JPS62266357A - Solar heat collecting device - Google Patents

Abstract

PURPOSE:To improve a convenience in use of a solar heat collecting device by a method wherein a thermal collecting circuit and a water circulation circuit are provided and a plurality of boiling thermistores are installed in a hot water storing tank. CONSTITUTION:A compressor 1, a coolant-water heat exchanger 2, a thermal distribution pipe 5, an expansion valve 7, a thermal collecting plate 8 and a thermal distributing pipe 10 are connected in this sequence to constitute a thermal collecting circuit. A hot water storing tank 13, a water circulation pump 14, a coolant-water heat exchanger 2b and a constant-temperature flow valve 16 are connected in a circle form to constitute a water circulation circuit. A plurality of boiling thermistors 15 are arranged in the hot water storing tank 13. Coolant gas compressed by the compressor 1 to its hot temperature and high pressure condition is fed to a coolant passage 2a of the coolant-water heat exchanger 2, is radiated to hot water contained in the hot water tank 13 flowing in a water passage 2b and then made as condensed liquid. Hot water stored in the hot water storing tank 13 is fed from a hot water outlet 17 to the water passage 2b of the coolant-water heat exchanger 2 through the water circulation pump 14, receives heat from the coolant and is heated. However, an amount of water is controlled in such a way as a specified hot water temperature may be attained under an action of the constant-temperature flow valve 16 and then returned back from a hot water return port 18 to the upper part of the hot water storing tank 13. A plurality of boiling thermistors 15 are selected and if an amount of hot water reaches the desired amount of hot water to be heated, a thermal coLlecting operation is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat collecting device using a heat pump cycle as a means for collecting solar heat.

2. Description of the Related Art A conventional heat collecting device using a heat pump cycle as a means for collecting solar heat has been constructed as shown in FIG.

That is, in FIG. 2, 1 is a compression machine, 2 is a refrigerant-to-water heat exchanger, which has a refrigerant side passage 2a and a water side passage 2b, and maintains the refrigerant side passage 2a and water side passage 2b in a heat transfer manner. are doing. 3rIi dryer, 4 is a self-seal coupling A, 5 is a heat collection outgoing pipe, 6 is a funnel shot coupling A, 7 is an expansion valve, 8 is a heat collection plate, which is composed of a fin tube, 1 is coated with a corrosion-resistant coating. ing. 9 is a one-shot coupling B110 is a heat collection return pipe, 11 is a self-sealing coupling B112 is an accumulation rake, and these are the compressor 1, the refrigerant side passage 2a of the refrigerant-to-water heat exchanger 2, the dryer 3, and the self-sealing cup. Ring A
4. Heat collection outward piping 5, heat collection return piping 10. The self-seal coupling 12 and the compressor 1 are connected in this order to form a heat collecting circuit.

13 is a hot water storage tank, 14 is a water circulation pump, and these are connected in an annular manner in the order of the hot water storage tank 13, the water circulation pump 14, the water 11t1 passage 2b of the refrigerant-to-water heat exchanger 2, and the hot water storage kunk 13 to form a water circulation circuit. are doing. Reference numeral 15 denotes a training length mister, which is attached to the lower part of the hot water storage tank 13.

Next, the operation of the heat collecting device configured as described above will be explained. The heat collecting operation is performed by driving the compressor 1 and the water circulation pump 14. That is,
The refrigerant gas compressed to high temperature and high pressure by the compressor 1 is sent to the refrigerant side passage 2a of the refrigerant-to-water pressure exchanger 2, where it flows through the water side passage 2b in a heat transfer relationship by the action of the water circulation pump 14. The heat is radiated to the hot water in the Menta 13 and condensed and liquefied. The condensed refrigerant is connected to the dryer 3, self-seal coupling A4, heat collection outgoing pipe 5, and one-shot coupling A.
6 and reaches the expansion valve 7, and as it passes through the expansion valve 7, the pressure is reduced, and the temperature and pressure become low, and it flows into the heat collecting plate 8. The refrigerant flowing into the heat collecting plate 8 absorbs heat from the sun and the atmosphere through the heat collecting plate 8 and sequentially evaporates into gas. Next, the refrigerant evaporated on the heat collecting plate 8 is transferred to the one-shot coupling B
9. Heat collection return piping 10. Self seal coupling B11
, and is sucked into the compressor 1 again through the accumulation rake 12. Thereafter, by repeating the same heat collection cycle, the hot water in the hot water storage tank 13 gradually rises in temperature, and the hot water in the hot water storage tank 1
When the temperature of the hot water supply in the hot water tank 3 rises to the set temperature, the aB raising thermistor 15 stops the heat collection operation.

Problems to be Solved by the Invention However, in the heat collecting device described above, the temperature of the entire hot water in the hot water storage tank 13 gradually rises; In summer, when the hot water supply load is low, the amount of hot water inevitably increases, resulting in large heat radiation loss and reduced heat collection efficiency. Further, since the temperature of the entire hot water supply in the hot water storage tank 13 gradually rises, there is a problem that hot water at a high temperature cannot be obtained if the elapsed time after the heat collection operation is short.

The present invention solves the above-mentioned problems. 1. A solar heat collector that can collect the amount of hot water that matches the hot water supply load, and can store hot water at a constant temperature from the top of the hot water storage tank, improving usability. The purpose is to provide a device.

Means for Solving the Problems In order to solve the above problems, the solar heat collection device of the present invention includes a compressor, a refrigerant-to-water heat exchanger, a heat collection outward pipe, an expansion valve, a heat collection plate, a heat collection return A heat collection circuit formed by sequentially connecting piping and the compressor in a ring, and a water circulation circuit formed by sequentially connecting a hot water storage tank, a water circulation pump, the refrigerant to water pressure exchanger, a constant temperature flow valve, and the hot water storage tank in a ring. The hot water tank is equipped with a plurality of boiling length misters attached to the hot water storage tank.

Effects of the present invention With the above-described configuration, by selecting a plurality of boiling thermistors attached to the hot water storage tank, only the necessary amount of hot water can be heated and heated, and the hot water at a constant temperature is delivered to the upper part of the hot water storage tank by the action of the constant temperature flow valve. It can store more hot water.

EXAMPLE An example of the present invention will be described below with reference to FIG. In FIG. 1 of this embodiment, the same parts as those in FIG. 2 of the conventional example are given the same numbers to simplify the explanation.

In Fig. 1, 1 is a compressor, 2 is a refrigerant-to-water exchanger, which is equipped with a refrigerant side passage 2a and a water side passage 2b, and maintains the refrigerant side passage 2a and the water side passage 2b in a heat transfer manner. . 3 is a dryer, 4 is a cell 7 seal canopy ring A, 5 is a heat collection outgoing pipe, 6 is a one-shot cuff ring A, 7 is an expansion valve, and 8 is a heat collection plate, which is composed of a fin tube and has a corrosion-resistant coating. being done. 9 is a one-shot coupling B, 10 is a heat collection/return pipe, 11 is a cell 7 seal covering B1, 12 is an accumulation rake, and these are the compressor 1, the refrigerant side passage 2a of the refrigerant-to-water exchanger 2, the dryer 3, Self-seal coupling A4, heat collection outgoing pipe 5
, one-shot coupling 86, expansion valve 7, heat collecting plate 8
, one-shot coupling B9, heat collection/return pipe 10, and self-seal coupling 1 are connected in sequence to form a heat collection circuit.
Haru.

13 is a hot water storage tank, 14 is a water circulation pump, and 16 is a constant temperature flow valve;
4. A cold water heat exchanger 2b and a constant temperature flow valve 16 are connected in this order to form a water circulation circuit, and the hot water storage tank 1
A hot water supply outlet 17 from 3 is provided at the lower end of the hot water storage tank 13, and a hot water return port 18 is provided at the upper end of the hot water storage tank. A plurality of boiling thermistors 15 are provided in the hot water storage tank 13.

The operation of the above configuration will be explained. The heat collecting operation is performed by driving the compressor 1 and the water circulation pump 14. That is, the refrigerant gas compressed to high temperature and high pressure by the compressor 1 is sent to the refrigerant side passage 2a of the refrigerant-to-water heat exchanger 2, where it is connected to the water side passage 2bi and the water circulation pump 1 in a heat transfer relationship.
4, heat is radiated to the flowing hot water in the hot water storage tank 13, and the hot water is condensed and liquefied. The condensed refrigerant passes through the dryer 3, the self-seal coupling A4, the heat collection outgoing pipe 5, and the pulling force 7, and reaches the expansion valve 7. As it passes through the expansion valve 7, it is depressurized and becomes low temperature and pressure. , flows into the heat collecting plate 8. The refrigerant flowing into the heat collecting plate 8 absorbs heat from the sun and the atmosphere through the heat collecting plate 8 and sequentially evaporates into gas. Next, the refrigerant evaporated on the heat collecting plate 8 is transferred to the one-shot cuff ring B9, the heat collecting return pipe 10. It passes through the self-seal coupling B11 and the accumulator 12 and is sucked into the compressor 1 again. The entire similar cycle is spelled out below. On the other hand, the hot water in the hot water storage tank 13 is
Water circulation pump 14 from hot water outlet 17 provided at the bottom of 3
is sent to the water side passage 2b of the refrigerant-to-water heat exchanger 2 via
Although it is heated by receiving heat from the refrigerant, the constant temperature flow valve 16 controls the amount of water to maintain a constant temperature, and the water is returned to the upper part of the hot water storage tank 13 through the hot water return port 18. Here, by selecting a plurality of boiling thermistors 15, the heat collecting operation is stopped when the amount of hot water to be heated reaches one level.

Effects of the Invention As described above, according to the present invention, there is provided a water circulation circuit in which a hot water storage tank, a water circulation pump, a refrigerant-to-water heat exchanger, a constant temperature flow valve, and a hot water storage tank are connected in this order in an annular manner. Since multiple boiling thermistors are installed in the hot water storage tank, hot water at a constant temperature can be stored sequentially from the top of the hot water storage tank, and the required amount of hot water can be obtained by selecting all of the multiple boiling thermistors. As a result, heat radiation loss due to residual hot water etc. can be reduced, and heat collection efficiency can be improved.

Furthermore, since hot water at a constant temperature is stored from the upper part of the hot water storage tank, hot water at a high temperature can be obtained in a relatively short time after the start of heat collection operation, and as a result, usability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram of a solar heat collector showing an embodiment of the present invention, and FIG. 2 is a system configuration diagram of a conventional solar heat collector. 1...Compressor, 2.River...Refrigerant-to-water heat exchanger,
5... Heat collection outgoing pipe, 7... Expansion valve, 8
・River... Heat collection plate, 10... Heat collection return pipe, 13.
...Hot water storage tank, 14...Water circulation pump, 15...Boiling thermistor, 16...
・・Name of the agent: Patent attorney Nakao Higashio Haga 1 person + A
S l Diagram Z

Claims (1)

[Claims] A compressor, a refrigerant-to-water heat exchanger, a heat collection outward pipe, an expansion valve, a heat collection plate, a heat collection return pipe, a heat collection circuit formed by sequentially connecting the compressor in a ring, a hot water storage tank, a water circulation pump, the above-mentioned A solar heat collection device comprising a refrigerant-to-water heat exchanger, a constant temperature flow valve, and a water circulation circuit formed by sequentially connecting the hot water storage tanks in a ring shape, and in which a plurality of boiling thermistors are attached to the hot water storage tanks.