JP3454644B2 - Combined refrigeration system - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a freezing showcase, a refrigerating showcase, a prefabricated freezer / refrigerator, and
The present invention relates to a combined refrigeration system that efficiently supplies cold heat or the like to a plurality of loads in different temperature zones such as an air conditioning indoor unit.

[0002]

2. Description of the Related Art For example, a convenience store or the like often employs a total of two refrigerators, one for refrigerating and one for refrigerating. In such a case, a refrigerator may be provided for each load for refrigeration and refrigeration, and cold heat may be separately supplied to each load. Further, there is a case where cold heat is supplied to each load from a unit in which the system of the high-voltage section is commonly used for freezing and refrigeration and the low-voltage section is separated.

FIG. 3 is a block diagram of the combined refrigeration system in the latter case.

A refrigerating side compressor 2, a refrigerating side compressor 3 and a condenser 4 are arranged in the conditioning unit 1, and the refrigerating side compressor 2 and the refrigerating side compressor 3 have a common outlet side. A high-pressure gas pipe 5 is connected to the condenser 4, and a high-pressure liquid pipe 6 on the outlet side of the condenser 4 is connected to a branch pipe 7 and a branch pipe 8 which are branched for refrigeration and for freezing.

The branch pipe 7 is provided with an electromagnetic valve 9 and an expansion valve 10 and is connected to a low pressure liquid pipe 11, and the low pressure liquid pipe 11 is connected to an inlet side of an evaporator 13 arranged in a refrigerating showcase 12. The low pressure gas pipe 14 connected to the outlet side of the evaporator 13 is connected to the refrigeration side compressor 3.

Similarly, the branch pipe 8 is provided with an electromagnetic valve 15 and an expansion valve 16 and is connected to the low-pressure liquid pipe 17.
7 is connected to the inlet side of an evaporator 19 arranged in the freezer showcase 18, while the low pressure gas pipe 20 connected to the outlet side of the evaporator 19 is connected to the freezer side compressor 2.

According to this structure, a high-pressure and high-temperature refrigerant gas is sent from the common high-pressure gas pipe 5 to one condenser 4, and a plurality of temperatures are provided by the branch pipe 7 and the branch pipe 8 branched from the high-pressure liquid pipe 6. Cold heat can be supplied to the refrigerating showcase 12 and the freezing showcase 18, which are load units having different bands.

[0008]

However, the combined refrigerating apparatus shown in FIG. 3 has a problem that the refrigerating side efficiency is low.

That is, in FIG. 3, the refrigeration side compressor 2
And the high pressure gas pipe 5 on the outlet side of the refrigeration side compressor 3 are discharged at high temperature and high pressure, and the low pressure liquid pipe 11 and the low pressure gas pipe 14 on the refrigeration side are discharged.
The refrigerant also has a relatively high pressure and the inlet side of the refrigeration side compressor 3 also has a high pressure, so that the refrigeration side compressor 3 can be efficiently operated.

On the other hand, on the freezing side, the freezing showcase 18
In order to generate a lower freezing heat than the refrigerating showcase 12, it is necessary to narrow down the expansion valve 16 and make the low-pressure liquid pipe 17 and the low-pressure gas pipe 20 relatively low in pressure. It is necessary to reduce the pressure. However, since the high-pressure section on the refrigeration / refrigeration side is common, the high-pressure pressure on the refrigeration side is as high as on the refrigeration side, so the compression ratio of the refrigeration side compressor is high and the efficiency of the refrigeration side compressor is high. Will decrease. Further, in order to maintain the refrigerating load temperature of the refrigerating showcase 18, the operating time of the refrigerating side compressor 2 is longer than that of the refrigerating side compressor 3, which is a factor of a decrease in overall efficiency.

Therefore, it is an object of the present invention to provide a combined refrigerating apparatus which improves the overall efficiency by harmonizing the respective efficiencies on the freezing side and the refrigerating side.

[0012]

According to a first aspect of the invention, the discharge sides of the refrigeration side compressor and the refrigeration side compressor are provided with a common portion in which a common high pressure gas pipe, a common condenser and a common high pressure liquid pipe are sequentially connected. Between the low pressure gas pipe on the suction side of the refrigeration side compressor, heat can be exchanged between the refrigerant vaporized by the evaporator that takes in the liquid refrigerant of the common high pressure liquid pipe of the common section and the brine liquid supplied to the refrigeration load unit. A refrigeration side evaporator having a first heat exchange means, a second heat exchange means capable of exchanging heat with the evaporative refrigerant and the liquid refrigerant of the common high-pressure liquid pipe to bring the liquid refrigerant into a supercooled state is provided. While forming the refrigeration cycle of, between the common portion and the suction side low pressure gas pipe of the refrigeration side compressor,
A refrigerating side evaporator having heat exchange means capable of exchanging heat with the evaporating refrigerant by the evaporator that takes in the liquid refrigerant in the supercooled state from the refrigerating side evaporator and the brine liquid that is circulated to the refrigerating load unit is provided. Shape the refrigeration cycle on the freezing side
The evaporator on the refrigerating side and the evaporator on the freezing side in the same unit.
It is to be placed inside .

According to a second aspect of the present invention, the discharge side of the refrigeration side compressor, the refrigeration side compressor, and the air conditioning side compressor is connected in sequence to a common high pressure gas pipe, a common condenser, and a common high pressure liquid pipe, and the air conditioner. A first refrigerant enabling heat exchange between a refrigerant evaporated by an evaporator that takes in the liquid refrigerant of the high-pressure liquid pipe of the common section and a brine liquid supplied to an air conditioning load unit between the low-pressure gas pipe on the suction side of the side compressor. An air conditioning side evaporator having a second heat exchange means for exchanging heat with the heat exchanging means, the evaporative refrigerant, and the liquid refrigerant of the high-pressure liquid pipe to bring the liquid refrigerant into a supercooled state is formed to form a refrigeration cycle on the air conditioning side. In addition, the evaporator that takes in the liquid refrigerant supercooled by the second heat exchange means of the air conditioning side evaporator is provided between the common portion and the low pressure gas pipe on the suction side of the refrigeration side compressor. Bra that supplies evaporated refrigerant and refrigeration load unit Refrigeration having a first heat exchanging means capable of exchanging heat with the liquid and a second heat exchanging means capable of exchanging heat with the liquid refrigerant in a supercooled state with the evaporative refrigerant and further making the liquid refrigerant in a supercooled state. A side evaporator is provided to form a refrigeration cycle on the refrigeration side, and a liquid refrigerant that is brought into a supercooled state by the refrigeration side evaporator between the common part and the low pressure gas pipe on the suction side of the refrigeration side compressor. To form a refrigerating cycle on the refrigerating side by providing a refrigerating side evaporator having a heat exchanging means capable of exchanging heat with an evaporated refrigerant by an evaporator for taking in and a brine liquid which is circulated and supplied to the refrigerating load unit, and the refrigerating side compressor, The above
From the high pressure gas pipe common to the refrigeration side compressor and the air conditioning side compressor
Use the high pressure and high temperature refrigerant discharged to heat the air conditioning load.
A means for circulating and supplying heat is provided.

According to a third aspect of the present invention, the refrigerating side compressor and the refrigerating side are provided.
The compressor and the air conditioning side have a common discharge side and a high-pressure gas pipe.
The common part in which the condenser and the common high-pressure liquid pipe are connected in sequence and the air conditioning
Between the low-pressure gas pipe on the suction side of the side compressor,
Evaporative refrigerant by an evaporator that takes in the liquid refrigerant of the high-pressure liquid pipe
And can exchange heat with the brine solution supplied to the air conditioning load unit
Of the first heat exchange means, the evaporated refrigerant, and the high-pressure liquid pipe
It makes heat exchange with the liquid refrigerant and makes the liquid refrigerant supercooled.
2 Provide an air conditioning side evaporator with heat exchange means to cool the air conditioning side.
A freezing cycle is formed, and the common part and the refrigeration side are formed.
Between the low pressure gas pipe on the suction side of the compressor, the evaporation on the air conditioning side
Liquid supercooled by the second heat exchange means of the vessel
Refrigerant load unit and refrigerating load unit
Heat exchange that enables heat exchange with the brine solution supplied to
Means and heat exchange between the vaporized refrigerant and the supercooled liquid refrigerant.
Second heat that can be converted to liquid refrigerant in a supercooled state
A refrigeration side evaporator having an exchange means is provided to provide refrigeration side refrigeration
Intake of the common part and the refrigeration side compressor forming an icicle
Between the low-pressure gas pipe on the side of the
Refrigerant evaporated by an evaporator that takes in the liquid refrigerant that has been placed in a rejected state
And heat exchange with brine liquid that is circulated to the refrigeration load unit
A freezing side evaporator having a heat exchange means that enables cooling is provided.
Forming a refrigeration cycle on the freezing side, the refrigerating side, the freezing side
Each of these evaporators including the air conditioning side is in the same unit.
It is to be placed inside.

According to a fourth aspect of the invention, the refrigerating side compressor and the refrigerating side are provided.
The compressor and the air conditioning side have a common discharge side and a high-pressure gas pipe.
The common part in which the condenser and the common high-pressure liquid pipe are connected in sequence and the air conditioning
Between the low-pressure gas pipe on the suction side of the side compressor,
Evaporative refrigerant by an evaporator that takes in the liquid refrigerant of the high-pressure liquid pipe
And can exchange heat with the brine solution supplied to the air conditioning load unit
Of the first heat exchange means, the evaporated refrigerant, and the high-pressure liquid pipe
It makes heat exchange with the liquid refrigerant and makes the liquid refrigerant supercooled.
2 Provide an air conditioning side evaporator with heat exchange means to cool the air conditioning side.
A freezing cycle is formed, and the common part and the refrigeration side are formed.
Between the low pressure gas pipe on the suction side of the compressor, the evaporation on the air conditioning side
Liquid supercooled by the second heat exchange means of the vessel
Refrigerant load unit and refrigerating load unit
Heat exchange that enables heat exchange with the brine solution supplied to
Means and heat exchange between the vaporized refrigerant and the supercooled liquid refrigerant.
Second heat that can be converted to liquid refrigerant in a supercooled state
A refrigeration side evaporator having an exchange means is provided to provide refrigeration side refrigeration
Intake of the common part and the refrigeration side compressor forming an icicle
Between the low-pressure gas pipe on the side of the
Refrigerant evaporated by an evaporator that takes in the liquid refrigerant that has been placed in a rejected state
And heat exchange with brine liquid that is circulated to the refrigeration load unit
A freezing side evaporator having a heat exchange means that enables cooling is provided.
A freezing side refrigeration cycle is formed, and the freezing side compressor, the
From the high pressure gas pipe common to the refrigeration side compressor and the air conditioning side compressor
Use the high pressure and high temperature refrigerant discharged to heat the air conditioning load.
A means for circulating and supplying heat is provided, and the refrigerating side and the freezing side are provided.
Including each of these evaporators in the same unit
It is to be placed.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a composite refrigeration system showing a first embodiment of the present invention. In FIG. 1, the same reference numerals as those in FIG. 3 described in the prior art indicate the same or corresponding portions. In the first embodiment, the refrigeration side evaporator 21 is provided on the refrigeration side and the refrigeration side is provided on the freezing side in the conditioning unit 1A. A side evaporator 22 is provided.

The refrigerating side evaporator 21 has a low pressure liquid pipe 1 on the inlet side.
1, the first heat exchange means 23 for exchanging heat with the evaporator 13 to cool the brine as the second refrigerant, and the inlet side of the primary line 24a is connected to the outlet side of the evaporator 13. The outlet side is connected to the low-pressure gas pipe 14, the inlet side of the secondary line 24b corresponding to the primary line is connected to the branch pipe 8 which is a low-pressure liquid pipe, and the outlet side of the secondary line 24b is the freezing-side low-pressure liquid pipe. The second heat exchange means 2 is composed of a second heat exchange means 24 connected to a certain branch pipe 8a.
4, the liquid refrigerant flowing in the freezing side branch pipe 8 is supercooled.

The first heat exchange means 23 of the refrigerating side evaporator 21 is connected to a refrigerating load unit 27 in the refrigerating showcase 12 by a refrigerant pipe 25, and a brine 28 is circulated by a pump 28 provided in the refrigerant pipe 25. The refrigerating heat is supplied to the refrigerating load unit 27.

On the other hand, the freezing side evaporator 22 is an evaporator 19 connected to the low pressure liquid pipe 17 on the inlet side and connected to the low pressure gas pipe 20 on the outlet side, and exchanges heat with the evaporator 19 to serve as a second refrigerant. And a heat exchanger 29 for cooling the brine,
The heat exchanger 29 is connected to the refrigeration load unit 31 in the refrigeration showcase 18 by a refrigerant pipe 30 to connect the refrigerant pipe 3
The pump 32 provided at 0 circulates the brine solution to supply refrigeration heat to the refrigeration load unit 31.

With this structure, the second heat exchange means 24 of the refrigerating side evaporator 21 exchanges heat with the liquid refrigerant before returning to the low pressure gas pipe 14 on the refrigerating side and the liquid refrigerant on the freezing side from the branch pipe 8 to be frozen. The liquid refrigerant on the side is supercooled and reaches the expansion valve 16 via the solenoid valve 15.

In the expansion valve 16, the opening is increased / decreased to maintain a constant degree of superheat, the refrigerant is supplied to the evaporator 19, the liquid medium is evaporated, the brine in the heat exchanger 29 is cooled, and the low pressure gas pipe is used. Returning to the refrigeration side compressor 2 via 20. In this case, since the supercooled low-temperature liquid refrigerant is supplied to the evaporator 19, the operating time of the refrigeration side compressor 2 is shortened, the load on the refrigeration side compressor 2 is reduced, and the refrigeration on the freezing side is reduced. Capacity will be improved and overall efficiency including the refrigeration side will be improved. Further, since the refrigerating side evaporator 21 and the freezing side evaporator 22 are housed in the same unit, the branch pipe 8a through which the supercooled refrigerant liquid flows.
Is short and minimizes heat leaks.

FIG. 2 is a block diagram of a composite refrigeration system showing a second embodiment of the present invention.

In FIG. 2, the same reference numerals as those in FIG. 1 indicate the same or corresponding portions, and in the second embodiment, it can be connected to the air conditioning indoor unit 33 as a load unit, and mainly in the conditioning unit 1B. An air conditioning compressor 34 and an air conditioning side evaporator 35 are additionally provided.

The air conditioning indoor unit 33 is provided with a cooling load unit 36 and a heating load unit 37. During heating operation, the solenoid valve 39 provided in the heating pipe 38 is opened to open the high pressure liquid pipe 6. The installed solenoid valve 40 is closed and the air conditioning compressor 34
Is stopped, and the high temperature and high pressure gas on the discharge side of the refrigeration side compressor 2 and the refrigeration side compressor 3 is supplied from the flow control three-way valve 41 to the heating pipe 3
8 and take waste heat to the load unit 37 for heating,
The returned liquid refrigerant is used to supercool the refrigeration side and the freezing side, which will be described later. In addition, when both the refrigeration side compressor 2 and the refrigeration side compressor 3 are stopped during the heating operation, or when the heat quantity is insufficient due to the heating load only with the refrigeration side and refrigeration side waste heat, the air conditioning compressor 34 is operated. To do.

The air conditioning side evaporator 35 has the same structure as the refrigeration side evaporator 21 described in the first embodiment, and the air conditioning side evaporator 35 is connected to a low pressure liquid pipe 43 having an expansion valve 42 on the inlet side. The evaporator 44 that performs heat exchange with the evaporator 44
First heat exchange means 45 for cooling the brine liquid as a refrigerant
The inlet side of the primary line 46a is connected to the outlet side of the evaporator 44, the outlet side of the primary line 46a is connected to the low pressure gas pipe 53, the inlet side of the secondary line 46b is connected to the high pressure liquid pipe 6, and the secondary line 46b is connected. Series side for supercooling on the outlet side of
And a second heat exchange means 46 connected to
The liquid refrigerant flowing through the branch pipes 7 and 8 on the refrigeration side is sequentially supercooled by the heat exchange means 46.

Further, the first heat exchange means 45 of the air conditioning side evaporator 35 is connected to the cooling load unit 36 in the air conditioning indoor unit 33 by the refrigerant pipe 48, and the brine liquid is supplied by the pump 49 provided in the refrigerant pipe 25. It is circulated to supply cold heat to the load unit 36. In addition, 50 and 51 have shown the solenoid valve, respectively.

With this configuration, the secondary line 46b of the second heat exchange means 46 of the air conditioning side evaporator 35 and the secondary line 24b of the second heat exchange means 24 of the refrigeration side evaporator 21 are connected in series for supercooling. The refrigerant 47 is connected by a pipe 47, and the supercooled liquid refrigerant is supplied to the freezing side evaporator 22 while the air conditioning compressor 34 and the refrigeration side compressor 3 are in operation. As a result, the load on the refrigeration side is reduced and the refrigeration side compressor 2 can be operated efficiently. It should be noted that when both the air conditioning compressor 34 and the refrigeration side compressor 3 are stopped, the condensing load is reduced, so there is no need for supercooling.

As described above, according to the second embodiment, since the liquid cooling to the freezing side is supercooled by using the freezing heat on the air conditioning side and the refrigerating side, the low temperature cold heat corresponding to the load on the freezing side is applied to the freezing side. Can be supplied, the refrigerating capacity is improved, the load on the refrigerating side compressor 2 is reduced, the efficiency of the refrigerating side compressor 2 is increased, and the overall efficiency is improved.

[0030]

As described above, according to the invention of claim 1, the refrigerating side evaporator heat-exchanges the evaporating refrigerant with the liquid refrigerant from the common high-pressure liquid pipe to bring the liquid refrigerant into a supercooled state. Since the evaporative refrigerant by the supercooled liquid refrigerant and the brine liquid supplied to the refrigeration load unit are cooled by exchanging heat, sufficient cold heat can be supplied to the demand of the refrigeration load unit,
Reduce the load of the refrigeration side is achieved, to improve the overall efficiency efficiency of the refrigeration side is increased including refrigerating side and the freezing side
In addition, shorten the piping for supercooling between each evaporator to reduce heat loss.
Loss can be reduced.

According to the second aspect of the present invention, the evaporator on the air conditioning side exchanges heat with the evaporated refrigerant and the liquid refrigerant from the common high-pressure liquid pipe to supply the liquid refrigerant to the refrigeration side evaporator in a supercooled state. Since the liquid refrigerant and the evaporated refrigerant in the cooled state are heat-exchanged to supply the liquid refrigerant to the freezing side evaporator in the further supercooled state, it is possible to supply sufficient cold heat to the demand of the refrigeration load unit. Therefore, the load on the freezing side can be reduced, the efficiency on the freezing side can be improved, and the overall efficiency including the refrigerating side and the freezing side can be improved according to the load condition in the temperature zone. Shi
Load of refrigeration load unit and refrigeration load unit
Depending on the condition, excess heat can be used for heating,
Effective use of energy is achieved and efficiency is further improved.

According to the invention of claim 3, in the evaporator on the air conditioning side
Therefore, heat is exchanged between the evaporating refrigerant and the liquid refrigerant from the common high-pressure liquid pipe.
When the liquid refrigerant is supercooled and supplied to the refrigeration side evaporator,
Together, heat the supercooled liquid refrigerant and evaporated refrigerant.
Refrigeration side evaporator by replacing and refrigerating liquid refrigerant further
Supply to the refrigeration load unit
Can be supplied. Therefore, the load on the freezing side is reduced,
Efficiency on the freezing side is increased, and depending on the load conditions in the temperature zone, refrigeration side
And the overall efficiency including the freezing side can be improved.
Moreover, the piping for supercooling between each evaporator is shortened to reduce heat loss.
Can also be reduced.

According to the invention of claim 4, in addition to the effect of the invention of claim 3, a refrigerating load unit and
Excess heat for heating depending on the load condition of the refrigeration load unit
It is possible to use energy effectively
The rate is further improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a combined-type refrigerating apparatus showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a combined refrigeration system showing a second embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional combined refrigeration system.

[Explanation of symbols]

1 conditioning unit 2 Refrigeration side compressor 3 Refrigeration side compressor 4 condenser 5 high-pressure gas pipe 6 High-pressure liquid pipe 7,8 Branch pipe 12 refrigerated showcase 13 Evaporator 14 Low pressure gas pipe 18 Frozen showcase 20 Low pressure gas pipe 21 Refrigerator side evaporator 22 Freezing side evaporator 23 First heat exchange means 24 Second heat exchange means 33 Air-conditioning indoor unit 34 Air-conditioning compressor 35 Air-conditioning side evaporator 41 Flow control three-way valve 47 series piping

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F25D 11/00 101 F25D 17/02 303

Claims (4)

(57) [Claims] 1. A low pressure gas on a suction side of the refrigeration side compressor and a common part in which a common high pressure gas pipe, a common condenser and a common high pressure liquid pipe are sequentially connected to the discharge side of the refrigeration side compressor and the refrigeration side compressor. A first heat exchange means capable of exchanging heat with the evaporative refrigerant by an evaporator that takes in the liquid refrigerant of the common high-pressure liquid pipe of the common portion between the pipe and the brine liquid supplied to the refrigeration load unit, and the evaporative refrigerant. A refrigeration side evaporator having a second heat exchange means capable of exchanging heat with the liquid refrigerant of the common high-pressure liquid pipe to bring the liquid refrigerant into a supercooled state to form a refrigeration cycle on the refrigeration side, and the common part And a low pressure gas pipe on the suction side of the refrigeration side compressor between the refrigeration side evaporator, the refrigeration side evaporator takes in the subcooled liquid refrigerant, and the brine refrigerant is circulated and supplied to the refrigeration load unit. Heat exchange means that enables heat exchange with A freezing side evaporator is provided to form a freezing side refrigeration cycle, and each of the refrigeration side and the freezing side is provided.
A combined refrigeration system characterized in that an evaporator is arranged in the same unit . 2. A common part in which a common high-pressure gas pipe, a common condenser, and a common high-pressure liquid pipe are sequentially connected to the discharge side of the refrigeration side compressor, the refrigeration side compressor, and the air conditioning side compressor, and the suction of the air conditioning side compressor. A first heat exchange means capable of exchanging heat between the refrigerant vaporized by the evaporator for taking in the liquid refrigerant of the high pressure liquid pipe of the common portion and the brine liquid supplied to the air conditioning load unit, and the low pressure gas pipe on the side; An evaporator on the air conditioning side having a second heat exchange means for exchanging heat between the evaporated refrigerant and the liquid refrigerant of the high-pressure liquid pipe to bring the liquid refrigerant into a supercooled state is formed to form a refrigeration cycle on the air conditioning side, and the common Refrigerant and refrigeration load by the evaporator that takes in the liquid refrigerant that has been supercooled by the second heat exchange means of the air conditioning side evaporator between the cooling section and the low pressure gas pipe on the suction side of the refrigeration side compressor. Can exchange heat with the brine solution supplied to the unit And a refrigerating side evaporator having a second heat exchange means capable of exchanging heat with the first heat exchange means and the evaporative refrigerant and the liquid refrigerant in a supercooled state Forming a refrigeration cycle on the refrigeration side,
Between the common part and the low-pressure gas pipe on the suction side of the refrigeration side compressor, the refrigerating side evaporator circulates and supplies the liquid refrigerant that has been supercooled by the refrigerating side evaporator to the refrigerating load unit and the refrigerating load unit. A freezing side evaporator having a heat exchange means capable of exchanging heat with the brine is provided to form a freezing side refrigeration cycle, and the freezing side compressor, the refrigeration side compressor, and
The high pressure high pressure discharged from the common high pressure gas pipe of the compressor on the air conditioning side.
Warm heat is circulated and supplied to the air conditioning load using a warm refrigerant.
Composite refrigeration apparatus characterized by providing means. 3. A refrigeration side compressor, a refrigeration side compressor, and an air conditioning side pressure.
Common high-pressure gas pipe, common condenser and common high-pressure on discharge side of compressor
A common part where liquid pipes are sequentially connected and the suction side of the air conditioning side compressor
Between the low-pressure gas pipe and the liquid of the high-pressure liquid pipe in the common section.
Evaporated refrigerant by the evaporator that takes in the refrigerant and the air conditioning load unit
Heat exchange that enables heat exchange with the brine solution supplied to
Means, the evaporated refrigerant, and the liquid refrigerant in the high-pressure liquid pipe can exchange heat.
It has a second heat exchanging means for turning the liquid refrigerant into a supercooled state.
An air conditioning side evaporator is installed to form a refrigeration cycle on the air conditioning side.
In addition, the common side and the suction side of the refrigeration side compressor
Between the low pressure gas pipe and the second heat exchanger of the air conditioning side evaporator.
Steam that takes in the liquid refrigerant that has been supercooled by the replacement means
Bra that supplies refrigerant to the refrigerating load unit with evaporated vapor from the generator
First heat exchange means capable of exchanging heat with the in liquid and the evaporative cooling
It is possible to exchange heat with the medium and the supercooled liquid refrigerant,
Further has a second heat exchange means for making the liquid refrigerant in a supercooled state
A refrigerating cycle on the refrigerating side is formed by providing a refrigerating side evaporator.
A low pressure gas pipe on the suction side of the common side and the refrigeration side compressor;
During the period, the liquid that has been supercooled by the refrigeration side evaporator
Refrigerant load unit and refrigerant evaporated by the evaporator that takes in the refrigerant
Heat exchange with the brine solution that is circulated to the tank
A refrigeration cycle on the freezing side is provided by providing a freezing side evaporator having means.
And the air-conditioning side is included in the refrigerating side and the freezing side.
Therefore, it is important to arrange each of these evaporators in the same unit.
A featured combined refrigeration system. 4. A refrigeration side compressor, a refrigeration side compressor, and an air conditioning side pressure.
Common high-pressure gas pipe, common condenser and common high-pressure on discharge side of compressor
A common part where liquid pipes are sequentially connected and the suction side of the air conditioning side compressor
Between the low-pressure gas pipe and the liquid of the high-pressure liquid pipe in the common section.
Evaporated refrigerant by the evaporator that takes in the refrigerant and the air conditioning load unit
Heat exchange that enables heat exchange with the brine solution supplied to
Means, the evaporated refrigerant, and the liquid refrigerant in the high-pressure liquid pipe can exchange heat.
It has a second heat exchanging means for turning the liquid refrigerant into a supercooled state.
An air conditioning side evaporator is installed to form a refrigeration cycle on the air conditioning side.
In addition, the common side and the suction side of the refrigeration side compressor
Between the low pressure gas pipe and the second heat exchanger of the air conditioning side evaporator.
Steam that takes in the liquid refrigerant that has been supercooled by the replacement means
Bra that supplies refrigerant to the refrigerating load unit with evaporated vapor from the generator
First heat exchange means capable of exchanging heat with the in liquid and the evaporative cooling
It is possible to exchange heat with the medium and the supercooled liquid refrigerant,
Further has a second heat exchange means for making the liquid refrigerant in a supercooled state
A refrigerating cycle on the refrigerating side is formed by providing a refrigerating side evaporator.
A low pressure gas pipe on the suction side of the common side and the refrigeration side compressor;
During the period, the liquid that has been supercooled by the refrigeration side evaporator
Refrigerant load unit and refrigerant evaporated by the evaporator that takes in the refrigerant
Heat exchange with the brine solution that is circulated to the tank
A refrigeration cycle on the freezing side is provided by providing a freezing side evaporator having means.
The freezing side compressor, the refrigeration side compressor,
The high pressure high pressure discharged from the common high pressure gas pipe of the compressor on the air conditioning side.
Warm heat is circulated and supplied to the air conditioning load using a warm refrigerant.
Means is provided, characterized by arranging each of these evaporators in the same unit, including an air conditioning side the refrigerating side, on the freezing side
Composite type refrigeration apparatus according to.