JPS59229153A - Air cooling and warm water feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a cooling and hot water supply device.

Conventionally, in order to supply hot water and space with a heat pump unit that operates using low-temperature air as a heat source using one compressor, a large compressor, for example, 200V 3-phase, 1.5kW, is required.
, a reciprocating type is required, and so-called heat pump units operate with low efficiency or coefficient of performance.

Therefore, in the present invention, 1. In order to use a high-efficiency compressor that can be used in ordinary homes, the heat exchanger on the evaporator side of the heat pump unit is placed in solar-heated water or antifreeze, allowing hot water and space heating to be performed at the same time. This is what I did. Specifically, in the winter, solar heat is actively used to supply hot water for hot water supply and heating, and in the summer, it is used for cooling and hot water supply.

Another object of the present invention is to switch the circuit of the heat pump unit to operate only for cooling during the summer when hot water reaches a predetermined temperature.

Embodiments of the present invention will be described below with reference to the drawings.

First, the heat pump unit 28 includes a compressor 1, a first heat exchanger 6 and a second heat exchanger 7 as heat input means,
Additionally, a sixth heat exchanger filter is provided as a heat output means. Of course, the heat pump unit 28 is attached with an expansion valve 5, a liquid reservoir 4, and a four-way switching valve 2.

Further, a fan motor 8 is arranged to face the first heat exchanger 6, an electromagnetic on-off valve 11 is connected to the first heat exchanger B, and an electromagnetic on-off valve 1D is connected to the second heat exchanger 7. An electromagnetic on-off valve 9 is connected to the sixth heat exchanger B. Furthermore, the electromagnetic on-off valve 1 is connected in parallel with the liquid reservoir 4, the expansion valve 5, and the electromagnetic on-off valve 11.
A pipe 64 including 2 is connected.

The sixth heat exchanger 5 is built in the hot water storage tank 29, and the hot water storage tank 29 further includes a heat exchanger 16 built in for floor heating. In addition, in the hot water storage tank 29, 17 is an air vent, and a filter 2
is the water supply valve.

Now, a heat load 158 is attached to the hot water storage tank 29,
In the embodiment, the heat load is specifically a hot water supply and heating load. In the drawing, 18 is a hot water faucet, and 15 is a floor heating panel. Of course, the floor heating panel 15 is connected to the heat exchanger 1 for floor heating, and heat is supplied from the heat exchanger 1 to the panel 15 by the circulation pump 14. Note that an expansion tank 16 is provided in the floor heating piping for safety.

The second heat exchanger 7 is built in a cold/hot water tank 60 utilizing solar heat, and the cold/hot water tank filter O further has a built-in heat exchanger 20 for heat supply. In addition, the heat collector plate 31 of the heat collector 19 is connected to the circulation pump 21 in the heat exchanger 20 in the cold/hot water tank 60.
connected via. By the way, the heat collector 19 is installed at a relatively high slope so that it can actively absorb solar heat during the winter and intermediate seasons. Note that 22 is an expansion tank of the heat collector 19, and 26 and 33 are air vents and water or antifreeze supply valves for the hot and cold water tank 60, respectively.

Now, a fan coil unit 265 as a cooling load is attached to the cold/hot water tank filter 0, and the cooling heat exchanger 25 of this unit 265 has an inlet and an outlet connected to the cold/hot water tank 50 with a circulation pump 24 attached. It is opened.

Note that 26 is the fan motor of the fan coil unit 2 and 5, and 27 is the faucet of the cold and hot water tank 0.

In the embodiment configured as described above, winter operation is performed as follows.

(1) Winter operation (a) When performing either hot water supply or floor heating, it may be done as in (b), but the electromagnetic on-off valve 9,
Hot water supply or floor heating can also be performed by opening 11 and closing electromagnetic on-off valves 10 and 12. In this way, the refrigerant gas of the heat pump unit 28 is discharged from the compressor 1, passes through the solid line of the four-way switching valve 2, passes through the electromagnetic on-off valve 9, and enters the sixth heat exchanger B of the hot water storage tank 29. The water is condensed, and at this time the water in the hot water storage tank 29 is heated. The condensed refrigerant liquid then enters the liquid reservoir 4. Liquid puddle! After passing through the expansion valve 5, the refrigerant liquid coming out of the refrigerant 74 passes through the electromagnetic on-off valve 11, which is in an open state, and enters the first heat exchanger 6. At this point, the first heat exchanger 6 ceases to function as an evaporator, and the refrigerant evaporated by air heat is sucked into the compressor 1 through the four-way selector valve 2 again.

The circuit of this heat pump unit 28 is the same circuit as that of an air source heat pump water heater, and the heat pump unit 28 operates when the hot water temperature in the hot water tank 29 is below the set value, and stops when the set value is exceeded.

By the way, when supplying hot water, open the faucet 1B, and when performing floor heating, run the circulation pump 1-4 between the floor heating panel 15 and the floor heating heat exchanger 16 in the hot water storage tank 29. This system is used to circulate antifreeze and provide floor heating.

(bl) Next, when performing both hot water supply and floor heating, the electromagnetic on-off valves 9 and 10 are opened, and the electromagnetic on-off valves 11 and 12 are closed.

In this way, the refrigerant discharged from the compressor 1 is transferred to the four-way switching valve 2, the electromagnetic on-off valve 9, the sixth heat exchanger 6, and the liquid reservoir 4.
After passing through the expansion valve 5 and the electromagnetic on-off valve 10, the refrigerant gas is evaporated in the second heat exchanger 7 in the cold/hot water tank 60, and the evaporated refrigerant gas is sucked into the compressor 1. During the day, the water or antifreeze in the cold/hot water tank filter O that communicates with the heat collecting plate filter 1 in the heat collector 19 is heated by the circulation pump 21 in the heat exchanger 20 in the cold/hot water tank 60. Since the air is exchanged and circulated to the heat collecting plate 61, it is heated by solar heat. The set temperature of the water or antifreeze in the hot/cold water tank 60 is approximately 40 to 50°C.
If the temperature is higher than that, the circulation pump 21 is stopped, and if the temperature is lower than that, and the temperature of the heat collecting plate 61 is 5 degrees or more higher than the temperature of the water or antifreeze in the cold/hot water tank 30, the circulation pump 21 is stopped. to circulate water or antifreeze.

By the way, if the temperature of the water reed or antifreeze in the cold/hot water tank 0 is high, the evaporation temperature of the refrigerant evaporated in the heat exchanger 20 in the cold/hot water tank 30 will be higher than when evaporating with an air heat source. Hot water supply capacity and growth coefficients C, O, and P will improve.

As a result, we have created a compact and highly efficient compressor that can be used in general households (e.g. 1oov, single phase 750~3 Q Q w/h).
(rotary type) has the effect of providing hot water supply and floor heating.

(2) Summer operation (a) When performing hot water supply and cooling, the refrigerant circuit of the heat pump unit 28 is the same as in winter and intermediate period hot water supply and floor heating operation (1) (b). However, in principle, the antifreeze warmed by the heat collecting plate filter 1 in the heat collector 19 where 4I t≠4 is not circulated by the circulation pump 21. Then, the temperature of the water or antifreeze in the hot/cold water tank 60 decreases. Then, the water level or antifreeze that has decreased in temperature is pumped into the circulation pump 24.
As a result, the heat is absorbed by the cooling heat exchanger 25 installed indoors and returned to the cold/hot water tank 30. Therefore, by operating the fan motor 2 near the cooling heat exchanger 250, the room can be cooled.

The uncircumcised fan coil UNINO 1-235 can cool the room and at the same time supply hot water to raise the temperature of the water in the hot water tank 29.

(b) When performing only cooling, that is, when the water temperature in the hot water storage tank 29 exceeds the set value, switch the four-way selector valve 2, close the solenoid on-off valve 9°11 at the same time, and close the solenoid on-off valve 10. .12 is opened. Then, the refrigerant gas discharged from the compressor 1 enters the first heat exchanger B, where it is condensed and becomes liquid refrigerant. Then, the liquid refrigerant discharged from the first heat exchanger 6 passes through the electromagnetic shut-off valve 12 and enters the liquid reservoir 4. From the liquid reservoir 4, it passes through the expansion valve 5 and the electromagnetic shut-off valve 10, and enters the cold/hot water tank 60. It enters the second heat exchanger 7, evaporates, and is sucked into the compressor 1.

As a result, the water container or antifreeze in the hot/cold water tank 60 is cooled by the second heat exchanger 60.

By the way, during cooling operation, the temperature in the cold/hot water tank 60 reaches the set value (
For example, when the temperature drops to even lower than 10°C, the compressor 1 is stopped or the circulation pump 21 is operated to return the water temperature in the cold/hot water tank 60 to the set value.

(C) When only hot water supply is performed, the circuit of the heat pump unit 28 is set to the same circuit as the hot water supply and cooling operation (2) (a), but if the temperature of the hot and cold water tank 0 falls below the set value. Hot water supply only in winter (1) (a-)
Use the same refrigerant circuit.

(3) Operation in the intermediate seasons (spring and autumn) During the intermediate seasons of spring and autumn, when neither floor heating nor air conditioning is required, the circuit of the heat pump unit 28 is the same as in the case of winter hot water supply and floor heating operation (1) (b). Hot water is supplied by raising the temperature of the water reed or antifreeze in the hot/cold water tank 60 by using solar heat.

As a result, the heat pump unit will increase its hot water supply capacity and coefficient of performance during the interim period.

As described above, according to the present invention, by actively utilizing solar heat in the winter and intermediate seasons, it is possible to supply hot water and hot water for heating or hot water supply with a small output compressor, and in the summer, it is possible to supply hot water for heating and hot water supply. It can supply hot water.

Another advantage is that by switching the circuit of the heat pump unit, only cooling operation can be performed.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention. 1... Compressor 2... Four-way switching valve 3... Third heat exchanger 4... Liquid reservoir 5... Expansion valve 6... First heat exchanger 7... Second heat exchanger
8...Fan motor 9...Solenoid on-off valve 10...
- Solenoid on-off valve 11... Solenoid on-off valve 12... Solenoid on-off valve 1... Heat exchanger for floor heating 14... Circulation pump 15... Floor heating panel 16... Expansion tank 17.
... Air vent 18 ... Hot water faucet 19 ... Heat collector 20 ... Heat exchanger 21 ... Circulation pump 22
...Expansion tank 2...Fan motor 24...
Circulation pump Q5/cooling heat exchanger 26...air vent 27...faucet 28/heat pump unit 29
...Hot water tank 50...Cold/hot water tank filter 1...Heat collecting plate
62... Water supply valve 36... Supply valve 34... Piping
158... Heat load 235... Fan coil unit patent applicant Sanden Co., Ltd. Procedural amendment 1. Display of the case 1984 Patent Application No. 103015 2, Title of the invention 6, Person making the amendment Relationship to the case Patent applicant Telephone (0270) 24-1211 Name (184) Sanden Co., Ltd.

Claims (1)

[Claims] A heat pump unit 28 comprising a first heat exchanger 6 and a second heat exchanger 7 as heat input means and a sixth heat exchanger 3 as heat output means; The cold and hot water tank 6 includes a solar heat-using cold and hot water tank 30 that has a built-in container 7 and a hot water storage tank 29 that has the sixth heat exchanger 6 built-in.
A cooling and hot water supply device characterized in that a cooling load 265 is attached to the hot water storage tank 29, and a heat load 158 is attached to the hot water storage tank 29.