KR101700948B1 - Hybrid system for charge and discharge of cold in vehicle - Google Patents

Abstract

The present invention relates to a hybrid system for charging and discharging the coil in a vehicle. A PCM cold charging tank (40) has a vehicle freezer (10) and PCM, mutually connected to exchange the heat through a liquid brine, and positioned between the vehicle freezer (10) and the PCM cold charging tank (40). A heat exchanger (20) for a hybrid interface is installed to exchange the heat before being introduced to the vehicle freezer (1) with respect to the liquid brine circulated through a circulation pipe (53) and after being discharged from the vehicle freezer (10). A circulation unit (50) is installed to circulate and treat the liquid brine to pass through the vehicle freezer (10) and the PCM cold charging tank (40). The PCM cold charging tank (40) comprises a heat exchanger (41) for charging and discharging the cold to absorb the heat from the liquid brine. The circulated unit (50) includes: a circulation pump (51) for circulating the liquid brine; and a brine tank (52) for removing the air inside the circulation pipe (53) in which the liquid brine is circulated and treated, and for supplementing the lost liquid brine. According to the present invention, the hybrid system for charging and discharging the coil in a vehicle can reduce the temperature recovery time with respect to the opening and the closing of the space inside a refrigerator of a refrigerating and freezing vehicle, can reduce the inconvenience of the limited driving with respect to the limited time for discharging the cold, can improve the efficiency, and can maintain the temperature inside the refrigerator in a safe and reliable manner.

Description

HYBRID SYSTEM FOR CHARGE AND DISCHARGE OF COLD IN VEHICLE [0002]

The present invention relates to a refrigerating and freezing system for a vehicle, and more particularly, to a refrigerating and freezing system for a vehicle, which can shorten the temperature restoration time due to the opening and closing of the interior space and improve the inconvenience and inefficiency This system can solve the problems of PCM cooling system which is used in the past. It is also possible to take advantage of the existing cooling system of PCM axis, to provide more safe, reliable and economical efficiency. .

In general, various methods for setting and maintaining the inside of a loading space of a refrigerating or freezing vehicle as a low temperature of refrigeration or freezing are disclosed.

Generally, there is a method in which a refrigerator is installed on a vehicle to maintain the inside temperature at a set temperature. There is also a method of using dry ice or ice in a high temperature, and a PCM (Phase Change Material; phase change material ) The PCM axis cooling system which uses the axial cooling system and utilizes it is also used in some cases.

In this case, in the case of maintaining the internal temperature by using only the freezer, it takes about 30 minutes to 1 hour to recover the desired temperature after opening and closing the high-temperature space due to the consumption of fuel in the vehicle due to operation of the freezer. Therefore, it is inevitable that the merchandise of the high-loaded goods is degraded during the restoration time, or the corruption proceeds in severe cases and the product safety is deteriorated. This can be more serious when the interior space is frequently opened and closed.

In order to solve the problem in the internal temperature control using the freezer, the PCM shaft cooling system is introduced. The PCM cooling system of the PCM shaft cold storage using the refrigerator outside the vehicle is cooled, A method in which heat is exchanged to a liquid brine and a low-temperature brine is forcibly circulated and converted into cold air through a unit cooler to maintain the temperature in the furnace. In addition, a ground PCM cold- If the cold PCM is cold-spun and the cold PCM is cooled, the chilled PCM in the ground PCM shaft cold storage is heat-exchanged with the brine to cool the PCM in the cold cold PCM cold storage through the circulation system. A method of cooling the inside of the furnace is used.

This PCM cooling system does not require the use of an on-board refrigerator, which can reduce the vehicle load due to the operation of the refrigerator, reduce fuel consumption, and provide additional benefits such as the sale of carbon emission rights due to the reduction of carbon dioxide. The temperature must be absolutely dependent on the PCM temperature in the cold PCM shaft cold storage, and the holding time of the inside temperature is absolutely dependent on the set temperature holding time of the PCM temperature, that is, the normal cooling time. And frequent opening and closing of the space, it is impossible to guarantee maintenance of the inside temperature when the vehicle is moved beyond the normal cooling time.

As a countermeasure for solving the above-mentioned disadvantages, it is possible to consider a method of disposing a stationary cooling station in a place where a vehicle moves, but it is necessary to install an infrastructure throughout the society, Significant capital must be invested and policy reviews should be preceded.

On the other hand, in recent years, there has been a growing demand for foods and medicines that require refrigeration and freezing, and as the demand for these increases, the need and efforts to reduce carbon emissions and fossil fuel consumption due to global warming are also increasing .

In addition, in the case of foods that require refrigeration and freezing, since the low-temperature delivery is not properly performed after cultivation or production, many products are lost during the delivery process, and the safety of the human body is also threatened. The efforts of each country and relevant organizations to strengthen the inspection as well as to establish the standards are becoming more and more widespread.

Korean Patent Publication No. 10-2011-0103514

It is an object of the present invention to solve the above-mentioned problems and to solve the above-mentioned problems. It is an object of the present invention to provide a refrigerator which can shorten the temperature restoration time due to the opening and closing of the interior space, And it is possible to improve the problems of the conventional cooling system of PCM axis and to take advantage of the existing cooling system of PCM axis to provide safe and reliable products for circulation products and to pursue economical efficiency And an object of the present invention is to provide a hybrid on-axis axial cooling system.

The present invention is not limited to the above-described embodiments, but may be modified in various ways. For example, the present invention is configured to maintain the internal temperature by maintaining the internal temperature of the PCM by cooling the PCM, And an object of the present invention is to provide an axial cooling system.

The present invention makes it possible to provide a more economical means for reducing fuel consumption while reducing carbon emissions, and to provide a more economical means compared to conventional refrigerating and freezing. In addition, And to provide a hybrid on-axis cooling system that enables more reliable and reliable product delivery and distribution.

In order to accomplish the above object, the present invention provides a cooling system for cooling a shaft of a hybrid vehicle, comprising a PCM shaft cooler (40) having a direct expansion type or indirect expansion type phase refrigerator (10) and a phase change material (PCM) The liquid phase brine located between the on-vehicle freezer 10 and the PCM shaft cooler 40 and circulating through the circulation pipe 53 is connected to the liquid phase brine so that heat exchange can be performed through the flow of the liquid brine, A hybrid interface heat exchanger 20 is installed so as to be able to perform heat exchange before flowing into the refrigerator 10 and after having flowed out from the refrigerator 10 and to pass through the refrigerator 10 and the PCM shaft cooler 40 There is provided a circulation unit 50 for circulating the liquid brine, and the PCM axial cold storage tank 40 is a cold storage heat exchanger for performing heat exchange for absorbing heat from the circulating liquid brine 41), and the circulation unit (50) is configured to remove the air in the circulation pump (51) for circulation of the liquid brine and the circulation pipe (53) in which the liquid brine is circulated, and to replenish the liquid brine And a brine tank (52).

Here, when the vehicle-mounted refrigerator (10) is a direct expansion type refrigerator, the heat exchanger (20) absorbs the heat of the liquid brine flowing through the circulation pipe (53) And a plate heat exchanger for increasing heat exchange efficiency with respect to volume and cost; When the refrigerating machine 10 is an indirect expansion type refrigerating machine, the heat exchanger 20 connects the liquid brine introduced into the refrigerating machine 10 side only for heat exchange, and the liquid refrigerant 10, Since the brine is discharged, the energy loss due to the heat exchange can be minimized by reducing the number of heat exchange by directly connecting to the circulation pipe 53 side.

Here, the circulation pump 51 uses an AC in-line type for high-efficiency use with a low power and an AC or DC underwater type so as to appropriately remove air in the circulation pipe 53 when it is not dependent on the amount of power Use; The brine tank 52 is configured to be partially or wholly openable and closeable for discharging the air in the circulation pipe 53 efficiently, and is disposed at a position higher than the PCM axial cooler 40.

And a unit cooler (30) disposed between the hybrid interface heat exchanger (20) and the PCM axial cooler (40) for performing heat exchange of air formed in the furnace together with the liquid brine , The unit cooler (30) includes a liquid brine circulating through the circulation pipe (53), a heat exchanger (31) for absorbing heat from the air, and a heat exchanger And a blower (32) for circulating in the hearth; The liquid coolant line circulating through the circulation pipe 53 is provided on the unit cooler 30 on the circulation pipe 53. The circulation pipe 53 is connected to the unit cooler 30, So that the loss of cold energy during the flow of the liquid brine can be minimized.

In this case, the PCM shaft cold storage unit 40 is connected to the external cold storage unit 71 so that the PCM inside the PCM cold storage unit 40 can be cooled without operating the on-vehicle refrigerator 10, An on-vehicle input line 75 and a on-board output line 76, which are connection pipes, are provided on the vehicle for circulating the liquid-state brine to the vehicle.

And an air conditioning cooler 80 connected to the circulation pipe 53 and disposed between the unit cooler 30 and the PCM shaft cooler 40. The air conditioning cooler 80 is a heat exchanger And a blower 82. The unit cooler 30 is used as a main cooler for the overall indoor air conditioning and the air conditioner cooler 80 is used as an auxiliary cooler, So that it is possible to compensate for the cold air loss.

Here, the bypass line (90) is provided on the circulation pipe (53) so that the liquid brine circulating through the circulation pipe (53) can be selectively controlled so as to pass through or not pass through the PCM shaft cold storage tank The bypass line 90 includes a selection valve 91 for selective circulation to the PCM cold chiller 40 for liquid brine and a check valve 92 for preventing back flow to the PCM cold chiller 40 .

According to the present invention, it is possible to shorten the temperature restoration time due to the opening and closing of the interior space and to improve the inconvenience and inefficiency of limited running of the vehicle due to limited cooling time, It is possible to achieve a beneficial effect that can improve problems.

The present invention is not only to maintain the temperature inside the PCM through the cooling of the PCM but also to cool the PCM by selecting the refrigerator in which the PCM can be cooled regardless of the moving location of the vehicle, The present invention can provide a hybrid on-axis axial cooling system capable of cooling the on-

The present invention can reduce fuel and carbon emission and can pursue economical efficiency compared with distribution through conventional refrigeration and freezing, and can perform cooling and cooling without restriction of time and space as compared with conventional ones, It is possible to provide a hybrid on-axis axial cooling system capable of reliable product delivery and distribution.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram illustrating a hybrid in-line cooling system according to an embodiment of the present invention. FIG.
2 is a configuration diagram illustrating a hybrid on-axis cooling system according to another embodiment of the present invention.
3 is a block diagram of a hybrid on-axis cooling system according to another embodiment of the present invention.
FIG. 4 is a view illustrating a hybrid on-axis cooling system according to another embodiment of the present invention.
FIG. 5 is a block diagram illustrating a hybrid vehicle cooling system according to another embodiment of the present invention. Referring to FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 5, the hybrid on-axis cooling system according to an embodiment of the present invention includes an on-vehicle refrigerator 10 capable of selectively having a direct expansion type or an indirect expansion type, and a phase change material PCM Phase chiller 40 having a PCM shaft cold storage 40 and a PCM shaft cold storage 40 having a phase change material And are interconnected.

The liquid brine located between the on-vehicle refrigerator 10 and the PCM shaft cooler 40 and circulating through the circulation pipe 53 flows into the onboard refrigerator 10 and flows out from the onboard refrigerator 10 The heat exchanger 20 for the hybrid interface is provided.

A circulation unit 50 is installed to circulate the liquid brine through the refrigerating machine 10 and the PCM shaft cooler 40.

At this time, the PCM shaft cold storage unit 40 includes a cold storage heat exchanger 41 for performing heat exchange for absorbing heat from the liquid brine circulated through the circulation unit 50.

The circulation unit 50 removes the air in the circulation pump 51 for circulating the liquid brine and the circulation pipe 53 for circulating the liquid brine, and additionally provides a brine tank 52 for replenishing the lost liquid brine .

The hybrid interface heat exchanger 20 is configured such that the coolant discharged from the on-vehicle freezer 10 flows into the circulation pipe 53 while flowing through the circulation pipe 53. In this case, It is preferable to use a plate type heat exchanger in order to use it as an action of absorbing the heat of the brine and increase the heat exchange efficiency with respect to volume and cost.

Here, in the case where the refrigerator is configured by an indirect expansion type refrigerator for the vehicle-mounted refrigerator (10), the heat exchanger (20) connects the liquid-state brine introduced into the vehicle-mounted refrigerator (10) 10 are connected to the side of the circulation pipe 53 so as to reduce the number of heat exchange, so that the energy loss due to the heat exchange can be minimized.

The circulation pump 51 preferably uses an in-line type or an underwater type. It is preferable to use an AC in-line type in order to use with a high efficiency with a low power. In the case where it is not dependent on a power amount, It is preferable to use an AC or DC underwater type so as to properly remove air in the air.

It is preferable that the brine tank 52 is constructed in such a structure that it can be partially or wholly opened and closed in order to effectively discharge the air in the circulation pipe 53 and is disposed at a position higher than the PCM axial cooler 40 Do.

Here, PCM, a phase change material used for refrigeration or freezing, preferably uses a phase change material having a freezing point at a temperature lower than the internal temperature required for refrigeration or freezing.

Here, the liquid brine used for the heat exchange while being circulated through the circulation pipe 53 has a freezing point lower than the preset temperature, but it is preferable to use the propylene glycol series in consideration of the corrosive and non-toxic environment in addition to the use environment And if methylene chloride is needed, it is preferable to use methylene chloride.

Here, in the place where the power source such as the refrigerator 10 and the circulation pump 51 is required, the auxiliary battery for the vehicle is connected to distribute the overload of the vehicle, so that the DC power is directly connected or the AC power is supplied through the inverter It can be configured for use.

Here, in the case of the on-vehicle refrigerator 10, the main engine in the vehicle or the sub engine based on the fossil fuel may be directly connected and driven. When the auxiliary battery is connected to the main battery of the vehicle, A separate safety circuit may be required.

The liquid brine circulated through the circulation pipe 53 flows toward the circulation unit 50 from the PCM shaft cooler 40 or circulates through the PCM shaft cooler 40 in the circulation unit 50 with respect to the circulation direction. As shown in Fig.

Here, the vehicle-mounted refrigerator 10 may be a power source or a power source inside the vehicle, or may be configured to be used without starting the vehicle by using an external AC power source or a DC power source.

The unit cooler 30 may be disposed between the hybrid interface heat exchanger 20 and the PCM axial cooler 40 to perform heat exchange with the liquid brine and the air formed in the cavity.

The unit cooler 30 includes a liquid brine circulating through the circulation pipe 53 and a heat exchanger 31 for absorbing heat from the air and absorbing heat from the air formed in the high- And a blower 32 for circulating in the hearth.

2, a cooling water pipe 60 connected to the unit cooler 30 and having a shutoff valve 61 is disposed on the circulation pipe 53, It is possible to selectively control so that the liquid brine circulating through the circulation pipe 53 does not flow into the unit cooler 30, and the loss of the cold energy during the circulating process of the liquid brine Can be minimized.

That is, in the case where the PCM in the PCM axial cold storage tank 40 is to be cooled by using the on-board refrigerator 10, the liquid shutoff valve 61 is closed and the liquid brine circulated through the circulation pipe 53 flows into the unit cooler 30 so as to flow directly to the PCM shaft coolant tank 40. [0053]

As shown in FIG. 3, the PCM axial cooler 40 is connected to an external axial cooler 71 so that the PCM axial cooler 40 can be cooled can do.

At this time, it is preferable that the on-board input line 75 and the on-board output line 76, which are connection pipes, are provided on the vehicle for circulating the liquid phase with the external shroud 71.

The external cooling device 71 is driven by the circulation pump 72 so as to output the liquid brine in the brine tank 73 and flow on the vehicle through the onboard input line 75 connected to the external output line 74 And is circulated through an external input line 77 which is used for PCM cooling of the interior of the PCM shaft chiller 40 and then connected to the secondary output line 76.

Here, it is preferable that a pipe fitting ball valve such as a one-touch valve or the like which is easy to attach and detach from each other is applied to a terminal portion of the external output line 74 and the on-board input line 75, It is preferable to apply a material such as Viton or PTFE (polytetrafluoroethylene) so as to have durability so as to perform internal gasket or packaging.

Here, a check valve 78 is provided on the piping leading to the PCM shaft cooler 40 through the on-board input line 75 to prevent the brine from flowing out or prevent the brine from flowing to the heat exchanger 20 side, It is preferable that a power valve 79 is installed to prevent the brine outputted from the heat exchanger 41 of the PCM cold storage tank 40 from flowing to the circulation unit 50.

Here, the power valve 79 controls the opening of the case where the vehicle is cooled by using the vehicle-mounted freezer 10, or the case of performing the cooling by using the external cooling device 71 .

As compared with a system in which PCM cooling is performed by using the on-board refrigerator 10 on a car, the cooling method using the external cooling / heating device 71 can use a cooling capability larger than that of the vehicle It is possible to have more axial cooling amount in the time, and when it is necessary to shorten the cooling time, it can be used in a very effective cooling method.

As shown in FIG. 4, the air conditioner may include an air conditioner cooler 80 connected to the circulation pipe 53 and disposed between the unit cooler 30 and the PCM shaft cooler 40.

At this time, the air conditioner cooler 80 includes a heat exchanger 81 and a blower 82.

Here, the unit cooler 30 may be used as a main cooler for the overall air conditioning in the cabin, and the air conditioning cooler 80 may be used as an auxiliary cooler to compensate for the local cold loss due to the opening / .

Here, the configuration including the air conditioner cooler 80 can minimize the temperature rise due to the opening and closing of the high-temperature space and enable high-speed temperature restoration. In the case of the refrigerating reefer, It is possible to perform the function of air curtain through the local cold air blowing around the opening / closing door immediately after the opening and closing, and to play the role of performing the local cold air replenishment.

In addition, it is possible to improve the safety of the product by preventing the decomposition of the merchandise due to the rapid temperature change around the door and deterioration of the merchandise caused by the rapid temperature change around the door due to the opening and closing of the inside space of the vehicle, And localized cooling can be performed in parallel with each other, so that the inside temperature can be quickly set to the set temperature and can be evenly distributed, thereby providing a safe and reliable refrigeration and freezing delivery.

5, a bypass line 90 is provided on the circulation pipe 53 so that the liquid brine circulating through the circulation pipe 53 can be selectively controlled so as to pass through or not pass through the PCM cold storage tank 40 . ≪ / RTI >

At this time, the bypass line 90 includes a selection valve 91 such as a three-way valve for selective circulation to the PCM shaft cooler 40 with respect to the liquid brine, and a check valve for preventing back flow to the PCM shaft cooler 40 And a valve 92. Of course, two shut-off valves may be provided instead of the selector valve 91, or a shut-off valve may be constructed instead of the check valve 92. [

The configuration including the bypass line 90 reliably preserves the temperature recovery and the merchantability of the load with respect to the cold loss due to the opening and closing of the interior space, The PCM is used as an auxiliary temperature maintaining means and can be selectively controlled to be used only as a cooling means in a state where the opening and closing doors are opened and closed and the start of the vehicle is stopped.

In addition, if it is necessary to use the chilled PCM in the PCM shaft chiller 40, the bypass line 90 is closed before the PCM chiller 40 and the chilled PCM in the PCM chiller 40 is not used The bypass line 90 is opened to induce the brine circulation so that the brine circulation which does not pass through the PCM shaft cooler 40 can be selectively controlled.

On the other hand, in the present invention, the case of cooling the vehicle by using the chilled refrigerator (10) or the chilled PCM in the PCM axial cooler (40) will be described as follows.

First, when cooling is carried out to keep the temperature in the furnace at a predetermined temperature by using the direct expansion type refrigerating machine 10, the refrigerant discharged from the refrigerating machine 10 through the hybrid interface heat exchanger 20 The liquid brine cooled thereby flows to the unit cooler 30 and the air is cooled through the heat exchanger 31 and then the PCM cold air cooler 40 and the circulating unit 50 are cooled. And then circulated to the refrigerator (10) and the heat exchanger (20) for the hybrid interface.

This process is continued until the temperature in the furnace reaches the set temperature.

At this time, if the temperature of the liquid brine passing through the PCM of the PCM axial cooler 40 is lower than the temperature of the solid phase, the temperature reaches the set temperature through the refrigerator 10 more effectively.

Accordingly, when the PCM of the PCM axial cold storage tank 40 is cooled to a temperature sufficiently lower than the set temperature, the cooling through the vehicle-mounted freezer 10 is effective, and the cooling performance using the vehicle-mounted freezer 10 can be further increased So that the set temperature can be restored quickly.

Further, in the case of cooling the liquid in order to adjust the temperature in the furnace to the set temperature by using the chilled PCM in the PCM axial cold storage tank 40, the liquid brine used for cooling is forcedly circulated through the circulation pump 51 During the circulation process, the PCM in the PCM shaft cooler 40 is deprived of heat through the heat exchanger 41 and flows to the heat exchanger 31 in the unit cooler 30 through the heat exchanger 20 for the hybrid interface And takes heat of the air by heat transfer with the air introduced by the drive of the blower 32, and circulates the heat in the hearth.

This process is continued until the temperature in the furnace reaches the set temperature.

In order to minimize the loss of cold energy during the flow process in the system, it is possible to prevent the flow to the refrigerator 10 and the heat exchanger 20 for the hybrid interface. It may be controlled to pass through the heat exchanger 31 of the PCM axial cooler 40 and the unit cooler 30 directly without passing through the heat exchanger 20 as the hybrid interface.

Accordingly, the present invention can shorten the temperature restoration time due to the opening and closing of the high-temperature space, and improve the inconvenience and inefficiency of limited running of the vehicle due to the limited cooling time, compared with the conventional PCM cooling systems And the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It will be apparent that various modifications and changes may be made by those skilled in the art.

10: vehicle-mounted refrigerator 20: hybrid interface heat exchanger
30: Unit cooler 31: Heat exchanger
32: blower 40: cold air of PCM shaft
41: heat exchanger 50: circulation unit
51: circulation pump 52: brine tank
53: Circulating piping 60: Cooling piping
61: Shut-off valve 71: External shaft cooler
80: air conditioner cooler 81: heat exchanger
82: blower 90: bar leaf line
91: Selection valve 92: Check valve

Claims (7)

delete The PCM axial cooler 40 having the direct expansion type or indirect expansion type phase difference refrigerator 10 and the phase change material PCM (Phase Change Material) are interconnected so that heat exchange can be performed through the flow of the liquid brine,
The liquid brine located between the on-vehicle refrigerator 10 and the PCM shaft cooler 40 and circulating through the circulation pipe 53 flows into the onboard refrigerator 10 and flows out from the onboard refrigerator 10 A heat exchanger 20 for a hybrid interface is provided so as to perform heat exchange,
A circulation unit 50 for circulating a liquid brine through the PCM shaft cooler 40 and the on-vehicle freezer 10 is installed,
The PCM shaft cold storage unit 40 includes a cold storage cold storage heat exchanger 41 for performing heat exchange for absorbing heat from a circulating liquid brine,
The circulation unit 50 removes the air in the circulation pump 51 for circulating the liquid brine and the circulation pipe 53 for circulating the liquid brine, and additionally provides a brine tank 52 for replenishing the lost liquid brine Including,
When the vehicle-mounted refrigerator (10) is a direct expansion type refrigerator, the heat exchanger (20) is used to absorb the heat of the liquid brine flowing in the circulation pipe (53) And a plate heat exchanger for increasing the heat exchange efficiency with respect to volume and cost;
When the refrigerating machine 10 is an indirect expansion type refrigerating machine, the heat exchanger 20 connects the liquid brine introduced into the refrigerating machine 10 side only for heat exchange, and the liquid refrigerant 10, And is connected to the circulation pipe (53) side to reduce the number of heat exchange, thereby minimizing energy loss due to heat exchange.
3. The method of claim 2,
The circulation pump 51 uses an AC in-line type for high efficiency use with low power and an AC or DC underwater type so that air in the circulation pipe 53 can be suitably removed if it is not dependent on the power amount;
Wherein the brine tank (52) is structured to be partially or wholly openable and closable for effectively discharging the air in the circulation pipe (53), and is arranged at a higher position than the PCM shaft cold storage tank (40) Coil cooling system.
3. The method of claim 2,
A unit cooler (30) disposed between the hybrid interface heat exchanger (20) and the PCM axial cooler (40) for performing heat exchange of air formed in the hearth together with the liquid brine; Further comprising:
The unit cooler 30 includes a liquid brine circulating through the circulation pipe 53 and a heat exchanger 31 for absorbing heat from the air. The unit cooler 30 absorbs heat from the air formed in the high- And a blower (32) for circulating the air in the space;
The liquid coolant line circulating through the circulation pipe 53 is provided on the unit cooler 30 on the circulation pipe 53. The circulation pipe 53 is connected to the unit cooler 30, So that the loss of cold energy during the flow of the liquid brine can be minimized.
3. The method of claim 2,
The PCM shaft cold storage unit 40 is connected to an external cooling unit 71 so that the PCM inside the PCM cold storage unit 40 can be cooled without operating the on-vehicle freezer unit 10, And an on-vehicle input line (75) and a on-vehicle output line (76), which are connection pipes, are provided on the vehicle for brine circulation processing.
5. The method of claim 4,
An air conditioning cooler (80) connected to the circulation pipe (53) and disposed between the unit cooler (30) and the PCM shaft cooler (40); Further comprising:
The air conditioning cooler 80 includes a heat exchanger 81 and a blower 82,
The unit cooler 30 is used as a main cooler for the overall indoor air conditioning and the air conditioning cooler 80 is used as an auxiliary cooler to compensate for the local cold loss due to the opening and closing of the indoor space. Hybrid coaxial cooling system.
3. The method of claim 2,
A bypass line (90) for selectively controlling the liquid brine circulating through the circulation pipe (53) to pass through the PCM cold storage tank (40) or not; Further comprising:
The bypass line 90 comprises a selection valve 91 or two shut-off valves for selective circulation to the PCM shaft chiller 40 for liquid brine and a check valve 88 for preventing back flow to the PCM chiller 40 And a valve (92) or a shut-off valve.

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