JPS6139587B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioning, heating, and water supply system, and more particularly to an air conditioning, heating, and water supply system that uses a refrigerant compressor and has a simplified piping system.

Previously, when combining a hot water supply circuit with an air conditioning system, it required the installation of a hot water pump, the construction of piping, and electrical work, making the work complex and requiring a large amount of installation space.

In order to improve this, a method was considered to incorporate the hot water pump into the box that houses the compressor, etc., but the number of piping and complexity remained, and simplification was desired. .

In response to the above-mentioned demands, the present invention aims to provide an air-conditioning, heating, and hot-water supply system whose piping can be simplified.

The configuration of the air conditioning/heating and hot water supply apparatus according to the present invention is such that a compressor 21, a four-way valve 22, a heat source side water heat exchanger 23, an expansion valve 26, 26a, and a load side water heat exchanger 27 are connected to form a refrigerant cycle. The hot water storage tank 2 is connected to the load side water heat exchanger 27, and the hot water supply pipe 14 and the hot water return pipe 15 are connected to the load side water heat exchanger 27.
The inside of the hot water storage tank 2 is opened to atmospheric pressure, and the hot water pipe 1 is connected to the hot water storage tank 2 via the hot water pipe 1.
The hot water supply faucet 11 is connected to the hot water tank 2 through the hot water supply pipe 10 and the hot water suction pipe 32 in the pipeline of the hot water storage tank 2.
The hot water supply pipe 10 and the hot water intake pipe 32 are connected to the middle of the hot water supply pipe 14, and a solenoid valve 29a is provided between this communication position and the load side water heat exchanger 27, A hot water supply pump 30 is provided in the hot water intake pipe 32.

Next, one embodiment of the present invention will be described in detail based on the drawings.

Here, FIG. 1 is an overall explanatory system diagram of an air conditioning, heating, and hot water supply apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a heat exchange system of the main body.

First, in Fig. 1, 1 is the main body, 2 is a hot water storage tank, 3 is a fan coil unit, 4 is a pumping well, 5 is a pumping pump, 6 is a suction pipe, 7 is a discharge pipe,
8 is a reduction pipe, and 9 is a reduction well.

10 is a hot water supply pipe, 11 is a hot water supply faucet, 12 is a water supply pipe related to a water supply pipe for heating and cooling, and 13 is a water supply pipe.
14 is a hot water supply pipe related to the hot water heating water supply pipe, 15 is a return pipe related to the same return water pipe, and 16 is a return pipe related to the load water return pipe. 41 is a manual operation section, and 42 and 44 are wirings.

That is, water that is pumped from the pumping well 4 to the main body 1 via the suction pipe 6 and the discharge pipe 7 by the pump 5 is used as loaded water for heat exchange within the main body 1, and is used as load water for heat exchange through the return pipe 8. The water is returned to the reduction well 9 through the water.

The main body 1 generates cold and hot water as load water, and also has a hot water supply function for supplying hot water to the hot water faucet 11 via the hot water pipe 10.

Therefore, when the above-mentioned hot and cold water is circulated through the water pipe 12, the fan coil unit 3, and the return pipe 13, the main body 1 performs air-conditioning and heating operation, and the interior of the main body 1 is circulated through the water pipe 14. When sending hot water to the hot water storage tank 2 which is open to atmospheric pressure, and circulating hot water from the hot water storage tank 2 to the main body 1 via the return pipe 15,
The main body 1 performs hot water heating operation. As shown in the figure, the hot water storage tank 2 is connected to the hot water storage tank 2 with a hot water supply pipe 14 located at the upper part and a hot water return pipe 15 located at the lower part.

The hot water supplied from the hot water faucet 11 is stored in the hot water tank 2.
The hot water is supplied via the hot water supply pipe 14 and the hot water supply pipe 10.

Further, the return water pipe 15 is joined to the return water pipe 13,
Both form a single return pipe 16 that communicates with the main body 1.

Next, in FIG. 2 illustrating the heat exchange system in the main body 1, 21 is a compressor, 22 is a four-way valve, 23 is a heat source side water heat exchanger, 24 and 24a are check valves, and 25 is a liquid receiver. , 26, 26a are expansion valves,
27 is a load side water heat exchanger.

Further, 28 is a circulation pump for transporting load water;
9 and 29a are electromagnetic valves related to control valves, 30 is a hot water supply pump, 31 is a hot water outlet pipe, and 32 is a hot water intake pipe.

Further, 43 is a control circuit, 44 to 48 are wirings, 49 is a pressure tank, and 50 is a pressure switch.

That is, during cooling, the compressor 21 related to the refrigerant compressor passes the refrigerant through the heat source side water heat exchanger 23, the check valve 24, and the liquid receiver 25 under the control of the four-way valve 22.
The pressure is reduced by the expansion valve 26, and the load side water heat exchanger 27
After exchanging heat with the four-way valve 22, the cycle returns to the compressor 21.

In addition, during space heating and hot water heating, the refrigerant circulation direction is switched by the four-way valve 22 so that the heat source side water heat exchanger 23 becomes an evaporator and the load side water heat exchanger 27 becomes a condenser. It passes through the valve 24a and the expansion valve 26a.

The above-mentioned discharge pipe 7 and return pipe 8 are connected to the heat source side water heat exchanger 23, and water from the pumping well 4 is used as loaded water.

In addition, a return pipe 16 is provided in the load side water heat exchanger 27.
Circulation pump 28 as a water pump that absorbs more water
The water that is sent from the source becomes the load water.

This load water is so designed that the water channel can be switched by solenoid valves 29 and 29a, and the water pipe 12 side is opened during cooling and heating, and the water pipe 14 side is opened when heating hot water, so that they are opened and closed in a contradictory manner. be.

When hot water is being supplied, the solenoid valve 29a is closed and the hot water pump 30 is connected from the hot water pipe 14 side to the hot water pipe 10 side.
The hot water tank 2 is configured to send hot water to the hot water tank 2 shown in FIG. 1 above.

That is, the hot water pipe 14 is branched into communication with a hot water outlet pipe 31 of the solenoid valve 29a and a hot water intake pipe 32 of the hot water supply pump 30.

In addition to the above, the control system of the air-conditioning, heating, and hot-water supply device according to the embodiment of the present invention will be described.
1 is provided to perform operations such as switching between cooling and heating operations, setting hot water heating, and starting and stopping the main body 1, and is connected to a control circuit 43 of the main body 1 through a wiring 42.

The water pump 5 is connected to a control circuit 43 through wiring 44 so that water pumping is controlled.

In addition, a compressor 21, a circulation pump 28, a solenoid valve 2
9, 29a and the hot water pump 30 are connected to the wiring 4.
5, 46, 47, and 48 are connected to the control circuit 43 as shown in the figure, and its operation is controlled.

The compressor 21 described above is connected to the circulation pump 2
8. It is set to be driven for the first time when the water pump 5 is controlled to be in the water supply state.

The above-mentioned hot water pump 30 will be described in detail as follows.

That is, the hot water supply pump 30 is operated by the above-mentioned pressure tank 49 and pressure switch 50 to operate the hot water supply faucet 11.
When hot water is used by the hot water supply pipe 10 and the pressure inside the hot water supply pipe 10 drops to the set ON pressure, it is activated and starts pressurizing, and the hot water supply faucet 11 is closed or throttled, and the hot water supply pipe 10 It is designed to operate smoothly and automatically, stopping when the internal pressure rises to the set off pressure.

Furthermore, the fact that the hot water pump 30 has a built-in check valve is typical of this type of automatic pump.

In addition, the hot water supply pump 30 is set to be able to supply hot water only during heating and cooling or when the compressor 21 is stopped, and does not supply hot water while heating hot water, so that low temperature water is not supplied. , which are controlled by a control circuit 43.

According to this embodiment, the hot water supply pipe 14 is also used as a suction pipe for the hot water supply pump 30, and when hot water is supplied, hot water is transferred from the hot water storage tank 2 to the main body 1, that is, to the hot water intake pipe 32. During heating, hot water is made to flow in the water supply pipe 14 in the opposite direction.

In this case, since the hot water pipe 14 is located at the upper part of the hot water storage tank 2 and communicates with it, the hot water inside the hot water storage tank 2 is used for hot water supply.
Hot water at a higher temperature is supplied. By sharing piping in the above manner, one water channel between the main body 1 and the hot water storage tank 2 can be saved compared to the case where the water supply pump 30 has a dedicated suction pipe. The piping connection port in
One of each can be omitted.

That is, in conjunction with the incorporation of the hot water pump 30 into the main body 1, the piping can be significantly omitted, simplifying the construction work and simplifying the entire system.
It is possible to expect great effects that are inextricably linked.

Taking all of the above into account, when the present invention adds a hot water supply circuit to the air conditioning system,
It is possible to obtain an air-conditioning, heating, and hot-water supply system in which the piping can be simplified, and it can be said that the invention has excellent practical effects.

[Brief explanation of the drawing]

FIG. 1 is an overall explanatory system diagram of an air conditioning, heating, and hot water supply apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a heat exchange system of the main body. 1... Main body, 2... Hot water storage tank, 3... Fan coil unit, 10... Hot water supply pipe, 11... Hot water supply faucet, 12... Water pipe, 13... Water return pipe, 14... Water supply pipe, 15... Hot water return pipe, 16... Return Pipe, 21... Compressor, 22... Four-way valve, 23... Heat source side water heat exchanger, 26, 26a... Expansion valve, 27... Load side water heat exchanger, 28... Circulation pump, 29a... Solenoid valve, 30... Hot water supply Pump, 32...
Hot water pipe.

Claims (1)

[Claims] 1 Compressor 21, four-way valve 22, heat source side water heat exchanger 23, expansion valves 26, 26a, load side water heat exchanger 2
7 is connected to form a refrigerant cycle, and the hot water storage tank 2 is connected to the load side water heat exchanger 27 via the hot water supply pipe 14 and the hot water return pipe 15, and the inside of the hot water storage tank 2 is brought to atmospheric pressure. At the same time, the hot water supply pipe 14 is placed in the upper part of the hot water storage tank 2, and the hot water return pipe 15 is located in the lower part of the hot water storage tank 2 so as to communicate with the hot water storage tank 2. In the one in which the hot water supply faucet 11 is provided through the pipe 32, the hot water supply pipe 1
0, the hot water intake pipe 32 is connected to the middle of the hot water supply pipe 14, a solenoid valve 29a is provided between this communication position and the load side water heat exchanger 27, and a hot water supply pump 30 is connected to the hot water intake pipe 32. An air-conditioning, heating, and water-heating device characterized by being provided with.