JP2846548B2 - Thermal storage air conditioning system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative air conditioning system capable of shifting daytime power consumption to nighttime by a cooling / heating and heat storage function.

[0002]

2. Description of the Related Art As a conventional regenerative air conditioning system, for example, there is one disclosed in Japanese Utility Model Publication No. 3-54375 as shown in FIG. FIG. 16 is a configuration diagram showing a conventional heat storage air conditioner described in Japanese Utility Model Publication No. 3-54375. In FIG. 16, 1 is a compressor, 2 is a four-way valve for switching between cooling and heating, 3 is an indoor heat exchanger, 4 is an expansion mechanism as a decompression means, 5 is a three-way valve, 6 is a heat storage tank, 7 Is an outdoor heat exchanger, 8 is a control valve, 9 is a hot gas bypass circuit, 10 is a heat-up circuit, and 11 is a bypass circuit.

Next, the operation will be described. In the above configuration, the refrigerant gas that has exited the compressor 1 during the heating operation is radiated and condensed in the indoor heat exchanger 3 via the four-way valve 2. Thereafter, the pressure is reduced by the expansion mechanism 4, the refrigerant usually flows to the bypass circuit 11 by the three-way valve 5, is absorbed and evaporated by the outdoor heat exchanger 7, and returns to the compressor 1 via the four-way valve 2. At this time, a part of the refrigerant gas that has exited the compressor 1 enters the heat storage tank 6 via the hot gas bypass circuit 9, where heat is exchanged and heat is stored. The liquid refrigerant radiated and condensed in the heat storage tank 6 is appropriately depressurized by the control valve 8 and then returned to the compressor 1 together with the refrigerant from the outdoor heat exchanger 7, and compressed by returning the unevaporated liquid refrigerant to the compressor 1. The machine 1 is cooled. Next, if the heat absorption capacity of the outdoor heat exchanger 7 decreases due to a decrease in outside air temperature and the heating capacity decreases, 3
The refrigerant is caused to flow to the heat-up circuit 10 by operating the direction valve 5.
Then, the heat stored in the heat storage tank 6 is absorbed, the temperature of the refrigerant at the entrance of the outdoor heat exchanger 7 is increased, and the frost attached to the surface of the outdoor heat exchanger 7 is melted. At this time, the control valve 8 of the hot gas bypass circuit 9 is adjusted to increase the refrigerant circulation amount,
By flowing to the suction line, the suction refrigerant pressure of the compressor 1 is increased. When the heat absorbing ability of the outdoor heat exchanger 7 is restored, the switching of the three-way valve 5 to the bypass circuit 11 is adjusted again, and the heat storage in the heat storage tank 6 is restarted. During the cooling operation, the four-way valve 2 is switched, the heat is condensed from the compressor 1 through the four-way valve 2 in the outdoor heat exchanger 7, the pressure is reduced by the expansion mechanism 4 through the bypass circuit 11 and the three-way valve 5, The cooling operation is performed by endothermic evaporation in the heat exchanger 3.

[0004]

By the way, recently, the power situation in Japan has deteriorated, and the air-conditioning capacity necessary in the daytime in order to cope with the problem of the power supply in the daytime in summer has been stored during the nighttime. A heat storage air-conditioning system appears as an air-conditioning capacity in this case.
Operation using a heat storage tank is required even during cooling in summer.
Since the conventional regenerative air conditioning system is configured as described above, the high-temperature gas discharged from the compressor 1 flows into the regenerator 6 so that the amount of heat can be effectively stored during heating. However, there was a problem that it could not be used effectively at the time of cooling.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a heat storage type air conditioner which stores heat not only in winter but also in summer so that daytime use of electric power can be shifted to nighttime. The aim is to get the system.

[0006]

According to a first aspect of the present invention, there is provided a regenerative air conditioning system in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected. In the air conditioning system, a first solenoid valve provided between the decompression means and the outdoor heat exchanger, and one end of the first decompression means and the first decompression means through a decompression means different from the decompression means.
A heat storage tank connected between the heat storage tank and the second solenoid valve, the other end being connected to the discharge side of the compressor via a second solenoid valve; A third electromagnetic valve provided between the indoor heat exchanger and the four-way valve, and a fourth electromagnetic valve provided between the indoor heat exchanger and the four-way valve. The valve and the decompression means are opened, the third solenoid valve and another decompression means are closed, and the first solenoid valve, the third solenoid valve and another decompression means are opened at night in summer, and the decompression means and the second electromagnetic The valve is closed, the second solenoid valve, the fourth solenoid valve, the decompression means and another decompression means are opened during the heat storage cooling operation, the first and third solenoid valves are closed, and the heating operation is performed. Opening the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means, closing the first solenoid valve and another pressure reducing means,
At night in winter, the first solenoid valve, the second solenoid valve and another decompression means are opened, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed. , The fourth solenoid valve, the decompression means and another decompression means are opened, and the first and second solenoid valves are closed.

According to a second aspect of the present invention, there is provided an air conditioning system in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected. A first solenoid valve provided between the decompression means and the outdoor heat exchanger, and one end connected between the decompression means and the first solenoid valve via another decompression means different from the decompression means; A heat storage tank having the other end connected to the discharge side of the compressor via a second solenoid valve, and a third heat storage tank provided between the heat storage tank and the second solenoid valve and between the four-way valve. , A fourth solenoid valve provided between the indoor heat exchanger and the four-way valve, and an evaporating pressure regulating valve connected in parallel to the fourth solenoid valve. The first solenoid valve, the fourth solenoid valve and the pressure reducing means are opened, the third solenoid valve and another pressure reducing means are closed, and the Opens the first solenoid valve, the third solenoid valve and another decompression means, closes the decompression means and the second solenoid valve, and operates the second solenoid valve, the fourth solenoid valve, and the decompression means during cooling operation using heat storage. And opening another decompression means, closing the first solenoid valve and the third solenoid valve, and opening the first solenoid valve, the third solenoid valve, the decompression means and another decompression means during cooling / heat storage operation, The second solenoid valve and the fourth solenoid valve are closed. During the heating operation, the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means are opened, and the first solenoid valve and another pressure reducing means are closed. During the winter night, the first solenoid valve, the second solenoid valve and another decompression means are opened, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed. An electromagnetic valve, a fourth electromagnetic valve, a pressure reducing means and another pressure reducing means are opened, and the first electromagnetic valve and the second electromagnetic valve are closed.

[0008]

According to the first aspect of the present invention, the first, third, and fourth solenoid valves are opened, the second solenoid valve is closed, and a plurality of indoor expansion mechanisms are closed at night. To store heat in the heat storage tank, open the second and fourth solenoid valves in the daytime,
By closing the second solenoid valve, the power consumption in the daytime can be shifted to the nighttime.

According to a second aspect of the present invention, the first, third, and fourth solenoid valves are opened, the second solenoid valve is closed, and a plurality of indoor expansion mechanisms are closed at night. By storing heat in the heat storage tank and opening the second and fourth solenoid valves in the daytime and closing the first and second solenoid valves in the daytime, daytime power consumption can be shifted to nighttime. . First
By opening the third solenoid valve and closing the second and fourth solenoid valves, the operation of storing heat (cool air) in the heat storage tank and the normal cooling operation can be performed simultaneously.

[0010]

Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIG. 1 is a compressor, 2 is a four-way valve, 3a, 3b, 3c are a plurality of indoor heat exchangers, 4a, 4b, 4c are a plurality of expansion mechanisms, 6 is a heat storage tank, 7 is an outdoor heat exchanger, 12 is A first solenoid valve, 13 is a second solenoid valve, 14 is a third solenoid valve, 15
Denotes a fourth solenoid valve, and 16 denotes an evaporation pressure adjusting valve. Normal cooling will be described with reference to FIG. The high-temperature refrigerant gas discharged from the compressor 1 is radiated and condensed in the outdoor heat exchanger 7 via the four-way valve 2 and is opened.
The pressure is reduced by a plurality of expansion mechanisms 4a, 4b, 4c through the electromagnetic valve 12 of FIG. Then, a plurality of indoor heat exchangers 3a, 3b,
The refrigerant gas endothermic and evaporated in 3c passes through the open fourth solenoid valve 15 and returns to the compressor 1 via the four-way valve 2. The expansion mechanism 4d connected to the second solenoid valve 13 and the heat storage tank 6 is fully closed, and no refrigerant gas flows into the heat storage tank 6.

During the summer night, high-temperature refrigerant gas discharged from the compressor 1 is radiated and condensed in the outdoor heat exchanger 7 via the four-way valve 2 as shown in FIG. First
Expansion mechanism 4d connected to heat storage tank 6 via solenoid valve 12
The third solenoid valve 14 is opened by storing heat (cold air) in the heat storage tank 6 and absorbing heat (cold air) in the heat storage tank 6.
And returns to the compressor 1. The plurality of expansion mechanisms 4a, 4b, 4c connected to the second solenoid valve 13 and the plurality of indoor heat exchangers 3a, 3b, 3c are fully closed, and no refrigerant flows.

During the daytime in summer, high-temperature refrigerant gas discharged from the compressor 1 flows into the heat storage tank 6 through the opened second solenoid valve 13 as shown in FIG. And the expansion mechanism 4 connected to the heat storage tank 6 which is fully open.
After d, the pressure is reduced by the plurality of expansion mechanisms 3a, 3b, 3c. Thereafter, the refrigerant gas absorbed and evaporated by the plurality of indoor heat exchangers 3a, 3b, 3c returns to the compressor 1 via the open fourth solenoid valve, the four-way valve 2, and the like. The first solenoid valve 12 and the third solenoid valve 14 are fully closed. At this time, since the heat (cold air) of the heat storage tank 6 is used as the condensation side, the discharge pressure of the compressor 1 is reduced, and the operation state becomes very efficient. For this reason, it is possible to output the same cooling capacity as normal with power consumption of about の of the normal cooling operation.

Next, the operation during normal heating will be described with reference to FIG. The high-temperature refrigerant gas discharged from the compressor 1 passes through the fourth solenoid valve 15 that is opened via the four-way valve 2 and is radiated and condensed by the plurality of indoor heat exchangers 3a, 3b, 3c. After the pressure is reduced by the plurality of expansion mechanisms 4a, 4b, and 4c, the refrigerant gas that has been absorbed and evaporated in the outdoor heat exchanger 7 through the first electromagnetic valve 12 that is open is compressed through the four-way valve 2. Return to machine 1. The expansion mechanism 4d connected to the second solenoid valve 13 and the heat storage tank 6 is fully closed, and no refrigerant gas flows into the heat storage tank 6.

During the nighttime in winter, the high-temperature refrigerant gas discharged from the compressor 1 is open as shown in FIG.
The heat is condensed in the heat storage tank 6 through the electromagnetic valve 13, heat is stored in the heat storage tank, the pressure is reduced by the expansion mechanism 4 d connected to the heat storage tank 6, and the first electromagnetic valve 12 that is open , Endothermic and evaporated in the outdoor heat exchanger 7 and returned to the compressor 1 via the four-way valve 2. The third solenoid valve 14, the fourth solenoid valve 15, and the plurality of expansion mechanisms 4a, 4b, 4c are fully closed, and no refrigerant flows.

During the daytime in winter, as shown in FIG. 8, the high-temperature refrigerant gas discharged from the compressor 1 passes through the four-way valve, passes through the fourth solenoid valve 14 which is opened, and passes through a plurality of chambers. After being radiated and condensed in the inner heat exchangers 3a, 3b, 3c, decompressed by the plurality of expansion mechanisms 4a, 4b, 4c, the heat storage tank 6 is connected to the heat storage tank 6 which is fully open and connected to the expansion mechanism 4d.
The third solenoid valve 14 which is sucked and evaporated, and is opened
And returns to the compressor 1. The first solenoid valve 12 and the second solenoid valve 13 are fully closed. At this time, since the heat of the heat storage tank 6 is used as the evaporator side, the suction pressure of the compressor 1 is increased, and the operation state becomes very efficient. Therefore, it is possible to obtain the same heating capacity as usual with less power consumption than during the normal heating operation.

Embodiment 2 FIG. Embodiment 2 of the present invention will be described with reference to FIG. 1 is a compressor, 2 is a four-way valve, 3a, 3b, 3
c is a plurality of indoor heat exchangers, 4a, 4b, 4c are a plurality of expansion mechanisms, 6 is a heat storage tank, 7 is an outdoor heat exchanger, 12 is a first solenoid valve, 13 is a second solenoid valve, Reference numeral 14 denotes a third solenoid valve, 15 denotes a fourth solenoid valve, and 16 denotes an evaporation pressure adjusting valve.

The normal cooling will be described with reference to FIG. The high-temperature refrigerant gas discharged from the compressor 1 is supplied to the four-way valve 2
The heat is condensed in the outdoor heat exchanger 7 through the first electromagnetic valve 12, and the plurality of expansion mechanisms 4a, 4
The pressure is reduced at b and 4c. Then, a plurality of indoor heat exchangers 3
The refrigerant gas absorbed and evaporated at a, 3b, and 3c returns to the compressor 1 via the four-way valve 2 via the open fourth solenoid valve 15. The expansion mechanism 4d connected to the second solenoid valve 13 and the heat storage tank 6 is fully closed, and no refrigerant gas flows into the heat storage tank 6.

During the summer night, high-temperature refrigerant gas discharged from the compressor 1 is radiated and condensed in the outdoor heat exchanger 7 via the four-way valve 2 as shown in FIG. Expansion mechanism 4 connected to heat storage tank 6 via first solenoid valve 12
d, the heat is absorbed and evaporated in the heat storage tank 6, heat (cold air) is stored in the heat storage tank 6, and the third solenoid valve 14 which is open is opened.
And returns to the compressor 1. The plurality of expansion mechanisms 4a, 4b, 4c connected to the second solenoid valve 13 and the plurality of indoor heat exchangers 3a, 3b, 3c are fully closed, and no refrigerant flows.

During the daytime in summer, the high-temperature refrigerant gas discharged from the compressor 1 flows into the heat storage tank 6 through the opened second solenoid valve 13 as shown in FIG. Then, the pressure is reduced by a plurality of expansion mechanisms 4a, 4b, 4c via an expansion mechanism 4d connected to the heat storage tank 6 which is fully open. Thereafter, the refrigerant gas absorbed and evaporated by the plurality of indoor heat exchangers 3a, 3b, 3c returns to the compressor 1 via the open fourth solenoid valve, the four-way valve 2, and the like. The first solenoid valve 12 and the third solenoid valve 14 are fully closed. At this time, since the heat (cold air) of the heat storage tank 6 is used as the condensation side, the discharge pressure of the compressor 1 is reduced, and the operation state becomes very efficient. For this reason, it is possible to output the same cooling capacity as normal with power consumption of about の of the normal cooling operation.

Further, heat (cold air) is stored in the heat storage tank 6 during the summer night.
FIG. 12 illustrates an operation of simultaneously performing the heat storage operation and the normal cooling operation. The high-temperature refrigerant gas discharged from the compressor 1 is radiated and condensed in the outdoor heat exchanger 7 via the four-way valve 2 and connected to the heat storage tank 6 via the first electromagnetic valve 12 which is open. The pressure is reduced by the expansion mechanism 4d, the heat is absorbed and evaporated in the heat storage tank 6, and heat (cool air) is stored in the heat storage tank 6,
The flow returns to the compressor 1 via the third solenoid valve 14 which is open. On the other hand, the refrigerant gas that has passed through the opened first solenoid valve 12 is supplied to the plurality of expansion mechanisms 4a, 4a on the indoor heat exchanger side.
b, 4c, a plurality of indoor heat exchangers 3 are decompressed.
The heat is absorbed and evaporated at a, 3b, and 3c, and returns to the compressor 1 through the evaporation pressure adjusting valve 16. In this case, two different evaporation temperatures are generated in the heat storage tank 6 and the plurality of indoor heat exchangers 3a, 3b, 3c by the evaporation pressure adjusting valve 16, so that heat (cold air) is stored in the heat storage tank 6 at night in summer. It becomes possible to simultaneously perform the stored heat storage operation and the normal cooling operation. The second solenoid valve 13 and the fourth solenoid valve 15 are fully closed.

Next, the operation during normal heating will be described with reference to FIG. The high-temperature refrigerant gas discharged from the compressor 1 passes through the fourth solenoid valve 15 that is opened via the four-way valve 2 and is radiated and condensed by the plurality of indoor heat exchangers 3a, 3b, 3c. After the pressure is reduced by the plurality of expansion mechanisms 4a, 4b, and 4c, the refrigerant gas that has been absorbed and evaporated in the outdoor heat exchanger 7 through the first electromagnetic valve 12 that is open is compressed through the four-way valve 2. Return to machine 1. The expansion mechanism 4d connected to the second solenoid valve 13 and the heat storage tank 6 is fully closed, and no refrigerant gas flows into the heat storage tank 6.

In the winter night, as shown in FIG. 14, the high-temperature refrigerant gas discharged from the compressor 1 is radiated and condensed in the heat storage tank 6 through the second solenoid valve 13 which is open, and the heat storage tank After the heat is stored and reduced in pressure by an expansion mechanism 4d connected to the heat storage tank 6, the heat is absorbed and evaporated in the outdoor heat exchanger 7 through the first electromagnetic valve 12 which is open, and the four-way valve 2 and return to the compressor 1. The third solenoid valve 14, the fourth solenoid valve 15, and the plurality of expansion mechanisms 4a, 4b, 4c are fully closed, and no refrigerant flows.

During the daytime in winter, as shown in FIG. 15, the high-temperature refrigerant gas discharged from the compressor 1 passes through the four-way valve, passes through the fourth solenoid valve 14 that is opened, After being radiated and condensed in the indoor heat exchangers 3a, 3b, 3c and decompressed by the plurality of expansion mechanisms 4a, 4b, 4c, the heat storage tank 6 passes through the expansion mechanism 4d connected to the heat storage tank 6 that is fully open. To the compressor 1 via the third solenoid valve 14 which is open. The first solenoid valve 12 and the second solenoid valve 13 are fully closed. At this time, since the heat of the heat storage tank 6 is used as the evaporator side, the suction pressure of the compressor 1 is increased, and the operation state becomes very efficient. Therefore, it is possible to obtain the same heating capacity as usual with less power consumption than during the normal heating operation.

[0024]

According to the first aspect of the present invention, there is provided a regenerative air conditioning system.
A compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means,
In an air conditioning system in which an indoor heat exchanger is sequentially connected, a first solenoid valve provided between the decompression means and the outdoor heat exchanger, and one end of which is decompressed separately from the decompression means A heat storage tank connected between the pressure reducing means and the first solenoid valve through a second means, and the other end connected to the discharge side of the compressor via a second solenoid valve; A third solenoid valve provided between the solenoid valves and the four-way valve, and a fourth solenoid valve provided between the indoor heat exchanger and the four-way valve.
An electromagnetic valve, during cooling operation, the first electromagnetic valve, the fourth electromagnetic valve and the pressure reducing means are opened, the third electromagnetic valve and another pressure reducing means are closed, and the first electromagnetic valve at night in summer, The third solenoid valve and another decompression means are opened, the decompression means and the second solenoid valve are closed, and the second solenoid valve, the fourth solenoid valve, the decompression means and another decompression means are opened during the cooling operation using heat storage. Closing the first solenoid valve and the third solenoid valve, and opening the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means during the heating operation, and opening the first solenoid valve and another pressure reducing means. Is closed, the first solenoid valve, the second solenoid valve and another decompression means are opened at night in winter, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed. The third solenoid valve, the fourth solenoid valve, the decompression means and another decompression means are opened, and the first solenoid valve and the second solenoid valve are closed. In both cooling and heating, heat is stored in the heat storage tank using low electricity rates during the night, and cooling and heating are performed using the heat during the day, enabling efficient and low power consumption operation. .

According to a second aspect of the present invention, there is provided an air conditioning system in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected. A first solenoid valve provided between the decompression means and the outdoor heat exchanger, and one end connected between the decompression means and the first solenoid valve via another decompression means different from the decompression means; A heat storage tank having the other end connected to the discharge side of the compressor via a second solenoid valve, and a third heat storage tank provided between the heat storage tank and the second solenoid valve and between the four-way valve. , A fourth solenoid valve provided between the indoor heat exchanger and the four-way valve, and an evaporating pressure regulating valve connected in parallel to the fourth solenoid valve. The first solenoid valve, the fourth solenoid valve and the pressure reducing means are opened, the third solenoid valve and another pressure reducing means are closed, and the Opens the first solenoid valve, the third solenoid valve and another decompression means, closes the decompression means and the second solenoid valve, and operates the second solenoid valve, the fourth solenoid valve, and the decompression means during cooling operation using heat storage. And opening another decompression means, closing the first solenoid valve and the third solenoid valve, and opening the first solenoid valve, the third solenoid valve, the decompression means and another decompression means during cooling / heat storage operation, The second solenoid valve and the fourth solenoid valve are closed. During the heating operation, the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means are opened, and the first solenoid valve and another pressure reducing means are closed. During the winter night, the first solenoid valve, the second solenoid valve and another decompression means are opened, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed. Since the solenoid valve, the fourth solenoid valve, the decompression means and another decompression means are opened and the first and second solenoid valves are closed, the In addition to the effect of claim 1, it is possible to perform operation and normal cooling operation for storing heat (cold) in the thermal storage tank at the same time.

[Brief description of the drawings]

FIG. 1 is an overall system configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an overall system configuration diagram showing a second embodiment of the present invention.

FIG. 3 is a diagram (normal cooling operation) illustrating a flow of a refrigerant in the first embodiment of the present invention.

FIG. 4 is a diagram showing a flow of a refrigerant in the first embodiment of the present invention (heat storage operation at night in summer).

FIG. 5 is a diagram illustrating a flow of a refrigerant in the first embodiment of the present invention (a heat storage operation in the daytime in summer).

FIG. 6 is a diagram (normal heating operation) illustrating a flow of a refrigerant in the first embodiment of the present invention.

FIG. 7 is a diagram showing a flow of a refrigerant in the first embodiment of the present invention (heat storage operation during nighttime in winter).

FIG. 8 is a diagram illustrating a flow of a refrigerant in the first embodiment of the present invention (a heat storage utilization operation in daytime in winter).

FIG. 9 is a diagram (normal cooling operation) illustrating a flow of a refrigerant in Embodiment 2 of the present invention.

FIG. 10 is a diagram showing a flow of a refrigerant in a second embodiment of the present invention (heat storage operation at night in summer).

FIG. 11 is a diagram showing a flow of a refrigerant in a second embodiment of the present invention (a heat storage operation in the daytime in summer).

FIG. 12 is a diagram showing the flow of a refrigerant in the second embodiment of the present invention (simultaneous operation of heat storage and normal cooling in summer night).

FIG. 13 is a diagram (normal heating operation) illustrating a flow of a refrigerant in Embodiment 2 of the present invention.

FIG. 14 is a diagram illustrating a flow of a refrigerant in a second embodiment of the present invention (operation using heat storage at night in winter).

FIG. 15 is a diagram illustrating a flow of a refrigerant in a second embodiment of the present invention (operation using heat storage in winter daytime).

FIG. 16 is a configuration diagram of a conventional regenerative air conditioning system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Indoor heat exchanger 4 Expansion mechanism 6 Heat storage tank 7 Outdoor heat exchanger 12 1st electromagnetic valve 13 2nd electromagnetic valve 14 3rd electromagnetic valve 15 4th electromagnetic valve 16 Evaporation Pressure regulating valve

──────────────────────────────────────────────────続 き Continuing on the front page (73) Patent holder 000242644 Hokuriku Electric Power Co., Inc. 15-1, Ushijima-cho, Toyama-shi, Toyama (73) Patent holder 000156938 Kansai Electric Power Co., Inc. 3-3-1 Nakanoshima, Kita-ku, Osaka-shi, Osaka No. 22 (73) Patent holder 000211307 Chugoku Electric Power Co., Inc. 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima Prefecture (73) Patent holder 000180368 Shikoku Electric Power Co., Inc. Marunouchi 2-5, Takamatsu-shi, Kagawa Prefecture (73) Patent holder 000164438 Kyushu Electric Power Co., Inc. 2-82 Watanabe-dori, Chuo-ku, Fukuoka, Fukuoka Prefecture (72) Inventor Takeshi Kuramochi 3-181-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works (72) Inventor Yoshihiro Sumida 8-1-1, Tsukaguchi-Honmachi, Amagasaki-shi Mitsubishi Electric Corporation Central Research Laboratory (72) Inventor Seiji Inoue 2--14-40 Ofuna, Kamakura-shi Birthplace, Mitsubishi Electric Corporation Inside the System Research Laboratory (72) Inventor Tetsuji Okada 3-181-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works (72) Inventor Yuyama ▲ Hiroshi ▼ 3-1-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Inside Shizuoka Works (72) Inventor Tetsuji Shichido 3-181-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works (72) Inventor, etc. 3-181-1, Oka, Shizuoka-shi Mitsubishi Electric Shizuoka Inside the factory (72) Inventor Yoshiaki Tanimura 3-1-1, Oka, Shizuoka-shi Mitsubishi Electric Corporation Shizuoka Works (72) Inventor Bunya Tokaibayashi 3-7-1 Ichibancho, Aoba-ku, Sendai, Miyagi Tohoku Electric Power (72) Inventor Osamu Iwase 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Tokyo Electric Power Co., Inc. (72) Inventor Kuniyuki Ito 1 Higashi-shinmachi, Higashi-ku, Nagoya-shi, Aichi Chubu Electric Power Co., Inc. (72) Inventor Yoshiharu Takai 15-1 Ushijima-cho, Toyama City, Toyama Pref. 72) Inventor Toshiro Oki 3-2-2 Nakanoshima, Kita-ku, Osaka-shi, Osaka Inside Kansai Electric Power Co., Inc. (72) Inventor Kiyoshi Ikebe 4-33 Komachi, Naka-ku, Hiroshima-shi, Hiroshima Chugoku Electric Power Co., Inc. (72 Inventor Yoshihiro Mita 2-5 Marunouchi, Takamatsu City, Kagawa Prefecture Inside Shikoku Electric Power Co., Inc. (72) Inventor Fumifumi 2-82 Watanabe-dori, Chuo-ku, Fukuoka City, Fukuoka Prefecture Kyushu Electric Power Co., Inc. (56) References JP-A-63-87563 (JP, A) JP-A-2-78869 (JP, A) JP-A-2-29560 (JP, A) JP-A-4-371760 (JP, A) (58) Fields investigated (Int.Cl. ⁶ , DB name) F25B 13/00

Claims (2)

(57) [Claims] 1. An air conditioning system in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected, wherein the pressure reducing means and the outdoor heat exchange are connected. A first solenoid valve provided between the pressure reducing device and the first pressure reducing device;
A heat storage tank connected between the heat storage tank and the second solenoid valve, the other end being connected to the discharge side of the compressor via a second solenoid valve; A third electromagnetic valve provided between the indoor heat exchanger and the four-way valve, and a fourth electromagnetic valve provided between the indoor heat exchanger and the four-way valve. The valve and the decompression means are opened, the third solenoid valve and another decompression means are closed, and the first solenoid valve, the third solenoid valve and another decompression means are opened at night in summer, and the decompression means and the second electromagnetic The valve is closed, the second solenoid valve, the fourth solenoid valve, the decompression means and another decompression means are opened during the heat storage cooling operation, the first and third solenoid valves are closed, and the heating operation is performed. Opening the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means, closing the first solenoid valve and another pressure reducing means,
At night in winter, the first solenoid valve, the second solenoid valve and another decompression means are opened, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed. , A fourth electromagnetic valve, a pressure reducing means and another pressure reducing means are opened, and the first and second electromagnetic valves are closed. 2. An air conditioning system in which a compressor, a four-way valve, an outdoor heat exchanger, a pressure reducing means, and an indoor heat exchanger are sequentially connected, wherein the pressure reducing means and the outdoor heat exchange are connected. A first solenoid valve provided between the pressure reducing device and the first pressure reducing device;
A heat storage tank connected between the heat storage tank and the second solenoid valve, the other end being connected to the discharge side of the compressor via a second solenoid valve; A third solenoid valve provided therebetween, a fourth solenoid valve provided between the indoor heat exchanger and the four-way valve, and an evaporation pressure adjustment connected in parallel to the fourth solenoid valve. The first solenoid valve, the fourth solenoid valve and the pressure reducing means are opened during cooling operation, the third solenoid valve and another pressure reducing means are closed, and the first solenoid valve and the third solenoid valve are closed at night in summer. Opening the solenoid valve and another decompression means, closing the decompression means and the second solenoid valve, and opening the second solenoid valve, the fourth solenoid valve, the decompression means and another decompression means during the heat storage cooling operation, Closing the first solenoid valve and the third solenoid valve, and opening the first solenoid valve, the third solenoid valve, the pressure reducing means and another pressure reducing means during the cooling / heat storage operation, The second solenoid valve and the fourth solenoid valve are closed, and during the heating operation, the first solenoid valve, the third solenoid valve, the fourth solenoid valve and the pressure reducing means are opened, and the first solenoid valve and another pressure reducing means are opened. The first solenoid valve, the second solenoid valve and another decompression means are opened at night in winter, and the third solenoid valve, the fourth solenoid valve and the decompression means are closed during the night in winter. A regenerative air conditioning system, characterized in that a third solenoid valve, a fourth solenoid valve, a pressure reducing means and another pressure reducing means are opened, and the first solenoid valve and the second solenoid valve are closed.