JP5849266B2 - Switching valve - Google Patents

Description

  The present invention relates to a switching valve, and more particularly to a switching valve used in an indoor air conditioning system using hot water and cold water.

  Conventionally, indoor air conditioning is performed using hot water and cold water, and a housing complex having a plurality of rooms is covered with a pair of heating devices and cooling devices. In addition, an air conditioning system that does not provide a heat source for air conditioning in each building, such as district air conditioning, installs a heat source plant concentrated in one place, and supplies water or hot water at the same time.

  FIG. 7 shows an example of a composite valve used for air conditioning. The composite valve 71 includes a mixing switching valve 73 and a flow control valve 74 in the valve body 72, and operates the mixing switching valve 73. During cooling, cold water is supplied from the cold water pipe 88 to each room 91, and during heating, hot water is supplied from the hot water pipe 89, and the flow rate control valve 74 is operated to control the amount of cold water or hot water circulating in the air conditioning. To do. Hereinafter, the configuration and operation of the composite valve 71 will be described in more detail.

  The valve body 72 includes a first valve chamber 72a that houses the valve body 73a of the mixing switching valve 73, a second valve chamber 72b that houses the valve body 74a of the flow control valve 74, the first valve chamber 72a, and the second valve. The first flow path 72c that communicates with the chamber 72b, the cold water outlet 72d, the cold water inlet 72e, the hot water outlet 72f, the hot water inlet 72g, the cold water outlet 72d, and the first valve chamber 72a. A second flow path 72h, a third flow path 72i for communicating the cold water inlet 72e and the first valve chamber 72a, a fourth flow path 72j for communicating the hot water outlet 72f and the first valve chamber 72a, A fifth flow path 72k that connects the hot water inlet 72g and the first valve chamber 72a, a cold water or hot water outlet 72l, and a cold water or hot water inlet 72m are provided.

  The mixing switching valve 73 includes a valve body 73a. By rotating the valve body 73a about its axis, the fluid from the first flow path 72c is supplied to the second flow path 72h, the fourth flow path 72j, or the second flow path 72c. The flow through the flow path 72h and the fourth flow path 72j can be simultaneously performed, and the fluid flowing through the third flow path 72i or the fifth flow path 72k or the fluid flowing through the third flow path 72i and the fifth flow path 72k is simultaneously discharged. Can flow to outlet 72l.

  The flow rate control valve 74 includes a valve body 74a. By rotating the valve body 74a around its axis, the flow rate of the fluid that flows in from the inlet 72m and flows to the first flow path 72c can be controlled.

  The chilled water outlet 72 d and the chilled water inlet 72 e are connected by a chilled water pipe 88, and a cooling device 92 is disposed in the middle of the chilled water pipe 88. Further, the hot water outlet 72 f and the hot water inlet 72 g are connected by a hot water pipe 89, and a heating device 93 is disposed at an intermediate portion of the hot water pipe 89. Further, the discharge port 72l and the inflow port 72m are connected by a pipe 90 so that the room 91 can be cooled and heated with cold water or hot water flowing through the pipe 90.

  Next, the operation of the air conditioning system using the composite valve 71 having the above configuration will be described.

  When the room 91 is cooled, the mixing switching valve 73 is rotated so that the chilled water delivery port 72d, the chilled water piping 88, the chilled water inlet 72e, the third flow path 72i, the mixing switching valve 73, the discharge port 72l, and the piping 90. The cold water is circulated through the route of the room 91, the inlet 72m, the flow rate control valve 74, the first flow path 72c, the mixing switching valve 73, the second flow path 72h, and the cold water delivery port 72d. Here, the amount of cold water is controlled by rotating the flow control valve 74. Thus, the warm cold water discharged from the room 91 can be cooled by the cooling device 92, a desired amount of cold water can be led to the room 91, and the room 91 can be cooled to a desired temperature.

  On the other hand, when heating the room 91, the mixing switching valve 73 is rotated to warm the water outlet 72f, the hot water piping 89, the hot water inlet 72g, the fifth flow path 72k, the mixing switching valve 73, the outlet 72l, Hot water flows through the route of the pipe 90, the chamber 91, the inlet 72m, the flow rate control valve 74, the first flow path 72c, the mixing switching valve 73, the fourth flow path 72j, and the hot water outlet 72f. Here, the amount of hot water is controlled by rotating the flow control valve 74. As a result, the hot water discharged from the room 91 and cooled can be heated by the heating device 93, a desired amount of hot water can be guided to the room 91, and the room 91 can be heated to a desired temperature.

  Moreover, when air-conditioning and cooling an apartment house having a plurality of rooms, in addition to a pair of heating devices and cooling devices, a plurality of the composite valves 71 are installed to simultaneously heat and cool the plurality of rooms.

  In the above description of the operation, only one of the cold water and the hot water is circulated. However, it is also possible to rotate the valve body 73a of the mixing switching valve 73 and circulate the cold water and the hot water at the same time.

  However, in the conventional composite valve 71, although the valve body of both the mixing switching valve 73 and the flow rate control valve 74 is accommodated in one valve body 72 and the entire composite valve 71 is configured compactly, the valve body 72 In addition, it is necessary to drill holes in the second flow path 72h, the third flow path 72i, the fourth flow path 72j, and the fifth flow path 72k, and after opening these holes, the openings 72n and 72p are closed with plugs. There is a need. Further, after the first flow path 72c is formed, it is necessary to close the opening 72o. For this reason, it takes time for processing, leading to an increase in manufacturing cost.

  In addition, when cooling and heating an apartment house having a plurality of rooms, it is necessary to prepare a plurality of the composite valves 71 and to perform piping between them, so that the piping work becomes large. 71 installation locations had to be secured and there was room for improvement.

  Therefore, the present invention has been made in view of the problems in the above-described conventional composite valve, which reduces the manufacturing cost by reducing the number of machining points of the valve body, and also eliminates the need for piping work even when a plurality of valves are arranged. An object of the present invention is to provide a switching valve capable of constituting a composite valve that can be installed even in a narrow place.

In order to achieve the above object, the present invention is a switching valve that allows the flow of any one of two types of fluid, and the valve body of the switching valve includes a valve chamber that houses a single valve body, A flow path that is provided in the valve chamber and into which the first fluid or the second fluid flows from outside, and a first fluid that sends the first fluid that has flowed in from the flow path to the outside through the valve body. A first fluid inflow port from the outside, a first fluid inflow port through which the first fluid flows in from the outside, and a second fluid that flows out from the flow path to the outside through the valve body. A second fluid inflow port, a second fluid inflow port through which the second fluid flows from the outside, and the valve chamber, the first fluid inflow port or the second fluid flow and a discharge port for discharging to the outside the first fluid or the second fluid flowing from the inlet, the channel, transmission of the first fluid Mouth, inlet of the first fluid, outlet of the second fluid, the inlet of the second fluid, and the outlet is respectively individually provided, the inlet of the first fluid And a part of each of the first fluid delivery ports and a part of each of the second fluid inflow port and the second fluid delivery port are directly overlapped with the valve chamber. The valve body is rotated around its axis by a single driving means, so that the fluid from the flow path flows to the outlet port of the first fluid or the outlet port of the second fluid, The fluid flowing through the inlet of the first fluid or the inlet of the second fluid is configured to flow to the outlet.

  According to the present invention, since a part of the inlet and outlet of each fluid is directly communicated so as to overlap the valve chamber, the fluid inlet and outlet of each fluid and the valve chamber that are conventionally provided It is not necessary to provide a flow path between them, or to close the opening after the flow path is formed, and the number of processing parts of the valve body can be reduced, thereby reducing the manufacturing cost.

  The switching valve is a switching valve that allows a flow of one of the two types of fluids or allows a flow of both of the two types of fluids, and the discharge port includes the first fluid and the fluid The second fluid can be discharged, the first fluid and the second fluid can flow into the flow path, and the valve body rotates about its axis, whereby the flow path From the first fluid delivery port, the second fluid delivery port, or the first fluid delivery port and the second fluid delivery port. The fluid flowing through the inflow port or the second fluid inflow port, or the fluid flowing through the first fluid inflow port and the second fluid inflow port can be configured to flow to the discharge port.

  A plurality of the switching valves are juxtaposed, the first fluid inlet of each switching valve is in direct communication, the first fluid outlet of each switching valve is in direct communication, and the switching valve of each switching valve is The second fluid inlet can be directly communicated, and the second fluid outlet of each switching valve can be directly communicated. According to this switching valve, in addition to reducing the manufacturing cost by reducing the number of machining parts of the valve body as in the above-described invention, the piping work required when each switching valve is arranged independently becomes unnecessary. In addition to reducing the installation cost, since there is no connection pipe, it is possible to cope with a narrow installation place.

  In the switching valve, the first fluid can be cold water and the second fluid can be hot water, which can be suitably used in an air conditioning system.

  As described above, according to the present invention, it is possible to reduce the manufacturing cost by reducing the number of machining points of the valve body, and even when a plurality of valve bodies are arranged, no piping work is required and the switching valve can be installed in a narrow place. Can be provided.

It is a partially broken assembly figure which shows an example of the compound valve provided with the switching valve concerning this invention. It is sectional drawing of the composite valve of FIG. It is a perspective view which shows the valve main body of the composite valve of FIG. It is sectional drawing which shows the switching valve accommodated in the valve main body of the composite valve of FIG. It is sectional drawing which shows the other example of the compound valve provided with the switching valve concerning this invention. It is sectional drawing which shows the further another example of the compound valve provided with the switching valve concerning this invention. It is a cross-sectional view showing an example of a conventional composite valve, and an overall configuration diagram showing an example of an air conditioning system using the composite valve.

  Next, an embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an example of a composite valve provided with a switching valve according to the present invention, and this composite valve 1 includes a mixing switching valve 3 and a flow control valve 4 in a valve body 2.

  The valve body 2 is integrally formed of resin or the like, and as shown in FIGS. 1 to 4, houses the first valve chamber 2 a that houses the valve body 3 a of the mixing switching valve 3 and the valve body 4 a of the flow control valve 4. The second valve chamber 2b, the flow path 2c that connects the first valve chamber 2a and the second valve chamber 2b, the cold water outlet 2d, the cold water inlet 2e, the hot water outlet 2f, and the hot water inlet 2g. And a cold water or hot water outlet 2l and a cold water or hot water inlet 2m. Here, the cold water outlet 2d, the cold water inlet 2e, the hot water outlet 2f, and the hot water inlet 2g communicate directly with the first valve chamber 2a.

  As shown in FIGS. 1, 2, and 4, the mixing switching valve 3 includes a valve body 3a. As shown in FIG. 4, the valve body 3a includes two first valve chambers 2a in the vertical direction. A partition plate 3b for partitioning, an upper closing part 3c, a lower closing part 3d, an upper opening part 3e, a lower opening part 3f, and a bottom opening part 3g are provided. By rotating the valve body 3a around its axis with an electric motor or the like, the fluid from the flow path 2c can flow simultaneously to the cold water outlet 2d or the hot water outlet 2f or the cold water outlet 2d and the hot water outlet 2f. At the same time, a fluid flowing through the cold water inlet 2e or the hot water inlet 2g, or a fluid flowing through the cold water inlet 2e and the hot water inlet 2g can be made to flow to the discharge port 21. Note that FIG. 4 shows that cold water flowing into the cold water inlet 2e and hot water flowing into the hot water inlet 2g are led to the outlet 2l by 50%, and the water passing through the flow path 2c is supplied to the cold water outlet 2d and the hot water outlet. A state in which 50% is led to 2f is shown.

  As shown in FIGS. 1 and 2, the flow control valve 4 includes a valve body 4a. By rotating the valve body 4a around its axis by an electric motor or the like, the flow path 2c of the second valve chamber 2b By changing the opening area, it is possible to control the flow rate of the fluid flowing in from the inlet 2m and flowing into the flow path 2c.

  Since the operation of the air conditioning system using the composite valve 1 having the above-described configuration is the same as that in the case of using the conventional composite valve 71 shown in FIG. , The mixing switching valve 3 is rotated, the chilled water outlet 2d, the chilled water piping and the cooling device (not shown), the chilled water inlet 2e, the mixing switching valve 3, the outlet 2l, the room (not shown), the inlet 2m, the flow rate. The chilled water is circulated through the route of the control valve 4, the flow path 2c, the mixing switching valve 3, and the chilled water delivery port 2d, and the amount of the chilled water is controlled by rotating the flow rate control valve 4. Thereby, the cold water discharged from the room is cooled by the cooling device, and a desired amount of cold water can be led into the room, and the room can be cooled to a desired temperature.

  On the other hand, when performing heating, the mixing switching valve 3 is rotated so that the hot water outlet 2f, the hot water pipe (not shown), the hot water inlet 2g, the mixing switching valve 3, the discharge port 2l, the room (not shown), Hot water is circulated through the route of the inlet 2m, the flow rate control valve 4, the flow path 2c, the mixing switching valve 3, and the hot water delivery port 2f, and the amount of hot water is controlled by rotating the flow rate control valve 4. Accordingly, the hot water discharged from the room and cooled can be heated by the heating device, a desired amount of hot water can be led into the room, and the room can be heated to a desired temperature.

  The composite valve 1 (mixing switching valve 3) having the above configuration includes the second flow path 72h to the fifth flow path 72k that existed in the composite valve 71, and openings 72n and 72p formed when these are drilled. Therefore, the hole processing and the closing process using the lid are not necessary, and the manufacturing cost of the valve body 2 can be reduced.

  Next, another example of the composite valve provided with the switching valve according to the present invention will be described with reference to FIG.

  The composite valve 31 is different from the composite valve 1 in the mounting direction of the flow rate control valve 4 to the valve body 2, and the other configuration is the same as that of the composite valve 1. That is, in the composite valve 1, the axis of the valve body 3a of the mixing switching valve 3 and the axis of the valve body 4a of the flow control valve 4 are parallel to each other. The axis 3a and the axis of the valve body 4a of the flow control valve 4 are configured to be orthogonal to each other. With this configuration, the composite valve 1 requires the lid 2q (see FIG. 2) for closing the hole at the right end of the flow path 2c. However, the composite valve 31 does not need the lid 2q, and the valve body 2 has a simpler configuration. Can be realized.

  Next, still another example of the composite valve provided with the switching valve according to the present invention will be described with reference to FIG.

  This composite valve 41 is obtained by stacking four composite valves 1 shown in FIG. 2 in the vertical direction of the drawing of the drawing, and each composite valve 1 (1A to 1D) is a valve body 2 ( 2A-2D (2A is abbreviate | omitting illustration), the mixing switching valve 3 (3A-3D), and the flow control valve 4 (4A-4D) are provided.

  Further, the cold water outlet 2d of the valve body 2 of each composite valve 1 is directly communicated, the cold water inlet 2e of each valve body 2 is directly communicated, and the hot water outlet 2f of each valve body 2 is directly communicated. The hot water inlet 2g of each valve main body 2 is directly communicated to form a total of four pipe lines, each of which is closed with lids 42 to 45. The discharge port 2l and the inflow port 2m (see FIG. 2) of each composite valve 1 (1A to 1D) are connected to piping for guiding cold water or hot water to each room such as an apartment house. The valve 1 can be used to heat and cool each room.

  By using this composite valve 41, piping work required when the composite valves 1A to 1D are arranged independently becomes unnecessary, and it is also installed in a narrow place by the amount that connection piping is unnecessary. It becomes possible.

  In the above example, the case where the composite valve provided with the switching valve according to the present invention is applied to an air conditioning system and the flow of cold water or hot water is allowed or the flow rate is adjusted by mixing both has been described. The composite valve including the switching valve according to the present invention is not limited to these applications, and can be widely used when controlling two different types of fluids.

1 (1A to 1D) Compound valve 2 (2A to 2D) Valve body 2a First valve chamber 2b Second valve chamber 2c Flow path 2d Cold water outlet 2e Cold water inlet 2f Hot water inlet 2g Hot water inlet 2l Outlet 2m Flow Inlet 2q Lid 3 (3A-3D) Mixing switching valve 3a Valve body 3b Partition plate 3c Upper closing part 3d Lower closing part 3e Upper opening part 3f Lower opening part 3g Bottom opening part 4 (4A-4D) Flow control valve 4a Valve body 31 Compound Valve 41 Compound Valve 42-45 Lid

Claims (4)

A switching valve that allows the flow of one of two types of fluid,
The valve body of the switching valve is
A valve chamber containing a single valve body;
A flow path provided in the valve chamber and into which the first fluid or the second fluid flows from the outside;
A first fluid delivery port for delivering the first fluid flowing in from the flow path to the outside via the valve body;
An inlet of a first fluid into which the first fluid flows from outside;
A second fluid delivery port for delivering the second fluid flowing in from the flow path to the outside via the valve body;
An inlet of a second fluid into which the second fluid flows from the outside;
A discharge port provided in the valve chamber, for discharging the first fluid or the second fluid flowing in from the inlet of the first fluid or the inlet of the second fluid ;
The flow path, the first fluid outlet, the first fluid inlet, the second fluid outlet, the second fluid inlet, and the outlet are individually provided. And
Wherein each of a portion of the inlet and outlet of the first fluid in the first fluid, and a part of each of the inlet of the second fluid and the second fluid delivery port, the Communicate directly with the valve chamber,
The valve body is rotated around its axis by a single driving means, so that the fluid from the flow path flows into the first fluid outlet or the second fluid outlet and the first fluid A switching valve configured to flow the fluid flowing through the fluid inlet or the second fluid inlet to the outlet. A switching valve that allows the flow of either one of the two types of fluids or allows the flow of both of the two types of fluids;
The discharge port can discharge the first fluid and the second fluid;
The first fluid and the second fluid can flow into the flow path,
When the valve body rotates about its axis, the fluid from the flow path is supplied to the first fluid outlet or the second fluid outlet, or the first fluid outlet and the first fluid. And a fluid flowing through the first fluid inlet or the second fluid inlet, or the first fluid inlet and the second fluid inlet. The switching valve according to claim 1, wherein the switching fluid is configured to flow a flowing fluid to the discharge port.   A plurality of switching valves according to claim 1 or 2 are juxtaposed, the first fluid inlet of each switching valve is directly communicated, and the first fluid delivery port of each switching valve is directly communicated. The switching valve characterized in that the second fluid inlet of each switching valve is in direct communication and the second fluid outlet of each switching valve is in direct communication.   The switching valve according to claim 1, wherein the first fluid is cold water, and the second fluid is hot water.

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