JPH10138919A - Vehicle air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air-conditioning device which is so constituted as to permit the room temperature of a vehicle to elevate to a desired temperature in a short time, and can eliminate discomfort of passengers. SOLUTION: In an air conditioning device for a vehicle, which is so constituted as to operate in parallel a heat pump type air conditioning device 2 and a heating heater 3 which are installed in the vehicle in order to elevate the room temperature of the vehicle to a desired temperature in a short time, an on-delay timer 10 is provided as a control means which make the heat pump type air conditioning device to be in an operation stop state and lets only the heating heater operate when a certain time has elapsed from the start of a parallel operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner for controlling the temperature inside a railway vehicle.

[0002]

2. Description of the Related Art Conventionally, as means for heating railway vehicles,
Under-seat electric heaters, floor heaters or heat pump air conditioners have been employed, of which the under-seat electric heater has been the mainstream heating means for commuting vehicles.

[0003] Although the electric heater under the seat is effective for warming the seat, it takes a lot of time to warm the entire cabin.

On the other hand, a heat pump type air conditioner is an effective means for an air conditioner because it can handle both a cooler and a heater. However, the direction of flow of cool air during cooler and warm air during heating has a vertical relationship. Therefore, prepare two types of ducts, a cooling duct and a heating duct, or equip only a cooling duct, and forcibly reduce the warm air discharged during heating by means such as an exhaust fan. It was necessary to take measures such as lowering it.

Therefore, as a simple system configuration, warm air is discharged from a cooling duct of a heat pump type air conditioner, while an electric heater under a seat is heated to raise the vehicle interior temperature to a desired temperature in a short time. What has been built.

[0006]

However, in order to raise the indoor temperature of the vehicle to a desired temperature in a short time, a conventional vehicle in which a heat pump type air conditioner and a heating heater mounted on the vehicle are operated in combination. In the case of air conditioning systems for automobiles, the warm air exhausted by the heat pump air conditioner concentrates on the ceiling surface during the combined operation, so passengers may complain that their heads are hot during the commercial operation of railway vehicles. high.

This problem will be described with reference to FIG.

FIG. 10 is a sectional view of the vehicle 1 and a distribution diagram of the indoor temperature of the vehicle 1 when the under-seat heater and the heat pump type air conditioner are used together. The under-seat heater 3 warms the interior of the vehicle with the output 27 of the under-seat heater. Because of the natural circulation, the vicinity of the under-seat heater 3 is heated in a wide range. On the other hand, the heat pump air conditioner 2 outputs the output 2 of the heat pump air conditioner from the air outlet 7.
5, the return air 26 enters the heat pump type air conditioner 2 from the return port 6, and only the ceiling surface becomes warm.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to secure a configuration capable of raising the vehicle interior temperature to a desired temperature in a short time and to reduce passenger inconvenience. An object of the present invention is to provide an air conditioner for a vehicle that can eliminate pleasure.

[0010]

According to a first aspect of the present invention, there is provided an air conditioner for a vehicle which is operated in combination with a heat pump type air conditioner and a heater for heating provided in the vehicle. When a certain period of time has elapsed from the start of the combined operation, the heat pump type air conditioner is brought into an operation stop state, and a control means for operating only the heater for heating is provided.

According to a second aspect of the present invention, in the first aspect, forcible shut-off means for stopping the operation of the heat pump type air conditioner before a predetermined time has elapsed from the start of the combined operation. It is characterized by the following.

[0012] In a third aspect of the present invention based on the first aspect, when a powering command is issued from a cab master controller of the vehicle before a predetermined time has elapsed from the start of the combined operation, A means is provided for causing the heat pump air conditioner to stop operating in response to a powering command.

The fourth invention of the present invention is directed to the first to third inventions.
In the invention, a fan for diffusing the indoor air of the vehicle for a certain time from when the heat pump type air conditioner shifts to the operation stop state is provided.

The fifth invention of the present invention is directed to the first to fourth inventions.
In the invention, a fan for diffusing the indoor air of the vehicle at all times during operation of the heat pump air conditioner or intermittently during operation of the heat pump air conditioner is provided.

The sixth invention of the present invention is directed to the first to fifth embodiments.
In the invention, the outside temperature sensor for detecting the outside atmosphere temperature of the vehicle, and when the outside atmosphere temperature of the vehicle detected by the outside temperature sensor is lower than a set temperature, the heat pump air conditioner and the heating heater are operated. It is characterized in that means for enabling this is provided.

In the first aspect of the present invention described above,
When the indoor temperature of the vehicle is raised to a desired temperature in a short time by operating the heat pump type air conditioner and the heater for heating installed in the vehicle in combination, the heat pump type air conditioner is controlled by the control means in accordance with the temperature. The state shifts to the operation stop state, and only the heating heater continues the operation.

According to the second aspect of the present invention, when the indoor temperature of the vehicle is raised to a desired temperature in a short time by operating the heat pump air conditioner and the heater for heating installed in the vehicle in combination, the control is performed. Even before the fixed time set in the means has elapsed, the crew operates the forced off means,
The heat pump air conditioner shifts to the operation stop state, and only the heating heater continues to operate.

According to the third aspect of the present invention, when the indoor temperature of the vehicle is raised to a desired temperature in a short time by operating the heat pump type air conditioner and the heater for heating installed in the vehicle in combination, the operation is performed. Even before a certain time has elapsed from the start of the combined operation, when a powering command is issued from the cab master controller of the vehicle, the heat pump air conditioner shifts to an operation stop state in response to the powering command, Only the heater for heating continues the operation.

According to the fourth aspect of the present invention, the air is diffused by the fan in order to make the temperature distribution of the indoor air of the vehicle uniform over a certain period of time after the heat pump type air conditioner shifts to the operation stop state. Will be.

According to a fifth aspect of the present invention, the indoor air is distributed by a fan to make the temperature distribution of the indoor air of the vehicle uniform during the combined operation of the heat pump type air conditioner and the heater for heating. Will be diffused.

According to the sixth aspect of the present invention, the heat pump type air conditioner and the heater for heating can be operated only when the condition that the outside atmosphere temperature of the vehicle detected by the outside temperature sensor is lower than the set temperature is satisfied. When the outside atmosphere temperature of the vehicle is higher than the set temperature, the operation of the heat pump air conditioner and the heating heater is avoided.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples.

FIG. 1 is a schematic cross-sectional view of a first embodiment of a railway vehicle to which the vehicle air conditioner of the present invention is applied, and FIGS.
FIG. 2B is a circuit diagram of the vehicle air conditioner according to the first embodiment of the present invention, which relates to the railroad vehicle of the first example in FIG. 1.

The vehicle air conditioner according to the first embodiment of the present invention comprises:
In order to raise the indoor temperature of the vehicle 1 to a desired temperature in a short time, a configuration is basically provided in which the heat pump air conditioner 2 and the under-seat heater 3 mounted on the vehicle 1 are operated in combination. When the temperature inside the vehicle is lowered by the operation of the heating thermostat 8 provided in the vehicle shown in FIG.
When a is turned on and the under-seat heater 3 is turned on, the under-seat heater 3 is turned off when the temperature inside the vehicle rises. 4 is a seat, 6 is an air conditioner return port, and 7 is an air outlet. The main circuit 20 supplies power to the heat pump type air conditioner 2 and the under-seat heater 3, and the control circuit 30 controls the main circuit 20.

The main circuit 20 is configured as shown in FIG. 2A, and the control circuit 30 is configured as shown in FIG. 2B. Therefore, the contact 11 of the on-delay timer 10 is turned off for a specified operation time instructed by the on-delay timer 10 (for example, during a period of 30 minutes from the start of the combined operation).
Since the auxiliary relay 12 for the heat pump air conditioner 2 is maintained in a demagnetized state because it is maintained in the F state, the a contact 13a of the auxiliary relay 12 is turned off and the b contact 13b is turned on. Then, the contactor auxiliary relay 14 is excited to drive the heat pump type air conditioner 2.
4a turns ON. Therefore, only for the specified operating hours,
The heat pump type air conditioner 2 is driven using the main power supply 100 as a power supply. However, since the a-contact 13a of the auxiliary relay 12 functions as a self-holding circuit that does not excite the auxiliary relay 14 for the contactor so that the heat pump air conditioner 2 does not operate again after the heat pump type air conditioner 2 has been operating for a predetermined time, the above-mentioned specified operating time elapses. It is turned ON. Then, the contact b is turned off and the contactor 14a is also turned off, so that the drive of the heat pump type air conditioner 2 is avoided.

As described above, in the first embodiment of the present invention, the on-delay timer 10
Until the designated time elapses, the heat pump air conditioner 2 and the under-seat heater 3 are operated in combination, and thereafter the heat pump air conditioner 2 is disconnected from the main power supply 100 by turning off the contactor 14a. The heat pump air conditioner 2 is not turned on until the operation is returned to the state before the start of operation.

FIGS. 3 (a) and 3 (b) are circuit diagrams of a vehicle air conditioner according to a second embodiment of the present invention relating to the railway vehicle of the first example of FIG.

A vehicle air conditioner according to a second embodiment of the present invention comprises:
Similar to the first embodiment, in order to raise the indoor temperature of the vehicle 1 to a desired temperature in a short time, the heat pump air conditioner 2 and the under-seat heater 3 mounted on the vehicle 1 are operated in combination. In preparation.

The main circuit 20 is configured as shown in FIG. 3A, and the control circuit 30 is configured as shown in FIG. 3B. Therefore, normally, only during the specified operation time instructed by the on-delay timer 10, the contact 11 of the on-delay timer 10 is turned off, the a-contact 13a of the auxiliary relay 12 for the heat pump air conditioner 2 is turned off, and the b-contact 13b is turned on. When the contactor 14a is turned on, the contactor auxiliary relay 14 is excited, and the contactor 14a for driving the heat pump air conditioner 2 is turned on.
N. Therefore, the heat pump air conditioner 2 is driven using the main power supply 100 as a power supply only during the designated operation time.
However, since the forced off switch 15 is provided in parallel with the a contact 13a of the auxiliary relay 12, even if the operation time is within the designated operation time instructed by the on-delay timer 10, when the crew turns on the forced off switch 15, Auxiliary relay 12
The contactor auxiliary relay 14 is turned off by turning on the a contact 13a and turning off the b contact 13b, so that the heat pump type air conditioner 2 is in an operation stop state thereafter. Note that, in FIG. 3, portions denoted by the same reference numerals as those in FIG. 2 indicate corresponding portions.

FIGS. 4A and 4B are circuit diagrams of a vehicle air conditioning system according to a third embodiment of the present invention relating to the first example of the railway vehicle shown in FIG.

A vehicle air conditioner according to a third embodiment of the present invention comprises:
Similar to the first embodiment, in order to raise the indoor temperature of the vehicle 1 to a desired temperature in a short time, the heat pump air conditioner 2 and the under-seat heater 3 mounted on the vehicle 1 are operated in combination. In preparation.

The main circuit 20 is configured as shown in FIG. 4A, and the control circuit 30 is configured as shown in FIG. 4B. For this reason, the contactor auxiliary relay 14 is normally operated by the contact 11 of the on-delay timer 10 and the a-contact 13a and the b-contact 13b of the auxiliary relay 12 for the heat pump air conditioner 2 only during the specified operation time commanded by the on-delay timer 10. And the contactor 14a for driving the heat pump type air conditioner 2 is turned on, so that the heat pump type air conditioner 2 is driven using the main power supply 100 as a power source only during the designated operation time. However, when a powering command is issued from a cab master controller (not shown) of the vehicle, a powering command operation switch 16 that is turned on in response to the powering command is provided in parallel with the a-contact 13 a of the auxiliary relay 12. Therefore, even within the designated operation time instructed by the on-delay timer 10, the contact b for the auxiliary relay 12 is turned off by receiving the powering command output by the cab master controller of the vehicle and turning off the b-contact 13b of the auxiliary relay 12. Since the auxiliary relay 14 is turned off, the operation of the heat pump air conditioner 2 is stopped thereafter. Note that, in FIG. 4, portions denoted by the same reference numerals as those in FIG. 2 indicate corresponding portions.

FIG. 5 is a schematic sectional view of a second embodiment of a railway vehicle to which the vehicle air conditioner of the present invention is applied, and FIGS.
(B) is a circuit diagram in the vehicle air-conditioning system of the fourth embodiment of the present invention relating to the railroad vehicle of the second example of FIG. In FIG. 5, the portions denoted by the same reference numerals as those in FIG. 1 indicate the corresponding portions.

A vehicle air conditioner according to a fourth embodiment of the present invention comprises:
Similar to the first embodiment, in order to raise the indoor temperature of the vehicle 1 to a predetermined temperature in a short time, the heat pump air conditioner 2 and the under-seat heater 3 installed in the vehicle 1 are operated in combination. In preparation. Further, a fan 5 for diffusing indoor air of the vehicle 1 is provided. The main circuit 40 includes the heat pump type air conditioner 2, the heater 3 under the seat, the fan 5
The control circuit 50 supplies power.
0 is controlled.

The main circuit 40 is configured as shown in FIG. 6A, and the control circuit 50 is configured as shown in FIG. 6B. Therefore, the contact 11 of the on-delay timer 10 and the a-contact 13a of the auxiliary relay 12 for the heat pump air conditioner 2 are normally turned off and the b-contact 13b is turned on only during the specified operation time commanded by the on-delay timer 10. As a result, the contactor auxiliary relay 14 is excited, and the contactor 14a for driving the heat pump air conditioner 2 is turned ON.
Are driven using the main power supply 100 as a power supply. Further, when a powering command is issued from the cab master controller of the vehicle body, the powering command operation switch 16 is turned on, so that the contactor auxiliary relay 14 is turned off, and the heat pump air conditioner 2 is in an operation stop state.

By the way, when a specified operation time instructed by the on-delay timer 10 has elapsed, the a-contact 13c of the auxiliary relay 12 is turned on. As a result, the auxiliary contact 21 of the on-delay timer 20 is turned on, the fan drive contactor auxiliary relay 22 is excited only for a predetermined time, and the fan drive contactor 22a is turned on. Then, the fan 5 is driven until the predetermined time elapses. Thereby, the warm air concentrated near the ceiling surface of the vehicle 1 is diffused and lowered toward the floor surface as in the flow 23 of the warm air in FIG. 5, so that in the internal space of the vehicle, as shown in FIG. It becomes a temperature distribution characteristic. In FIG. 6, the same reference numerals as those in FIG. 2 denote corresponding parts.

FIGS. 8A and 8B are circuit diagrams of a vehicle air conditioner according to a fifth embodiment of the present invention relating to the railroad vehicle of the second example of FIG.

A vehicle air conditioner according to a fifth embodiment of the present invention comprises:
Similar to the fourth embodiment, in order to raise the indoor temperature of the vehicle 1 to the desired temperature in a short time, the heat pump air conditioner 2 and the under-seat heater 3 mounted on the vehicle body 1 are operated in combination. In preparation. Further, a fan 5 for diffusing indoor air of the vehicle 1 is provided.

The main circuit 40 is configured as shown in FIG. 8A, and the control circuit 50 is configured as shown in FIG. 8B. Therefore, the contact 11 of the on-delay timer 10 and the a contact 13 of the auxiliary relay 12 for the heat pump type air conditioner 2 over the designated operation time commanded by the on-delay timer 10
When a is turned off and the b contact 13b is turned on,
Since the auxiliary relay for contactor 14 is excited to turn on the contactor 14a for driving the heat pump type air conditioner 2, the heat pump type air conditioner 2 is driven using the main power supply 100 as a power source only for the designated operation time.

Further, when the heat pump type air conditioner 2 is driven during the designated operation time instructed by the on-delay timer 10, the contactor 14a causes the fan 5 to operate the main power supply 1
00, the fan 5 is driven using the main power supply 100 as a power supply, and the indoor air of the vehicle 1 is diffused. Therefore, the temperature distribution of the indoor air of the vehicle 1 is improved. Further, since the powering command operation switch 16 is provided in parallel with the a contact 13a of the auxiliary relay 12, when the powering command is issued from the cab master controller of the vehicle, the contactor 14a is turned off.
Then, the drive of both the heat pump type air conditioner 2 and the fan 5 is stopped. In the present embodiment, the fan 5 is constantly driven while the heat pump air conditioner 2 is operating, but the fan 5 may be intermittently driven during the operation.

FIGS. 9A and 9B are circuit diagrams of a vehicle air conditioner according to a sixth embodiment of the present invention relating to the railroad vehicle of the second example of FIG.

A vehicle air conditioner according to a sixth embodiment of the present invention comprises:
Similar to the fourth embodiment, in order to raise the indoor temperature of the vehicle 1 to the desired temperature in a short time, the heat pump air conditioner 2 and the under-seat heater 3 mounted on the vehicle 1 are operated in combination. In preparation. Further, a fan 5 for diffusing indoor air of the vehicle 1 is provided.

The main circuit 40 is configured as shown in FIG. 9A, and the control circuit 50 is configured as shown in FIG. 9B. Therefore, the sensor switch 24 itself is turned ON only when the condition that the external ambient temperature of the vehicle 1 detected by the sensor switch 24 also serving as the outside vehicle temperature sensor is lower than the set temperature is satisfied.
In the N state, the operation of the heat pump type air conditioner 2 and the like as in the fourth embodiment described with reference to FIG. 6 becomes possible. Therefore, when the outside atmosphere temperature of the vehicle 1 is higher than the set temperature, the sensor switch 24 is not configured as a contact and the heat pump air conditioner 2 and the like are not operated.

Although the control of the heat pump type air conditioner 2 and the under-seat heater 3 by the relay logic has been described in the present invention, the same effect can be obtained by controlling using a microcomputer or a sequencer.

[0045]

As described above, according to the first aspect of the present invention, after a lapse of a predetermined time during which the indoor temperature of a vehicle is raised to a desired temperature in a combined operation of a heat pump type air conditioner and a heating heater. Since the heat pump type air conditioner shifts to the operation stop state and only the heating heater continues to operate, it is possible to avoid a complaint that the passenger's head is hot and uncomfortable during the commercial operation of the railway vehicle.

According to the second aspect of the present invention, a forced off switch for stopping the operation of the heat pump type air conditioner is added to the first aspect of the present invention. When it is determined by the crew that the interior temperature of the vehicle is in a passenger uncomfortable state, the forced-off switch is manually operated to stop the operation of the heat pump air conditioner, thereby avoiding the passenger uncomfortable state.

According to the third aspect of the present invention, a means for stopping the operation of the heat pump air conditioner in response to the powering command is added to the first aspect of the present invention. When a powering command is issued from the master controller, even before a certain period of time has elapsed, the operation of the heat pump air conditioner is stopped at the same time as the operation of the vehicle is started, so that discomfort to passengers can be avoided.

According to a fourth aspect of the present invention, there is provided the fan according to the first to third aspects, wherein the fan for diffusing the indoor air of the vehicle for a certain period from when the heat pump type air conditioner shifts to the operation stop state. Since it is added, the temperature distribution of the indoor air of the vehicle can be improved from the time when the combined operation of the heat pump air conditioner and the heating heater is shifted to the operation of only the heating heater.

According to the fifth aspect of the present invention, a fan for constantly or intermittently diffusing the indoor air of the vehicle during operation of the heat pump type air conditioner is added to the first to fourth aspects. Therefore, the temperature distribution of the indoor air of the vehicle can be improved during the combined operation of the heat pump air conditioner and the heater for heating.

According to a sixth aspect of the present invention, there is provided a heat pump air conditioner and a heating heater according to the first to fifth aspects, provided that the condition that the outside atmosphere temperature of the vehicle is lower than a set temperature is not satisfied. Since a means for preventing the vehicle from being driven is added, heating that gives discomfort to passengers is not performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vehicle body of a first example of a railway vehicle to which the vehicle air conditioner of the present invention is applied.

FIG. 2 is a circuit diagram of the vehicle air conditioner according to the first embodiment of the present invention.

FIG. 3 is a circuit diagram of a vehicle air conditioner according to a second embodiment of the present invention.

FIG. 4 is a circuit diagram of a vehicle air conditioner according to a third embodiment of the present invention.

FIG. 5 is a vehicle body cross-sectional view of a second example of a railway vehicle to which the vehicle air conditioner of the present invention is applied.

FIG. 6 is a circuit diagram of a vehicle air conditioner according to a fourth embodiment of the present invention.

FIG. 7 is a temperature distribution characteristic diagram of indoor air of a vehicle obtained in a fourth embodiment of the present invention.

FIG. 8 is a circuit diagram of a vehicle air conditioning system according to a fifth embodiment of the present invention.

FIG. 9 is a circuit diagram of a vehicle air conditioning system according to a sixth embodiment of the present invention.

FIG. 10 is a diagram used to describe a conventional vehicle air conditioning system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Heat pump type air conditioner 3 Heater under seat 4 Seat 5 Fan 6 Air conditioner return port 7 Air conditioner outlet 8 Heating thermostat 9 Auxiliary relay for contactor for heater under seat 9a Auxiliary relay contactor for contactor for heater under seat 10 On-delay timer 11 On-delay timer contact 12 Auxiliary relay 13 Auxiliary relay contact 13a, 13c A-contact of auxiliary relay 13b B-contact of auxiliary relay 14 Auxiliary relay for contactor 14a Auxiliary relay contactor for contactor 15 Forced off switch 16 Powering command operation switch Reference Signs List 20 on-delay timer 21 on-delay timer contact 22 auxiliary relay for contactor 22a auxiliary relay contactor for contactor 23 heat pump air conditioner output flow 24 sensor switch 25 heat pump air conditioner output 26 heat pump type Air conditioner input (return air) 27 Heater output 100 Main power supply 200 Air conditioning control power supply

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiyuki Onishi 1-1-1 Shibaura, Minato-ku, Tokyo Inside Toshiba head office

Claims (6)

[Claims] 1. An air conditioner for a vehicle, which operates in combination with a heat pump air conditioner mounted on a ceiling of a vehicle and a heater for heating provided under a seat, when a predetermined time has elapsed from the start of the combined operation. An air conditioner for a vehicle, comprising: a control unit that stops the operation of the heat pump type air conditioner and operates only the heater for heating. 2. A forced cut-off means for stopping the operation of the heat pump type air conditioner before a predetermined time has elapsed from the start of the combined operation.
An air conditioner for a vehicle as described in the above. 3. When a powering command is issued from a cab master controller of a vehicle before a predetermined time has elapsed from the start of the combined operation, the operation of the heat pump air conditioner is stopped in response to the powering command. The vehicle air conditioner according to claim 1, further comprising means for setting a state. 4. A fan for diffusing indoor air of a vehicle for a predetermined time from when the heat pump type air conditioner shifts to an operation stop state.
4. The air conditioner for a vehicle according to any one of claims 3 to 3. 5. A fan for diffusing indoor air of a vehicle at all times during operation of the heat pump air conditioner or intermittently during operation of the heat pump air conditioner. An air conditioner for a vehicle according to any one of the claims. 6. An outside temperature sensor for detecting an outside atmosphere temperature of a vehicle, and when the outside atmosphere temperature of the vehicle detected by the outside temperature sensor is lower than a set temperature, the heat pump air conditioner and the heater for heating are provided. The vehicle air conditioner according to any one of claims 1 to 5, further comprising means for enabling operation.