JPH0745982B2 - Heat pump device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a heat pump device that uses a non-azeotropic mixed refrigerant and stores a high boiling point refrigerant by composition separation to change the composition.

Conventional technology Conventionally, using a non-azeotropic mixed refrigerant, as a heat pump device that stores a high boiling point refrigerant by composition separation and changes the composition,
A device as shown in FIG. 4 has been proposed. In FIG. 4, 1 is a compressor, 2 is a condenser, 3 is a throttle device, and 4 is an evaporator, and these are connected by piping to form a main circuit. 5 is a rectification separator filled with a packing material, the upper part of which is connected to the outlet of the condenser 2 through a pipe 6 and the decompressor 7
Are connected to the inlet of the evaporator 4 respectively. A reservoir 8 is arranged below the rectification separator 5, the bottom of which is connected to a decompressor 7 via an on-off valve 9, and a heater 10 is provided inside the reservoir 8.

A method of enclosing a non-azeotropic mixed refrigerant in such a device and varying the composition will be described. First, when operating with the composition of the mixed refrigerant enclosed (no separation mode), by turning off the heater 10, the reservoir 8 simply stores the excess refrigerant, and when the on-off valve 9 is closed, it is stored as it is. However, when it is opened, it is stored and partly flows out to the evaporator 4 via the pressure reducer 7. Therefore, the main circuit operates with the composition of the mixed refrigerant rich in the high boiling point refrigerant in the sealed state. Will be done. Next, when the high-boiling-point refrigerant is stored and operated with a composition rich in the low-boiling-point refrigerant (separation mode), when the on-off valve 9 is closed and the heater 10 is turned on, the refrigerant inside the reservoir 8 is mainly The low-boiling-point refrigerant is vaporized and rises inside the rectification separator 5. At this time, the liquid refrigerant is supplied from the outlet of the condenser 2 through the pipe 6, and the rectification is performed inside the rectification separator 5 by gas-liquid contact. When the action occurs, the rising gas has an increased concentration of the low-boiling-point refrigerant, while the descending liquid has the increased concentration of the high-boiling-point refrigerant, and the high-boiling-point refrigerant is stored in the reservoir 8 in a condensed liquid state. . On the other hand, the rising gas rich in low-boiling-point refrigerant flows into the evaporator 4 via the pressure reducer 7, so that the main circuit can be operated with a composition rich in low-boiling-point refrigerant.

This type of variable composition heat pump device is
For example, it is applied to a hot water supply device, and in normal use it operates with the encapsulation composition rich in high boiling point refrigerant to obtain high temperature water, and when it is necessary to store hot water in the shortest possible time, it is rich in low boiling point refrigerant It is possible to operate with a different composition.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the heat pump device as described above, since the rectification action is caused by using the heater, the energy efficiency in the case of varying the composition becomes low. That is, the amount of heat heated by the heater is only used for gas generation for rectification, and for example, there is a drawback that heat is not recovered to the hot water supply side, and the heat pump device has a four-way valve. In addition, in order to switch the flow direction of the refrigerant from the compressor and use the cooling side, it is possible to guide the refrigerant gas with a high concentration of the low boiling point refrigerant flowing out from the upper part of the rectification separator to the evaporator. However, there is a drawback that the pressure loss of the evaporator increases.

The heat pump device of the present invention can effectively utilize the amount of heat used for gas generation for rectification separation during heating operation,
Moreover, the present invention provides a heat pump cycle configuration that can perform rectification separation without any trouble even during cooling operation.

Means for Solving the Problems The heat pump device of the present invention connects the upper part of a rectification separator provided with a reservoir having a heating means in the lower part to the outlet side pipe of the condenser, and opens and closes the lower part of the reservoir. Connect to a low pressure pipe such as an evaporator through a valve, connect a gas-liquid separator to the upper part of the rectification separator, and connect the liquid side outlet of the bottom of this gas liquid separator to the inlet side pipe of the evaporator. A refrigerant ejector is provided in the inlet side pipe of the condenser, and the gas side outlet at the upper part of the gas-liquid separator and the suction port of the refrigerant ejector are connected by pipes.

Further, in the heat pump device of the present invention, the first check valve and the first check valve are provided in the pipe between the expansion device and the utilization side heat exchanger, the upper part of the rectification separator having the reservoir having the heating means at the lower part. Connected via a first pressure reducer provided in parallel with the valve, and further connecting the upper part of the rectification separator to a pipe between the heat source side heat exchanger and the expansion device via a first on-off valve. The reservoir is connected to a pipe between the heat source side heat exchanger and the expansion device via a second opening / closing valve, and a gas-liquid separator is connected to an upper portion of the rectification separator. The liquid side outlet of the separator bottom is connected to the pipe between the heat source side heat exchanger and the expansion device,
A refrigerant ejector is provided between the compressor and the four-way valve, and a gas side outlet at an upper portion of the gas-liquid separator and a suction port of the refrigerant ejector are connected to each other.

Further, in the heat pump device of the present invention, the first check valve and the first reverse valve are provided in the pipe between the expansion device and the utilization side heat exchanger, the upper part of the rectification separator having the reservoir having the heating means at the lower part. Connected via a first pressure reducer provided on the stop valve, and further connecting the upper part of the rectification separator to a pipe between the heat source side heat exchanger and the expansion device via a first on-off valve, Further, the reservoir is connected to a pipe between the heat source side heat exchanger and the expansion device via a second opening / closing valve, and a gas-liquid separator is connected to an upper portion of the rectification separator, and the gas-liquid separation is performed. A liquid side outlet of the bottom of the vessel is connected to a pipe between the heat source side heat exchanger and the expansion device, a refrigerant ejector is provided between the four-way valve and the use side heat exchanger, and the gas-liquid separator upper portion is provided. Of the refrigerant ejector and the suction port of the refrigerant ejector through the third opening / closing valve, It is characterized in the provision of the fourth check valve for bypassing the refrigerant ejector.

Action With the above-described configuration, in the separation mode, the present invention vaporizes mainly the low boiling point refrigerant in the refrigerant inside the reservoir by the heater, and rises inside the rectification separator. At this time, the liquid refrigerant is supplied from the outlet of the heat exchanger that serves as the condenser, and the rectification action occurs due to the gas-liquid contact inside the rectification separator, and the rising gas increases the concentration of the low boiling point refrigerant, and conversely falls. The concentration of the high boiling point refrigerant in the liquid is increased, and the high boiling point refrigerant is stored in the reservoir in a condensed state. On the other hand, the gas rich in the low-boiling-point refrigerant that has risen mixes with a part of the supplied liquid refrigerant and enters the gas-liquid separator. During the heating operation, it is separated into a gas refrigerant and a liquid refrigerant here, and the gas refrigerant is guided to the suction port of the refrigerant ejector, so that it again flows into the heat exchanger that serves as the condenser and is given by the heating heater when condensing. The amount of heat can be effectively utilized, and the separated heat refrigerant can be guided to a heat exchanger that serves as an evaporator and absorbed and evaporated from a heat source such as outside air. Further, even during the cooling operation, rectification separation can be performed without any trouble.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an embodiment of the heat pump device of the present invention,
Reference numeral 11 is a compressor, 12 is a condenser, 13 is a throttle device, and 14 is an evaporator, and these are connected by piping to form a main circuit. 15 is a rectification separator filled with a packing material, the upper part of which is connected to the outlet of the condenser 12, and the gas-liquid separator 16 is connected to the upper part of the rectification separator 15 as well. The liquid side outlet at the bottom is connected to the inlet of the evaporator 14 via the pressure reducer 17, the refrigerant ejector 18 is provided at the inlet of the condenser 12, and the gas side outlet of the upper part of the gas-liquid separator 15 is the suction port of the refrigerant ejector 18. It is connected. In addition, a reservoir 20 with a built-in heater 19 is arranged below the rectification separator 15.
The lower part of 20 is connected to the evaporator 14 via an on-off valve 21 and a pressure reducer 17. The liquid-side outlet at the bottom of the gas-liquid separator 16 has a float valve structure with a float 22 so that only the liquid refrigerant that has flowed into the gas-liquid separator 16 is reliably discharged from the liquid-side outlet. .

A method of enclosing a non-azeotropic mixed refrigerant in such a heat pump device and varying the composition will be described. First, in the non-separation mode, the heater 19 is turned off and the on-off valve 21
By opening, the excess refrigerant is stored in the reservoir 20, and only a part of the excess refrigerant flows out to the evaporator 14 via the pressure reducer 17, so that the main circuit is rich in high boiling point refrigerant in the sealed state. The operation will continue with the composition of the mixed refrigerant. Next, in the separation mode, the heater 19 is turned on and the on-off valve 21 is closed to vaporize mainly the low boiling point refrigerant in the refrigerant inside the reservoir 20 and raise the inside of the rectification separator 15. At this time, the liquid refrigerant is supplied to the upper part of the rectification separator 15 from the outlet of the condenser 12, the rectification action occurs due to the gas-liquid contact inside the rectification separator 16, and the rising gas has a high concentration of the low boiling point refrigerant, and the reverse The concentration of the high-boiling-point refrigerant increases in the liquid descending to the high-boiling-point refrigerant, and the high-boiling-point refrigerant is stored in the reservoir 20 in a condensed liquid state. On the other hand, the gas rich in the low boiling point refrigerant that has risen is mixed with a part of the liquid refrigerant supplied and enters the gas-liquid separator 16, where it is separated into a gas refrigerant and a liquid refrigerant, and the gas refrigerant enters the condenser 12 inlet. It is guided to the suction port of the provided refrigerant ejector 18. By the suction effect of the refrigerant ejector 18, the rectification action can be promoted, and when the gaseous refrigerant flows into the condenser 12 again and is condensed, the heat quantity given by the heater can be effectively utilized. On the other hand, the separated liquid refrigerant is introduced from the liquid-side outlet at the bottom of the gas-liquid separator 16 to the evaporator 14 via the pressure reducer 17, where it is mixed with the refrigerant flowing in the main circuit and is supplied from a heat source such as outside air. It is endothermically evaporated and again sucked into the compressor. In this way, the main circuit can be operated with a mixed refrigerant composition rich in low boiling point refrigerants.

To restore the composition of the main circuit to the original condition, set the heater 19 to OF
Then, when the on-off valve 21 is opened, the high boiling point refrigerant in the reservoir 20 is mixed into the main circuit, and the main circuit has a composition of the mixed refrigerant rich in the high boiling point refrigerant.

It goes without saying that a high temperature heat source in the refrigeration cycle such as the discharge pipe of the compressor 11 may be used instead of the heater 19.

FIG. 2 is a configuration diagram of another embodiment of the heat pump device of the present invention, in which 23 is a compressor, 24 is a four-way valve, 25 is a use side heat exchanger, 26 is a throttle device, and 27 is a heat source side heat exchanger. The main heat pump circuit is configured by connecting these with piping. 28 is a rectification separator filled with a packing material, and the upper part of the rectification separator is connected to a pipe between the expansion device 26 and the heat exchanger 25 on the use side.
The check valve 29 and the first decompressor 30 are connected by a parallel circuit, and the upper part of the rectification separator 28 is connected to the heat source side heat exchanger 27 and the expansion device 26.
Is connected to the pipe between them via a first on-off valve 31, and a reservoir 33 having a heater 32 built in is arranged below the rectification separator 28. It is connected to a pipe between the heat source side heat exchanger 27 and the expansion device 26 via the pressure reducer 34 and the second opening / closing valve 35. Further, a gas-liquid separator 36 is connected to the upper part of the rectification separator 28, and the liquid-side outlet at the bottom of the gas-liquid separator 36 is passed through a second check valve 37 and a second decompressor 34.
The refrigerant ejector 38 is provided between the compressor 23 and the four-way valve 24 while being connected to the pipe between the heat source side heat exchanger 27 and the expansion device 26, and the gas side outlet at the upper part of the gas-liquid separator 36 and the refrigerant ejector.
The suction port of 38 is connected via a third check valve 39. Incidentally, the liquid side outlet at the bottom of the gas-liquid separator 36 has a float valve structure by the float 40, so that only the liquid refrigerant that has flowed into the gas-liquid separator 36 is reliably discharged from the liquid side outlet. .

A method of enclosing a non-azeotropic mixed refrigerant in such a heat pump device and varying the composition will be described. First, in the non-separation mode, the heating heater 32 is turned off, the first opening / closing valve 31 is closed, and the second opening / closing valve 35 is opened, so that at the time of heating operation, a part of the refrigerant condensed in the usage-side heat exchanger 25. Is split, enters the reservoir 33 via the first check valve 29 and the rectification separator 28, and part of it is stored as excess refrigerant and the rest is second
Since it flows out to the heat source side exchanger 27 via the on-off valve 35 and the second pressure reducer 34, the main circuit operates with the composition of the mixed refrigerant rich in the high boiling point refrigerant in the sealed state. Further, even during the cooling operation, a part of the refrigerant condensed in the heat source side heat exchanger 27 is diverted and enters the reservoir 33 via the second pressure reducer 34 and the second opening / closing valve 35, and a part of the excess refrigerant. And the rest flows out from the upper part of the rectification separator 28 to the utilization side heat exchanger 25 through the first pressure reducer 30, so that the main circuit is filled with a composition of a mixed refrigerant rich in high boiling point refrigerant. You will continue to drive.

Next, in the mode with separation during heating operation, the heater 32
Is turned on and the second on-off valve 35 is closed, the low-boiling-point refrigerant mainly in the refrigerant inside the reservoir 33 is vaporized by the heater 32, and the inside of the rectification separator 28 rises. At this time, a part of the liquid refrigerant condensed in the utilization side heat exchanger 25 is diverted and supplied to the upper part of the rectification separator 28 via the first check valve 29, and the gas-liquid contact is made inside the rectification separator 28. The rectification action occurs due to the rising gas, the concentration of the low boiling point refrigerant increases, conversely the descending liquid increases the concentration of the high boiling point refrigerant, the high boiling point refrigerant is stored in the reservoir 33 in a condensed liquid state. It will be. On the other hand, the gas rich in the low-boiling-point refrigerant that has risen mixes with a part of the supplied liquid refrigerant and enters the gas-liquid separator 36, where it is separated into a gas refrigerant and a liquid refrigerant, and the gas refrigerant is compressed with the compressor 23 and four sides. It is guided to the suction port of the refrigerant ejector 38 provided between the valve 24 and the valve. By the suction effect of the refrigerant ejector 38, the rectification action can be promoted, and the gas refrigerant can effectively utilize the heat quantity given by the heater when flowing into the utilization-side heat exchanger 25 and condensing again. On the other hand, the separated liquid refrigerant is a gas-liquid separator.
From the liquid side outlet at the bottom of the 36, it is guided to the heat source side heat exchanger 27 via the second check valve 37 and the second pressure reducer 34, where it is mixed with the refrigerant flowing in the main circuit, and from the heat source such as the outside air. It is endothermically evaporated and again sucked into the compressor 23. In this way, the main circuit can be operated with a mixed refrigerant composition rich in low boiling point refrigerants.

Also, in the mode with separation during cooling operation, the heating heater
By turning on 32, opening the first on-off valve 31, and closing the second on-off valve 35, the heater 32 vaporizes mainly the low boiling point refrigerant in the refrigerant inside the reservoir 33, and the inside of the rectification separator 28 To rise. At this time, a part of the liquid refrigerant condensed in the heat source side heat exchanger 27 is diverted and supplied to the upper portion of the rectification separator 28 via the first opening / closing valve 31 and is contacted inside the rectification separator 28 by gas-liquid contact. The rectification action occurs, the rising gas has a high concentration of the low-boiling-point refrigerant, while the descending liquid has a high concentration of the high-boiling-point refrigerant, and the high-boiling-point refrigerant is stored in the reservoir 33 in a condensed liquid state. become. On the other hand, the increased gas rich in low boiling point refrigerant flows into the utilization side heat exchanger 25 via the first pressure reducer 30. This allows the main circuit to operate with a mixed refrigerant composition rich in low boiling point refrigerants.

To restore the composition of the main circuit to the original condition, set the heater 32 to OF
Then, when the first on-off valve 31 is closed and the second on-off valve 35 is opened, the high boiling point refrigerant in the reservoir 33 is mixed into the main circuit, and the main circuit is filled with the high boiling point refrigerant rich mixture. It becomes the composition of the refrigerant.

It is needless to say that a high temperature heat source in the refrigeration cycle such as the discharge pipe of the compressor 23 may be used instead of the heater 32, and in this case, the load of the heat source side heat exchanger 27 which becomes the condenser. Can be reduced.

FIG. 3 is a block diagram of another embodiment of the heat pump device of the present invention, in which the same functional parts as those of the embodiment of FIG. 2 are designated by the same reference numerals.

In this embodiment, a refrigerant ejector 38 is provided between the four-way valve 24 and the use side heat exchanger 25, and the gas side outlet at the upper part of the gas-liquid separator 36 and the suction port of the refrigerant ejector 38 are connected to the third opening / closing valve 41. And the refrigerant ejector 38 during the cooling operation.
A fourth check valve 42 is provided to bypass the.

In this embodiment, the heater 32 is used in the non-separation mode.
Is turned off, the first opening / closing valve 29 and the third opening / closing valve 41 are closed, and the second opening / closing valve 35 is opened. Also, in the separation mode during heating operation, the heating heater 32 is turned on and the first opening / closing valve is opened. valve
By closing 29 and the second opening / closing valve 35 and opening the third opening / closing valve 41, the heater 32 is further turned on in the separation mode during the cooling operation to turn on the second opening / closing valve 35 and the third opening / closing valve 41. The second opening / closing valve 31 by opening the first opening / closing valve 31.
The composition of the non-azeotropic mixed refrigerant can be changed by the same method as that of the embodiment shown in the figure. Therefore, for rectification separation, cooling is performed without operating the refrigerant ejector 38 to recover the heat amount consumed by the heater 32 and recover the heat amount consumed by the heater 32 only during the effective heating operation. During operation, the refrigerant gas with a high concentration of low-boiling-point refrigerant flowing out from the upper portion of the rectification separator 28 serves as an evaporator, and the heat exchanger 25 on the use side
Will be guided to the suction side of the compressor 23, preventing the increase of the pressure loss of the evaporator, the refrigerant flowing through the main circuit also bypasses the refrigerant ejector 38, the refrigerant ejector 38 of the pressure loss. It is possible to prevent the cause.

EFFECTS OF THE INVENTION As is apparent from the above description, the heat pump device of the present invention connects the upper part of the rectification separator provided with the reservoir having the heating means in the lower part to the condenser outlet, and the lower part of the reservoir. It is connected to a low-pressure pipe such as an evaporator through an on-off valve, and a gas-liquid separator is provided which is connected to the upper part of the rectification separator, and the liquid-side outlet at the bottom of this gas-liquid separator is connected to the evaporator inlet. Along with, a refrigerant ejector is provided at the condenser inlet, and since the gas side outlet of the gas-liquid separator and the suction port of the refrigerant ejector are connected, in the separation mode,
The rectification action can be promoted by the suction effect of the refrigerant ejector, and the gas-liquid separator connected to the upper part of the rectification separator only reuses the rising gas refrigerant rich in low boiling point refrigerant to the heat exchanger inlet side. Therefore, the heat release when the gas refrigerant is condensed, that is, the heat quantity given by the heater (heat quantity used for gas generation) can be effectively used, and the circulation quantity of the liquid refrigerant flowing to the evaporator is reduced. There is no such thing.

Further, in the heat pump device of the present invention, the first check valve and the first decompressor are provided in the pipe between the expansion device and the utilization side heat exchanger, where the upper part of the rectification separator provided with the reservoir having the heating means in the lower part is provided. Connected by a parallel circuit, the upper part of the rectification separator is connected to the pipe between the heat source side heat exchanger and the expansion device via a first opening / closing valve, and the reservoir is connected to a second opening / closing valve. Is connected to the pipe between the heat source side heat exchanger and the expansion device, and a gas-liquid separator connected to the upper part of the rectification separator is provided, and the liquid side outlet at the bottom of the gas-liquid separator is the heat source. While connecting to the pipe between the side heat exchanger and the expansion device, a refrigerant ejector is provided between the compressor and the four-way valve, and the gas side outlet of the gas-liquid separator upper part and the suction port of the refrigerant ejector. Since it is a connected configuration, it can be used as a heating heater in the mode with separation during heating operation. The amount of heat given to the unit (the amount of heat used to generate gas) can be effectively used, and rectification separation can be performed during cooling operation as well as during heating operation, without any problem, and instead of a heater. By using a high temperature heat source in the refrigeration cycle such as the discharge pipe of the compressor, it is possible to reduce the load on the heat source side heat exchanger serving as a condenser.

Further, in the heat pump device of the present invention, the first check valve and the first decompressor are provided in the pipe between the expansion device and the utilization side heat exchanger, where the upper part of the rectification separator provided with the reservoir having the heating means in the lower part is provided. Connected by a parallel circuit, the upper part of the rectification separator is connected to the pipe between the heat source side heat exchanger and the expansion device via a first opening / closing valve, and the reservoir is connected to a second opening / closing valve. Is connected to the pipe between the heat source side heat exchanger and the expansion device, and a gas-liquid separator connected to the upper part of the rectification separator is provided, and the liquid side outlet at the bottom of the gas-liquid separator is the heat source. While being connected to the pipe between the side heat exchanger and the expansion device, a refrigerant ejector is provided between the four-way valve and the utilization side heat exchanger, and the gas side outlet at the upper part of the gas-liquid separator and the suction of the refrigerant ejector. And a refrigerant ejector during cooling operation. Because of the configuration in which the fourth check valve for bypassing is provided, the amount of heat consumed by the heating heater is collected for rectification separation, and the refrigerant ejector is activated and consumed by the heating heater only during effective heating operation. During a cooling operation that does not need to recover the generated heat quantity, the refrigerant gas with a high concentration of low-boiling point refrigerant flowing out from the upper part of the rectification separator is bypassed to the heat exchanger on the utilization side and becomes the suction side of the compressor. It will lead to prevent the increase of pressure loss of the evaporator and
By bypassing the refrigerant ejector with the refrigerant flowing through the main circuit as well, it is possible to prevent the refrigerant ejector from causing a pressure loss, so that it exerts a great practical effect.

[Brief description of drawings]

1 is a block diagram of a heat pump device according to an embodiment of the present invention, FIG. 2 is a block diagram of a heat pump according to another embodiment of the present invention, and FIG. 3 is a block diagram of a heat pump according to another embodiment of the present invention. FIG. 4 is a structural diagram of a conventional heat pump device. 11, 23 ...... Compressor, 12 ...... Condenser, 13, 26 ...... Throttling device, 14 …… Evaporator, 15, 28 …… Fractionation separator, 16, 36 ……
Gas-liquid separator, 18, 38 …… Refrigerant ejector, 24 …… Four-way valve, 25 …… Use side heat exchanger, 27 …… Heat source side heat exchanger, 29
...... First check valve, 30 ...... First decompressor, 31 ...... First on-off valve, 32 ...... Heating heater, 33 ...... Reservoir, 34 ...... Second decompressor, 35 ...... Second opening and closing Valve, 37 ... second check valve, 39 ... third check valve, 40 ... float, 41 ... fourth check valve.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Tomizawa 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Koji Arita, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A non-azeotropic mixed refrigerant is sealed, a compressor, a condenser, a throttle device, and an evaporator are sequentially connected by piping to form a main circuit, and a reservoir having a heating means is provided at a lower portion. The upper part of the rectification separator is connected to the outlet side pipe of the condenser, the lower part of the reservoir is connected to a low-pressure pipe such as an evaporator through an on-off valve, and the upper part of the rectification separator is separated into gas and liquid. Connected to the evaporator, the liquid side outlet of the bottom of the gas-liquid separator is connected to the inlet side pipe of the evaporator, the inlet side pipe of the condenser is provided with a refrigerant ejector,
A heat pump device, wherein a gas side outlet at an upper portion of the gas-liquid separator and a suction port of the refrigerant ejector are connected by piping. 2. A non-azeotropic mixed refrigerant is enclosed, and a compressor, a four-way valve, a use side heat exchanger, a throttle device, and a heat source side heat exchanger are sequentially connected to form a main heat pump circuit, and a heating means is provided at a lower portion. A first check valve and a first decompressor provided in parallel with the upper portion of the rectification separator provided with a reservoir having a reservoir in the pipe between the expansion device and the utilization side heat exchanger. And the upper portion of the rectification separator is connected to a pipe between the heat source side heat exchanger and the expansion device via a first opening / closing valve, and the reservoir is connected to a second opening / closing valve. Is connected to the pipe between the heat source side heat exchanger and the expansion device, the gas-liquid separator is connected to the upper part of the rectification separator, and the liquid side outlet of the bottom of the gas-liquid separator is the heat source. A side heat exchanger and a pipe between the expansion device are connected, and a refrigerant ejector is provided between the compressor and the four-way valve, Heat pump apparatus characterized by a liquid separator top of the gas-side outlet connected with the suction port of the coolant ejector. 3. A main heat pump circuit is constructed by enclosing a non-azeotropic mixed refrigerant and connecting a compressor, a four-way valve, a utilization side heat exchanger, a throttle device, and a heat source side heat exchanger in this order to form a main heat pump circuit. A first check valve and a first check valve provided in parallel with the upper part of the rectification separator provided with a reservoir having heating means in the pipe between the expansion device and the utilization side heat exchanger. 1 through a pressure reducer, the upper part of the rectification separator is further connected to a pipe between the heat source side heat exchanger and the expansion device through a first opening / closing valve, and the reservoir is 2 Connected to a pipe between the heat source side heat exchanger and the expansion device via an on-off valve, connected a gas-liquid separator to the upper part of the rectification separator, and provided a liquid-side outlet at the bottom of the gas-liquid separator. Is connected to a pipe between the heat source side heat exchanger and the expansion device, and a refrigerant ejector is provided between the four-way valve and the use side heat exchanger. And a fourth check valve that bypasses the refrigerant ejector during the cooling operation while connecting the gas side outlet at the upper part of the gas-liquid separator and the suction port of the refrigerant ejector through a third opening / closing valve. A heat pump device characterized in that 4. The heat pump device according to claim 1, wherein the liquid side outlet at the bottom of the gas-liquid separator has a float valve structure.