JPH0899522A - Multiple chamber temperature control device for vehicle - Google Patents

Abstract

PURPOSE: To provide such a multiple chamber temperature control device for a vehicle that can carry small-quantity but many kinds of loads efficiently and automatically perform cooling and heating control for every storage space. CONSTITUTION: Unit fan 8a, 8b, evaporators 9a, 9b, and heater cores 10a, 10b are stored and distributed in a unit case according to storage spaces, respective evaporators are connected parallel to the common compressor 15, and flow rate of cooling medium is regulated by solenoid valves 18a, 18b. Respective heater cores 10a, 10b are connected in series so as to use a hot heat supply source jointly, bypass routes 29a, 29b for bypassing the heater cores are provided, and flow rates of respective heater cores and bypass routes are regulated by three-way valves 31a, 31b. Cooling and heating capacities can be combined arbitrarily in respective storage spaces so that temperature control individual to respective storage spaces can be achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-chamber temperature control device used in a vehicle such as a refrigerating vehicle that carries a load in a predetermined temperature control state.

[0002]

2. Description of the Related Art As a vehicle for carrying a load, a vehicle disclosed in, for example, Japanese Patent Laid-Open No. 145517/1983 is known. This forms a cooling unit with a cooling heat exchanger of a cooling cycle and a blower that blows the air heat-exchanged by the cooling heat exchanger into the air-conditioned space,
Independently of this, a warming heat exchanger that uses engine cooling water as a heat source and a blower that blows the air that has undergone heat exchange in this warming heat exchanger into the air-conditioned space form a warming unit. Then, each of these units is arranged in a storage box so that the cooling unit has a heating function.

[0003]

However, in the above-mentioned structure, the structure is designed on the assumption that there is only one storage box in one vehicle, and when carrying a large amount of the same load. There is no problem if there are many kinds of loads, especially if you want to carry small amounts of loads with different temperature control, if there is only one storage space as in the past, even if it is a small amount However, there is a problem that the transportation efficiency is deteriorated because there is no choice but to transport it to the other side.

Further, since the cooling unit and the heating unit are provided independently, a lot of space is required, and switching between cooling and heating is manually controlled by turning on / off the solenoid valve. Therefore, in the case of constant temperature control of the load in the middle of spring or autumn, it has to rely on the switching control based on the judgment of the driver, and there is a drawback that the constant temperature control cannot be performed well.

Therefore, an object of the present invention is to provide a multi-room temperature control device for a vehicle, which can cope with a situation of efficiently carrying a small amount of various kinds of loads. Another issue is to implement a constant temperature control regardless of the season by incorporating a heating function in the cooling unit and automatically performing cooling and heating control.

[0006]

SUMMARY OF THE INVENTION A vehicle multi-room temperature control system according to the present invention has a plurality of storages.
In each of the storages, a unit fan, an evaporator forming a part of a cooling cycle, and a heater core forming a part of a heating cycle are housed in a unit case and arranged. The evaporators are connected in parallel so as to communicate with a common compressor to configure the cooling cycle, and the heater cores provided in each of the storages are connected in series to share a common heat supply source to configure the heating cycle. The heating cycle has a flow path that bypasses the heater core, and includes a first valve that changes the flow rate of the cooling medium that flows into each evaporator, and a flow rate of the heating medium that flows into each heater core. And a second valve for changing the ratio with respect to the flow rate of the heating medium that bypasses the heater core. 1).

Here, a solenoid valve for adjusting the flow rate for each evaporator is used as the first valve (claim 2), and a three-way valve for adjusting the flow rate for each heater core is used as the second valve. A configuration (claim 3) is conceivable.

Further, for each storage, a suction temperature detection sensor for detecting the temperature of the air sucked into the unit case, an outlet temperature detection sensor for detecting the temperature of the air blown out from the unit case, and a temperature of the storage A temperature setting device for setting the target temperature of the air blown into the storage on the basis of the suction temperature detected by the suction temperature detection sensor and the set temperature set by the temperature setting device. And a second valve based on the suction temperature detected by the suction temperature detection sensor and the set temperature set by the temperature setter until the suction temperature converges within a predetermined set temperature range. Is fully opened or fully closed, and if the suction temperature converges within a predetermined set temperature range,
It is desirable to include a valve opening degree control means for adjusting the opening degree of the second valve so that the blowout temperature detected by the blowout temperature sensor converges to the target temperature (claim 4).

[0009]

Therefore, according to the first to third aspects of the present invention, the evaporators of the storages are provided in parallel in the cooling cycle system so that the refrigerant can be supplied from the common compressor, and the evaporators are provided by the first valve. The amount of refrigerant supplied to the cylinder is adjusted. Further, the heater cores of the respective storages are provided in series in the heating cycle system so that the heating medium can be supplied from the common heat source, and the second valve regulates the supply amount of the heating medium to each heater core. To be done. In this way, the cooling capacity and the heating capacity can be arbitrarily combined for each storage by operating the first or second valve, and independent temperature control can be performed for each storage. Therefore, The above object can be achieved.

According to the fourth aspect of the present invention, with respect to the temperature control of each storage case, the flow of the heating medium into the heater core does not flow until the suction temperature converges within a predetermined set temperature range. Is adjusted by opening or closing
The suction temperature quickly approaches the set temperature. Then, when the intake temperature converges within a predetermined set temperature range, the valve opening is adjusted so that the outlet temperature detected by the outlet temperature sensor converges to the target outlet temperature calculated by the target outlet temperature calculating means. The flow rate into the heater core is controlled. In this way, in the latter stage when the suction temperature converges to the set temperature, the outlet temperature is also made to converge to the target temperature, so that the variation in the temperature distribution of the temperature-controlled space is suppressed as much as possible.
The temperature of the temperature controlled space can be kept constant.

[0011]

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

In FIG. 1, a vehicle multi-room temperature control system divides a vehicle compartment 1 into two compartments, for example, a front compartment 2 and a rear compartment 3, and each compartment has a cooling unit with a heating function. 4a and 4b are arranged. Since the configuration on the front storage side and the configuration on the rear storage side are the same in this embodiment, when the same component is represented on the front storage side, the subscript a is added to the number and the rear storage side is indicated. When the component on the side is represented, the subscript b is added to the number.

The cooling units 4a and 4b are fixedly installed, for example, on the front side of the ceiling 6 of each storage case, and as shown in FIGS. 2 and 3, the most upstream part in the unit case 7a (7b). The unit fan 8a (8b) is disposed in the rear of the evaporator 9a (9b) on the downstream side, and the heater core 10a (10b) on the downstream side of the evaporator 9a (9b).
Are arranged, the temperature of the air sucked from the unit fan 8a (8b) is adjusted by the evaporator 9a (9b) and the heater core 10a (10b), and the air is discharged from the air outlet 11a (11b) provided at the most downstream portion. It is designed to blow air inside.

The unit fan 8a (8b) is the motor 1
A sirocco fan 13a is provided on both ends of the drive shaft 2a (12b).
A twin type in which (13b) is connected, two of which are arranged along the wind-in side end surface of the evaporator 9a (9b), and the air in the refrigerator is sucked by the rotation of the motor 12a (12b). The air is blown to the evaporator 9a (9b).

The evaporator 9a on the front storage side has an accumulator 14 and a compressor 1 as shown in FIG.
5, the condenser 16, the liquid tank 17, the solenoid valve 18a, and the expansion valve 19a are sequentially pipe-connected to form a cooling cycle on the front storage side, and the evaporator 9b on the rear storage side includes the accumulator 14, the compressor 15, and the compressor 15. Condenser 16 and liquid tank 17
Common to the solenoid valve 18b and the expansion valve 19
The pipes are sequentially connected together with b to form a rear storage side cooling cycle. Therefore, the series path of the solenoid valve 18a, the expansion valve 19a, and the evaporator 9a and the series path of the solenoid valve 18b, the expansion valve 19b, and the evaporator 9b are common to the accumulator 14, the compressor 15, the condenser 16, and the liquid tank 17. It is configured to be connected in parallel to the path.

However, when air is sent by the unit fan to the evaporator on the path where the compressor 15 operates and the solenoid valve is open, this air is cooled when passing through it. That is, if the compressor 15 is operating (ON), the compressor 15
The refrigerant discharged from the condenser 16 is radiated by the condenser 16 to be condensed and liquefied, and after the gas-liquid separation in the liquid tank 17, the expansion valves 19a and 19b on the path where the solenoid valves 18a and 18b are opened become low-temperature low-pressure refrigerant, The evaporators 9a and 9b absorb heat from the air passing therethrough and evaporate and vaporize.

In addition, in a portion facing the capacitor 16,
A condenser fan 22 that cools the condenser 16 is provided.

The heater core 10a (10b) reheats all the air that has passed through the evaporator 9a (9b), and uses the cooling water of the engine 25 as a heat source. The circulation route of the engine cooling water includes a water pump 26 that pumps the cooling water from the engine 25, a pre-heater 27 that heats the cooling water that is pumped, a heater core 10b arranged in a cooling unit on the rear storage side, and a front storage chamber. The heater core 10a arranged in the cooling unit on the side and the heater core 28 arranged in the cabin are sequentially connected by piping. Bypass passages 29a and 29b for bypassing the heater cores 10a and 10b are further provided in this circulation path, and cooling water flowing to the heater core side and the bypass passage 29 are provided at upstream branch points of the bypass passages 29a and 29b.
3-way valve 3 for adjusting the ratio with the cooling water flowing through a and 29b
1a and 31b are provided.

FIG. 6 shows a concrete example of the construction of the three-way valves 31a and 31b. The three-way valves 31a and 31b are provided with an inflow port 33 into which cooling water flows and a heater core connected to a passage on the heater core side. Side outflow port 34 and bypass passage 2
Bypass side outflow port 35 connected to 9a or 29b
And a valve body 36 is provided at a portion where the heater core side outflow port 34 and the bypass side outflow port 35 are separated. The valve body 22 is connected to, for example, a rod 37 of a three-way valve opening adjustment actuator so as to be movable in the extending direction of the heater core side outflow port 34, and is located near the branch point of the heater core side outflow port 34. By contacting the formed valve seat portion 38, the outflow port can be completely closed, and if it is farthest from the valve seat portion 38, the bypass side outflow port 35 can be completely closed by the side surface of the valve element 36. There is. Then, from the state of the opening degree of 0% in which the heater core side outflow port 34 is closed and only the bypass side outflow port 35 is opened, the opening degree 100 in which the bypass side outflow port 35 is closed and only the heater core side outflow port 34 is opened. The valve opening can be continuously adjusted depending on the state of%.

Further, as shown in FIG. 3, a suction temperature detection sensor 32a (32b) for detecting the temperature of the air sucked into the unit is provided at the air inlet 30a (30b) of the unit fan 8a (8b). Further, in the vicinity of the outlet 11a (11b) of the refrigeration unit 4a (4b), an outlet temperature detection sensor 33a (33b) for detecting the temperature of the air blown out from the unit 4a (5) is provided. As shown in FIG. 7, the detection signal from the temperature sensor is sent to the front seat side control unit 35 if it corresponds to the front seat side, and to the rear seat side control unit 36 if it corresponds to the rear seat side. It is supposed to be entered.

The control unit 35 (36) is A
I / D converter, input circuit including multiplexer, timer, ROM, RAM, arithmetic processing circuit including CPU, I
A well-known device having an output circuit including an I / O port and the like, which operates the refrigeration unit of each storage in addition to the input signals from the suction temperature detection sensor 32a (32b) and the outlet temperature detection sensor 33a (33b). Operation panel 40a (40
The signal from b) is also input.

Here, the operation panel 40a (40b) is
What is shown in FIG. 4 is provided for each storage, and an operation switch 41 for operating and stopping the refrigeration unit, an operation display LED 42 that lights up when the operation switch is turned on, a defrost mode (DEF mode) and a display switching mode for the display. (METP mode), a metallurgical switch 43 that allows selective designation, a defrost LED 44 that lights up in the DEF mode, a three-digit digital display unit 45, and an ALM / that lights or blinks during an alarm or when the display of the digital display unit is switched. DISP_LED46, the temperature in the refrigerator is 23 ~
The temperature setting device 47 is set in the range of 86 ° F (-5 to 30 ° C).

Further, the control unit 35 (36)
7, an ON mode in which the engine is operated by operating the engine key, an ACC mode in which the peripheral device and the battery power supply are connected although the engine itself is stopped, and a battery power supply Signal from engine switch 50 to switch to OFF mode where connection is cut off, dehumidifying release thermostat 51a (51b)
Signal from the potentiometer 52a (52b) for detecting the opening degree of the three-way valve, the pressure switch 53a (5
3b), signals from the switch 54 for forcibly and fully opening the three-way valves on the front storage compartment side and the rear storage compartment side, etc. are also input, and these various signals are arithmetically processed according to a predetermined program to drive the drive circuit. Through the solenoid valve 18
Opening and closing (ON / OFF) of a and 18b, compressor 15
On / off of the fan, on / off of the condenser fan 22, blowing capacity of the unit fans 8a and 8b, the water pump 2
6 is controlled, and the actuator 55a (55b) for moving the three-way valves 31a, 31b is controlled.

In addition, the vehicle multi-room temperature control system has a preheater control unit 56 in addition to the control unit 35 (36), and the preheater control unit 56 has an engine switch 50.
The ON mode signal or the ACC mode signal from the
The signals from the inlet water temperature detection sensor 58 of the preheater are input, these signals are processed according to a predetermined program,
The preheater 27 is automatically operated.

Since the control operations by the control units 35 and 36 are the same, only a specific control operation example on the front storage side will be described. In the flowchart shown in FIG.
, The difference (ΔT =) between the suction temperature (T _SUC ) and the set temperature (T _PTC ) under the condition that the refrigeration unit 4 is operating.
Calculate T _SUC −T _PTC ). Based on this difference, the compressor 15 is on / off controlled in step 62, the condenser fan 22 is on / off controlled in step 64, and the unit fan 8a is controlled in step 66.
Is controlled, the water pump 26 is turned on / off in step 68, and the opening degree of the three-way valve 32 is controlled in step 70.

More specifically, as shown in FIG. 9, in the compressor 15, the difference (ΔT = T _SUC -T _PTC ) between the suction temperature and the set temperature is, for example, +1.
When the temperature is higher than ° C, it is turned on, and when the temperature is 0 ° C or lower, it is turned on. In the condenser fan 22, for example, when ΔT is + 1 ° C or more, it is turned on, and when it is 0 ° C or less, it is turned on. In the unit fan 8a, for example, ΔT =
At 0 ° C, high speed rotation (HI) to low speed rotation (LO)
W) and | ΔT | ≧ 1.5 ° C., the low speed rotation (LOW) changes to the high speed rotation (HI). Further, in the water pump 26, for example, when the 3-way valve opening is 0%, it is turned on, and when the 3-way valve opening is 5% or more, it is turned on.

The details of the opening control of the three-way valve 31a are shown in FIG. 10, and in step 702, | ΔT = T
It is determined whether or not _SUC - _TPTC | is a predetermined value α or less (for example, 3 ° C or less), and it is determined whether or not the suction temperature has converged to the set temperature to some extent. If it is determined in this step 702 that | ΔT | ≦ 3 ° C.,
In step 704, the target blowout temperature (X _M ) blown into the freezer is calculated. The target outlet temperature (X _M ) can be calculated by various methods.
Formula 1 from the suction temperature (T _SUC ) and the set temperature (T _PTC ).
It is desirable to calculate based on

[0028]

[Formula 1] X _M = T _PTC −ΔT−Σβ * ΔT

Here, β is an arithmetic constant preset in the experiment.

After the target outlet temperature (X _M ) is calculated, the routine proceeds to step 706, where the outlet temperature detecting sensor 3
The opening degree of the three-way valve 31a for converging the blowout temperature (T _BLOW ) detected in 3a to the target blowout temperature (X _M ) is calculated by proportional integral control (PI control). Note that the PI control is a well-known method, and a description thereof will be omitted.

In summary, until the suction temperature converges within a predetermined set temperature range (within ± 3 degrees with respect to the set temperature), temperature control (suction control) that reduces the difference between the suction temperature and the set temperature. Control) is performed. That is, when the suction temperature is significantly higher than the set temperature, it is necessary to quickly cool the inside of the freezer toward the set temperature. Therefore, the compressor 15, the condenser fan 22, and the unit fan 8a are turned on, and the solenoid valve 18a is turned on. When it is opened, cooling of the air by the evaporator 9a is promoted, the water pump 26 is turned off, and all the cooling water is bypassed by the bypass passage 29.
Then, the heater core 10a in the refrigeration unit 4a is not heated. Further, when the suction temperature is significantly lower than the set temperature, it is necessary to quickly warm the inside of the freezer toward the set temperature. Therefore, the solenoid valve 18a is closed to stop the refrigerant circulation in the front seat side cooling cycle. The cooling of the air in the evaporator 9a is stopped, the opening degree of the three-way valve 31a is adjusted so that all the engine cooling water is guided to the heater core 10a, the water pump 26 is turned on, and the air guided into the refrigeration unit 4a is removed. Warm.

When the suction temperature converges within a set temperature range, stable control (blowout control) is performed so that the blowout temperature also converges to the target temperature. That is, the opening temperature of the three-way valve 32 is PI-controlled so that the deviation of the blowout temperature from the target temperature approaches zero by feeding back the blowout temperature.

As a result, the suction temperature is made to converge to the set temperature and the blowout temperature is made to converge to the target temperature, so that it is possible to suppress variations in temperature distribution in the refrigerator regardless of the season.

Now, suppose that the temperature inside the refrigerator is 30 ° C. when the engine switch 50 is OFF and the refrigerator is not used, and the freezing operation is performed with the set temperature set to 18 ° C. As shown in FIG. 11, the engine switch 50 is turned on, and the operation switch 41 of the refrigeration unit is further turned on.
When turned on, the operation display LED4 on the operation panel 40a
2 lights up (ON) and the compressor 15 operates (ON)
Then, the condenser fan 22 rotates (ON), and the unit fan 8a rotates at high speed (HI). In the initial stage of such a freezing operation, it is not necessary to supply the heating medium to the heater core 10a due to the request for quick cooling, and the water pump 26 maintains the OFF state.

When the inside of the refrigerator is cooled rapidly and the temperature of the inside of the refrigerator is within the range of the set value (18 ° C) ± 3 ° C, the suction control is changed to the blowout control, and the opening degree of the three-way valve 32 is changed. Is more than 5%, the water pump 26 operates (ON), but the operating states of the compressor 15, the fan, etc., are determined by the difference between the suction temperature and the set value, as shown in FIG. When the suction temperature drops to the set value (18 ° C), as is clear from point C in Fig. 11,
The compressor 15 stops and the condenser fan 22 turns off.
The FF and the unit fan 8a are LOW. Even at this time, if the opening degree of the three-way valve 32 is 5% or more, the water pump 26 continues to be turned on. When the ventilation capacity of the compressor 15 and the fan is reduced and the cooling capacity is reduced, the suction temperature gradually rises, and when the temperature rises 1.0 ° C or more above the set temperature, the compressor 15 is turned on and the condenser fan 22 is also turned on. When the suction temperature becomes higher than the set temperature by 1.5 ° C. or more, the unit fan 8a becomes HI.

In FIG. 11, the engine switch is turned off when the difference between the suction temperature and the set temperature is within 1 ° C. (point D).
a is also turned off, and the difference between the suction temperature and the set temperature is 1.0 °.
Since the engine switch was turned on again at the point E which became larger than C, the compressor 15 and the condenser fan 22 were turned on from that point, and the unit fan 2
2 is also starting to rotate with HI. Also, if the engine switch is left in the ACC mode from ON, the compressor 15 and the condenser fan 22 are turned OFF.
However, the unit fan 8a continues to be driven LOW for 5 minutes from the time when ACC is set.

On the other hand, an example in which the temperature inside the refrigerator is 0 ° C when the engine key is OFF and the set temperature is set to 18 ° C when the engine key is OFF Are shown in FIG.

When the engine key is turned on and the operation switch 41 of the refrigeration unit 4a is further turned on, the operation display LED 42 of the operation panel 40a is turned on (ON), the compressor 15 is operated (ON), and the condenser fan 22 is rotated. (ON), and the unit fan 8a rotates at high speed (HI). At the beginning of such a freezing operation, the compressor 15 and the condenser fan 2 are required due to the demand for quick heating.
It is not necessary to operate 2 and both are turned off. In this state, the water pump 26 is ON, the unit fan 8a is rotated by HI, and the heater core 10a is rotated.
The air heated by is supplied into the refrigerator.

When the inside of the refrigerator is rapidly heated and the temperature of the inside of the refrigerator is within the range of the set value (18 ° C) ± 3 ° C, the suction control is switched to the blowout control, and the compressor 15 and the condenser fan 22 are operated. Is still OFF, but the opening degree of the water pump 26 and the three-way valve are as shown in FIG.
It is determined by the difference between the suction temperature and the set value. When the suction temperature rises to the set value (18 ° C), the unit fan 8a becomes LOW, as is apparent from point F in FIG. Suction temperature is 1 ° below the set value
Unless it becomes higher than C, the compressor 15 and the condenser fan 22 are not turned on. Unit fan 8a is L
When it becomes OW and the heating capacity is lowered, the suction temperature is gradually lowered, and when it becomes lower than the set temperature by 1.5 ° C. or more, the unit fan 8a becomes HI.

In FIG. 12, the engine key is turned off when the difference between the suction temperature and the set temperature is less than ± 1 ° C (point G), so the unit fan 8a
Is turned off, and the difference between the suction temperature and the set temperature is -1.5 °.
Since the engine key is turned on again when the temperature becomes C or higher (point H), the unit fan 8a starts to rotate at HI again. If the engine switch 50 is left in the ACC mode from ON, the ACC
From then, the unit fan 8a continues to be driven LOW for 5 minutes.

The above-described control is similarly performed in the refrigerating unit 4b on the rear storage side, but according to the present application, the compressor etc. in the cooling cycle is connected to the front storage side and the rear storage side. Therefore, if there is a request to cool either one of the storages, the compressor 15 in the cooling cycle is activated, and the solenoid valves 18a and 18b and the three-way valve 3 are used.
Even if there is a request to cool one of the storages by operating with 1a and 31b, the other storage can be heated, and if a preset temperature is adjusted for each storage, a desired temperature control state can be obtained. It can be automatically formed for each storage.

[0042]

As described above, according to the inventions according to claims 1 to 3, the refrigerant supply amount to the evaporator can be changed for each storage by operating the first valve and the second valve, and the heater core can be changed. Since it is possible to control the temperature of the heat medium to be supplied independently by varying the amount of heat medium supplied to the storage medium, it is possible to efficiently transport a small amount of various types of cargo by dividing the cargo into storage bins for each type.

According to the fourth aspect of the invention, while the suction temperature converges to the set temperature, when the suction temperature converges within the predetermined set temperature range, the opening degree of the valve is varied to blow out the air. Since the temperature is made to converge to the target outlet temperature, variations in the temperature distribution of the temperature controlled space are automatically suppressed, and the temperature of the temperature controlled space can be kept constant regardless of the season.

[Brief description of drawings]

FIG. 1 is a perspective view showing a vehicle equipped with a multi-chamber temperature control device according to the present invention.

FIG. 2 is a plan sectional view showing a schematic configuration of a refrigeration unit used in the multi-room temperature control device according to the present invention.

FIG. 3 is a side sectional view showing a schematic configuration of the refrigeration unit shown in FIG.

FIG. 4 is a front view showing an operation panel of the refrigeration unit of each storage.

FIG. 5 is a diagram showing a schematic configuration of a vehicle multi-room temperature management device.

FIG. 6 is a cross-sectional view showing a three-way valve used in the vehicle multi-room temperature control system.

FIG. 7 (a) is a diagram showing an input / output signal configuration of a control unit provided for each refrigeration unit, and FIG. 7 (b) is an input / output signal configuration of a control unit for a preheater. FIG.

FIG. 8 is a flowchart showing a control operation example for controlling the temperature of one storage case.

FIG. 9 is a characteristic diagram showing an example of control operation of each component of the vehicle multi-room temperature control device.

FIG. 10 is a flowchart showing an example of control operation of a three-way valve used in the vehicle multi-room temperature control device.

FIG. 11 is a time chart showing an example of a case where a single storage is frozen.

FIG. 12 is a time chart showing an example of a case where one storage is operated for warming.

[Explanation of symbols]

 2 front storage 3 rear storage 4a, 4b refrigeration unit 7a, 7b unit case 8a, 8b unit fan 9a, 9b evaporator 10a, 10b heater core 15 compressor 18a, 18b solenoid valve 27 preheater 29a, 29b bypass passage 31a, 31b three-way Valves 32a, 32b Suction temperature detection sensor 33a, 33b Outlet temperature detection sensor 47 Temperature setter

Claims (4)

[Claims] 1. A plurality of storages, each of which stores a unit fan, an evaporator forming a part of a cooling cycle, and a heater core forming a part of a heating cycle in a unit case. The evaporators provided in the storages are connected in parallel to communicate with a common compressor to form the cooling cycle, and the heater cores provided in the storages share a common heat source. And the first valve that is connected in series to configure the heating cycle, the heating cycle includes a flow path that bypasses the heater core, and that changes the flow rate of the cooling medium flowing into each evaporator. A second valve for varying the ratio of the flow rate of the heating medium flowing into each heater core and the flow rate of the heating medium bypassing the heater core A multi-room temperature control device for a vehicle, comprising: 2. The multi-room temperature control device for a vehicle according to claim 1, wherein the first valve is a solenoid valve that adjusts a flow rate for each evaporator. 3. The multi-room temperature control device for a vehicle according to claim 1, wherein the second valve is a three-way valve for adjusting a flow rate ratio for each heater core. 4. A suction temperature detection sensor for detecting a temperature of air sucked into a unit case, a blowout temperature detection sensor for detecting a temperature of air blown out from the unit case, and a temperature of the storage case for each storage case. A temperature setting device for setting the target temperature of the air blown into the storage on the basis of the suction temperature detected by the suction temperature detection sensor and the set temperature set by the temperature setting device. And a second valve based on the suction temperature detected by the suction temperature detection sensor and the set temperature set by the temperature setter until the suction temperature converges within a predetermined set temperature range. When the suction temperature converges within a predetermined set temperature range, the blowout temperature detected by the blowout temperature sensor converges to the target temperature. 2. The vehicle multi-room temperature control device according to claim 1, further comprising a valve opening control means for adjusting the opening of the second valve.