JP7455392B2 - Automotive electric temperature control device - Google Patents

Description

The present invention relates to a vehicle-mounted electric temperature control device that manages the temperature inside a vehicle.

Patent Document 1 discloses a refrigeration cycle that absorbs heat by compressing refrigerant with a compressor, condensing high-pressure refrigerant with a condenser, lowering the pressure of the liquefied refrigerant with an expansion valve, and vaporizing the low-temperature, low-pressure refrigerant with an evaporator. has been done. The refrigeration cycle disclosed in Patent Document 1 is used as a refrigeration device for cooling a refrigerated container of an automobile. The refrigeration cycle is also used to cool the inside of the vehicle. A cooling device using a refrigeration cycle is comprised of the above-mentioned evaporator, condenser, compressor, expansion valve, and the like. The evaporator is generally placed inside the vehicle. Condensers are generally placed outside the vehicle because they require heat exchange with the atmosphere. The compressor is generally located next to the engine.

Japanese Patent Application Publication No. 2016-205797

However, the people who can perform the refrigerant piping work for the refrigeration cycle are limited to those who are legally qualified in order to prevent the release of fluorocarbon gas into the atmosphere, so unqualified people cannot install air conditioning systems in completed vehicles. There is a desire for a cooling system in which a compressor, condenser, expansion valve, evaporator, refrigerant piping, etc. are pre-installed so that even unqualified personnel can install the cooling system in a completed vehicle.
Furthermore, if a cooling device is installed outside the vehicle, there is a risk that the length, height, or width of the vehicle will be expanded by the cooling device, and such vehicles are not legally permitted to run on public roads.

Therefore, the present invention has been made in view of the above circumstances, and can be retrofitted to a completed vehicle by not only a person who is qualified to handle refrigerants but also someone who is not qualified to handle refrigerants, without increasing the length, height, or width of the vehicle. The purpose of the present invention is to provide an on-vehicle electric temperature control device that can perform

In order to solve the above problems, an in-vehicle electric temperature control device is installed in the cabin of a vehicle, and includes an electric compressor, an evaporator, an expansion valve, and a condenser. an evaporator fan that is housed in the interior space and generates an airflow that flows into the interior space from outside the cabinet and flows out of the cabinet via the evaporator; a condenser fan that is housed in the internal space and generates an airflow that flows from outside the cabinet into the internal space of the cabinet and flows out of the cabinet via the condenser; a partition wall that divides an internal space of the cabinet into a cooling chamber and a heat radiation chamber, the cabinet is installed on a floor behind a driver's seat and a passenger seat of the vehicle, and the condenser, the evaporator, and the electric compressor are installed in the vehicle. The electric compressor, the evaporator, and the evaporator fan are arranged in the width direction of the cooling chamber, the evaporator fan is attached to the evaporator, and the first suction port and the blowout port communicate with the cooling chamber. A cabinet is formed, the condenser and the condenser fan are housed in the heat dissipation chamber, the condenser fan is attached to the condenser, and a second inlet and an exhaust port are formed in the cabinet so as to communicate with the heat dissipation chamber.

According to the above, since the electric compressor is driven by electric power, it is not necessary to install the electric compressor near the engine of the vehicle, and the in-vehicle electric temperature control device can be installed inside the vehicle.
Since the electric compressor, evaporator, expansion valve, and condenser are housed in the interior space of the cabinet, an on-vehicle electric temperature control system can be retrofitted to a vehicle not only by a person who is qualified to handle refrigerants, but also by someone who is not qualified to handle refrigerants.
Since the cabinet housing the electric compressor, evaporator, expansion valve, and condenser is installed inside the vehicle, the on-board electric temperature control device does not affect the exterior shape of the vehicle. The vehicle length, vehicle height, and vehicle width of a vehicle equipped with an on-vehicle electric temperature control device will not be expanded.

The in-vehicle electric temperature control device further includes a heat exhaust duct connected between a ventilation duct already installed in the vehicle and an internal space of the cabinet so as to communicate from the inside of the vehicle to the outside of the vehicle.

According to the above, the condenser is air-cooled by the airflow of the condenser fan, and the airflow is discharged to the outside of the vehicle through the heat exhaust duct and the ventilation duct. Since the ventilation duct is already installed in the vehicle, the modification of the vehicle can be kept to a minimum when installing the in-vehicle electric temperature control device in the vehicle.

The vehicle-mounted electric temperature control device further includes an internal duct that is housed in an internal space of the cabinet and forms a flow path from the condenser to the heat exhaust duct.

According to the above, the airflow from the condenser fan flows from the condenser through the internal duct to the heat exhaust duct, and the airflow does not go around to unnecessary locations. Therefore, the airflow from the condenser fan is efficiently discharged, resulting in high heat exhaust efficiency.

The cabinet is installed on the floor behind the driver's seat and passenger seat of the vehicle, and the condenser, the evaporator, and the electric compressor are arranged in the width direction of the vehicle.

According to the above, since the condenser, evaporator, and electric compressor are arranged in the vehicle width direction, it is possible to lengthen the cabinet dimensions in the vehicle width direction and shorten the cabinet dimensions in the vehicle height direction and vehicle length direction. can. Therefore, the space under the back of the driver's seat and passenger seat can be used effectively and the on-vehicle electric temperature control device can be installed in that space. Hateful.

The vehicle-mounted electric temperature control device further includes a blow-off duct protruding from the evaporator to the outside of the cabinet, the cabinet being installed on a floor in the vehicle interior, and the blow-off duct being erected against the top surface of the cabinet. The air blowing duct has an air outlet formed at an upper end of the air blowing duct.

According to the above, since the air outlet is formed at the upper end of the air outlet duct, the cooling air spreads easily into the vehicle interior. Therefore, temperature unevenness in the vehicle interior can be suppressed.

The cabinet is installed on the floor behind the driver's seat and the passenger seat of the vehicle, and the blow-off duct is arranged behind a position between the driver's seat and the passenger seat.

According to the above, even if the backrest of the driver's seat or passenger seat tilts backward, the backrest does not hit the blow-off tube.

The vehicle-mounted electric temperature control device further includes an electric heater provided in a path of airflow by the evaporator fan.

According to the above, by causing the electric heater to generate heat when the temperature in the vehicle interior becomes low, the temperature in the vehicle interior can be maintained at the set temperature.

The vehicle-mounted electric temperature control device is provided in the internal space of the cabinet and further includes a partition wall that divides the internal space of the cabinet into a cooling chamber and a heat dissipation chamber, the evaporator and the evaporator fan are housed in the cooling chamber, the evaporator fan is attached to the evaporator, a first intake port and an exhaust port are formed in the cabinet so as to communicate with the cooling chamber, the condenser and the condenser fan are housed in the heat dissipation chamber, the condenser fan is attached to the condenser, and a second intake port and an exhaust port are formed in the cabinet so as to communicate with the heat dissipation chamber.

According to the embodiment of the present invention, it is not necessary to install an electric compressor near the engine of the vehicle, and the vehicle-mounted electric temperature control device can be installed inside the vehicle interior.
An on-vehicle electric temperature control device can be retrofitted to a vehicle not only by a person who is qualified to handle refrigerants but also by an unqualified person.
The vehicle-mounted electric temperature control device does not affect the external appearance of the vehicle, and the vehicle length, vehicle height, and vehicle width of the vehicle equipped with the vehicle-mounted electric temperature control device will not be expanded.

FIG. 2 is a schematic side view of the vehicle. FIG. 2 is a perspective view of a driver's seat, a passenger's seat, and an in-vehicle electric temperature control device viewed diagonally from above. FIG. 1 is a perspective view of the appearance of an on-vehicle electric temperature control device. FIG. 1 is a perspective view of the appearance of an on-vehicle electric temperature control device. FIG. 2 is a perspective view showing the inside of the vehicle-mounted electric temperature control device.

Embodiments of the present invention will be described below with reference to the drawings. However, although various limitations that are technically preferable for carrying out the present invention are attached to the embodiments described below, the scope of the present invention is not limited to the following embodiments and illustrated examples.

[1] Outline and installation location of the vehicle-mounted electric temperature control device FIG. 1 is a schematic side view of the vehicle 90, and FIG. 2 shows the front seat 94 and the vehicle-mounted electric temperature control device 1 viewed diagonally from above. It is an overhead perspective view.

Air conditioners pre-installed in commercially available completed vehicles may not be able to sufficiently cool the interior of the vehicle. In order to be able to sufficiently cool the interior of the vehicle even in such a case, a vehicle-mounted electric temperature control device 1 that adjusts and manages the temperature inside the vehicle is retrofitted to the completed vehicle. The in-vehicle electric temperature control device 1 is unitized and modularized so that it can be mounted on a completed vehicle with simple processing. The completed vehicle on which the in-vehicle electric temperature control device 1 is installed is assumed to be a box-type freight vehicle such as a van, but it may also be a wagon vehicle such as a one-box vehicle, a station wagon, or a minivan.

Electric power for operating the vehicle-mounted electric temperature control device 1 is supplied from a sub-battery that is separate from the main battery that is pre-installed in the completed vehicle. The sub-battery is retrofitted to the completed vehicle inside or outside the vehicle interior, and is installed, for example, in an existing storage space in the vehicle interior or beside the vehicle-mounted electric temperature control device 1. While the engine is operating, electric power generated by an alternator driven by the engine is distributed to the main battery and the sub-battery by the isolator, and the main battery and the sub-battery are charged. While the engine is stopped, a charger connected to a commercial power source supplies power to the sub-battery, and the sub-battery is charged. Even when the sub-battery is charged from an alternator or charger, power can be supplied from the sub-battery to the vehicle-mounted electric temperature control device 1. In addition, when the sub-battery is not charged from the alternator or charger, the on-vehicle electric temperature control device 1 is supplied with electric power from the sub-battery to the on-board electric temperature control device 1 until the sub-battery storage capacity reaches zero. The device 1 can be activated.

The vehicle-mounted electric temperature control device 1 is not separated into an outdoor unit and an indoor unit, and the vehicle-mounted electric temperature control device 1 is installed inside the vehicle interior of a completed vehicle. Since piping work and refrigerant filling work across the inside and outside of the vehicle compartment are not required, it is easy to retrofit the vehicle-mounted electric temperature control device 1 to a completed vehicle. The in-vehicle electric temperature control device 1 installed in the vehicle interior does not affect the external shape of the completed vehicle, and does not become a factor in increasing the legal vehicle length, vehicle height, and vehicle width of the completed vehicle. For example, the in-vehicle electric temperature control device 1 does not cause violations of vehicle length restrictions, vehicle height restrictions, or vehicle width restrictions.

As shown in FIGS. 1 and 2, a vehicle 90 on which the in-vehicle electric temperature control device 1 is mounted is a box-type truck. An on-vehicle electric temperature control device 1 is installed inside a vehicle 90, particularly on a floor 93 of a luggage compartment 91. Therefore, compared to a cooling device installed on the roof or side panel of the vehicle interior, the vehicle-mounted electric temperature control device 1 can be installed in the vehicle 90 with minimal processing. The installation work of the device 1 becomes easier. In addition, when the worker works in the cargo compartment 91, he only needs to be careful of the vehicle-mounted electric temperature control device 1 under his feet, and the worker's head does not hit the vehicle-mounted electric temperature control device 1. Safety can be ensured from

The front seat 94 is installed on the floor 93 at the front inside the vehicle interior. One of the two front seats 94 is a driver's seat, and the other is a passenger's seat. In the vehicle interior, the area behind the front seat 94 is a luggage compartment 91, and the area in front of it is a driver's cabin 92. The curtain rail 97 is installed on the roof 96 immediately behind the front seat 94 and extends in the vehicle width direction. The curtain 98 is suspended by its curtain rail 97. The luggage compartment 91 is partitioned off from the driver's cabin 92 by a curtain 98, and heat insulation is achieved between the luggage compartment 91 and the driver's cabin 92. The rear seat 95 is installed on the floor 93 of the luggage compartment 91 behind the front seat 94. The rear seat 95 may be foldable or removable, or may not be installed.
In this embodiment, the in-vehicle electric temperature control device 1 is installed on the floor 93 in front of the rear seat 95.

The vehicle-mounted electric temperature control device 1 sucks air in the luggage compartment 91, cools the sucked air, and blows out the cooled air into the luggage compartment 91. As a result, the inside of the luggage compartment 91 is cooled by the vehicle-mounted electric temperature control device 1, and the temperature inside the luggage compartment 91 is controlled and adjusted to the set temperature. Further, during cooling, the vehicle-mounted electric temperature control device 1 sucks air in the luggage compartment 91, radiates heat to the sucked air, and blows out the air whose temperature has increased due to heat exchange to the outside of the vehicle.
Further, when the temperature inside the luggage compartment 91 is lower than the set temperature, the in-vehicle electric temperature control device 1 sucks air inside the luggage compartment 91, heats the sucked air, and transfers the heated air to the vehicle. Blows out into the room. Thereby, the temperature inside the luggage compartment 91 is managed and adjusted so as to return to the set temperature.

3 and 4 are external perspective views of the vehicle-mounted electric temperature control device 1. FIG. FIG. 5 is a perspective view showing the inside of the vehicle-mounted electric temperature control device 1. As shown in FIG. As shown in FIGS. 3 to 5, the in-vehicle electric temperature control device 1 includes a cabinet 10, a partition wall 16, a first internal duct 19, an outlet pipe 20, a second internal duct 22, a heat exhaust duct 25, a refrigeration cycle 30, It includes a condenser fan 35, an evaporator fan 36, an air cooling fan 37, an electric heater 50, and a control unit 55. The refrigeration cycle 30 includes an electric compressor 31, a condenser 32, an expansion valve 33, and an evaporator 34.

[2] Cabinet, Partition Wall, Internal Duct, Heat Exhaust Duct, and Blowout Tube The cabinet 10 is a rectangular parallelepiped box and has an internal space. The cabinet 10 is installed on the floor 93 so that its longitudinal direction is parallel to the vehicle width direction, and its depth direction is parallel to the vehicle length direction. As shown in FIG. 2, cabinet 10 is located in a lower position directly behind front seat 94. As shown in FIG. Here, among the six faces of the cabinet 10, the front face is a face facing the forward direction of the vehicle 90, the rear face is a face facing the backward direction of the vehicle 90, and the left side face is a face facing the left turn direction of the vehicle 90, The right side surface of the cabinet 10 is a surface facing the right turning direction of the vehicle 90.

As shown in FIGS. 3 and 4, a first suction port 11 is formed in the center of the rear surface of the cabinet 10. A second suction port 12 is formed on the left side of the rear surface of the cabinet 10. A third suction port 13 is formed on the right side surface of the cabinet 10. An air outlet 14 is formed in the center front part of the upper surface of the cabinet 10. An exhaust port 15 is formed on the left side surface of the cabinet 10.

As shown in FIG. 5, a partition wall 16 parallel to the side surface of the cabinet 10 is provided inside the cabinet 10, and the internal space of the cabinet 10 is divided into left and right spaces 17 and 18 by the partition wall 16. There is. Hereinafter, a space 17 on the right side of the partition wall 16 in the internal space of the cabinet 10 will be referred to as a cooling chamber 17, and a space 18 on the left side of the partition wall 16 will be referred to as a heat radiation chamber 18. The first suction port 11 , the third suction port 13 , and the air outlet 14 communicate with the cooling chamber 17 , and the second suction port 12 and the exhaust port 15 communicate with the heat radiation chamber 18 .

A heat exhaust duct 25 is connected to the exhaust port 15 . The heat exhaust duct 25 is connected to an existing ventilation duct 99 (see FIG. 1) in the vehicle 90. The ventilation duct 99 is used, for example, for ventilation or atmospheric pressure adjustment.

A hollow box-shaped or tube-shaped first internal duct 19 is provided in the upper part of the heat radiation chamber 18 . The heat radiation chamber 18 is divided by the first internal duct 19 into a hollow space of the first internal duct 19 and an outside thereof. The exhaust port 15 opens inside the first internal duct 19. The heat exhaust duct 25 is connected to the first internal duct 19 via the exhaust port 15. An opening 19a is formed in the lower surface of the first internal duct 19. The inside and outside of the first internal duct 19 communicate through the opening 19a. The hollow space of the first internal duct 19 serves as a flow path from a condenser 32 to a heat exhaust duct 25, which will be described later.

A hollow box-shaped or tube-shaped second internal duct 22 is provided at the front of the cooling chamber 17 . The second internal duct 22 is connected to the lower end of the blowout tube 20. The second internal duct 22 is connected to the blow-off tube 20 to form the blow-off duct 23. The hollow space of the blow-off duct 23 serves as a flow path from an evaporator 34, which will be described later, to the vehicle interior.
As shown in FIG. 2, the blow-off pipe 20 passes through the blow-off port 14 on the top surface of the cabinet 10 and projects above the cabinet 10. The blow-out cylinder 20 is provided in an upright state on the upper surface of the cabinet 10. Since the blow-off tube 20 is arranged immediately behind the position between the front seats 94, even when the backrest of the front seat 94 is tilted backward, the blow-off tube 20 will not hit the blow-off tube 20.

The tip surface of the upper end of the blow-off tube 20 is directed diagonally upward to the rear, and an upper blow-off port 21 is formed in the tip surface.

[3] Refrigeration cycle, condenser fan, and evaporator fan Since the driving power for the electric compressor 31 shown in FIG. 5 is supplied from the sub-battery, the electric compressor 31 can be operated even when the engine of the vehicle 90 is stopped. can. Furthermore, because the electric compressor 31 is electric, there is no need to transmit the power from the engine of the vehicle 90 to the electric compressor 31 through a transmission mechanism or the like, and the on-vehicle electric temperature control device 1 can be installed inside the vehicle. I can do it.

When the electric compressor 31 in operation compresses the refrigerant, the refrigerant circulates through the electric compressor 31, the condenser 32, the expansion valve 33, and the evaporator 34 in this order through the pipe. The circulating refrigerant changes its state under the action of the electric compressor 31, condenser 32, expansion valve 33, and evaporator 34 as described below. First, the electric compressor 31 compresses the low-temperature, low-pressure gaseous refrigerant sent from the evaporator 34, so that the refrigerant becomes a high-temperature, high-pressure gas-liquid mixed state. The condenser 32 exchanges heat between the high-temperature, high-pressure refrigerant sent from the electric compressor 31 and the air outside the condenser 32, so that the refrigerant is condensed into a low-temperature, high-pressure liquid, and heat is radiated to the outside air. When the expansion valve 33 adiabatically expands the low-temperature, high-pressure refrigerant sent from the condenser 32, the refrigerant becomes a low-temperature, low-pressure mist that is easily vaporized. The evaporator 34 exchanges heat between the low-temperature, low-pressure refrigerant sent from the expansion valve 33 and the air outside the evaporator 34, whereby the refrigerant absorbs heat and vaporizes, thereby cooling the air. A low temperature, low pressure gaseous refrigerant is sent from the evaporator 34 to the electric compressor 31.

The electric compressor 31, condenser 32, expansion valve 33, evaporator 34, and pipe are housed in the cabinet 10, and are integrated into a unit. Therefore, when installing the vehicle-mounted electric temperature control device 1 in the vehicle interior, refrigerant piping work and refrigerant filling work are unnecessary. Therefore, even a person who cannot legally handle refrigerants such as fluorocarbons can install the vehicle-mounted electric temperature control device 1 in the vehicle interior.

An electric compressor 31, an evaporator 34, and a condenser 32 are arranged in the vehicle width direction in order from right to left. Therefore, the cabinet 10 can be made into a horizontally elongated shape, and the space under the back of the front seat 94 can be effectively utilized, and the vehicle-mounted electric temperature control device 1 can be installed in that space. Here, lateral length means that the dimension of the cabinet 10 along the vehicle width direction is longer than the dimension of the cabinet 10 along the vehicle length direction and the dimension of the cabinet 10 along the vehicle height direction. In addition, since the vehicle-mounted electric temperature control device 1 is installed on the floor 93 at the front end of the luggage compartment 91, the vehicle-mounted electric temperature management device 1 does not get in the way when working in the luggage compartment 91, and the vehicle-mounted electric temperature management device 1 The electric temperature control device 1 does not give a feeling of pressure to the person sitting in the rear seat 95.

The electric compressor 31 and the evaporator 34 are housed in the cooling chamber 17. The electric compressor 31 is disposed closer to the right side of the cabinet 10 in the cooling chamber 17, and faces the third suction port 13 in the longitudinal direction (vehicle width direction) of the cabinet 10. An air cooling fan 37 such as a propeller fan is installed in the cabinet 10 at a position facing the third suction port 13. The air cooling fan 37 sucks air outside the cabinet 10, that is, air inside the luggage compartment 91, through the third suction port 13, and blows the air to the electric compressor 31. Therefore, the electric compressor 31 is air-cooled. Air that has passed through the electric compressor 31 flows to the evaporator 34. Such air flow is caused not only by the differential pressure generated by the air cooling fan 37 but also by the differential pressure generated by the evaporator fan 36, which will be described later. Note that the driving power for the air cooling fan 37 is supplied from the sub-battery.

The evaporator 34 is arranged close to the partition wall 16 in the cooling chamber 17 and faces the first suction port 11 in the depth direction of the cabinet 10 . A second internal duct 22 is connected to the front of the evaporator 34 . An evaporator fan 36 such as a centrifugal fan is attached to the rear of the evaporator 34.

Driving power for the evaporator fan 36 is supplied from the sub-battery, and the evaporator fan 36 is operated thereby to generate airflow. The air flows from the outside of the cabinet 10 through the first suction port 11 into the cooling chamber 17, and also passes through the evaporator 34 to the second internal duct 22, the air outlet 14, the air outlet 20, and the upper air outlet 21. It flows out into the luggage compartment 91 through the passage. Here, the air in the airflow is cooled by the evaporator 34, and the cooled air is blown out from the upper blow-off port 21 of the blow-off tube 20 into the cargo compartment 91. Since this upper blow-off port 21 is oriented diagonally rearward and upward at the upper end of the blow-off pipe 20, the cooling air easily spreads and diffuses inside the cargo space 91. Therefore, temperature unevenness within the luggage compartment 91 can be suppressed.

The condenser 32 is housed below the first internal duct 19 in the heat radiation chamber 18 and faces the second suction port 12 in the depth direction of the cabinet 10 . A condenser fan 35 such as a propeller fan is attached to the upper part of the condenser 32 so as to face the opening 19a of the first internal duct 19. Driving power for the condenser fan 35 is supplied from the sub-battery, thereby operating the condenser fan 35 to generate airflow. The air in the airflow flows from outside the cabinet 10 through the second suction port 12 into the heat dissipation chamber 18 and passes through the condenser 32. The air in the airflow and the refrigerant in the condenser 32 exchange heat with the condenser 32, and the air in the airflow is discharged to the outside of the vehicle through the first internal duct 19, the exhaust port 15, the heat exhaust duct 25, and the ventilation duct 99. Therefore, heat can be exhausted to the outside of the vehicle. Since the ventilation duct 99 already installed in the vehicle 90 is used to exhaust heat, processing of the vehicle 90 can be minimized when installing the vehicle-mounted electric temperature control device 1 in the vehicle 90.

Since the condenser fan 35 is provided in the opening 19a of the first internal duct 19, the air exhausted by the condenser 32 is efficiently sent to the heat exhaust duct 25 without going around to an unnecessary location. Therefore, heat exhaust efficiency is good.

[4] Electric Heater The electric heater 50 is provided in the path of the airflow caused by the evaporator fan 36, and specifically, provided in the lower part of the blow-off cylinder 20. The electric heater 50 is, for example, a PTC (Positive Temperature Coefficient) heater. Driving power for the electric heater 50 is supplied from a sub-battery. When a current flows through the electric heater 50, the electric heater 50 generates heat to maintain a constant temperature due to its positive temperature characteristics.

Electric heater 50 and electric compressor 31 are selectively driven. During operation of the refrigeration cycle 30, that is, when refrigerant is being circulated by the electric compressor 31, no current flows through the electric heater 50, and the electric heater 50 does not generate heat. On the other hand, if the temperature of the luggage compartment 91 is lower than the set temperature, the electric compressor 31 is stopped and current flows to the electric heater 50, causing the electric heater 50 to generate heat. At this time, the evaporator fan 36 operates without stopping. The air flowing from the first suction port 11 to the blowout tube 20 via the electric heater 50 is heated by the electric heater 50, and the warmed air is blown out from the upper blowout port 21. Therefore, the luggage compartment 91 is quickly warmed, and the temperature of the luggage compartment 91 reaches the set temperature and is maintained at the set temperature.

[5] Control Unit The control unit 55 is provided between the evaporator 34 and the electric compressor 31 in the cooling chamber 17. The control unit 55 receives a detected temperature signal from a temperature sensor (not shown) that detects the temperature inside the luggage compartment 91 . The control unit 55 controls the electric compressor 31, the condenser fan 35, the evaporator fan 36, the air cooling fan 37, and the electric heater 50 based on the detected temperature input from the temperature sensor, thereby adjusting the temperature of the cargo compartment 91 to the set temperature. is maintained.

For example, when the temperature detected by the temperature sensor exceeds the set temperature, the control unit 55 operates the electric compressor 31, condenser fan 35, evaporator fan 36, and air cooling fan 37 with high power, and also reduces the electric power of the electric heater 50. Cut off. When the temperature detected by the temperature sensor is the set temperature, the control unit 55 operates the electric compressor 31, condenser fan 35, evaporator fan 36, and air cooling fan 37 with low power, and cuts off the electric power to the electric heater 50. . When the temperature detected by the temperature sensor is lower than the set temperature, the control unit 55 stops the electric compressor 31, condenser fan 35, and air cooling fan 37, operates the evaporator fan 36, and energizes the electric heater 50.

[6] Advantageous Effects (1) Precisely because the electric compressor 31 is electric, the electric compressor 31 can be separated from the engine and the in-vehicle electric temperature control device 1 can be installed inside the vehicle.

(2) Since the refrigeration cycle 30 is constructed in advance and housed in the cabinet 10, not only a person who is qualified to handle refrigerants but also a person who is qualified for normal vehicle maintenance can retrofit the in-vehicle electric temperature control device 1 to the vehicle compartment. can do.

(3) Since the in-vehicle electric temperature control device 1 is installed inside the vehicle, the length, height, and width of the vehicle 90 are not expanded, and the vehicle 90 is subject to the length restriction, vehicle height restriction, and vehicle width. Not subject to restrictions.

(4) The high-temperature air that has been heat exchanged by the condenser 32 is discharged to the outside of the vehicle through the heat exhaust duct 25 and the ventilation duct 99. Since the ventilation duct 99 is already installed in the vehicle, processing of the vehicle 90 can be minimized when installing the vehicle-mounted electric temperature control device 1 in the vehicle 90.

(5) Since the flow path from the condenser 32 to the heat exhaust duct 25 is formed by the first internal duct 19, the air in the heat radiation chamber 18 that has passed through the condenser 32 does not go around to unnecessary locations. Therefore, the heat that has passed through the condenser 32 is efficiently exhausted.

(6) Since the condenser 32, evaporator 34, and electric compressor 31 are arranged in the vehicle width direction, the dimensions of the cabinet 10 in the vehicle width direction are lengthened, and the dimensions of the cabinet 10 in the vehicle height direction and vehicle length direction are shortened. can do. Therefore, even if the vehicle-mounted electric temperature control device 1 is installed in the space below the back of the front seat 94, the vehicle-mounted electric temperature control device 1 does not give a feeling of pressure to the occupant.

(7) Since the blow-off tube 20 is provided in an upright position and the upper blow-off port 21 is formed at the upper end of the blow-off tube 20, the cooling air can easily spread into the cargo space 91.

(8) Since the blowout tube 20 is arranged behind the position between the front seats 94, even if the backrest of the front seat 94 tilts backward, the backrest does not hit the blowout tube 20.

(9) When the temperature of the luggage compartment 91 is low, the electric heater 50 generates heat, so that the luggage compartment 91 can be maintained at the set temperature.

1... Vehicle-mounted electric temperature control device 10... Cabinet 11... First suction port 12... Second suction port 13... Third suction port 14... Air outlet 15... Exhaust port 16... Partition wall 17... Cooling room 18... Heat radiation chamber 19 ...First internal duct 20...Blowout pipe 21...Upper blowout port 23...Blowout duct 25...Exhaust heat duct 30...Refrigerating cycle 31...Electric compressor 32...Condenser 33...Expansion valve 34...Evaporator 35...Condenser fan 36...Evaporator fan 50 …Electric heater 90…Vehicle 91…Luggage space 94…Front seat 99…Ventilation duct

Claims (6)

Electric compressor, evaporator, expansion valve and condenser,
A cabinet installed in a vehicle interior and having an internal space in which the electric compressor, the evaporator, the expansion valve, and the condenser are housed;
an evaporator fan that is housed in the internal space of the cabinet and generates an airflow that flows into the internal space of the cabinet from outside the cabinet and flows out of the cabinet via the evaporator;
a condenser fan that is housed in an internal space of the cabinet and generates an airflow that flows into the internal space of the cabinet from outside the cabinet and flows out of the cabinet via the condenser;
a partition wall provided in the internal space of the cabinet and dividing the internal space of the cabinet into a cooling chamber and a heat radiation chamber;
Equipped with
The cabinet is installed on the floor behind the driver's seat and passenger seat of the vehicle,
The condenser, the evaporator, and the electric compressor are arranged in the width direction of the vehicle,
The electric compressor, the evaporator, and the evaporator fan are housed in the cooling chamber, the evaporator fan is attached to the evaporator, and a first inlet and an outlet are formed in the cabinet so as to communicate with the cooling chamber,
In-vehicle electric temperature management, wherein the condenser and the condenser fan are housed in the heat dissipation chamber, the condenser fan is attached to the condenser, and a second suction port and an exhaust port are formed in the cabinet so as to communicate with the heat dissipation chamber. Device. The vehicle-mounted electric temperature control device according to claim 1, further comprising a heat exhaust duct connected between an internal space of the cabinet and a ventilation duct already installed in the vehicle so as to communicate from the vehicle interior to the exterior of the vehicle. . The vehicle-mounted electric temperature control device according to claim 2, further comprising an internal duct that is accommodated in an internal space of the cabinet and forms a flow path from the condenser to the heat exhaust duct. further comprising a blow-off duct protruding from the evaporator to the outside of the cabinet,
Claims 1 to 3 , wherein the cabinet is installed on a floor in the vehicle interior, the blow-off duct is provided in an upright position against the upper surface of the cabinet, and a blow-off port is formed at the upper end of the blow-off duct. The in-vehicle electric temperature control device according to any one of the above. The in-vehicle device according to claim 4 , wherein the cabinet is installed on a floor behind a driver's seat and a passenger seat of the vehicle, and the blow-off duct is arranged behind a position between the driver's seat and the passenger seat. Electric temperature control device. The vehicle-mounted electric temperature control device according to any one of claims 1 to 5 , further comprising an electric heater provided in a path of airflow by the evaporator fan.

Images