JPS5878057A - Heating and cooling device for air-conditioning - 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 heating and cooling device for heating and cooling.

It is well known that the heating capacity of conventional single-pump type air-conditioning equipment decreases as the outside temperature decreases during heating operation, and that this equipment alone cannot adequately heat the room in severe conditions. For this reason, various methods have been developed in which a heater is incorporated into the device and the heater is used to assist the performance, but there is a concern that this may cause problems. Other methods include heating a refrigerant using heat exchangers and burning kerosene as an auxiliary heat source for the outdoor heat exchanger, but these methods have the disadvantage of requiring a large amount of power consumption and kerosene fuel. Furthermore, even during cooling operation, the cooling capacity decreases as the outside temperature rises, and it is well known that this device alone cannot cool the room sufficiently.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a heating and cooling device for heating and cooling that can safely and economically improve heating and cooling capacity.

An embodiment of the present invention is shown in the drawings. That is, this heating and cooling device for heating and cooling utilizes the endothermic or exothermic action of metal hydrides, and uses high-pressure refrigerant and low-pressure refrigerant as the heat source and cooling source. In Figure 0, 1 is a normal refrigeration cycle, 2.
3 is a metal container in which a metal hydride 4 and a metal hydride 5 having different characteristics are sealed. The metal container 2.3 has fins 6.7 formed on its outer periphery and is arranged on the windward side of the outer heat exchanger 8, and has a heat exchange pipe 9.10 that uses high pressure refrigerant and an O heat exchanger that uses low pressure suction refrigerant inside. pipe 11.1
2 are buried in each. 1B is a valve interposed in the middle of the hydrogen pipe 13m that communicates with the metal container 2.3'. Reference numeral 14 denotes an outer side blower that sends air to exchange heat with the metal container 2.3. 15゜16 exchanges heat with metal container 2.3 1#:,
g! IICt is a selectively switched damper. 17.
18 connects the refrigerant flow path of the high-pressure side refrigeration cycle to a metal container 2.
3 is a three-way valve that switches to the heat exchange pipe 9.10.

19.20 is a three-way valve that switches the refrigerant flow path of the low-pressure side refrigeration cycle to the heat exchange pipe 111.12 in the metal container 2.3 during cooling. 21 is a compressor, and 22 is an indoor heat exchanger that cools and heats the room using an indoor blower 23. 24 is a four-way switching valve for heating and cooling, 25.26 is a cavity fringe valve, 27.28 is a check valve, and 29 is an ache emulator.

Next, the operation of this embodiment will be explained. First, the operation of the refrigeration cycle is basically the same as the conventional cycle, in which the compressor 21 is operated in conjunction with the indoor unit (no number) 0 operation.

During heating operation, the indoor heat exchanger 22 operates as a condenser, and the outside heat exchanger 8 operates as an evaporator. During this heating operation, first switch the three-way valve 17 to
The high-pressure refrigerant heat-exchanged in the cavity inside heat exchanger @22 flows into the heat exchange pipe 9. The metal hydride 4 in the metal container 2 is heated by the heat of this high-pressure refrigerant, and high-pressure hydrogen gas is released and enters the metal container 3 through the hydrogen pipe 13 and the valve 13, and the metal hydride SK in it is heated. @Available. As a result, the absorbed heat generated within the metal container 3 heats the surrounding air via the fins 7.

At this time, the damper 15 is controlled to the position B and the damper 16 is controlled to the position A, so that the outdoor side blower 14 generates warm air to heat the outside heat exchanger 8 . In this way, the container 3 becomes an auxiliary heat source for the exchanger 8, improving heating efficiency during heating operation. On the other hand, the metal hydride 4 in the metal container 2 absorbs heat, but is heated by the heat exchanger 19, and the metal hydride 5 generates storage heat, but the heat is forcibly radiated to the outside air by the outdoor fan 14. Therefore, there is no problem in the movement of hydrogen gas due to the pressure difference. The movement of hydrogen gas is continued until the internal pressure of the metal container 2.3 is balanced, and when the movement is completed, the valve 13 is opened to 1, the damper 16 is controlled to the B position, the damper 15 is controlled to the A position, Refrigerant flow path switching three-way valve 17
The passage to the vibrator 9 is switched off, the valve 18 is switched to the heat exchange pipe IOK, and the container 2 becomes an auxiliary heat source for the outside heat exchanger 8 by the reverse action. When the transfer of hydrogen gas between the containers 2.3 at this time is completed, one cycle of operation in the containers 2.3 is completed, and this cycle is sequentially repeated to continuously heat the exchanger 8.

Note that metal hydride 4.5 has a heat storage effect, so valve 1
The control in 3 makes it possible to control the capacity in accordance with the load, and to improve the heating efficiency by effectively utilizing the heat of the high-pressure refrigerant.

Next, cooling operation is performed by switching the valve 24, the indoor heat exchanger 22 operates as an evaporator, and the outdoor heat exchanger 8 operates as an evaporator.
acts as a condenser. During this cooling operation, when the hydrogen gas first moves into the metal container 3 and stops, the low-pressure refrigerant that has been heat exchanged in the indoor heat exchanger 22 flows into the heat exchange pipe 11 by switching the three-way valve 19. . This low-pressure suction refrigerant cools the metal hydride 4 in the metal container 2 on the hydrogen gas release side, and the pressure in the metal container 2 decreases due to gas occlusion. On the other hand, the metal container 3 is heated by external electric heat, and the water bulk pressure inside the metal container 3 becomes high. When the valve 13 is opened, hydrogen gas in the metal hydride 5 is released due to the pressure difference, enters the metal container 2, and is stored in the metal hydride 4 therein. At this time, the metal hydride 5 in the metal container 3 has an endothermic action due to the release of hydrogen gas, so that the space 11C of the container 3ON8 is cooled. Since the damper 15 is controlled to be at position B and the damper 16 is controlled to be at position A, the outdoor side blower 14 promotes heat exchange with the outside air via the fins 7t, and the outdoor side heat is turned into cold air. cooling the exchanger 8 to increase its heat exchange amount;
Improves cooling efficiency during cooling operation. By the way, since the absorbed heat generated in the metal container 2 is cooled by the low-pressure suction refrigerant, there is no problem with the movement of hydrogen gas due to the pressure difference, and the movement of hydrogen gas is continued until the internal pressure of the metal container 2.3 is balanced. and when this is completed, the valve 13
remains open, damper 15 is switched to position A, damper 16 is switched to position B, pipe 11t is interrupted by switching the refrigerant flow path switching three-way valve 19, and valve 20 is switched to heat exchange pipe 12 (4gJJ). , causes the opposite effect to the above.

In this way, the outdoor heat exchange 5et-cooling is performed continuously in either container 2 or 3 due to the flow of hydrogen gas.

In addition, by controlling the hydrogen gas flow rate with the valve 13, it is possible to control the capacity in accordance with the load, and the heat of the low-pressure suction refrigerant can be effectively used to improve the cooling efficiency, as in the case of heating operation. .

As described above, the heating and cooling device for air conditioning of the present invention heats and cools the metal hydride using the high-pressure refrigerant of the freezing device V, the low-pressure suction refrigerant, and air. By absorbing and releasing gas and using the accompanying heat exchange for heating and cooling, it is possible to control the capacity in accordance with the heating and cooling load, and to effectively utilize the heat of high-pressure refrigerant and low-pressure suction refrigerant. This has the effect of improving heating and cooling capacity safely and economically. ! I! By heating or cooling the outdoor heat converter according to the embodiment, the efficiency of heating and cooling can be improved.

[Brief explanation of the drawing]

The drawing is a system diagram in which an embodiment of the present invention is applied to a heating and cooling device.

Claims (2)

[Claims] (1) Equipped with a refrigeration cycle including a compressor, an indoor heat exchanger, and an outdoor heat exchanger, and a pair of heat transfer vessels, each of which is filled with a metal water bulk material and which are connected to each other so that hydrogen gas can pass therethrough. During the heating operation of the refrigeration cycle, the hydrogen gas storage side of the heat transfer container is heated by the high-pressure refrigerant of the refrigeration cycle, and the other heat transfer container is heated. Heating is activated by IK,
A heating and cooling device for heating and cooling, characterized in that during cooling operation of a refrigeration cycle, the hydrogen gas release side of the heat transfer container is cooled by a low-pressure refrigerant of the refrigeration cycle, and the other container is used for cooling operation. (2) The heat transfer container has a twin f on the outside 11 and is arranged to exchange heat on the windward side of the outdoor heat exchanger, and is connected to the refrigeration cycle via a valve to provide heat for high-pressure refrigerant. Exchange vibe and heat exchange pulp S for low-pressure refrigerant - embedded in the heat transfer container and performing heat exchange with the heat transfer container on the outside! l
A heating/cooling device for heating and cooling according to claim 1, wherein the damper is controlled to open for mutual heat exchange through a closed damper.