JPS58178154A - Method of controlling operation of heat pump heating heat accumulator - 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 heat pump heat storage device which combines a heat pump (a contamination device and a heat pump heat storage device) so that heating and heat storage can be performed by switching the operation of both without stopping the compressor. The present invention relates to an operation control method.

How to cope with the indoor load during conventional heat pump heating? 1. i
, control the input to the compressor ON/OFF\jlJ1. ON
A method has been used in which the ratio of time and OFF time is changed according to the load. This ratio varies depending on the load, but generally the compressor OFF time ranges from 36% to 6% of the total heating time.
This means that the compressor is starting and stopping frequently. The bending structure has the disadvantage that when the compressor is started, it applies a considerably larger starting power than during continuous operation, which reduces the efficiency of the compressor. there were. 2.・211. -4 In addition, there is also a known technology in which cooling operation, heating operation, and heat storage ripple cycle are set to ``Jm'' using the heat hong road freezing cycle. It was not intended to be carried out repeatedly, but only one of the operations could be selected and carried out. Therefore, as mentioned above, the operating rate of the pressurized machine is poor and the power consumption due to frequent intermittent operation is large.
/ The efficiency as a stem was poor.

In view of this, the present invention switches the stop time of the compressor during warm-in to heat storage operation, and as a result, the compressor is operated continuously to increase the operating rate of the compressor. The power consumption associated with intermittent operation is suppressed to improve system efficiency, and the heat stored during inhalation and body rest can be effectively used as a heat source for heating or hot water supply.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

The first embodiment will now be described with reference to FIGS. 1-9 and 2.

In the same figure, 1 is a compressor, 2 is a first three-way valve, 3 is an evaporator which is an outdoor heat pump, 4 is a second two-way valve, 6 is a first gear pillar tube, 6 The condenser is an indoor heat exchanger, and these are connected in a ring to form a heating circuit using a refrigeration cycle. Reference numeral 7 denotes a heat storage heat exchanger such as a double-pipe heat exchanger, and a pipe line 7d through which the refrigerant flows is connected to the first capillary tube via the second capillary tube 8.
．． A conduit 9a connected between each of the second three-way valves 2 and 4, through which a heat storage medium such as water flows, is connected via a circulation pump 9' to heat storage +I! ! connected to 10. The heat storage circuit using the refrigeration cycle is constructed using the above-mentioned and "assembling machine 1.
．． Refrigerant pipe line 7a, heat storage heat exchanger 7. Second capillary tube8. Heat storage pipe 9a, circulation pump 9. @Heat tank 10
It is composed of Reference numeral 11 denotes a temperature sensor for detecting the temperature of the evaporator 3, and the temperature detected by the temperature sensor 11 determines the temperature of the first. The second two-way valves 2 and 4 are switched to switch the device according to this embodiment between the heat storage mode and the heating mode. In the heat storage mode, the circulation pop 9 circulates the heat medium inside the heat storage tank 1o to the heat storage heat exchanger 7. Here, MfJ pressure Tsumugiiso 1. 1st゜Second head ball square 2, 4, circulation pump 9. The temperature controls 11 are each connected to a power source 13 via an operation switch 12, as shown in FIG. Note that the seven air blowing stems of the heating reservoir in the same figure are well known, and will therefore be omitted.

Next, the operation of the refrigeration cycle having the configuration shown in FIG.

First, if the temperature inside the room reaches a temperature that requires 1. Each of the second two-way valves 2 and 4 forms a circuit connecting the evaporator 6 and the fat coagulant 3, as shown by the solid line. As a result, the refrigerant vapor compressed by the compressor 1 to a high pressure is condensed in the condenser 3, and releases heat into the room to heat the room.

The refrigerant that has been condensed into a liquid passes through the second three-way valve 4, expands in the first key pillar tube 6, and is removed from outside air or other heat sources by the evaporator 6, which is usually installed outdoors. It gains heat, evaporates, becomes refrigerant vapor, is sucked into the compressor 1, and is again brought to a pressure of R6. Thereafter, a heating cycle is formed by repeating this cycle.

Then, when the indoor temperature rises and the heating stop temperature is detected by the temperature sensor 11, the first. Each second two-way valve 2
, 4 switches from the heating mode to the heat storage mode as shown by the broken line.

Therefore, the refrigerant vapor compressed by the compressor 1 flows through the first two-way valve 2 to the heat storage heat exchanger 7. The refrigerant flowing into the heat storage heat exchanger 7 transfers heat to the relatively low temperature heat medium circulated from the heat storage tank 10 by the circulation pump 9, and is condensed. Here, the heat medium gains heat and becomes high in temperature, flowing into the upper part of the heat storage tank 10. On the other hand, the coagulated liquefied refrigerant flows from the second capillary tube 8 to the evaporator 6 via the second two-way valve 4 and the first capillary tube 6,
It evaporates by obtaining heat from the outside air or other heat source, is sucked into the compressor 3, and is used again. Thereafter, a heat storage cycle is formed by repeating this cycle.

Therefore, the compressor 1 is operated 7 in both the heating mode and the heat storage mode without stopping.

-Also, when the indoor temperature reaches the heating stop temperature, the first.
The second valley force valves 2 and 4 are again switched to the solid line state, and a warm Jjj' cycle is performed. The heat kj stored in the heat storage tank 10 can be used as an auxiliary heat source for heating or for hot water supply, and its uses are wide.

Therefore, the power consumption due to restarting the compressor 1 is suppressed, and heat can be stored during heating operation without interfering with the heating operation, so the functionality of the heat pump heating heat storage device can be significantly expanded. Efficiency can be improved.

In this embodiment, as a heat storage method, the heat medium is circulated between the heat storage heat exchanger 7 and the heat storage tank 1o, but as shown in FIG. Similar effects can be expected with a configuration in which the heat storage tank 14 is provided within the heat storage tank 10, and since a circulation pump is not required, the number of parts can be reduced.

In each of the above embodiments, the refrigeration cycle is capable of performing heating operation, but it may also be possible to perform cooling operation in addition by providing a four-way valve.

As is clear from the above embodiments, the method for controlling the operation of a heat pump heating heat storage device according to the present invention applies at least a compressed rock, an evaporator, a condenser, and a heat exchanger.

Consists of a heat pump heating heat storage device equipped with a heat storage tank,
In the heating operation state of this heat pump heating heat storage device, the indoor load is low F'! , or when heating operation is temporarily interrupted due to excessive heating capacity, the heating operation is switched to heat storage operation, and when the temporary suspension or suspension of heating operation is canceled, This system is designed to perform heating operation, and since the interruption time of heating operation is used to heat the heat storage tank, heat storage operation can be performed without damaging the Iu-1 effect of heating, improving the operating rate of the compressor. , / Stem efficiency is improved.”
- At the same time, the heat source in the heat storage tank can be used effectively.

-Also, when switching from heating operation to heat storage operation or from heat storage operation to heating operation, the compressor is operated continuously without stopping, so high-temperature refrigerant is continuously supplied to the heat storage tank. Alternatively, since it flows to the condenser, heating operation or heat storage operation can be performed with a good start-up, and there is no waiting time for pressure balance to be taken into account when the compressor is stopped. It has various advantages, such as good quality.

[Brief explanation of the drawing]

FIG. 1 is a refrigeration cycle diagram of a heat pump heating heat storage device equipped with an operation control method according to an embodiment of the present invention, FIG. 2 is a schematic electrical circuit diagram of the same heat pump heating heat storage device, and FIG.
The figure is a refrigeration cycle diagram of a heat pump heating heat storage device in another embodiment of the present invention. 1... Compressor, 3... Evaporator, 6...
...Condenser, 7... Heat exchanger for heat storage, 11...
...Temperature sensor.

Claims (2)

[Claims] (1) At least a compressor, evaporator, condenser, heat exchanger,
A heat pump heating heat storage device equipped with a heat storage tank is configured,
In the heating operation state of this heat pump heating heat storage device, when the indoor load decreases and the heating capacity becomes excessive and the heating operation is temporarily interrupted, the heating operation is switched to the heat storage operation, and the temporary An operation control method for a heat pump heating heat storage device that performs heating operation again when heating operation is stopped or paused. (2) Heat pump heating according to claim 1, in which the compressor is operated continuously without stopping when switching from heating operation to heat storage operation or from heat storage operation to heating bright rotation. Operation control method for heat storage device.