JP2002243051A - Fluid passage switching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid passage switching device capable of simultaneously switching a plurality of passages by one switching operation using a single switching device in a system in which a plurality of selector valves are disposed. SOLUTION: This fluid passage switching device is interposed in a plurality of fluid passages to thereby switch the passages. The device is provided with a first and second passage switching members 10, 11 for switching the passage direction of the fluid, water passage 21a, 22a communicating between connecting parts 21c, 22c connected to the outside, and a fixed casing 20 in which a plurality of casing parts 21, 22 having storing parts 21a, 22b for storing a first and second passage switching members 10, 11 are stacked to constitute a plurality of layers of water passages 21a, 22a in the midway of the water passages 21a, 22a. The first and second passage switching members 10, 11 are stored over a plurality of layers, and disposed to simultaneously switch the passage directions of the plurality of layers of water passages 21a, 22a constituted in the fixed casing 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid flow switching device for switching a flow direction of a fluid such as cooling water, and more particularly to a fluid flow switch capable of simultaneously switching a plurality of flow passages by one switching operation. The present invention relates to a structure of a road switch.

[0002]

2. Description of the Related Art As a fluid flow path switching device for switching the flow direction of a fluid of a heat medium such as engine cooling water or brine mixed with antifreeze such as ethylene glycol of a water-cooled engine, the present inventor has disclosed in Japanese Patent Application No. 2000-214873. No. 56055, a plurality of adsorbers using an adsorbent such as silica gel are provided, and the heat medium circulated through the adsorbers is subjected to the adsorption process and the desorption process using the waste heat of a water-cooled engine, thereby performing air conditioning in the vehicle cabin. We have applied for an adsorption refrigerator.

In this adsorption refrigerator, as shown in FIG. 8, a vehicle driving engine 100 and four adsorbers 11 are provided.
0, an indoor heat exchanger 120, an outdoor heat exchanger 130, three pumps 140, and a flow path switching valve 150. The adsorber 110 exchanges heat between an adsorbent, such as silica gel, which encloses a refrigerant such as brine water, adsorbs a vapor refrigerant, and desorbs the adsorbed refrigerant by being heated when heated, and a heat medium, such as cooling water. Suction core 110
a and an evaporative condensing core 11 for exchanging heat between the heat medium and the refrigerant
0b is stored. The adsorbent in the adsorption core 110a is heated using waste heat (engine cooling water) of the vehicle running engine 100 as a heat source.

[0004] The indoor heat exchanger 120 is a heat exchanger in which the heat medium cooled by the evaporative condensation core 110b circulates and cools the air blown into the room. The outdoor heat exchanger 130 is a heat exchanger that exchanges heat between the heat medium and the outdoor air to supply a heat medium having a temperature lower than engine cooling water (high-temperature heat medium) to the four adsorbers 110, Pump 140
The heat medium (including engine cooling water) is adsorbed by the adsorber 11.
0, an electric circulation pump that circulates between the indoor heat exchanger 120, the outdoor heat exchanger 130, and the vehicle running engine 100.

[0005] The flow path switching device 150 is an electric switching valve for switching the flow direction of the heat medium or the refrigerant. Four of these are four-way valves 150a, and the other two are six-way valves. A plurality of flow path directions are configured by 150b.

[0006] The four-way valve 150a and the six-way valve 150b are provided with heat circulating in the adsorber 110, the indoor heat exchanger 120 and the outdoor heat exchanger 130 via a control device (not shown) according to a preset control program. The flow direction of the medium and the refrigerant is controlled. In the above-mentioned Japanese Patent Application No. 2000-56055, the first state is changed to the eighth state by controlling the switching of the fluid flow direction between the four-way valve 150a and the six-way valve 150b and driving the pump 140.
There are eight operating states up to the state.

[0007]

However, according to the above-mentioned prior application, the four-way valve 150a and the six-way valve 150b
Is provided in a plurality of individual bodies, and by performing switching control by an electric driving means such as a servo motor provided for each, a control program becomes complicated, and
The number of parts increases, and the cost of parts increases.

[0008] Further, by providing a plurality of separate units,
The piping connected to the four-way valve 150a and the six-way valve 150b is complicated, and the number of parts increases, so that the cost of parts further increases.

In view of the above, an object of the present invention is to provide
An object of the present invention is to provide a fluid flow path switching device capable of simultaneously switching a plurality of flow paths by one switching operation using a single switching device from a method in which a plurality of switching valves are provided.

[0010]

In order to achieve the above object, the technical means described in claims 1 to 6 is adopted. That is, according to the first aspect of the present invention, there is provided a fluid channel switching device that switches a channel direction by interposing a plurality of fluid channels, wherein the channel switching member (1) switches a channel direction of a fluid.
0, 11), connecting portions (21c, 22c) connected to the fluid flow path and connected to the outside, and the connecting portions (21c, 22c).
c, 22c), water passages (21a, 22a) communicating with each other,
And accommodation portions (21b, 22) accommodating the flow path switching members (10, 11) in the middle of the water passages (21a, 22a).
b) and a fixed housing (20) in which a plurality of layers of water passages (21a, 22a) are formed by laminating a plurality of housing portions (21, 22), and a flow path switching member (10, 22). 11)
Is housed over a plurality of layers and has a fixed housing (2
Multi-level water passages (21a, 22a) configured in 0)
Are arranged so as to be able to simultaneously switch the flow path directions.

According to the first aspect of the present invention, the flow path switching members (10, 11) are provided in the housing portions (21b, 22b).
And the fixed housing (2
Multi-level water passages (21a, 22a) configured in 0)
Are arranged so as to be able to simultaneously switch the direction of the flow path, and by operating the flow path switching members (10, 11), the flow direction of the water passages (21a, 22a) of a plurality of levels can be switched. Therefore, for example, compared to the method of installing separately,
A plurality of flow paths can be simultaneously switched by one switching operation without separately installing an actuator such as a servo motor for driving the flow path switching members (10, 11). Therefore, the number of parts and the cost of parts can be reduced.

Further, the connecting portion (21) connected to the fluid flow path
c, 22c) and the pipes connected to the connecting portions (21c, 22c) can be partially replaced by water passages (21a, 22b) formed in the fixed housing (20), so that they are installed separately. As compared with the method of performing the above, since the number of pipes connected to the connection portions (21c, 22c) of the fluid flow path switch and the number of attached parts such as connection fittings can be reduced, piping management can be simplified and the cost of parts can be reduced. Can be achieved.

According to the second aspect of the present invention, the water passages (21a, 22a) formed in the fixed housing (20) are:
A groove is formed on the surface of the housing (21, 22), and a plurality of housings (21, 22) are stacked so that the surfaces of the housing (21, 22) overlap. It is characterized by:

According to the invention described in claim 2, for example,
The water passages (21a, 22a) are formed such that the cross section of the water passages (21a, 22a) has a substantially U-shape or the like and one end thereof is open, and a plurality of the grooves are laminated.
a) can be formed in a plurality of layers. Therefore, the connection part (21
c, 22c), the water passages (21a, 22a) formed so as to communicate with the storage portions (21b, 22b) have a meandering shape, and even if the groove pattern due to the complicated circuit configuration is complicated, it is easy to use a resin mold or the like. It can be integrally molded.

Further, as described in the first aspect, the pipes connected to the connecting portions (21c, 22c) have the water passage (21).
a, 22a), it is not possible to reduce the radius of curvature of the bent portion due to problems such as crushing of the pipe in the pipe connection, and a large storage space is required. The multi-level water channel (2
1a and 22a) can be formed, so that the fluid flow path switch can be downsized.

According to the third aspect of the present invention, the flow path switching members (10, 11) are rotated in the storage portions (21b, 22b) to rotate the flow paths of the multi-level water passages (21a, 22a). It is characterized by switching directions simultaneously.

According to the third aspect of the present invention, the flow path switching members (10, 11) are provided inside the storage portions (21b, 22b).
By rotating the flow paths at the same time by rotating, a plurality of flow path directions can be switched via a driving means (50) such as a servomotor.

According to the invention described in claim 4, the fixed housing (2)
0), a plurality of storage portions (21b, 22b) for respectively storing the plurality of flow path switching members (10, 11) are formed, and in the invention according to claim 5, the plurality of flow path switching members are provided. (10, 11) is characterized in that it is driven by one driving means (50) via the connecting means (40).

According to the fourth and fifth aspects of the present invention, even if a plurality of storage portions (21b, 22b) for storing a plurality of flow path switching members (10, 11) are formed, the connecting means is provided. As (40), by connecting to one drive means (50) such as a servomotor via a link mechanism or the like, a plurality of flow path directions can be simultaneously switched by one switching operation.

According to the sixth aspect of the present invention, the flow path switching members (10, 11) reciprocate in the storage sections (21b, 22b) to thereby form the flow paths of the water passages (21a, 22a) of a plurality of levels. It is characterized by switching directions simultaneously.

According to the invention described in claim 6, in addition to the method of rotating the flow path switching members (10, 11), the housing portion (2)
By simultaneously switching the flow direction by reciprocating in 1b, 22b), a plurality of flow directions can be switched via a driving means (50) such as an actuator.

The reference numerals in parentheses of the above means indicate the correspondence with the concrete means of the embodiment described later.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) A first embodiment of a fluid flow path switching device according to the present invention will be described below with reference to FIGS. First, as shown in FIG. 1, in the present embodiment, a plurality of flow path switching valves provided separately are integrally configured, and a plurality of flow path switching valves are interposed in a plurality of fluid flow paths to perform a plurality of switching operations by one switching operation. This is a fluid channel switching device A that switches the fluid channels at the same time. The fluid flow path switching device A includes at least two or more first flow path switching members 10 and second flow path switching members 11 that are switching valves that switch a plurality of flow direction, and these flow path switching members 10, The housing 11 includes a fixed housing 20, an upper cover 30, a link member 40 as a connecting means, and a servomotor 50 as a driving means.

As shown in FIGS. 2A to 2C, the first flow path switching member 10 and the second flow path switching member 11 are provided with two through holes 10a. Is a switching member having a function of a four-way valve provided with a two-way valve having a function of two four-way valves in which two through-holes 11a are provided in two layers in the vertical direction. It is a member. These flow path switching members 10 and 11 are formed in a substantially cylindrical shape, and rotating shafts 10b and 11b for rotating are integrally formed at the upper ends thereof.

Next, the fixed housing 20 has at least two housing portions 21 and 22 laminated. And FIG.
As shown in FIGS. 3A to 3D, the housing portions 21 and 22 have a plurality of water passages 21a and 22a and the first and second switching members in the middle of the water passages 21a and 22a. Are provided.

The cross section of the plurality of water passages 21a, 22a is, as shown in FIG.
2, a substantially U-shaped groove having one end opened so as to open in the die-cutting direction (vertical direction in the drawing), or as shown in FIG. By forming a hole or the like penetrating in the direction, it is manufactured by integral molding using a resin material.

Then, the housing portions 21 and 22 are laminated, and the first and second flow path switching members 10 and
11 is housed and the upper lid 30 is connected, FIG.
As shown in the figure, the water passages 21a and 22a are configured in a plurality of layers through the above-described holes penetrating in the vertical direction. Therefore, the second flow path switching member 11 is rotated (for example,
Here, the upper and lower flow paths can be simultaneously switched by rotating about 1/4 turn (that is, turning by 90 degrees).

In this embodiment, the water passages 21a, 21a,
2a is formed by a groove having a substantially U-shaped cross section.
Since stress concentration due to water pressure is applied to the vicinity of part B in FIG.
As shown in (b), the housing parts 21 and 22 and the upper lid 30
A substantially semicircular groove may be formed and laminated, so that the water passages 21a and 22a having a substantially circular cross section may be formed. Thereby, the stress concentration in the portion B is reduced.

The ends of the water passages 21a and 22a communicating with the housings 21b and 22b are connected to the connecting portions 21c and 22c and connected to the fluid flow path. Also, 21d is the first and second flow path switching members 10, 11 and the housing portions 21b, 22.
b, a through-hole formed in the first and second flow path switching members 10 and 11.
1a is airtight.

The first and second flow path switching members 10, 1
The one rotating shaft 10b, 11b is connected to the servomotor 50 via the link member 40 and is capable of simultaneously switching a plurality of flow paths by being rotated.

The operation of the fluid flow path switching device A according to the present embodiment having the above-described configuration is performed by rotating the servo motor 50 to simultaneously switch the connection sources of the six fluid flow paths by a so-called one switching operation. Is what you can do. In other words, three functions of the four-way valve are integrally incorporated, and a plurality of flow path directions can be simultaneously switched by driving one servo motor 50.

According to the fluid flow path switching device A of the above embodiment, the second flow path switching member 11 having the upper and lower two-layer through holes 11a is formed in the accommodation sections 21b and 22b over a plurality of layers. The first flow path switching member 10
And a plurality of water passages 21 formed in the fixed casing 20 by connecting the plurality of
a, 22a can be switched at the same time.
Therefore, for example, compared to the conventional method of installing separately,
A plurality of flow paths can be simultaneously switched by one switching operation without separately installing an actuator such as a servomotor 50 for driving the flow path switching members 10 and 11. Thereby, the number of parts and the cost of parts can be reduced.

The cross section of each of the water passages 21a and 22a is formed in a substantially U-shaped or substantially semicircular shape with a groove opening at one end, and a plurality of the grooves are laminated to form the water passage 2a.
1a and 22a can be formed in a plurality of layers. Therefore, even if the water passages 21a and 22a formed so as to communicate from the connection portions 21c and 22c to the storage portions 21b and 22b have a meandering shape and a complicated groove pattern due to a complicated circuit configuration, it is easy to form a resin mold or the like. Can be molded.

(Second Embodiment) In the first embodiment described above, the functions of the four-way valve are integrated into three parts, and the fluid flow path for simultaneously switching a plurality of flow directions by driving one servomotor 50 is described. Although the switching device A has been described, the invention is not limited to this, and a fluid channel switching device B that switches many fluid channels based on a predetermined control program by driving one servomotor 50 may be used.

In the present embodiment, the fluid flow path switching device B is applied to the adsorption type refrigerator previously filed by the inventor (Japanese Patent Application No. 2000-56055). As shown in FIG. 8, the fluid flow switching device B includes four four-way valves 150a and two six-way valves 150b.
By the control program for switching 50 from the first state to the eighth state, the adsorption refrigeration capacity for air-conditioning the vehicle interior with the heat of evaporation of the heat medium in the adsorption process from the adsorber 110 can be sufficiently exhibited.

However, in the present application, four four-way valves 15
Since 0a and two six-way valves 150b are separately provided, the drive means provided in each switching valve is controlled based on a control program. Therefore, the control program becomes complicated, and many parts such as driving means and pipes and joints connected to these switching valves are required.

Therefore, in the present embodiment, a fluid flow path switch B in which the switching functions of the four four-way valves 150a and the two six-way valves 150b are integrally assembled, wherein a plurality of switching operations are performed by one switching operation. Housing units 21 and 2 accommodating a plurality of first and second channel switching members 10 and 11 so as to switch the channel direction.
2, a plurality of water passages 21a and 22a and a housing 21b,
22b is formed and laminated.

More specifically, as shown in FIGS. 5A and 5B, a plurality of water passages 21a and 22a and a housing Part 2
1b, 22b, and these storage portions 21b,
Among the 22b, a first portion having a switching function of the six-way valve 150b shown in FIG. 8 is provided in the accommodation portion 21b on the left side in FIG.
The flow path switching member 10 is housed, and the remaining housing portions 21b, 2b
2b houses the second flow path switching member 11 having the function of switching the four-way valve 150a shown in FIG.

The second flow path switching member 11 is provided with a plurality of upper and lower two-layer through holes 11a, and is housed over the housing portions 21b and 22b of the housing portions 21 and 22. Here, three through holes 10a are provided in the first flow path switching member 10, and the first flow path switching member 10 is rotated by 1/6 turn (that is, 60 degrees) to form a plurality of layers in the fixed housing 20. The switching of the channel direction of the water passages 21a and 22a configured as described above can be performed simultaneously. In addition, each water passage 21a, 2
The end of 2a is communicated with connecting portions 21c and 22c (not shown).

The first and second flow path switching members 10, 1
One rotating shaft 10b, 11b is connected to a link member 4 (not shown).
0, is connected to a servo motor 50 (not shown), and is switched to a set flow direction by rotating the servo motor 50 by a predetermined angle based on a control program for switching from the first state to the eighth state. However, a plurality of flow paths can be simultaneously switched by one switching operation.

According to the fluid flow path switching device B according to the above embodiment, the four four-way valves 150a and the two six-way valves 15
Out of the pipes connected to Ob, a pipe connecting between these switching valves is formed in a water passage 21 formed in the fixed housing 20.
a and 22a, so that the connection portions 21c,
Since the number of pipes connected to 22c and the number of attached parts such as connection fittings can be reduced, pipe management can be simplified and the cost of parts can be reduced.

The pipes connected to the water passages 21a, 21a,
2a, the pipe connection requires a large storage space because the radius of curvature of the bent portion cannot be reduced due to problems such as collapse of the pipe. Water passages 21a, 22a
Can be formed, the size of the fluid flow path switch B can be reduced.

(Third Embodiment) In the above embodiment, the first and second flow path switching members 10 and 11 are formed in a substantially cylindrical shape, and the insides of the housing portions 21b and 22b are rotated by a predetermined angle to flow. Although the switching of the road direction was performed, the present invention is not limited to this, and the first and second flow path switching members 10 and 11 are formed so as to reciprocate in the die-cutting direction (vertical direction in the drawing) to switch a plurality of flow paths. The fluid channel switching device C may be used. This will be described with reference to FIGS.

First, as shown in FIGS. 6 (a) and 6 (b), here, a plurality of housing portions 21, 22, 23, 24 and an upper lid 30 constituting the fixed housing 20 are provided with a second cover. 1,
As in the second embodiment, a groove having a substantially U-shaped or substantially semicircular cross section is formed, and each of the housing portions 21, 22, 23,
24, the water passages 21a, 2
2a is configured. In addition, the water passages 21a, 22
a, a storage part 21b is formed in the middle of the storage part 21a.
The first flow path switching member 10 is connected to the servo motor 50 via the drive shaft 50a in the area b. The first flow path switching member 10 is formed in a hollow, substantially cylindrical shape, has a through hole 10a provided therein, and has airtight members 21d engaged at both ends. 6 (a) or 6 (a) or FIG. 6 (a).
The switching is performed in the direction shown in (b), and the switching function of the four-way valve is provided. The first flow path switching member 10
Is extended, and a plurality of housing portions are further laminated to provide a function of switching the six-way valve.

The above-mentioned fluid flow path switch C has the function of one four-way valve. Next, in the fluid flow path switch D having the function of switching two four-way valves, FIG. As shown in (a) and FIG. 7 (b), at least the upper lid 30 and the housing parts 21, 22, 23, 24 are further laminated,
The water passages 21a, 22a, the accommodating portion 21b, and the first flow path switching member 10 are configured for two fluid flow path switching devices C, and the first flow path switching members 10 are connected by a connection shaft 50b. Therefore, a switching function equivalent to two four-way valves can be performed by reciprocating one servomotor 50 in the vertical direction (the direction of die release) in the drawing.

According to the third embodiment, the housing 2
1, 22, 23, and 24 can be manufactured by integral molding, and by laminating a plurality of housing portions 21, 22, 23, and 24, flow paths of a plurality of water passages 21a and 22a formed in a plurality of layers are formed. Can be switched at the same time.

Further, as compared with the first and second embodiments in which the first flow path switching member 10 is rotated, the first flow path switching
In this embodiment, since the airtight member 21d is not compressed when switching, the torque of the servomotor 50 at the time of switching the flow path is reduced, and there is little possibility that foreign matter is caught in the airtight portion, and the durability of the airtight member 21d is reduced. improves.

(Other Embodiments) In the above embodiment, the present invention is applied to a fluid passage switch for circulating a heat medium such as engine cooling water or brine water mixed with an antifreeze such as ethylene glycol of a water-cooled engine. However, the present invention is not limited to this, and is applied to switching of a flow path of a liquid in general.

Further, in the second embodiment, the present invention is applied to an adsorption refrigerator, but the present invention is not limited to this.
It can be applied to other refrigerators and air conditioners.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an overall configuration of a fluid flow path switch A according to a first embodiment of the present invention.

FIG. 2A is a front view illustrating a configuration of a first flow path switching member 10 according to the first embodiment, FIG. 2B is a front view illustrating a configuration of a second flow path switching member 11, and FIG. FIG. 3 is a plan view showing a configuration of first and second flow path switching members 10 and 11.

FIG. 3A is a plan view illustrating a configuration of a housing unit 21 and first and second flow path switching members 10 and 11 according to the first embodiment, and FIG. Channel switching member 1
11, (c) is a cross-sectional view showing the XX cross section shown in (b), and (d) is a cross-sectional view showing the YY cross section shown in (a). is there.

FIG. 4A is a longitudinal sectional view showing the shape of water passages 21a and 22a having a U-shaped cross section in the first embodiment, and FIG.
Is a longitudinal sectional view showing the shape of water passages 21a and 22a having a substantially circular cross section.

FIG. 5A is a plan view illustrating a configuration of a housing 21 and first and second flow path switching members 10 and 11 according to a second embodiment, and FIG. Channel switching member 1
It is a top view which shows the structure of No. 11.

FIG. 6A is a vertical cross-sectional view illustrating a configuration of a fluid flow path switch C according to a third embodiment, and FIG. 6B is a view in which a first flow path switching member 10 of the fluid flow path switch C is located on a lower side. FIG. 5 is a longitudinal sectional view showing a flow path when the liquid crystal display is driven.

FIG. 7A is a longitudinal sectional view illustrating a configuration of a fluid flow path switch D according to a third embodiment, and FIG. 7B is a view in which a first flow path switching member 10 of the fluid flow path switch D is located on a lower side. FIG. 5 is a longitudinal sectional view showing a flow path when the liquid crystal display is driven.

FIG. 8 is a configuration diagram showing the overall configuration of an adsorption refrigerator described in Japanese Patent Application No. 2000-56055.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... 1st flow-path switching member (flow-path switching member) 11 ... 2nd flow-path switching member (flow-path switching member) 20 ... Fixed housing | casing 21, 22 ... Housing | casing 21a, 22a ... Water passage 21b, 22b. ... accommodation parts 21c, 22c ... connection part 40 ... link member (connection means) 50 ... servomotor (drive means)

Claims (6)

[Claims] A fluid flow path switching device for switching a flow direction by interposing a plurality of fluid flow paths, wherein the flow path switching member switches a flow direction of a fluid.
Connecting portions (21c, 22c) connected to the fluid flow path and connected to the outside; and the connecting portions (21c, 22c).
c) A housing having water passages (21a, 22a) communicating with each other and a housing part (21b, 22b) for housing the flow path switching member (10, 11) in the middle of the water passages (21a, 22a). A fixed housing (20) in which a plurality of parts (21, 22) are laminated to constitute the water passages (21a, 22a) in a plurality of levels; and the flow path switching members (10, 11) are A fluid that is accommodated over a plurality of layers and is arranged so as to simultaneously switch the flow direction of the water passages (21a, 22a) of the plurality of layers configured in the fixed housing (20). Channel switch. 2. The water passage (21a, 22a) formed in the fixed housing (20) is provided in the housing (21, 2).
2), a groove is formed on the surface thereof, and the case (21, 2) is formed.
2) so that the surfaces of the housing portions (21, 2
The fluid flow path switching device according to claim 1, wherein a plurality of 2) are stacked. 3. The flow path switching members (10, 11) simultaneously switch the flow direction of the water passages (21a, 22a) in a plurality of levels by rotating inside the storage portions (21b, 22b). The fluid flow path switching device according to claim 1, wherein: 4. The fixed housing (20) is formed with a plurality of storage portions (21b, 22b) for storing a plurality of the flow path switching members (10, 11), respectively. The fluid flow path switching device according to claim 1. 5. A plurality of flow path switching members (10, 11).
Is connected to the connecting means (40) by one driving means (50).
The fluid flow path switching device according to claim 4, wherein the fluid flow path switching device is driven via a fluid path. 6. The flow path switching members (10, 11) simultaneously switch the flow direction of the water passages (21a, 22a) in a plurality of levels by reciprocating in the storage portions (21b, 22b). The fluid flow path switching device according to claim 1, wherein: