JP2008201224A - Cab interior temperature control method, cab interior temperature control device, and vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab interior temperature control method for reducing a change in temperature inside a cab caused by the opening/closing of an opening/closing means, and a cab interior temperature control device used for performing the method. <P>SOLUTION: A temperature sensor 64 detecting cab inside/outside air temperature is arranged in the cab. An opening/closing sensor 65 detecting the opening/closing condition of the opening/closing means, and a flow condition detecting means detecting a wind flow state in each opening are arranged in each opening of the cab. A control section 63 estimates the change in the temperature inside of the cab after the opening/closing means is opened/closed from the results detected by the sensor and detecting means before the temperature is actually changed, compares the estimated temperature with the set temperature of an air conditioner 37 provided inside of the cab and automatically controllable, and controls the setting condition of the air conditioner 37 to eliminate a temperature difference. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cab internal temperature control method, a cab internal temperature control device used for carrying out this method, and a vehicle equipped with this cab internal temperature control device.

  The cab of a vehicle such as a hydraulic excavator is provided with a front window, a door, a skylight, and a door window opening / closing means, and the cab is provided with a seat on which an operator sits, a monitor, an operation switch, an air conditioner, etc. It has been.

  An air conditioner for managing the temperature inside the cab is provided behind the seat and can be controlled automatically. During automatic control operation, the air conditioner selects the air volume and air temperature, the cab interior is kept at the set temperature, and a comfortable work space can be maintained.

  However, in the case of a hydraulic excavator or the like, the opening / closing means is often opened and closed by getting on and off the aircraft during work, and particularly when the opening / closing means is opened, the cab inside air temperature is affected by the cab outside air temperature and changes rapidly. In response to this temperature change, the air conditioner sensor detects the temperature change after the temperature change has occurred, and it tries to quickly return to the set temperature by adjusting the air volume and air temperature of the air conditioner. However, the uncomfortable working space cannot be resolved immediately and a great load is applied to the air conditioner.

In contrast, the cab opening and closing means is provided with a sensor that detects the opening and closing state, and when it is in the closed state, the temperature is controlled by automatic control operation. In some cases, the air conditioner switches to fixed operation and the air volume and air temperature of the air conditioner are limited according to the data stored in the memory (see, for example, Patent Document 1).
Japanese Patent No. 3127204 (2nd page, FIG. 4)

  In such a cab internal temperature control device, the fan and motor of the air conditioner can be controlled under a predetermined condition according to the open / close state of the opening / closing means, but the cab environment such as temperature change due to opening / closing of the opening / closing means. It cannot respond to changes in temperature, and it cannot respond quickly to temperature changes that occur inside the cab.

  The present invention has been made in view of the above points, and can control to reduce a change by predicting a temperature change inside the cab body due to opening and closing of the opening and closing means, and can maintain a comfortable work space. An object is to provide a cab internal temperature control method, a cab internal temperature control device, and a vehicle including the cab internal temperature control device.

  According to the first aspect of the present invention, the inside air temperature inside the cab and the outside air temperature outside the cab, and the change in the flow state of the wind at the opening due to opening and closing of the opening and closing means that opens and closes the opening provided in the cab. The air conditioner detects the temperature change of the cab air temperature due to the opening and closing of the opening and closing means, compares the temperature setting value of the air conditioner with the expected temperature after opening and closing of the opening and closing means, and eliminates the temperature difference. It is the cab internal temperature control method which controls the setting conditions.

  According to a second aspect of the present invention, in the cab internal temperature control method according to the first aspect, the wind flow state is determined by the opening temperature and the wind speed in the opening.

  According to a third aspect of the present invention, there is provided an open / close sensor for detecting an open / closed state of an open / close means for opening / closing an opening provided in the cab, a temperature sensor for detecting an inside air temperature and an outside air temperature inside the cab, Wind flow status detection means for detecting changes in the wind flow status at the opening due to opening / closing of the opening / closing means, an air conditioner capable of automatically controlling at least the volume and temperature of the wind supplied into the cab, and opening / closing Predict the temperature change inside the cab after opening and closing of the opening and closing means by the detection results from the sensor, temperature sensor and flow status detection means, compare the temperature set value of the air conditioner with the temperature after the expected temperature change, It is a cab internal temperature control apparatus provided with the control part which controls the setting conditions of an air conditioner so that a temperature difference may be eliminated.

  According to a fourth aspect of the present invention, in the cab internal temperature control device according to the third aspect, the flow state detection means is provided in each of the opening / closing means of the plurality of openings that are opened in a plurality of directions, and each opening is provided. It is equipped with an opening temperature sensor and a wind speed / air direction sensor for detecting at least the opening temperature and wind speed and direction of the passing wind, and the control unit detects from the open / close sensor, temperature sensor, opening temperature sensor and wind speed / wind direction sensor. As a result, the temperature inside the cab after opening / closing of the opening / closing means is predicted, and the setting condition of the air conditioner is set so as to eliminate the temperature difference by comparing the temperature setting of the air conditioner with the temperature after the predicted temperature change. It is something to control.

  The invention described in claim 5 comprises an airframe having a traveling function, a cab provided on the airframe, and a cab internal temperature control device according to claim 3 or 4 provided on the cab. It is a vehicle.

  According to the invention described in claim 1, from the inside air temperature inside the cab and the outside air temperature outside the cab, and the change in the flow state of the wind at the opening by opening and closing the opening and closing means for opening and closing the cab opening, Before the inside air temperature actually changes, the temperature change inside the cab after opening and closing of the opening and closing means is predicted, and the set temperature of the air conditioner is compared with the expected temperature to eliminate the temperature difference. By controlling the setting conditions, the speed response performance of the air conditioner with respect to changes in the cab environment can be improved, and the temperature change inside the cab after opening and closing of the opening and closing means can be reduced.

  According to the invention described in claim 2, by detecting the opening temperature and the wind speed at the opening due to opening and closing of the opening and closing means, it is possible to accurately change the flow state of the wind at the opening due to opening and closing of the opening and closing means. The temperature change inside the cab due to opening / closing of the opening / closing means can be accurately predicted from the inside air temperature and the outside air temperature and the change in the flow state of the wind.

  According to the third aspect of the present invention, the cab internal temperature control device includes an open / close sensor that detects the open / close state of the open / close means, a temperature sensor that detects the inside air temperature of the cab and the outside air temperature of the cab, and the open / close means. The air flow condition detection means for detecting the change in the air flow condition at the opening due to the opening and closing of the cab, the inside air temperature of the cab, the outside temperature of the cab, the opening and closing state of the opening and closing means, the wind flow at the opening The situation can be detected. Then, the control unit predicts a temperature change inside the cab after opening / closing of the opening / closing means before the inside air temperature actually changes from the detection results from the respective sensors and the flow state detecting means, and is provided inside the cab. Compares the set temperature of the air conditioner that can automatically control at least the temperature and air flow and the temperature after the expected temperature change inside the cab, and controls the setting conditions of this air conditioner so as to eliminate the temperature difference Thus, it is possible to increase the speed response of the air conditioner with respect to changes in the cab environment, and to reduce temperature changes inside the cab due to opening and closing of the opening / closing means provided in the cab.

  According to the invention described in claim 4, the flow condition detection means is provided in each of the opening / closing means of the plurality of openings that are opened in a plurality of directions of the cab, and at least the opening temperature of the wind passing through each opening. By providing the opening temperature sensor and the wind speed / wind direction sensor for detecting the wind speed and the wind direction, the opening temperature, the wind speed, and the wind direction at each opening can be detected.

  The control unit predicts the influence of the wind on the cab air temperature from the cab air temperature, the cab air temperature, the opening temperature at each opening, the wind speed, the wind direction, etc. Precisely predict the temperature change in the air conditioner, compare the set temperature of the air conditioner with the predicted temperature inside the cab and accurately control the setting condition of the air conditioner to eliminate the temperature difference be able to.

  According to the fifth aspect of the present invention, the cab is provided on the airframe having a traveling function, and the cab includes the cab internal temperature control device, so that the influence of wind on the airframe during traveling is large. Even in this case, the temperature change inside the cab that occurs when the cab opening and closing means is opened and closed can be predicted, and by controlling the air conditioner to respond to this temperature change, the cab opening and closing means can be opened and closed. The temperature change can be reduced, and the inside of the cab can be kept comfortable.

  Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.

  FIG. 5 shows a hydraulic excavator 11 as a work machine. The hydraulic excavator 11 includes a lower traveling body 12 and an airframe 14 composed of an upper revolving body 13 which is turnably provided on the lower traveling body 12. The vehicle 17 includes a cab 15 provided on the upper swing body 13 and a cab internal temperature control device 16 provided on the cab 15. On the upper swing body 13, a working device 18 that is operated by an operating hydraulic pressure as a working fluid pressure is installed.

  As shown in either FIG. 2 or FIG. 3, the cab 15 has a cab body 19 provided with an opening 21 for raising / lowering, a front opening 22 and a ceiling opening 23 as openings. The parts 21, 22, and 23 are provided with a door 24 as an opening / closing means, a front window 25, and a skylight 26 that can be opened and closed, and the door 24 is provided with a door window opening 27 as an opening. The window opening 27 is provided with a pair of door windows 28 that can be opened and closed as opening and closing means.

  Sensor openings 31, 32, 33, and 34 are provided in the openings 21, 22, 23, and 27, respectively. These sensor mounting portions 31, 32, 33, and 34 are examples, and are not limited to the illustrated positions. The door 24 and the front window 25 can only be fully opened or fully closed, and the door window 28 and the skylight 26 can be opened and closed.

  Inside the cab 15, there is a seat 35 on which an operator sits in the center, and in front of the seat 35 is a monitor 36 that displays operation information of the excavator 11 such as temperature information, and at least the air temperature that manages the cab inside air temperature. Further, a face outlet 38 for an operator of the air conditioner 37 capable of automatically controlling the air volume, a front window outlet 39 for preventing the glass of the front window 25 from being fogged, and the like are provided.

  Further, on both sides of the seat 35, an operation lever 41 for operating the upper swing body 13 and the work device 18 is provided, and on the rear side of the seat 35, an air conditioner main body 42 is provided, and this air conditioner main body Above 42, there are provided an upper outlet 43 to the operator side, an outlet 44 to the upper side, and the like.

  FIG. 1 shows an outline of the cab internal temperature control device 16, and an internal air temperature sensor 45 that detects an internal air temperature inside the cab 15 is provided in the air conditioner 37, and an external air temperature sensor 46 that detects an external air temperature outside the cab 15. Is provided outside the cab body 19 where it is not directly exposed to sunlight.

  The sensor mounting portion 31 includes a door opening / closing sensor 47 that detects the opening / closing state of the door 24 in the lifting opening 21 provided with the door 24, and a door temperature that detects the opening temperature of the lifting opening 21. A sensor 48, a door wind speed sensor 49 for detecting the wind speed, and a door wind direction sensor 50 for detecting the wind direction are provided, and other opening and closing means include a front window opening / closing sensor in the sensor mounting portion 32 provided in the front opening 22. 51, a front window temperature sensor 52, a front window wind speed sensor 53, a front window wind direction sensor 54 are provided, and a sensor mounting portion 33 provided in the ceiling surface opening 23 includes a skylight opening / closing sensor 55, a skylight temperature sensor 56, a skylight A wind speed sensor 57 and a skylight direction sensor 58 are provided, and a sensor mounting portion 34 provided in the door window opening 27 includes a door window opening / closing sensor 59, a door window temperature sensor 60, a door window wind speed sensor 61, and a door window wind direction sensor. 62 is provided.

  As shown in FIG. 1, the input unit of the control unit 63 includes an inside air temperature sensor 45 that detects a cab inside air temperature and a cab outside air temperature, a temperature sensor 64 that includes an outside air temperature sensor 46, and each opening 21. 22, 22, 23, 27, door 24, front window 25, skylight 26, door opening / closing sensor 47 for detecting the opening / closing state of the door window 28, front window opening / closing sensor 51, skylight opening / closing sensor 55, door window opening / closing sensor 59 Opening / closing sensor 65, door temperature sensor 48 for detecting opening temperature, front window temperature sensor 52, skylight temperature sensor 56, opening temperature sensor 66 comprising door window temperature sensor 60, door wind speed sensor for detecting wind speed 49, wind speed sensor 67 comprising front window wind speed sensor 53, skylight speed sensor 57, door window wind speed sensor 61, door wind direction sensor 50 for detecting wind direction, front window wind direction sensor 54, skylight wind direction sensor 58, door window wind direction sensor 62 wind Sensor 68 is connected to the output portion of the controller 63, together with the monitor 36, the air mix damper 69 of air conditioner 37, the compressor 70, and an actuator such as a motor for driving the fan 71 is connected.

  Then, the control unit 63 detects the detection results from the open / close sensor 65, the opening temperature sensor 66, the wind speed sensor 67, and the wind direction sensor 68 provided in the temperature sensor 64 and each of the sensor mounting portions 31, 32, 33, and 34, respectively. Therefore, the temperature change after opening / closing of the door 24, front window 25, skylight 26, and door window 28 is predicted by computational fluid analysis (hereinafter referred to as CFD fluid analysis) before the inside air temperature inside the cab 15 actually changes. Then, the setting temperature of the air conditioner 37 is controlled so as to eliminate the temperature difference by comparing the set temperature of the air conditioner 37 with the predicted temperature.

  The air conditioner 37 whose setting conditions are controlled by the control unit 63 so as to eliminate the error between the set temperature and the expected temperature is adjusted by the air mix damper 69 by adjusting the ratio of cool air to warm air. Or by changing the operating time of the compressor 70 according to the on / off time of the clutch connected to the compressor 70, the cold air blowing temperature is adjusted, and the rotational speed of the fan 71 is adjusted to adjust the blowing air volume. Further, the monitor 36 displays the cab air temperature, the set temperature of the air conditioner 37, and the like, and has an input operation function such as selecting an automatic control mode or a fixed control mode of the air conditioner 37.

  Since the door 24 and the front window 25 can only be fully opened or fully closed, the installed door opening / closing sensor 47 and the front window opening / closing sensor 51 detect only opening and closing, and are physically opened and closed using a limit switch. What detects it, what detects opening and closing without contact using a proximity switch, etc. are used.

  The skylight opening / closing sensor 55 and the door window opening / closing sensor 59 provided on the skylight 26 and the door window 28 may be sensors that detect only opening / closing, such as the door opening / closing sensor 47 and the front window opening / closing sensor 51. Since the opening / closing amount of the door 26 and the door window 28 can be adjusted, the opening / closing state of the skylight 26 and the door window 28 can be detected with higher accuracy by using a sensor for detecting the opening / closing amount such as a potentiometer.

  The opening temperature sensor 66 and the wind speed sensor 67 are sensors using, for example, a thermocouple, and accurately detect the opening temperature and the wind speed at each of the openings 21, 22, 23, and 27 by using these sensors. It can detect the flow of wind.

  The wind direction sensor 68 is formed by arranging, for example, a plurality of wind speed sensors such as thermocouples in a plurality of directions.

  Accordingly, since the wind speed sensor 67 and the wind direction sensor 68 can be formed integrally, this is referred to as a wind speed / wind direction sensor 72. The wind speed / wind direction sensor 72 includes a case where only the wind speed is detected, a case where only the wind direction is detected, and a case where the wind speed and the wind direction are detected.

  Further, the wind direction sensor 68 is provided in each of the openings 21, 22, 23, and 27, so that the wind direction in each of the openings 21, 22, 23, and 27 can be detected more accurately. , 23, and 27, even if the wind direction sensor 68 is not provided, a wind direction sensor is provided outside the cab body 19, or each opening portion is detected by the detection result of the wind speed sensor 67 provided in each opening portion 21, 22, 23, 27. The wind direction may be detected by calculating the wind direction from the difference in wind speed between the two.

  Next, a control example of the cab internal temperature control method of the embodiment will be described with reference to the flowchart shown in FIG.

(Step S1)
The control unit 63 confirms the operating state of the air conditioner 37, such as on / off, automatic control mode, fixed control mode, and air blowing mode.

(Step S2)
The control unit 63 determines whether or not the automatic control mode of the air conditioner 37 is activated.If the automatic control mode is not activated, the control unit 63 returns to step S1, and if the automatic control mode is activated. The process proceeds to step S3.

(Step S3)
The control unit 63 detects the cab inside air temperature and the cab outside air temperature by the inside air temperature sensor 45 provided in the air conditioner 37 and the outside air temperature sensor 46 provided in the cab body 19.

(Step S4)
The control unit 63 includes an opening / closing sensor 65 provided in each of the doors 24, the front window 25, the skylight 26, and the door window 28, which are opening / closing means of the respective openings 21, 22, 23, 27 provided in the cab body 19. The open / close state of each open / close means is detected.

(Step S5)
The control unit 63 determines whether or not any one or more of the door 24, the front window 25, the skylight 26, and the door window 28 are open, and if all are closed, the process returns to step S1, and either If one or more are open, go to step S6.

(Step S6)
The control unit 63 measures the opening temperature, the wind speed, and the wind direction in each of the openings 21, 22, 23, and 27 by using the opening temperature sensor 66, the wind speed sensor 67, and the wind direction sensor 68 provided in each sensor mounting portion. Changes in the flow of wind at each opening 21, 22, 23, 27 are detected.

(Step S7)
The control unit 63 calculates the difference between the cab inside air temperature and the cab outside air temperature in addition to the opening temperature data of each of the openings 21, 22, 23, and 27.

(Step S8)
The control unit 63 analyzes and inputs the cab inside air temperature, the cab outside air temperature, its temperature difference, the opening temperature, the wind speed, and the wind direction at each opening 21, 22, 23, 27 before the cab inside temperature actually changes. As a condition, a temperature change inside the cab 15 after opening / closing the door 24, the front window 25, the skylight 26, and the door window 28 is predicted by CFD fluid analysis using a temperature prediction function.

(Step S9)
The control unit 63 compares the temperature setting value of the air conditioner 37 in the automatic control mode with the predicted temperature inside the cab 15 after opening and closing of the door 24, the front window 25, the skylight 26, and the door window 28 by CFD fluid analysis, Calculate the error between the set temperature and the expected temperature.

(Step S10)
The control unit 63 controls the setting conditions such as the compressor clutch on / off time, the air mix ratio, and the fan rotation speed of the air conditioner 37 in the automatic control mode so as to eliminate the temperature difference calculated in step S9. Adjust the outlet temperature and air volume of the conditioner 37.

(Step S11)
The control unit 63 determines whether or not there is a change in the operating state of the air conditioner 37 or the opening / closing state of each opening / closing means in each opening 21, 22, 23, 27. Returning to S6, if there is a change, the process returns to step S1.

  Next, effects of the embodiment will be described.

  The cab inside air temperature and the cab outside air temperature, and the doors 24 that open and close the respective openings 21, 22, 23, and 27 of the cab 15, the front windows 25, the skylights 26, and the respective openings 21, 22, 23, which are opened and closed by the door windows 28, From the change in the wind flow situation at 27, the temperature change inside the cab 15 after opening / closing the door 24, front window 25, skylight 26, door window 28 is predicted before the cab air temperature actually changes By comparing the setting temperature of the air conditioner 37 with the expected temperature and controlling the setting conditions of the air conditioner 37 so as to eliminate the temperature difference, the door 24, the front window 25, the skylight 26, and the door window 28 The speed response of the air conditioner 37 with respect to changes in the cab environment due to opening and closing etc. can be improved, and temperature changes inside the cab 15 after opening and closing of the door 24, front window 25, skylight 26 and door window 28 can be reduced.

  By detecting the opening temperature, wind speed, and wind direction at each opening 21, 22, 23, and 27 by opening and closing the door 24, front window 25, skylight 26, and door window 28, the door 24, front window 25, and skylight 26 are detected. It is possible to accurately detect changes in the flow of wind at the openings 21, 22, 23, and 27 due to the opening and closing of the door window 28, and the cab inside air temperature and the cab outside air temperature and the openings 21, 22, 23, and 27 From the change of the wind flow situation, the temperature change of the cab air temperature due to the opening / closing of the door 24, the front window 25, the skylight 26, and the door window 28 can be accurately predicted.

  The cab internal temperature control device 16 includes an open / close sensor 65 that detects the open / closed state of the door 24, the front window 25, the skylight 26, and the door window 28 of each opening 21, 22, 23, 27 provided in the cab body 19, and Changes in wind flow at each opening 21, 22, 23, 27 due to opening / closing of door 24, front window 25, skylight 26, door window 28, and temperature sensor 64 for detecting the temperature inside the cab and the temperature outside the cab Wind flow status detection means for detecting the door 24, front window 25, skylight 26, door window 28 open / closed state, cab inside air temperature, cab outside air temperature, each opening 21, 22, 23, Can detect wind flow at 27.

  Then, from the detection results from the sensors and the flow state detection means, the control unit 63 determines that the door 24, the front window 25, the skylight 26, and the door window 28 by CFD fluid analysis before the cab inside air temperature actually changes. Estimate temperature change of cab inside air temperature after opening and closing, and set temperature of air conditioner 37 that can automatically control at least temperature and air volume provided inside cab 15 and expected temperature after temperature change inside cab 15 By comparing these, the setting conditions of the air conditioner 37 can be controlled so as to eliminate the temperature difference.

  The flow state detecting means includes a plurality of openings 21, 22, 23, 27 opened in a plurality of directions of the cab 15, the door 24, the front window 25, the skylight 26, and the sensor mounting portions 31, 32, 33 of the door window 28. 34, each of the openings 21, 22 is provided with an opening temperature sensor 66 and a wind speed sensor 67 for detecting at least the opening temperature and the wind speed of the wind passing through the openings 21, 22, 23, 27. , 23, 27 can detect the opening temperature and wind speed. Moreover, by providing the wind direction sensor 68 in each opening 21, 22, 23, 27, the wind direction in each opening 21, 22, 23, 27 can be detected accurately, and each opening 21, 22, The flow of wind passing through 23 and 27 can be detected. Note that the wind direction may be detected by providing a wind direction sensor outside the cab body 19 or calculating the wind direction from the difference in wind speed between the openings.

  Then, the control unit 63 detects the cab inside air temperature, the cab outside air temperature, the opening temperature at each opening 21, 22, 23, 27, the wind speed, and the wind direction from each sensor, so that the cab inside temperature is actually Before the change, the CFD fluid analysis accurately predicts the temperature change inside the cab 15 due to the opening / closing of the door 24, front window 25, skylight 26, and door window 28, and the set temperature of the air conditioner 37 and the expected cab The setting conditions of the air conditioner 37 can be accurately controlled so as to eliminate the temperature difference by comparing the temperature after the internal temperature change.

  In the vehicle 17 in which the cab 15 is provided on the airframe 14 having a traveling function, the cab 15 includes the cab internal temperature control device 16 so that the wind flow state with respect to the airframe 14 is easily changed during traveling, Even when the influence is large, the door 24, the front window 25, the skylight 26, and the door window 28 are opened and closed before the inside air temperature inside the cab 15 is actually changed. The cab air temperature after opening / closing the front window 25, skylight 26, and door window 28 can be predicted.

  Then, by comparing the set temperature of the air conditioner 37 with the expected temperature and controlling the air conditioner 37 so as to eliminate the temperature difference, the door 24, the front window 25 provided on the cab body 19 during traveling, The temperature change inside the cab 15 due to the opening and closing of the skylight 26 and the door window 28 can be reduced, and the inside of the cab 15 can be kept in a comfortable state.

  INDUSTRIAL APPLICABILITY The present invention is applicable to a vehicle equipped with a cab equipped with an air conditioner for temperature control and provided with an opening / closing means.

It is a block diagram which shows one Embodiment of the cab internal temperature control apparatus which concerns on this invention. It is a perspective view of a cab provided with the same control device. It is a perspective view inside a cab same as the above. It is a flowchart which shows the control example of the cab internal temperature control method which concerns on this invention. 1 is a side view showing an embodiment of a vehicle according to the present invention.

Explanation of symbols

14 Airframe
15 cab
16 Cab internal temperature controller
17 vehicles
21 Lifting opening as opening
22 Front opening as opening
23 Ceiling surface opening as opening
24 Door as opening and closing means
25 Front window as opening and closing means
26 Skylight as a means of opening and closing
27 Door window opening as opening
28 Door windows as opening and closing means
37 Air conditioning
63 Control unit
64 temperature sensor
65 Open / close sensor
66 Opening temperature sensor
67 Wind speed sensor
72 Wind speed sensor

Claims (5)

By detecting the inside air temperature inside the cab and the outside air temperature outside the cab, and the change in the flow of wind at the opening due to opening / closing of the opening / closing means for opening / closing the opening provided in the cab, Anticipating temperature changes in the inside air temperature,
Compare the temperature setting value of the air conditioner with the expected temperature after opening and closing of the opening and closing means,
A cab internal temperature control method characterized by controlling the setting conditions of the air conditioner so as to eliminate the temperature difference. The cab internal temperature control method according to claim 1, wherein the wind flow state is determined by an opening temperature and a wind speed at the opening. An opening / closing sensor for detecting an opening / closing state of an opening / closing means for opening / closing an opening provided in the cab;
A temperature sensor for detecting the inside air temperature inside the cab and the outside air temperature outside the cab,
Wind flow status detection means for detecting a change in wind flow status at the opening due to opening and closing of the opening and closing means;
An air conditioner capable of automatically controlling at least the volume and temperature of the wind supplied into the cab;
Based on the detection results from the open / close sensor, temperature sensor, and flow condition detection means, predict the temperature change inside the cab after opening / closing of the open / close means, and compare the temperature set value of the air conditioner with the expected temperature change And a control unit for controlling the setting conditions of the air conditioner so as to eliminate the temperature difference. The flow status detection means
Provided in each of the opening and closing means of the plurality of openings that are opened in a plurality of directions, at least the temperature and the wind speed of the wind passing through each opening, the opening temperature sensor and the wind speed and wind direction sensor for detecting the wind direction
The control unit
Based on the detection results from the open / close sensor, temperature sensor, opening temperature sensor, and wind speed / wind direction sensor, the temperature change inside the cab after opening / closing of the opening / closing means is predicted, and the set temperature of the air conditioner and the predicted temperature change are calculated. The cab internal temperature control device according to claim 3, wherein the setting condition of the air conditioner is controlled so as to eliminate the temperature difference. An aircraft equipped with a traveling function;
The cab provided on this aircraft,
A vehicle comprising: the cab internal temperature control device according to claim 3 or 4 provided on the cab.

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