JPH02263064A - Device for refrigeration cycle - Google Patents

Abstract

PURPOSE:To efficiently separate a specific refrigerant so as to improve the efficiency of the operation and achieve the operation at high temperatures by providing a first part of line wherein a specific refrigerant is adsorbed, a second part of line whereby refrigerant is returned to a refrigeration cycle line, a third part of line whereby the refrigerant is released from the adsorption, a directional control valve for shifting between the first and the third parts of line, and a means for storing the refrigerant released from the adsorption. CONSTITUTION:From a mixture of refrigerants in a gasified highly pressurized state fed in a flow to a gas feed inlet 12 of an adsorption tower 11, R-114 is preferentially adsorbed by activated alumina 15; the refrigerant consisting mainly of R-22, which passes through the activated alumina 15 without being adsorbed, is piped back by return pipes 22 to the low temperature side in a refrigeration-cycle line 1. After continuation of this adsorption process for a certain period of time, a command from a control unit 31 causes a directional control valve 16 to shift to the connection between the adsorption tower 11 and a storage tank 20. Then the activated alumina 15 is depressurized and the refrigerant consisting mainly of R-114, which has been under adsorption, is released from the activated alumina 15 and stored in a storage tank 20.

Description

Detailed Description of the Invention [Object 1] (Industrial Application Field) This invention provides a refrigeration cycle device in which a non-azeotropic mixed refrigerant, which is a mixture of a high boiling point refrigerant and a low, A11: point refrigerant, is enclosed. In particular, the present invention relates to a modification of a refrigerant separation system for varying the composition of a mixed refrigerant circulating within a refrigeration cycle.

(Prior Art) Air conditioners have been proposed that use heat obtained from a heat pump cycle to provide hot water in addition to space heating.

Incidentally, refrigeration cycle devices used in air conditioners have conventionally utilized a single-component refrigerant, for example, a fluorocarbon gas represented by R-22. However, single-component refrigerants are insufficient in terms of performance. In particular, there is a need for a system that can operate at high efficiency, emphasizing efficiency suitable for heating, and that can operate at a high temperature, emphasizing high temperature, when high temperatures are required, such as when heating hot water.

Therefore, in recent years, refrigeration cycles have been developed in which a mixed refrigerant made by mixing multiple types of refrigerants with different boiling points is sealed in the refrigeration cycle circuit, and the composition of the mixed refrigerant circulating within the refrigeration cycle can be varied according to the operational purpose. Devices are being developed.

This requires separating a certain type of refrigerant from the mixed refrigerant in order to vary the composition of the mixed refrigerant.

Therefore, as a refrigerant separation system for refrigeration cycle equipment, we are currently considering a typical method that uses distillation, in which the vapor of various refrigerants produced by heating a mixed refrigerant with a heating source is cooled and then liquefied again to separate the refrigerants. has been done.

(Problem to be solved by the invention) However, according to the method using distillation, high efficiency (efficiency)
In order to operate on compositions that operate at high temperatures, a distillation column with a certain amount of height is required. Therefore, in order to achieve high efficiency (capacity) and high-temperature operation, the refrigeration cycle device must be made larger and smaller. Moreover, a dedicated heating source must be installed by installing heating piping from the refrigeration cycle circuit or installing a new heater. In addition, energy was required to supply such a heating source, and the structure was not simple.

This invention was made in view of this situation, and its purpose is to miniaturize the device.

A refrigeration cycle device capable of performing high-efficiency operation or high-temperature operation by separating a specific refrigerant with excellent efficiency. an adsorbent that adsorbs a specific type of refrigerant; and a first adsorbent that is connected to the high pressure side of the refrigeration cycle circuit and that guides the mixed refrigerant on the high pressure side to the adsorbent and adsorbs a specific type of refrigerant.
a second flow path that is connected to the adsorbent and returns the refrigerant that passes through without being adsorbed to the refrigeration cycle circuit; and a second flow path that is connected to the suction body and depressurizes the adsorbent and desorbs the refrigerant from the adsorbent. a switching valve that alternately switches between the first flow path and the third flow path; and a storage means connected to the third flow path and storing the desorbed refrigerant. A refrigerant separation system is constructed by providing a refrigerant separation system.

The refrigeration cycle device according to the invention according to claim 2 also includes an adsorbent that adsorbs a high-boiling refrigerant among mixed refrigerants, and a purified gas outlet provided below the adsorbent through which purified gas flows out from the adsorbent. a first flow path connected to the gas-liquid separator of the refrigeration cycle circuit to guide the refrigerant to the adsorbent and adsorb high-boiling point refrigerant; a second flow path that returns to the cycle circuit; a third flow path that is connected to the purified gas outlet of the adsorbent and depressurizes the adsorbent and desorbs high-boiling refrigerant from the adsorbent; a switching valve that alternately switches between the flow path and the third flow path; and a storage means that is installed below the adsorbent and stores the high boiling point refrigerant that flows out of the third flow path. is provided to constitute a refrigerant separation system.

The refrigeration cycle device according to the invention according to claim 3 also includes an adsorbent that adsorbs a high boiling point refrigerant among the mixed refrigerant, and an adsorbent that is connected to a liquid outlet of a gas-liquid separator of a refrigeration cycle circuit and absorbs the liquid phase refrigerant. a first channel for adsorbing high-boiling point refrigerant into the body; a second channel connected to the adsorbent and returning the refrigerant passing through without being adsorbed to the refrigeration cycle circuit; a third channel for depressurizing the adsorbent and desorbing a high boiling point refrigerant from the adsorbent;
a switching valve that alternately switches the flow path, a heat radiation part is provided in the third flow path, and a heat receiving part connected to the heat radiation part is provided in the first flow path, and the first flow flows through one path. A refrigerant separation system is configured by providing a heat exchange means for supplying heat of vaporization to the refrigerant, and a storage means connected to the third flow path and storing the desorbed high-boiling refrigerant.

(Function) According to the refrigeration cycle device according to claim 1, the switching valve that switches alternately selects a specific type of refrigerant from the mixed refrigerant.
It is adsorbed to the adsorbent, and further desorbed from the adsorbent and stored in a storage means. Moreover, the refrigerant that passes through without being adsorbed by the adsorbent returns to the refrigeration cycle. This makes the distillation tower larger.

It is possible to separate the refrigerant required for compositional changes in high-efficiency operation and high-temperature operation without the need for a heating source, which poses the problem of requiring extra energy.

According to the refrigeration cycle device according to the second aspect, the refrigerant, which is mainly a high boiling point refrigerant in the mixed refrigerant, is adsorbed on the adsorbent by the switching valve which is switched alternately, and is further desorbed from the adsorbent and stored in the storage means. It will be stored in

Moreover, the refrigerant, mainly low boiling point refrigerant, which passes through without being adsorbed by the adsorbent, returns to the refrigeration cycle. As a result, similar to claim 1, it is possible to use the refrigerant necessary for high-efficiency operation and compositional changes in high-temperature operation without requiring a large-sized distillation tower or a heating source that requires extra energy. can be separated.

Moreover, during the separation process, the high boiling point refrigerant partially liquefies due to the increase in concentration, and there is a risk that this will stagnate during the separation process and not flow out to the storage means. Since the storage means is located below the refrigerant (both along the direction of gravity), even if the high boiling point refrigerant liquefies, the refrigerant can be recovered to the storage means without being stagnated on the way.

According to the refrigeration cycle device according to the third aspect, the refrigerant, which is mainly a high boiling point refrigerant in the mixed refrigerant, is adsorbed on the adsorbent by the switching valve which is switched alternately, and is further desorbed from the adsorbent and stored in the storage means. It is liquefied and stored. Moreover, the refrigerant, mainly low boiling point refrigerant, which passes through without being adsorbed by the adsorbent, returns to the refrigeration cycle.

Heat generated when the high-boiling refrigerant is liquefied and stored is supplied to the heat receiving part via the heat radiating part, thereby vaporizing the refrigerant flowing out from the gas-liquid separator.

As a result, the distillation tower becomes large in size as in claim 1.

It is possible to separate the refrigerant required for compositional changes in high-efficiency operation and high-temperature operation without the need for a heating source, which poses the problem of requiring extra energy. Moreover, the heat from the high-boiling refrigerant generated during liquefaction storage is directly supplied as heat to gasify the refrigerant coming out of the gas-liquid separator, suppressing heat loss while increasing success/failure pressure. It is possible to efficiently increase the separation efficiency.

(Embodiment) The present invention will be described below based on a first embodiment shown in FIGS. 1 to 3. Figure 1 shows a heat pump type refrigeration cycle device used for example in an air conditioner.
1 is a refrigeration cycle circuit. The refrigeration cycle circuit 1 is
For example, a hermetic compressor 2 has a four-way valve 3 for switching between air conditioning and heating. Indoor heat exchanger 4 (corresponding to a condenser), expansion valve 5 (corresponding to a pressure reducing device), gas-liquid separator 6. Expansion valve 7 (equivalent to pressure reducing device)
, an outdoor heat exchanger 8 (corresponding to an evaporator) are successively connected via refrigerant piping 9. In addition, the refrigeration cycle circuit 1 contains a mixed refrigerant, for example, "R22 (53 mo1%)".
” (refrigerant with small molecular diameter and low boiling point) and rR-114 (
47mo1%) (a refrigerant with a large molecular diameter and a high boiling point) is sealed.

On the other hand, 11 is an adsorption tower (corresponding to an adsorbent) constituting a refrigerant separation system. The adsorption tower 11 has a supply gas population 12 at the bottom.
A purified gas outlet 13 is also provided, and an exhaust gas outlet 14 is provided at the top. In addition, inside the adsorption tower 11,
As an adsorbent that preferentially adsorbs rR-114J of the mixed refrigerant, activated alumina 15, which has a large equilibrium adsorption property for R-114J, for example, has a main pore diameter of 100, is filled. Incidentally, FIG. 2 shows the equilibrium adsorption characteristics in comparison with rR-22J.

Further, the purified gas outlet 13 of the adsorption tower 11 is connected to a switching valve 16 configured as a three-way valve for switching between supply and storage. One mouth of the three-way valve 16 is connected to a mixed refrigerant supply pipe 17 connected to the liquid outlet 6a of the second gas-liquid separator 6.
(corresponding to the first flow path). Note that the reference numeral 18 denotes a supply amount adjusting valve, which is interposed in the mixed refrigerant supply pipe 17 and is constituted by, for example, a pressure reducing valve. The other mouth of the three-way valve 16 is connected to a storage tank 20 (storage tank 20) disposed below (in the gravity direction) the adsorption tower 11 via a purified refrigerant storage pipe 19 (corresponding to the third flow path). (equivalent to means) are connected. As a result, the switching valve 16 is
By switching the refrigerant on the high pressure side of the refrigeration cycle circuit 1 to the adsorption tower 11, rR-114J is adsorbed onto the activated alumina 15, and the switching valve 16 is switched to the "adsorption tower 110" side.
By switching to the "storage tank 20" side, rR-11,4J absorbed into the activated aluminum column 15 is desorbed from the reduced pressure and is made to flow into the storage tank 20.

Further, a heat exchanger 21 (corresponding to heat exchange means) for promoting vaporization and condensation is provided in the middle of the mixed refrigerant supply pipe]7 and the purified refrigerant supply pipe]9. The heat exchanger 21 includes a heat dissipation section 21a configured as a heat exchange section in the purified refrigerant storage pipe 19. Further, the mixed refrigerant supply pipe 17 is provided with a heat receiving part 21b having a similar configuration to the heat radiating part 21a and connected to the heat radiating part 21a, and the heat generated during the process of storing rR-114J is transferred to the gas-liquid separator 6. At the same time, the r
R-114J is cooled to promote condensation (liquefaction recovery).

Further, a return flow pipe 22 (corresponding to a second flow path) is connected to the exhaust gas outlet 14 of the adsorption tower 11.

The other end of the flow pipe 22 is connected to a refrigerant piping section on the low-pressure side of the refrigeration cycle circuit 1, for example, between the expansion valve 7 and the outdoor heat exchanger 8. This flow pipe 22 includes, in order from the adsorption tower 11 side, a purge tank 23, an electromagnetic on-off valve 24, and a purge tank 23. Return flow rate adjustment valve 2, which is configured with a pressure reducing valve, for example, and serves as a resistance to adjust the return amount.
5 are provided in order. Note that the tank 23 is, for example, a tank having a capacity of about 215 that of the adsorption tower 11. Further, in the flow pipe portion downstream of the flow m adjustment valve 25, there is a gas component return pipe 27 connected to the storage tank 20 for returning gas components in the tank, which is provided with a valve 26 in the reverse direction in the pipe line. It is connected. This gas component return pipe 27 returns the gas phase refrigerant in the storage tank 20 to the refrigeration cycle circuit 1 to increase the purity of the R-114J in the storage tank 20. A liquid-phase refrigerant outflow pipe 29 connected to the storage tank 20 and equipped with an electromagnetic shut-off valve 28 in the pipe is connected to the side distribution pipe, and the rR-114J stored in the storage tank 20 is It can be returned to the refrigeration cycle circuit 1. Note that 30 is an electromagnetic on-off valve for returning to the refrigeration cycle, which is provided at the most downstream side of the flow pipe 22.

On the other hand, 31 is a control section (consisting of a microcomputer and its peripheral circuits). An operating section 32 is connected to an input section of this control section 31 .

Further, the output section of the control section 31 is connected to the switching valve 16 and the electromagnetic on-off valve 24, and when an operation signal for changing the composition 1J is input from the operation section 32, the switching valve]6 is connected as shown in FIG.
at fixed time intervals (1:1 ratio) on the yIl pressure side (supply side; gas-liquid A111 vessel 6 side) and the reduced pressure side (storage side; storage tank 2).
0 side), and at the same time, in conjunction with the switching, the electromagnetic on-off valve 24 is opened when the pressure is increased and closed when the pressure is decreased. And with this valve control,
- A refrigerant separation process is formed in which adsorption and desorption of the specific type of refrigerant are alternately repeated. Of course, under the control of the control section 31, the supply amount adjustment valve 18 and the electromagnetic on-off valve 30 are operated to the "open" side during this "separation" step 1.

Note that the control unit 31 includes a hermetic compressor 2. Four-way valve 3. Devices such as an electromagnetic on-off valve 28 are also connected, and each device is controlled according to setting information input from the operating section 32.

However, arrow A in FIG. 1 indicates the direction of gravity (up and down).

Therefore, in such an air conditioner, when operating the operation section 32 to perform high temperature heating operation (operation with a high concentration of rR-114J), the supply amount adjustment valve 18 is operated according to the setting information input from the operation section 32. and electromagnetic on-off valve 30
is "closed" and the four-way valve 3 is switched to the heating side.

At the same time, the hermetic compressor 2 starts operating. As a result, the refrigerant discharged from the hermetic compressor 2 is transferred to the indoor heat exchanger 4. Expansion valve 5. Gas-liquid separator6. expansion valve 7,
It circulates through the outdoor heat exchanger 8 in order. In other words, a heating cycle is configured, and high-temperature operation is performed using a refrigerant with a high concentration or composition of rR-114J.

Then, when the operating unit 32 is operated in order to change from an operation that emphasizes temperature to an operation that emphasizes efficiency, the supply amount adjustment valve 18 and the electromagnetic on-off valve 30 are opened in response to a command from the control unit 31. . At the same time, the switching valve 16
The electromagnetic on-off valve 24 is alternately switched at regular intervals as shown in the timing chart of FIG. 3, separating rR-114J from the mixed refrigerant in the refrigeration cycle circuit 1'.

That is, to explain the separation process, when the switching valve 16 is switched to "the side that communicates the gas-liquid separator 6 and the adsorption tower 11", the "R" separated inside the gas-liquid separator 6 is
The liquid phase flows into the mixed refrigerant supply pipe 17. Then, when this refrigerant with concentrated low boiling point components passes through the mixed refrigerant supply pipe 17, it further passes through the heat receiving section 21.
When passing through b, external heat, rR-1, 14J described below
It evaporates by exchanging heat with the heat generated when it is stored. As a result, the refrigerant is gasified and the pressure increases considerably. Then, this gasified high pressure refrigerant is transferred to the adsorption tower 1.
1 is supplied to the supply gas population 12 (same as the purified gas outlet 13). As a result, rR-1 of the mixed refrigerant
14J is preferentially adsorbed onto activated alumina 15 one after another. In addition, "R" passes through activated alumina 15 without being adsorbed.
The refrigerant, which is mainly ``22'', returns to the low pressure side of the refrigeration cycle circuit 1 through the return flow pipe 22.

When this adsorption step has passed for a certain period of time, the control unit 31 commands the switching valve 16 to switch to "adsorption tower 1".
1 and the storage tank 20. Then, the activated alumina 15 is depressurized, and the refrigerant, mainly rR-114J, adsorbed in the previous adsorption step is desorbed from the activated alumina 15.

During this desorption, the pressure of the refrigerant ([R-22J concentration is high) stored in the tank 23 during the adsorption step flows back into the adsorption tower 11, increasing the partial pressure inside the adsorption tower 11. , the activated alumina 15 is regenerated to its initial state with high regeneration efficiency. As a result, adsorption separation that is highly dependent on the physical and chemical adsorption power of the adsorbent is performed.

Then, when this desorbed refrigerant passes through the purified refrigerant storage pipe 17 and the heat radiation part 21a, it exchanges heat with the outside air and is cooled from the heat radiation part 21a, and is liquefied. and,
This liquefied refrigerant is stored in the storage tank 20, and rR
The refrigerant whose main components are -1 and 14j is separated from the mixed refrigerant of the refrigeration cycle circuit 1. According to experiments, the storage tank 20 contains between 47 mo1% and 98 mo1% r.
[R-114J purified to ``] was stored.

Due to such separation, the composition of the mixed refrigerant circulating in the refrigeration cycle circuit 1 changes to a composition with a considerably high concentration of rR-22J. According to experiments, refrigeration cycle circuit 1
The composition of the mixed refrigerant circulating inside the
is r 86 [1Io1%”, rR-114J is r
14 mo1%”. Note that the discharge temperature of the hermetic compressor 2 was approximately 90° C. during high-temperature operation, but decreased to approximately 50° C. after 30 minutes due to a change in composition.

However, the refrigeration cycle switches from the previous high-temperature operation to high-efficiency operation that emphasizes efficiency.

In addition, when switching to the original high temperature operation, use the electromagnetic on-off valve 28.
30 to "open" to allow the stored refrigerant to flow into the refrigeration cycle circuit 1.

Thus, it becomes large. without the need for a heating source or distillation tower, which would require extra energy and other problems.
High efficiency operation and high temperature operation are possible.

Moreover, since rR'-114J has a high boiling point, a part of the purified gas in the adsorption tower 11 may partially liquefy due to an increase in concentration during adsorption separation. Since the outlet 13 is located at the bottom and the storage tank 20 is provided below the adsorption tower 13, the liquefied refrigerant can be recovered without stagnation in the interior of the tower or even in the pipes. can do.

Moreover, the heat exchanger 21 is used to supply the heat from rR-114J generated during liquefaction storage as heat for gasifying the refrigerant flowing out from the gas-liquid separator 6, and at the same time, the heat radiating section 21a is cooled by vaporization. rR- stored in liquefaction at
The structure that takes heat from 114J forms a thermal cycle between them, so the refrigerant can be vaporized and condensed without heat loss, resulting in high separation efficiency (high adsorption pressure).

It is possible to improve both storage efficiency. Moreover, even if a large amount of heat is required to vaporize a liquid phase refrigerant in which low boiling point components are concentrated, the amount of heat required for vaporization is small because the heat of condensation is directly utilized. According to experiments, the heater heat required to vaporize a liquid-phase refrigerant with concentrated low boiling point components was approximately IKW, but sufficient adsorption pressure can be obtained with approximately 2/3 of the heat. I was able to do that.

Further, FIG. 4 shows a second embodiment of the present invention.

In the second embodiment, the present invention is applied to a refrigeration cycle device that employs highly adsorption separation that relies on the condensation phenomenon into adsorption 4A (macropores) caused by the difference in boiling points of refrigerants.

Specifically, the air conditioner shown in FIG. 4 has, in place of the purge tank 23 and electromagnetic on-off valve 24 of the first embodiment,
A check valve 40 is provided in the return flow pipe 22. Then, without purging as in the first embodiment, adsorption and regeneration are repeated by condensation and evaporation due to pressure difference, and rR-114
J is stored separately.

Further, FIG. 5 shows a third embodiment of the present invention.

The third embodiment shows a two-unit refrigeration cycle device instead of some adsorption towers 11 as in the first and second embodiments.

That is, to explain the air conditioner shown in FIG. 5, each of the pair (two) adsorption towers 43, 43 has a purified gas outlet 41 at the bottom that also serves as the supply gas population 40,
It has an exhaust gas outlet 42 at the top. These adsorption towers 43, 43 are arranged in parallel in the horizontal direction. Incidentally, both adsorption towers 43 and 43 are filled with activated alumina 44 having the main pore diameter, as in the first and second embodiments.

In addition, at one purified gas outlet 41 of the adsorption tower 43.43,
The mixed refrigerant supply pipe 17 and the purified refrigerant storage pipe 19 are connected via a switching valve 45 configured as a four-way valve. This connects the storage tanks 20 installed below the adsorption towers 43 and 43, as in the previous embodiment. In addition, a return flow pipe 2 is provided at the exhaust gas outlet 42 of each absorption tower 4B, 43.
Connected to 2 and 11 columns. A check valve 46 is provided in each of the parallel pipe portions 43a, 43a connected to the υ gas outlet 42. Moreover, a pressure reducing valve 4 serving as a purge resistance is provided between the parallel pipe portions 43a and 43a.
7 is connected to adsorption tower 4 to increase the amount of desorption and regeneration.
Part of the purified gas can be supplied into the 3.43. The return flow pipe 22 is provided with a return adjustment valve 25 serving as a flow rate adjustment resistance on the first flow side, and an electromagnetic on-off valve 30 on the downstream side.

When a signal from the operating unit 32 indicating that composition is possible is received, the switching valve 45 is switched at regular intervals to alternately connect the adsorption towers 43 and 43 to the gas-liquid separator 6 side and the storage tank 20 side. It looks like this.

That is, in the third embodiment, when one adsorption tower 43 is adsorbing, the other adsorption tower 43 is desorbing, and the refrigerant is separated in this continuous process. Of course, in the third embodiment, in addition to the effect of being able to perform high-efficiency operation and high-temperature operation without the need for a heating source or a distillation column, similar to the first embodiment, the internal part of the column,
Needless to say, the liquefied refrigerant can be recovered without stagnation in piping sections, and further, the refrigerant can be vaporized and condensed without heat loss.

However, in the second and third embodiments described above, the same components as in FIG. 1 are given the same reference numerals and their explanations are omitted.

In addition, in the two consecutive examples, activated alumina and zeolite were used as the stone absorber for separation, but the present invention is not limited thereto, and molecular sieve carbon, activated carbon fiber, and activated carbon may also be used.

An adsorption ash such as silica gel may be used, and the suction ash is not particularly limited. According to experiments, 50
Activated alumina, activated carbon, with main pore size of ~200
Silica gel and the like were good because they preferentially adsorbed rR-1,14J.

Furthermore, in the above-described embodiments, the mixed refrigerant composition and target discharge temperature were explained using numbers, but these are not particularly limited either. Of course, the storage means is not particularly limited to the examples.

[Effects of the Invention] As described above, according to the inventions recited in claims 1 to 3, a specific type of refrigerant can be separated using the adsorbent jE1 body.

Therefore, high efficiency operation is possible without the need for a heating source or distillation tower.
High-temperature operation can be achieved, and the refrigeration cycle device can be made smaller and its efficiency can be improved.

Moreover, according to the invention as set forth in claim 2, in addition to the above-mentioned effects, the purified gas outlet of the adsorbent is located at the bottom, and the storage means is further provided below the adsorbent, so even if the high boiling point refrigerant is liquefied, , the refrigerant can be recovered to the storage means without being stagnated on the way.

Further, according to the invention as set forth in claim 3, by installing the heat exchange means, heat from the high boiling point refrigerant generated during liquefaction storage is directly used to gasify the liquid phase refrigerant from the gas-liquid separator. Since it is supplied as heat, it has the effect of increasing the suction j1 pressure while suppressing heat loss, and the separation efficiency can be efficiently increased.

[Brief explanation of drawings]

1 to 3 show a first embodiment of this invention,
Figure 1 is a schematic configuration diagram showing a refrigeration cycle device to which the present invention is applied, together with a one-piece refrigerant separation system that is highly dependent on the physical and chemical adsorption power of the adsorbent, and Figure 2 is an adsorption tower for the refrigerant separation system. Fig. 3 is a timing chart showing the timing of two valves for adsorbing and separating refrigerant, and Fig. 4 is a diagram showing the adsorption characteristics of the adsorbent (activated alumina) of this invention. Figure 4 shows a schematic configuration diagram of a high-tower-type refrigerant separation system that relies on the condensation phenomenon in an adsorption tank caused by the difference in refrigerant boiling points. It is a schematic block diagram which shows the refrigeration cycle apparatus of 3rd Example as a two-unit type refrigerant separation system. 1... Refrigeration cycle circuit, 2... Hermetic compressor (compressor), 4... Indoor heat exchanger (condenser), 5.7.
... Expansion valve (pressure reducing device), 6... Gas-liquid separator, 8...
・Outdoor heat exchanger (evaporator), 9... Refrigerant piping, 11
... Adsorption tower (suction (1 body), 12... Supply gas population, 13... Purified gas outlet, 14... Exhaust gas outlet,
16...Switching valve, 17...Mixed refrigerant supply pipe (first flow path), 19...Refined refrigerant supply pipe (third flow path), 2
0... Storage tank (storage means), 21... Heat exchanger (heat exchange means), 2], a... Heat radiation part, 21b...
Heat receiving part, 22... return flow pipe (second flow path).

Claims (1)

[Claims] 1. Connecting a condenser, a pressure reducing device, and an evaporator to the compressor in order,
and a refrigeration cycle circuit sealed with a non-azeotropic mixed refrigerant that is a mixture of a high boiling point refrigerant and a low boiling point refrigerant, an adsorbent that adsorbs a specific type of refrigerant among the mixed refrigerant, and a high pressure side of the refrigeration cycle circuit. a first flow path connected to the adsorbent for guiding the mixed refrigerant on the high pressure side to the adsorbent and adsorbing a specific type of refrigerant; and a first flow path connected to the adsorbent and returning the refrigerant passing through without being adsorbed to the refrigeration cycle circuit. a second flow path, a third flow path that is connected to the adsorbent and depressurizes the adsorbent and desorbs the refrigerant from the adsorption body; the first flow path and the third flow path are alternately switched; A refrigeration cycle device comprising: a switching valve; and storage means connected to the third flow path and storing the desorbed refrigerant. 2. A refrigeration cycle circuit in which a condenser, a pressure reduction device, a gas-liquid separator, and an evaporator are connected in order to a compressor, and a non-azeotropic mixed refrigerant mixture of a high-boiling point refrigerant and a low-boiling point refrigerant is enclosed; an adsorbent that adsorbs a high boiling point refrigerant among the mixed refrigerant;
A purified gas outlet provided below the adsorbent for allowing the purified gas to flow out from the adsorbent; and a first channel connected to the gas-liquid separator to guide the refrigerant to the adsorbent and adsorb high-boiling point refrigerant. a second flow path connected to the adsorbent and returning the refrigerant passing through without being adsorbed to the refrigeration cycle circuit; and a second flow path connected to the purified gas outlet of the adsorbent to depressurize the adsorbent and remove the high boiling point from the adsorbent. a third flow path for desorbing the seed refrigerant;
a switching valve that alternately switches between the flow path and the third flow path, and a storage that is installed below the adsorbent and stores the high boiling point refrigerant that flows out of the third flow path. A refrigeration cycle device characterized by comprising means. 3. A refrigeration cycle circuit in which a condenser, a pressure reduction device, a gas-liquid separator, and an evaporator are connected in order to a compressor, and a non-azeotropic mixed refrigerant mixture of a high-boiling point refrigerant and a low-boiling point refrigerant is enclosed; an adsorbent that adsorbs a high boiling point refrigerant among the mixed refrigerant;
a first flow path connected to the liquid outlet of the gas-liquid separator to guide the liquid phase refrigerant to the adsorbent and adsorb high-boiling point refrigerant; a second flow path that returns to the refrigeration cycle circuit; a third flow path that is connected to the adsorbent and depressurizes the adsorbent and desorbs high-boiling refrigerant from the adsorbent; the first flow path and the a switching valve that alternately switches the third flow path; a heat radiating section is provided in the third flow path; and a heat receiving section connected to the heat radiating section is provided in the first flow path; A refrigeration cycle device comprising: heat exchange means for supplying heat of vaporization to the flowing refrigerant; and storage means connected to the third flow path and storing the desorbed high-boiling point refrigerant.