JP2014202299A - Mixing valve unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a degree of freedom of piping layout.SOLUTION: A mixing valve includes: a water supply pipe member 27 in which a water supply pipe 29 connected to a water supply pipeline is protrusively provided; a hot water supply pipe member 28 in which a hot water supply pipe 33 connected to a hot water supply pipeline 19 is protrusively provided; and housings 25 and 26 in which the water supply pipe member 27 and the hot water supply pipe member 28 are mounted detachably, and which internally have introduction chambers 31 and 32 for water and hot water communicating with the water supply pipe 29 or the hot water supply pipe 33, mixing valve bodies 10 and 11 for adjusting a mixture ratio of water and hot water in these introduction chambers 31 and 32, and mixing chambers 10B and 11B formed by communicating with lead-out pipes 47 and 48 for leading out mixed hot water mixed by the mixing valve bodies 10 and 11 to the outside. The water supply pipe member 27 and the hot water supply pipe member 28 can be mutually exchanged and mounted with respect to the housings 25 and 26.

Description

  The present invention relates to a mixing valve unit.

  The following Patent Document 1 is known as a mixing valve unit that discharges hot water that has passed through a heat exchanger and water that has passed through a bypass passage of the heat exchanger while adjusting the mixing ratio thereof.

  The mixing valve unit disclosed herein has a casing, and a piping connection port for separately taking in water and hot water is formed in the casing. A mixing valve is housed inside the casing, and the mixing ratio of water and hot water can be adjusted using a stepping motor so that hot water can be discharged.

JP 2013-36517 A

  However, in the casing described above, since the pipe connection port for taking in water and hot water is formed integrally with the casing, the connection direction of the pipe is fixed. On the other hand, depending on the specifications of the hot water supply system, the positions of the pipes to be connected to these pipe connection ports may be different. Then, depending on the specification, it may be difficult to connect the pipe to the corresponding pipe connection port, and in some cases, a different type of casing may be prepared for each specification.

  This invention is completed based on the above situations, Comprising: It aims at providing the mixing valve unit which can raise the freedom degree of piping layout.

  The mixing valve unit of the present invention includes a water supply pipe member protruding from a water supply pipe connected to a water supply pipe line, a hot water supply pipe member protruding from a hot water supply pipe connected to a hot water supply line, a water supply pipe member, A hot water supply pipe member is detachably attached, and inside the water supply pipe or the hot water supply pipe communicated with the hot water pipe or the hot water supply pipe, a mixing valve body for adjusting the mixing ratio of water and hot water in the introduction chamber, and this mixing A housing having a mixing chamber formed in communication with a lead-out pipe for leading the mixed hot water mixed by the valve body to the outside, and the water supply pipe member and the hot water supply pipe member are exchanged with respect to the housing. It is possible to install it.

  According to the present invention, the water supply pipe member and the hot water supply pipe member can be exchanged with each other and attached to the housing. Therefore, since the direction of the water supply pipe and the hot water supply pipe can be appropriately switched according to the specification, the degree of freedom of the piping layout can be increased.

Front view of mixing valve unit FIG. 1 equivalent figure of the form which changed the attachment position of a hot water supply pipe member and a water supply pipe member Top view of mixing valve unit FIG. 3 equivalent view of a form in which the mounting positions of the first and second outlet pipes are changed. Sectional view on the first housing side Sectional view on the second housing side AA line sectional view of FIG. Right side view of mixing valve unit Same left side view Front sectional view of mixing valve unit Circuit diagram showing hot water supply circuit

A preferred embodiment of the present invention will be described.
(1) The mixing valve unit of the present invention has a pair of housings, one of which is a first housing to which the first outlet pipe is detachably attached, and the other is the outlet pipe together with the first outlet pipe. The second lead-out pipe constituting the second housing is detachably attached, and the water supply pipe member and the hot water supply pipe member are both attached to the first and second housings, and the water supply pipe and the hot water supply pipe are provided. The first and second lead-out pipes communicate with one side of the introduction chambers of the first and second housings, respectively, and the first lead-out pipe and the second lead-out pipe are connected to the mixing chamber of the first and second housings. It is preferable that each of the housings is configured to be communicable and exchangeable with each other.
If comprised in this way, a 1st derivation | leading-out pipe and a 2nd derivation | leading-out pipe can be replaced | exchanged and attached with respect to a 1st, 2nd housing. Therefore, the directions of the two outlet pipes can be appropriately selected according to the specifications.
(2) A configuration in which at least one of the first lead-out pipe, the second lead-out pipe, the hot-water supply pipe member, and the water-supply pipe member can be attached by being inverted 180 degrees with respect to the corresponding housings. It is good.
According to such a configuration, the first and second lead-out pipes can be attached by being inverted 180 degrees at each attachment position. Therefore, the degree of freedom of piping can be further increased.

Next, a first embodiment in which the mixing valve unit of the present invention is embodied will be described with reference to the drawings.
<Example 1>
FIG. 11 is a circuit diagram showing the entire hot water supply system of the present embodiment. As shown in FIG. 11, the water supply pipe 1 is connected to the mixing valve unit U. A water supply path from the water supply pipe 1 branches in the mixing valve unit U, one is a path for mixing with hot water in the mixing valve unit U, and the other is a path leading to the hot water storage tank 2. The hot water storage tank 2 is connected to the inlet side of the heat pump unit 4 via a boiling pump 3. The outlet side of the heat pump unit 4 is connected to the hot water storage tank 2 via a three-way valve 5 so that hot water is stored in the hot water storage tank 2. A reheating circuit 9 including a heat exchanger 6, a reheating pump 7 and a check valve 8 is connected to the hot water storage tank 2 so that the hot water in the hot water storage tank 2 can be reheated.

  The mixing valve unit U of the present embodiment is provided with a pair of mixing valve bodies (first and second mixing valve bodies 10 and 11), and water and hot water are separately supplied thereto, and both mixing valves are provided. The supply path of the mixed hot water in which water and hot water are mixed by the bodies 10 and 11 is also set individually. The hot water discharge path from the first mixing valve body 10 side leads to the bathtub 16 via the pouring valve unit 12, the flow switch 13, the bath circulation pump 14, and the water level sensor 15 in order from the upstream side to the downstream side. Further, this hot water discharge path branches between the pouring valve unit 12 and the flow switch 13 and is connected to the reheating circuit 17. The reheating circuit 17 shares the heat exchanger 6 with the reheating circuit 9 on the hot water storage tank 2 side, and drives the bath circulation pump 14 to circulate hot water in the bathtub 16 through the heat exchanger 6. Can be reheated. On the other hand, the hot water supply path from the second mixing valve body 11 side is connected to the hot water supply pipe line 19 including the flow rate sensor 50.

  The pouring valve unit 12 described above is a unit in which the flow rate sensor 18, the electromagnetic valve 21, the first check valve 22, the second check valve 23, and the atmosphere release valve 24 are integrated into the casing in order from the upstream side. It has become. Although the detailed structure of the air release valve is not shown, the sewage on the bathtub 16 side is opened and closed by the pressure difference between the upstream side and the downstream side of the solenoid valve 21 and the water in the downstream pipe from the solenoid valve 21 is discharged to the outside. Is of a known configuration so that it does not flow backward to the upstream side of the solenoid valve 21.

  Next, the configuration of the mixing valve unit will be described in detail. In the following description, the designations related to the vertical direction, the horizontal direction, and the front-rear direction are based on FIG. However, in FIG. 1, the front side is called the front and the back side is called the rear.

  As shown in FIG. 1 and the like, the mixing valve unit U of the present embodiment is arranged vertically between a pair of left and right housings 25, 26 and both housings 25, 26, and each bridges the housings 25, 26 together. A water supply pipe member 27 and a hot water supply pipe member 28 which are connected so as to pass are provided. The mixing valve unit U is configured by integrally assembling them.

  As shown in FIGS. 1, 6, 10, and the like, the water supply pipe member 27 is integrally formed from a pipe side connection portion 27 </ b> B and a pair of housing side connection portions 27 </ b> A. As shown in FIG. 6, the pipe-side connecting portion 27 </ b> B is formed of a water supply pipe 29 and a branch pipe 30 that is bent from the water supply pipe 29 at a substantially right angle. The water supply pipe 29 opens downward and is connected to the water supply pipe line 1. The branch pipe 30 opens rearward and is connected to a pipe that leads to the hot water storage tank 2. The water supply pipe 29 and the branch pipe 30 are formed with flow paths communicating with each other along these axial directions. Further, as shown in FIG. 10, a pair of connecting pipes 34 are formed in the connecting portion between the water supply pipe 29 and the branch pipe 30 so as to project in both the left and right directions, that is, toward the housings 25 and 26, and branch from the water supply pipe 29. It communicates with the tube 30. Both connecting pipes 34 are connected to both housings 25 and 26 and communicate with one introduction chamber (lower introduction chamber 31) formed inside both housings 25 and 26 (see FIG. 10). Further, a check valve 35 is accommodated inside the connecting pipe 34 on the side leading to the first housing 25 side so as to prevent back flow from the first housing 25 side to the water supply pipe member 27 side. is there. Furthermore, a check valve 49 is accommodated inside the water supply pipe 29 to prevent a back flow from the branch pipe 30 side and both lower introduction chambers 31 described later to the water supply side.

  Both housing-side connection portions 27A in the water supply pipe member 27 are formed on the left and right side surfaces of the pipe-side connection portion 27B and have a substantially semicircular shape around the lower half circumference around both the connecting pipes 34, and are symmetrical with each other. It is formed in a shape. Although not shown in detail in the housing side connecting portion 27A, mounting holes are formed at three positions at intervals of 90 degrees, and screws (tapping screws) are screwed in from both housings 25 and 26 side, so that the water supply pipe member 27 It is designed to be installed.

  The hot water supply pipe member 28 is integrally formed of a hot water supply pipe 33 that opens forward and a pair of housing side connection portions 28A. The flow path in the hot water supply pipe 33 opens at the front end and is formed along the axial center, and is a dead end at the back. A pair of connecting pipes 36 are formed in the back of the hot water supply pipe member 28 in the left-right direction, that is, toward the housings 25 and 26, as shown in FIG. 10, and communicate with the interior of the hot water supply pipe 33. Yes. Both connecting pipes 36 are connected to both housings 25, 26 and communicate with the other introduction chamber (upper introduction chamber 32) formed inside both housings 25, 26. Further, check valves 37 and 38 are accommodated in the connecting pipes 36, respectively, so as to prevent back flow from the housings 25 and 26 side to the hot water supply pipe member 28 side.

  Further, the housing side connection portion 28A of the hot water supply pipe member 28 is also symmetrical in the form of a semi-annular shape on both the left and right sides of the hot water supply pipe 33 and the upper half circumference around the connecting pipes 36, similarly to the water supply pipe member 27 side. It is formed in a shape. The housing-side connection portion 28A in the hot water supply pipe member 28 and the housing-side connection portion 27A in the water supply pipe member 27 have the same form, and the mounting holes (not shown) are also arranged in the same manner and have the same diameter.

  Next, the first and second housings 25 and 26 will be described. Both the housings 25 and 26 have housing body portions 25A and 26A that are formed symmetrically. A pair of introduction chambers 31 and 32 are formed in both housing body portions 25A and 26A symmetrically in the vertical direction. The lower introduction chambers 31 in both housing body portions 25A and 26A communicate with the water supply pipe 29 and the branch pipe 30 of the water supply pipe member 27, respectively, and the upper introduction chamber 32 communicates with the hot water supply pipe 28 of the hot water supply pipe member 28, respectively. Yes.

  In both housings 25 and 26, connection receiving portions 25B and 26B are vertically symmetrical and integrally formed at portions of the water supply pipe member 27 and the hot water supply pipe member 28 facing the housing side connection portions 27A and 28A, respectively. . Each connection receiving portion 25B, 26B is formed with an opening through which the corresponding connecting pipe 34, 36 can be inserted via a seal ring. These openings are the upper introduction chamber 32 and the lower introduction chamber 31 in both housings 25, 26. Communicating with Each of the connection receiving portions 25B and 26B has a semi-annular shape that aligns with each of the housing side connection portions 27A and 28A on the water supply pipe member 27 and hot water supply pipe member 28 side, and each has an attachment hole that matches each attachment hole. The water supply pipe member 27 and the hot water supply pipe member 28 are assembled to the housings 25 and 26, respectively, by screwing them through the attachment holes.

  Thus, both housing side connection parts 27A and 28A in the water supply pipe member 27 and the hot water supply pipe member 28 have the same vertically symmetrical form, and the connection receiving parts 25B and 26B in the both housings 25 and 26 are also respectively. In this embodiment, the water supply pipe member 27 and the hot water supply pipe member 28 can be exchanged vertically with respect to both housings 25 and 26 since they are vertically symmetrical and formed in the same form.

  As shown in FIG. 10, in both housings 25 and 26, storage chambers 39 and 40 for storing the mixing valve bodies 10 and 11 are formed between the upper and lower introduction chambers 31 and 32 along the front-rear direction. Both the storage chambers 39 and 40 have a circular cross section, and are formed so as to open forward in the first housing 25 and open backward in the second housing 26. The valve bodies 10 and 11 can be inserted from the respective opening surface sides.

  The mixing valve bodies 10 and 11 have cylindrical valve bodies 10A and 11A that are fitted in the storage chambers 39 and 40, and the internal spaces thereof are mixing chambers 10B and 11B. Both mixing chambers 10B and 11B are formed so as to open toward the rear side in the first housing 25 and to open toward the front side in the second housing 26.

  The valve bodies 10A and 11A are rotatable around the axis in the storage chambers 39 and 40, and introduction openings 10C and 11C pass through the outer peripheral surface along the circumferential direction. 32 and the mixing chambers 10B and 11B can communicate with each other. However, in this embodiment, as shown in FIG. 10, the shapes of the opening portions 10C and 11C formed in the valve bodies 10A and 11A are different, and the first housing 25 side has a reinforcing piece at the center. Although it has 41, the large opening over the range corresponded to about half a circumference is formed. On the other hand, the introduction opening portion 11C on the second housing 26 side is divided into two portions, and the opening angles thereof are varied widely.

  The storage chambers 30 and 40 of the valve main bodies 10A and 11A have a bottom surface at the back in the fitting direction, and a shaft 42 is formed coaxially from the bottom surface as shown in FIG. Both shafts 42 protrude outward from both housings 25 and 26, and these are connected to drive portions (not shown in detail) of stepping motors 43 and 44 mounted on the outer surfaces of both housings 25 and 26. . Both stepping motors 43 and 44 are connected to a control device (not shown), and the rotation direction and rotation angle of both mixing valve bodies 10 and 11 can be separately controlled by a control signal from the control device. As a result, both stepping motors 43 and 44 include a state in which the stepping motors 43 and 44 are closed with respect to the corresponding introduction chambers 31 and 32, and the communication amount of the introduction openings 10C and 11C is adjusted to control the mixing ratio of hot water and water. it can.

  An attachment receiving portion 45 is formed at the entrance of the storage chamber 39 on the rear surface of the first housing 25, and a first outlet pipe 47 for connecting to the hot water supply pipe 1 is connected thereto. A connection flange 47 </ b> A is formed overhanging at the connection end portion of the first outlet pipe 47, and can be aligned with the attachment receiving portion 45. Both ends of the connection flange 47A have screw tightening attachment holes, and the first lead-out pipe 47 is connected by screwing into the attachment receiving portion 45 side. The first outlet pipe 47 is formed so as to protrude rearward from the first housing 25 and then bend downward. And the lower end part is connected to the hot water supply pipe 1.

  On the second housing 26 side, the storage chamber 40 described above opens to the front surface of the second housing 26 (see FIG. 7), and around the opening portion is attached in the same form as the attachment portion receiving portion 45 on the first housing 25 side. A receiving portion 46 is formed (see FIGS. 1 and 3). A second lead-out pipe 48 connected to a pipe leading to the bathtub 16 is connected to the attachment receiving portion 46 in a state of protruding forward. A connection flange 48 </ b> A having the same form as that of the first lead-out pipe 47 (including a mounting hole for screw tightening) is formed on the end portion of the second lead-out pipe 48. From this, the first outlet pipe 47 and the second outlet pipe 48 can exchange their mounting positions with respect to both the housings 25 and 26. In addition, the two outlet pipes 47 and 48 can be attached to the corresponding attachment receiving portions 45 and 46 by being inverted 180 degrees.

  The operation and effect of the present embodiment configured as described above will be described. The water supplied from the water supply pipe 1 enters the water supply pipe member 27 through the water supply pipe 29 and is supplied to the hot water storage tank 2 through the branch pipe 30 and through both the connecting pipes 34 to both housings 25, 26. Are introduced into the lower introduction chamber 31. On the other hand, hot water from the hot water storage tank 2 enters the hot water supply pipe member 28 through the hot water supply pipe 33 and is introduced into the upper introduction chambers 32 of the housings 25 and 26 through both the connecting pipes 34.

  When the hot water is filled in the bathtub 16 or when hot water is used through the hot water faucet device, when a control signal is output from the control device (not shown) to both stepping motors 43 and 44, both stepping steps are performed. The motors 43 and 44 rotate the mixing valve bodies 10 and 11 around the shaft 42 by a predetermined angle to angularly displace the introduction openings 10C and 11C. Thereby, since the communication amount of both the introduction chambers 31 and 32 and the mixing chambers 10B and 11B is adjusted, the mixing ratio of hot water and water is controlled to a set value. The hot water having a predetermined temperature mixed in the mixing chambers 10B and 11B in this manner is supplied to the bathtub 16 and the hot water supply line 19 from the first outlet pipe 47 or the second outlet pipe 48 or through both outlet pipes 47 and 48.

  By the way, as described above, the housing side connection portions 27A and 28A and the corresponding connection receiving portions 25B and 26B are standardized so that the mounting positions of the water supply pipe member 27 and the hot water supply pipe member 28 can be exchanged with respect to both the housings 25 and 26. ing. For this reason, when the mixing valve unit U has the specification shown in FIG. 1 (first specification), the water supply pipe member 27 is arranged on the lower side, and the hot water supply pipe member 28 is arranged on the upper side. In this specification, the water supply pipe 29 is directed downward, the branch pipe 30 is directed backward, and the hot water supply pipe 33 is directed forward. On the other hand, from the specification shown in FIG. 1, as shown in FIG. 2, the water supply pipe member 27 is arranged on the upper side and the hot water supply pipe member 28 is arranged on the lower side, and the opening direction of the branch pipe 30 and the hot water supply pipe 33 is changed. In order to avoid this, it is possible to switch to the mounted specification (second specification) with the left and right sides interchanged. That is, in the second specification shown in FIG. 2, the water supply pipe 29 faces upward, and the branch pipe 30 and the hot water supply pipe 33 face rearward or forward as in the first specification. Note that, as in the second specification, the left and right sides are switched when the water supply pipe member 27 and the hot water supply pipe member 28 are mounted. However, it is possible to change from the first specification to a specification to be mounted without switching the left and right sides. In that case, the direction of the water supply pipe 29 can be changed upward, the branch pipe can be changed to the front, and the hot water supply pipe can be changed to the rear (third specification: not shown).

  Thus, by selecting the attachment positions of the water supply pipe member 27 and the hot water supply pipe member 28 with respect to both the housings 25 and 26, it corresponds to the layout of the pipes respectively leading to the water supply pipe line 1, the hot water storage tank 2, and the hot water supply pipe line 19. be able to. Therefore, according to the mixing valve unit U of the present embodiment, the degree of freedom with respect to the piping layout is increased.

  In the first specification and the second specification (including the third specification), the upper introduction chamber 32 and the lower introduction chamber 31 are interchanged with each other in a room where water and hot water enter. It is necessary to change the direction of rotation or use a dedicated mixing valve for each specification.

  As described above, in the present embodiment, the hot water supply pipe member 28 and the water supply pipe member 27 can be attached to both the housings 25 and 26 by changing the left and right in both the first specification and the second specification. In this way, since the direction of the branch pipe 30 and the hot water supply pipe 28 can be switched back and forth, the degree of freedom in piping layout can be further increased.

  Further, in the present embodiment, the connection flanges 47A and 47A and the housing-side mounting receiving portions 45 and 46 are standardized so that the mounting positions of the first and second lead-out pipes 47 and 48 can be changed. Yes. For this reason, as shown in FIG. 3, the first lead-out pipe 47 is disposed on the rear surface side of the first housing 25 and the second lead-out pipe 48 is disposed on the front side of the second housing 26. As shown, the first lead-out pipe 47 can be switched to another specification in which the second lead-out pipe 48 is disposed on the front surface of the second housing 26 and the second lead-out pipe 48 is disposed on the rear surface of the first housing 25. Thus, the degree of freedom for the piping layout can be further increased.

  In either specification, both lead-out pipes can be attached by changing the direction by 180 degrees. In that case, the direction of the first outlet pipe 47 can be switched up and down.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said Example, although the 2nd outlet pipe 48 was set as the pipe line which leads to the bathtub 16 in the mixing valve unit U, when the bathtub 16 is not provided in a hot water supply circuit, the said site | part is separately used for the closing means. You may make it close.
(2) In the above embodiment, the mixing valve unit is shown as having a pair of housings 25 and 26, but it may be constituted by a single housing.

DESCRIPTION OF SYMBOLS 1 ... Water supply pipe 10 ... 1st mixing valve body 10B, 11B ... Mixing chamber 11 ... 2nd mixing valve body 19 ... Hot water supply pipe 25 ... 1st housing 26 ... 2nd housing 27 ... Water supply pipe member 28 ... Hot water supply pipe member DESCRIPTION OF SYMBOLS 29 ... Supply pipe 31 ... Lower introduction chamber 32 ... Upper introduction chamber 33 ... Hot water supply pipe 47 ... 1st outlet pipe 48 ... 2nd outlet pipe U ... Mixing valve unit

Claims (3)

A water supply pipe member provided with a water supply pipe protruding from the water supply pipe line;
A hot water supply pipe member provided with a hot water supply pipe connected to the hot water supply pipe line;
The water supply pipe member and the hot water supply pipe member are detachably attached, and the inside of the water supply pipe or the hot water supply pipe communicates with the water supply pipe or the hot water supply pipe, and the mixing ratio of water and hot water in the introduction chamber is adjusted. A mixing valve body, and a housing having a mixing chamber formed in communication with a lead-out pipe that leads the mixed hot water mixed by the mixing valve body to the outside,
The mixing valve unit, wherein the water supply pipe member and the hot water supply pipe member can be exchanged with each other and attached to the housing. A pair of the housings are provided, one of which is a first housing to which a first outlet pipe is detachably attached, and the other is a second outlet pipe that constitutes the outlet pipe together with the first outlet pipe. The second housing attached;
The water supply pipe member and the hot water supply pipe member are both attached to the first and second housings, and the water supply pipe and the hot water supply pipe communicate with one side of the introduction chambers of the first and second housings, respectively. And
The first lead-out pipe and the second lead-out pipe communicate with the mixing chambers of the first and second housings, respectively, and can be attached to both the housings by exchanging with each other. The mixing valve unit according to claim 1.   At least one of the first lead-out pipe, the second lead-out pipe, the hot water supply pipe member, and the water supply pipe member can be attached to the corresponding housings by being inverted 180 degrees. The mixing valve unit according to claim 2.

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