JPH03221765A - Refrigerant heating 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 Industrial Application The present invention is a method of heating a refrigerant from an external heat source such as oil or gas and operating a compressor and a heating means of a refrigerant heating method that heats a refrigerant using a mold conveying means. This invention relates to an air conditioner that combines heating, cooling, and dehumidifying means using a pump type heating, cooling, and dehumidifying means.

BACKGROUND OF THE INVENTION Conventionally, this type of heating/cooling machine has been used, for example, as shown in Fig. 3, a refrigerant heating type heating means using a compressor as a mold conveying means, and a cooling means using an open compressor as a normal compressor. It consists of a hybrid heating and cooling circuit. i.e. burner 1
A refrigerant heater 2 that heats the refrigerant, an accumulator 3, a compressor 4, a four-way valve 5, an indoor heat exchanger 7 having a blower 6, and a magnetic valve 8 are connected in order to form the forward direction of the heating circuit. A 210ff valve 7 and a first check valve IO are connected between the discharge pipe of the compressor 4 and the artificial pipe of the accumulator 3, and the amount of refrigerant circulated during heating can be controlled by opening the second solenoid valve 9. A compressor pressure feeding type heating circuit is constituted by a bypass circuit which adjusts the pressure and ensures pressure balance in the event of an abnormality by the first check valve 10.

Next, the cooling circuit includes the compressor 4, the four-way valve 5, the outdoor heat exchanger 12 having the outdoor blower 11, the expander I3, the second check valve 14, the indoor heat exchanger 7, and the four-way valve 5. , the accumulators 3 are connected in sequence.

Problems to be solved by the invention Il! Heating means during the room is provided by the operation of the heating circuit. In other words, even when the temperature is relatively high during the heating season, the circuit system has no choice but to use the combustion heat from the burner 1, which is obtained from a heat source such as oil, to heat the room. For this reason, fuel costs and electrification are often higher in conventional systems than in other heat pump heating and cooling systems. In fact, when the outside temperature is relatively high, heat pump heating and cooling systems offer the advantage of lower running costs.

On the other hand, when the outside temperature is low, heat pump heating systems tend to have lower heating temperatures and higher running costs, so compressor pressure heating systems are less affected by the outside temperature. Although the running cost is a little high, the advantage is that the hot air temperature is high and you can get a comfortable feeling of heating. As described above, the conventional compressor pressure-feeding heating system and the heat pump heating system each have contradictory advantages and disadvantages. Next, the cooling function is obtained by operating the cooling circuit like in the conventional type heater, but recently, as a dehumidifying function, a method of performing cooling operation using ultra-light air has generally been used. i during temperature removal operation! One problem is that since it is essentially an air conditioner operation, it may feel cold depending on the size and temperature of the room, and in addition, there is a drawback that the amount of dehumidification is small. In addition, previously there was a heat pump system that had a dry function, but this system combines the outdoor heat exchange condenser function and the indoor evaporation function and uses it indoors. Although a high dehumidifying capacity can be obtained, since the capacity of the condenser is essentially higher than that of the weed generator, there is a problem in that the room temperature becomes rather high and uncomfortable. This invention is above! The purpose of this invention is to provide a refrigerant-heating air conditioner that has heating, cooling, and dehumidifying functions.

Means for Solving the Problems In order to achieve the above object, the present invention uses a bubble pump as a heat transfer means for transferring the heat of the refrigerant obtained from the burner to the indoor side without using a motor such as a compressor or a pump. It is configured as a hybrid system that uses a heating method that utilizes the pressure difference between the indoor side and the heat source side in addition to lift force, and a conventional heat pump type heating method. As a result of this hybrid method, the indoor heat exchanger is configured as a front and rear stage, separated, and the front and rear stages are used as a condenser and a generator, and the indoor air is heated by the condenser while being cooled and dehumidified by the evaporator. In addition to the conventional method of heating, an outdoor heat exchanger is used as a low-capacity condenser to radiate some of the heat to the outside, convert it into an appropriate amount of heat, and transport it indoors. It has the function of dissipating heat through a compressor. As a dehumidifying function,
It has the advantage of dehumidifying at an appropriate temperature without raising or lowering the indoor temperature. In addition to the function of dehumidifying without changing the room temperature, it also dehumidifies at a temperature higher than or lower than room temperature.

Function The present invention utilizes the above-mentioned flu power to provide a heat pump type heating/cooling circuit when the outside temperature is relatively high during heating.
Operating as a cell, running costs are low and a gentle heating sensation is achieved. In addition, when the outside temperature is low, a refrigerant-type thermal heating circuit using a gas or oil heat source is activated, providing high-temperature hot air heating without being affected by the outside temperature, and at the same time, does not use power as a heat transfer means. Because there is no fuel, running costs are low. When cooling, the heat pump type heating/cooling circuit can be used to cool the room, providing the same heating sensation as before. In addition, for dehumidification function, the heat exchanger on the indoor side is horizontally separated into the front and rear stages, and the front and rear stages are used as a condenser and evaporator to suck indoor air, heat it once in the front condenser, and then transfer it to the rear stage. In addition to the conventional method of cooling and dehumidifying using an evaporator, the outdoor heat exchanger is controlled to a low-capacity fan to change its capacity as a condenser, and a portion of the heat is radiated outside, producing an appropriate amount of heat. Since it has the function of transporting heat into the room and dissipating it in the condenser at the front stage of the room, the dehumidifying function has the advantage of dehumidifying at an appropriate temperature without raising or lowering the indoor temperature too much. In addition to this ability to dehumidify without changing the room temperature too much, it is also possible to dehumidify at temperatures higher or lower than the room temperature depending on the season, so it is an environment that satisfies the comfortable living of residents. It has the feature of creating

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG.

As shown in the figure, a gas-liquid separator 24 having a first inlet channel 20, a second inlet channel 21, a first outlet channel 22, and a second outlet channel 23, and a return pipe 26 of the indoor heat exchange means 25. Communication sliding first check valve 27, receiver 28, fifth check valve 29,
The first inflow path 20 of the gas-liquid separator 24 is connected, and the second inflow path 21 of the gas-liquid separator 24 and the receiver 28 are connected by a first electromagnetic valve 30, and in addition, the second outlet flow The passage 22 and the sixth check valve 31 are connected to control the heat transfer means, and the first and second stage indoor heat exchangers 31
A, 31b is connected between the first expander 32 and the second check valve 33 which regulates the flow direction in series with the first expander 32 and the second check valve 33.
A third check valve 34 whose direction is reversed, and a first expander parallel opening/closing circuit 36 consisting of a 211th valve 35 and an indoor ventilation fan 37 are connected to the indoor heat exchanger means 25.
and the first outlet flow path 2 of the heat transfer means
2 and the refrigerant heater 3 day heater population 39, the second inflow path 2
A refrigerant heating type heating circuit comprising a refrigerant heater means constituted by a refrigerant heater 38 configured by connecting the heater outlet 40 of the refrigerant heater 3 and the refrigerant heater 38, and a burner section 41 for heating the refrigerant heater 38; A seventh check valve 43, the sixth check valve 31, and a four-way opening/closing means 44 are connected to the discharge side of the compressor 42 so as to communicate with the indoor heat exchanger means 25, and the four-way opening/closing means 44 is connected to the discharge side of the compressor 42. and an accumulator 45 of the compressor 42, an outdoor heat exchanger means 47 having an outdoor fan 46, and a first series circuit of a second expander 48, a third electromagnetic valve 49 for opening and closing it, and a fourth The check valve 50 and the second series circuit of the fourth solenoid valve 51 that opens and closes the check valve 50 are connected to the second expander parallel opening/closing circuit 52 which is closed at tII, and the indoor heat exchanger means 25 is connected to heat pump type heating and cooling. , a heat pump heating/cooling dehumidifying circuit having a dehumidifying function, the outdoor heat exchanger means 47, the indoor heat exchanger means 25, and the accumulator 4.
5. The four-way opening/closing means 44 for switching the four-way paths of the seventh check valve 43 is provided, and the refrigerant heater 3B and the 511th
The refrigerant or oil in the refrigerant heater 38 is connected to the outlet of the outdoor heat exchanger 47 through the magnetic valve 53 to sometimes ensure the refrigerant or oil during operation of the heat pump type heating/cooling/dehumidifying circuit. A refrigerant heating type air conditioner is constructed by providing a refrigerant recovery means for recovering the refrigerant by opening the fifth electromagnetic valve 53.

First, the operation of one embodiment of the present invention will be explained.

In the operation of the refrigerant heating type heating circuit, the refrigerant heated from the burner section 49 via the refrigerant heater enters the gas-liquid separator 24 through the second inflow path 21, and after gas-liquid separation, the refrigerant in the two-phase region The second outlet flow path 22, the sixth check valve 31, the four-way opening/closing means 44, and the downstream heat exchanger 31 of the indoor heat exchanger means 25
It flows into the heat exchanger 31a through the third check valve 34 of the first expander parallel opening/closing means 36, condenses, and simultaneously changes its state to a liquid phase as it releases heat.
The gas flows into the receiver 28 through the first check valve 27, and condenses while cooling the gas in the receiver 28. The accumulated liquid refrigerant drops into the gas-liquid separator 24 at the same time as the liquid refrigerant in the gas-liquid separator 24 falls into the refrigerant heater 38 due to the head difference by temporarily opening the first tii valve 30. After that, the first solenoid valve 30 is closed. Said refrigerant heater 3
When the liquid phase flows into the chamber 8, it is heated again, boils, swells, flows again to the gas-liquid separator 28, the four-way opening/closing means 44, and into the room, and is configured to perform radiation heating by the indoor heat exchanger means 25. .

In the heat pump type heating/cooling/dehumidifying circuit, the refrigerant compressed at high temperature by the compressor 42 flows into the four-way opening/closing means 44 and the downstream heat exchanger 31b of the indoor heat exchanger means 25, and undergoes a first expansion while dissipating heat. It passes through the third check valve 34 of the parallel opening/closing circuit, and is adiabatically expanded through the return pipe 26 and the second expander 49 while dissipating heat again in the pre-stage heat exchanger 31a, and is transferred to the outdoor heat exchanger FQ device means 47 to absorb atmospheric heat. It absorbs heat and evaporates into four-way opening/closing means 44, accumulator 45, and compressor 42.
It consists of cyclical circuit operations.

Also, the cooling of the heat pump is the reverse flow of the heat pump heating circuit, that is, the refrigerant compressed at high temperature by the compressor 42 passes through the four-way opening/closing means 44 and is transferred to the outdoor heat exchange means 47.
It dissipates heat, condenses and liquefies, expands adiabatically in the second expander of the second expander parallel opening/closing circuit 52, and then expands adiabatically in the second expander parallel switching circuit 52.
After passing through the 1i1 solenoid valve 49 and the return pipe 26, the indoor air heat is absorbed and evaporated in the first stage heat exchanger 31a of the indoor heat exchanger means, and then passes through the second solenoid valve 35 (open) and then to the second stage heat exchanger 31b.
The air heat is absorbed and evaporated again, and the four-way opening/closing means 44
, from the circuit that returns to the compressor 42 via the accumulator 45.

To dehumidify the heat pump, the high-temperature compressed refrigerant from the compressor 42 passes through the four-way opening/closing means 44 and is transferred to the outdoor heat exchanger means 47.
At this point, the rotational speed of the outdoor fan 46 is lowered, the air volume is reduced, and the heat is controlled to be slightly radiated. Depending on the amount of dehumidification and the quality of the air conditioning, the amount of heat radiation is changed by controlling the rotation speed of the fan from O to the constant rotation speed and controlling the air volume. The refrigerant whose heat has been partially radiated by the outdoor heat exchanger means 47 passes through the fourth solenoid valve 5.
1. After passing through the fourth check valve, the indoor heat exchanger means 25 and the pre-stage heat exchanger 31a warm and radiate heat from the indoor air, while adiabatically expanding it in the first expander 32 of the 111th tensioner parallel opening/closing circuit 36, and dissipating the heat from the post-stage heat exchanger. In the exchanger 31b, while cooling and dehumidifying the indoor air warmed by the front heat exchanger, it flows to the four-way opening/closing means 44 and the accumulator 45, and is kept out of the circulating circuit.

Effects of the Invention As described above, according to the embodiments of the present invention, when the outside temperature is extremely low and the heating load is extremely low, by operating the refrigerant heating type heating circuit to perform heating, high-temperature heating that is always warm can be obtained. The disadvantages of conventional inverter-type heat pump heating, in which the lower the airflow, the lower the heating capacity and the lower the temperature of the hot air, can be solved. In addition, the problem of high running costs is also solved. In addition, if the airflow is relatively high but you want a Ll room, that is, the heating load is low, it may be more appropriate to take advantage of the features of a heat pump heating circuit than a refrigerant heating type heating circuit. This case can be obtained by operating the heating operation of the heat pump type heating/cooling/dehumidifying circuit according to the embodiment of the present invention, and depending on the outside temperature, the operation of the refrigerant heating type heating circuit will be different from that of the heat pump type heating/cooling/dehumidifying circuit. It has the feature that you can select heating operation.

Also, in the season when air conditioning is desired, by performing the cooling operation of the heat pump heating/cooling/dehumidifying circuit according to the embodiment of the present invention, the cooling function can be utilized without any change from the conventional heat pump system.

Furthermore, in the case of seasons in which dehumidification is desired, it is appropriate to operate the same dehumidification function, especially for dehumidification in winter, dehumidification in the middle season, and dehumidification from the rainy season to summer. For example, when dehumidifying in winter, it is better to dehumidify while heating the room slightly, because the room temperature will not drop too much and the room will not freeze, making the room more comfortable. Therefore, in the dehumidifying function of the heat pump type heating/cooling dehumidifying circuit of the present invention, the rotation speed of the outdoor fan is stopped, heat radiation from the outdoor heat exchanger means is suppressed, and the maximum amount of heat of the refrigerant, including the amount of heat, is transferred to the indoor heat. Since it has the function of radiating heat from the heat exchanger in the front stage of the container means and warming the indoor air, it can meet expectations as a dehumidifying function in winter. On the other hand, as for the dehumidification function in the middle of the season, it is also the season when you want to dehumidify the room without heating it too much and in a state that is neither lower nor higher than the room temperature. In response to this demand, in the present invention, the number of rotations of the outdoor fan is increased, and a portion of the heat of the refrigerant is radiated from the outdoor heat exchanger means to obtain an appropriate amount of heat, which is then transferred to the pre-stage heat exchanger of the indoor heat exchanger means. It is also designed to dissipate more heat, so it can function as a dehumidifier during the middle of the season. In addition, dehumidifying during the rainy season or summer is a season when the indoor temperature is high and in some cases, it is desired to dehumidify while also cooling the room. It has the function of dehumidifying while heating the room.

Furthermore, if it is necessary to promote the circulation of indoor air and bring the dehumidification of the entire room to the optimal value, this can be done without reducing the rotation speed of the indoor fan, and without lowering the temperature of the entire room too much. However, in the dehumidification function of this embodiment, the number of rotations of the outdoor fan is increased to increase the amount of heat dissipated from the outdoor heat exchanger means, and the number of rotations of the indoor fan is increased without decreasing the number of rotations of the indoor fan. Since the control structure is such that dehumidification is performed by reducing the amount of heat released from the pre-stage heat exchanger of the means, there is a feature that it is possible to dehumidify the entire room and control the appropriate temperature.

[Brief explanation of drawings]

FIG. 1 shows a refrigerant heating type 20 according to an embodiment of the present invention.
... Gas-liquid separator, 25 ... Indoor heat exchanger means, 27 ... First check valve, 28 ...
-Receiver, 36...first expander opening/closing means,
38... Refrigerant heater, 41... Burner section, 42... Compressor, 43... Return check valve, 44... Four sides Road opening/closing means, 52...
- Second expander opening/closing means.

Claims (2)

[Claims] (1) a refrigerant heating means consisting of a burner section and a refrigerant heater that heats the refrigerant from the burner section; a heat transfer means consisting of a first electromagnetic valve receiver, a gas-liquid separator, and a first check valve; A first expander is connected between the first and second indoor heat exchangers in parallel, consisting of a first expander, a second check valve with directionality, a third check valve, and a second solenoid valve. A refrigerant heating type heating circuit consisting of an indoor heat exchanger means constituted by connecting switching circuits, a compressor means, a four-way switching means, an indoor heat exchange means, a second
a second expander parallel opening/closing circuit comprising an expander, a fourth check valve of a first series circuit of a third solenoid valve that opens and closes the expander, and a second series circuit of a fourth solenoid valve that opens and closes the expander; A heat pump type air conditioning/heating dehumidification circuit consisting of the indoor heat exchanger means, the refrigerant heating means and the heat transfer between the outdoor heat exchanger means and the indoor heat exchanger means, and between the four-way opening/closing means and the compressor. Refrigerant heating type air conditioner with connected means. (2) a gas-liquid separator having a first inflow path, a second inflow path, a first outlet flow path, and a second outlet flow path; and the first check valve communicating with the return pipe of the indoor heat exchanger means; connecting a receiver, a fifth check valve, and a first inflow path of the gas-liquid separator;
A first electromagnetic valve connects the second inflow path of the gas-liquid separator and the receiver, and further connects the second outlet flow path and a sixth check valve to constitute a heat transfer means, and the first Step, 2nd
A series circuit between the indoor heat exchangers of the stages includes a first expander and a second check valve that regulates the flow direction thereof, and a third check valve whose direction is opposite to that of the second check valve; A first expander parallel opening/closing circuit consisting of a second electromagnetic valve is connected to constitute indoor heat exchanger means, and in addition, the first outlet flow path of the heat transfer means and the heater inlet of the refrigerant heater are connected to the A refrigerant heating type heating circuit in which the refrigerant heater means is constituted by a refrigerant heater in which the second inflow path of the heat transfer means is connected to the heater outlet of the refrigerant heater, and a burner section for heating the refrigerant heater; Refrigerant recovery in which a fifth electromagnetic valve connects a compressor means with a seventh check valve connected to the discharge side of the compressor, an outdoor heat exchanger means, and the refrigerant heater, and recovers the refrigerant in the refrigerant heater. Claim 1 consisting of means
The refrigerant heating type air conditioner described.