JPS6014038A - Heat pump type hot-water supply apparatus - Google Patents

Abstract

PURPOSE:To prevent the hot-water supplying temperature from temperature dropping by the perfect separation of a hot-water from a cold-water in a hot-water storage tank. CONSTITUTION:A heat pump refrigerating cycle is utilized as a heating source, a hot- water and cold-water separating film 10 being freely transformable is arranged in a hot-water storage tank 9 to divide the storage tank 9 into a cold-water part 11 and a hot-water part 12, then the cold-water part 11, a pump 4, a water refrigeration medium heat exchanger 2, a heating tank 15, a three-way valve 16 and the hot-water storage tank 12 are connected in series, also a water circuit is formed by connecting the one end 16b of the three-way valve 16 to an inlet port 13 of the pump 4. The valve 16 is controlled due to the detecting of the water temperature in the tank 15, the one end 16a of the valve 16 is made open when the water temperature is higher than the preset temperature, further, the valve 16 is made close when the water temperature is lower than the preset temperature. Thereby, when a hot-water is supplied from a cock 7, the same quantity of cold-water for the supplied hot-water quantity is increased into the cold-water part 11 via the hot-water and cold-water separating film 10, accordingly, the mixing of the hot-water in the hot-water storage tank 12 with the cold-water in the cold-water part 11 can be avoided, the hot-water kept at the preset temperature can be continuously supplied from the cock 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a heat pump water heater that heats water by absorbing heat from outside air, and relates to improving hot water supply performance by establishing hot water separation in a hot water storage tank in a load.

[Prior art]

As shown in FIG. 1, a conventional heat pump water heater introduces high-quality high-pressure refrigerant discharged from a compressor 1 to a water-refrigerant heat exchanger 2, and transfers latent heat of condensation to water circulated by a pump 4 from a hot water storage tank 6. It is released and heats the water in the hot water storage tank to become a high-pressure liquid refrigerant.It passes through an expansion mechanism 9 and becomes a low-pressure liquid refrigerant.In the air heat exchanger 6, it absorbs latent heat of vaporization from the surrounding air and becomes a low-pressure gas refrigerant. It is sucked into the compressor 1. In the heat pot water heater configured as described above, the water in the hot water storage tank 6 gradually rises in temperature and reaches the required water temperature, but when hot water is discharged from the snake lower, the amount of hot water is as low as the amount of hot water dispensed. Long water is supplied into the hot water tank 6 from the water supply port 8,
For the barley that has been given a large amount of hot water, the hot water in the hot water storage tank 6 and the supplied cold water are mixed by the operation of the pump 4, and the subsequent temperature of the hot water from the serpentine lower is lowered, so that high temperature hot water is required. This had the disadvantage of causing inconvenience when pouring hot water into a bathtub.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention has been made to improve the above-mentioned drawbacks, and it is an object of the present invention to provide a heat pump water heater that completely eliminates hot water sI in a hot water storage tank and prevents the hot water temperature from becoming low F.

[Summary of the invention]

That is, a deformable hot water separation membrane is disposed in the hot water storage tank to prevent mixing with low temperature water supplied to the hot water storage tank as hot water is discharged, and a pump 4, a water refrigerant heat exchanger, and a part of the water separation membrane are also installed. The hot water circulates through a closed circuit consisting of a water-refrigerant heat exchanger, a heating tank, and a three-way valve, and the hot water heated to the supply water temperature is stored in the heating tank and transferred to the secondary hot water storage tank.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. Compressor 1. Water refrigerant heat exchanger2. In a water heater whose heating area is a heat pump constituted by an expansion mechanism 5° air heat exchanger B, a deformable hot water separation membrane 10 is disposed inside a hot water storage tank 9 for the water circulation circuit, and the inside of the hot water storage tank 9 is It is divided into a cold water section 11 that communicates with the water supply port 8 and a hot water storage section 12 that communicates with the lower tap water tap. Heating tanks 15 are connected in series, and a three-way valve 16 is connected to the heating tanks 15, one of which is connected to the hot water storage section of the hot water tank 9 and the other to the inlet section 16 of the pump 4. In the heat pump water heater configured as described above, water is supplied by controlling the three-way valve 16 to detect the water temperature in the heating tank 15, opening 16a if the water temperature is above the set hot water supply temperature, and opening 16b if the hot water temperature is below the set hot water supply temperature. The water in the cold water section in the hot water storage tank 9 is transferred to the water/refrigerant heat exchanger 2. Heating evening/ri 1
5. Three-way valve 16. The water is repeatedly circulated through the water circuit of the pump 4 until the set hot water supply temperature is reached, and when the set hot water temperature is reached, the hot water is sequentially delivered to the varnish in the hot water storage tank 9. The amount of water increases, and when it detects that the cold water section is running out, the operation of the heat pump water heater is stopped. When hot water is dispensed from the snake lower'/J, an increase in the cold water section 1↓ of the -C outlet occurs via the hot water separation membrane 10, and the hot water in the hot water storage section 12 and the cold water section upper 1 do not mix, and the Hot water at the set hot water temperature can be dispensed from the faucet.

〔Effect of the invention〕

As described above, according to the present invention, the deformable hot water separation membrane 10 is disposed inside the hot water storage tank 9 and is divided into the cold water section ti and the hot water storage section L2, and the cold water section 11 and the pump 4. Water refrigerant heat exchanger2. Heating tank 15. Three-way valve 16. The hot water storage parts 12 are connected in series, and one end 16b of the three-way valve 16 is connected to the suction port 1 of the pump 4.
The hot water storage section 12
It is possible to provide a heat pump water heater in which hot water at a set hot water supply temperature is stored and the hot water and cold water in the hot water storage tank 9 do not mix even when hot water is discharged from the snake lower or circulated by the pump 4.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the structure of a conventional heat pump water heater, Figure 2
The figure is a structural explanatory diagram of a heat pump water heater equipped with an embodiment of the present invention. Note that the same symbols in the figures indicate the same members. 1...Compressor, 2...Water refrigerant heat exchanger-14A unit, 6...
...Hot water tank, 4...Pump, 6...Air heat exchanger,
9... Hot water storage tank, 10... Hot water separation membrane, 15... Heating tank, 16... Three-way valve.

Claims (1)

[Claims] 1. A heat pump refrigeration cycle is used as the heating source, and a deformable hot water separation membrane (10) is arranged inside the hot water storage tank (9) to separate the cold water section (upper part) and the hot water storage section (12). Divide the cold water part (
11), a pump (4), a water refrigerant heat exchanger (2), a heating tank (15), a three-way valve (1 (S)), and a hot water storage section (2) are connected in series, and one end of the three-way valve (16) is connected in series. (16b) is connected to the suction port (16) of the pump (4) to form a water circuit. 2. The water temperature in the heating tank (15) is horizontally added to the three-way valve (1
6), and the three-way valve (16) closes when the water temperature exceeds the set temperature.
Open one end (16a) of the
42. The heat pump water heater according to claim 41, wherein the heat pump water heater has the following properties: