JPH07257166A - Air conditioner - Google Patents

Abstract

PURPOSE:To arbitrarily adjust the temperature of the blown air to the prescribed air-conditioning zone by using an electronic refrigerating device while the air-conditioning capacity for the whole room is secured. CONSTITUTION:When the temperature of the air to be blown from a diffuser grille 10 for the passenger seat is dropped, the occupant may turn an electronic refrigerating switch 15 counterclockwise. This action allows the heat absorbing effect of a first heat exchanger (a part of an electronic refrigerating device 14) provided in a duct 8 for the passenger seat to cool the air in the duct 8 for the passenger seat. When the temperature of the air blown from the grille 10 is risen, the occupant turns the switch 15 clockwise to allow a second heat exchanger to execute the radiating action to heat the air in the duct 8 for the passenger seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of arbitrarily adjusting the temperature of air blown to a predetermined air conditioning zone in a room by using an electronic refrigerating device.

[0002]

2. Description of the Related Art As an air conditioner as described above, for example, one described in Japanese Patent Application Laid-Open No. 4-87830 has been conventionally known. According to this conventional technique, an electronic refrigerating device is provided in the wall portion of the boundary between the first duct communicating with the vent outlet of the vehicle air conditioner and the second duct communicating with the other outlet, and By adjusting the polarity and magnitude of the applied voltage, the temperature of the air blown from the vent outlet to the upper half of the occupant's body (predetermined air conditioning zone mentioned above) is adjusted.

[0003]

However, in the above-mentioned prior art, some of the other air outlets (heat air outlet and defroster air outlet) are connected to the outside of the passenger compartment, and the cold air cooled by the evaporator is used. Since a part of the air is discharged from the outside of the vehicle compartment, the amount of air blown into the vehicle interior is reduced, and as a result, the cooling capacity of the entire vehicle interior is reduced.

Therefore, in order to solve the above problems, the present invention is an air conditioner capable of arbitrarily adjusting the temperature of air blown to a predetermined air conditioning zone using an electronic refrigerating device while ensuring the air conditioning capacity of the entire room. The purpose is to provide.

[0005]

In order to achieve the above-mentioned object, the present invention provides, in the invention described in claim 1, an air blowing means for generating an air flow, an air conditioning means for air-conditioning the air from the air blowing means, and A first air passage that connects the air conditioned by the air conditioner to an outlet formed at a position facing a predetermined air conditioning zone in the room, and a second air that connects the air from the blower to the room only A first heat exchanger, a second heat exchanger, and a thermoelectric conversion unit connected to the both heat exchangers, and by switching the polarity of the voltage applied to the thermoelectric conversion unit, 1 heat exchanger is the heat absorption side and the second heat exchanger is the heat radiation side, or the first heat exchanger is the heat radiation side and the first heat exchanger is the heat absorption side, and application to the thermoelectric conversion unit Because the magnitude of the voltage changes The heat absorption amount in the first heat exchanger and the heat radiation amount in the second heat exchanger, or the heat radiation amount in the first heat exchanger and the heat absorption amount in the second heat exchanger are changed. The electronic refrigerating device, and setting means for respectively switching the polarity of the voltage applied to the thermoelectric conversion unit and adjusting the magnitude of the applied voltage.
The gist is an air conditioner in which a heat exchanger is arranged in the first air passage and a second heat exchanger is arranged in the second air passage.

Further, in the air conditioner according to claim 1,
A plurality of the predetermined air conditioning zones are provided in the room, a plurality of the air outlets are provided in the first air passage corresponding to the plurality of air conditioning zones, and an upstream of the plurality of air outlets in the first air passage is provided. Each side is provided with the electronic refrigerating device,
Further, a plurality of setting means may be provided corresponding to the plurality of electronic refrigerating apparatuses.

Further, in the air conditioner according to claim 1,
The air flowing through the second air passage may be blown out to a portion of the room other than the predetermined air conditioning zone. Further, in the air conditioner according to claim 1,
The air conditioned by the air conditioning unit may be conducted to the room through the second air passage.

[0008]

According to the invention described in claim 1, since it has the above-mentioned technical means, the air from the blower means is conditioned by the air conditioning means, and this conditioned air is the outlet of the first air passage. Is blown out to a predetermined air conditioning zone in the room. Further, the air from the blower is blown into the room from the second air passage.

Here, the temperature of the air blown from the outlet is adjusted by operating the setting means to switch the polarity of the voltage applied to the thermoelectric conversion unit of the electronic refrigerating device or adjust the magnitude of the voltage. . For example, when the first heat exchanger of the electronic refrigerating device is on the heat absorbing side and the second heat exchanger is on the heat radiating side,
By operating the setting means to adjust the magnitude of the voltage applied to the thermoelectric conversion unit, the first heat exchanger is set to the first heat exchanger.
The degree to which the air in the air passage is cooled and the degree to which the second heat exchanger heats the air in the second air passage can be adjusted.

When the setting means is operated so that the first heat exchanger is on the heat radiating side and the second heat exchanger is on the heat absorbing side, the first air is set in accordance with the manipulated variable of the setting means as described above. The heating degree of the air in the passage and the cooling degree of the air in the second air passage can be adjusted. As described above, according to the first aspect of the invention, the temperature of the air blown from the air outlet to the predetermined air conditioning zone can be arbitrarily adjusted by operating the setting means. Further, at this time, the air flowing through the second air passage is blown out only into the room and is not released to the outside, so that the air conditioning capacity of the whole room is secured.

According to the invention as defined in claim 2, the temperature of air blown to a plurality of air-conditioning zones in the room can be arbitrarily adjusted, so that the present invention can be applied to a room in which a plurality of air-conditioned persons exist. When it is applied to the air conditioning of, for example, the air conditioning of the passenger compartment of the bus, it is possible to control the blown air temperature to be satisfied by each air-conditioned person. Further, in the case where the air-conditioned person in the air conditioning zone cools the air in the first air passage with the first heat exchanger as the heat absorption side in order to lower the temperature of air blown out from the air outlet, The air is heated by the heat radiation effect of the second heat exchanger. Therefore, when the air from the second air passage is directed to the air-conditioned person in the air-conditioning zone, the air-conditioned person feels uncomfortable. However, according to the invention of claim 3, from the second air passage. Since this air is not blown out to the air conditioning zone, it is possible to avoid adversely affecting the air-conditioned person.

Further, according to the invention of claim 4, since the air blown into the room from the second air passage is also air-conditioned, the entire room including the air-conditioning zone and parts other than the air-conditioning zone The air-conditioning effect is improved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, the overall configuration of this embodiment will be briefly described with reference to FIG. Here, FIG. 3 is a diagram schematically showing an attachment state of the air conditioner and its ventilation duct to the bus vehicle.

As shown in FIG. 3, an air conditioner 41 for air conditioning the inside of the bus compartment is provided under the floor of the passenger compartment. In the air conditioner 41, a blower, a heat exchanger for cooling,
A well-known air-conditioning case for accommodating a heat exchanger for heating, an air-conditioning means such as a temperature adjusting means, etc. is mounted. The cooling heat exchanger is specifically an evaporator that constitutes a well-known refrigeration cycle together with a compressor, a condenser, a liquid receiver, and a pressure reducing means. The heating heat exchanger is specifically a heater core that uses engine cooling water as a heat source. Further, specifically, the temperature adjusting means is an air mix door that is rotatably provided in the air conditioning case and adjusts the amount of the cool air from the evaporator that passes through the heater core and the amount that bypasses the heater core.

A ventilation under-floor duct 43 is connected to the air conditioner 41. Further, the under-floor duct 43 is provided with a ceiling duct 42 arranged along the ceiling and an under-floor duct 12 arranged along the floor. It branches to and. Further, among the above ducts, the ceiling duct 42 and the floor duct 12
Opening and closing means for opening and closing the passages of the ducts 42 and 12, specifically, a rotatably provided door (not shown) is provided at a branching portion of and.

By operating the door so that the ceiling duct 42 is opened and the floor duct 12 is closed, cold air is mainly sent from the air conditioning case toward the ceiling duct 42. As will be described later, the interior of the ceiling duct 42 is a passenger seat duct 8 as a first air passage (FIG. 1).
And a cargo rack duct 9 (FIG. 1) as a second air passage. Therefore, the cool air sent to the ceiling duct 42 is blown toward the occupant's head from the plurality of cooling outlet grills 10 formed in the passenger seat duct 8, and further the plurality of loads formed in the cargo rack duct 9 are blown. It is blown from the shelf grill 11 (FIG. 1) toward the luggage rack.

By operating the door so as to close the ceiling duct 42 and open the floor duct 12, warm air is mainly sent from the air conditioning case toward the floor duct 12. Then, the warm air sent to the floor duct 12 is provided with a plurality of heating blowout grills 13 formed in the floor duct 12.
Is blown toward the feet of the occupants. Main switch 22 provided on the instrument panel in the cab
By operating each switch of the temperature setting device (FIG. 4), these instruction signals are sent to the control device 25 (FIG. 4), and the air blowing amount of the air blowing means, the drive stop of the evaporator, and the temperature adjusting means. Air-conditioning control such as the temperature adjustment amount is performed.

Next, the main part of this embodiment will be described with reference to FIGS. 1 and 2. Here, FIG. 1 is a cross-sectional view of the interior of a bus vehicle for showing a state in which the electronic refrigerator 14 is attached to the bus vehicle,
2 is a sectional view taken along the line AA in FIG. As shown in FIGS. 1 and 2, the partition plate 16 is provided in the ceiling duct 42.
It is divided into a passenger seat duct 8 and a luggage rack duct 9 by the ceiling duct 42.
And the cargo rack duct 9 are divided. A plurality of holes 17 are formed in the partition plate 16, and the electronic refrigerator 14 is inserted and fixed in each of these holes 17. Also,
These electronic refrigerating devices 14 are disposed immediately upstream of the passenger-seat outlet grill 10.

The electronic refrigerating apparatus 14 described above is disclosed in JP-A-5-6.
It is a publicly known one disclosed in Japanese Patent No. 3244, and specifically, the thermoelectric conversion unit 14c and the first heat exchanger 14a,
14b and. Here, the first heat exchanger 14a
Faces the passenger seat duct 8 and the second heat exchanger 14b faces the luggage rack duct 9. In addition, the electronic refrigerator 14
By switching the application direction of the voltage to the thermoelectric conversion unit 14c, the first heat exchanger 14a becomes the heat absorbing side and the second heat exchanger 14b becomes the heat radiating side, or the first heat exchanger 1
4a is the heat radiation side, and the second heat exchanger 14b is the heat absorption side. Further, the heat absorption amount and the heat radiation amount are adjusted by adjusting the magnitude of the voltage applied to the thermoelectric conversion unit 14c. The amount of electric power supplied to the thermoelectric conversion unit 14c can be adjusted by rotating the setting means 15 (specifically, an electronic refrigerating switch) provided on the armrest 6 of the seat 5.

In FIG. 1, 1 is a vehicle ceiling, 2 is a vehicle side window, 3 is a vehicle side plate, 4 is a vehicle floor, and 7 is a luggage rack.
Next, the control system of the electric power supplied to the electronic refrigerator 14 will be described with reference to FIGS. 4 and 5. 4 is an electric circuit diagram of the control system of this embodiment, and FIG. 5 is a detailed view of 18 in FIG.

In FIG. 4, reference numeral 22 denotes the above-mentioned main switch, which constitutes an instruction means for instructing the start of operation of the air conditioning means. Reference numeral 23a is a coil that is turned on when the main switch 22 is turned on.
Reference numeral 3b is a contact which is turned on when the coil 23a is energized. Further, reference numeral 24 is an actuator such as a fan motor for driving the air-conditioning means, specifically the blowing means, a servomotor for driving each door, a magnet clutch for connecting and disconnecting the compressor and the engine, and the like. Is a control device for controlling these actuators.

The inside of 18 in FIG. 4 is constructed as shown in FIG. Here, 31 is the electronic freezing switch 15
A reference numeral 32 is a resistance portion made of a resistor, a reference numeral 33 is a contact made of a metal having an extremely small resistance value, and a reference numeral 34 is an insulating portion made of an insulator. next,
The operation of the present embodiment having the above configuration will be described.

When the driver turns on the main switch 22, the coil 23a is energized, the contact 23b is closed, and the controller 25 is energized. Then, each of the air conditioning means is automatically controlled, and the temperature and the air volume of the conditioned air blown from the ceiling duct 42 and the floor duct 12 are automatically controlled. At this time, if the occupant is satisfied with the temperature of the air blown from the passenger-side blowout grill 10, the thermoelectric conversion unit 14c is set by setting the electronic refrigeration switch 15 to the central position (the movable portion 31 is at the position shown in FIG. 5A). Is de-energized. Therefore, the air in the passenger seat duct 8 and the air in the luggage rack duct 9 are neither cooled nor heated by the electronic refrigerating device 14.

If it is desired to lower the temperature of the air blown from the grill 10, the occupant may turn the electronic freezing switch 15 counterclockwise. At this time, the movable part 31 is located, for example, in the position shown in FIG. 5B, and the current flowing from the + side flows in the order of the resistance part 32 → thermoelectric conversion unit 14c → contact 33 → ground. And at this time, the thermoelectric conversion unit 14
When a voltage is applied to c, the first heat exchanger 14a absorbs heat,
The second heat exchanger 14b provides heat dissipation.

As a result, the air in the passenger duct 8 is the first
It is cooled by the heat exchanger 14a and blows out to the passenger seat 1
The blown air temperature from 0 decreases. In addition, the air in the cargo rack duct 9 is heated by the second heat exchanger 14b, and the temperature of the air blown from the cargo rack grill 11 rises. Also,
As the electronic freezing switch 15 is rotated counterclockwise, the movable part 31 rotates counterclockwise in FIG. 5, and a large voltage is applied to the thermoelectric conversion unit 14c, so that the first heat exchanger 14a.
And the amount of heat released from the second heat exchanger 14b increase. Therefore, the occupant can lower the temperature of the air blown from the passenger-seat blowing grille 10 by the amount of turning the electronic freezing switch 15 counterclockwise.

At this time, the temperature of the air blown from the grill 11 for the racks toward the duct 9 for the racks rises, but since this air is blown to the ceiling, it does not adversely affect the occupants. On the contrary, when it is desired to lower the temperature of the air blown from the grill 10, the occupant may turn the electronic freezing switch 15 clockwise. At this time, the movable part 3
1 is located, for example, in the position shown in FIG. 5C, and the current flowing from the + side is contact 33 → thermoelectric conversion unit 14c → resistor 3
It flows in the order of 2 → ground. At this time, a voltage having a polarity opposite to that in the case of FIG. 5A is applied to the thermoelectric conversion unit 14c, so that the first heat exchanger 14a performs heat dissipation and the second heat exchanger 14b performs heat absorption.

As a result, the air in the passenger duct 8 is the first
Heated by the heat exchanger 14a, the outlet grill 1 for passenger seats
The blown air temperature from 0 rises. Further, the air in the cargo rack duct 9 is cooled by the second heat exchanger 14b, and the temperature of the air blown from the cargo rack grill 11 decreases. Also,
As the electronic freezing switch 15 is rotated clockwise, the movable portion 31 rotates clockwise in FIG. 5, and the thermoelectric conversion unit 1
A large voltage is applied to 4c, and the heat radiation amount of the first heat exchanger 14a and the heat absorption amount of the second heat exchanger 14b increase. Therefore, the occupant can raise the temperature of the air blown from the passenger-seat blowing grille 10 by the amount of rotating the electronic freezing switch 15 in the clockwise direction.

At this time, the temperature of the air blown from the grill 11 for the racks toward the duct 9 for the racks decreases, but this air is blown to the ceiling as described above, which adversely affects the occupants. Does not reach. As described above in detail, in the present embodiment, both the air flowing through the passenger seat duct 8 and the air flowing through the luggage rack duct 9 are blown out into the vehicle compartment, so the air flowing through the luggage rack duct 9 is discharged to the outside of the vehicle compartment. As compared with the case of performing the above, the amount of air blown from the ceiling duct 42 into the vehicle compartment can be secured, and as a result, the cooling capacity of the entire vehicle can be secured.

In addition, it is possible to adjust the switch provided in each seat without adjusting the refrigeration cycle refrigerant pipes and installing complicated evaporators, compressors, condensers, etc. While air-conditioning the entire interior of a bus compartment, it is possible to control the blowout temperature for each occupant according to his or her preference. In addition, in the present embodiment, the first of the electronic refrigerator 14
The heat is always applied to the heat exchanger 14a and the second heat exchanger 14b, so that both the heat exchangers 14a and 14b can satisfactorily absorb and radiate heat.

Although one embodiment of the present invention has been described above, the present invention can be applied to the embodiments described below. For example, the set position of the electronic refrigeration switch 15 set by each occupant is detected, the weighted average of the set positions is calculated, and the temperature of the conditioned air sent from the air conditioner 41 to the ceiling duct 42 according to the calculation result. May be corrected.

That is, when there are many passengers who adjust the electronic refrigeration switch 15 so as to lower the temperature of the air blown from the passenger seat blowing grille 10, it is sent from the air conditioner 41 to the ceiling duct 42 accordingly. Correct the temperature of incoming conditioned air to a lower value. On the contrary, when many passengers adjust the electronic refrigeration switch 15 so as to lower the temperature of the air blown from the passenger grille 10, the air conditioner 41 sends the air conditioner 41 to the ceiling duct 42 accordingly. Correct the air temperature low. As a result, the power consumption of the electronic refrigeration device 14 as a whole can be reduced.

In the above embodiment, the outlet grill 1 for passenger seats.
The amount of air blown from 0 was the same between the blowout grills 10. However, an airflow adjusting means such as a door or a blower was provided near each blowout grill 10 and these airflow adjusting means could be independently controlled. May be. In this way, the air blown to each occupant can be set to the temperature and the air volume desired by each occupant, and a greater effect can be obtained.

In the above embodiment, the air conditioning control for each occupant in the bus passenger compartment has been described, but it may be applied to the air conditioning control for the bus driver. Further, in the above embodiment, the air conditioner for the bus vehicle has been described,
It can also be applied to a device for air conditioning a room having a relatively large space, such as a building air conditioner. In each of the above embodiments,
The ceiling duct 42 is divided into two ducts, the electronic refrigerating device 14 is provided so as to straddle the respective ducts, and the temperature of the air blown from the passenger grill 10 is adjusted. It may be divided into two ducts, and the electronic refrigerating device 14 may be provided so as to straddle the respective ducts so that the temperature of the air blown from the heating blowout grill 13 can be adjusted.

[Brief description of drawings]

FIG. 1 is a diagram showing a mounting state of an electronic refrigerating apparatus on a bus vehicle according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a diagram schematically showing how the duct and the air conditioner in the first embodiment are attached to a bus vehicle.

FIG. 4 is an electric circuit diagram of a control system of the first embodiment.

5 is a detailed view of 18 in FIG.
FIG. 5A shows the electronic refrigeration system in a stopped state, and FIG.
FIG. 5B shows the case where the first heat exchanger is on the heat absorption side and the second heat exchanger is on the heat radiation side, and FIG. 5C is the case where the first heat exchanger is on the heat radiation side and the second heat exchanger is on the heat absorption side. Each time is shown.

[Explanation of symbols]

 8 Ducts for luggage racks (first air passage) 9 Ducts for passenger seats (second air passage) 10 Blow grills for passenger seats (blowout ports) 11 Grills for luggage racks 14 Electronic refrigeration equipment 14a First heat exchanger 14b Second heat exchange 14c Thermoelectric conversion unit 15 Electronic refrigeration switch (setting means)

Claims (4)

[Claims] 1. An air blower for generating an air flow, an air conditioner for air conditioning the air from the air blower, and air conditioned by the air conditioner is formed at a position facing a predetermined air conditioning zone in a room. A first air passage leading to the air outlet and a second air passage conducting the air from the blower only to the room
It has an air passage, a first heat exchanger, a second heat exchanger, and a thermoelectric conversion unit connected to both of these heat exchangers, and the polarity of the voltage applied to this thermoelectric conversion unit is switched, whereby The first heat exchanger is the heat absorbing side and the second heat exchanger is the heat radiating side, or the first heat exchanger is the heat radiating side and the first heat exchanger is the heat absorbing side. Depending on the magnitude of the applied voltage, the amount of heat absorbed by the first heat exchanger and the amount of heat released by the second heat exchanger, or the amount of heat released by the first heat exchanger and the amount of heat released by the second heat exchanger An electronic refrigerating device configured to change the amount of heat absorption of the thermoelectric conversion unit, and setting means for respectively switching the polarity of the applied voltage to the thermoelectric conversion unit and adjusting the magnitude of the applied voltage. An exchanger is provided in the first air passage, the second Air conditioning apparatus characterized by exchanger is arranged in said second air passage. 2. A plurality of the predetermined air conditioning zones are provided in the room, a plurality of the air outlets are provided in the first air passage corresponding to the plurality of air conditioning zones, and the plurality of air outlets are provided in the first air passage. The air conditioner according to claim 1, wherein the electronic refrigerating devices are respectively provided on the upstream sides of the plurality of air outlets, and a plurality of the setting means are provided so as to correspond to the plurality of electronic refrigerating devices. 3. The air conditioner according to claim 1, wherein the air flowing through the second air passage is blown to a portion of the room other than the predetermined air conditioning zone. 4. The air conditioner according to claim 1, wherein the second air passage conducts the air conditioned by the air conditioner into the room.