WO2021114750A1

WO2021114750A1 - Highly reliable switching valve and refrigerator

Info

Publication number: WO2021114750A1
Application number: PCT/CN2020/113143
Authority: WO
Inventors: 卢起彪; 朱文琪; 邓涵; 孟贺; 陆文怡; 周琳琳
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-12-13
Filing date: 2020-09-03
Publication date: 2021-06-17
Also published as: CN110966431A

Abstract

A highly reliable switching valve and a refrigerator. The switching valve comprises: a valve seat (1), a rotating sliding block (2) and a driving mechanism. In a first working position, both a first guide outlet (15) and a second guide outlet (16) communicate with a communicating groove (21), and a third guide outlet (17) and a first guide inlet (18) communicate by means of a second guide outlet gap (23). In a second working position, both the third guide outlet (17) and the second guide outlet (16) communicate with the communicating groove (21), and the first guide outlet (15) and the first guide inlet (18) communicate by means of a first guide outlet gap (22).

Description

Reliable switching valve and refrigerator

Related application

This disclosure requires the priority of the Chinese patent application filed on December 13, 2019, with the application number 201911286169.7, titled "Highly Reliable Switching Valve and Refrigerator", the full text of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the technical field of refrigeration equipment, in particular to a highly reliable switching valve and refrigerator.

Background technique

The inventor knows that all current air-cooled refrigerators have an automatic frosting function, and the commonly used defrosting method in which an electric heating tube is set below the evaporator is commonly used. The inventor realizes that it has low defrosting efficiency and high temperature rise in the freezer compartment. The problem is that there is also a defrosting method that uses the switch of the four-way valve to defrost. However, because the refrigerator uses a low-pressure refrigerant, when the ambient temperature is low, the pressure difference between the evaporation pressure and the condensing pressure is small, so the four-way valve Unable to reverse direction.

Summary of the invention

In order to solve the technical problem in the prior art that the pressure difference value is small due to the low ambient temperature and the switching defrosting cannot be performed, a highly reliable switching valve and a refrigerator are provided that use a driving mechanism to drive a rotating slider for switching.

A switching valve, including:

A valve seat, the first side of the valve seat is provided with a first outlet, a second outlet, a third outlet, and a first inlet, and the second side of the valve seat is provided with a first outlet, a second outlet, and The third outlet, the peripheral side of the valve seat is provided with a first inlet, and the first outlet is in communication with the first outlet, and the second outlet is in communication with the second outlet. The third outlet is in communication with the third outlet, and the first inlet is in communication with the first inlet;

The rotating slider abuts on the second side surface, the surface of the rotating slider facing the second side surface is provided with a communicating groove, a first leading out notch and a second leading out notch, and the rotating slider has a first A working position and a second working position;

A driving mechanism, which is arranged on the valve seat and can drive the rotary slider to switch between the first working position and the second working position;

In the first working position, the first outlet and the second outlet are both in communication with the communicating groove, and the third outlet and the first inlet pass through the first outlet Gap connection

In the second working position, the third outlet and the second outlet are both in communication with the communicating groove, and the first outlet and the first inlet pass through the first outlet The gap is connected.

In some embodiments, the valve seat includes a cylindrical structure, and the cylindrical end surface constitutes the second side surface.

In some embodiments, the end of the cylindrical shape protrudes to form a boss, the diameter of the boss is smaller than the diameter of the cylindrical structure, and the end of the boss away from the cylindrical structure forms the The second side surface, and the first introduction port is located on the peripheral side surface of the boss.

In some embodiments, the first outlet, the second outlet, and the third outlet are distributed in a circle with the center of the second side surface as the center.

In some embodiments, the angle between the first outlet and the second outlet at the center of the circle is equal to the angle between the second outlet and the third outlet at the center of the circle .

In some embodiments, the first inlet is located on a peripheral side away from the second outlet.

In some embodiments, the cross-section of the rotary slider is circular, and the cross-section of the communicating groove is an arc with the center of the circle as the center, and the angle of the central angle occupied by the arc is equal to The included angle between the first outlet and the second outlet at the center of the circle is equal.

In some embodiments, the cross-sections of the first leading-out notch and the second leading-out notch are both sector-shaped, and the center of the sector is the same as the center of the circle.

In some embodiments, the switching valve further includes an outer cover, and the outer cover is buckled on the valve seat.

In some embodiments, the driving mechanism further includes a stator component, a magnetic rotor, and a rotating shaft. The stator component is arranged on the outside of the outer cover. The magnetic rotor and the rotating shaft are both 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 slider to rotate.

In some embodiments, a mounting hole is provided in the middle of the rotating slider, and the rotating slider is sleeved on the peripheral side of the rotating shaft through the mounting hole.

In some embodiments, the end of the rotating slider away from the valve seat is provided with a transmission gap, the magnetic rotor is provided with a transmission protrusion, and the transmission protrusion extends into the transmission gap.

In some embodiments, a stop pin is provided on the second side surface, a first stop protrusion and a second stop protrusion are provided on the magnetic rotor, and in the first working position, the The stop pin abuts against the first stop protrusion, and when in the second working position, the stop pin abuts against the second stop protrusion.

In some embodiments, a buffer structure is sleeved on the stop pin.

In some embodiments, the driving mechanism further includes a spring, the spring is sleeved on the rotating shaft, and one end of the spring abuts on the rotor, and the other end abuts on the rotating slider away from the rotor. The end of the valve seat.

In some embodiments, the first inlet is provided with an inlet pipe, the first outlet is provided with a first outlet pipe, the second outlet is provided with a second outlet pipe, and the third outlet is provided with There is a third outlet pipe, 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 greater than the diameter of the first outlet pipe .

In some embodiments, the valve seat and the driving mechanism are fixedly arranged by elastic positioning pins.

A switching valve, including:

In the second working position, the third outlet and the second outlet are both in communication with the communicating groove, and the first outlet and the first inlet pass through the first outlet Gap connection

The switching valve further includes an outer cover, which is buckled on the valve seat;

An inlet pipe is provided at the first inlet, a first outlet pipe is provided at the first outlet, a second outlet pipe is provided at the second outlet, and a third outlet pipe is provided 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 greater than the diameter of the first outlet pipe;

The valve seat and the driving mechanism are fixedly arranged by an elastic positioning pin.

A refrigerator, comprising the switching valve according to any one of claims 1 to 18.

In some embodiments, the refrigerator includes a compressor, a condenser, and an evaporator, the first inlet is in communication with an exhaust port of the compressor, the first outlet is in communication with the condenser, and the first The second outlet is in communication with the air return port of the compressor, and the third outlet is in communication with the evaporator.

The switching valve and refrigerator with high reliability provided by the present disclosure adopt a driving mechanism to drive a rotating slider to switch pipelines, which overcomes the need to use the pressure difference between the evaporation pressure and the condensation pressure for switching in the prior art, and ensures that the refrigerator is in normal operation. It can be reliably switched between the working state and the defrosting state, so that the defrosting efficiency is increased, the defrosting time is reduced, and the temperature rise of the freezing chamber is smaller.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are the embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on the disclosed drawings without creative work.

FIG. 1 is a cross-sectional view of a switching valve with high reliability and a switching valve of an embodiment of a refrigerator provided by the disclosure;

2 is a top view of the valve seat of the switching valve with high reliability and the embodiment of the refrigerator provided by the disclosure;

3 is a top view of the rotary slider of the switching valve with high reliability and the embodiment of the refrigerator provided by the disclosure;

4 is a bottom view of the magnetic rotor of the switching valve and the switching valve of the embodiment of the refrigerator provided by the present disclosure;

FIG. 5 is a schematic diagram of the cooperation of the valve seat, the rotating slider and the magnetic rotor when the switching valve of the embodiment of the switching valve with high reliability and the refrigerator provided in the present disclosure is in the first working position;

6 is a schematic diagram of the cooperation of the valve seat, the rotating slider and the magnetic rotor when the switching valve with high reliability and the switching valve of the embodiment of the refrigerator provided in the present disclosure are in the second working position;

FIG. 7 is a perspective view of a valve seat of an embodiment of a highly reliable switching valve and a refrigerator provided by the disclosure; FIG.

FIG. 8 is another perspective view of the valve seat of the embodiment of the highly reliable switching valve and refrigerator provided by the disclosure; FIG.

In the picture:

1. Valve seat; 11, first outlet; 12, second outlet; 13, third outlet; 14, first inlet; 15, first outlet; 16, second outlet; 17, third outlet; 18. First inlet; 2. Rotating slider; 21. Connecting groove; 22. First outlet gap; 23. Second outlet gap; 3. Drive mechanism; 4. Cover; 31. Stator component; 32. Magnetic rotor 33. Rotating shaft; 24. Transmission gap; 321. Transmission projection; 19. Stop pin; 322. First stop projection; 323. Second stop projection; 34. Spring.

Detailed ways

In order to facilitate the understanding of the present disclosure, the present disclosure will be described in a more comprehensive manner with reference to related drawings. The preferred embodiments of the present disclosure are shown in the accompanying drawings. However, the present disclosure can be implemented in many different forms and is not limited to the implementation described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present disclosure more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. As used herein, the terms "vertical", "horizontal",

"Left", "right" and similar expressions are for illustrative purposes only, and do not mean that they are the only implementation.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the disclosure. The terminology used in the description of the disclosure herein is only for the purpose of describing specific implementation manners, and is not intended to limit the disclosure. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

The "first" and "second" mentioned in this disclosure do not represent a specific quantity and order, but are merely used to distinguish names.

The switching valve shown in Figure 1 to Figure 8 includes:

A valve seat 1. A first outlet 11, a second outlet 12, a third outlet 13 and a first inlet 14 are provided on the first side of the valve seat 1, and a first guide is provided on the second side of the valve seat 1. Outlet 15, second outlet 16 and third outlet 17, the peripheral side of the valve seat 1 is provided with a first inlet 18, and the first outlet 11 communicates with the first outlet 15 to form a first Communicating passage, the second outlet 12 communicates with the second outlet 16 to form a second communicating passage, the third outlet 13 communicates with the third outlet 17 to form a third communicating passage, the first inlet 14 communicates with the first inlet 18 to form a fourth communication passage, the first communication passage, the second communication passage, the third communication passage, and the fourth communication passage form four passages connecting the inside and the outside of the switching valve for refrigerant The flow of

The rotating slider 2 abuts on the second side surface, and the surface of the rotating slider 2 facing the second side surface is provided with a communicating groove 21, a first outlet notch 22, and a second outlet notch 23, and the 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 slider 2 to rotate so as 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 in communication with the communicating groove 21, and the third outlet 17 and the first inlet 18 pass The first outlet gap 22 is in communication; the refrigerant enters the first inlet 14 from the first inlet 18, communicates with the first outlet gap 22, and flows out of the switching valve from the third outlet 17 for heat exchange, and the heat exchange is completed Then it flows in from the first outlet port 15 and passes through the communication groove 21 and then flows out of the switching valve from the second outlet port 16 to form the first working state;

In the second working position, the third outlet 17 and the second outlet 16 are both in communication with the communicating groove 21, and the first outlet 15 and the first inlet 18 pass The first outlet gap 22 is connected, the refrigerant enters the first inlet 14 through the first inlet 18, and is connected through the second outlet gap 23, and flows out of the switching valve from the first outlet 15 for heat exchange, and the heat exchange is completed Then, it flows in from the third outlet 17 and passes through the communicating groove 21 and then flows out of the switching valve from the second outlet 16 to form a second working state;

In some embodiments, the valve seat 1 includes a cylindrical structure, and the cylindrical end surface constitutes the second side surface, that is, the second side surface is a flat surface, which facilitates access to the first outlet 15 and the second outlet 16 The processing of the third outlet 17 and the third outlet 17 ensure that the rotary slider 2 can fit and slide on the second side well, thereby ensuring that an absolute seal is formed between the outlets that should not be connected, and the reliability of the switching valve is ensured.

In some embodiments, the end of the cylindrical shape protrudes to form a boss, the diameter of the boss is smaller than the diameter of the cylindrical structure, and the end of the boss away from the cylindrical structure forms the The second side surface, and the first inlet 18 is located on the peripheral side of the boss, which facilitates the processing of the first inlet 18, and at the same time, the boss is used to increase the thickness of the valve seat 1 and reduce the processing difficulty of the valve seat 1. .

In some embodiments, the first outlet 15, the second outlet 16, and the third outlet 17 are distributed in a circle with the center of the second side as the center.

In some embodiments, the angle between the first outlet 15 and the second outlet 16 at the center of the circle and the angle between the second outlet 16 and the third outlet 17 at the center of the circle The included angles are equal, so that when the rotary slider 2 rotates, only the angle equal to the included angle is needed to make the first outlet 15 communicate with the second outlet 16 but not with the third outlet 17, or It is the third outlet 17 that communicates with the second outlet 16 but not the first outlet 15, ensuring the reliability of the switching valve.

In some embodiments, the first inlet 18 is located on the peripheral side away from the second outlet 16 to ensure the strength of the valve seat 1 while preventing interference between the communication channels.

In some embodiments, the cross-section of the rotating slider 2 is circular, the diameter of the rotating slider 2 is smaller than the diameter of the valve seat 1, and the cross-section of the communicating groove 21 is in the shape of the circle. The center of the circle is an arc of the center, and the angle of the center angle occupied by the arc is equal to the included angle of the first outlet 15 and the second outlet 16 at the center of the circle.

In some embodiments, the cross-sections of the first outlet notch 22 and the second outlet notch 23 are fan-shaped, and the center of the fan-shaped circle is the same as the center of the circle, which facilitates the introduction of refrigerant from the first Port 18 flows out.

In some embodiments, the switching valve further includes an outer cover 4, which is buckled on the valve seat 1, and the refrigerant flows into the outer cover 4 through the first inlet 18, and is discharged through a fan-shaped notch. Diversion to the corresponding diversion port for outflow.

In some embodiments, the drive mechanism 3 further includes a stator component 31, a magnetic rotor 32, and a rotating shaft 33. The stator component 31 is arranged on the outside of the housing 4, and the magnetic rotor 32 and the rotating shaft 33 are both arranged. In the outer cover 4, and the magnetic rotor 32 is arranged on the rotating shaft 33, the rotating shaft 33 or the magnetic rotor 32 drives the rotating slider 2 to rotate, when an excitation pulse is given to the driving mechanism 3 At this time, the magnetic rotor 32 and the rotating shaft 33 will rotate, so that the rotating slider 2 can be driven to rotate to complete the switching between the first working position and the second working position.

In some embodiments, a mounting hole is provided in the middle of the rotating slider 2, and the rotating slider 2 is sleeved on the peripheral side of the rotating shaft 33 through the mounting hole, and the mounting hole and the rotating shaft 33 are used to cooperate with each other. The rotation of the rotating slider 2.

In some embodiments, the end of the rotary slider 2 away from the valve seat 1 is provided with a transmission notch 24, the magnetic rotor 32 is provided with a transmission protrusion 321, and the transmission protrusion 321 extends into the seat. In the transmission gap 24, the rotation of the rotary sliding block 2 is realized by the snap-fitting relationship between the transmission protrusion 321 and the transmission gap 24.

In some embodiments, a stop pin 19 is provided on the second side surface, a first stop protrusion 322 and a second stop protrusion 323 are provided on the magnetic rotor 32, and in the first working position When the stop pin 19 is in contact with the first stop protrusion 322, when in the second working position, the stop pin 19 is in contact with the second stop protrusion 323, using the stop pin 19. The first stop protrusion 322 and the second stop protrusion 323 limit the rotation angle of the magnetic rotor 32, thereby limiting the rotation angle of the rotary slider 2, and ensure the reliability of switching of the switching valve.

In some embodiments, a buffer structure is sleeved on the stop pin 19 to reduce noise and ensure the structural reliability of the switching valve.

In some embodiments, the driving mechanism 3 further includes a spring 34, the spring 34 is sleeved on the rotating shaft 33, and one end of the spring 34 abuts on the rotor, and the other end abuts on the rotor. The rotating slider 2 is far away from the end of the valve seat 1, and the rotating slider 2 is squeezed toward the valve seat 1 by a spring 34 to ensure the reliability of the fit between the rotating slider 2 and the valve seat 1.

In some embodiments, the first inlet 14 is provided with an inlet pipe, the first outlet 11 is provided with a first outlet pipe, the second outlet 12 is provided with a second outlet pipe, and the third A third outlet pipe is provided at the 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 diameter of the outlet pipe.

In some embodiments, the valve seat 1 and the driving mechanism 3 are fixedly arranged by elastic positioning pins to ensure a reliable connection between the valve seat 1 and the driving mechanism 3 (stator component 31).

A refrigerator includes the above-mentioned switching valve.

The refrigerator includes a compressor, a condenser, and an evaporator. The first inlet 14 is in communication with the exhaust port of the compressor, the first outlet 11 is in communication with the condenser, and the second outlet 12 is in communication with the condenser. The air return port of the compressor is in communication, and the third outlet 13 is in communication with the evaporator.

As shown in Fig. 5, when the refrigerator operates in the normal cooling mode, the switching valve is in the second working position. The first outlet notch 22 of the rotary slider 2 corresponds to the first outlet 15 of the valve seat 1, so that the refrigerant from the inlet pipe connected to the first inlet 18 passes through the first outlet notch 22 and the first outlet 15 Enter the first outlet pipe, and the first outlet pipe is connected to the condenser, and the inlet pipe 7 is connected to the compressor exhaust pipe, so that the gas discharged from the compressor enters the condenser through the switching valve. At the same time, the communication groove 21 of the rotary slider 2 corresponds to the second outlet 16 and the third outlet 17, so that the second outlet pipe and the third outlet pipe communicate with each other, and the second outlet pipe and the third outlet pipe are respectively connected with the compressor The return air pipe of the machine and the outlet pipe of the evaporator are connected, so as to realize the communication between the return air pipe of the compressor and the outlet pipe of the evaporator. After the refrigerant is compressed by the compressor, it becomes a high temperature and high pressure gaseous refrigerant that enters the condenser through the switching valve. The high temperature and high pressure gaseous refrigerant heats and condenses in the condenser into a medium temperature and high pressure liquid refrigerant, and enters the evaporator through the throttling device. The evaporator absorbs heat and evaporates, and becomes a low-temperature and low-pressure gaseous refrigerant. It passes through the switching valve once again, and then is sucked and compressed by the compressor, and the cycle continues to provide cooling to the refrigerator. The specific process is: compressor → inlet pipe → first inlet 18 → first outlet gap 22 → first outlet 15 → first outlet pipe → condenser → throttling device → evaporator → third outlet pipe → third Lead outlet 17→communication groove 21→second lead outlet 16→second outlet pipe→compressor.

Since the evaporation temperature of the refrigerator is far below zero, the humid air in the refrigerator forms frost on the surface of the evaporator when it flows through the evaporator. The thicker the frost layer becomes. When the thickness of the frost layer meets the defrost entry conditions, the controller switches to the defrost mode . As shown in Figure 6, when the refrigerator enters the defrosting mode, an excitation pulse is applied to the driving mechanism 3. The magnetic rotor 32 drives the rotary slider 2 to rotate counterclockwise through the transmission protrusion 321 and the transmission gap 24, and the switching valve is in the first operation. position. The second outlet notch 23 of the rotary slider 2 corresponds to the third outlet 17 of the valve seat 1, so that the refrigerant from the inlet pipe connected to the first inlet 18 passes through the second outlet notch 23 and the third outlet 17 Enter the third outlet pipe, and the third outlet pipe is connected with the evaporator outlet pipe, and the inlet pipe is connected with the compressor exhaust pipe, so that the gas discharged from the compressor enters the evaporator through the switching valve. At the same time, the communication groove 21 of the rotary slider 2 corresponds to the first outlet 15 and the second outlet 16 respectively, so that the first outlet pipe is connected with the second outlet pipe, and the first outlet pipe and the second outlet pipe are respectively connected with the condensing The inlet pipe of the condenser and the return pipe of the compressor are connected, so as to realize the communication between the inlet pipe of the condenser and the return pipe of the compressor. The high-temperature refrigerant from the compressor passes through the switching valve and enters the evaporator. The high-temperature refrigerant exchanges heat with the frost layer to achieve defrosting. The high-temperature and high-pressure refrigerant in the evaporator heats up and condenses into a medium-temperature and high-pressure liquid refrigerant, and enters the condenser through the throttling device to reduce the pressure, absorb heat and evaporate in the condenser, and become a low-temperature and low-pressure gaseous refrigerant. Then it is sucked and compressed by the compressor, and the cycle continues to defrost the evaporator with hot gas. The specific process is: compressor → inlet pipe → first inlet 18 → second outlet gap 23 → third outlet 17 → third outlet pipe → evaporator → throttling device → condenser → first outlet pipe → first Lead outlet 15→communication groove 21→second lead outlet 16→second outlet pipe→compressor.

When the refrigerator system satisfies the exit defrosting mode, the switching valve is reversely excited. The magnetic rotor 32 drives the rotary slider 2 to rotate clockwise through the transmission protrusion 321 and the transmission gap 24, and the switching valve returns to the first working position. Entering the normal refrigeration mode operation, the cycle repeats, the switching valve controls the rotation of the rotary slider 2 by controlling the rotation of the magnetic rotor 32, so as to realize the mutual conversion between the refrigeration cycle and the heating cycle (hot gas defrosting cycle) of the refrigerator system.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation manners of the present disclosure, and the descriptions are more specific and detailed, but they should not be understood as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can be made, and these all fall within the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent should be subject to the appended claims.

Claims

A switching valve is characterized in that it comprises:

A valve seat (1), the 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 The second side of the valve seat (1) is provided with a first outlet (15), a second outlet (16) and a third outlet (17), and the peripheral side of the valve seat (1) is provided with a first inlet Port (18), and the first outlet (11) is in communication with the first outlet (15), the second outlet (12) is in communication with the second outlet (16), and the third The outlet (13) is in communication with the third outlet (17), and the first inlet (14) is in communication with the first inlet (18);

The rotating slider (2) abuts on the second side surface, and the surface of the rotating slider (2) facing the second side surface is provided with a communicating groove (21), a first outlet notch (22), and a second side surface. Two lead-out gaps (23), and the rotary sliding block (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 slider (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 in communication with the communicating groove (21), and the third outlet (17) and The first introduction port (18) is connected through the first outlet gap (22);

In the second working position, the third outlet (17) and the second outlet (16) are both in communication with the communicating groove (21), and the first outlet (15) and The first inlet (18) is communicated with the first outlet gap (22).
The switching valve according to claim 1, wherein the valve seat (1) comprises a cylindrical structure, and the cylindrical end surface constitutes the second side surface.
The switching valve according to claim 2, wherein the end of the cylindrical shape protrudes to form a boss, the diameter of the boss is smaller than the diameter of the cylindrical structure, and the boss is far away from the cylinder The end of the shaped structure forms the second side surface, and the first inlet (18) is located on the peripheral side surface of the boss.
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 based on the second The center of the side is circularly distributed.
The switching valve according to claim 4, characterized in that: the angle between the first outlet (15) and the second outlet (16) at the center of the circle and the second outlet (16) ) Is equal to the included angle of the third outlet (17) at the center of the circle.
The switching valve according to claim 4, characterized in that the first introduction port (18) is located on a peripheral side away from the second introduction port (16).
The switching valve according to claim 5, characterized in that: the cross section of the rotary slider (2) is circular, and the cross section of the communicating groove (21) is an arc centered on the center of the circle. And the central angle occupied by the arc is equal to the included angle between the first outlet (15) and the second outlet (16) at the center of the circle.
The switching valve according to claim 7, characterized in that: the cross-sections of the first leading-out notch (22) and the second leading-out notch (23) are both fan-shaped, and the center of the fan-shaped circle is the same as that of the circle. The centers of the circles are the same.
The switching valve according to claim 1, wherein the switching valve further comprises an outer cover (4), and the outer cover (4) is buckled on the valve seat (1).
The switching valve according to claim 9, characterized in that: the drive mechanism (3) further comprises a stator component (31), a magnetic rotor (32) and a rotating shaft (33), and the stator component (31) is arranged at the On the outer side of the outer cover (4), the magnetic rotor (32) and the rotating shaft (33) are both arranged in the outer cover (4), and the magnetic rotor (32) is arranged on the rotating shaft (33) , The rotating shaft (33) or the magnetic rotor (32) drives the rotating slider (2) to rotate.
The switching valve according to claim 10, characterized in that: a mounting hole is provided in the middle of the rotating sliding block (2), and the rotating sliding block (2) is sleeved on the rotating shaft (33) through the mounting hole. ) On the side of the week.
The switching valve according to claim 10, characterized in that: the end of the rotary slider (2) away from the valve seat (1) is provided with a transmission gap (24), and the magnetic rotor (32) is provided with a transmission gap (24). There is a transmission protrusion (321), and the transmission protrusion (321) extends into the transmission gap (24).
The switching valve according to claim 10, wherein a stop pin (19) is provided on the second side surface, and a first stop protrusion (322) and a second stop protrusion (322) are provided on the magnetic rotor (32). 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).
The switching valve according to claim 13, wherein a buffer structure is sleeved on the stop pin (19).
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), and the spring ( One end of 34) abuts on the rotor, and the other end abuts on the end of the rotating slider (2) away from the valve seat (1).
The switching valve according to claim 1, characterized in that: the first inlet (14) is provided with an inlet pipe, the first outlet (11) is provided with a first outlet pipe, and the second outlet ( 12) is provided with a second outlet pipe, the third outlet (13) is provided with a third outlet pipe, the diameter of the first outlet pipe, the diameter of the second outlet pipe and the third outlet pipe The diameters of are equal, and the diameter of the inlet pipe is greater than the diameter of the first outlet pipe.
The switching valve according to claim 1, characterized in that: the valve seat (1) and the driving mechanism (3) are fixedly arranged by an elastic positioning pin.
A switching valve is characterized in that it comprises:

A valve seat (1), the 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 The second side of the valve seat (1) is provided with a first outlet (15), a second outlet (16) and a third outlet (17), and the peripheral side of the valve seat (1) is provided with a first inlet Port (18), and the first outlet (11) is in communication with the first outlet (15), the second outlet (12) is in communication with the second outlet (16), and the third The outlet (13) is in communication with the third outlet (17), and the first inlet (14) is in communication with the first inlet (18);

The rotating slider (2) abuts on the second side surface, and the surface of the rotating slider (2) facing the second side surface is provided with a communicating groove (21), a first outlet notch (22), and a second side surface. Two lead-out gaps (23), and the rotary sliding block (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 slider (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 in communication with the communicating groove (21), and the third outlet (17) and The first introduction port (18) is connected through the first outlet gap (22);

In the second working position, the third outlet (17) and the second outlet (16) are both in communication with the communicating groove (21), and the first outlet (15) and The first introduction port (18) is connected through the first outlet gap (22);

The switching valve also includes an outer cover (4), which is buckled on the valve seat (1);

The first inlet (14) is provided with an inlet pipe, the first outlet (11) is provided with a first outlet pipe, the second outlet (12) is provided with a second outlet pipe, and the third The outlet (13) is provided with a third outlet pipe, 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 the diameter of the third outlet pipe. The diameter of the first outlet pipe;

The valve seat (1) and the driving mechanism (3) are fixedly arranged by elastic positioning pins.
A refrigerator, characterized by comprising the switching valve according to any one of claims 1 to 18.
The refrigerator according to claim 19, characterized in that: the refrigerator comprises a compressor, a condenser and an evaporator, the first inlet (14) is in communication with the exhaust port of the compressor, and the first outlet (11) is in communication with the condenser, the second outlet (12) is in communication with the air return port of the compressor, and the third outlet (13) is in communication with the evaporator.