JP2002022270A - Heat pump type hot water feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat pump type hot water feeding device capable of adapting for a living environment of a user in which the user can utilize hot water under the most suitable circumstance. SOLUTION: There is provided a heat pump type hot water feeding device in which hot water within a hot water storing tank 1 is circulated in a condenser 7A constituting a heat pump 7 to increase its temperature and the hot water is stored in the hot water storing tank 1 to feed hot water. A plurality of different types of heating means 15, 18 and 21 other than the heat pump 7 are connected to the hot water storing tank 1. There is provided a control means 100 in which any of a plurality of types of heating means 15, 18 and 21 including the heat pump 7 is selected or combined to be operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump type hot water supply apparatus capable of supplying water by heating water by the heat of condensation of a refrigerant.

[0002]

2. Description of the Related Art In general, there is known a heat pump type hot water supply apparatus which circulates hot water in a hot water storage tank through a condenser constituting a heat pump to raise the temperature, stores the hot water in the hot water storage tank, and supplies hot water through a faucet or the like. I have.

[0003]

Since this type of hot water supply uses a heat pump, it is suitable for large-capacity hot water supply, but it takes time to raise the temperature of hot water in a hot water storage tank to a predetermined temperature. Not very suitable for instant hot water supply. Since the heat source of the heat pump is a commercial power source, there is a problem that power consumption costs are increased except when using midnight power.

Therefore, an object of the present invention is to provide a heat pump type hot water supply apparatus which solves the above-mentioned problems of the prior art, can cope with a user's living environment, and can use hot water in an optimal condition for the user. To provide.

[0005]

According to the first aspect of the present invention,
In a heat pump type hot water supply device that circulates hot water in a hot water storage tank to a condenser that constitutes a heat pump, raises the temperature, stores the hot water in the hot water storage tank, and supplies hot water, a plurality of different types of heating other than the heat pump are applied to the hot water storage tank. And a control means for connecting the means and selecting one of a plurality of types of heating means including a heat pump, or operating the heating means in combination.

According to a second aspect of the present invention, in the first aspect, the control means selects one of the various heating means having a high economical efficiency during use or operates the combined heating means in combination. Features.

[0007] The invention described in claim 3 is claim 1 or 2.
In the above description, an auxiliary water heater is provided for reheating the hot water supplied from the hot water storage tank when the hot water in the hot water storage tank is used.

According to a fourth aspect of the present invention, there is provided a heat pump type hot water supply apparatus for circulating hot water in a hot water storage tank through a condenser constituting a heat pump to raise the temperature, storing the hot water in the hot water storage tank and supplying hot water. A solar heat collector for circulating hot water in the hot water storage tank, an electric heater connected to a solar power generation system having a solar panel for heating hot water in the hot water storage tank, and a hot water storage tank. When using hot water, select or combine an auxiliary water heater for reheating the hot water supplied from the hot water storage tank and any one of various heating means of a heat pump, a solar heat collector, an electric heater and an auxiliary water heater. And control means for operating the device.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the control means selects one of the various heating means, which has a high economical efficiency during use, or operates the combined heating means in combination. And

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a hot water storage tank, 2 is a gas water heater, and 3 is an oil water heater. Hot water storage tank 1,
The gas water heater 2 and the oil water heater 3 each have a pipe 4,
City water is supplied via 5 and 6. 33 is a pressure reducing valve.

A heat pump 7 is connected to the hot water storage tank 1, and the temperature of the hot water in the hot water storage tank 1 is raised through the heat pump 7.

That is, the heat pump 7 has a refrigeration cycle including a compressor, an evaporator, a decompressor, and a condenser 7A, which are not shown, and uses the hot water in the hot water storage tank 1 to form a condenser 7A which constitutes the heat pump 7. The hot water is circulated through pipes 8 and 9 to raise the temperature, and the hot water is temporarily stored in hot water storage tank 1. The hot water in the hot water storage tank 1 becomes warmer from the upper part, and the lower part becomes warmer with a delay.

In this hot water supply system, the solenoid valve 14 at the inlet of the hot water storage tank 1 is normally opened. Hot water storage tank 1
When the downstream electromagnetic valve 13 is closed and the downstream electromagnetic valve 11 and the upstream electromagnetic valve 31 of the gas water heater 2 are opened, the above-mentioned city water is directly piped at the pressure without passing through the hot water storage tank 1. 5, the temperature flows through the solenoid valve 31 and the gas water heater 2 in this order, and the hot water is supplied through the solenoid valve 11. This solenoid valve 11;
When the electromagnetic valve 14 at the inlet of the hot water storage tank 1 is closed, and the electromagnetic valve 12 and the upstream electromagnetic valve 32 downstream of the oil hot water heater 3 and the electromagnetic valve 13 are opened, without passing through the hot water storage tank 1, The above-mentioned city water flows directly at the pressure through the pipe 6, the solenoid valve 32, and the oil hot water heater 3 in this order, and the temperature is raised.
And 13 are supplied. When the solenoid valves 11 and 12 are closed and the solenoid valve 14 and the solenoid valve 13 at the inlet of the hot water storage tank 1 are opened, the hot water heated in the hot water storage tank 1 is pushed up by the above-mentioned city water pressure. Thus, hot water flows in the order of the check valve 10 and the solenoid valve 13.

In this embodiment, the above-described heat pump 7
As another means for raising the temperature, a solar heat collector 15 that circulates the hot water in the hot water storage tank 1 to raise the temperature is connected to the upper portion 1A of the hot water storage tank 1 via pipes 16 and 17 and a pump P.

An electric heater 18 for raising the temperature of the hot water in the hot water storage tank 1 is connected to the lower portion 1B of the hot water storage tank 1, and the electric heater 18 is connected to the sun via a power supply cable 19 and a converter 20. An optical panel (solar cell) 21 is connected. These constitute a solar power generation system.

Further, the almost uppermost portion 1C of the hot water storage tank 1 and the gas water heater 2 are connected by a pipe 25 having a check valve 24. They are connected by a pipe 27 having a check valve 26.

In this configuration, the hot water in the hot water storage tank 1 can be additionally heated by the gas water heater 2 as needed. In this case, the solenoid valves 13 and 31 are closed, and the solenoid valves 14 and 11 are opened. For example, when the temperature of the hot water in the hot water storage tank 1 is low, the hot water is supplied to the gas water heater 2 through the check valve 24 and the pipe 25, where the hot water is reheated and the temperature is raised. Hot water is supplied.

The hot water in the hot water storage tank 1 can be additionally heated by the gas water heater 2 as needed. In this case, the solenoid valves 11 and 32 are closed, and the solenoid valves 14 and 12 are closed.
And the solenoid valve 13 is opened. Also in this case, when the temperature of the hot water is low, the hot water is supplied to the oil hot water heater 3 through the check valve 26 and the pipe 27, where the hot water is reheated and the temperature rises. Hot water is supplied.

In this embodiment, the heat pump 7, the solar heat collector 15, the electric heater 21, and the auxiliary water heater (for example,
It has a control means 100 for selecting any one of various heating means of the gas water heater 2, the oil water heater 3 and the like, or operating them in combination.

In the case of midnight, it is detected, and a compressor (not shown) of the heat pump 7 is driven by using electric power at midnight. According to this, hot water is stored in the hot water storage tank 1 by using the heat pump 7. Although it takes some time to store hot water, it is economical because late-night power is cheaper.

In the case of fine weather, it is detected and the solar heat collector 15 and the electric heater 21 are operated, and the hot water storage tank 1 is detected.
To store hot water.

In the solar heat collector 15, the pump P is driven to circulate the hot water in the hot water storage tank 1 to the solar heat collector 15 to increase the temperature. The electric heater 21 operates a photovoltaic power generation system including the solar panel 21 to start supplying power to the electric heater 21 to heat the hot water in the hot water storage tank 1 to increase the temperature. According to this, the consumption of the commercial power supply is suppressed. The electric heater 21 is also connected to a commercial power supply,
It goes without saying that the power supply is switched as needed.

When instantaneous hot water supply is requested, one of the gas hot water heater 2 and the oil hot water heater 3 is operated. Then, as described above, the hot water supplied from the hot water storage tank 1 is additionally heated by the gas water heater 2 or the oil water heater 3 and supplied.

The gas water heater 2 or the oil water heater 3 can instantly supply hot water by directly raising the temperature of city water without passing through the hot water storage tank 1 as described above. When the temperature is low (for example, 30 ° C.), the temperature can be raised by reheating and the hot water can be supplied, so that the fuel consumption of the gas water heater 2 or the oil water heater 3 is reduced as compared with the case where the city water is directly heated. Can be.

The above control is switched by the control means 100. The determination of the switching depends on, for example, whether or not the operation is economical. The control of the opening and closing of the various solenoid valves described above is executed by the control means 100.

Although the present invention has been described based on one embodiment, it is apparent that the present invention is not limited to this.

[0028]

According to the present invention, a user can efficiently store and supply hot water in an optimal state by taking advantage of each heat source.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing one embodiment of a heat pump type hot water supply apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Gas water heater 3 Oil hot water heater 7 Heat pump 7A Condenser 15 Solar heat collector 18 Electric heater 21 Solar panel (solar cell) 100 Control means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshinori Toya 1 Otsuki-cho, Ashikaga, Tochigi Prefecture Sanyo Electric Air Conditioning Co., Ltd. (72) Inventor Kensuke Matsumoto 1 Otsuki-cho, Ashikaga, Tochigi Prefecture Sanyo Electric Air Conditioning (72) Inventor Kiyoshi Koyama 1 Otsukicho, Ashikaga, Tochigi Prefecture Sanyo Electric Air Conditioning Co., Ltd. (72) Inventor Hideaki Mukada 1 Otsukicho, Ashikaga City, Tochigi Prefecture Sanyo Electric Air Conditioning Co., Ltd. (72) Inventor Yoshihiro Takizawa 1 Otsuki-cho, Ashikaga-shi, Tochigi Sanyo Electric Air Conditioning Co., Ltd. (72) Inventor Hideyuki Takayama 1-Otsuki-cho, Ashikaga, Tochigi Sanyo Electric Air Conditioning Co., Ltd. No. 1 Otsukicho, Sanyo Electric Air Conditioning Co., Ltd.

Claims (5)

[Claims] 1. A heat pump type hot water supply apparatus in which hot water in a hot water storage tank is circulated to a condenser constituting a heat pump to raise the temperature, and the hot water is stored in the hot water storage tank and supplied with hot water. A heat pump type hot water supply apparatus comprising a control means for connecting a plurality of different types of heating means, selecting one of the plurality of types of heating means including the heat pump, or operating in combination. 2. The heat pump type hot water supply apparatus according to claim 1, wherein the control means selects one of the various heating means having a high economical efficiency in use or operates in combination. 3. The heat pump hot water supply device according to claim 1, further comprising an auxiliary water heater for reheating the hot water supplied from the hot water storage tank when the hot water in the hot water storage tank is used. . 4. A heat pump type hot water supply device for circulating hot water in a hot water storage tank to a condenser constituting a heat pump to raise the temperature, storing the hot water in the hot water storage tank and supplying hot water, wherein the hot water in the hot water storage tank is circulated. A solar heat collector for raising the temperature of the hot water in the hot water storage tank; an electric heater connected to a solar power generation system having a solar panel for raising the temperature of the hot water in the hot water storage tank; An auxiliary water heater for reheating the hot water supplied from the hot water storage tank at the time of use, and any one of the above-mentioned heat pumps, solar heat collectors, electric heaters, and various heating means of the auxiliary water heater are selected or operated in combination. A heat pump type hot water supply apparatus comprising: 5. The heat pump type hot water supply apparatus according to claim 4, wherein said control means selects one of the various heating means and a heating means having a high economical efficiency at the time of use or operates in combination.