JP6636342B2 - Repeater for non-polar conversion of circulation adapter - Google Patents

Description

  The present invention relates to a repeater for non-polarity conversion of a circulation adapter attached between a circulation adapter assembled in a bathtub and a water heater installed outdoors or the like.

  In a general home or the like, a bathtub system having a reheating (circulation) function is configured to heat the water in the bathtub by circulating the water between the bathtub and the outdoor water heater at the time of reheating. In such a hot water supply system, a circulation adapter (circulation metal fitting) mounted on the bathtub is provided with a discharge port and a suction port for discharging and sucking hot water from the inside of the bathtub, and an outgoing pipe and a return pipe from the water heater on the outside of the bathtub. Are provided with two outer pipe connection ports. Then, at the time of reheating, the hot water discharged from the water heater is supplied to the circulation adapter via the going pipe and discharged into the bathtub from the discharge port, while the hot water in the bathtub sucked from the suction port of the circulation adapter is returned to the return pipe. To be returned to the water heater.

  By the way, in the conventional circulation adapter, a non-polar type as shown in Patent Literature 1 and a polar type as shown in Patent Literature 2 are well known.

  The non-polar type circulation adapter always discharges hot and cold water that has flowed into the adapter from the outer pipe connection port into the bathtub, even if the outgoing pipe is connected to either of the two outer pipe connection ports. On the other hand, the hot water in the bathtub is sucked into the adapter from the suction port, flows out from the remaining one outer pipe connection port (the other outer pipe connection port), and is returned to the water heater via the return pipe. Has become.

  In the polarized type circulation adapter, one of the two outer pipe connection ports is set to an outer pipe connection port dedicated to the outgoing pipe (outgoing side), and the other is set to an outer pipe connection port dedicated to the return pipe (return side). The hot and cold water flowing from the outgoing outer pipe connection port is discharged from the discharge port into the bathtub, and the hot and cold water in the bathtub sucked from the suction port is discharged from the return outer pipe connection port. In other words, in the case of a polar circulating adapter, the return pipe is connected to the outgoing outer pipe connection port and the outgoing pipe is connected to the return outer pipe connection port due to carelessness when assembling the outer pipe. In such a case, there occurs a problem that hot water is discharged from the suction port of the adapter into the bathtub and hot water in the bathtub is inadvertently sucked from the discharge port.

JP-A-10-47883 JP 2009-68775 A

  In the non-polar type circulation adapter, there is no problem that the piping connection point is mistaken, and the piping connection work can be easily performed.However, since it is necessary to incorporate a complicated valve mechanism inside, the adapter itself is used. However, there is a problem that the structure becomes complicated and large.

  On the other hand, since the polar type circulation adapter does not incorporate a complicated mechanism such as a valve, the structure can be simplified and the device can be downsized. However, as described above, since the connection points of the two outgoing pipes and return pipes are limited, it is necessary to carefully check the pipe connection position, which increases the burden on the operator and makes the pipe connection work difficult. There was a problem of becoming.

  The present invention has been made in view of the above-mentioned problems, and provides a repeater for non-polarity conversion of a circulation adapter that can simplify piping connection work while simplifying and reducing the size of the circulation adapter itself. The purpose is to do.

  In order to achieve the above object, the present invention has the following features.

[1] A relay for non-polarity conversion of a circulation adapter provided between a circulation adapter attached to a bathtub and a water heater,
An outgoing port connected to the outgoing outer tube connection port of the circulation adapter,
A return port that is connected to the return outer tube connection port of the circulation adapter,
First and second connection ports having one connection port connected to a water supply port of the water heater and the other connection port being connected to a suction port of the water heater;
And a valve mechanism for causing the hot and cold water flowing from the one connection port to flow out of the outgoing port and the hot water and water flowing from the return port to flow out of the other connection port. Repeater for non-polarity conversion.

[2] an outlet room provided corresponding to the outlet,
A return port chamber provided corresponding to the return port,
A first connection port chamber provided corresponding to the first connection port and communicating with the outgoing port chamber and the return port chamber, respectively;
A second connection port chamber provided corresponding to the second connection port, and further communicating with the outgoing port chamber and the return port chamber,
A first outgoing check valve that allows the flow of hot water from the first connection port chamber to the outflow port chamber and prevents the flow of hot water in the opposite direction; and a second connection port chamber. A second outgoing check valve that allows the flow of hot water from the outlet port to the outlet port and prevents the flow of hot water in the reverse direction, and the flow of hot water from the return port chamber to the first connection port chamber. A first return-side check valve that permits and prevents the flow of hot water in the opposite direction, and allows the flow of hot water from the return port chamber to the second connection port chamber, and the flow of hot water in the reverse direction 2. The repeater for non-polarity conversion of the circulating adapter according to the above item 1, further comprising a second return-side check valve for preventing the occurrence of air leakage.

[3] a casing partitioned into four chambers, the outlet chamber, the return chamber, the first connection chamber, and the second connection chamber,
A communication port is formed in a partition wall between the first connection port chamber and the outgoing port chamber in the casing, and the first outgoing check valve is provided in the communication port,
A communication port is formed in a partition wall between the second connection port chamber and the outgoing port chamber in the casing, and the second outgoing check valve is provided in the communication port,
A communication port is formed in a partition wall between the first connection port chamber and the return port chamber in the casing, and the first return-side check valve is provided in the communication port.
The circulation according to the above item 2, wherein a communication port is formed in a partition wall between the second connection port chamber and the return port chamber in the casing, and the communication port is provided with the second return-side check valve. Repeater for non-polarity conversion of adapter.

[4] The first connection port chamber and the outgoing port chamber are constituted by a continuous conduit, and the first outgoing check valve is provided between the first connecting port chamber and the outgoing port chamber in the conduit. Is provided,
The second connection port chamber and the outgoing port chamber are constituted by a continuous conduit, and the second outgoing check valve is provided between the second connecting port chamber and the outgoing port chamber in the conduit. ,
The first connection port chamber and the return port chamber are configured by a continuous pipe, and the first return-side check valve is provided between the first connection port chamber and the return port chamber in the pipe. ,
The second connection port chamber and the return port chamber are configured by a continuous pipe, and the second return-side check valve is provided between the second connection port chamber and the return port chamber in the pipe. 3. The repeater for non-polarity conversion of the circulation adapter according to the above item 2.

[5] a first member, and a second member fitted and assembled to the first member,
The first member is formed with the outgoing port, and the second member is formed with the return port,
The method according to any one of the preceding items 1 to 4, wherein a dimension between the outgoing port and the return port is changed by changing a fitting amount of the second member to the first member. Repeater for non-polarity conversion of circulation adapter.

  According to the repeater for non-polarity conversion of the circulation adapter of the invention [1], the hot and cold water flowing from one of the first and second connection ports is discharged from the outflow port, and is suctioned from the other connection port. The outlet water and return water are configured to be sucked from the return port, so the outlet and return ports are connected to the outer and outer pipe connection ports of the polar circulation adapter, and are non-polar. Can be achieved. For this reason, the pipes such as the outgoing pipe and the return pipe from the water heater may be connected to any of the first and second connection ports, so that the pipe connection work can be performed easily and smoothly. Furthermore, since a polarized circulation adapter can be used, the structure of the adapter itself can be simplified and downsized.

  According to the repeater for non-polarity conversion of the circulating adapter of the inventions [2] to [4], the above effects can be obtained more reliably.

  According to the repeater for non-polarity conversion of the circulation adapter of the invention [5], since the first member 61 having the outgoing port and the second member having the return port are combined with each other, By adjusting the amount of fitting between the two members, it is possible to change the interval between the outgoing port and the return port. For this reason, by adjusting the amount of fitting between the first and second members in accordance with the size between the outer pipe connection ports of the circulation adapter to which the repeater is assembled, it is possible to reliably assemble the various types of circulation adapters, Versatility can be improved.

FIG. 1 is a diagram for explaining a bathtub system employing a repeater for non-polarity conversion of a circulation adapter according to a first embodiment of the present invention. FIG. 2 is a side view showing the repeater for non-polarity conversion of the first embodiment. FIG. 3 is a side sectional view of the repeater for non-polarity conversion in the first embodiment. FIG. 4 is a horizontal cross-sectional view showing a state in which an outgoing pipe is connected to a first connection port in the repeater for non-polarity conversion according to the first embodiment, and FIG. 4A is a plan cross-sectional view corresponding to an upper hollow portion. (B) is a plane sectional view corresponding to a lower hollow portion. FIG. 5 is a plan sectional view showing a state in which an outgoing pipe is connected to a second connection port in the non-polarity conversion repeater according to the first embodiment, and FIG. 5A is a plan sectional view of a portion corresponding to an upper hollow portion. FIG. 2B is a plan sectional view of a portion corresponding to the lower hollow portion. FIG. 6 is a block diagram showing a repeater for non-polarity conversion according to the first embodiment. FIG. 6A is a block diagram showing a state in which an outgoing pipe is connected to a first connection port, and FIG. It is a block diagram of the state which connected the going pipe to the mouth. FIG. 7 is a side sectional view showing an assembled state with a circulation adapter in a repeater for non-polarity conversion according to a second embodiment of the present invention. FIG. 8 is a rear view showing the repeater for non-polarity conversion of the second embodiment. FIG. 9 is a rear sectional view showing the repeater for non-polarity conversion of the second embodiment. FIG. 10 is a circuit diagram of a repeater for non-polarity conversion according to the second embodiment. FIG. 10A is a circuit diagram showing a state in which an outgoing pipe is connected to a first connection port, and FIG. FIG. 3 is a circuit diagram in a state where a going pipe is connected. FIG. 11 is a rear cross-sectional view of the repeater for non-polarity conversion according to the second embodiment in a state in which a dimension between an outgoing port and a return port is changed.

<First embodiment>
1 and 2 are views showing a repeater P1 for non-polarity conversion of a bathtub circulation adapter according to a first embodiment of the present invention. As shown in both figures, the non-polarity conversion repeater P1 of the present embodiment is attached to a bathtub circulation adapter 9 that is assembled to the bathtub side wall in a penetrating state. Although the circulating adapter 9 is of a polar type, the polar circulating adapter 9 can be handled in the same manner as the non-polar type by adopting the non-polarity conversion repeater P1 of the present embodiment. ing.

  The repeater P1 for non-polarity conversion of the present embodiment includes a substantially box-shaped casing 1. In the first embodiment, the left side is the “front side” and the right side is the “rear side” when viewed in FIG. 1, and the near side (the upper side in FIG. 2) is the “upper side” and the far side (the lower side in FIG. 2). Is described as “lower side”.

  An outgoing port 2a and a return port 2b are provided on both sides of the front end of the casing 1 so as to protrude forward, and a first connection port 31 and a second connection port 32 are provided on both sides of the rear end so as to protrude rearward. Is provided.

  FIG. 3 is a side cross-sectional view showing the non-polarity conversion repeater P1, and FIGS. 4A and 5A are cross-sectional views corresponding to the cross section taken along line AA of FIG. FIG. 4B and FIG. 5B are cross-sectional views corresponding to the cross section taken along the line BB of FIG. 3, and show the upper hollow part of the repeater P1 for non-polarity conversion. FIG. 6 is a block diagram of the repeater P1 for non-polarity conversion. As shown in FIGS. 1 to 6, the inside of the casing 1 is divided into upper and lower two layers by a partition wall 11, and an outlet chamber 21 a is formed in an upper hollow portion above the partition wall 11 so as to correspond to the outlet 2 a. In addition, a return port chamber 21b corresponding to the return port 2b and independent of the outgoing port chamber 21a is formed. The outlet chamber 21a is open to the outside via the outlet 2a, and the return chamber 21b is open to the outside via the return port 2b.

  In the lower hollow portion of the casing 1 below the partition wall 11, a first connection port chamber 311 is formed corresponding to the first connection port 31 and also corresponds to the second connection port 32, and the first connection port is provided. A second connection port chamber 321 independent of the port chamber 311 is formed. The first connection port chamber 311 is open to the outside via the first connection port 31, and the second connection port chamber 321 is open to the outside via the second connection port 32.

  The partition wall 11 of the casing 1 is formed with a communication port 411 communicating between the access port chamber 21a and the first connection port chamber 311. The communication port 411 is provided with a first output side check valve 41. I have. The check valve 41 allows the flow of hot water from the first connection port chamber 311 to the outlet port chamber 21a and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the outlet port chamber 21a to the first connection port chamber 311. It is configured to be able to.

  Further, a communication port 421 is formed in the partition wall 11 of the casing 1 to communicate between the access port chamber 21 a and the second connection port chamber 321, and a second output check valve 42 is attached to the communication port 421. ing. The check valve 42 allows the flow of hot water from the second connection port chamber 321 to the outlet port chamber 21a and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the outlet port chamber 21a to the second connection port chamber 321. It is configured to be able to.

  The partition wall 11 of the casing 1 has a communication port 511 communicating between the return port chamber 21b and the first connection port chamber 311. The communication port 511 has a first return-side check valve 51 attached thereto. ing. The check valve 51 allows the flow of hot water from the return port chamber 21b to the first connection port chamber 311 and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the first connection port chamber 311 to the return port chamber 21b. It is configured to be able to.

  Further, a communication port 521 communicating between the return port chamber 21b and the second connection port chamber 321 is formed in the partition wall 11 of the casing 1, and a second return-side check valve 52 is attached to the communication port 521. ing. The check valve 52 allows the flow of hot water from the return port chamber 21b to the second connection port chamber 321 and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the second connection port chamber 321 to the return port chamber 21b. It is configured to be able to.

  As will be described in detail later in the non-polarity conversion repeater P1 having this configuration, the hot and cold water flowing from one of the first and second connection ports 31 and 32 always flows out of the outgoing port 2a, It does not flow out from the return port 2b. When a suction force acts on the other of the first and second connection ports 31, 32, the hot water is not sucked from the discharge port 2a, but is always sucked from the return port 2b, and It is designed to be sucked out from the connection port.

  In the repeater P1 for non-polarity conversion according to the first embodiment, a portion from the first and second connection port chambers 311 and 321 to the outlet port chamber 21a is configured as an outgoing side circuit, and a portion from the return port 21b to the second port chamber 21a. The portion extending to the first and second connection port chambers 311 and 321 is configured as a return side circuit.

  In the present embodiment, a check valve 41, 42, 51, 52 that controls the flow of hot and cold water between the chambers 21a, 21b, 311 and 321 constitutes a valve mechanism.

  The non-polarity conversion repeater P1 having the above configuration is attached to the circulation adapter 9 as described above. As shown in FIG. 1, the circulation adapter 9 is attached to the side wall of the bathtub in a penetrating state, and includes a body 91 disposed outside the bathtub and a disk-shaped in-tub protrusion 92 disposed protruding from the inner wall surface of the bathtub. And The body 91 is provided with a forward-side outer tube connection port 91a and a return-side outer tube connection port 91b. Further, the in-tank protruding portion 92 has a discharge port 92a formed on the outer peripheral side surface thereof and a suction port 92b formed on the front side. The circulation adapter 9 is of a polar type as described above, and hot and cold water flowing into the adapter 9 from the outgoing-side outer pipe connection port 91a is discharged into the bathtub from the discharge port 92a, and is sucked from the suction port 92b. Hot water in the bathtub flows out from the return outer pipe connection port 91b.

  The outgoing port 2a of the non-polarity conversion repeater P1 is connected and fixed to the outgoing side outer pipe connection port 91a of the circulation adapter 9, and the non-polarity conversion repeater is connected to the return side outer pipe connection port 91b of the circulation adapter 9. The non-polarity conversion repeater P1 is assembled to the circulation adapter 9 such that the return port 2b of P1 is connected.

  Further, the outgoing pipe 95a and the return pipe 95b connected to the hot water supply port and the suction port of the water heater 95 are connected to the non-polarity conversion repeater P1, and the outgoing pipe 95a is connected to the first non-polarity conversion repeater P1. And the second connection port 31 or 32 may be connected to either connection port (one connection port), and the return pipe 95b is connected to the connection port (the other connection port) on which the outgoing pipe 95a is not connected. Will do.

  For example, as shown in FIG. 4 and FIG. 6A, the outgoing pipe 95a is connected to the first connection port 31 of the repeater P1, and the return pipe 95b is connected to the second connection port 32. When reheating is performed in this pipe connection state, in the outgoing circuit, high-temperature hot water discharged from the hot water supply port of the hot water supply device 95 passes through the outgoing pipe 95a and passes through the relay P1 in the outgoing circuit as indicated by the solid arrow mark. The water flows from the first connection port 31 into the first connection port chamber 311, pushes and opens the first outgoing check valve 41 by water pressure, passes through the communication port 411, and flows into the outgoing port chamber 21 a. The hot and cold water flowing into the outlet chamber 21a flows into the adapter through the outlet 2a through the outlet pipe connection port 91a on the outgoing side of the circulation adapter 9, and is discharged into the bathtub through the discharge port 92a. On the other hand, in the return-side circuit, as shown by the arrow mark of the broken line, the suction action of the water heater 95 causes the return pipe 95b and the return-side circuit of the repeater P1 to have negative pressure. As a result, the second return-side check valve 52 is opened, and hot water in the bathtub is sucked into the adapter from the suction port 92b of the circulation adapter 9 and the return port 2b of the repeater P1 is connected to the return-side outer pipe connection port 91b. Then, it flows into the return port chamber 21b. The hot and cold water flowing into the return port chamber 21b flows into the second connection port chamber 321 through the second return-side check valve 52 (communication port 521) opened by the suction action. The hot and cold water flowing into the second connection port chamber 321 flows out of the second connection port 32 and returns to the water heater 95 through the return pipe 95b. In this way, the hot water is circulated between the inside of the bathtub and the hot water supply device 95 to perform additional heating.

  Here, during this circulation, the return port chamber 21b has a negative pressure, and the first connection port chamber 311 has a positive pressure. For this reason, a back pressure is applied to the first return-side check valve 51 attached to the communication port 511 between the two chambers 21b and 311 to prevent the check valve 51 from being opened and to reliably maintain the closed state. Is done. Therefore, hot water in the first connection port chamber 311 can be reliably prevented from flowing back into the return port chamber 21b, and operation reliability can be improved. Similarly, since the outlet port chamber 21a has a positive pressure and the second connection port chamber 321 has a negative pressure, a back pressure is applied to the second outgoing check valve 42 attached to the communication port 421 between the two chambers 21a, 321. Then, the check valve 42 is prevented from being opened, and is reliably maintained in the closed state. Therefore, it is possible to reliably prevent the hot and cold water in the outlet port chamber 21a from flowing back into the second connection port chamber 321 and further improve the operation reliability.

  In addition, as shown in FIGS. 5 and 6B, when the outgoing pipe 95a is connected to the second connection port 32 of the repeater P1 and the return pipe 95b is connected to the first connection port 31 to perform reheating, In the side circuit, high-temperature hot water discharged from the hot water supply port of the water heater 95 as shown by the solid line arrow symbol passes through the outgoing pipe 95a from the second connection port 32 of the repeater P1 to the second connection port chamber 321. The water flows in, pushes and opens the second outgoing check valve 42 by water pressure, passes through the communication port 421, and flows into the outgoing port chamber 21a. Thereafter, in the same manner as described above, the hot water flows from the outgoing port 2a into the outgoing outer pipe connection port 91a of the circulation adapter 9, and is discharged from the discharge port 92a into the bathtub. On the other hand, in the return circuit, hot water in the bathtub is sucked into the adapter from the suction port 92b of the circulation adapter 9 by the suction action of the water heater 95 as indicated by the dashed arrow, and is returned from the return outer pipe connection port 91b. It flows into the return port chamber 21b through the return port 2b of the repeater P1. The hot water flowing into the return port chamber 21b flows into the first connection port chamber 311 through the first return-side check valve 51 (communication port 511) opened by the suction action. Hot water flowing into the first connection port chamber 311 flows out of the first connection port 31 and returns to the water heater 95 through the return pipe 95b. In this way, the hot water is circulated between the inside of the bathtub and the hot water supply device 95 to perform additional heating.

  Here, during this circulation, the return port chamber 21b has a negative pressure, and the second connection port chamber 321 has a positive pressure. For this reason, back pressure is applied to the second return-side check valve 52 attached to the communication port 521 between the two chambers 21b and 321 to prevent the check valve 52 from being opened and to reliably maintain the closed state. Is done. Therefore, the hot water in the second connection port chamber 321 can be reliably prevented from flowing back into the return port chamber 21b, and the operation reliability can be further improved. Similarly, since the outlet port chamber 21a has a positive pressure and the first connection port chamber 311 has a negative pressure, a back pressure is applied to the first outgoing check valve 41 attached to the communication port 411 between the two chambers 21a, 311. The check valve 41 is prevented from being opened, and is reliably maintained in a closed state. Therefore, it is possible to reliably prevent the hot and cold water in the outlet port chamber 21a from flowing back into the first connection port chamber 311, and it is possible to further improve the operation reliability.

  As described above, according to the non-polarity conversion repeater P1 of the first embodiment, the non-polarization can be easily achieved simply by assembling the polarizer circulating adapter 9. In other words, the outgoing pipe 95a or the return pipe 95b from the water heater 95 may be connected to any of the first and second connection ports 31 and 32 of the repeater P1, and the work of checking the connection position of the outgoing pipe 95a and the return pipe 95b Can be omitted, and the pipe connection work can be performed easily and smoothly.

  In addition, since a circulating adapter 9 having a simple structure and a polar structure without incorporating a complicated valve mechanism is used, the adapter itself can be simplified and downsized.

<Second embodiment>
FIGS. 7 to 10 are views for explaining a non-polarity conversion repeater P2 of a bathtub circulation adapter according to a second embodiment of the present invention. In the second embodiment, the left side as viewed in FIG. 7 is referred to as “front side” or “front side”, the right side as “rear side” or “back side”, the upper side as “upper side”, and the lower side as “lower side”. ".

  As shown in FIGS. 7 to 10, in the repeater P <b> 2 of the second embodiment, pipes arranged corresponding to the four sides of the upper, lower, left, and right sides of a substantially square shape in a front view (rear view) are annularly connected. A rectangular tube member 6 is provided. The rectangular tube member 6 is configured such that both side tube portions of a U-shaped (upward U-shaped) tube member 61 and both side tube portions of an inverted U-shaped (downward U-shaped) tube member 62 are fitted. Are formed by combining the two pipe members 61 and 62 with each other.

  An outlet 2a is formed at the lower center on the front side of the rectangular tube member 6 so as to protrude forward, and a return port 2b is formed at the upper center so as to protrude forward. Further, first and second connection ports 31 and 32 are formed at upper ends on both sides on the rear side of the rectangular pipe member 6 so as to protrude rearward.

  A portion corresponding to the outgoing port 2a inside the rectangular pipe member 6, that is, a portion of the U-shaped pipe member 61 is configured as the outgoing port chamber 21a, and a portion corresponding to the return port 2b, that is, an inverted U-shaped pipe. The middle portion of the upper end of the member 62 is configured as a return port chamber 21b. The access port chamber 21a and the return port chamber 21b are open to the outside via the access port 2a and the access port 2b, respectively. Further, portions corresponding to the first and second connection ports 31 and 32 inside the rectangular pipe member 6, that is, portions on both sides of the inverted U-shaped pipe member 62 are configured as first and second connection port chambers 311 and 321 respectively. Have been. The first and second connection port chambers 311 and 321 are opened to the outside through the first and second connection ports 31 and 32, respectively.

  In this way, the first connection port chamber 311 and the outgoing port chamber 21a are configured by a continuous pipeline, and the second connection port chamber 321 and the outgoing port chamber 21a are configured by a continuous pipeline. Further, the first connection port chamber 311 and the return port chamber 21b are configured by a continuous pipe, and the second connection port chamber 321 and the return port chamber 21b are configured by a continuous pipe.

  A first outgoing check valve 41 is attached to the duct between the outlet port chamber 21 a and the first connection port chamber 311 in the rectangular pipe member 6. The check valve 41 allows the flow of hot water from the first connection port chamber 311 to the outlet port chamber 21a and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the outlet port chamber 21a to the first connection port chamber 311. It is configured to be able to.

  Further, a second outgoing check valve 42 is attached to a pipe line of the rectangular pipe member 6 between the outgoing port chamber 21a and the second connecting port chamber 321. The check valve 42 allows the flow of hot water from the second connection port chamber 321 to the outlet port chamber 21a and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the outlet port chamber 21a to the second connection port chamber 321. It is configured to be able to.

  Further, a first return-side check valve 51 is attached to a pipe line between the return port chamber 21 b and the first connection port chamber 311 in the rectangular pipe member 6. The check valve 51 allows the flow of hot water from the return port chamber 21b to the first connection port chamber 311 and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the first connection port chamber 311 to the return port chamber 21b. It is configured to be able to.

  Further, a second return-side check valve 52 is attached to the duct between the return port chamber 21 b and the second connection port chamber 321 in the rectangular pipe member 6. The check valve 52 allows the flow of hot water from the return port chamber 21b to the second connection port chamber 321 and prevents the flow of hot water from the reverse direction, that is, the flow of hot water from the second connection port chamber 321 to the return port chamber 21b. It is configured to be able to.

  As will be described in detail later, in the repeater P2 for non-polarity conversion according to the second embodiment, similarly to the first embodiment, the hot and cold water flowing from one of the first and second connection ports 31 and 32 is used. Is always discharged from the discharge port 2a. Further, the hot and cold water sucked out from the other connection port is always sucked through the suction port 2b.

  Here, also in the non-polarity conversion repeater P2 of the second embodiment, similarly to the first embodiment, the portion from the first and second connection port chambers 311 and 321 to the exit port chamber 21a is configured as the outward circuit. At the same time, the portion from the return port 21b to the first and second connection port chambers 311 and 321 is configured as a return side circuit.

  In the second embodiment, a check valve 41, 42, 51, 52 for controlling the flow of hot and cold water between the chambers 21a, 21b, 311 and 321 constitutes a valve mechanism.

  The outgoing port 2a and the return port 2b of the repeater P2 for non-polarity conversion are connected to the outgoing outer pipe connecting port 91a and the returning outer pipe connecting port 91b of the circulating adapter 9 having polarity, respectively. Further, an outgoing pipe of the water heater is connected to one of the first and second connection ports 31 and 32 of the repeater P2, and a return pipe of the water heater is connected to the other (the other) (FIG. 1). reference).

  For example, as shown in FIG. 10 (a), when the outgoing pipe of the water heater is connected to the first connection port 31 of the repeater P2 and the return pipe is connected to the second connection port 32 to perform additional heating, In the circuit, high-temperature hot water discharged from the hot water supply port of the water heater as shown by solid-line arrows in the figure is supplied to the outgoing pipe, the first connection port 31 of the repeater P2, the first outgoing check valve 41, It flows into the adapter through the outlet chamber 21a, the outlet 2a, and the outer pipe connection port 91a on the outgoing side of the circulation adapter 9, and is discharged from the discharge port 92a into the bathtub. On the other hand, in the return circuit, the hot and cold water in the bath tub sucked from the suction port 92b of the circulation adapter 9 as shown by the dashed arrow in the drawing is the return outer pipe connection port 91b and the return port 2b of the repeater P2. The water is returned to the water heater through the return port chamber 21b, the second return-side check valve 52, the second connection port chamber 321, the second connection port 32, and the return pipe.

  Also during this circulation, as in the first embodiment, the return port chamber 21b has a negative pressure and the first connection port chamber 311 has a positive pressure, so that the first return-side check valve 51 is closed by back pressure. It is reliably maintained, and hot water in the first connection port chamber 311 is prevented from flowing back into the return port chamber 21b. Further, since the outlet chamber 21a has a positive pressure and the second connection port chamber 321 has a negative pressure, the second outlet check valve 42 is surely maintained in a closed state by the back pressure, and the inside of the outlet chamber 21a is maintained. Hot water is prevented from flowing back into the second connection port chamber 321.

  Further, as shown in FIG. 10 (b), when the outgoing pipe 95a is connected to the second connection port 32 of the repeater P2 and the return pipe 95b is connected to the first connection port 31 to perform reheating, the outgoing side circuit is used. In this case, the hot water discharged from the hot water supply port of the water heater as shown by the solid line arrow in FIG. 3 is supplied to the outgoing pipe, the second connection port 32 of the repeater P2, the second connection port chamber 321 and the second outflow port. The fluid flows into the adapter through the side check valve 42, the outlet chamber 21a, the outlet 2a, and the outlet pipe connection port 91a of the circulation adapter 9 and is discharged from the discharge port 92a into the bathtub. On the other hand, in the return circuit, the hot and cold water in the bath tub sucked from the suction port 92b of the circulation adapter 9 as shown by the dashed arrow in the drawing is the return outer pipe connection port 91b and the return port 2b of the repeater P2. The water is returned to the water heater through the return port chamber 21b, the first return-side check valve 51, the first connection port chamber 311, the first connection port 31, and the return pipe.

  Also during this circulation, as in the first embodiment, the return port chamber 21b has a negative pressure and the second connection port chamber 321 has a positive pressure, so that the second return-side check valve 52 is closed by back pressure. This is reliably maintained, and the hot water in the second connection port chamber 321 is prevented from flowing back into the return port chamber 21b. Further, the outlet port chamber 21a has a positive pressure, and the first connection port chamber 311 has a negative pressure. Therefore, the first outgoing check valve 41 is reliably maintained in a closed state by the back pressure, and the inside of the outlet port chamber 21a is maintained. Hot water is prevented from flowing back into the first connection port chamber 311.

  As described above, in the non-polarity conversion repeater P2 of the second embodiment, similarly to the above, it is possible to achieve non-polarity simply by assembling it with the polar adapter 9, and furthermore, as the circulation adapter 9, a simple polar adapter is provided. Since the adapter can be used, the adapter itself can be simplified and downsized.

  Furthermore, the repeater P2 of the second embodiment employs a rectangular tube member 6 in which a U-shaped tube member 61 and an inverted U-shaped tube member 62 are combined in an opposed state, and both tube members 61 and 62 are used. Since the return port 2b and the outgoing port 2a are formed respectively, the distance (dimension) between the outgoing port 2a and the return port 2b can be changed by adjusting the fitting amount between the two pipe members 61 and 62. it can. For example, as shown in FIG. 11, by reducing the amount of fitting between the two pipe members 61 and 62, the dimension between the outgoing port 2a and the return port 2b can be increased, and an outer pipe connecting port such as a large circulation adapter is used. It can be installed on a circulation adapter with a large space between them without any trouble. By adjusting the amount of fitting between the two pipe members 61 and 62 in accordance with the dimension between the outer pipe connection ports of the circulation adapter to be assembled in this way, it is possible to reliably assemble a variety of circulation adapters. Therefore, versatility can be improved, and product value can be further improved.

  In the present embodiment, one of the U-shaped tube member 61 and the inverted U-shaped tube member 62 is configured as a first member, and the other member (the other member) is defined as a second member. It is configured.

  In the above-described embodiment, a case has been described in which the outgoing port and the return port of the non-polarity conversion repeaters P1 and P2 are directly attached to the outer pipe connection port of the circulation adapter 9. However, the present invention is not limited thereto. The relay may be mounted at any position on the piping path between the circulation adapter and the water heater. In this case, for example, the outlet and return ports of the repeater for non-polarity conversion and the outer pipe connection port of the circulation adapter may be indirectly connected via a connection pipe.

  The repeater for non-polarity conversion of the circulation adapter of the present invention can be assembled when a non-polarization is applied to a polar circulation adapter.

1: casing 11: partition wall 2a: outlet 21a: outlet chamber 2b: return port 21b: return port chamber 31: first connection port 311: first connection port chamber 32: second connection port 321: second connection port Chamber 41: Outgoing-side first check valve 411: Communication port 42: Outgoing-side second check valve 421: Communication port 51: Return-side first check valve 511: Communication port 52: Return-side second check valve 521 : Communication port 9: Circulation adapter 91a: Outer side outer pipe connection port 91b: Return side outer pipe connection port 92a: Discharge port 92b: Suction port 95: Water heater P1, P2: Non-polarity conversion repeater

Claims (4)

A non-polar conversion repeater of a circulation adapter provided between the circulation adapter attached to the bathtub and the water heater,
An outgoing port connected to the outgoing outer tube connection port of the circulation adapter,
A return port that is connected to the return outer tube connection port of the circulation adapter,
First and second connection ports having one connection port connected to a water supply port of the water heater and the other connection port being connected to a suction port of the water heater;
And a valve mechanism for causing the hot and cold water flowing in from the one connection port to flow out from the outgoing port, and causing the hot water and water flowing in from the return port to flow out from the other connection port ,
A first member, and a second member fitted and assembled to the first member,
The first member is formed with the outgoing port, and the second member is formed with the return port,
The non-polarity conversion of the circulating adapter is characterized in that a dimension between the outgoing port and the return port is changed by changing a fitting amount of the second member to the first member . Repeater. An exit chamber provided corresponding to the exit,
A return port chamber provided corresponding to the return port,
A first connection port chamber provided corresponding to the first connection port and communicating with the outgoing port chamber and the return port chamber, respectively;
A second connection port chamber provided corresponding to the second connection port, and further communicating with the outgoing port chamber and the return port chamber,
A first outgoing check valve that allows the flow of hot water from the first connection port chamber to the outflow port chamber and prevents the flow of hot water in the opposite direction; and a second connection port chamber. A second outgoing check valve that allows the flow of hot water from the outlet port to the outlet port and prevents the flow of hot water in the reverse direction, and the flow of hot water from the return port chamber to the first connection port chamber. A first return-side check valve that permits and prevents the flow of hot water in the opposite direction, and allows the flow of hot water from the return port chamber to the second connection port chamber, and the flow of hot water in the reverse direction 2. The repeater for non-polarity conversion of a circulation adapter according to claim 1, further comprising a second return-side check valve for preventing the non-polarity. A casing partitioned into four chambers, the outlet chamber, the return chamber, the first connection chamber, and the second connection chamber;
A communication port is formed in a partition wall between the first connection port chamber and the outgoing port chamber in the casing, and the first outgoing check valve is provided in the communication port,
A communication port is formed in a partition wall between the second connection port chamber and the outgoing port chamber in the casing, and the second outgoing check valve is provided in the communication port,
A communication port is formed in a partition wall between the first connection port chamber and the return port chamber in the casing, and the first return-side check valve is provided in the communication port.
3. The communication device according to claim 2, wherein a communication port is formed in a partition wall between the second connection port chamber and the return port chamber in the casing, and the communication port is provided with the second return-side check valve. 4. Repeater for non-polarity conversion of circulation adapter. The first connection port chamber and the outgoing port chamber are constituted by a continuous conduit, and the first outgoing check valve is provided between the first connecting port chamber and the outgoing port chamber in the conduit. ,
The second connection port chamber and the outgoing port chamber are constituted by a continuous pipe, and the second outgoing check valve is provided between the second connecting port chamber and the outgoing port chamber in the pipe. ,
The first connection port chamber and the return port chamber are constituted by a continuous pipe, and the first return-side check valve is provided between the first connection port chamber and the return port chamber in the pipe. ,
The second connection port chamber and the return port chamber are configured by a continuous pipe, and the second return-side check valve is provided between the second connection port chamber and the return port chamber in the pipe. The repeater for non-polarity conversion of the circulating adapter according to claim 2.

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