JPS5810938Y2 - Ray Danbouki Yutousouchi - Google Patents

Description

[Detailed description of the invention] This invention uses the engine's rotational energy to operate the refrigerant circuit, and uses the engine's cooling water to supply hot water or as a refrigerant heating source for a heat pump, thereby using fuel energy with high efficiency. This invention relates to an air-conditioning, heating, and water-heating system for the purpose of.

One embodiment will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes an engine that runs on kerosene fuel, and is used as a drive source for a compressor 3 connected via a connecting shaft 2.

A refrigerant pipe 4 connects the compressor 3 to an indoor heat exchanger 5, an expansion valve 6. A refrigerant circuit A is formed to which an outdoor heat exchanger 7 is connected.

Cooling of the engine 1 is performed by a cooling water circuit B formed by connecting a part of a kerosene-fueled boiler 9 connected to a water supply tank 8 to the engine through a cooling water pipe 10 and a cooling water circulation pump 11.

Hot water is sent from a part of the boiler 9 to each hot water tap via a hot water supply pipe 12.

Furthermore, a three-way valve 13 is provided between the outdoor heat exchanger A of the refrigerant circuit A and the compressor 3, and the refrigerant bypass circuit C is formed by connecting the heat exchanger 14 installed inside the boiler 9 with a pipe 15. are doing.

Next, to explain the operation of this embodiment, when the cooling engine 1 is operated, the compressor 3 connected to it is driven, and when the three-way valve 13 is closed on the bypass side, the outdoor heat exchanger 7 is operated as a condenser, and the indoor heat exchanger 7 is operated as a condenser. The heat exchanger 5 operates as an evaporator, and the refrigerant flows in the circuit A in the direction of the arrow 16,
Cooling operation starts.

Heating When the cooling/heating switching four-way valve installed at the outlet of the compressor 3 is switched, the refrigerant flows in the direction of the arrow 17, resulting in heating operation.

At this time, when the three-way valve 13 is operated to allow the refrigerant to flow to the bypass circuit C side, the refrigerant is heated in the heat exchanger 14 by the heat of the hot water in the boiler 9 and returns to the compressor 3. Heating capacity does not decrease due to a drop in outside temperature.

Water Supply Water supplied to the casing of the boiler 9 passes through the cooling water circuit B, is heated by the engine 1, becomes hot water, and returns to the boiler casing.

Therefore, as this process is repeated, the water temperature inside the housing will rise, but if the water temperature is low due to the amount of hot water used, the boiler 9 can be operated to heat the water.

If heating by the boiler 9 is not required, a similar effect can be obtained by using a hot water storage tank instead of the boiler 9.

Further, the same effect can be obtained by using gas, gasoline, etc. other than kerosene as the fuel for the engine 1.

As described above, according to the air-conditioning/heating/water supply device of the present invention, the following excellent effects can be expected.

■The energy contained in the fuel is used effectively, resulting in high efficiency and low maintenance costs.

Since the compressor is directly driven, the efficiency is higher than that of a system that operates a generator.

III. Cooling, heating, and hot water supply are possible with a single engine.

IV, it is possible to eliminate the reduction in heating capacity during heat pump operation.

Furthermore, the rotational energy of the engine can also be used as the driving source for the condenser cooling blower and cooling water circulation pump.

In addition, the air conditioning and hot water supply system of the present invention first uses an outdoor heat exchanger to obtain as much heat as possible from the air, and then uses a bypass circuit C to obtain heat from a heat exchanger that utilizes engine waste heat. The heating operation of the circuit can efficiently and effectively acquire heat, and has the practical effect of realizing energy-saving operation.

[Brief explanation of drawings]

The drawing is a schematic diagram of an apparatus showing an embodiment of the present invention. 1... Engine, 3... Compressor, 9... Boiler, A... Refrigerant circuit, B... Cooling circuit, C... ...Refrigerant bypass circuit.

Claims (1)

[Scope of utility model registration request] A compressor is driven by an engine, a heat pump refrigerant circuit is formed by the compressor, and a boiler is installed in the cooling circuit of the engine, and a boiler is installed in the boiler between an outdoor heat exchanger in the heat pump refrigerant circuit and the compressor. A refrigerant bypass circuit branched from the refrigerant circuit is installed, and the bypass circuit is equipped with a heat exchanger that heats the refrigerant during heating, especially when the outside temperature is low, and is selectively connected to the refrigerant circuit via a three-way valve. Air-conditioning, heating, and water heating equipment that can be connected separately.