JPH03224818A - Auxiliary air conditioning device for automobile - Google Patents

Abstract

PURPOSE:To effectively compensate insufficient warming through air-conditioning air by providing a thermionic device on the door of a car and so on, so as to determine which surface of a car interior to use as warming surface or as a cooling surface, and by supplying heating air to a hating surface of the thermionic device through a draft air means. CONSTITUTION:In a controller 7 for inputting each output signal from an outer air temperature sensor 1, a room temperature sensor 2, a room temperature setting means 3, a solar radiation sensor 4, and thermionic device inner/outer surface temperature sensors 5, 6, a blower fan motor application voltage decision means 8, an aimed blowing temperature decision means 9, an air mix door opening decision means 10, and a blowing mode decision means 11 for determining blower fan motor application voltage, aime blowing temperature, air mix door opening, and a blowing mode decision means 11, are provided. A heat load calculating means 12, and a thermionic device usage decision means 13 for determining if a car interior heating surface of a thermionic device 20 is used for warming or for cooling, or if it is stopped, are provided, while a current switching device 16 and a heating fan driving actuator 17 are controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in an auxiliary cooling/heating system for an automobile that assists an air conditioner for an automobile in order to make the environment inside a vehicle comfortable.

BACKGROUND OF THE INVENTION Conventional air conditioners for automobiles use cooling water used to cool the engine as a heat source for a heater, and also constitute a refrigeration cycle to cool air and generate harmonized air.

However, since all of these systems perform heating and cooling by generating conditioned air, the thermal sensation of the body parts of the occupants that are less likely to be exposed to the conditioned air is somewhat poor. Therefore,
Placing electric heaters etc. in locations corresponding to such body parts to compensate for the lack of temperature control by air-conditioned air is, for example, placing a heater inside the seat, and using that heater,
Heats the lower surfaces of the buttocks and thighs, which are less exposed to air-conditioned air.
It was done like this. (Unexamined Japanese Patent Publication No. 57-140216
(Refer to the publication number, etc.)

Problems to be Solved by the Invention However, such conventional auxiliary devices include devices that assist in heating, but not devices that assist in cooling. Of course, it is theoretically possible to cool various parts of the body by transferring heat with the low-temperature refrigerant generated in the refrigeration cycle, but refrigeration cycles generally use high-pressure refrigerant gas. Therefore, arranging such piping for the refrigeration cycle inside the vehicle has problems such as ensuring sealing performance.

On the other hand, a refrigeration method using the Peltier effect has been known as an electronic refrigeration method. This is a device that uses different metal wires to form a closed circuit, and when current is passed through it, the contacts on one side become hot and the contacts on the other side become cold.It is also used for air conditioning. It has the advantage that it can also be used for heating.

However, this electronic refrigeration method has not been widely used in the past due to its low efficiency. However, recently, as efficiency has improved, application to automobiles and the like is being considered.

However, electronic refrigeration cannot be easily applied to automobiles and the like because in order to cool one side, the other side becomes hot. That is, according to the inventors' experiments,
Even when current is passed through such a thermoelectric device, the heat generating part used as a heating surface and the heat absorbing part used as a cooling surface only become as shown in FIG. 15.

For this reason, there is not much of a problem when such thermoelectric devices are used as an auxiliary device for heating, but when used as an auxiliary device for cooling, the temperature of the cooling surface does not decrease much, so the auxiliary cooling capacity is extremely low. The problem is that it is small. This is because heat flows from the heating surface (heat generating part) to the cooling surface (heat absorbing surface) through the thermoelectric device itself. Therefore, in order to use a thermoelectric device as an auxiliary cooling device, it is necessary to prevent the heat generated on the heating surface from flowing into the cooling surface.

The present invention has been made in view of these conventional problems, and its purpose is to provide an auxiliary cooling/heating system for automobiles that can effectively supplement the lack of temperature control caused by the conditioned air of an air conditioner. This is what we are trying to provide.

Means for Solving the Problems Therefore, the present invention provides thermal environment amount detection means for detecting the amount of thermal environment inside and outside the vehicle interior, such as a room temperature sensor that detects the temperature inside the vehicle interior, and a thermal environment amount detection means for detecting the amount of thermal environment inside and outside the vehicle interior, such as a room temperature sensor that detects the temperature inside the vehicle interior. A heat load calculation means for calculating a heat load, and a dissimilar metal whose one side is part of the casing constituting the vehicle interior and whose other side is disposed so as to conduct heat transfer with the air outside the vehicle interior. When a wire forms a closed circuit and current flows through it, the contacts on one side become hot (or cold) and the contacts on the other side become cold (or hot). a thermoelectric device usage determining means for determining whether one side (the side facing the passenger compartment) of the thermoelectric device is to be used as a heating surface, a cooling surface, or a non-cooling/heating surface, depending on the magnitude of heat load of the thermoelectric device; A hot air blowing means is provided for sending hot air to the heat transfer surface of the thermoelectric device and removing heat flowing into the passenger compartment side heat transfer surface through the thermoelectric device itself.

The heat load in the vehicle interior is calculated based on the amount of thermal environment detected by a thermal environment amount detection means such as an operating room temperature sensor.

Depending on the magnitude of this heat load, the thermoelectric device usage determining means determines whether the thermoelectric device is to be used for heating, cooling, or neither.

Further, the hot air blowing means sends hot air to the heat transfer surface of the thermal lightning device to remove heat flowing into the passenger compartment side heat transfer surface through the thermal lightning device itself.

EXAMPLES Hereinafter, the present invention will be explained based on the drawings. Figures 1 to 5
The figure shows a first embodiment of the present invention.

First, the configuration will be explained. FIG. 1 shows the overall configuration of the present invention. 1 is an outside temperature sensor, 2 is a room temperature sensor, 3 is room temperature setting means, 4 is a solar radiation sensor, 5 is a thermoelectric device inner surface temperature sensor, and 6 is a thermoelectric device outer surface temperature sensor, and the detection data of these sensor groups and The detected value from the thermal environment amount detection means, which is a setting means, is input to the control device 7.

The control device 7 includes a blower fan motor applied voltage determining means 8, a target blowout temperature determining means 9, a near mix door opening degree determining means IO1 blowing mode determining means 11, a heat load calculating means 12, a thermoelectric device application determining means 13, etc. is built in, and based on the data input from the sensor groups 1, 2, 4, 5.6 and the setting means 3, the blower fan motor applied voltage V fa is set to operate the air conditioner (not shown).
ns Target outlet temperature T. 2. Air mix door opening degree Output to 15th grade.

Furthermore, in the control device 7, in order to operate the thermoelectric device 20 and the heat transfer fan 21 set on the door 19 of the vehicle, the heat load is calculated by the heat load calculation means 12, and the thermoelectric device is It is determined whether the passenger compartment side heat transfer surface No. 20 is used for heating, cooling, or stopped, and the output is output to the current switching device 16 and the heat transfer fan drive actuator 17 that constitute the hot transfer air blowing means. do.

FIG. 2 shows a state in which the thermoelectric device 20 is attached to the door I9, and
The hot air blowing means is shown. The thermoelectric device 20 is disposed on the door 19 so that the cabin-side heat transfer surface 27 forms part of the inner surface of the door constituting the cabin. 22 is a heat transfer fin attached to the rear surface of the thermoelectric device 20 disposed on the door 19, that is, the outside of the vehicle; 21 is a heat transfer fin that introduces outside air into the heat transfer fin 22 to promote heat transfer; 23 is an exhaust port for the fan, and 24 is an intake port for taking in outside air. Note that 25 is an armrest attached to the door 19 in a substantially horizontal direction.

FIG. 3 shows thermoelectric device 20 with its components disassembled. 22 is a heat transfer fin, 26 is a heat transfer device 2
0 (only a portion is shown), 27 is a heat transfer surface on the passenger compartment side that performs cooling or heating, and 28 is a case where the temperature changes in the opposite direction to that of the heat transfer surface, that is, when the heat transfer surface 27 becomes hot, it is cooled. 29 is a thermo module that transfers heat between the heat transfer surfaces 27 and 28, and 30 is a protective cover provided on the front surface of the heat transfer surface 27 on the vehicle interior side.

In one thermoelectric device 20, by passing a current through the thermo module 29, the heat transfer surface 27 performs cooling or heating, and the heat transfer surface 28 performs the opposite heating or cooling. and heat transfer surface 2
7 from cooling to heating can be done by passing current in the opposite direction.

In this embodiment, the air conditioner uses a device that is automatically controlled by each means 7 to I2 built into the control device 7, but the invention is not limited to this, and any type of air conditioner can be used. But it's okay.

The operation of the automatic air conditioner having the above-mentioned auxiliary cooling/heating system for automobiles will be explained with reference to the flowchart shown in FIG. 4. Note that symbols 101 to 118 in the figure indicate processing procedure (step) numbers.

When the air conditioner switch (not shown) is turned on, the controller starts up together with the air conditioner, and constants A-H and ~55 are set (lOl), which are used for subsequent process determination.
In addition, various setting amounts that will serve as criteria for determination in subsequent steps are set (102).

Here, the constant that is initially set is the target outlet temperature T.

A to E1 used in the calculation formula for f, FH used in the calculation formula for the opening degree X of the air mix door, and Ll-L5 used in the calculation formula for the heat load.

Further, the set amounts include a heat load set amount La and a thermoelectric device outdoor surface temperature set amount T. ut"a and thermoelectric device indoor surface temperature setting amount T1.,・a are set. In addition, for air conditioning air control, outside temperature setting amount T, ・λ, room temperature setting amount T
1c @ a s The solar radiation setting amount S-a is also set.

In step (103), each sensor 1, 2, 45.6 and the room temperature setting device 3 determine the outside temperature Ta as room temperature Tic, the amount of solar radiation S, and the surface temperature T 1 of the indoor side and outdoor side of the thermoelectric device.
n, Toct data and room temperature set value T set
Enter.

In step (104), the room temperature Ti detected by the room temperature sensor 2 is determined by the blower fan motor applied voltage determination means 8 of the control device 7 in order to control the air volume of the blower fan by the applied voltage. The blower fan applied voltage setting value is determined by the difference between the room temperature setting value Tsat and the room temperature setting value Tsat set by the room temperature setting means 3, that is, (Ti.-T,, t).

The applied voltage increases as the deviation ('r sc -'r,, t) increases, and by increasing the air volume, the applied voltage increases at room temperature Ti. quickly approach the room temperature set value T M 11 t.

In step (105), the target outlet temperature determining means 9 sets the target outlet temperature T or to the outside temperature T6 and the room temperature Tt. , room temperature set value T @at) From the amount of solar radiation S, Tof-A-Ta+
B-TLc+C-T8. , t+D-80E (A-E is a constant).

In step (106), this target blowing temperature T is determined. , the air mix door opening degree determining means 10 determines the opening degree X of the air mix door as X=F・Tor"+G*To
Calculate as r+, H (F−H is a constant).

In step (107), the target blowing temperature T is determined. Based on f, the blowing mode determining means 11 determines the blowing mode. That is, if the target blowing temperature is high, the heater mode is selected, if the target blowing temperature is medium, the pie level mode is selected, and if the target blowing temperature is low, the mode is the vent mode.

1 Air conditioning is performed by the air conditioner through the processing steps described above.

Next, in step (108), the room temperature Tic detected by the room temperature sensor 2, the solar radiation amount sensor 4, and the outside temperature sensor l, the amount of solar radiation S, the outside temperature T6, and the set room temperature T s o t set by the room temperature setting means 3 are used. Then, the heat load calculation means 12 calculates the heat load as L=T1. XL1+SXL2+T,,t
XL 3 +T, XL 4 +L 5 (L 1-L5
Calculated as a fixed number). The value of heat load is distributed in the range from 0 to 1. For example, if it is less than 0, it is 0.
regarded as.

In step (109), the heat load calculated in step (108) is used to decide whether to use the thermoelectric device 20 on the cooling side, on the heating side, or to stop it.

Whether to use the thermoelectric device 20 on the heating side or stop it is determined by comparing the value of the heat load with a heat load setting amount L-a having a hysteresis of 0.4 and 0.55. Also, whether to use or stop the air conditioner is compared with a set amount having a hysteresis of 0.5 and 0.65.

2 Here, if the current heat load value is 0.2, it is on the heating side, and in order to switch from the heating side to the stopped state, the heat load value must become larger than 0.55. It doesn't switch. Once it switches to the stopped state,
In order to switch from the stop state to the heating state, the heat load value must become less than 0.4. Similarly, in order to switch from the stopped state to the cooling state, the heat load value must be greater than 0.65.

By providing a certain range for state switching in this manner, stable control can be performed even if some fluctuations occur in the heat load.

If the determination result is the heating side, the process goes to step (110), and if the result is the cooling side, the process goes to step (111).

If it is stopped, the process advances to step (116).

In step 110, the surface temperature T of the outdoor heat transfer surface 28 of the thermoelectric device 20 is determined. Set amount T with hysteresis from -2°C to 0°C. Compare with U,・a. Here, if To□ was previously 5°C and is currently -1'C, it is in the state of the line above the set amount shown in the figure, and this state will be called an ON state. Similarly, previously it was -4℃ and now -
At 1° C., it is in the state shown by the lower line of the set value shown in the figure, and this state will be referred to as the OFF state. If it is in the ON state, it will not switch to the OFF state unless T out becomes less than 12°C, and if it is in the OFF state, it will not switch to the OFF state unless T out becomes greater than 0°C.
It does not switch to the ON state. The subsequent discrimination with a set amount having hysteresis has the same meaning. Here, T ou
If t is in the ON state larger than the set amount, step (
If the OFF state is smaller than the set amount, the process goes to step (116).

In step (112), the surface temperature Tin of the indoor heat transfer surface 27 of the thermoelectric device 20 is adjusted from 45°C to 48°C.
Compare the indoor surface temperature setting amount of a thermoelectric device with a hysteresis of . If it is ON, step (11)
6), and if it is in the OFF state, go to step (114).

That is, in step (110), if the surface temperature T out of the outdoor heat transfer surface 28 of the thermoelectric device 20 is too low, the use of the thermoelectric device 20 is stopped to prevent frost from forming on the heat transfer fins 23 of the thermoelectric device 20. This prevents the glass from sticking and making it difficult to store the window glass. Then, if the temperature of the outdoor side cooling surface 27 of the thermoelectric device 20 is not so low, the surface temperature of the indoor side heat transfer surface 27 of the thermoelectric device 20 is checked in step (112). If it is not hot (if it is OFF), step (11)
Go to step 4) and use the thermoelectric device 20 as an auxiliary heater, and if it is too hot (ON state) go to step (116),
Stop using the thermoelectric device 20.

In the step (111) on the cooling side, the surface temperature T out of the outdoor heat transfer surface 28 of the thermoelectric device 20 is set to 6
Compare with a setpoint having a hysteresis of 5°C to 70°C. If it is ON, go to step (113),
If it is in the OFF state, go to step (116).

5. In step (113), the surface temperature Ti of the indoor heat transfer surface 27 of the thermoelectric device 20 is determined. Thermoelectric device indoor surface temperature setting amount Tl with hysteresis from 0°C to 4°C
Compare with n.6. And if it is ON, step (
115) and use the thermoelectric device 20 as an auxiliary cooler. If it is in the OFF state, go to step (116).

In other words, when used on the cooling side, step (11)
In 1), the temperature T of the outdoor heat transfer surface 28 of the thermoelectric device 20. If ut is hot, the use of the thermoelectric device 20 is stopped in step (116), and the surface temperature Ti of the indoor heat transfer surface 27 of the thermoelectric device 20 is determined in step (113).

If is too low (OFF state), use of the thermoelectric device 20 is stopped (step 116). Here step (109
) to step (113) correspond to the operation steps of the thermoelectric device application determining means 13.

In step (117), the control unit 7 sends the blower fan applied voltage set value V tan determined in step 104 to the switch 14 of the blower fan motor 6 to put the blower fan motor 18 into a driving state.

In step (118), the control unit 7 outputs an output to the actuator 17 of each door, and the various air conditioning doors 19
Set.

In this way, when it is determined that the heating capacity of the air conditioner is insufficient, the thermoelectric device 20 is used as an auxiliary heater, and when it is determined that the cooling capacity is insufficient, the thermoelectric device 20 is used as an auxiliary heater. Thermoelectric device 20 is used as a supplemental cooler. Therefore, parts of the human body whose temperature cannot be controlled by the conditioned air are reliably cooled and heated, improving the air-conditioned comfort of the occupants.

The flow of the heat transfer air for the thermoelectric device 20 in the first embodiment described above is as shown in Method 1 shown in FIG. 5. Here, the reference numerals in the drawings indicate the reference numerals of the constituent parts in FIGS. 1 to 3. Further, the fan 21 for promoting heat transfer is always driven when the thermoelectric device 20 is used.

FIGS. 6(A) and 6(B) show flowcharts of a second embodiment of the present invention.

In this embodiment, a hygrometer is added to the configuration of the first embodiment described above to detect the indoor relative humidity φ, and the thermoelectric device 20
The surface dew point temperature Td of the indoor heat transfer surface 27 is calculated, and the surface dew point temperature Td is added to the control characteristic value to prevent dew from forming on the thermoelectric device heat transfer surface 27.

The control operation will be explained according to the flowcharts in FIGS. 6(A) and 6(B). Note that the description of steps having the same control content as in the first embodiment will be omitted.

Steps (201) and (202) are similar to steps (101) and (102) in the first embodiment.

In step (203), step (10
The relative humidity φ in the vehicle interior is added to the detected value in 3).

Steps (204) to (209) are the same as steps (104) to (109).

In the heating side step (210), the surface temperature T of the outdoor heat transfer surface 27 of the thermoelectric device 20 is determined. U, from 10℃ to 15
Compare with the set amount Tout·a that maintains the hysteresis of °C. If the amount is higher than the set amount, step (212
), the operation of the heat transfer fan 21 is stopped, and if the temperature is low, the operation of the heat transfer fan 21 is performed in step (213).

In the step (211) on the cooling side, the surface temperature T out of the outdoor heat transfer surface 28 of the thermoelectric device 20 is increased from 40°C to 4°C.
It is compared with a set amount Tout”a which has a hysteresis of 5°C. If it is higher than this set amount, the step (
The heat transfer fan 21 is operated in step 214), and if the temperature is low, the operation of the heat transfer fan 21 is stopped in step (215).

Step (216) and step (217) are similar to step (110) and step (111) in the first embodiment.

In step (218), the indoor surface dew point temperature Td of the thermoelectric device 20 is calculated using the room temperature Trc and the indoor relative humidity φ. Here, the dew point temperature T6 is the temperature at which dew appears from the air when the weight of moisture per unit volume currently contained in the air is the same. Generally, it cannot be expressed by a simple calculation formula, so an approximate function is created and determined using a known table such as a vapor diagram.

Step 219 is similar to step (112).

In step 220, the indoor surface temperature Tin of the thermoelectric device 20 is set to (Td+
3) Compare with a set amount that has hysteresis from °C to ('rd+6) °C. If the temperature is higher than around the dew point temperature, the process goes to step (222) and the thermoelectric device 20 is used as a cooler. If the temperature is lower than around the dew point temperature, there is a possibility that dew may adhere to the heat transfer surface 27 of the thermoelectric device 20, so the process proceeds to step (223) and the use of the thermoelectric device 20 is stopped.

Here, the temperature (T) is slightly higher than the dew point temperature T.

+3)°C or (Td+6)'C as the set temperature with hysteresis is the temperature sensor 2 or humidity sensor 22.
This is to provide some margin by taking into account the measurement error of 0.

Steps (221) to (225) are steps (114,) to (118,) in the first embodiment described above.
).

According to this embodiment, the heat transfer device 2 is
0, the cooling capacity is improved, and since the conditions for using the heat transfer fan 21 are limited compared to the first embodiment, the electric power used to drive the fan can be saved. Furthermore, since the thermoelectric device is used as a cooler by detecting the dew point temperature, it is possible to prevent dew from forming on the surface of the thermoelectric device.

Note that the flow of heat transfer air in this embodiment is the same as method 1 shown in FIG. 5 in the first embodiment.

7 to 10 show a third embodiment of the present invention. In this embodiment, the flow of heat transfer air for the thermal lightning device 20 is
This method is similar to method 2 shown in the figure. Note that the reference numerals in the drawings indicate the reference numerals of the constituent parts in FIGS. 8 to 9.

First, referring to FIG. 8, the configuration around the thermoelectric device will be explained. Reference numeral 32 indicates an internal air intake port for sucking indoor air from below the side surface of a seat (not shown) on which a passenger is seated; 33 indicates a fan for sucking the air and supplying it to the thermoelectric device 20; and 34 indicates for driving the fan 33. The motor 35 transfers the air flow generated by the fan 33 to the thermoelectric device 2.
A duct 36 for supplying air to the heat transfer surface of the thermoelectric device 20 is a duct for discharging air that has been heated on the outdoor heat transfer surface of the thermoelectric device 20 to the outside from the exhaust port 23 .

The vicinity of the fan 33 will be explained with reference to FIG. Reference numeral 37 denotes an inside air introduction duct for introducing indoor air, which communicates with the indoor air introduction port 32 described above. 38 is an outside air introduction duct that communicates with the outside air inlet 24 (see FIG. 2) provided below the door (not shown) and takes in outside air; 39 is a fan 33;
switching means for switching between using the indoor inlet 32 and the outdoor inlet as an air intake port;
is a motor for driving the switching means 39, which operates according to commands from the control device 7. With this configuration, inside air or outside air is introduced through the duct 37 or 38, and the outdoor heat transfer surface 28 of the thermoelectric device 20 is heated.
can be supplied with air.

Next, the control operation will be explained according to the flowcharts in FIGS. 10(A) and 10(B). Note that the explanation of the same parts as those in the flowchart of FIG. 4 of the first embodiment described above will be omitted.

Steps (301) to (316) are the fourth
The same applies to steps (101) to (116) in the figure.

Next, in steps (317) to (323), it is determined whether to use the inside or outside air as the heat transfer air.

In step (317), the usage mode of the thermoelectric device 20 is checked. If it is the cooler mode, go to step (31B), and if it is the heater mode, go to step (319).

In step (318), the outside air temperature T is compared with, for example, (room temperature Ti.+20)°C, which is predetermined as 3 degrees Celsius, which is the temperature for determining whether to introduce inside air or outside air as the heat transfer air. If the outside temperature T is higher than this comparison temperature, the process proceeds to step (320) and inside air is introduced from the indoor air inlet 32. If it is not high, go to step (321) and introduce outside air from the outside air introduction port 24.

On the other hand, when the thermoelectric device 20 is used as a heater, in step (319), the outside temperature T, (
Room temperature T1. -35) °C. If the outside temperature T, is higher than this comparison temperature, step (32
3) and introduce outside air from the outside air inlet. If it is not high, the process goes to step (322) and indoor air is introduced from the indoor air introduction port 32.

Step (324) and step (325) are the first
In the embodiment, step (124) and step (12
This is the same as 5).

According to this embodiment, the heat transfer air for the thermoelectric device 20 is introduced by switching between the vehicle interior inlet 32 and the vehicle exterior inlet 24, so that it is possible to efficiently 4 It is possible to perform supplementary heating and cooling.

11 to 13 show a fourth embodiment of the present invention.

In this embodiment, the flow of heat transfer air for the thermoelectric device 20 is as shown in Method 3 shown in FIG. It is designed so that heat can be transferred by switching between both sides.

That is, the heat transfer air introduced from the outside air introduction port 24 is
1st. The second switching means 41.42 switches the first
It is accelerated by the fan 43 or the second fan 44. And again the third. The fourth switching means 45 and 46 switch the heat to be transferred from the outside heat transfer surface 28 or the inside heat transfer surface 27 of the thermoelectric device 20, and the heat is discharged from the outside air outlet 47 or the inside air outlet 48.

Further, the heat transfer air introduced from the inside air introduction port 32 in the same manner is the first one. Switched by the second switching means 41, 42, the first fan 43 or the second fan 44 is accelerated, and the third. Switched by the fourth switching means 45 and 46, heat is transferred from the outside heat transfer surface 28 or the inside heat transfer surface 27 of the thermoelectric device 20 to the outside air outlet 47 or the inside air outlet 4.
It is discharged from 8.

FIG. 12 illustrates an example of a thermoelectric device used in this example. Also on the indoor heat transfer surface 27 of the thermoelectric device 20,
Fins 49 are provided similarly to the fins 22 provided on the outdoor heat transfer surface 28.

The protective cover 50 disposed on the indoor side has an inlet 51 for heat transfer air passing through the heat transfer surface of the thermoelectric device 20 on the cabin side.
is provided.

Next, the control operation of this embodiment will be explained according to the flowcharts of FIGS. 13(A) and 13(B). Note that the explanation of the same parts as the flowchart of FIG. 10 of the third embodiment described above will be omitted. The steps from step (401) to step (423) are from step (301) to step (32) of the third embodiment.
It is the same as up to 3).

Next, in steps (424) to (434), it is determined which surface of the outdoor surface 28 or the indoor surface 27 of the thermoelectric device 20 the heat transfer air should flow depending on the use of the thermoelectric device 20.

In step (424,), the purpose of the thermoelectric device 20 is determined. When using it as a cooler, follow step (4).
25), and when using it as a heater, step (
430).

In step (425), the temperature T of the outdoor side of the thermoelectric device 20 is determined. U, is compared with the thermoelectric device outdoor surface temperature setting amount Tout''a which has a hysteresis of 50°C to 55°C. If the temperature is higher than the setting amount, step (4) is performed.
Proceed to 27). If the condition is low, step (426
).

In step (426), the temperature T 1n of the indoor heat transfer surface 27 of the thermoelectric device 20 is set to a thermoelectric device indoor surface temperature set amount Ti, .a with a hysteresis of 8° C. to 12° C.
Compare with. If it is higher than the set amount Ttn·a, the process goes to step (428). If low, step (429)
go to

In step (427), the first
Heat transfer air is blown out from both the fan 45 and the second fan 46 toward the outdoor heat transfer surface 287 of the thermoelectric device 20 . In this way, the thermoelectric device 20
It is possible to prevent the outdoor heat transfer surface 28 from heating abnormally.

In step (428), the heat transfer air from the first fan 45 is sent to the outdoor heat transfer surface 28 side of the thermoelectric device 20, and the heat transfer air from the second fan 46 is sent to the indoor heat transfer surface 27 side of the thermoelectric device 20.
send to the side Efficient heat transfer can be expected because heat transfer by heated air is added to heat transfer by radiation.

In step (429), the first fan 4 for thermoelectric device
5. Both the second fans 46 are used on the indoor heat transfer surface 27 side of the thermoelectric device 20.

This can prevent the indoor heat transfer surface 27 of the thermoelectric device from becoming abnormally low temperature and forming frost. In addition, by passing air through the low-temperature surface of the thermoelectric device and distributing it into the cabin, heat can be transferred by convection in addition to radiant heat, which can cool the relatively high-temperature window side of the vehicle interior. can.

In step (430), the thermoelectric device 20 is used as a heater, and the temperature of the outdoor side surface of the thermoelectric device 8 and the device 20 is T08. from 8℃ to 12℃
Thermoelectric device outdoor surface temperature setting amount T having hysteresis of °C. It is compared with ut''a. If it is higher than the set amount, the process goes to step (431).

If the amount is lower than the set amount, the process goes to step (432).

In step (431), the temperature Tln of the indoor surface of the thermoelectric device 20 is compared with the thermoelectric device indoor surface temperature setting amount T1na-a having a hysteresis of 50°C to 55°C. The temperature T s n on the indoor side is the set amount Ti.・
If it is lower than a, go to step (433), and if it is higher, go to step (434).

In step (432), since the temperature on the outdoor side of the thermoelectric device 20 is abnormally low, the first fan 45. The second fan 46 also distributes air.

Thereby, the outdoor side surface of the thermoelectric device can be appropriately heated.

In step (433), the first fan 45 distributes air to the outdoor side of the thermoelectric device 20, and the second fan 46 distributes air to the indoor side.

In step (434), both the first fan 45 and the second fan 46 distribute air to the indoor side surface of the thermoelectric device 20.

In this step (434), since the indoor surface of the thermoelectric device 20 is considered to be abnormally high, by distributing air from both fans 45 and 46 to the indoor surface, heating is achieved not only by radiant heat but also by convection. There is an effect that it can be done.

Step (435) and step (436) are the same as step (324) and step (3) in the third embodiment described above.
25).

According to this embodiment, by appropriately switching the air distribution of the thermoelectric device 20, it is possible to transfer not only radiant heat but also heat by convection, which, together with the installed air conditioning equipment, provides more comfortable air conditioning in the vehicle interior. You can create a space.

In this embodiment, two fans 45 and 46 are used for switching, but it is also possible to use one fan and provide a switching means at the distribution port, or it is possible to use one fan instead of two. A large number of fans may be switched. Furthermore, although a method of switching the fans has been shown, it is naturally possible to add control to stop the fans.

FIG. 14 shows the flow of heat transfer air in the fifth embodiment of the present invention.

In this embodiment, the first switching means 52 selectively introduces the heat transfer air from the outside air introduction port 24 or the inside air introduction port 32, one fan 53 is used, and the second switching means 54 introduces the heat transfer air into the room of the thermoelectric device. Air is selectively blown to the inner heat transfer surface 27 or the outdoor heat transfer surface 28.

Effects of the Invention Since the present invention is configured as described above, it is possible to effectively assist in the insufficient temperature control of an air conditioner, and it is possible to control the temperature of parts of the human body that cannot be temperature controlled by conditioned air. , air conditioning comfort for passengers is further improved.

[Brief explanation of drawings]

1 Figures 1 to 5 are diagrams showing a first embodiment of the present invention.
Figure 2 shows the overall configuration, Figure 2 shows how the thermoelectric device is attached to the door and the hot air blower, Figure 3 shows the components of the thermoelectric device disassembled, and Figure 4 shows the thermoelectric device installed in the door. Flowchart showing the operation, FIG. 5 is a diagram showing the flow method of heat transfer air, FIGS. 6(A) and (B) are flowcharts showing the operation of the second embodiment of the present invention, FIGS. 7 to 1O 7 is a diagram showing the third embodiment of the present invention, FIG. 7 is a diagram showing the flow method of heat transfer air, FIG. 8 is a diagram showing the mounting state of the thermoelectric device on the door and the hot transfer air blowing means, and FIG. 9 is a diagram showing the heat transfer air flow method. FIG. 1A is a diagram showing the vicinity of the heat transfer air switching means. (B) is a flowchart showing the operation, FIGS.
) is a flowchart showing the operation, FIG. 14 is a diagram showing the flow method of heat transfer air in the fifth embodiment of the present invention, and FIG. ) is a diagram showing temperature changes over time. 2 1... Outside temperature sensor, 2... Room temperature sensor, 3...
Room temperature setting means, 4... Solar radiation sensor, 5... Thermoelectric device inner surface temperature sensor, 6... Thermoelectric device outer surface temperature sensor, 7... Control device, 8... Prower fan motor application Voltage determining means, 9... Target outlet temperature determining means, 10... Air mix door opening degree determining means, 11
... Blowout mode determining means, 12... Heat load calculating means, 13... Thermoelectric device application determining means, 14... Prower fan motor, 15... Each door actuator,
16...Current switching device, 17...Thermoelectric fan drive actuator, 18...Various air conditioning doors, 19...Door, 20...Thermoelectric technology, 21...Fan, 22...
...Fin, 23...Exhaust port, 24...Outside air inlet, 25...Arm, rest, 26...Box, 27...
・Thermoelectric device indoor heat transfer surface, 28...Thermoelectric device vehicle outer heat transfer surface, 29...Thermo module, 30...
- Protective cover, 32... Inside air inlet, 33... Fan, 34... Motor, 35... Supply duct, 36.
...Exhaust duct, 37...Inside air introduction duct, 39...
- Switching means, 40... Motor, 41... First switching means, 42... Second switching means, 43... First fan,
44... Second fan, 45... Third switching means, 46
...Fourth switching means, 47.. Outside air outlet, 48. Inside air outlet, 49.. Fin, 5o.. Protective cover 51.
...Introduction port, 52...First switching means, 53...Fan, 54...Second switching means, Fig. 3 JP-A-3-224818 (12) Fig. 8 JP-A-3-224818 (14) Figure 11 500 JP-A-3-224818 (16)

Claims (1)

[Claims] (1) A thermal environment amount detection means for detecting the amount of thermal environment inside and outside the vehicle interior, such as a room temperature sensor, and a heat load calculation means for calculating the heat load inside the vehicle interior based on the thermal environment amount; It is a part of the casing that makes up the vehicle interior, and the other side is equipped with a thermoelectric device that is arranged to conduct heat transfer with the air outside the vehicle interior, and a thermoelectric device that is arranged to conduct heat transfer with the air outside the vehicle interior. One side (side of passenger compartment)
The thermoelectric device is characterized by being provided with a thermoelectric device usage determining means for determining whether to use the thermoelectric device as a heating surface, a cooling surface, or a non-cooling surface, and a hot-transfer air blowing means for sending hot-transfer air to the heat-transfer surface of the thermoelectric device. An auxiliary heating and cooling system for automobiles.