JP2011137604A - Hot water control unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water control unit capable of easily removing air even when all of a plurality of joint pipes are disposed at a lower end of a housing. <P>SOLUTION: A hydro unit 3 of a warm water heating system 100 having a warm water circuit 2 for supplying the warm water heated in a heat pump unit 1 to the hydro unit 3 and returning the warm water flowing out from the hydro unit 3 into the heat pump unit 1, includes the housing 30, and the joint pipes 306-309 disposed at a lower end of the housing 30. The joint pipe 308 connected with a return pipe 25 in which the warm water from a radiator 4 and the like flows, and the joint pipe 309 connected with a return pipe 26 in which the warm water returning to the heat pump system 1 flows, are connected by a connection pipe 41, a pipe connecting section 52 and a connection pipe 42, and a roughly-horizontal part of the connection pipe 42 is connected to an air vent pipe 50 at an upper end of the housing 30, so that the air in the pipe can be discharged to the external from the air vent pipe 50. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a warm water control unit of a warm water heating system having a warm water circuit that supplies warm water heated in a heat pump unit to a heating terminal and returns warm water flowing out from the heating terminal into the heat pump unit.

  Conventionally, in a hot water heating system having a hot water storage tank, as a hot water control unit, an electrical component box for storing printed circuit boards and terminal block electrical components, and a hot water circuit box for storing piping, actuators, etc. constituting part of the hot water circuit It is installed on the side of the hot water storage tank.

  The hot water circuit box of the hot water control unit is provided with a plurality of joint pipes. And the piping for supplying the hot water from the heat pump unit to the piping in the hot water circuit box and the piping for supplying the hot water from the piping in the hot water circuit box to the heating terminal from the outside to the joint pipes Connected.

  Here, when the hot water filled in the hot water circuit contains air, this air may cause air biting by a pump, for example. Accordingly, it is necessary to appropriately discharge the air in the hot water pipe to the outside.

  In the conventional hot water control unit, for example, as in the hot water control unit disclosed in Patent Document 1, at least a part of the plurality of joint pipes is provided at the upper end of the hot water circuit box. Therefore, the air in the hot water pipe in the hot water circuit box is moved to the outside of the hot water circuit box through the pipe connected to the joint pipe from the outside, so that it is provided in the hot water circuit outside the hot water circuit box. Air can be easily vented at the air vent.

JP 2007-010241 A

  However, when all of the plurality of joint pipes provided in the hot water circuit box are provided at the lower end of the hot water circuit box, the hot water flows upward into the hot water circuit box and then flows downward. become. Therefore, in the hot water circuit box, it is necessary to provide a pipe that extends from the lower side to the upper side and then is folded back and extends downward. Then, there is a problem that the air in the pipe is stored in the folded portion and does not move to the outside of the hot water circuit box and cannot be vented.

  An object of the present invention is to provide a hot water control unit capable of easily bleeding air even when all of the plurality of joint pipes are provided at the lower end of the housing.

  A hot water control unit according to a first aspect of the present invention is a hot water control unit for a hot water heating system having a hot water circuit for supplying hot water heated in the heat pump unit to the heating terminal and returning hot water flowing out of the heating terminal into the heat pump unit. A first joint pipe to which a housing for housing a pipe constituting a part of the hot water circuit and a pipe disposed at the lower end of the housing for supplying hot water from the heat pump unit to the hot water circuit in the housing are connected. And a second joint pipe connected to a pipe for supplying hot water from the hot water circuit in the enclosure to the heating terminal, and hot water from the heating terminal arranged in the lower end of the enclosure. A third joint pipe to which piping for supplying the circuit is connected, and a pipe for supplying hot water to the heat pump unit from the hot water circuit disposed at the lower end of the casing. A hot water circuit in the housing, the first pipe disposed between the first joint pipe and the second joint pipe, the third joint pipe, and the fourth joint pipe; And at least one of the first pipe and the second pipe is connected to the air vent portion.

  In this hot water control unit, even if all of the joint pipes connecting the piping in the casing and the piping for connecting to the heat pump unit and the heating terminal are provided at the lower end of the casing, the piping in the casing is vented. Since it is connected to the part, the air in the pipe arranged in the housing can be easily discharged from this air vent part.

  The hot water control unit according to a second aspect of the present invention is the hot water control unit according to the first aspect of the present invention, wherein the air vent portion is connected to the pipe on the side including the hot water circuit arranged above the first pipe and the second pipe. It is connected.

  In this hot water control unit, air easily collects in the pipe having the highest portion among the pipes in the casing. Therefore, it is possible to vent the air efficiently by connecting the pipe in which the air easily accumulates to the air vent.

  The hot water control unit according to a third aspect of the present invention is the hot water control unit according to the first or second aspect of the present invention, wherein the pipe on the side including the hot water circuit disposed above the first pipe and the second pipe is a housing. It is arranged behind the other pipe in the inside.

  In this hot water control unit, the pipe on the side including the hot water circuit arranged above the first pipe and the second pipe is arranged behind the other pipes, and a large space is formed in the front in the housing. The Therefore, electrical components and the like can be arranged in the space.

  A hot water control unit according to a fourth aspect of the present invention is the hot water control unit according to any one of the first to third aspects, wherein the second pipe is connected to the air vent.

  In this hot water control unit, the water pressure in the pipe through which the hot water flowing out from the heating terminal flows is lower than the water pressure in the pipe through which the hot water supplied from the heat pump unit flows, and the water flows out from the heating terminal where air easily collects. An air vent is connected to the pipe through which hot water flows, so that air can be vented efficiently.

  A hot water control unit according to a fifth aspect of the present invention is the hot water control unit according to any one of the first to fourth aspects of the invention, wherein the hot water circuit in the housing includes a mixing valve provided in the first pipe, a second pipe, And a bypass pipe connecting the mixing valve, wherein at least one of the first pipe, the second pipe and the bypass pipe is connected to the air vent.

  In this hot water control unit, in the hot water heating system that can effectively use the heat held by the hot water flowing out from the heating terminal, even when all the joint pipes are provided at the lower end of the housing, the air can be easily removed.

  A hot water control unit according to a sixth aspect of the invention is the hot water control unit according to any one of the first to fifth aspects of the invention, wherein an air vent is provided outside the housing.

  In this warm water control unit, since the air vent is provided outside the housing, air can be easily vented outside the housing.

  A hot water control unit according to a seventh aspect of the present invention is the hot water control unit according to any one of the first to sixth aspects, wherein an air vent is provided above the housing.

  In this hot water control unit, the air vent is provided above the housing, and the air in the pipe spontaneously moves toward the air vent, so that the air can be vented more reliably.

  As described above, according to the present invention, the following effects can be obtained.

  In 1st invention, even if all the joint pipes which connect piping in a housing and piping for connecting to a heat pump unit or a heating terminal are provided in the lower end of a housing, piping in a housing is vented. Since it is connected to the part, the air in the pipe arranged in the housing can be easily discharged from this air vent part.

  Further, in the second invention, since the air vent is provided in the pipe in the casing of the hot water control unit in which the air tends to accumulate, the air can be vented efficiently.

  Moreover, in 3rd invention, piping by the side containing the hot water circuit arrange | positioned upward among 1st piping and 2nd piping is arrange | positioned back from other piping, and large space is ahead ahead in a housing. It is formed. Therefore, electrical components and the like can be arranged in the space.

  In the fourth aspect of the invention, since the air vent is connected to the pipe whose water pressure is low and air easily collects, the air can be vented efficiently.

  Moreover, in the 5th invention, even if all the joint pipes are provided in the lower end of a housing in the warm water heating system which can utilize effectively the heat which the warm water which flowed out from the heating terminal hold | maintains, it can bleed easily.

  In the sixth invention, since the air vent is provided outside the housing, air can be easily vented outside the housing.

  In the seventh invention, the air vent is provided above the housing, and the air in the pipe spontaneously moves toward the air vent, so that the air can be vented more reliably.

It is a mimetic diagram showing the composition of the warm water heating system provided with the warm water control unit concerning a 1st embodiment of the present invention. It is a front view of the hot water control unit contained in the hot water heating system of FIG. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit. It is a front view of the hot water control unit which concerns on 2nd Embodiment of this invention. It is an exploded view of a hot water control unit. It is an exploded view of a hot water control unit.

(First embodiment)
Hereinafter, based on a drawing, a warm water heating system provided with a warm water control unit concerning a 1st embodiment of the present invention is explained. Drawing 1 is a mimetic diagram showing the composition of the hot water heating system concerning a 1st embodiment of the present invention.

<Configuration of hot water heating system>
As shown in FIG. 1, a hot water heating system 100 connects a heat pump unit 1 that heats hot water, a heating unit 2 (heating terminal) such as a radiator or a floor temperature control panel, and the heat pump unit 1 and the heating unit 2. And a hot water circuit 3. The warm water circuit 3 supplies warm water heated in the heat pump unit 1 to the heating unit 2 and returns warm water flowing out from the heating unit 2 into the heat pump unit 1. The hot water circuit 3 includes a hot water control unit 4 for controlling the flow rate and temperature of the hot water supplied to the heating unit 2. The hot water heating system 100 also includes a hot water supply unit 5 that stores hot water for hot water supply.

  As shown in FIG. 1, the hot water heated in the heat pump unit 1 is supplied from the joint pipe 306 to the hot water control unit 4 via the connection pipe 20. And the warm water which flowed out toward the heating unit 2 from the joint pipe 307 of this warm water control unit 4 is supplied to the heating unit 2 through the connection pipe 21. The connecting pipe 21 is provided with a backup heater unit 22 for heating the hot water flowing through the connection pipe 21 and a three-way valve 23 used when supplying the hot water to the hot water supply unit 5.

  Hot water flowing out of the heating unit 2 is supplied from the joint pipe 308 to the hot water control unit 4 via the connection pipe 24. Then, the hot water flowing out from the joint pipe 309 of the hot water control unit 4 toward the heat pump unit 1 is returned into the heat pump unit 1 through the connection pipe 25.

  In the hot water control unit 4, a bypass pipe 32 (pipe) and a mixing valve 33 (actuator) are provided. Therefore, after the warm water flowing out from the heating unit 2 flows into the warm water control unit 4, a part of the warm water flows into the warm water control unit 4 from the heat pump unit 1 via the bypass pipe 32 and the mixing valve 33. Mixed with warm water. Therefore, the hot water heated in the heat pump unit 1 is mixed with the hot water supplied from the bypass pipe 32 and then flows out from the hot water control unit 4 toward the heating unit 2. The mixing valve 33 is used to adjust the temperature of the hot water supplied to the heating unit 2 by adjusting the amount of hot water from the bypass pipe 32 that is mixed with the hot water heated in the heat pump unit 1. It is done.

  In the hot water heating system 100, the hot water flowing out from the hot water control unit 4 toward the heating unit 2 can be supplied to the hot water supply unit 5 by switching the three-way valve 23 provided in the connection pipe 21.

<Configuration of hot water control unit>
FIG. 2 is a front view of the hot water control unit included in the hot water heating system of FIG. 1. The casing 30 of the hot water control unit 4 includes a sheet metal front plate 300, a right plate 301, a left plate 302, an upper plate 303, a lower plate 304, and a rear plate 305.

  3 to 8 are exploded views of the hot water control unit of FIG. FIG. 3 is a front view showing a state where the front side plate 300 is removed. FIG. 4 is a right side view showing a state in which the right side plate 301 is removed. FIG. 5 is a left side view showing a state in which the left side plate 302 is removed. FIG. 6 is a front view showing a state where the front panel 316 is removed from the state where the front side plate 300 of FIG. 3 is removed. FIG. 7 is a front view showing a state where an electrical component 38 and a plate-like member 312 described later are removed from the state where the front side plate 300 and the front panel 316 of FIG. 6 are removed. FIG. 8 is a rear view showing a state in which the rear side plate 305 is removed.

  As shown in FIGS. 2 to 8, joint pipes 306 to 309 and 311 are provided on the lower plate 304 disposed at the lower end of the housing 30.

  A connecting pipe 20 for supplying hot water from the heat pump unit 1 to the hot water circuit 3 in the housing 30 is connected to the joint pipe 306 (first joint pipe) from the outside. A connection pipe 21 for supplying hot water from the hot water circuit 3 in the housing 30 toward the heating unit 2 is connected to the joint pipe 307 (second joint pipe) from the outside.

  A connection pipe 24 for supplying hot water from the heating unit 2 to the hot water circuit 3 in the housing 30 is connected to the joint pipe 308 (third joint pipe) from the outside. A connecting pipe 25 for supplying hot water from the hot water circuit 3 in the housing 30 toward the heat pump unit 1 is connected to the joint pipe 309 (fourth joint pipe) from the outside. To the joint pipe 311, a water supply / drainage pipe used for supplying hot water to the hot water circuit 3 in the housing 30 or discharging hot water from the hot water circuit 3 is connected from the outside.

  As shown in FIG. 7, the connection pipe 39, the mixing valve 33, the connection pipe 44, the circulation pump 36, and the connection pipe 40 are disposed between the joint pipe 306 and the joint pipe 307. The pipe connection part A shows the connection part between the upper end of the joint pipe 306 and the lower end of the connection pipe 39, and the pipe connection part B shows the connection part between the upper end of the connection pipe 39 and the mixing valve 33, and the pipe connection part C Shows the connection between the mixing valve 33 and the right end of the connection pipe 44. A pipe connection portion D indicates a connection portion between the left end of the connection piping 44 and the suction side of the circulation pump 36, and a pipe connection portion E indicates a connection portion between the discharge side of the circulation pump 36 and the right end of the connection piping 40. A pipe connection portion F indicates a connection portion between the left end of the connection pipe 40 and the upper end of the joint pipe 307.

  Accordingly, the hot water supplied from the joint pipe 306 into the housing 30 of the hot water control unit 3 is supplied from the joint pipe 307 via the connection pipe 39, the mixing valve 33, the connection pipe 44, the circulation pump 36, and the connection pipe 40. It flows out toward the heating unit 2.

  Further, between the joint pipe 308 and the joint pipe 309, as shown in FIG. 8, there are a connection pipe 41, a flow sensor 37, a connection pipe 42, a branch pipe 52, a connection pipe 43, a branch pipe 54, and a connection pipe 43. Has been placed. The pipe connection part G indicates a connection part between the upper end of the joint pipe 308 and the lower end of the connection pipe 41, and the pipe connection part H indicates a connection part between the upper end of the connection pipe 41 and the suction side of the flow rate sensor 37. . Further, the pipe connection part I indicates a connection part between the discharge side of the flow sensor 37 and the right end of the connection pipe 42, and the pipe connection part J indicates a connection part between the lower end of the connection pipe 43 and the upper end of the joint pipe 309. ing.

  Accordingly, the hot water supplied from the joint pipe 308 into the housing 30 of the hot water control unit 3 is connected to the connection pipe 41, the flow sensor 37, the connection pipe 42, the branch pipe 52, the connection pipe 53, the branch pipe 54, and the connection pipe 43. And flows out from the joint pipe 309 toward the heat pump unit 1.

  Further, as shown in FIG. 4, the upper end of the bypass pipe 32 is connected to the side surface of the branch pipe 52 described above, and the lower end of the connection pipe 32 is connected to the mixing valve 33. A pipe connection portion K indicates a connection portion between the lower end of the bypass pipe 32 and the mixing valve 33. Thereby, the hot water in the branch pipe 52 can be supplied to the mixing valve 33 via the bypass pipe 32.

  As shown in FIG. 4, the upper end of the connection pipe 45 is connected to the lower end of the branch pipe 54 described above, and the lower end of the connection pipe 45 is connected to the joint pipe 311. The pipe connection portion L indicates a connection portion between the lower end of the connection pipe 45 and the upper end of the joint pipe 311. Thereby, water can be supplied into the hot water circuit 3 through the joint pipe 311 and the connection pipe 45, and water can be discharged from the hot water circuit 3 to the outside.

  Further, as shown in FIGS. 4 and 5, a joint pipe 310 is provided on the upper plate 303 disposed at the upper end of the housing 30. An air vent pipe 50 is connected to the joint pipe 310 from the outside. Accordingly, the air vent pipe 50 is provided outside the housing 30 and is provided above the housing 30. The connection pipe 42 disposed between the joint pipe 308 and the joint pipe 309 is connected to the joint pipe 310 via the connection pipe 55. The pipe connection portion M indicates a connection portion between the lower end of the joint pipe 310 and the upper end of the connection pipe 55. Thereby, the air accumulated in the connection pipe 42 can be discharged to the outside through the connection pipe 55, the joint pipe 310 and the air vent pipe 50.

  As shown in FIG. 7, the connection pipe 40 disposed between the joint pipe 306 and the joint pipe 307 extends upward from the left end connected to the joint pipe 307 in the pipe connection portion F, After that, it bends in the horizontal direction, further bends downward, extends downward, and its right end is connected to the circulation pump 36 at the pipe connection portion E.

  Further, as shown in FIG. 8, the connection pipe 42 arranged between the joint pipe 308 and the joint pipe 309 extends upward from the right end connected to the flow sensor 37 in the pipe connection portion I, After that, it bends in the horizontal direction, further bends downward, extends downward, and its left end is connected to the branch pipe 52. And the lower end of the connection pipe 55 is connected in the branch part 51 in the horizontal part provided in the upper end of the connection pipe 42.

  Here, in the housing 30, the horizontal part of the connection pipe 42 connected to the air vent pipe 50 is arranged at a position higher than the horizontal part provided at the upper end of the connection pipe 40. The horizontal portion of the connection pipe 42 is a pipe in the housing 30 (a pipe connecting the heat pump unit 1 and the heating unit 2 and a pipe other than the connection pipe 55 for connecting to the air vent pipe 50). It is placed at the highest position. Further, the horizontal portion of the connection pipe 42 is arranged behind the horizontal portion of the connection pipe 40.

  As shown in FIG. 8, the connection portion between the left end of the connection pipe 42 and the branch pipe 52, the connection portion between the branch pipe 52 and the upper end of the connection pipe 53, and the connection portion between the lower end of the connection pipe 53 and the branch pipe 54. , A connection part between the branch pipe 54 and the upper end of the connection pipe 43, a connection part between the branch pipe 54 and the upper end of the connection pipe 45, a connection part between the horizontal part of the connection pipe 42 and the branch part 51, and a branch part 51 and a connection pipe. The connection part with the lower end of 55 is connected by welding.

  As shown in FIGS. 4 and 5, a plate-like member 312 is disposed in the housing 30. The plate-like member 312 is provided so as to extend downward from the upper end of the housing 30, and has an upper portion 313 and a lower portion 314. The upper part 313 extends vertically downward from the upper end of the housing 30. The lower part 314 is inclined so as to be disposed forward from the lower end of the upper part 313 as it approaches the lower part. As shown in FIG. 6, the plate-like member 312 is arranged over the entire width direction of the housing 30. The upper portion 313 is provided with a holding member 315 having a holding plate 315a disposed at a position away from the front surface thereof.

  As shown in FIGS. 4 and 5, in the housing 30, an electrical component storage unit 3 </ b> A is provided in front of the plate-like member 312, and a hot water circuit storage unit 3 </ b> B is provided behind and below the plate-like member 312. Is provided.

  In the electrical component storage unit 3A, a printed circuit board 38b and a terminal block 38c connected to a main body remote control 38a provided on the front side plate 300 are stored. As shown in FIG. 6, the printed circuit board 38b is disposed on the front surface and the back surface of the holding plate 315a. In addition, the printed circuit board arrange | positioned at the back surface of the holding plate 315a is not illustrated. Further, the terminal block 38c is installed on the surface of the lower portion 314 as shown in FIG.

  As shown in FIGS. 3 to 8, the hot water circuit storage unit 3 </ b> B includes the bypass pipe 32, the mixing valve 33, the circulation pump 36, the flow sensor 37, and the connection pipes 39 to 45, 53, 55 (pipe) and the like. A hot water circuit is housed. The bypass pipe 32 and the connection pipes 39 to 45, 53, and 55 constitute a part of the hot water circuit 3. Further, as shown in FIG. 3, the bypass pipe 32 and the connection pipe arranged in the housing 30 are not arranged in front of the mixing valve 33 and the circulation pump 36.

  As described above, the electrical component storage unit 3A and the hot water circuit storage unit 3B are partitioned by the plate-like member 312. Accordingly, since the plate-like member 312 is disposed between the electrical components 38 such as the printed circuit board 38b and the terminal block 38c and all the pipe connection portions A to M, the plate-like member 312 is partitioned. Will be.

[Features of Hot Water Control Unit of First Embodiment]
As described above, in the hot water control unit of the first embodiment, all of the joint pipes 306 to 309 that connect the pipe in the casing 30 and the pipe for connecting to the heat pump unit 2 and the heating unit 3 are located at the lower end of the casing 30. Although provided, since the connection pipe 41 in the housing 30 is connected to the air vent 50, the air in the pipe disposed in the housing 30 can be easily discharged from the air vent 50.

  Further, in this hot water control unit 4, the connection pipe 41 has the highest portion of the pipes through which the hot water in the housing 30 flows, and the air is most likely to accumulate in the pipe among the pipes in the housing 30. By connecting the air vent pipe 50 to the air vent, air can be vented efficiently.

  Further, in this hot water control unit 4, since the connection pipe 41 in which the air is most likely to be accumulated in the pipe is disposed behind the other pipes in the casing 30, the electrical component 38 is disposed in the front, thereby the casing 30. Air can be easily removed while the electrical component 38 is accommodated therein.

  Further, since the water pressure in the connection pipe 41 through which the hot water flowing out from the radiator 4 or the hot water supply tank 5 flows is lower than the water pressure in the pipes in the other housings 30, air tends to accumulate in the pipes. By connecting the air vent pipe 50 to the air vent, air can be vented efficiently.

  In the hot water control unit 4, since the air vent pipe 50 is provided outside the housing 30, air can be easily vented outside the housing 30.

  In the hot water control unit 4, since the air vent pipe 50 is provided above the housing, the air accumulated in the pipe in the housing 30 spontaneously moves toward the air vent pipe 50, so that it is more reliable. Air can be removed.

(Second Embodiment)
Hereinafter, a hot water control unit according to a second embodiment of the present invention will be described based on the drawings. FIG. 9 is a front view of the hot water control unit. 10 and 11 are exploded views of the hot water control unit of FIG. In addition, the same code | symbol is attached | subjected about the element same as the element demonstrated in 1st Embodiment, and detailed description is abbreviate | omitted.

  FIG. 10 is a front view showing a state in which the front side plate is removed from the housing of FIG. FIG. 11 is a left side view showing a state in which the left side plate is removed from the housing of FIG. 9. As shown in FIG. 10, a plate-like member 1312 corresponding to the plate-like member 312 of the first embodiment is arranged on a part of the housing 30 in the width direction (right side from the center). Further, a left side plate 1312a is formed at a left end of the plate-like member 1312 as a part thereof.

  As shown in FIGS. 10 and 11, an electrical component storage portion 103 </ b> A is disposed in front of the plate-like member 1312, and a hot water circuit storage portion 103 </ b> B is provided on the left, rear, and lower sides of the plate-like member 1312. Has been placed. The electrical component storage unit 103A accommodates electrical components 38 such as the main body remote control 38a and the terminal block 38c, and is disposed in front of the plate member 1312. Further, accumulators such as the bypass pipe 32 and the mixing valve 33 and the respective connection pipes are housed inside the hot water circuit housing portion 103B, and are arranged on the left side, the rear side, and the lower side of the plate-like member 1312.

  In this embodiment, the connection pipe 140 disposed between the joint pipe 306 and the joint pipe 307 is connected via a connection pipe 155 to the joint pipe 310 to which the air vent pipe 50 is connected from the outside. In the housing 30, the horizontal portion of the connection pipe 140 connected to the air vent pipe 50 is positioned higher than the horizontal portion provided at the upper end of the connection pipe 142 disposed between the joint pipe 308 and the joint pipe 309. Has been placed. Further, the horizontal portion of the connection pipe 140 is a pipe in the housing 30 (a pipe connecting the heat pump unit 1 and the heating unit 2 and other than the connection pipe 155 for connecting to the air vent pipe 50). It is placed at the highest position. Further, the horizontal portion of the connection pipe 140 is disposed in front of the horizontal portion of the connection pipe 142.

  As shown in FIGS. 10 and 11, the electrical component storage portion 103 </ b> A and the hot water circuit storage portion 103 </ b> B are partitioned by a plate-like member 1312. Therefore, since the plate-like member 1312 is disposed between the electrical components 38 such as the main body remote control 38a and the terminal block 38c and all the pipe connection portions A to M, the plate-like member 1312 is partitioned. Will be.

[Characteristics of Hot Water Control Unit of Second Embodiment]
As described above, in the hot water control unit of the second embodiment, all of the joint pipes 306 to 309 that connect the pipe in the casing 30 and the pipe for connecting to the heat pump unit 2 and the heating unit 3 are located at the lower end of the casing 30. Although provided, since the connection pipe 140 in the housing 30 is connected to the air vent 50, the air in the pipe disposed in the housing 30 can be easily discharged from the air vent 50.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is indicated not only by the above description of the embodiments but also by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  In the above embodiment, the connection pipe 42, which is a pipe disposed between the joint pipe 308 and the joint pipe 309, is connected to the air vent pipe 50. However, the present invention is not limited to this, and for example, the joint pipe 306 and the joint The connection pipe 40, which is a pipe arranged between the pipe 307 and the pipe 307, may be connected to the air vent pipe 50, or the bypass pipe 32 may be connected to the air vent pipe 50. Further, a pipe disposed between the joint pipe 308 and the joint pipe 309 and a pipe other than the connection pipe 42 may be connected to the air vent pipe 50, or between the joint pipe 306 and the joint pipe 307. A pipe other than the connection pipe 40 that is an arranged pipe may be connected to the air vent pipe 50. In addition, both the pipe disposed between the joint pipe 308 and the joint pipe 309 and the pipe disposed between the joint pipe 306 and the joint pipe 307 are connected to air vent pipes provided separately. In addition, two or three of the pipe disposed between the joint pipe 308 and the joint pipe 309, the pipe disposed between the joint pipe 306 and the joint pipe 307, and the bypass pipe 32 are separately provided. May be connected to a vented air pipe.

  Moreover, in the said embodiment, although the air vent pipe 50 is provided in the exterior of the housing 30 and above the housing 30, the position of the air vent tube 50 can be changed. Therefore, the air vent pipe 50 may be provided inside the housing 30 or may be provided on the side of the housing 30.

  Moreover, in the said embodiment, although a warm water circuit has the bypass piping 32 and the mixing valve 33, it is not limited to this, The warm water circuit does not need to have the bypass piping 32 and the mixing valve 33.

  In the first and second embodiments described above, the example in which the hot water circuit includes the hot water supply unit and the backup heater unit has been described. However, the present invention is not limited to this, and the hot water circuit includes the hot water supply unit and the backup heater. It does not have to have a unit.

  If the present invention is used, the air accumulated in the piping provided inside the housing in the hot water control unit in which all the joint pipes are provided at the lower end of the housing can be easily discharged to the outside.

1 Heat pump system 2 Hot water circuit 3 Hydro unit (hot water control unit)
4 Radiators (heating terminals)
5 Hot water tank (heating terminal)
20, 21 Supply piping 25, 26 Return piping 30 Housing 32 Bypass piping 33 Mixing valve 36 Circulation pump (pump)
39, 40, 44 Connection piping (first piping)
41, 42 Connection piping (second piping)
50 Air vent pipe (air vent part)
51-53 Piping connection 306 Joint pipe (first joint pipe)
307 Joint pipe (second joint pipe)
308 Joint pipe (third joint pipe)
309 Joint pipe (4th joint pipe)

Claims (7)

A hot water control unit of a hot water heating system having a hot water circuit for supplying hot water heated in the heat pump unit to the heating terminal and returning warm water flowing out of the heating terminal into the heat pump unit,
A housing for housing a pipe constituting a part of the hot water circuit;
A first joint pipe, which is arranged at a lower end of the casing and to which a pipe for supplying hot water from the heat pump unit to a hot water circuit in the casing is connected;
A second joint pipe disposed at a lower end of the casing and connected to a pipe for supplying hot water from a hot water circuit in the casing to the heating terminal;
A third joint pipe, which is arranged at a lower end of the casing and to which a pipe for supplying hot water from the heating terminal to a hot water circuit in the casing is connected;
A fourth joint pipe disposed at the lower end of the housing and connected to a pipe for supplying hot water from the hot water circuit in the housing to the heat pump unit;
The warm water circuit in the enclosure is
A first pipe disposed between the first joint pipe and the second joint pipe;
A second pipe disposed between the third joint pipe and the fourth joint pipe;
At least one of said 1st piping and said 2nd piping is connected to the air bleeding part, The hot water control unit characterized by the above-mentioned.   2. The hot water control unit according to claim 1, wherein the air vent portion is connected to a pipe on a side including a hot water circuit disposed above the first pipe and the second pipe.   The pipe on the side including the hot water circuit arranged above the first pipe and the second pipe is arranged behind the other pipe in the casing. The hot water control unit described.   The hot water control unit according to claim 1, wherein the second pipe is connected to the air vent. The warm water circuit in the enclosure has a mixing valve provided in the first piping, and a bypass piping connecting the second piping and the mixing valve,
The hot water control unit according to any one of claims 1 to 4, wherein at least one of the first pipe, the second pipe, and the bypass pipe is connected to an air vent.   The hot water control unit according to any one of claims 1 to 5, wherein the air vent is provided outside the housing.   The hot water control unit according to any one of claims 1 to 6, wherein the air vent is provided above the casing.

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