JPH0571650A - Valve system - Google Patents

Abstract

PURPOSE:To provide a valve system that is capable of reducing the number of individual part items in a coolant circuit, of simplifying a pipeline and of promoting the miniaturization of the coolant circuit and a reduction in cost. CONSTITUTION:This valve system is made up of installing a valve body 10, a first movable valve element 11, a second movable valve element 12, a movable rod 13 and an energizing means 14. With this constitution, it takes charge of the same function as a four-way selector valve, a three-way selector valve piped with each other and a capillary tube.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device used in a refrigerant circuit such as an air conditioner and a refrigerator, and more particularly to a valve device used in a refrigerant circuit having a heat accumulator and a cooler.

[0002]

2. Description of the Related Art Conventionally, a refrigerant circuit having a heat accumulator and a cooler has been provided as a refrigerant circuit of a refrigerator or the like. In this type of refrigerant circuit, three operation patterns, that is, a cool storage / cooling operation pattern in which a cool storage device cools a cool storage agent (for example, water containing potassium chloride and ethanol mainly) is cooled. A cooling operation pattern in which the regenerator of the regenerator is not cooled but is cooled by the cooler when the regenerator of the regenerator is completely frozen or when the inside of the refrigerator is rapidly cooled, and
The ice storage / cooling operation pattern is performed such that the regenerator of the heat accumulator is slightly warmed and cooled by the cooler.

The conventional refrigerant circuit of this type is specifically
For example, it was configured as shown in FIG. That is,
In FIG. 5, 1 is a heat storage device, 2 is a cooling device, and these are arranged in a refrigerator. Further, 3 is a compressor, 4 is a condenser, 5 is a check valve, 6 is a four-way switching valve, 7 is a three-way switching valve, and 8 and 9 are capillary conduits, which are connected as shown in FIG. ..

According to the conventional refrigerant circuit shown in FIG. 5,
Each of the operation patterns is performed by switching the four-way switching valve 6 and the three-way switching valve 7. That is, in the case of the cold storage / cooling operation pattern, the four-way switching valve 6 and the three-way switching valve 7 are switched so that the refrigerant flows as shown by the solid arrow in FIG.
As a result, the refrigerant flows in the path of the compressor 3 → the condenser 4 → the four-way switching valve 6 → the capillary conduit 8 → the heat storage 1 → the check valve 5 → the three-way switching valve 7 → the cooler 2 → the compressor 3 to store the cold storage. -The cooling operation pattern is achieved. Further, in the case of the cooling operation pattern, the four-way switching valve 6 and the three-way switching valve 7 are switched so that the refrigerant flows as indicated by the broken line arrow in FIG. As a result, the refrigerant flows through the path of compressor 3 → condenser 4 → four-way switching valve 6 → capillary conduit 9 → cooler 2 → compressor 3 to achieve the cooling operation pattern. Further, in the case of the ice-freezing / cooling operation pattern, the refrigerant is allowed to flow as shown by the arrow of the one-dot chain line in FIG.
The four-way switching valve 6 and the three-way switching valve 7 are switched. As a result, the refrigerant changes from the compressor 3 to the condenser 4 to the four-way switching valve 6 to the regenerator 1 to the check valve 5 to the three-way switching valve 7.
→ Capillary conduit 9 → Cooler 2 → Compressor 3 flows, and the above-mentioned deicing / cooling operation pattern is achieved.

[0005]

In the above-mentioned conventional refrigerant circuit, although the required function can be achieved as described above, the four-way switching valve 6, the three-way switching valve 7, the capillary conduit 8 and the individual components are provided as individual parts. 9 is used to configure the circuit,
Therefore, there is no choice but to pipe between these individual parts,
The circuit structure is complicated, leading to an increase in size and inevitably increasing costs. The present invention has been made in view of such circumstances, by using as a component of a refrigerant circuit having a heat accumulator and a cooler, it is possible to reduce the number of individual parts in the refrigerant circuit and simplify piping, An object of the present invention is to provide a valve device that can reduce the size and cost of the refrigerant circuit.

[0006]

In order to solve the above problems, the present invention comprises a valve body, a first movable valve body, a second movable valve body, a movable rod, and a biasing means. It has a different configuration. The valve body has therein first to fifth compartments that are sequentially connected, and the first to fourth compartments are sequentially arranged between adjacent compartments of the first to fifth compartments. Ports are communicated with each other through the communication holes, and the ports are communicated with the first compartment, the second compartment, the fourth compartment, and the fifth compartment, respectively.

The first movable valve body is arranged in the second compartment and has a first insertion hole of a predetermined depth at the center thereof.
The first spring is used to abut the periphery of the first communication hole on the side of the second compartment so as to close the first communication hole except the portion of the first insertion hole. It is biased toward the side of one compartment.

The second movable valve element is arranged in the fourth compartment and has a second insertion hole of a predetermined depth at the center thereof.
The fourth spring is contacted with the periphery of the fourth communication hole on the side of the fourth compartment, and the fourth spring is closed by the second spring so as to close the fourth communication hole except the portion of the second insertion hole. It is urged in the direction of the five compartments.

The movable rod is disposed inside the valve body so as to penetrate the first to fourth communication holes and the first and second insertion holes, respectively, and to be movable in the penetrating direction. And forming a first communication passage having a small cross-sectional area with the inner wall of the first insertion hole, and forming a second communication passage having a small cross-sectional area with the inner wall of the second insertion hole. A first valve body that is formed and is located at the first compartment side position relative to the first movable valve body, and is located at the fifth compartment side position relative to the second movable valve body. A second valve body is provided, a third valve body located in the third compartment is provided, and the third valve body is biased toward the first compartment side by a third spring.

The urging means applies a non-urging state to the movable rod without applying an urging force, a first urging state in which a first urging force is applied in the fifth compartment side direction, and the fifth urging state. It is possible to switch to each state of the second urging state that applies the second urging force in the compartment side direction.

The arrangement of the first to third valve bodies on the movable rod is preferably as follows. That is, according to the movement of the movable rod, the third valve body comes into contact with the periphery of the second communication hole to close the second communication hole in a first operating state, in which the third valve body is moved to the first operation state. A second operating state in which both the second and third communication holes are opened without abutting on the periphery of the second and third communication holes, and the third valve body is disposed around the third communication hole. The third valve body is arranged so as to come into contact with each other to be in each of the third operating states in which the third communication hole is closed. Then, in the first operating state, the first valve body is in contact with the first movable valve body around the first communication hole by the urging force of the first spring. The first communication passage is opened without abutting the periphery of the one insertion hole, the second valve body abuts the periphery of the second insertion hole to close the second communication passage, and The first and second valve bodies are arranged so that the second movable valve body is moved toward the first compartment to open the fourth communication hole. Moreover, in the second operating state, the first movable valve element is in contact with the first communication hole around the first communication hole by the urging force of the first spring, and the first valve element moves to the first movable state. In a state in which the second movable valve body is in contact with the periphery of the first insertion hole to close the first communication passage, and the second movable valve body is in contact with the periphery of the fourth communication hole by the urging force of the second spring. The first and second valve bodies are arranged so that the second valve body does not come into contact with the periphery of the second insertion hole and opens the second communication passage. Moreover, in the third operating state, the first valve body abuts the periphery of the first insertion hole to close the first communication passage, and the first movable valve body is moved to the fifth state. The second movable valve element is moved in the compartment side direction to open the first communication hole, and the second movable valve body is in contact with the periphery of the fourth communication hole by the urging force of the second spring. The first and second valve bodies are arranged so that the second valve body does not come into contact with the periphery of the second insertion hole and opens the second communication passage.

The urging force of the third spring is larger than the urging force of the second spring, and the total of the first urging force and the urging force of the third spring is the same as that of the first spring. It is desirable to set it so that it is smaller than the biasing force and the total of the biasing force of the second spring and the biasing force of the third spring is larger than the biasing force of the first spring.

The biasing means may be composed of an iron core fixed to the movable rod and two electrically independent solenoids capable of applying an electromagnetic force to the iron core.

[0014]

According to the present invention, although it is a single valve device,
The functions of the four-way switching valve, the three-way switching valve, and the respective capillary tubes, which are connected to each other in the refrigerant circuit having the conventional heat accumulator and cooler, are provided. Therefore, by using the valve device according to the present invention as a component part of a refrigerant circuit having a heat accumulator and a cooler, it is possible to reduce the number of individual parts in the refrigerant circuit and simplify the piping. It is possible to reduce the size and cost.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings. 1 is a vertical sectional view showing a first operating state of a valve device A according to an embodiment of the present invention, FIG. 2 is a vertical sectional view showing a second operating state of the valve device A, and FIG. 3 is the valve device A. FIG. 8 is a vertical sectional view showing a third operating state of FIG.

In these drawings, 10 is a valve body, and 1 is
Reference numeral 1 is a first movable valve body, 12 is a second movable valve body, 13 is a movable rod, and 14 is an urging means, which constitute the valve device A.

The valve body 10 has therein first to fifth compartments 21, 22, 23, 24, 25 which are successively arranged. Each of the first to fifth compartments 21, 22, 2
Adjacent compartments 3, 24 and 25 are sequentially communicated with each other through first to fourth communication holes 31, 32, 33 and 34, respectively. The first compartment 21, the second compartment 22,
Ports 41, 42, 44 and 45 are connected to the fourth compartment 24 and the fifth compartment 25, respectively.
In the illustrated embodiment, the first compartment 21, the first communication hole 31, and the port 41 are integrated to form a single columnar space, but other compartments are used. Room,
They may be formed so as to be clearly distinguished from each other, such as communication and ports, and their shapes and the like are not particularly limited.

The first movable valve element 11 is arranged in the second compartment 22. The first movable valve body 11 has a first insertion hole 51 having a predetermined depth (horizontal length in FIG. 1) at the center thereof. Further, the first movable valve body 11 abuts on the periphery of the first communication hole 31 on the side of the second compartment 22 to form the first insertion hole 51.
So as to close the first communication hole 31 except the part
The first spring 61 urges the first compartment 21 toward the first compartment 21 (to the left in FIG. 1).

The second movable valve body 12 is arranged in the fourth compartment 24. Then, the second movable valve body 12 has a second insertion hole 52 having a predetermined depth in the center thereof, and abuts on the periphery of the fourth communication hole 34 on the side of the fourth compartment 24. The second spring 62 is directed toward the fifth compartment 25 side (to the right in FIG. 1) so as to contact and close the fourth communication hole 34 except for the second insertion hole 52. ).

The movable rod 13 penetrates through the first to fourth communication holes 31, 32, 33, 34 and the first and second insertion holes 51, 52, respectively, and their penetrating directions (in FIG. 1). Is arranged inside the valve body 10 so as to be movable in the left-right direction. And the movable rod 1
3 forms a first communication passage 71 having a small cross-sectional area with the inner wall of the first insertion hole 51, and a second cross-section having a small cross-sectional area with the inner wall of the second insertion hole 52. To form a communication passage 72. Further, the movable rod 13 has a first valve body 81 located at a position (the left side position in FIG. 1) on the first compartment 21 side with respect to the first movable valve body 11.
Is provided, and the second valve body 82 located at the position (the right side position in FIG. 1) on the fifth compartment 25 side with respect to the second movable valve body 12 is provided, and the third compartment A third valve body 83 located inside 23 is provided. Further, the movable rod 13 is urged by a third spring 63 toward the first compartment 21 side (leftward in FIG. 1).

The urging means 14 comprises the movable rod 13
In the non-biased state in which no biasing force is applied, the fifth compartment 2
5 side direction (right direction in FIG. 1) of the first biasing state that applies the first biasing force and the second biasing state that applies the second biasing force in the fifth compartment side direction. It is possible to switch to each state.

In the illustrated embodiment, the biasing means 14 is
Specifically, an iron core 91 fixed to the right end of the movable rod 13 and two electrically independent solenoids 9 capable of applying electromagnetic force to the iron core 91 in the right direction in FIG.
2, 93. However, the urging means 14 is not limited to this, and for example, a single solenoid is used instead of the two solenoids 92 and 93 so that currents of different magnitudes can flow through the solenoids. Alternatively, the right end of the movable rod may be led out from the valve body 10 so that a mechanical biasing force can be directly applied to that portion. In the illustrated embodiment, the solenoids 92 and 9 are
When the energization of No. 3 is cut off, the non-energized state is set, when only the solenoid 92 is energized, the first energized state is set, and when the solenoids 92 and 93 are energized, the second energized state is set. ing.

In the case of the embodiment shown in the drawings, the first to third valve bodies 81 and 8 of the movable rod 13 are provided.
The layout of 2,83 is as follows.

That is, as the movable rod 13 moves in the left-right direction in FIG. 1, the third valve body 83 comes into contact with the periphery of the second communication hole 32 and the second communication hole 32.
In the first operating state (state shown in FIG. 1), the third valve body 83 does not abut the periphery of the second and third communication holes 32, 33, and the second and third communication holes A second operation state (state shown in FIG. 2) in which both 32 and 33 are opened, and the third valve body 83 is brought into contact with the periphery of the third communication hole 33 to open the third communication hole 33. Close Third operating state (Fig. 3
(State shown in FIG. 2) so that the third valve body 8
3 are arranged. Then, the first operating state (see FIG.
(State shown in FIG. 2), the first movable valve body 11 is provided with the first spring 61 around the first communication hole 31.
The first valve body 8 in the state of being abutted by the urging force of
1 does not contact the periphery of the first insertion hole 51 and opens the first communication passage 71, and the second valve body 82 contacts the periphery of the second insertion hole 52 and the Second passage 72
And the second movable valve body 12 is moved toward the side of the first compartment 21 to open the fourth communication hole 34, the first and second valve bodies 81, 82 are closed. It is arranged. Moreover, in the second operating state (the state shown in FIG. 2), the first movable valve body 11 is in contact with the periphery of the first communication hole 31 by the urging force of the first spring 61. In, the first valve body 81 abuts the periphery of the first insertion hole 51 to close the first communication passage 71, and the second movable valve body 12 surrounds the fourth communication hole 34. When the second valve body 82 does not come into contact with the periphery of the second insertion hole 52 in the state where the second valve body 82 comes into contact with the second insertion passage 52 due to the urging force of the second spring 62,
The first and second valve bodies 81 and 82 are arranged so as to open 2. Moreover, in the third operating state (the state shown in FIG. 3), the first valve body 81 abuts the periphery of the first insertion hole 51 to close the first communication passage 71 and the first communication passage 71. The one movable valve body 11 is moved in the direction toward the fifth compartment 25 to open the first communication hole 31, and the second movable valve body 12 is provided around the fourth communication hole 34. The second valve body 82 does not come into contact with the periphery of the second insertion hole 52 in the state of being brought into contact with the urging force of the second spring 62, and the second communication passage 72 is opened. First and second valve bodies are arranged.

In the embodiment shown in the drawings, the biasing force of the third spring 63 is larger than the biasing force of the second spring 62, and the first biasing force and the first biasing force of the biasing means 14 are The total of the biasing force of the third spring 63 is smaller than the biasing force of the first spring 61, and the total of the second biasing force of the biasing means 14 and the biasing force of the third spring 63 is the above-mentioned. First spring 61
It is set to be larger than the urging force of.

The valve device A having the above-described structure is, for example, piped as shown in FIG. 4 to form a refrigerant circuit having exactly the same function as the conventional refrigerant circuit shown in FIG. In addition,
4, the same components as those in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.

According to the refrigerant circuit shown in FIG. 4, first, in the case of the cold storage / cooling operation pattern, the energization of the solenoids 92 and 93 of the valve device A is cut off. As a result, the valve device A enters the first operating state shown in FIG. Therefore, as shown by a solid arrow in FIG. 1, the port 42 → the second compartment 22 → the first communication passage 71 → the first compartment 21 →
In the path of the port 41, the ports 42 and 41 open via the first communication passage 71 (corresponding to the capillary conduit 8 in FIG. 5), and the port 44 → the fourth compartment 24 → the fourth communication. In the path of hole 34 → fifth compartment 25 → port 45, port 4
Open between 4 and 45. Therefore, according to the refrigerant circuit shown in FIG. 4, when the energization of the solenoids 92 and 93 is cut off,
A cold storage / cooling operation pattern is achieved in exactly the same manner as the refrigerant circuit shown in FIG.

According to the refrigerant circuit shown in FIG. 4, the solenoid 9 of the valve device A is used in the cooling operation pattern.
Only 2 are energized. As a result, the valve device A enters the second operating state shown in FIG. Therefore, as indicated by a dashed arrow in FIG. 2, the port 42 → the second compartment 22 → the second communication hole 32 → the third compartment 23 → the third communication hole 33 → the fourth compartment. 24 → second communication passage 72 → fifth compartment 25 →
In the path of the port 45, the port 42 and the port 45 are opened via the second communication passage 72 (corresponding to the capillary tube 9 in FIG. 5). Therefore, according to the refrigerant circuit shown in FIG. 4, when only the solenoid 92 is energized, the cooling operation pattern is achieved just like the refrigerant circuit shown in FIG.

Further, according to the refrigerant circuit shown in FIG. 4, the solenoids 92 and 93 of the valve device A are energized in the case of the ice removing / cooling operation pattern. As a result, the valve device A enters the third operating state shown in FIG. Therefore, as indicated by the one-dot chain line arrow in FIG. 3, the port 42 → the second compartment 22 → the first communication hole 31 → the first compartment 21 → the port 41 is routed between the ports 42 and 41. Opens and again
The port 44 → the fourth compartment 24 → the second communication passage 72 → the fourth communication hole 34 → the fifth compartment 25 → the port 45, and the second communication passage 72 ( Figure 5
Via the inner capillary tube 9). Therefore, in FIG.
According to the refrigerant circuit shown in FIG. 5, when only the solenoids 92 and 93 are energized, just like the refrigerant circuit shown in FIG.
Ice-freezing / cooling operation pattern is achieved.

As is apparent from the above description, the valve device A according to the embodiment of the present invention having the above-described structure has the four-way switching valve 6 and the three-way switching valve arranged in the conventional refrigerant circuit shown in FIG. It functions as the valve 7 and the respective capillary conduits 8 and 9. Therefore, as can be seen from the comparison between FIG. 4 and FIG. 5, by using the valve device A as a part of the components of the refrigerant circuit having the heat storage device 1 and the cooler 2, the number of individual components in the refrigerant circuit is increased. Is reduced and piping becomes easier,
It is possible to reduce the size and cost of the refrigerant circuit.

[0031]

According to the present invention, by using it as a part of the components of a refrigerant circuit having a heat accumulator and a cooler, the number of individual parts in the refrigerant circuit is reduced and the piping is simplified, and the refrigerant circuit is simplified. It is possible to obtain the effect that the miniaturization and cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a first operating state of a valve device according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a second operating state of the valve device.

FIG. 3 is a longitudinal sectional view showing a third operating state of the valve device.

FIG. 4 is a circuit diagram showing an example of a refrigerant circuit configured by using the valve device.

FIG. 5 is a circuit diagram showing an example of a conventional refrigerant circuit.

[Explanation of symbols]

 10 valve body 11 1st movable valve body 12 2nd movable valve body 13 movable rod 14 urging means 21 1st compartment 22 2nd compartment 23 3rd compartment 24 4th compartment 25 Five compartments 31 First communication hole 32 Second communication hole 33 Third communication hole 34 Fourth communication hole 41 Port 42 port 44 port 45 port 51 First insertion hole 52 Second insertion hole 61 No. One spring 62 Second spring 63 Third spring 71 First communication passage 72 Second communication passage 81 First valve body 82 Second valve body 83 Third valve body

Claims (3)

[Claims] 1. A first to a fifth compartment, which are sequentially connected to each other, is provided inside the first to fifth compartments, and the first to the fourth compartments are sequentially arranged between adjacent compartments. A valve body which is communicated with each other through a communication hole, and whose ports are respectively communicated with the first compartment, the second compartment, the fourth compartment and the fifth compartment; It is disposed in the second compartment, has a first insertion hole of a predetermined depth in the central portion, and abuts on the periphery of the first communication hole on the side of the second compartment, A first movable valve body biased in the first compartment side direction by a first spring so as to close the first communication hole except for the insertion hole portion; and the fourth compartment. And has a second insertion hole of a predetermined depth in the central portion, and abuts on the periphery of the fourth communication hole of the fourth communication hole to form a portion of the second insertion hole. Except the fourth A second movable valve body biased in the fifth compartment side direction by a second spring so as to close the communication hole, the first to fourth communication holes, the first and second communication holes. A first communicating passage having a small cross-sectional area is formed between the through hole and the inside of the valve body so as to be movable in the through direction and to form a small cross-sectional area with the inner wall of the first through hole. In addition, a second communication passage having a small cross-sectional area is formed between the second communication hole and the inner wall of the second insertion hole, and the first communication valve is located at the first compartment side position with respect to the first movable valve body. A valve is provided,
A second valve body located at the fifth compartment side position with respect to the second movable valve body is provided, a third valve body located in the third compartment is provided, and a third spring A movable rod that is biased in the first compartment side direction, a non-biased state in which no biasing force is applied to the movable rod, and a first biasing force is applied in the fifth compartment side direction. A first urging state and a second urging state that applies a second urging force in the direction toward the fifth compartment, the urging means being switchable to each state. Valve device. 2. The arrangement of the first to third valve bodies on the movable rod is such that the third valve body comes into contact with the periphery of the second communication hole as the movable rod moves. A first operation state in which the second communication hole is closed, a second operation in which both the second and third communication holes are opened without the third valve body abutting on the periphery of the second and third communication holes State and
The third valve body is brought into contact with the periphery of the third communication hole to close the third communication hole in each of the third operating states,
In the first operating state, when the first movable valve element is in contact with the periphery of the first communication hole by the urging force of the first spring, the first valve element is The first communication passage is opened without abutting the periphery of the insertion hole, the second valve body abuts the periphery of the second insertion hole to close the second communication passage, and the second communication passage is closed. Moving the movable valve element in the direction toward the first compartment to open the fourth communication hole, and in the second operating state, the first movable valve element surrounds the first communication hole. The first movable body closes the first communication passage by contacting the periphery of the first insertion hole with the first valve body in the state where the first movable body is in contact with the second movable valve body by the urging force of the first spring. Is in contact with the periphery of the fourth communication hole by the urging force of the second spring, The valve body opens the second communication passage without coming into contact with the periphery of the second insertion hole, and in the third operating state, the first valve body surrounds the first insertion hole. While contacting and closing the first communication passage, the first movable valve body is moved in the fifth compartment side direction to open the first communication hole, and the second movable valve body is The second valve body does not contact the periphery of the second insertion hole while contacting the periphery of the fourth communication hole by the biasing force of the second spring, The opening force of the third spring is larger than the biasing force of the second spring, and the sum of the first biasing force and the biasing force of the third spring is the first spring. Is smaller than the urging force of the second spring, and the total of the urging forces of the second and third springs is It determined to be greater than the biasing force of the first spring, the valve device according to claim 1, wherein a was. 3. The urging means comprises an iron core fixed to the movable rod and two electrically independent solenoids capable of applying an electromagnetic force to the iron core. Or the valve device according to 2.