaft, and the rotating shaft or the magnetic rotor drives the rotating slide block to rotate.
The middle part of the rotating sliding block is provided with a mounting hole, and the rotating sliding block is sleeved on the periphery of the rotating shaft through the mounting hole.
The end part of the rotary sliding block, which is far away from the valve seat, is provided with a transmission notch, the magnetic rotor is provided with a transmission bulge, and the transmission bulge extends into the transmission notch.
The second side face is provided with a stop pin, the magnetic rotor is provided with a first stop protrusion and a second stop protrusion, the stop pin is abutted to the first stop protrusion in the first working position, and the stop pin is abutted to the second stop protrusion in the second working position.
And the stop pin is sleeved with a buffer structure.
The driving mechanism further comprises a spring, the spring is sleeved on the rotating shaft, one end of the spring is abutted to the rotor, and the other end of the spring is abutted to the end portion, far away from the valve seat, of the rotating slide block.
An inlet pipe is arranged at the first inlet, a first outlet pipe is arranged at the first outlet, a second outlet pipe is arranged at the second outlet, a third outlet pipe is arranged at the third outlet, the diameter of the first outlet pipe, the diameter of the second outlet pipe and the diameter of the third outlet pipe are equal, and the diameter of the inlet pipe is larger than that of the first outlet pipe.
The valve seat and the driving mechanism are fixedly arranged through an elastic positioning pin.
A refrigerator comprises the switching valve.
The refrigerator comprises a compressor, a condenser and an evaporator, wherein a first inlet is communicated with an exhaust port of the compressor, a first outlet is communicated with the condenser, a second outlet is communicated with an air return port of the compressor, and a third outlet is communicated with the evaporator.
According to the switching valve and the refrigerator with high reliability, the driving mechanism is adopted to drive the rotary slide block to switch pipelines, the problem that the pipeline needs to be switched by using the pressure difference between evaporation pressure and condensation pressure in the prior art is solved, and the refrigerator can be reliably switched between a normal working state and a defrosting state, so that the defrosting efficiency is increased, the defrosting time is shortened, and the temperature of a freezing chamber is increased to a smaller extent.
Drawings
Fig. 1 is a cross-sectional view of a switching valve according to an embodiment of the present invention;
fig. 2 is a plan view of a valve seat of a switching valve according to an embodiment of the switching valve and the refrigerator of the present invention;
fig. 3 is a plan view of a switching valve with high reliability and a rotary slider of the switching valve of the embodiment of the refrigerator provided by the present invention;
fig. 4 is a bottom view of a switching valve with high reliability and a magnetic rotor of the switching valve according to the embodiment of the refrigerator;
FIG. 5 is a schematic diagram of the valve seat, the rotary slider and the magnetic rotor of the switching valve of the embodiment of the refrigerator and the switching valve with high reliability provided by the present invention in the first working position;
FIG. 6 is a schematic diagram showing the engagement of the valve seat, the rotary slider and the magnetic rotor when the switching valve of the embodiment of the refrigerator and the switching valve with high reliability provided by the present invention is at the second working position;
FIG. 7 is a perspective view of a valve seat of an embodiment of a switching valve and a refrigerator with high reliability according to the present invention;
FIG. 8 is another perspective view of the valve seat of the embodiment of the switching valve and the refrigerator with high reliability provided by the present invention;
in the figure:
1. a valve seat; 11. a first outlet; 12. a second outlet; 13. a third outlet; 14. a first inlet; 15. a first lead-out opening; 16. a second outlet port; 17. a third outlet port; 18. a first introduction port; 2. rotating the slide block; 21. a communicating groove; 22. a first lead-out notch; 23. a second lead-out notch; 3. a drive mechanism; 4. a housing; 31. a stator component; 32. a magnetic rotor; 33. a rotating shaft; 24. a transmission notch; 321. a transmission projection; 19. a retaining pin; 322. a first stopper protrusion; 323. a second stopper projection; 34. a spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The switching valve shown in fig. 1 to 8 includes:
a valve seat 1, a first side of the valve seat 1 is provided with a first outlet 11, a second outlet 12, a third outlet 13 and a first inlet 14, the second side surface of the valve seat 1 is provided with a first outlet guide 15, a second outlet guide 16 and a third outlet guide 17, the peripheral side surface of the valve seat 1 is provided with a first inlet 18, and the first outlet 11 is communicated with the first outlet 15 to form a first communication channel, the second outlet 12 is communicated with the second outlet 16 to form a second communication channel, the third outlet 13 is communicated with the third outlet 17 to form a third communication channel, the first inlet 14 is communicated with the first introducing port 18 to form a fourth communication channel, and the first communication channel, the second communication channel, the third communication channel and the fourth communication channel form four channels for communicating the inside and the outside of the switching valve and are used for flowing the refrigerant;
the rotating slider 2 abuts against the second side surface, a communication groove 21, a first derivation notch 22 and a second derivation notch 23 are formed in the surface, facing the second side surface, of the rotating slider 2, and the rotating slider 2 has a first working position and a second working position;
the driving mechanism 3 is arranged on the valve seat 1 and can drive the rotating slide block 2 to rotate so as to switch between the first working position and the second working position;
in the first operating position, the first outlet port 15 and the second outlet port 16 are both communicated with the communication groove 21, and the third outlet port 17 and the first introduction port 18 are communicated with each other through the first outlet notch 22; the refrigerant enters the first inlet 14 from the first introducing port 18, is communicated with the switching valve from the third leading-out port 17 through the first leading-out notch 22 to perform heat exchange operation, flows into the switching valve from the first leading-out port 15 after heat exchange is finished, passes through the communication groove 21, and flows out of the switching valve from the second leading-out port 16 to form a first working state;
in the second operating position, the third outlet 17 and the second outlet 16 are both communicated with the communication groove 21, the first outlet 15 and the first inlet 18 are communicated with each other through the first outlet notch 22, the refrigerant enters the first inlet 14 through the first inlet 18, flows out of the switching valve through the first outlet 15 through the second outlet notch 23, performs a heat exchange operation, flows into the switching valve through the communication groove 21 and the third outlet 17 after the heat exchange is completed, and flows out of the switching valve through the second outlet 16, thereby forming a second operating state; .
The valve seat 1 comprises a cylindrical structure, the cylindrical end face forms the second side face, namely the second side face is a plane, the first guide outlet 15, the second guide outlet 16 and the third guide outlet 17 can be conveniently machined, and meanwhile, the rotary sliding block 2 can be well attached to the second side face to slide, so that absolute sealing is formed between the guide outlets which are not communicated, and the reliability of the switching valve is guaranteed.
The end part of the boss protrudes to form a boss, the diameter of the boss is smaller than that of the cylindrical structure, the end part of the boss, far away from the cylindrical structure, forms the second side surface, the first introducing port 18 is located on the peripheral side surface of the boss, the first introducing port 18 is convenient to machine, meanwhile, the boss is used for increasing the thickness of the valve seat 1, and machining difficulty of the valve seat 1 is reduced.
The first outlet 15, the second outlet 16, and the third outlet 17 are circularly distributed around the center of the second side surface.
The included angle of the circle center of the first guide outlet 15 and the circle center of the second guide outlet 16 is equal to the included angle of the circle center of the second guide outlet 16 and the third guide outlet 17, so that when the rotary slide block 2 rotates, the first guide outlet 15 is communicated with the second guide outlet 16 and is not communicated with the third guide outlet 17 only by rotating the angle equal to the included angle, or the third guide outlet 17 is communicated with the second guide outlet 16 and is not communicated with the first guide outlet 15, and the reliability of the switching valve is guaranteed.
The first introduction port 18 is located on the peripheral side surface away from the second introduction port 16, and the strength of the valve seat 1 is ensured without interference between the communicating passages.
The cross section of the rotary sliding block 2 is circular, the diameter of the rotary sliding block 2 is smaller than that of the valve seat 1, the cross section of the communicating groove 21 is arc-shaped, the circle center of the circular shape is used as the circle center, and the angle of the central angle occupied by the arc-shaped is equal to the angle of the included angle between the circle center of the first outlet 15 and the second outlet 16.
The cross sections of the first lead-out notch 22 and the second lead-out notch 23 are both fan-shaped, and the center of the fan-shaped circle is in the same point with the center of the circle, so that the refrigerant can conveniently flow out from the first lead-in port 18.
The switching valve further comprises an outer cover 4, the outer cover 4 is buckled on the valve seat 1, and the refrigerant flows into the outer cover 4 through the first introducing port 18 and is guided to the corresponding leading-out port through the fan-shaped leading-out notch to flow out.
Actuating mechanism 3 still includes stator part 31, magnetic rotor 32 and pivot 33, stator part 31 set up in the outside of dustcoat 4, magnetic rotor 32 with pivot 33 all set up in the dustcoat 4, just magnetic rotor 32 set up in on the pivot 33, pivot 33 or magnetic rotor 32 drives rotatory slider 2 rotates, when giving excitation pulse to actuating mechanism 3, magnetic rotor 32 and pivot 33 can produce the rotation to can drive rotatory slider 2 and rotate the switching of accomplishing first operating position and second operating position.
The middle part of the rotary sliding block 2 is provided with a mounting hole, the rotary sliding block 2 is sleeved on the periphery of the rotating shaft 33 through the mounting hole, and the rotation of the rotary sliding block 2 is realized by the matching of the mounting hole and the rotating shaft 33.
The second side surface is provided with a stop pin 19, the magnetic rotor 32 is provided with a first stop protrusion 322 and a second stop protrusion 323, and in the first working position, the stop pin 19 abuts against the first stop protrusion 322, and in the second working position, the stop pin 19 abuts against the second stop protrusion 323, and the stop pin 19, the first stop protrusion 322 and the second stop protrusion 323 are used for limiting the rotation angle of the magnetic rotor 32, so that the rotation angle of the rotary slide block 2 is limited, and the switching reliability of the switching valve is ensured.
The stop pin 19 is sleeved with a buffer structure, so that noise is reduced, and the structural reliability of the switching valve is ensured.
The driving mechanism 3 further comprises a spring 34, the spring 34 is sleeved on the rotating shaft 33, one end of the spring 34 abuts against the rotor, the other end of the spring 34 abuts against the end portion, far away from the valve seat 1, of the rotating slide block 2, the rotating slide block 2 is extruded towards the valve seat 1 by the spring 34, and the reliability of matching between the rotating slide block 2 and the valve seat 1 is guaranteed.
An inlet pipe is arranged at the first inlet 14, a first outlet pipe is arranged at the first outlet 11, a second outlet pipe is arranged at the second outlet 12, a third outlet pipe is arranged at the third outlet 13, the diameter of the first outlet pipe, the diameter of the second outlet pipe and the diameter of the third outlet pipe are equal, and the diameter of the inlet pipe is larger than that of the first outlet pipe.
The valve seat 1 and the driving mechanism 3 are fixedly arranged through an elastic positioning pin, so that the reliable connection between the valve seat 1 and the driving mechanism 3 (the stator component 31) is ensured.
A refrigerator comprises the switching valve.
The refrigerator comprises a compressor, a condenser and an evaporator, wherein a first inlet 14 is communicated with an exhaust port of the compressor, a first outlet 11 is communicated with the condenser, a second outlet 12 is communicated with an air return port of the compressor, and a third outlet 13 is communicated with the evaporator.
As shown in fig. 5, when the refrigerator operates in the normal cooling mode, the switching valve is in the second operation position. The first lead-out notch 22 of the rotary slide block 2 corresponds to the first lead-out port 15 of the valve seat 1, so that the refrigerant coming out of the inlet pipe connected with the first lead-in port 18 enters the first outlet pipe through the first lead-out notch 22 and the first lead-out port 15, the first outlet pipe is connected with the condenser, and the inlet pipe 7 is connected with the exhaust pipe of the compressor, so that the gas discharged from the compressor enters the condenser through the switching valve. Meanwhile, the communicating groove 21 of the rotary slide block 2 corresponds to the second outlet guide 16 and the third outlet guide 17, so that the second outlet pipe is communicated with the third outlet pipe, and the second outlet pipe and the third outlet pipe are respectively connected with the compressor air return pipe and the evaporator outlet pipe, so that the communication between the compressor air return pipe and the evaporator outlet pipe is realized. The refrigerant is compressed by the compressor to become a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant enters the condenser through the switching valve, the high-temperature high-pressure gaseous refrigerant is subjected to heat release and condensation in the condenser to become a medium-temperature high-pressure liquid refrigerant, is subjected to throttling and pressure reduction by the throttling device to enter the evaporator, is subjected to heat absorption and evaporation in the evaporator to become a low-temperature low-pressure gaseous refrigerant, passes through the switching valve once, is sucked and compressed by the compressor, and is repeated in cycles to continuously provide. The specific process is as follows: compressor → inlet pipe → first introduction port 18 → first derivation notch 22 → first derivation port 15 → first outlet pipe → condenser → throttling device → evaporator → third outlet pipe → third derivation port 17 → communication groove 21 → second derivation port 16 → second outlet pipe → compressor.
Because the evaporation temperature of the refrigerator is far lower than zero degree, wet air in the refrigerator frosts on the surface of the evaporator when flowing through the evaporator, the thicker the frost layer is, and when the thickness of the frost layer meets the defrosting entering condition, the controller is switched to a defrosting mode. As shown in fig. 6, when the refrigerator enters the defrosting mode, an excitation pulse is applied to the driving mechanism 3, the magnetic rotor 32 drives the rotating slider 2 to rotate counterclockwise through the transmission protrusion 321 and the transmission notch 24, and the switching valve is in the first working position. The second lead-out notch 23 of the rotary slide block 2 corresponds to the third lead-out port 17 of the valve seat 1, so that the refrigerant coming out of the inlet pipe connected with the first lead-in port 18 enters the third outlet pipe through the second lead-out notch 23 and the third lead-out port 17, the third outlet pipe is connected with the outlet pipe of the evaporator, the inlet pipe is connected with the exhaust pipe of the compressor, and the gas discharged from the compressor enters the evaporator through the switching valve. Meanwhile, the communicating groove 21 of the rotary slide block 2 corresponds to the first outlet guide 15 and the second outlet guide 16 respectively, so that the first outlet pipe is communicated with the second outlet pipe, and the first outlet pipe and the second outlet pipe are connected with the condenser inlet pipe and the compressor return pipe respectively, thereby realizing the communication between the condenser inlet pipe and the compressor return pipe. High-temperature refrigerant coming out of the compressor enters the evaporator after being changed by the switching valve, and the high-temperature refrigerant exchanges heat with the frost layer to realize defrosting. The high-temperature high-pressure refrigerant is released from the evaporator and condensed into a medium-temperature high-pressure liquid refrigerant, is throttled by the throttling device and decompressed to enter the condenser, absorbs heat in the condenser and evaporates to become a low-temperature low-pressure gaseous refrigerant, passes through the switching valve once and is sucked and compressed by the compressor, and the operation is repeated, so that the evaporator is continuously subjected to thermal defrosting. The specific process is as follows: compressor → inlet pipe → first introduction port 18 → second derivation notch 23 → third introduction port 17 → third outlet pipe → evaporator → throttling device → condenser → first outlet pipe → first introduction port 15 → communication groove 21 → second introduction port 16 → second outlet pipe → compressor.
When the refrigerator system meets the condition of exiting the defrosting mode, the switching valve is reversely excited, the magnetic rotor 32 drives the rotary slide block 2 to rotate clockwise through the transmission protrusion 321 and the transmission notch 24, the switching valve returns to the first working position, the refrigerator enters the normal refrigerating mode to operate, and the operation is repeated in cycles, the switching valve controls the rotation of the rotary slide block 2 by controlling the rotation of the magnetic rotor 32, so that the interconversion between the refrigerating cycle and the heating cycle (hot defrosting cycle) of the refrigerator system is realized.
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 present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (19)
1. A switching valve, characterized by: the method comprises the following steps:
the valve seat comprises a valve seat (1), wherein a first outlet (11), a second outlet (12), a third outlet (13) and a first inlet (14) are arranged on a first side surface of the valve seat (1), a first outlet guide (15), a second outlet guide (16) and a third outlet guide (17) are arranged on a second side surface of the valve seat (1), a first introducing port (18) is arranged on the peripheral side surface of the valve seat (1), the first outlet (11) is communicated with the first outlet guide (15), the second outlet (12) is communicated with the second outlet guide (16), the third outlet (13) is communicated with the third outlet guide (17), and the first inlet (14) is communicated with the first introducing port (18);
the rotating slide block (2) is abutted against the second side face, a communication groove (21), a first derivation notch (22) and a second derivation notch (23) are formed in the surface, facing the second side face, of the rotating slide block (2), and the rotating slide block (2) is provided with a first working position and a second working position;
the driving mechanism (3) is arranged on the valve seat (1) and can drive the rotary slide block (2) to switch between the first working position and the second working position;
in the first working position, the first outlet (15) and the second outlet (16) are both communicated with the communication groove (21), and the third outlet (17) and the first inlet (18) are communicated through the first outlet notch (22);
in the second operating position, the third outlet port (17) and the second outlet port (16) are both communicated with the communication groove (21), and the first outlet port (15) and the first introduction port (18) are communicated through the first discharge notch (22).
2. The switching valve according to claim 1, characterized in that: the valve seat (1) comprises a cylindrical structure, and the cylindrical end face forms the second side face.
3. The switching valve according to claim 2, characterized in that: the end part of the cylindrical shape protrudes to form a boss, the diameter of the boss is smaller than that of the cylindrical structure, the end part of the boss far away from the cylindrical structure forms the second side surface, and the first introducing port (18) is arranged on the peripheral side surface of the boss.
4. The switching valve according to claim 2 or 3, characterized in that: the first outlet (15), the second outlet (16) and the third outlet (17) are circularly distributed by taking the center of the circle of the second side surface as the center of the circle.
5. The switching valve according to claim 4, characterized in that: the included angle of the first outlet guide (15) and the second outlet guide (16) at the circle center is equal to the included angle of the second outlet guide (16) and the third outlet guide (17) at the circle center.
6. The switching valve according to claim 4, characterized in that: the first introduction port (18) is located on a peripheral side surface away from the second introduction port (16).
7. The switching valve according to claim 5, characterized in that: the cross section of the rotating sliding block (2) is circular, the cross section of the communicating groove (21) is arc-shaped, the circle center of the circular shape is used as the circle center, and the angle of the central angle occupied by the arc-shaped is equal to the angle of the included angle of the first leading-out port (15) and the second leading-out port (16) at the circle center.
8. The switching valve according to claim 7, characterized in that: the cross sections of the first derivation notch (22) and the second derivation notch (23) are both fan-shaped, and the center of the fan-shaped circle is in the same point with the center of the circle.
9. The switching valve according to claim 1, characterized in that: the switching valve further comprises an outer cover (4), and the outer cover (4) is buckled on the valve seat (1).
10. The switching valve according to claim 9, characterized in that: actuating mechanism (3) still includes stator part (31), magnetic rotor (32) and pivot (33), stator part (31) set up in the outside of dustcoat (4), magnetic rotor (32) with pivot (33) all set up in dustcoat (4), just magnetic rotor (32) set up in on pivot (33), pivot (33) or magnetic rotor (32) drive rotatory slider (2) rotate.
11. The switching valve according to claim 10, characterized in that: the middle part of the rotating slide block (2) is provided with a mounting hole, and the rotating slide block (2) is sleeved on the peripheral side of the rotating shaft (33) through the mounting hole.
12. The switching valve according to claim 10, characterized in that: the end part, far away from the valve seat (1), of the rotating sliding block (2) is provided with a transmission notch (24), a transmission protrusion (321) is arranged on the magnetic rotor (32), and the transmission protrusion (321) extends into the transmission notch (24).
13. The switching valve according to claim 10, characterized in that: the second side face is provided with a stop pin (19), the magnetic rotor (32) is provided with a first stop protrusion (322) and a second stop protrusion (323), the stop pin (19) is abutted to the first stop protrusion (322) in the first working position, and the stop pin (19) is abutted to the second stop protrusion (323) in the second working position.
14. The switching valve according to claim 13, characterized in that: and a buffer structure is sleeved on the stop pin (19).
15. The switching valve according to claim 10, characterized in that: the driving mechanism (3) further comprises a spring (34), the spring (34) is sleeved on the rotating shaft (33), one end of the spring (34) is abutted to the rotor, and the other end of the spring (34) is abutted to the end portion, far away from the valve seat (1), of the rotating slide block (2).
16. The switching valve according to claim 1, characterized in that: an inlet pipe is arranged at the first inlet (14), a first outlet pipe is arranged at the first outlet (11), a second outlet pipe is arranged at the second outlet (12), a third outlet pipe is arranged at the third outlet (13), the diameter of the first outlet pipe, the diameter of the second outlet pipe and the diameter of the third outlet pipe are equal, and the diameter of the inlet pipe is larger than that of the first outlet pipe.
17. The switching valve according to claim 1, characterized in that: the valve seat (1) and the driving mechanism (3) are fixedly arranged through an elastic positioning pin.
18. A refrigerator, characterized in that: comprising a switching valve according to any one of claims 1 to 17.
19. The refrigerator of claim 18, wherein: the refrigerator comprises a compressor, a condenser and an evaporator, wherein a first inlet (14) is communicated with an exhaust port of the compressor, a first outlet (11) is communicated with the condenser, a second outlet (12) is communicated with an air return port of the compressor, and a third outlet (13) is communicated with the evaporator.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286169.7A CN110966431A (en) | 2019-12-13 | 2019-12-13 | Switching valve and refrigerator that reliability is high |
| PCT/CN2020/113143 WO2021114750A1 (en) | 2019-12-13 | 2020-09-03 | Highly reliable switching valve and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286169.7A CN110966431A (en) | 2019-12-13 | 2019-12-13 | Switching valve and refrigerator that reliability is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110966431A true CN110966431A (en) | 2020-04-07 |
Family
ID=70034241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911286169.7A Pending CN110966431A (en) | 2019-12-13 | 2019-12-13 | Switching valve and refrigerator that reliability is high |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110966431A (en) |
| WO (1) | WO2021114750A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114750A1 (en) * | 2019-12-13 | 2021-06-17 | 珠海格力电器股份有限公司 | Highly reliable switching valve and refrigerator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001153491A (en) * | 1999-11-30 | 2001-06-08 | Saginomiya Seisakusho Inc | Motor operated selector valve and refrigerating cycle equipment |
| CN101275678B (en) * | 2007-03-29 | 2011-09-07 | 浙江三花制冷集团有限公司 | Dynamoelectric switching valve and refrigerator refrigerating cycle apparatus |
| CN101298889A (en) * | 2007-04-30 | 2008-11-05 | 浙江三花制冷集团有限公司 | Electromagnetic valve adopting stepping motor as pilot-actuated valve drive mode |
| CN202065504U (en) * | 2011-05-19 | 2011-12-07 | 浙江三花制冷集团有限公司 | Electric switch valve and refrigerator using same |
| CN203230880U (en) * | 2013-04-12 | 2013-10-09 | 广州华凌制冷设备有限公司 | Four-way valve |
| CN110966431A (en) * | 2019-12-13 | 2020-04-07 | 珠海格力电器股份有限公司 | Switching valve and refrigerator that reliability is high |
-
2019
- 2019-12-13 CN CN201911286169.7A patent/CN110966431A/en active Pending
-
2020
- 2020-09-03 WO PCT/CN2020/113143 patent/WO2021114750A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114750A1 (en) * | 2019-12-13 | 2021-06-17 | 珠海格力电器股份有限公司 | Highly reliable switching valve and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021114750A1 (en) | 2021-06-17 |
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