JPS59208363A - Heat accumulation type air conditioner - 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 Field of Application of Industry-42 The present invention relates to a P1-pump type air conditioner having a heat storage tank in the refrigeration cycle.

Conventional configuration and its problems Conventionally, when operating a P1-pump type air conditioner, when defrosting operation is performed, the refrigeration cycle is switched to cooling operation,
Since the frost that has formed on the outdoor heat exchanger is thawed by the heat from the compressor or the indoor side, the defrosting operation has the disadvantage that the indoor temperature decreases and the heating effect deteriorates. was.

Purpose of the Invention The present invention is intended to eliminate all of the above-mentioned drawbacks of the conventional technology, and its primary purpose is to provide effective heating without causing cold or draft by continuing the entire heating operation even during defrosting operation. .

Composition of the Invention The regenerative air conditioner of the present invention includes a compressor, a four-way switching -7F
, an indoor heat exchanger, a pressure reduction mechanism, an outdoor heat exchanger, a 2 m heat tank, and a first bypass II circuit for storing heat during the refrigeration cycle into the heat storage tank during heating operation. an electromagnetic means for fully controlling the flow of refrigerant to the first bypass circuit;
Reverse medium-1F, the decompression mechanism and the heat stored in the heat storage tank are recovered by freezing and then in the fuel tank, and the depressurization mechanism is bypassed to the second bypass circuit. A refrigeration cycle is constructed by connecting a solenoid valve and a pressure reducing mechanism that completely control the flow of refrigerant, a third bypass circuit 16 equipped with a reversing valve, and a solenoid valve that controls the flow of refrigerant to the third bypass circuit. When a heating heat pump 1i15 of a regenerative air conditioner is configured and has a heat storage tank in the refrigeration cycle,
When the load is small, the surplus heat in the refrigeration cycle is stored in the heat storage tank, and when the load is large and frost forms on the outdoor heat exchanger 2g and the heating capacity decreases, the heat stored in the heat storage tank is used. This is related to the defrosting control of the refrigeration cycle that performs defrosting, and it detects all the loads on the indoor or outdoor side and performs heat storage operation using a heat storage tank. Continuing the heating σ■ rotation even during cooling or defrosting operation to provide effective heating without creating a cold trough 6.
DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to the accompanying drawings illustrating one embodiment thereof.

1 is a compressor, 2 is a four-way switching-JR, and 3 is an indoor heat exchanger.
<w, 4 is a pressure reduction mechanism, 5 is an outdoor heat exchanger, 6d is a heat storage tank for storing excess heat during the refrigeration cycle;
In S, a refrigerant pipe connected to the refrigeration cycle Jfj is arranged, and the heat storage material 6b is filled.1°7.8.9
)", and the flow of refrigerant in the refrigeration cycle is fully controlled by controlling these 11+[] with solenoid valves. 1
4 is a first bypass circuit, 161 is a second bypass circuit, and 16 is a third bypass circuit for storing heat in the heat storage tank 6 or for heating all times +1y 1. Each of the bypass circuits C is equipped with a pressure reducing mechanism 10, 11 and a 0/inverse 11-pu ↑12, 13, which are arranged in an annular manner as shown in the figure. The entire well-known refrigeration cycle is constructed by connecting E. In addition, in the figure, A
indicates the indoor unit, and B indicates the outdoor unit.

In the above configuration, during cooling operation, the refrigerant discharged from the compressor 1 is switched between four-way switching - JF2. Electromagnetic J↑9゜ 5+ pressure reduction mechanism for outdoor heat exchange 4. The indoor heat exchanger 3 constitutes a refrigeration cycle that returns to the compressor 1 through the four-way ψ exchanger r2.

During the heating P1 operation, the solenoid valves 7 and 8 are closed and the solenoid valve t9 is opened, and the refrigerant discharged from the compressor 1 is transferred to the four-way switching valve 2. Indoor heat exchanger 3. Decompression mechanism 4. Outdoor heat exchange k 5 + electromagnetic side 9. A refrigeration cycle is configured in which the refrigeration cycle passes through the four-way switching valve 2 and returns to the compressor 1.

When performing heat storage using the heat storage tank 6, close the electromagnetic valve ↑7,
When the solenoid valve 8 is fully opened and the solenoid valve 9 is opened, the refrigerant discharged from the compressor 1 passes through the four-way switching valve ↑2. The refrigerant flows through the refrigerant piping, exchanges heat with the heat storage tank 6a, and condenses, and the heat held by the refrigerant is stored in the heat storage tank 6.The refrigerant that leaves the heat storage tank 6 is , the pressure is reduced by the pressure reduction mechanism 10 through the reverse tube T12, evaporated by the outdoor heat exchange 'ta, and the heat 'ff from the outside air is taken in from the outside air. Return to step 1. Configure the entire refrigeration cycle.

Next, during defrosting operation without removing the frost on the outdoor heat exchanger 6 using the heat stored in the heat storage tank 6, the solenoid valve 7
Fully open, solenoid-Jf8 closed, solenoid valve 9 closed (7, the refrigerant discharged from the compressor 1 enters the second bypass circuit 15 through the four-way switching valve 2, indoor heat exchanger 3, and the solenoid It passes through all the valves 7 and enters the outdoor heat exchanger 5', where the heat in the refrigeration cycle melts the frost on the outdoor heat exchanger 6 and condenses through heat exchange.

The refrigerant leaving the outdoor heat exchanger 6 is transferred to the third bypass circuit 1.
6, the pressure is reduced by the pressure reducing mechanism 11, and the heat storage tank 6 is entered.

Here, the heat stored in the heat storage tank 6 is recovered from the heat storage tank 6a through the refrigerant piping into the refrigeration cycle, and after the refrigerant evaporates and absorbs heat, it passes through the reverse 1 door r13° four-way switching valve 2 and the compressor 1.
Configure the refrigeration cycle to return to.

In the above configuration, if the load on the indoor side is small and the heating capacity is not very necessary, the heat storage tank can be used for condensing. The excess heat d during the refrigeration cycle is stored in the heat storage tank, and the temperature outside becomes low (d: The load on the indoor side is large and frost forms on the outdoor heat exchanger F-). In this case, the outdoor heat exchanger is used as a condenser, and the heat from the condensation of the refrigerant in the refrigeration cycle thaws the frost and liquefies the refrigerant, using the heat stored in the heat storage tank. By controlling the heat storage tank to be used as an evaporator, energy-saving operation can be continued without waste.

Effects of the Invention As is clear from the above embodiments, the regenerative air conditioner of the present invention stores excess heat during the refrigeration cycle and uses that heat during operation to continue heating operation. In addition to being able to defrost even the coldest air, it also has the advantage of cold draft due to the reduction in heating capacity, which gives a feeling of cold air to the human body.

[Brief explanation of the drawing]

The drawing is a refrigeration cycle diagram of a regenerative air conditioner showing an embodiment of the present invention. . 1...Compressor, 5...Outdoor heat exchanger, 6...
...Heat storage tank, 7,8.9...Solenoid valve, 14...
- First bypass circuit, 16... second bypass circuit, 16... third bypass circuit.

Claims (1)

[Scope of Claims] A compressor, a four-way switching power, an indoor heat exchange tube, a pressure reducing mechanism, an outdoor heat exchanger, and a heat storage tank are provided, and during heating operation, all of the heat from the refrigeration cycle is stored in the heat storage tank. The first bypass circuit, the solenoid valve that completely controls the flow of refrigerant to this first bypass circuit, is reverse ↑. A pressure reducing mechanism, a second bypass circuit bypassing the pressure reducing mechanism in order to recover the heat stored in the heat storage tank during the refrigeration cycle, and a solenoid valve controlling the flow of refrigerant to the second bypass circuit. and the third with a decompression mechanism and reverse upward ↑
A refrigeration cycle is constructed by connecting electromagnetic valves that control the flow of refrigerant to the bypass circuit and the third bypass circuit, and when the heating heat pump is operated, the heat storage tank, the second bypass circuit, and the third bypass circuit are connected. A regenerative air conditioner that defrosts frost that has formed on an outdoor heat exchanger during low outside temperatures without stopping heating operation, using a 111-way air conditioner.