JP2011000900A - Cold storage system for vehicle air-conditioning and cold storage used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cold storage system for vehicle air-conditioning and a cold storage used therefor, capable of miniaturizing a device, enhancing heat exchange efficiency with a cold storage material, and providing sufficient cold air even when starting an air conditioner.SOLUTION: This cold storage system 101 for the vehicle air-conditioning has the cold storage 107, and includes a cold storage stroke of storing cold heat generated by an evaporator 7 in the cold storage via a heating medium in steady operation of an air-conditioning system, and an air cooling stroke of introducing and cooling air-conditioning air flowing in an air blowing passage 8 to the cold storage. The cold storage comprises a cold storage structure for holding a solid cold storage substance in a void of a heat conductive structure and having gas permeability, and is constituted to perform the air cooling stroke by making the air-conditioning air flow in the cold storage structure.

Description

  The present invention relates to a cold storage system for vehicle air conditioning and a cool storage unit used therefor. Specifically, during the steady operation of the air conditioning system, cold energy is stored in the regenerator, and when the engine is stopped or the air conditioning system is started, the stored cold heat is applied to the air conditioning air for air conditioning. The present invention relates to a regenerator system and a regenerator used therefor.

  In order to cool the automobile compartment, a heat pump type air conditioner is often used. A general heat pump type air conditioner for a vehicle is configured to take out the rotation of an engine and operate a compressor to move heat from the room to the outside air. For this reason, the air conditioner cannot be used unless the engine is operating.

  In particular, trucks often take a nap while the engine is running in order to activate the cooling function in summer. However, there is a problem that the driver cannot rest sufficiently due to engine noise and vibration.

  In addition, since the engine is continuously driven, fuel efficiency is deteriorated. Moreover, since exhaust gas is continuously discharged, the environment is adversely affected. In order to alleviate the above problems, a vehicle cooling apparatus including a regenerator is provided.

  Further, when the air conditioner is started in the summer, etc., warm air blows out, and it takes a considerable time until the passenger compartment temperature decreases. In addition, a large load is applied to the air conditioner. In particular, in an electric vehicle or the like, when the compressor is driven by a battery, the power of the storage battery may be greatly reduced, which may hinder driving.

Japanese Patent Publication No. 6-94255

  The vehicular cooling device described in the above-mentioned patent document includes a regenerative heat exchanger configured integrally with a regenerator material. When the cooling refrigeration cycle is in steady operation, the air-conditioning air cooled by the refrigeration cycle is introduced into the regenerative heat exchanger to perform cold storage. On the other hand, when the refrigeration cycle is stopped and cooling is required, air conditioning air is introduced into the regenerative heat exchanger to cool it, and then blown into the passenger compartment to cool it.

  In the vehicle cooling device described in the above patent document, a paraffin-based cold storage material is employed. The cold storage material has a melting point of 14 ° C. to 18 ° C., and is configured to accumulate latent heat by changing the layer from a liquid layer to a solid layer by applying cold air. In order to hold the regenerator material, the regenerator has a structure in which a large number of aluminum flat tubes and aluminum corrugated fins are alternately laminated and integrally joined to an aluminum frame. The cold storage material is sealed in the flat tube.

  The regenerator described in Patent Document 1 uses latent heat due to a layer change between a solid and a liquid. For this reason, it is necessary to maintain a structure capable of exhibiting a heat exchange function even when the cold storage material is in a liquid state. In the invention described in the above-mentioned patent document, in order to maintain the above structure, a structure in which a cool storage material is sealed in the flat tube is adopted. However, when the above structure is adopted, the structure of the regenerator becomes very complicated and the manufacturing cost increases.

  Further, in the regenerator, the regenerator material needs to be sealed in the flat tube. Therefore, a multi-layer structure is formed by alternately stacking the sealing structure of the regenerator material and a space in which air flows. is doing. For this reason, there exists a problem that an apparatus enlarges.

  And since the heat exchange area between the said flat tube and the said cool storage material is restricted, heat exchange efficiency is low. For this reason, there is a possibility that sufficient cool air cannot be obtained when the air conditioner is started in summer.

  In addition, in an electric vehicle or the like in which a compressor is driven by a motor, if a large amount of electric power is supplied to the air conditioner, the amount of battery consumption at the time of starting increases, which may hinder travel.

  The present invention provides a vehicle air-conditioning regenerator system that can reduce the size of the device, has high heat exchange efficiency with a regenerator, and can obtain sufficient cool air even when the air-conditioner is started, and a regenerator used therefor The task is to do.

  Invention of Claim 1 of this application is a cool storage system for vehicle air conditioning provided with a cool storage, Comprising: The cool storage which cools the cold heat which generate | occur | produced with the evaporator at the said cool storage via a heat medium at the time of the steady operation of an air conditioning system An air cooling step for guiding the air-conditioning air flowing through the air passage to the regenerator and cooling the regenerator. The regenerator is ventilated with a solid regenerator material held in the voids of the heat conductive structure. The air cooling process is performed by causing the air conditioning air to flow into the cold storage structure.

  In the present invention, the regenerator is configured to include a cool storage structure having air permeability while a solid regenerator material is held in the gap of the heat conductive structure.

  Since solid regenerator material is used, there is no layer change in the regenerator material. For this reason, a cool storage substance can be directly hold | maintained in the space | gap of a heat conductive structure. Thereby, the sealing structure for hold | maintaining a cool storage substance becomes unnecessary, and an apparatus can be reduced in size and weight.

  Moreover, the said heat conductive structure has high heat conductivity compared with the said solid cool storage material. Moreover, the solid cold storage material is directly held in the heat conductive structure. For this reason, compared with the case of only a cool storage material, the heat conductivity inside a cool storage structure becomes remarkably large. Therefore, in the cool storage process and the air cooling process, the heat transfer inside the cool storage structure becomes much faster, and the temperature difference inside the cool storage structure also becomes small. By adopting this structure, a large amount of cold heat can be accumulated in a short time in the cold storage process, and a large amount of air can be cooled in the air cooling process. Further, even when the compressor is driven by a motor in an electric vehicle or the like, the air can be sufficiently cooled at the initial start of the air conditioner without increasing the power consumption of the motor.

  As the heat conductive structure, a heat conductive honeycomb structure formed of metal or the like and a plurality of fin structures can be employed. By holding the solid regenerator material in a part of the gaps of these regenerator structures, a cool regenerator structure having air permeability can be configured.

  Further, as in the invention described in claim 2, it is preferable that the cold storage structure is configured by holding the solid cold storage material in a porous thermal conductive structure having continuous pores.

  As long as the solid cold storage material can be held, various porous heat conductive structures can be employed. For example, a metal porous body such as copper, nickel, or a chromium alloy can be employed. Since these metal porous bodies have a higher thermal conductivity than a solid regenerator material and a large area in contact with the solid regenerator material, heat transfer is rapidly performed inside the regenerator structure.

  The form and manufacturing method of the porous heat conductive structure are not particularly limited. For example, a metal porous body in which continuous pores are formed by foaming can be employed. Moreover, the said cool storage structure can be formed by hold | maintaining a solid cool storage material in the space | gap part of a metal porous body provided with the three-dimensional network structure as described in patent 268600 gazette.

  It is preferable to employ a porous body having a porosity of 70% or more. Furthermore, it is more preferable to employ one having a porosity of 90% or more. As the porosity increases, the amount of the solid cold storage material that can be held in the porous body increases, and the cold storage heat capacity of the cold storage structure increases.

  As the solid regenerator material, it is preferable to employ a resin regenerator material capable of regenerating latent heat while maintaining a solid shape. Moreover, it is preferable to employ | adopt as the said resin cool storage substance what can store cold in the predetermined temperature of cold storage temperature-5 degreeC-15 degreeC.

  As the solid regenerator material, for example, a latent heat regenerator material (registered trademark MHS series) manufactured by Mitsubishi Cable Industries, Ltd. can be employed. This latent heat storage material remains solid and has a latent heat amount of 175 to 180 kJ / kg. For this reason, it is possible to accumulate a large amount of cold heat in a small space.

  Various methods can be adopted as a method of filling the voids of the heat conductive structure with the solid cold storage material. For example, a technique using gravity or centrifugal force can be adopted.

  By adopting the solid cold storage material, the cold storage material can be easily held in the cold storage structure. Moreover, the heat capacity that can be stored is increased, and a large amount of air can be cooled in the cooling process. Moreover, the cooling effect can be maintained for a long time.

  As in the invention described in claim 3, the cold storage structure is formed in a porous shape having continuous pores, and the air-conditioning air is caused to flow into the continuous pores so that heat exchange is performed. Preferably composed

  The cold storage structure having the continuous pores can be formed by holding a solid cold storage material in a part of the porous heat conductive structure having continuous pores. For example, it is possible to construct a cold storage structure having a porous structure as a whole by laminating and holding the solid regenerator material so as to cover the surface of the continuous pores. In addition, the solid heat storage material can be filled in a partial region of the porous heat conductive structure without gaps to form a cold storage unit, and the air can be flowed to another region.

  By adopting the above configuration, a very large heat exchange area can be secured. For this reason, it becomes possible to perform heat exchange by flowing a large amount of air. Moreover, since heat exchange can be performed directly with the solid regenerator material, the heat exchange efficiency is remarkably increased.

  The heat medium which performs the said cold storage process is not specifically limited. As in the invention described in claim 5, the cold storage process is performed by causing the air conditioning air cooled by the evaporator to flow into the cold storage structure as a cold storage heat medium during the steady operation of the air conditioning system. Can be configured.

  When the air conditioning system is in steady operation, air is cooled by the evaporator. A part of the cooled air is guided to the regenerator, the cold heat is accumulated in the regenerator structure, and air for air conditioning is prepared using the regenerator when the air conditioning system is started or stopped.

  When adopting the above configuration, the cold storage air and the air conditioning air can flow in the same heat exchange flow path. For this reason, the structure of the cold storage structure is simplified.

  On the other hand, the cold storage process can be performed by flowing the heat medium flowing through the refrigeration circuit into the cold storage structure. In this case, as in the invention described in claim 6, the cool storage structure includes a cooling channel for flowing the air-conditioning air, and a cooling storage channel for flowing the heat medium evaporated by the evaporator. It can be prepared. The air cooling process is performed by causing air-conditioning air to flow through the cooling flow path. On the other hand, the cool storage process is performed by causing the heat medium to flow through the cool storage flow path.

  The utilization method of the cooling air prepared by the regenerator according to the present invention is not particularly limited. For example, as in the invention described in claim 7, the air cooled in the air cooling step can be returned to the air blowing path to perform air conditioning. Further, as in the invention described in claim 8, the air cooled in the cooling step can be directly blown out to the passenger compartment.

  The invention described in claim 9 is a regenerator for vehicle air conditioning that cools air for air conditioning, and includes a regenerator structure that retains a solid regenerator material in a gap of a heat conductive structure and has air permeability. At the same time, a heat exchange passage is provided in the cold storage structure to cause heat exchange with the solid cold storage material by flowing the cold storage heat medium and the air conditioning air in a gaseous state.

  The configuration of the cold storage structure is not particularly limited as long as the solid cold storage material can be retained and the solid cold storage material, the heat storage medium for cooling storage, and the air for air conditioning can be heat-exchanged. Absent. For example, by using a heat conductive member made of a plate-like metal material having high thermal conductivity such as copper, iron, aluminum, aluminum alloy, etc., a space in the cold storage container can be partitioned to form a breathable cold storage structure. . The cold storage structure can be configured by holding the solid cold storage material in a predetermined gap of the cold storage structure. By adopting this structure, it is possible to move cold through the heat conducting member to the solid regenerator material held in each section. For this reason, heat transfer is rapidly performed inside the cold storage structure, and a large amount of cold heat can be accumulated in a short time in the cold storage process. Further, a large amount of air for air conditioning can be cooled in the air cooling process. In addition, the heat exchange efficiency with the air for air conditioning can be further enhanced by disposing a porous heat conductive structure holding a cold storage material in each of the partitioned areas.

  The configuration of the heat exchange channel is not particularly limited. For example, a heat conductive pipe can be penetrated through the cold storage structure, and the cold storage heat medium and the air can flow in the pipe.

  In order to improve the heat exchange efficiency between the cold storage structure and the heat medium, it is preferable to join the heat conductive structure to the outer periphery of the pipe or the like. The joining method is not particularly limited, and welding, brazing, pressure welding, or the like can be employed.

  The form of the pipe is not particularly limited. The pipe is not limited to a cylindrical shape, and a pipe having a large heat exchange area such as a rectangular cross section or a star shape can be adopted.

  Furthermore, the heat transfer inside the regenerator can be performed more quickly by extending the fin-like heat exchange member from the heat conducting member or the pipe into the space holding the heat exchange channel or the solid regenerator material. And the heat exchange efficiency can be further increased.

  As the heat storage heat storage medium, air cooled by an evaporator can be used. In this case, as in the invention described in claim 13, a single heat exchange path through which both the cold storage heat medium and the air conditioning air flow can be provided in the cold storage structure.

  On the other hand, a heat medium vaporized by an evaporator can be used as the heat storage heat storage medium. In this case, as in the invention described in claim 14, a first heat exchange flow path for flowing the heat medium evaporated in the evaporator and a second heat exchange flow path for flowing the air-conditioning air are provided. Can be provided.

  According to a tenth aspect of the present invention, the cold storage structure is configured by holding the solid cold storage material in a void of a porous heat conductive structure having continuous pores.

The invention described in claim 11 is the heat exchange flow in which the cold storage structure is formed in a porous shape having continuous pores, and the continuous pores flow the cold storage heat medium and / or the air conditioning air. It constitutes a road.
vessel.

  The cool storage structure itself is formed in a porous shape, and the heat storage medium and the air cooling process can be performed by directly flowing the heat medium into the continuous pores of the cool storage structure. That is, direct heat exchange is performed between the heat medium or air and the solid regenerator material without using a pipe or the like. By adopting this configuration, it is possible to secure a very large heat exchange area and directly exchange heat with the cold storage material, so that the heat exchange efficiency can be remarkably increased. Therefore, a large amount of air can be cooled in the air cooling process.

  The invention described in claim 12 employs a cold storage material that can store latent heat while maintaining a solid shape as the solid cold storage material.

  The apparatus can be downsized, and the efficiency of heat exchange with the cold storage material is high, so that sufficient cold air can be obtained even when the air conditioner is started.

1 is a schematic circuit diagram showing a first embodiment of a cold storage system according to the present invention. It is sectional drawing which follows the axis | shaft which shows the structure of the regenerator which concerns on 1st Embodiment. It is sectional drawing which follows the III-III line in FIG. It is a figure which shows an example of the manufacturing method of the cool storage structure which concerns on this invention. It is sectional drawing which shows typically the structure of the cool storage structure which concerns on 1st Embodiment. It is a schematic circuit diagram which shows 2nd Embodiment of the cool storage system which concerns on this invention. It is sectional drawing which follows the axis | shaft which shows the structure of the regenerator which concerns on 2nd Embodiment. It is sectional drawing which follows the VIII-VIII line in FIG. It is a figure which shows the structure of the regenerator which concerns on 3rd Embodiment, and is sectional drawing equivalent to FIG. It is sectional drawing which follows the XX line in FIG.

  Embodiments according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 shows a schematic diagram according to a first embodiment of a cold storage system for vehicle air conditioning according to the present invention.

  As shown in FIG. 1, the vehicle air conditioning system 1 includes a cooling refrigeration cycle S. The refrigeration cycle S includes a compressor 3 driven by the engine 2, a condenser 4, a receiver 5, an expansion valve 6, and an evaporator 7. The compressor 3 may be an electric compressor.

  The compressor 3 compresses a gaseous heat medium (air conditioner gas) into a high-temperature and high-pressure semi-liquid state. The heat medium is cooled and liquefied in the capacitor 4. The heat medium liquefied in the capacitor 4 is sent to the receiver 5 and the unliquefied portion is separated, and moisture and impurities are removed by a desiccant and a strainer to generate a high-pressure liquid heat medium. . The liquid heat medium is sent to the expansion valve 6 and ejected in a mist form from a minute nozzle into the evaporator 7 to be vaporized. Due to the vaporization of the heat medium, latent heat is absorbed and the evaporator 7 is cooled. A large number of fins are provided on the outside of the evaporator 7 and are arranged in the air blowing path 8 through which air for air conditioning flows. The air passage 8 is provided with a fan 9 for allowing air to flow, and air for air-conditioning is introduced from the air intakes 8a and 8b and is allowed to pass through the evaporator 7 to be cooled. Thereby, cooling air for air conditioning is prepared. The vaporized heat medium is returned to the compressor 2 through the pipe line 13 constituting the refrigeration cycle S. The heat medium is circulated through the pipe line, and the processes are repeated.

  In the automatic air conditioner, a heater unit 9 is provided in the air passage 8. The heater unit 9 is configured so that the temperature of the air flowing through the air passage 8 can be adjusted to a desired temperature. On the upstream side of the heater unit 9, there is provided a mix damper 13 for adjusting the amount of airflow of the air-conditioning air that acts on the heater unit. The mix damper 13 flows through the air passage 8 by a temperature adjusting device (not shown). The air can be adjusted to a predetermined temperature.

  In addition, the air adjusted to the predetermined temperature is configured to be supplied into the vehicle compartment from a plurality of outlets 10, 11, and 12. The air outlets 10, 11, and 12 are provided with dampers 10a, 11a, and 12a that can open and close these air outlets, and are configured so that a desired air outlet can be selected.

  The cold storage system 101 for vehicle air conditioning according to the first embodiment includes an air introduction path 122 extending from the downstream side of the evaporator 7 of the air passage 8 and an air discharge connected to the vicinity of the outlets 10, 11, and 12. An air bypass circuit 108 including a passage 123 is provided, and the air bypass circuit 108 is provided with a regenerator 107.

  The air introduction passage 122 and the air discharge passage 123 are respectively provided with closing valves 114 and 115 for preventing cold heat from escaping from the regenerator 107 during cold storage. The air discharge path 123 is provided with a fan 111 for allowing air to flow into the regenerator 117.

  In the present embodiment, a closing damper 112 that prevents the flow of air in the air blowing path 8 is provided when performing a cooling stroke.

  In the present embodiment, when the air conditioning system 1 and the refrigeration cycle S are in steady operation, there is a cold storage process in which cooling air for air conditioning cooled by the evaporator 7 is introduced into the regenerator 107 to accumulate cold heat. Done.

  In the cold storage stroke, the closing damper 112 is set to an open state so as not to disturb the steady operation of the air conditioning system 1. On the other hand, in order to take in the air-conditioning air cooled by the evaporator 7 into the regenerator 107, the stop valves 114 and 115 are controlled to be opened and the fan 111 is operated. The intensity | strength of the said fan 111 and the opening degree of the said valves 114 and 115 are changed according to the driving | running state of the air conditioning system 1, and are adjusted so that steady operation may not be prevented. Thereby, a part of the cooling air flowing through the air passage 8 can be taken into the regenerator 107 to perform a regenerative process.

  When the refrigeration cycle S is in steady operation, the air-conditioning air is set to about 0 ° C to 10 ° C. In the present embodiment, the cooled air is stored in the regenerator 107 by using the cooled air-conditioning air as a heat storage medium.

  On the other hand, when the engine 2 is stopped and the refrigeration cycle S is not operated, or when the performance of the refrigeration cycle S or the evaporator 7 cannot be sufficiently exhibited at the time of starting the engine, air is introduced into the regenerator 107. Then, an air cooling process is performed.

  In the air cooling process, the shut-off valves 114 and 115 are controlled to be in an open state, and the fan 111 is operated, so that air is supplied from the air blowing path 8 through the air introduction path 122 to the regenerator. 107. At this time, the closing damper 112 is controlled to be closed so that air does not flow in the air blowing path 8. Note that the fan 9 at the inlet of the air passage 8 can be set in an operating state.

  In the air cooling process, the air introduced from the middle of the air passage 8 is cooled by flowing in the regenerator 107 and discharged side by side near the outlets 10, 11, 12 of the air passage 8. Is done. And it supplies to a vehicle interior via each said blower outlet 10,11,12. Thereby, it becomes possible to assist the cooling capacity when the engine is stopped or started.

  By adopting the above configuration, air for air conditioning can be used as a heat medium, and cold energy can be accumulated in the regenerator 107. In addition, when the engine is started, the air conditioning operation, particularly the cooling operation, can be performed using the cold energy stored in the regenerator 107. Moreover, in this embodiment, the cold storage system 101 according to the present invention can be configured by using a part of the conventional air conditioning system 1. Therefore, the cold storage system 101 can be configured compactly. Moreover, piping of a cold storage system etc. can be provided easily.

  2 to 5 show the structure of the regenerator 107 according to the first embodiment. In the regenerator 107, a cool storage structure 117 is filled in a cylindrical cool storage container 116 having heat insulation properties. Further, the air introduction path 122 and the air discharge path 123 constituting the air bypass circuit 108 are connected to the left and right wall portions of the cold storage container 116.

  The cold storage structure 117 in the present embodiment is configured by holding a solid resin cold storage material 102 in a void of a porous thermal conductive structure 119 having continuous pores.

  FIG. 4 shows an example of the appearance of the porous heat conductive structure 119 constituting the cold storage structure 117 and a method for manufacturing the cold storage structure 117. In the present embodiment, the resin regenerator material 102 is heated to the melting point or higher in the container 120 to be melted, and the porous heat conductive structure 119 is immersed in the resin cool storage material 102. As a result, the resin regenerator material 102 in a molten state is filled in the voids of the porous thermal conductive structure 119.

  The porous heat conductive structure 119 has a three-dimensional network structure having air permeability. In the present embodiment, a nickel metal porous body having a porosity of 90% or more is employed.

  As the porous heat conductive structure 119, those manufactured using various methods can be adopted. For example, the foamed porous resin support is coated with carbon or metal by a method such as electroless plating, vacuum deposition, or sputtering to impart conductivity. The porous resin support imparted with electrical conductivity is brought into close contact with the surface of the cathode body rotating around the rotating shaft also serving as a power supply bus bar in the plating bath, thereby electroplating the metal from the anode onto the porous body. . Thereafter, by removing the porous resin support, a metal porous body 119 having continuous pores in which triangular prism-like skeletons are three-dimensionally connected as shown in FIG. 4 can be obtained.

  The resin cold storage material 102 according to the present embodiment is a solid resin cold storage material including paraffin, resin, and other additives. The cold storage temperature is about −5 to 15 ° C., has a specific heat of about 2.5 kJ / kg · K, and a thermal conductivity of 0.21 to 0.22 W / mK. Moreover, it has a latent heat amount of 175 to 180 kJ / kg while maintaining the solid shape. Moreover, melting | fusing point is 100 degreeC or more. For example, a latent heat regenerator material (registered trademark MHS series) related to Mitsubishi Electric Cable Industries can be employed.

  In FIG. 5, the cross section of the cool storage structure 117 which concerns on this embodiment is shown typically. As shown in this figure, the resin cold storage material 120 is filled and held in the voids of the porous thermal conductive structure 119. In the present embodiment, the entire regenerator structure 117 is formed into a porous structure having continuous pores, and the continuous pores constitute a heat exchange channel 124 through which air flows.

  As shown in FIG. 5, the resin regenerator material 102 is uniformly laminated and held on the surface of the continuous pores of the porous heat conductive structure 119, and the whole regenerator structure 117 has air permeability. It is configured as follows. In this embodiment, the resin cool storage material 102 is filled so that the porosity of the cool storage structure 107 is 20%.

  The heat conductivity of the porous heat conductive structure 119 is larger than that of the resin cold storage material 102. For this reason, in the inside of the said cool storage structure 117, heat is mainly transferred through the said porous heat conductive structure 119, and the speed of the heat transfer in the said cool storage structure 117 is quick. Therefore, the cold heat input from the air as the cold storage heat medium that can flow through the air bypass passage 108 can be quickly moved to the entire area of the cold storage structure 117. For this reason, it becomes possible to perform a cool storage process in a short time, and it does not interfere with the steady operation of an air conditioner.

  As shown in FIG. 2, gaps 131 and 132 communicating with continuous pores of the cold storage structure 117 are provided between the cold storage structure 117 and the left and right axial walls of the cold storage container 116, and the air Air as a cooling heat medium introduced from the inlet 122 is caused to flow in the heat exchange path 124 inside the cold storage structure 117 through the gap 131. Further, the heat medium that has come out of the cold storage structure 117 is gathered through the gap 132 and is discharged from the air discharge path 123 to the blower path 8.

  In the present embodiment, the heat exchange path 124 through which the air for cold storage flows also serves as a heat exchange path through which the air for air conditioning to be cooled flows. That is, cold heat is accumulated by directly moving cold heat from the cold storage air to the resin cold storage material 102, and air conditioning air is directly cooled from the resin cold storage material 102.

  Moreover, the internal surface area of the heat exchange path 124 of the cold storage structure 117 is extremely large. Therefore, it is possible to exchange heat between the cold storage air and the cold storage structure 117 via a very large heat exchange surface. Thereby, cold heat can be moved to a large amount of air for air conditioning passing through the heat exchange path 124 composed of continuous pores, and can be used for air conditioning in the passenger compartment.

  With the above configuration, air conditioning can be performed using the cold stored in the regenerator 107 in a state where the engine or the like is stopped. Thereby, the idling operation of the engine is not required, and not only fuel efficiency can be improved, but also exhaust gas can be reduced.

  Moreover, since this embodiment can comprise the cool storage system 101 using the conventional ventilation path 8, it can comprise an apparatus compactly.

  FIG. 6 shows a second embodiment of the cold storage system according to the present invention. The configuration of the air conditioning system 1 is the same as that of the first embodiment, and a description thereof will be omitted.

  The cold storage system 201 according to the second embodiment performs a cold storage process using a heat medium constituting the refrigeration cycle S. In addition, since the structure of the cool storage structure in this embodiment is the same as that of 1st Embodiment, description is abbreviate | omitted.

  As shown in FIG. 6, in the present embodiment, a heat medium introduction path 222 that is connected to the downstream side of the evaporator 7 in the refrigeration cycle S and introduces a heat medium that flows through the refrigeration cycle, and the heat medium introduction path 222. A heat medium bypass circuit 208 including a heat medium discharge path 223 that is connected further downstream and returns the heat medium is provided, and a regenerator 207 is provided in the heat medium bypass circuit 208.

  In the regenerator 207, a pipe 218 for flowing the heat medium is provided. A cold storage process is performed by causing the heat medium to flow into the pipe 218.

  On the other hand, the regenerator structure 217 filled in the regenerator 207 is formed in a porous shape having continuous pores similar to those of the first embodiment, and the heat exchange path 224 constituted by the continuous pores is formed in the heat exchange path 224 constituted by the continuous pores. The air-cooling process can be performed by flowing the air-conditioning air.

  In this embodiment, the air cooling process is performed by directly introducing outside air into the regenerator 207. An outside air introduction path 232 connected to the cool storage container 207 and an air discharge path 233 connected from the cool storage 207 to the blower path 8 are provided.

  The outside air introduction path 232 and the air discharge path 233 are provided with closing valves 234 and 235, respectively, so that the cold heat in the regenerator does not escape during the cold storage stroke or heat retention. Further, a fan 211 is provided in the air discharge path 233 so that outside air can be introduced into the regenerator 207 and supplied to the air blowing path 8.

  In this embodiment, the air discharge path 233 is connected to the downstream side of the evaporator 7 so that normal air conditioning control can be performed by the cooling air cooled by the regenerator 207. As in the first embodiment, the air discharge passage 233 is provided in the vicinity of the air outlets 10, 11, and 12 so that the air cooled by the regenerator 207 is blown out directly to the passenger compartment. You can also

  The cold storage process in the present embodiment is performed by controlling the valves 224 and 225 to the open state and introducing a part of the heat medium of the refrigeration cycle S into the cold storage 207. The heat medium vaporized by the evaporator 7 has a temperature of about 0 ° C. to 10 ° C., and is introduced into the regenerator 207 to perform a regenerative process as in the first embodiment.

  On the other hand, the air cooling process is performed by controlling the closing valves 234 and 235 to be opened and operating the fan 211. As a result, the outside air is caused to flow through the regenerator 207 and is cooled and supplied to the air blowing path 8.

  7 and 8 show the structure of the regenerator 207 according to the second embodiment. In the second embodiment, similarly to the first embodiment, a cool storage structure 217 is filled in a cylindrical cool storage container 216 having heat insulation properties.

  The cool storage container 216 is connected to the outside air introduction path 232 for introducing outside air, and is also connected to an air discharge path 233. As in the first embodiment, the continuous pores of the cool storage structure 207 are connected. Constitutes a heat exchange path 224 for flowing outside air.

  On the other hand, in this embodiment, in order to flow the heat medium of the refrigeration cycle S into the cool storage structure, the pipe 218 is provided so as to penetrate the cool storage 207. The pipe 218 is made of a metal material having high thermal conductivity such as copper. As a result, the heat storage medium circulating in the refrigeration cycle S is introduced into the regenerator 207 to perform a regenerator stroke.

  By employ | adopting the said structure, a cold storage process can be performed using the heat medium which circulates through the refrigerating cycle S. FIG. On the other hand, since the inside of the porous regenerator structure 217 is cooled by flowing air, the same effect as in the first embodiment can be expected.

  9 and 10 show a regenerator 307 according to a third embodiment of the present invention. This embodiment is similar to the second embodiment in that the pipe 318 that is connected to the heat medium introduction path 322 and the heat medium discharge path 323 and causes the heat medium to flow in the cold storage structure 317 is connected to the cold storage structure. 317 is provided so as to penetrate.

  On the other hand, the cold storage structure 317 is formed by filling a void of a porous thermal conductive structure 319 having continuous pores similar to that shown in FIG. 4 with a solid resin cold storage material 302. And a heat exchange flow path 342 through which the heat medium flows. Note that the method for filling the porous heat conductive structure 319 with the solid cold storage material 302 is the same as that in the first embodiment, and thus the description thereof is omitted.

  As shown in FIG. 10, a plurality of heat conducting members 306 are provided so as to extend radially from the central axis of the cold storage container 316. The heat conducting member 306 extends to the inner peripheral wall of the cold storage container 316, and divides the cylindrical space in the cold storage container 316 into eight regions. The heat conducting member 306 is made of a material having a high heat conductivity such as copper, aluminum, or iron.

  Among the 8 regions partitioned by the heat conductive member 306, the porous heat conductive structure 319 filled with the resin regenerator material 302 is disposed in every other region formed to form the regenerator 341. Has been. A region where the porous heat conductive structure 319 filled with the cold storage material is not disposed is a heat exchange channel 342 through which air for air conditioning flows. Outside air is introduced into the heat exchange passage 342 via the outside air introduction passage 322 and is discharged from the discharge port 323 to perform an air cooling process.

  Between the cold storage structure 317 and the left and right axial walls of the cold storage container 316, gaps 330 and 331 communicating with the heat exchange channels 322 are provided, and the air introduced from the outside air inlet 322 is The four heat exchange channels 342 are divided and flowed in the axial direction through the gap 330 on the outside air introduction channel 322 side. In addition, the air after the heat exchange is gathered through the gap 331 on the air discharge port 323 side, and is supplied from the discharge port 323 to the air passage 8.

  As shown in FIG. 10, fin-like heat exchange members 344 and 345 extending from the heat conducting member 306 are provided in the cold storage unit 341 and the heat exchange channel 342, respectively. Similarly to the heat conducting member 306, the heat exchanging members 344 and 345 are formed from plate-like members having high heat conductivity such as copper, aluminum, aluminum alloy or the like. For this reason, the heat exchange efficiency between air and a resin cool storage substance can further be improved. In addition, the heat exchange member 345 according to the present embodiment has a low resistance because it is arranged along the flow of air, does not hinder the flow of air, and exchanges heat with a large amount of air. It can be carried out.

  In the present embodiment, cold heat is accumulated in the resin regenerator material from the heat medium flowing through the pipe 318 via the wall portion of the heat conducting member 306, the heat exchange member 344, and the porous heat conducting structure 319. The Therefore, it is possible to efficiently transfer and accumulate cold heat also in the resin cold storage material filled in the portions away from the heat conducting member 306 and the pipe 318. Further, the heat exchange can be performed by quickly moving the cold accumulated in the part away from the heat exchange flow path 342 to the air-conditioning air flowing through the heat exchange flow path 342. For this reason, a large amount of heat can be stored in the cold storage structure 317 in a short time, and the air cooling process can be performed by moving the cold heat to a large amount of air.

  Further, the regenerator 307 according to the present embodiment is also small and light, and the weight of the apparatus does not increase greatly. In addition, since a part of the conventional air conditioning system is used, the entire apparatus can be configured compactly.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  When the engine is stopped or the air conditioning system is started, air conditioning can be performed by preparing sufficient cooling air.

DESCRIPTION OF SYMBOLS 1 Air conditioning system 7 Evaporator 8 Air supply path 101 Cold storage system 107 for vehicle air conditioning

Claims (14)

A cold storage system for vehicle air conditioning comprising a cold storage,
During the steady operation of the air conditioning system, a cold storage process for storing the cold generated by the evaporator in the regenerator via a heat medium;
An air-cooling step of guiding and cooling the air-conditioning air flowing through the air passage to the regenerator,
The regenerator is configured with a cool storage structure having air permeability and a solid regenerator material held in the gap of the heat conductive structure,
A cold storage system for vehicle air conditioning configured such that the air cooling process is performed by causing the air conditioning air to flow into the cold storage structure.   The said cool storage structure is a cool storage system for vehicle air conditioning of Claim 1 comprised by hold | maintaining the said solid cool storage material to the heat conductive porous body which has a continuous pore.   3. The cold storage structure is formed in a porous shape having continuous pores, and heat is exchanged by allowing the air to flow in the continuous pores in the air cooling process. The cold storage system for vehicle air conditioning of any one of these.   The cold storage system for vehicle air conditioning according to any one of claims 1 to 3, wherein the solid cold storage material is a cold storage material capable of storing latent heat while maintaining a solid shape.   The said cool storage process is performed by flowing the air cooled by the said evaporator in the said cool storage structure as a heat storage for cold storage at the time of the steady operation of an air-conditioning system. A cold storage system for vehicle air conditioning described in 1. The cold storage structure is
An air cooling flow path for flowing the air conditioning air;
A cold storage flow path for flowing the heat medium evaporated by the evaporator,
The air cooling process is performed by causing air conditioning air to flow in the air cooling channel,
The cold storage system for vehicle air conditioning according to any one of claims 1 to 4, wherein the cold storage process is performed by causing the heat medium to flow in the cold storage flow path.   The cold storage system for vehicle air conditioning according to any one of claims 1 to 6, wherein air conditioning is performed by returning air cooled in the air cooling step to the air blowing path.   The cold storage system for vehicle air conditioning according to any one of claims 1 to 6, wherein the air cooled in the air cooling step is directly blown out to the passenger compartment. A vehicle air conditioner regenerator for cooling air conditioning air,
A solid regenerator material is retained in the voids of the heat conductive structure and has a breathable cool storage structure,
A vehicle air conditioner regenerator in which a heat exchange flow path is provided in the inside of the regenerator structure to cause a heat storage medium in a gaseous state and the air conditioning air to flow to exchange heat with the solid regenerator material.   The said cool storage structure is a cooler for vehicle air conditioning of Claim 9 comprised by hold | maintaining the said solid cool storage material in the space | gap of the porous heat conductive structure which has a continuous pore.   The cold storage structure is formed in a porous shape having continuous pores, and the continuous pores constitute a heat exchange channel for flowing the cold storage heat medium and / or the air conditioning air. The regenerator for vehicle air conditioning according to any one of claims 9 and 10.   The regenerator for vehicle air conditioning according to any one of claims 9 to 11, wherein the solid regenerator material is a regenerator material capable of storing latent heat while maintaining a solid shape.   The vehicle air conditioner regenerator according to any one of claims 9 to 12, wherein a single heat exchange path is provided in the cool storage structure to flow both the cool storage heat medium and the air conditioning air. . A first heat exchange flow path for flowing the heat medium evaporated in the evaporator;
The vehicle air conditioner regenerator according to any one of claims 9 to 12, further comprising a second heat exchange flow path for causing the air conditioning air to flow.

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