JPS6028895Y2 - Air conditioning/heating water heater - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air-conditioning, heating, and water-heating system that performs air-conditioning, heating, and hot-water supply using one water-cooled heat pump and two chiller units.

This type of air-conditioning/heating/hot-water supply apparatus has a water-cooled heat pump type chiller unit connected to an air-conditioning/heating circuit and a hot water supply circuit, and each circuit is provided with a pump.

By operating the pump in the air conditioning circuit, cold water or hot water flows through the heat exchanger in the circuit for cooling or heating, and by operating the pump in the hot water supply circuit, hot water is supplied. It is designed to be supplied to areas to be supplied such as a bath or kitchen.

However, in conventional systems, the air-conditioning and heating circuits and the hot-water supply circuit were completely independent, so if the pump in the air-conditioning or heating circuit or the hot-water supply circuit broke down, heating, cooling or hot water operation would continue until the pump was repaired. The problem was that I couldn't do it.

The present invention was developed with attention to the above-mentioned circumstances, and its purpose is that even if either the pump in the cooling/heating circuit or the hot water supply circuit fails, the pump in the other circuit will continue to operate the cooling, heating, or hot water supply circuit. The present invention aims to provide an air-conditioning/heating/water heating device that can perform the following functions.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, 1 is a water-cooled heat pump type chilling unit, and a water heat exchanger 2 is provided inside this unit 1.

An electric three-way valve 4, a valve 5, a first fan coil unit 6, an air-conditioning pump 7, and an electric three-way valve 8 are sequentially connected to the water heat exchanger 2 via piping 3, forming an air-conditioning circuit A.
is configured.

Further, the inflow side and the outflow side of the first fan coil unit 6 are bypassed via a bypass pipe 9, and a second fan coil unit 10 is provided in the middle of the bypass pipe 9.
is connected.

Furthermore, the outflow side of the cooling/heating pump 7 and the valve 5
It is connected to the outflow side of the pump via a bypass pipe 11, and a solenoid valve 12 is installed in the middle of the bypass pipe 11.

Further, the electric three-way valve 4 is connected to the valve 1 via a pipe 13.
4, a hot water storage tank 15, a hot water supply pump 16, and the electric three-way valve 8 are connected to form a hot water supply circuit B.

Further, the electric three-way valve 4 is bypassed by bypass pipes 17.18, and a valve 19.20 is installed in the middle of these bypass pipes 17.18.

On the other hand, the inflow side of the cooling/heating pump 7 and the inflow side of the hot water supply pump 16 are bypassed by a bypass pipe 21, and a valve 22 is installed in the middle of the bypass pipe 21.

Therefore, in the above-described configuration, the cooling/heating pump 7 is operated during the cooling/heating operation, and as a result, the cold water or hot water produced by the water heat exchanger 2 in the unit 1 is supplied to the electric three-way valve 4 and the valve 5 as shown by the solid line arrow. , are sent to the first and second fan coil units 6.10 to cool or heat the room, and then sucked into the air-conditioning pump 7, and then from the air-conditioning pump 7 to the water heat exchanger via the electric three-way valve 8. Sent to 2.

Thereafter, cold water or hot water is circulated in the same way, and the heating and cooling operation continues.

In addition, during hot water supply operation, the hot water pump 16 is operated, and as a result, hot water is sucked into the hot water pump 16 from the hot water storage tank 15 as shown by the broken line arrow, and then from the hot water pump 16 via the electric three-way valve 8. Sent to water heat exchanger 2,
After being heated here! Hot water is supplied from the hot water supply port 23 via the three-way valve 4, the valve 14, and the hot water storage tank 15.

On the other hand, during the above-mentioned cooling/heating operation, if the cooling/heating pump 7 fails, the valve 22 of the bypass pipe 21 is opened, the valves 20 and 14 are closed, and the hot water supply pump 16 is operated.

As a result, cold water or hot water is sucked into the hot water supply pump 16 from the inflow side of the air conditioning pump 7 via the bypass pipe 21, and from this hot water supply pump 16, the electric three-way valve 8, the water heat exchanger 2, the bypass pipe 17, Baloo 7'19t 5,
The cooling and heating operation continues through the first and second fan coil units (6, 10).

Furthermore, if the hot water supply pump 16 fails during the hot water supply operation described above, the valve 22 of the bypass pipe 21 is opened and the valve 20 of the bypass pipe 18 is opened,
Also, the valves 19 and 5 are closed, and the heating and cooling pump 7 is operated.

As a result, the hot water flowing out from the hot water storage tank 15 is sucked into the air-conditioning pump 7 via the bypass pipe 21, and then from the air-conditioning pump 7 via the electric three-way valve 8, the water heat exchanger 2, and the bypass pipe 18. The hot water is sent to the hot water storage tank 15 and supplied from the hot water supply port 23.

As mentioned above, if either the cooling/heating pump 7 or the hot water supply pump 16 breaks down, the other pump 7 or 16 can be used to flow cold and hot water, so heating and cooling will continue until the pump is repaired. There is no need to interrupt operation or hot water supply operation.

Note that during the above-mentioned cooling/heating operation, when the indoor temperature reaches a predetermined temperature, the thermostat is turned off and the bypass pipe 11 is turned off.
The solenoid valve 12 is opened, and the cold and hot water is circulated as shown by the dashed-dotted arrow.

As explained above, the present invention connects the inflow sides of the cooling/heating pump and the hot water pump by a bypass pipe with an on-off valve in the middle, and when either the cooling/heating pump or the hot water pump breaks down, Since the on-off valve is opened to operate the other pump, even if one of the pumps fails, cold water or hot water can continue to flow through the circuit.

Therefore, unlike in the past, when a pump breaks down, the cooling/heating operation or the hot water supply operation is not interrupted until the repair is completed, which is extremely convenient.

[Brief explanation of the drawing]

The drawing is a schematic configuration diagram showing an air-conditioning, heating, and hot-water supply system that is an embodiment of the present invention. 1... Chiller unit, 2... Water heat exchanger, A... Air conditioning circuit, B... Hot water supply circuit, 7, 16... ...Pump, 22...
...Opening/closing valve, 21...Bypass pipe.

Claims (1)

[Scope of utility model registration request] A water-cooled heat pump chiller unit has an air-conditioning circuit and a hot-water supply circuit that are used as a common heat source for the water heat exchanger, and each circuit is provided with a pump, and the pump of the air-conditioning circuit and the hot-water supply circuit are connected to each other. The inflow side of the pump is connected by a bypass pipe having an on-off valve in the middle, and when one of the pumps breaks down, the on-off valve is opened and the other pump is operated. Device.