JP4148942B2 - Linked hot water system - Google Patents

Description

  The present invention relates to a connected hot water supply system that can connect a plurality of hot water supply units to realize a large hot water supply capacity.

  In a conventional hot water supply system of this type, a plurality of hot water supply units are connected in parallel with a common water supply pipe and hot water supply pipe. Specifically, the hot water supply unit includes a hot water supply device and a gantry that holds the hot water supply device. And each hot water supply unit is arrange | positioned so that it may mutually contact, and the water supply pipe and the hot water supply pipe are arrange | positioned in the mount under the hot water supply apparatus. Each hot water supply apparatus is connected to the water supply pipe and the hot water supply pipe.

  Also, among these hot water supply units, a circulation pump is built in the hot water supply unit located at the inlet side of the hot water supply pipe and on the outlet side of the hot water supply pipe, and the return pipe from the hot water supply pipe is connected to this pump, Hot water is constantly circulated through the hot water supply path from the hot water supply pipe to the return pipe. When hot water is constantly circulated in this way, hot water at a predetermined temperature can be immediately discharged when, for example, hot water is discharged from a currant in the middle of a hot water supply pipe.

The hot water supply capacity always changes depending on the amount of hot water consumed from the currant or the like. Therefore, it is not always necessary to operate all the hot water supply units simultaneously. Further, the hot water supply device of the hot water supply unit to which the pump is attached always operates during circulation of hot water. Thus, if the operation time of each hot water supply unit is different, there is a problem that the hot water supply unit that is always operating deteriorates earlier than other hot water supply units. Therefore, a controller is attached to a hot water supply unit equipped with a pump, and the operation time is adjusted so that the operation time of each hot water supply unit becomes uniform.
Japanese Patent Laying-Open No. 2003-42571 (FIG. 2)

  In the above conventional configuration, when more hot water supply capacity is required, it is not possible to add a hot water supply unit. This is because the shared water supply pipe and hot water supply pipe have a limited flow velocity, and hot water exceeding a predetermined hot water supply capacity cannot flow into the hot water supply pipe.

  In such a case, it is conceivable that a plurality of connecting blocks are further connected in parallel, with a connecting block as described in the above publication, to which a plurality of hot water supply units are connected. Thus, if the number of connecting blocks connected in parallel is increased, it is possible to flexibly cope with a case where a large hot water supply capacity is required.

  However, there are many types when a large hot water supply capacity is required. For example, a hot water circulation amount is not so necessary as in a bathhouse, but a large hot water supply capacity is required when filling a bathtub. Sometimes it is necessary to circulate a large amount of hot water like a hotel.

  As a connection block described in the above publication, simply connecting a plurality of connection blocks in parallel, a pump is installed in each connection block, even if the amount of circulation is not so much, A connected hot water supply system having a large amount of circulation capability is constructed, and only an extremely inefficient system can be constructed in terms of cost.

  It is also possible to eliminate the installation of pumps for all connecting blocks and to provide a circulation pump separately from the connecting blocks. However, in such a configuration in which a pump is separately provided, pumps with different circulation amounts must be prepared according to the circulation amount required by the installation location, and many types of pumps need to be prepared in stock. .

  Then, this invention makes it a subject to provide the connection hot water supply system which does not produce the above malfunctions in view of said problem.

In order to solve the above problems, a connected hot water system according to the present invention is configured to connect a predetermined number of hot water supply units by sharing a water supply pipe and a hot water discharge pipe to form a connection block. In a connected hot water system that controls the operation state of the hot water supply unit in the connection block by the provided controller and increases or decreases the hot water supply capacity of the entire connection block, the hot water supplied from the hot water pipe is connected in parallel with a plurality of connection blocks. Depending on the amount of circulation , include at least one connecting block with a built-in pump that returns hot water from the return pipe to the hot water supply unit and circulates hot water in the hot water supply path from the hot water pipe to the return pipe. It is characterized in that a number of them are connected to each other .

  By connecting a connection block with a circulation pump and a connection block without a pump in parallel, and increasing or decreasing the number of connection blocks with these pumps, the circulation rate is increased or decreased while maintaining the overall hot water supply capacity. I did it.

  Further, if all the pumps used in this system are of the same standard, it is not necessary to stock a plurality of types of pumps. In addition, if the motor for driving the pump is a DC motor or the like, the circulation amount of the pump can be increased or decreased within a predetermined range, and the circulation amount can be set continuously within a large range in combination with the combination of the number of pumps. it can.

  By the way, each controller is attached to each connection block. However, when a plurality of connection blocks are connected in parallel, for example, if the power switch of each controller is turned on at the time of start-up, the starting operation becomes troublesome.

  Therefore, it is desirable to provide a master control unit that supervises the controller of each connection block, and to start and stop the operation of each connection block by operating the master control unit.

  The master control may be installed anywhere, but from the viewpoint of appearance and environmental reliability, the master control unit is stored in one of the hot water supply units, and a remote control for operating the master control unit is provided for each. It is desirable to install in a place different from the installation place of the connecting block.

  As is apparent from the above description, the present invention can freely set the hot water circulation amount while ensuring the required hot water supply capacity when the hot water supply capacity is required much more than the conventional connected hot water supply system. It is possible to provide an efficient linked hot water supply system according to the installation location.

  Referring to FIG. 1, reference numerals 1, 2, and 3 denote connection blocks. The connection block 1 includes one main hot water supply unit 11 and a plurality of sub hot water supply units 12. These hot water supply units 11 and 12 are connected in parallel with a common water supply pipe 51 and hot water supply pipe 61. The main hot water supply unit 11 is provided with a controller 13 for individually controlling the operation time and hot water supply capacity of the hot water supply units 11 and 12 in the connection block 1. Further, the main hot water supply unit 11 is provided with a pump 91 for heating the hot water returned from the return pipe 8 by the connecting block 1 and circulating it again from the hot water supply pipe 61. Both pumps 91 are driven by a DC motor. Since the rotation speed of the DC motor can be easily adjusted, the circulation amount by the pump 91 can also be adjusted steplessly. In the illustrated example, two pumps are mounted, but one of the pumps 91 is operated alternately.

  The connection block 2 has exactly the same configuration as the connection block 1, and as shown in the drawing, the main hot water supply unit 21 is equipped with two pumps 92 together with the controller 23.

  Therefore, when circulating the hot water, one of the pumps 91 and one of the pumps 92 are operated to circulate the hot water. In the present embodiment, since the circulation amount by the two pumps 91 and 92 is sufficient as described above, the controller 33 is mounted on the main hot water supply unit 31 of the connection block 3, but the circulation pump is not mounted. I made it.

  The controllers 13, 23, and 33 are all connected to the master control unit 4. A remote control 41 is attached to the master control unit 4. For example, when a start operation is performed on the remote control 41, the master control unit 4 transmits a start signal to each of the controllers 13, 23, and 33. Each controller 13, 23, 33 receives this activation signal and enters a standby state where the main hot water supply units 11, 21, 31 and the auxiliary hot water supply units 12, 22, 32 in each connected block can be operated at any time.

  In addition, the pumps 91 and 92 are operated, the hot water returned from the return pipe 8 is heated by the connection blocks 1 and 2, and supplied to the currant 7 through the hot water supply main pipe 6. In addition, 5 is a water supply main.

  When any of the currants 7 is opened, the hot water in the circulation path is consumed, so that the controllers 13, 23, 33 and the master control unit 4 follow the predetermined program to the main hot water supply units 11, 21, 31 and the auxiliary hot water supply units. A predetermined one of 12, 22, and 32 is operated, and the consumed hot water is continuously supplied to the hot water supply pipe.

  When stopping the operation of these connecting blocks 1, 2, 3, a stop operation is performed on the remote controller 41. As a result, an operation stop signal is output from the master control unit 4 to each of the controllers 13, 23 and 33.

  By the way, although the master control unit 4 may be attached to any wall surface or the like, in order to improve the reliability with respect to the environment such as rainwater, in the present embodiment, among the plurality of sub-hot water supply units 12 of the connecting block 1 It was installed in one unit. The remote controller 41 may be installed away from the installation location of the connecting blocks 1, 2, 3 and at a location convenient for operation.

  In addition, this invention is not limited to an above-described form, You may add a various change in the range which does not deviate from the summary of this invention.

The figure which shows the structure of one embodiment of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection block 2 Connection block 3 Connection block 4 Master control unit 11 Main hot water supply unit 12 Sub hot water supply unit 13 Controller 21 Main hot water supply unit 22 Sub hot water supply unit 23 Controller 31 Main hot water supply unit 32 Sub hot water supply unit 33 Controller 41 Remote control

Claims (4)

A predetermined number of hot water supply units are connected together using a water supply pipe and a hot water discharge pipe to form a connection block, and the operation state of the hot water supply units in the connection block is controlled by a controller provided in the predetermined hot water supply unit in the connection block. In a connected hot water system that increases or decreases the hot water supply capacity of the entire connected block, multiple connected blocks are connected in parallel, hot water is returned from the hot water return pipe supplied from the hot water supply pipe to the hot water supply unit, and returned from the hot water supply pipe. A connected hot water supply comprising a connecting block having a pump that circulates hot water in a hot water supply path leading to a pipe, and including at least one connecting block that does not have a pump, and a number corresponding to the amount of circulation connected to each other. system.   The connected hot water supply system according to claim 1, wherein each of the pumps has the same maximum circulation rate and is configured to increase or decrease the circulation rate within a predetermined range.   3. A master control unit that supervises a controller of each connection block is provided, and the operation of each connection block is started and stopped by an operation on the master control unit. Connected hot water system described in 1. 4. The connected hot water supply system according to claim 3, wherein the master control unit is stored in one of the hot water supply units, and a remote controller for operating the master control unit is provided in a place different from the installation location of each connection block. .

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