JPH10175425A - Chilling unit for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly detect a room temperature without receiving an influence of cold air of a cooling unit even by setting up a temperature sensor in the cooling unit, in a chilling unit for a vehicle having a heat regeneration cooler. SOLUTION: In a cooling unit 5, in a location in the vicinity of a suction port 6 sucking air in a napping room, a temperature sensor 16 detecting a temperature of suction air to the suction port 6 is arranged, also a cold air cutoff wall 17 cutting off cooled air in a heat regeneration pack 55 leading to this temperature sensor 16 is provided, by a control device, in accordance with a detection signal of the temperature sensor 16, an operating speed of a blower 9 is switching controlled by stages, so as to control a temperature of a napping room. In this way, even by providing the temperature sensor 16 in the cooling unit 5, cold air leading to the temperature sensor 16 is interrupted by the cold air cutoff wall 17, a room temperature can be properly detected, so that temperature control of the napping room can be well performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle cooling system for cooling a nap room of a vehicle (for example, a truck).

[0002]

2. Description of the Related Art Conventionally, as a cooling device for cooling a nap room of a vehicle, there is known a device described in Japanese Patent Application Laid-Open No. 62-149509. A nap room partitioned by a partition member such as a curtain is formed, and a nap bed is arranged in the nap room.

[0003] A cooling unit is disposed on the rear wall surface of the nap room, and the cooling unit has a suction port at a lower portion thereof, an air outlet at an upper portion thereof, and a regenerative storage type therein. A cooler and a blower are provided. The regenerative cooler is composed of a refrigerant evaporator provided in a refrigeration cycle for air conditioning of a vehicle and a regenerator material stored in the evaporator, and cools the regenerator material by the refrigerant evaporator during traveling of a truck. When the cold storage material is frozen and the driver naps in the nap room when the truck stops, the blower of the cooling unit is operated to blow air into the ventilation path of the cold storage material portion, and the cold storage material and the blast air And heat exchange is performed between the cooling unit and the cooling air, and the cooled air is blown out from the outlet of the cooling unit into the nap room.

On the other hand, in order to control the room temperature in the nap room to the target temperature set by the napper, a temperature sensor for detecting the room temperature is provided in the room air suction side flow passage in the cooling unit. The operation of the blower is intermittently performed according to the detected temperature.

[0005]

However, in the above-mentioned conventional apparatus, since the temperature sensor for detecting the room temperature is provided in the cooling unit, when the blower is stopped (OFF), the cold storage material and the cool air of the unit itself are removed. Under the influence, the temperature sensor is cooled to a temperature below room temperature. Therefore, since the actual change in room temperature cannot be sensed due to the influence of the cold air, if the blower is temporarily stopped (OFF), the temperature sensor remains cooled to a low temperature equal to or lower than room temperature. The temperature detected by the temperature sensor does not rise to the temperature at which the temperature is returned. As a result, the blower remains stopped, so that the layout in which the temperature sensor is disposed in the cooling unit as in the above-described conventional apparatus cannot be put to practical use.

Therefore, the present inventors first disclosed in Japanese Patent Laid-Open No.
In Japanese Patent No. 258557, a temperature sensor for detecting the room temperature of a nap room is installed in a nap room at a position distant from the cooling unit so as not to be affected by cool air of the chill unit. There has been proposed a vehicle cooling device that can detect the room temperature of a nap room without being affected by the air conditioner.

According to this conventional apparatus, since the temperature sensor is not affected by the cool air of the cooling unit, if the room temperature rises by stopping the blower, the temperature sensor can detect this temperature rise. The blower can be returned to the operating state. However, when the present inventors actually made a prototype of this conventional device and examined the experiment, the futon used by the napper covered the temperature sensor, and the temperature sensor could not accurately detect the room temperature. It has been found that a problem often arises in that it is not possible to control the accuracy with high accuracy. In addition, since the temperature sensor is installed at a separate location away from the cooling unit, a dedicated mounting member for the temperature sensor and electric wiring to the nap room are required, resulting in an increase in cost.

[0008] The present invention has been made in view of the above points,
It is an object of the present invention to provide an air conditioner for a vehicle having a regenerative cooler, in which even if a temperature sensor is installed in a cooling unit, the room temperature can be accurately detected without being affected by cool air of the cooling unit.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, in the cooling unit (5), a portion near the suction port (6) for sucking the air in the nap room (3). A temperature detecting means (16) for detecting the temperature of the intake air to the suction port (6) is disposed at the same time.
5) A cool air shut-off means (17) for blocking the cool air cooled by the cooling means (54, 55) having the temperature detection means (16) from being reached, and the control means (42) controls the temperature detection means (16). ), The room temperature of the nap room (3) is controlled by controlling the operation of the blowing means (9) according to the detection signal.

According to this, even if the temperature detecting means (16) is provided in the cooling unit (5), the arrival of the cool air to the temperature detecting means (16) is cut off by the cold air shut-off means (17) so that the room temperature can be accurately adjusted. Since the detection can be performed, the room temperature control of the nap room (3) can be favorably performed. Moreover, the temperature detecting means (1
Since 6) is provided in the cooling unit (5), there is no need for a mounting member dedicated to the temperature sensor or electric wiring to the nap room.
Cost reduction can be realized.

The cool air shut-off means can be constituted by a cool air shut-off wall (17) disposed above the temperature detecting means (16) at a position inside the suction port (6). According to the third aspect of the present invention, an air purifying filter (18) for purifying air sucked from the suction port (6) is disposed inside the suction port (6) of the cooling unit (5) to cool the cooling unit. In the unit (5), a temperature detecting means (16) for detecting the temperature of the intake air to the intake port (6) is disposed at a position near the intake port (6) and upstream of the air cleaning filter (18) in the air. Then, the cool air cooled by the cooling means (54, 55) having the cold storage material (55) is cooled by the temperature detecting means (1).
6) is blocked by an air purifying filter (18), and the control means (42) controls the operation of the air blowing means (9) according to the detection signal of the temperature detecting means (16). It is characterized by controlling the room temperature of the nap room (3).

According to this, as in the case of the first aspect, the room temperature can be accurately detected to control the room temperature of the nap room (3) satisfactorily, and at the same time, the intake air can be purified. . The control means (42) may switch the operation speed of the air blowing means (9) in a stepwise manner according to the detection signal of the temperature detecting means (16).

According to the fifth aspect of the present invention, the control means (42) controls the operation speed of the blowing means (9) in accordance with a detection signal of the temperature detecting means (16), and a speed control mode. A stop mode for stopping (9). In this stop mode, after the blower means (9) is stopped for a predetermined time, the blower means (9) is turned on regardless of the detection signal of the temperature detection means (16). It is characterized by being forcibly activated for a predetermined time.

According to the fifth aspect of the present invention, by setting the stop mode for stopping the blower means (9), it is possible to reliably prevent excessive cooling even at a low outside temperature. Moreover,
After stopping the blowing means in the stop mode, the blowing means (9)
Is forcibly operated for a predetermined time irrespective of the detection signal of the temperature detecting means (16). Therefore, the temperature detecting means (16) is combined with the cooling air arrival blocking action to the temperature detecting means (16) and the forced operation of the air blowing means. 16) The detected temperature can be reliably brought close to room temperature in a short time. Therefore, even after the blower is temporarily stopped, the operation speed control of the blower (9) according to the room temperature can be satisfactorily performed again.

The reference numerals in parentheses of the above means indicate the correspondence with the specific means described in the embodiment described later.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. (First Embodiment) FIGS. 1 to 6 show a first embodiment in which the present invention is applied to a regenerative cooling device for a nap room for trucks. As shown in FIGS. In addition, a nap room 3 in which a bed 4 is provided is formed.
In the nap room 3, a cooling unit 5 is provided on a side wall 10 at one end in the vehicle width direction.

The cooling unit 5 has a vertically long and thin case 51 formed in a rectangular parallelepiped shape, and a suction port 6 for sucking air in the nap room 3 below the case 51.
Is provided. A lattice-shaped outlet 7 for blowing cool air toward a side wall (not shown) at the other end in the vehicle width direction is provided above the case 51. As shown in FIG. 3, an air flow path 52 communicating with the outlet 7 is formed in an upper portion inside the case 51. This air passage 5
2, a centrifugal blower (blower means) 9 driven by a motor (not shown) is arranged. A chamber 5 for installing a regenerative cooler is provided below the air passage 52.
3 are formed in a compartment, and a refrigerant evaporator 5 is
4 and a cool storage pack 55 are provided.

In this embodiment, the evaporator 54 is constituted by a multi-hole flat tube made of aluminum. This multi-hole flat tube has a width L (see FIG.
(Refer to (b))). It has a flat cross section having the same width dimension as that of (b), and a number of refrigerant passage holes are formed in parallel as is well known. The flat tube has bent portions at the upper and lower ends of FIG. 3, and is formed so as to meander in the vertical (vertical) direction.

A cold storage pack 55 is disposed so as to be in close contact with the left and right sides of the flat tube of the refrigerant evaporator 54. As shown in FIG. 3A, the cold storage pack 55 is formed in a vertically long uneven shape in the vertical direction, and water and water are contained in a thin-walled pack-like (bag-like) member formed of resin.
Alternatively, a soft gel-like cold storage material is sealed. The material of the pack 22 is preferably a material that is easily thinned, for example, nylon, polyethylene, or the like, in order to improve heat exchange with the blown air. The cooling means in the present invention,
It is composed of the refrigerant evaporator 54 and the cold storage pack 55.

In FIG. 3A, reference numeral 56 denotes an air passage formed between the cold storage pack 55 having an uneven shape and the flat tube of the refrigerant evaporator 54. The arrow A in FIG. 3B indicates the flow of air passing through the ventilation path 56. Also, in FIG. 1, arrow B indicates the cool air from the outlet 7, and arrow C indicates the flow of air in the nap room 3 sucked into the suction port 6.

Numeral 57 denotes an upper portion of the chamber 53, which is a communication port provided on the rear wall side of the case 51. The communication port communicates the upper portion of the chamber 53 with the suction side of the blower 9. The evaporator 54 and the cool storage pack 55 that constitute the cooler are installed in substantially the entire area in the width direction of the case 51 (the left-right direction in FIG. 3A).
Numeral 12 denotes a nap room cooling control panel, which is disposed adjacent to the side of the air outlet 7 at an upper portion of the front surface of the case 51 of the cooling unit 5 as shown in FIGS. This control panel 12
As shown in FIG. 4, the air conditioner is provided with a blower operation switch (nap cooling switch) 13, a temperature adjustment switch 14, and a timer switch 15.

The blow operation switch 13 is stopped (OFF).
Mode, an automatic (AUTO) mode, a low speed (Lo) mode, a medium speed (Me) mode, and a high speed (Hi) mode. Further, the temperature control switch 14 is for setting the room temperature (cooling temperature) in the nap room 3 according to the taste of the nap person A, for example, from the low temperature side (25 ° C.) to the high temperature side (2 ° C.).
The desired temperature can be set within a range of 8 ° C.).

The timer switch 15 sets the operation time of the nap room cooling (ie, the operation time of the blower 9). Reference numerals 13a, 14a, and 15a are indicator lamps for displaying the setting positions of the switches 13, 14, and 15, respectively. Next, in FIG.
16 is a temperature sensor (temperature detecting means) composed of a thermistor
The cooling unit 5 is disposed at a position near the suction port 6, specifically, at a position immediately after the suction port 6, at a position above the suction port 6. And the cooling unit 5
Inside the front surface of the case 51, a cold air blocking wall (cold air blocking means) 17 that is bent at a right angle so as to hang from the upper portion of the temperature sensor 16 to the rear portion (downstream of the air) of the temperature sensor 16 is provided. Is provided.

The cold air blocking wall 17 is bent so as to cover the upper part and the rear part of the temperature sensor 16.
The cool air cooled by the cool storage pack 55 is supplied to the temperature sensor 16.
It is to block from reaching the surroundings. The cold air blocking wall 17 is formed into a bent shape as shown in FIG. In addition,
In this example, the cold air blocking wall 17 is formed in a width dimension of the suction port 6 (FIG. 3).
The left and right sides are open to the space in the case 51.

FIG. 5 is a refrigeration cycle diagram including an electric control circuit of the apparatus of the present invention.
It is installed in the air-conditioning refrigeration cycle of the cab 1 of the truck, similarly to the apparatus described in JP-A-2-149509 and JP-A-8-258557. Specifically, 21
Is a compressor, which is driven by a truck driving engine (not shown) via an electromagnetic clutch 21a. 22 is a condenser for cooling and condensing the high-temperature, high-pressure gas refrigerant discharged from the compressor 21, and 23 is a condenser 2
This is a liquid receiver that collects the liquid refrigerant condensed in and discharges only the liquid refrigerant.

Reference numeral 24 denotes an electromagnetic valve for interrupting the flow of the refrigerant, reference numeral 25 denotes a temperature-operated expansion valve as a pressure reducing means for decompressing and expanding the liquid refrigerant, and reference numeral 25a denotes its temperature-sensitive cylinder. Reference numeral 26 denotes a refrigerant evaporator for air conditioning of the cab of the truck, which is installed in an air conditioning unit 27 disposed below the instrument panel 1a (see FIG. 1) in front of the cab 1 of the truck. This air conditioning unit 27
Air is blown into the inside by a blower 28, and after the blown air is cooled by the evaporator 26, the air is blown into the cab (vehicle compartment) 1 through a heater unit (not shown) and an air outlet mechanism.

Reference numeral 29 denotes the above-mentioned air conditioning equipment (25, 2
In the air conditioning refrigerant circuit having the condition (6), the solenoid valve 24 interrupts the flow of the refrigerant to the air conditioning refrigerant circuit 29. Reference numeral 30 denotes a cold storage refrigerant circuit provided in parallel with the air conditioning refrigerant circuit 29. Reference numeral 31 denotes a constant-pressure expansion valve as a decompression means for decompressing and expanding the liquid refrigerant flowing into the cold storage refrigerant circuit 30. When the pressure drops below the pressure, the valve opens.

The cold storage refrigerant evaporator (cooling means) 54 is connected downstream of the constant pressure expansion valve 31. A check valve 32 prevents the high-temperature refrigerant from flowing backward from the air-conditioning evaporator 26 to the cold-storage evaporator 54, and allows the refrigerant to flow only in one direction from the upstream side to the downstream side of the cold-storage evaporator 54. It is something to shed. The cool storage evaporator 54 cools the cool storage pack 55 by the latent heat of evaporation of the refrigerant circulating in the cool storage evaporator (for example, -20 ° C.) to cool the cool storage material. FIG. 5B shows a nap room cooling device.

Next, the electric control unit will be described.
Denotes a cool storage switch for setting a cool storage mode in which a coolant flows through the cool storage evaporator 54 to cool the cool storage pack 55. The cold storage switch 41 is installed on a control panel (not shown) of the vehicle air conditioner provided in the cab 1. Reference numeral 42 denotes an electric control device (control means), which is a signal input from the temperature sensor 16, the air blow operation switch 13, the temperature control switch 14, and the timer switch 15 installed on the control panel 12, and further from the cold storage switch 41. Input signal and cold storage pack 55
The operation of the blower 9 and the solenoid valve 24 is controlled in accordance with a signal input from the pack temperature sensor 43 for detecting the temperature of the air. The electric control device 42 can be configured using a known analog circuit or a microcomputer that is digitally controlled.

The pack temperature sensor 43 comprises a temperature sensing element such as a thermistor, and is located at the most downstream side of the refrigerant in the cold storage pack 55 disposed between the flat tubes of the cold storage evaporator 54. Disposed on the surface of the pack 55,
The completion of cold storage of the plurality of cold storage packs 55 is detected. Next, the operation of the present embodiment in the above configuration will be described. When an air conditioning switch (not shown) of the automotive air conditioner is turned on and the compressor 21 of the air conditioning refrigeration cycle in the truck cab 1 is driven by the vehicle engine, the refrigerant circulates in the refrigeration cycle. In this state, when the cold storage switch 41 is turned on, the electric control device 42 automatically controls the solenoid valve 25 to be turned on and off in response to the switch on signal. As a result, the refrigerant intermittently circulates also in the cool storage evaporator 54 in the cooling unit 5, and the evaporator 54 absorbs the latent heat of evaporation of the refrigerant from the cool storage pack 55 to cool the cool storage pack 55. Freezing the cold storage material (water etc.) in the pack 55,
A cool storage effect can be achieved.

When the completion of the cold storage of the cold storage pack 55 is determined based on the detection signal of the pack temperature sensor 43, the solenoid valve 2
4 remains open, and the constant pressure expansion valve 31 remains closed. When the cool storage switch 41 is OFF, the normal operation of the air conditioning is performed (the electromagnetic valve 24 is kept open). On the other hand, when performing cooling when the driver or the like takes a nap in the nap room 3 during parking of the truck, the ventilation operation switch 13 provided on the nap room cooling control panel 12 is turned on. Here, when the blow operation switch 13 is turned on to any position of the low speed (Lo) mode, the medium speed (Me) mode, or the high speed (Hi) mode, the electric control device 42 sets the blower 9 to the low speed and the medium speed. Or continuously at either high speed. Therefore, the blown air flows in the case 51 of the cooling unit 5 along the path indicated by the arrow A shown in FIG. 3, and the blown air passes through the airflow path 56 between the cool storage pack 55 and the evaporator 54. It exchanges heat and is cooled to become cool air. This cool air is blown out from the outlet 7 into the nap room 3 through the communication port 57 and the air flow path 52, and cools the nap room 3.

As described above, the nap room during the parking can be cooled without operating the refrigeration cycle until the cold storage material in the cold storage pack 55 is completely melted and the temperature rises. Further, after cooling is performed for a time set by the timer switch 15 after the timer switch 15 is turned on, the blower 9
Can be stopped automatically. Next, the case where the blow operation switch 13 is turned on to the automatic (AUTO) mode position will be described. FIG. 6 shows an example of the blower control by the control device 42. When the (AUTO) mode is set, next, in step 101, the blower 9 is turned on for a predetermined time (for example, 3 seconds).
Min) run at medium speed.

The operation of the blower is performed for the following reason. That is, the temperature of the temperature sensor 16 is lower than the room temperature due to the influence of the cool air cooled by the cold storage pack 55 in the initial stage of turning on the blower operation switch 13. Therefore, by forcibly operating the blower 9 in step 101, the air in the nap room is sucked from the suction port 6 and passed around the temperature sensor 16 so that the temperature of the temperature sensor 16 approaches the room temperature. it can. Therefore, after the elapse of the predetermined time in step 101, the room temperature of the napping room 3 can be represented by the temperature detected by the temperature sensor 16.

In the next step 103, the temperature sensor 16
Is compared with the set temperature Tset set by the temperature control switch 14, and the difference (Tr−Tse
The operation speed of the blower 9 is switched according to the magnitude of t). That is, in the example of FIG. 6, when the detected temperature Tr is higher than the set temperature Tset by 0.5 ° C. or more, the operation speed of the blower 9 is set to high (Hi). The detected temperature Tr is equal to the set temperature Ts
When it is within ± 0.5 ° C. with respect to et, the operating speed of the blower 9 is set to the medium speed (Me), and when the detected temperature Tr is lower than the set temperature Tset by 0.5 ° C. or more, the blower 9 The operating speed is set to low speed (Lo). In this way, by switching the operation speed of the blower 9 stepwise, the room temperature of the nap room 3 can be automatically maintained near the set temperature Tset.

In step 103 of FIG. 6, when the fan speed is switched by comparing the sensor detected temperature Tr with the set temperature Tset, a hysteresis width of ± 0.5 ° C. is provided to switch the fan speed. Hunting is prevented. By the way, according to experiments conducted by the present inventors, when the room temperature of the napping room 3 is automatically controlled, when the cold air blocking wall 17 is not disposed, the temperature detected by the temperature sensor 16 is 1 to 2 times lower than the room temperature of the napping room 3. ° C lower temperature,
Although the room temperature of the nap room 3 could not be automatically controlled satisfactorily, according to the present embodiment, since the cold air blocking wall 17 is disposed so as to cover the upper part, the rear part, and the side part of the temperature sensor 16, the temperature is lowered. It is possible to prevent the cool air cooled by the cold storage pack 55 from reaching the portion of the sensor 16. Therefore, the room temperature of the nap room 3 can be more accurately detected by the temperature sensor 16, and the room temperature of the nap room 3 can be automatically controlled well.

In the first embodiment, the air volume at the blower speed: high speed (Hi) is, for example, 40 m ³ /
h, blower speed: The air volume at medium speed (Me) is, for example,
The air volume at a blower speed of 30 m ³ / h and low speed (Lo) is, for example, 20 m ³ / h. (Second Embodiment) FIG. 7 shows a flowchart of the blower control according to the second embodiment,
1 is the same as in the first embodiment. In step 104, the difference (Tr−Tse) between the detected temperature Tr of the temperature sensor 16 and the set temperature Tset set by the temperature control switch 14 is set.
It is determined whether or not t) is equal to or higher than -1 ° C. In other words, it is determined whether the detected temperature Tr is lower than the set temperature Tset by 1 ° C. or more. If the determination in step 104 is N
If O, the process proceeds to step 103, where the detected temperature Tr
The operating speed of the blower 9 is switched according to the magnitude of the difference (Tr−Tset) between the temperature and the set temperature Tset.

On the other hand, when the determination in step 104 is YES (when the detected temperature Tr is lower than the set temperature Tset by 1 ° C. or more), the blower 9 is stopped in step 105 for a predetermined time (for example, 30 seconds). . By stopping the blower, the nap room 3 is prevented from becoming too cold when the outside air temperature is relatively low. Next, in step 106, the blower 9 is forcibly operated at a low speed (Lo) for a predetermined time (for example, 30 seconds) regardless of the detection signal of the temperature sensor 16. Since the air in the nap room is sucked into the suction port 6 by the forced operation of the blower 9, the temperature of the temperature sensor 16 rises, and the temperature sensor 16 can accurately detect the room temperature.

Incidentally, when the stop (OFF) mode of the blower 9 is simply set without performing the stop mode control as described above, as shown in FIG. On the other hand, the temperature of the temperature sensor 16 is affected by the cool air from the cool storage pack 55 and decreases as shown by the broken line. Therefore, the blower 9 does not restart but remains stopped.

On the other hand, according to the present embodiment, the arrival of the cool air to the temperature sensor 16 is blocked by the cool air blocking wall 17 and the blower 9 is stopped after the blower 9 is stopped.
6, the temperature of the temperature sensor 16 can be quickly brought close to the room temperature as shown by the broken line in FIG. Therefore, during the forced operation of the blower in step 106, the temperature sensor 16
Can be increased to a temperature higher than the set temperature in FIG. 9, and thereafter, the automatic operation of the blower operating speed according to the room temperature can be normally performed again. (Third Embodiment) FIG. 10 shows a third embodiment, in which a suction port 6 is provided in a case 51 of a cooling unit 5.
Of the cold storage pack 55
Further, an air purifying filter 18 for purifying air flowing into the front side of the cool storage evaporator 54 is mounted. And
In the cooling unit 5, a temperature sensor 16 is arranged at a position near the suction port 6 and upstream of the air cleaning filter 18 in the air, so that the cool air cooled by the cold storage pack 55 reaches the temperature sensor 16. The air is filtered off by the filter 18.

That is, in the present embodiment, the above-described cold air blocking wall 1
Instead of 7, an air purifying filter 18 is used to block the arrival of cool air to the temperature sensor 16. The air purification filter 18 is a horizontally long rectangular shape corresponding to the suction port 6,
It has a rectangular frame 18a made of resin.
Thus, the filter member 18b is held. The filter member 18b has a configuration in which, for example, an impregnated activated carbon is supported on a three-dimensional net-like porous foamed resin material (polyurethane foam or the like), and has a function of adsorbing an odor component by activated carbon and a function of removing dust by the porous foamed resin material. It has something to combine. Here, as the material of the filter member 18b, glass fiber paper, granular activated carbon, electret, or the like, or a combination thereof may be used.

The air cleaning filter 18 is detachably held by a filter supporting frame 18c provided at the outer edge of the suction port 6 of the case 51. When the regenerative cooling device is used for a long period of time, dust, germs, tobacco smoke and the like in the air adhere to the surface of the regenerative pack 55 and the evaporator 54 for regenerative cooling. In some cases, corrosion of 55 and 54 may be induced, or an offensive odor may be generated.

According to the third embodiment, however, the air purifying filter 18 can be mounted on the front side of the cold storage pack 55 and the cold storage evaporator 54 to remove dust and unpleasant odor components. Generation can be suppressed. In addition, since the function of blocking the arrival of the cool air to the temperature sensor 16 can be shared by the air cleaning filter 18, the room temperature control based on the temperature detected by the temperature sensor 16 can be improved similarly to the first and second embodiments. Can be done. (Other Embodiments) The present invention can be embodied in various modes other than the illustrated embodiment described above. For example, in a vehicle such as a one-box car other than a truck, the space at the rear of the cabin is parked when parking. The device of the present invention may be used for applications such as stopping the engine for cooling.

As the evaporator 54, in addition to a type in which a flat tube is bent in a meandering shape, a plurality of straight flat tubes are arranged in parallel, and refrigerant inlets and outlets are provided at both ends of the parallel arranged flat tubes. A type provided with an outlet tank (generally called a multi-flow type) may be used. In addition, in step 103 of FIGS. 6 and 7, the operating speed of the blower 9 is switched stepwise.
The operating speed of the blower 9 may be changed continuously.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an installation mode of a cooling unit according to a first embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing an installation mode of a cooling unit according to the first embodiment of the present invention.

3A is a partially cutaway front view of the cooling unit shown in FIG. 1, and FIG. 3B is a sectional view thereof.

FIG. 4 is a front view of a nap room cooling control panel according to the first embodiment of the present invention.

FIG. 5 is a refrigeration cycle diagram including an electric circuit unit according to the first embodiment of the present invention.

FIG. 6 is a flowchart of room temperature control in the first embodiment of the present invention.

FIG. 7 is a flowchart of room temperature control in a second embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a relationship between a room temperature and a temperature detected by a temperature sensor in the related art.

FIG. 9 is an explanatory diagram showing a relationship between a room temperature and a temperature detected by a temperature sensor in a second embodiment of the present invention.

FIG. 10 is a sectional view of a cooling unit according to a third embodiment of the present invention.

[Explanation of symbols]

3 ... nap room, 4 ... bed, 5 ... cooling unit, 6
..., Suction port, 7… outlet, 9… blower, 12… control panel, 16… temperature sensor, 17… cold air blocking wall, 18…
Air purifying filter, 42: electric control unit, 54: cold storage evaporator, 55: cold storage pack, A: nap.

Claims (5)

[Claims] 1. A cooling device applied to a vehicle having a nap room (3) for an occupant to take a nap, wherein the cooling unit (5) is installed in the nap room (3).
And a blowing means (9) provided in the cooling unit (5).
Cooling means (54, 55) provided in the cooling unit (5) and having a cold storage material (55) for cooling the air blown by the air blowing means (9); and provided in the cooling unit (5). , The nap room (3)
A suction port (6) for sucking air inside the cooling unit (5);
An outlet (7) for blowing the cold air cooled in the nap room (3) into the napping room (3); and a cooling unit (5) provided in a portion of the cooling unit (5) near the inlet (6). Temperature detection means (16) for detecting the temperature of the air taken into the mouth (6); and a detection signal from the temperature detection means (16) is inputted to control the operation of the air blowing means (9) to thereby control the air flow. A control means (42) for controlling the room temperature of the nap room (3); and the cooling means (54, 5) provided to the temperature detection means (16).
A cooling device for a vehicle, comprising: a cooling air cutoff means (17) for blocking the arrival of the cool air cooled in (5). 2. The cooling air shut-off means is provided with the suction port (6).
2. The vehicle cooling device according to claim 1, further comprising a cold air blocking wall (17) disposed above the temperature detecting means (16) at an inner part of the vehicle. 3. 3. A cooling device applied to a vehicle having a nap room (3) for an occupant to take a nap, wherein the cooling unit (5) is installed in the nap room (3).
And a blowing means (9) provided in the cooling unit (5).
Cooling means (54, 55) provided in the cooling unit (5) and having a cold storage material (55) for cooling the air blown by the air blowing means (9); and provided in the cooling unit (5). , The nap room (3)
A suction port (6) for sucking air inside the cooling unit (5);
An air outlet (7) for blowing the cool air cooled in the nap room (3) into the nap room (3), and an air sucked from the air inlet (6), which is disposed inside the air inlet (6). An air purifying filter (18) for purifying the air, a portion of the cooling unit (5) near the suction port (6), provided upstream of the air cleaning filter (18) on the air side, (6) a temperature detecting means (16) for detecting the temperature of the air taken into the air; and a detection signal from the temperature detecting means (16) being input and controlling the operation of the air blowing means (9) to thereby achieve the nap. Control means (42) for controlling the room temperature of the chamber (3), wherein the air purification filter detects that the cool air cooled by the cooling means (54, 55) reaches the temperature detection means (16). (18) characterized by blocking Vehicle cooling system. 4. The air blower (9) according to a detection signal of the temperature detector (16).
The vehicle cooling device according to any one of claims 1 to 3, wherein the operating speed of the vehicle is switched stepwise. 5. The air blower (9) according to a detection signal of the temperature detector (16).
And a stop mode for stopping the blower means (9). In this stop mode, after the blower means (9) is stopped for a predetermined time, the blower means (9) is stopped. The vehicle cooling device according to any one of claims 1 to 3, wherein (9) is forcibly operated for a predetermined time regardless of a detection signal of the temperature detection means (16).