CN115262685A - Cockpit pressure adjusting system and method, cockpit and working machine - Google Patents
Cockpit pressure adjusting system and method, cockpit and working machine Download PDFInfo
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- CN115262685A CN115262685A CN202110473699.3A CN202110473699A CN115262685A CN 115262685 A CN115262685 A CN 115262685A CN 202110473699 A CN202110473699 A CN 202110473699A CN 115262685 A CN115262685 A CN 115262685A
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 70
- 230000002829 reductive effect Effects 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 230000009467 reduction Effects 0.000 claims abstract description 3
- 230000033228 biological regulation Effects 0.000 claims description 26
- 238000007664 blowing Methods 0.000 claims description 16
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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- 238000009313 farming Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
- E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
Abstract
The invention relates to a pressure regulating system for a cockpit, a cockpit and a working machine comprising the same, and a cockpit pressure regulating method. The cockpit is provided with an air conditioner, the pressure adjusting system comprises an air supply device, a temperature sensor and a controller, wherein the air supply device sends air outside the cockpit into the cockpit to ensure positive pressure in the cockpit, and an adjusting valve is arranged in the air supply device; the controller is configured to determine whether to automatically adjust the opening degree of the regulating valve according to a difference between a measurement value of the temperature sensor and a predetermined comfort temperature when the air conditioner is opened. The invention realizes that the air output of the air supply device is reduced under the condition of needing rapid temperature rise/temperature reduction, optimizes the refrigeration/heating efficiency of the air conditioner on the premise of meeting the positive pressure requirement in the cockpit, and reduces the energy loss. The invention can also arrange a pressure sensor in the cockpit to ensure that the opening degree of the regulating valve is reduced on the premise of meeting the positive pressure requirement.
Description
Technical Field
The present invention relates to a pressure regulating system and a pressure regulating method for a cabin, and also relates to a cabin and a work machine including the pressure regulating system.
Background
Work machines, such as, for example, graders, loaders, dozers, excavators, etc., operate in a variety of work environments (e.g., construction sites, mines, farms, roads, etc.). Because the working environment of the working machine is severe, a large amount of dust or sand may be blown out, and in order to ensure the quality of air breathed by a driver in the cockpit, one method is to maintain positive pressure in the cockpit of the working machine to prevent dust and the like from entering the cockpit. The positive pressure inside the cabin (i.e. the difference between the air pressure inside the cabin and the air pressure outside the cabin) should for example be guaranteed to be greater than 50Pa, according to the regulations of the relevant standards, such as ISO 10263.
For this purpose, in the prior art, an air supply device arranged on the cockpit is used to supply air into the cockpit to ensure positive pressure in the cockpit. The air supply device can also be in the form of a pre-cleaner, which delivers filtered fresh air to the cockpit through its air cleaning function.
Meanwhile, in order to ensure the comfort of the driver, an air conditioner is usually arranged in the cockpit. Through the arrangement of the air conditioner and the air supply device, a driver in the cab can still enjoy cool and fresh air even under the working conditions of sun-like fire and dust flying.
However, when the driver turns on the air conditioner in a cold or hot weather, the air supply device introduces low or high temperature air into the cabin, which seriously affects the cooling or heating effect of the air conditioner and causes energy waste.
Meanwhile, as for the air supply rate of the air supply device, the preference of each driver is different, and a part of drivers may feel uncomfortable due to continuous high air supply rate, or some drivers prefer more fresh air, so that the requirement of manually adjusting the air supply rate of the air supply device according to personal preference exists.
The present invention is directed to solving the above-mentioned problems and/or other problems in the prior art.
Disclosure of Invention
The invention provides a cockpit pressure regulating system, wherein an air conditioner is arranged in a cockpit, the pressure regulating system comprises an air supply device, a temperature sensor and a controller, the air supply device is used for sending air outside the cockpit into the cockpit to ensure positive pressure in the cockpit, and the air supply device is internally provided with a regulating valve used for regulating the air supply quantity of the air supply device; the temperature sensor is arranged in the cab to measure the temperature in the cab; a controller is connected with the regulating valve and the temperature sensor and is configured to control the regulation of the opening degree of the regulating valve, and the controller is configured to: and judging whether to automatically adjust the opening degree of the regulating valve according to the difference between the measured value of the temperature sensor and the preset comfortable temperature when the air conditioner is opened.
The present invention also provides a cockpit pressure adjusting method in which the cockpit is provided with an air conditioner and an air blowing means for blowing air outside the cockpit into the cockpit to secure a positive pressure in the cockpit and provided with an adjusting valve for adjusting an air blowing amount of the air blowing means, the method comprising:
a judging step of measuring the temperature in the cockpit under the condition that the air conditioner is opened, and judging whether to automatically adjust the opening degree of an adjusting valve of the air supply device according to the difference value between the measured value of the temperature and the preset comfortable temperature; and
and an adjusting step of adjusting the opening of the adjusting valve when the adjusting valve needs to be adjusted.
The invention also provides a cockpit comprising a cockpit pressure regulation system as described above.
The invention further provides a work machine comprising a cabin as described above.
The invention has the advantages that at least, the air supply device is provided with the regulating valve, the cockpit is provided with the temperature sensor, and the controller is configured to judge whether the opening of the regulating valve is automatically regulated or not according to the temperature difference when the air conditioner is opened, so that the air supply quantity of the air supply device can be regulated under the condition of needing rapid temperature rise/fall, the refrigeration/heating efficiency of the air conditioner is optimized on the premise of meeting the positive pressure requirement in the cockpit, and the energy loss is reduced. And the pressure sensor is arranged to ensure that the opening degree of the regulating valve is reduced on the premise of meeting the positive pressure requirement, so that the positive pressure in the cockpit is automatically ensured, the positive pressure in the cockpit can be monitored in real time, and the regulation of the positive pressure in the cockpit is more sensitively controlled. The display and adjustment device is convenient for drivers to know the positive pressure in the cabin and adjust the positive pressure according to personal preferences. Furthermore, the alarm device reminds a driver to check the sealing problem of the cockpit and the fault condition of the air supply device in time. The adjusting system of the invention does not need to change the air conditioning system of the cockpit, and only needs to input the opening/closing signal of the air conditioner to the controller. Thus, the air conditioning efficiency is improved with a simple structure.
Drawings
FIG. 1 illustrates a perspective view of a work machine to which a cabin pressure regulation system according to an exemplary embodiment of the present disclosure may be applied;
FIG. 2 shows a schematic diagram of a cockpit pressure regulation system according to an exemplary embodiment of the present invention; and
fig. 3 shows a flow chart of a cabin pressure regulating method according to an exemplary embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It may be evident, however, that one or more embodiments may be practiced without these specific details.
Fig. 1 illustrates an exemplary work machine 100. Work machine 100 may be any type of machine that performs operations associated with a particular industry (e.g., construction, mining, farming, transportation, etc.) and operates in a variety of work environments (e.g., construction site, mine site, farm, road, etc.), such as, for example, a motor grader, a wheel loader, a wheel dozer, a track-type excavator, etc.
The work machine 100 may include a main frame 30, a cab 35, and a work implement 36. In one embodiment, work implement 36 may be a bucket for a loader. A traveling device is disposed at a lower portion of the work machine 100 to support and move the work machine 100. As an example, the running gear is a wheel 41.
During operation of work machine 100 in a harsh work environment, a positive pressure needs to be maintained in the cabin of the work machine to avoid dust and the like from entering the cabin in order to ensure the quality of the air breathed by the operator in the cabin. According to the regulations of the relevant standards, such as ISO10263, the positive pressure inside the cabin (i.e. the difference between the cabin pressure and the outside atmospheric pressure) should be guaranteed, for example, to be 50Pa at a minimum. In the examples described below, the cabin is provided with air blowing means to ensure positive pressure in the cabin. At work machine start-up, the air supply device is activated by default to continue to deliver fresh air to the cabin, thereby ensuring that the relative air pressure inside the cabin with respect to the outside of the cabin is greater than the minimum positive pressure required inside the cabin (e.g., 50 Pa).
The present invention provides, as an exemplary embodiment, a pressure adjusting system for a cockpit, wherein the cockpit is provided with an air conditioner, the pressure adjusting system includes an air supply device, a temperature sensor, and a controller connected to a regulating valve and the temperature sensor, wherein the air supply device is configured to supply air outside the cockpit into the cockpit to secure a positive pressure in the cockpit, and the air supply device is provided therein with the regulating valve configured to adjust an air supply amount of the air supply device; the temperature sensor is arranged in the cab to measure the temperature in the cab; the controller is for controlling adjustment of the opening of the adjustment valve, and the controller is configured to: whether to automatically adjust the opening degree of the adjusting valve is judged according to a difference between a measured value of the temperature sensor and a predetermined comfort temperature in a case where the air conditioner is opened.
In the above example, the cabin is provided with an air supply device and an air conditioner. As one example, the air blowing device is turned on directly at the maximum opening degree by default when turned on to rapidly increase the pressure in the cabin. In this example, if the temperature in the cabin is very high or very low, for example, greatly different from a predetermined comfort temperature (a temperature comfortable for human body, for example, 20 ℃), for example, the difference exceeds 10 ℃ (i.e., the temperature in the cabin is higher than 30 ℃ or lower than 10 ℃), it indicates that the cabin needs to be rapidly cooled, and if the air supply device still continuously delivers a large amount of high-temperature or low-temperature gas outside the cabin into the cabin, the cooling or heating process of the air conditioner is greatly reduced, which affects the performance of the air conditioner. In this example, a temperature sensor is therefore also provided in the cabin to measure the temperature in the cabin. The controller is configured to determine to reduce the opening degree of the regulating valve and perform an operation of reducing the opening degree in a case where a difference between a measurement value of the temperature sensor and the predetermined comfort temperature is greater than 10 ℃. In this example, when the difference between the measured value of the temperature sensor and the predetermined comfort temperature exceeds 10 ℃, the opening degree of the regulating valve is automatically reduced, so that the flow rate of the air conveyed from the outside of the cockpit to the cockpit by the air supply device is reduced, the influence on the cooling/heating effect of the air conditioner is reduced, and the working efficiency of the air conditioner is improved. Also, in this example, no change is required to the air conditioning system of the cabin, and only the on/off signal of the air conditioner needs to be input to the controller. Thus, the improvement of the air conditioning efficiency is achieved with a simple structure. Preferably, the air supply device may be a pre-cleaner, which delivers filtered fresh air to the cabin by its air cleaning function.
Further, a pressure sensor may be provided, which is installed in the cockpit to measure a positive pressure in the cockpit; wherein the controller is configured to determine whether to automatically adjust the opening degree of the regulating valve according to a difference between a measurement value of the temperature sensor and a predetermined comfort temperature and a comparison result of a measurement value of the pressure sensor and a predetermined positive pressure value in a case where the air conditioner is opened.
As an example, the controller is configured to determine to decrease the opening degree of the regulator valve and perform an operation of decreasing the opening degree in a case where the temperature difference value is larger than a predetermined value (e.g., 10 ℃) and the measurement value of the pressure sensor is larger than a predetermined positive pressure value. By means of this example, it is achieved that the opening of the regulating valve is automatically adjusted in the event of a positive pressure in the cockpit being met. And when the difference value between the measured value of the temperature sensor and the preset comfortable temperature is smaller than a certain value, namely, the temperature does not need to be rapidly reduced, or the positive pressure in the cab is insufficient, the opening degree of the regulating valve is not reduced.
As mentioned above, the blower device is operated in such a way that a positive pressure in the cabin is firstly ensured. In this example using a pressure sensor, the pressure sensor is provided with one end communicating with the outside atmosphere and one end communicating with the cabin, and the measurement value output by the pressure sensor is a positive pressure difference, i.e., a positive pressure, of the cabin relative to the outside atmosphere. A predetermined positive pressure value may be set in the controller. It should be noted that the predetermined positive pressure value may be greater than the minimum positive pressure value required to satisfy the ISO standard, i.e., a positive pressure value that ensures a certain positive pressure margin. The predetermined positive pressure value is set to be greater than the minimum positive pressure value required for the cabin, for example, in consideration of unavoidable errors in the blower device, the pressure sensor, and the like, and unsatisfactory sealability of the cabin. For example, the predetermined positive pressure value may be 55Pa when the minimum positive pressure value is 50Pa. It will be appreciated by those skilled in the art that in the above example, the predetermined positive pressure value is set to be greater than the required minimum positive pressure value in order to ensure a better positive pressure effect, however, the predetermined positive pressure value may also be equal to the required minimum positive pressure value (i.e. the minimum positive pressure value required within the cockpit to meet the specifications of the standard).
In this example, the controller is configured to determine whether to automatically adjust the opening of the regulating valve based on two conditions. The first condition is the difference between the measurement of the temperature sensor and the predetermined comfort temperature and the second condition is the result of the comparison of the measurement of the pressure sensor with the predetermined positive pressure value. In this example, therefore, the positive pressure and the temperature in the cab are taken into consideration, and it is determined that the opening degree of the regulating valve of the air blowing device needs to be adjusted when both conditions are satisfied. Meanwhile, the pressure sensor is arranged, so that the positive pressure in the cockpit can be monitored in real time, and the adjustment of the positive pressure in the cockpit can be controlled more sensitively.
It should be noted that, although the pressure sensor is described in the foregoing example to adjust the opening degree of the adjusting valve of the air blowing device on the premise that the positive pressure in the cab is first ensured to improve the air conditioning efficiency, the pressure sensor is not necessarily required. For example, in one example described below (and further described below), the regulator valve is configured to have a minimum opening at which a minimum positive pressure value required within the cabin is met, thereby ensuring a minimum positive pressure without the use of a pressure sensor.
In order to ensure a minimum positive pressure, the controller is further configured to prohibit a reduction in the opening degree of the regulator valve in a case where the measurement value of the pressure sensor is less than or equal to a minimum positive pressure value required in the cabin. The minimum positive pressure value is set in the controller in advance. The minimum positive pressure can also be ensured in other ways, for example by configuring the regulating valve with a minimum opening which is the opening which provides the minimum positive pressure value required in the cabin, i.e. by the structure of the regulating valve. Through the two modes, the positive pressure in the cockpit can be ensured while the regulating valve of the air supply device is automatically regulated. However, both of these approaches can also be used simultaneously, equivalent to providing a double safeguard against a minimum positive pressure.
Illustratively, as shown in fig. 2, the cabin pressure regulating system may further include a display and manual adjustment device capable of displaying the measured value of the pressure sensor and provided with an adjustment key or knob connected with the controller to adjust the opening degree of the regulating valve. Through the display and manual adjustment device in the example, the driver can intuitively know the positive pressure value in the cockpit, and can conveniently and manually adjust the air supply quantity of the air supply device according to personal preference.
Therefore, the opening degree of the adjusting valve of the air supply device can be automatically adjusted or manually adjusted.
As shown in fig. 2, the cabin pressure regulating system may further comprise an alarm connected to the controller, wherein the controller controls the alarm to emit an alarm signal if the measured value of the pressure sensor is less than a minimum positive pressure value required in the cabin. In this example, the system has monitoring and warning functions for positive pressure in the cockpit. If the positive pressure in the cab is smaller than the minimum positive pressure value, for example, smaller than 50Pa, the display device is matched with the alarm to prompt the driver that the cab is in a low-pressure state which does not meet the minimum positive pressure, and the driver is advised to check the tightness in the cab or check whether the air supply device fails.
The present invention also provides a cabin pressure adjusting method in which a cabin is provided with an air conditioner and an air supply device for sending air outside the cabin into the cabin to secure a positive pressure in the cabin and provided with a regulating valve for regulating an air supply amount of the air supply device, the method comprising:
a judging step of measuring the temperature in the cockpit under the condition that the air conditioner is opened, and judging whether to automatically adjust the opening degree of an adjusting valve of the air supply device according to the difference value between the measured value of the temperature and the preset comfortable temperature; and
and an adjusting step of adjusting the opening of the adjusting valve when the adjusting valve needs to be adjusted.
It will be understood by those skilled in the art that the adjusting step includes not only adjusting the opening degree of the adjusting valve in the case where the air conditioner is turned on and the difference in temperature is excessive and rapid temperature rise/fall is required as described in this example, but also adjusting the opening degree of the adjusting valve, for example, according to a manual operation by a driver. For example, in this determination step, it is determined to decrease the opening degree of the regulating valve in the case where the difference in temperature is greater than a predetermined value (e.g., 10 ℃).
Accordingly, corresponding to an example in which a pressure sensor is provided in the cabin, the adjusting method further includes a step of measuring a positive pressure in the cabin, and the judging step is: in case that the air conditioner is turned on, it is judged whether to automatically adjust the opening degree of the regulating valve according to a difference between the measured value of the temperature and the predetermined comfort temperature and a result of comparing the measured value of the positive pressure with a predetermined positive pressure value. In this determination step, it is determined to decrease the opening degree of the regulating valve in a case where the difference value is larger than a predetermined value (for example, 10 ℃) and the measured value of the positive pressure is larger than a predetermined positive pressure value.
The method may further comprise inhibiting the opening of the regulating valve from being reduced in the event that a measured value of positive pressure within the cabin is less than a minimum positive pressure value required within the cabin.
Fig. 3 shows a flow chart of a method for cabin pressure regulation according to an exemplary embodiment of the present invention, which method will be better understood from the description. In the detailed example shown in the flow chart, the cabin pressure regulation system employs a temperature sensor, a pressure sensor, a display and regulation device, and an alarm to perform the detailed pressure regulation method. However, it will be understood by those skilled in the art that one or more embodiments may be practiced without these specific details.
First, the work machine is started by, for example, a key-turning operation. The blower is opened and its regulating valve defaults to the maximum opening in order to rapidly deliver air into the cabin. After a predetermined time, which is determined as a time during which the air blowing device is capable of delivering air to increase the positive pressure in the cabin to a predetermined value, for example, to a minimum positive pressure value required for the cabin, a positive pressure value P in the cabin is acquired by the pressure sensor, and it is determined whether the positive pressure value is greater than or equal to the minimum positive pressure value (for example, 50 Pa). If the positive pressure value is less than the minimum positive pressure value, an alarm is activated and a display such as "attention! Low pressure! "to prompt the operator to check the tightness of the cockpit, for example whether the door of the cockpit is completely closed, or whether the blower is malfunctioning. If the positive pressure value is larger than or equal to the minimum positive pressure value, whether an adjusting key on the display and manual adjusting device is operated or not is judged, and if so, the opening degree of an adjusting valve of the air supply device is controlled according to signals from the display and manual adjusting device.
Meanwhile, whether the air conditioner is turned on is detected, and if so, it is determined whether a difference between a measured value T from the temperature sensor and a predetermined comfort temperature (20 ℃) is greater than a predetermined value (e.g., 10 ℃, if so, indicating that rapid temperature rise or drop is required) and a measurement result from the pressure sensor is greater than a predetermined positive pressure value (e.g., 55 Pa), and if so, the opening degree of the regulating valve is automatically decreased to decrease the amount of air blown by the air blowing device. And if not, not adjusting the opening of the adjusting valve.
The invention also relates to a cockpit comprising a pressure regulation system as described above and an air conditioner. The pressure adjusting system can improve the cooling/heating effect of the air conditioner on the premise of ensuring the positive pressure in the cockpit, improve the efficiency of the air conditioner and reduce the waste of energy.
Further, the present invention relates to a work machine including a cabin as described above, whereby the work machine can ensure positive pressure in the cabin and air conditioning efficiency during operation, give a driver a more comfortable feeling, and facilitate the operation of the driver.
Industrial applicability
The pressure regulating system and the pressure regulating method for the cockpit can be applied to the cockpit of various working machines, and innovatively coordinate the air supply device and the air conditioner in the cockpit of the working machine, so that positive pressure in the cockpit can be ensured, and the efficiency of the air conditioner can be improved. The method of operation of the cabin pressure regulating system is described below as an example.
After a predetermined time of starting the work machine, for example one minute, without switching on the air conditioner, the pressure sensor measures a positive pressure in the cabin, and if the air pressure in the cabin relative to the environment is now less than the minimum positive pressure value required in the cabin, the display cooperates with an alarm to indicate to the driver that the cabin is currently in a low pressure state, advising the driver to check the tightness in the cabin or to check whether the air blowing device has failed. If the relative pressure is higher than the minimum positive pressure value required in the cockpit, a driver can control the opening of the regulating valve through a display and a key on a manual regulating device according to personal preference to regulate the air inflow, and when the positive pressure in the cockpit is reduced to a threshold value, namely the minimum positive pressure value, the controller can control the regulating valve not to reduce the opening any more or the structure of the regulating valve limits the regulating valve not to reduce the opening any more.
When the air conditioner is turned on, the controller first determines whether the cab needs to be rapidly cooled/heated according to the difference between the measured value obtained by the temperature sensor and a predetermined human body comfort temperature (for example, 20 ℃). If the absolute value of the difference is greater than a predetermined value, for example, 10 ℃, which means that the temperature outside the cab is greater than 30 ℃ or less than 10 ℃, then, if the relative pressure in the cab is greater than a predetermined positive pressure value, for example, 55Pa, the controller automatically drives the regulating valve, and reduces the opening degree under the condition that the relative pressure is greater than 50Pa, so as to reduce the air entering and enable the temperature in the cab to quickly reach the temperature set by the air conditioner. If the difference is less than 10 ℃ or the relative pressure in the cab is less than 55Pa, the controller cannot actively adjust the opening of the air valve. During the whole process, the driver can carry out manual adjustment through the display and the manual adjusting device according to personal preference.
It will be apparent to those skilled in the art that various modifications and variations can be made in the above disclosed embodiments without departing from the scope or spirit of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples disclosed herein be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims and their equivalents.
Claims (19)
1. A pressure regulation system for a cockpit, wherein the cockpit is provided with an air conditioner, the pressure regulation system comprising:
the air supply device is used for sending air outside the cockpit into the cockpit so as to ensure positive pressure in the cockpit; the air supply device is internally provided with a regulating valve for regulating the air supply quantity of the air supply device;
a temperature sensor disposed within the cabin to measure a temperature within the cabin; and
a controller connected with the regulating valve and the temperature sensor and configured to control adjustment of an opening degree of the regulating valve, and configured to: and judging whether to automatically adjust the opening degree of the adjusting valve according to the difference value between the measured value of the temperature sensor and the preset comfortable temperature when the air conditioner is opened.
2. The pressure regulation system for a cockpit of claim 1 further comprising:
a pressure sensor installed in the cabin to measure a positive pressure in the cabin;
wherein the controller is configured to determine whether to automatically adjust the opening degree of the regulating valve according to a difference between a measurement value of the temperature sensor and a predetermined comfort temperature and a comparison result of a measurement value of the pressure sensor and a predetermined positive pressure value when the air conditioner is opened.
3. The pressure regulating system for the cockpit according to claim 1, wherein the controller is configured to determine that the opening degree of the regulation valve needs to be decreased and perform an operation of decreasing the opening degree of the regulation valve in a case where the difference is greater than a predetermined value.
4. The pressure regulation system for a cockpit of claim 2 where,
the controller is configured to determine that it is necessary to reduce the opening degree of the regulator valve and perform an operation of reducing the opening degree of the regulator valve in a case where the difference value is larger than a predetermined value and a measured value of the pressure sensor is larger than a predetermined positive pressure value.
5. A pressure regulation system for a cockpit according to claim 3 or 4 where the predetermined value is 10 ℃.
6. The pressure regulation system for a cockpit of claim 2 further comprising:
and the display and manual adjusting device is configured to display the measured value of the pressure sensor, and is provided with an adjusting key which is connected with the controller to adjust the opening of the adjusting valve.
7. The pressure regulation system for a cabin according to any one of claims 2, 4 and 6, wherein the controller is further configured to prohibit a reduction in the opening degree of the regulation valve in a case where the measured value of the pressure sensor is less than or equal to a minimum positive pressure value required in the cabin.
8. The pressure regulating system for the cockpit according to any one of claims 1-6, wherein the regulating valve is configured to have a minimum opening degree that can provide a minimum positive pressure value required in the cockpit.
9. The pressure regulation system for a cockpit of any one of claims 1-8, further comprising:
and the alarm is connected to the controller, wherein the controller controls the alarm to send out an alarm signal when the measured value of the pressure sensor is smaller than the minimum positive pressure value required in the cockpit.
10. A cockpit comprising a pressure regulation system for a cockpit according to any one of claims 1-9 and an air conditioner.
11. A work machine comprising a cab according to claim 10.
12. A pressure adjusting method for a cockpit, wherein the cockpit is provided with an air conditioner and an air blowing device for blowing air outside the cockpit into the cockpit to secure a positive pressure in the cockpit, and the air blowing device is provided with a regulating valve for regulating an air blowing amount of the air blowing device, the method comprising:
a judging step of measuring a temperature in the cockpit under a condition that the air conditioner is opened, and judging whether to automatically adjust the opening degree of an adjusting valve of the air supply device according to a difference value between a measured value of the temperature and a preset comfortable temperature; and
and an adjusting step of adjusting the opening of the adjusting valve when the adjusting valve needs to be adjusted.
13. The pressure adjustment method for the cockpit according to claim 12, further comprising a step of measuring a positive pressure in the cockpit, and the judging step is: and judging whether to automatically adjust the opening degree of the regulating valve according to the difference value between the measured value of the temperature and the preset comfortable temperature and the comparison result between the measured value of the positive pressure and the preset positive pressure value when the air conditioner is opened.
14. The pressure regulating method for a cockpit according to claim 12,
in the determining step, it is determined that the opening degree of the regulating valve needs to be decreased in a case where the difference is larger than a predetermined value.
15. The pressure regulation method for a cabin according to claim 13,
in the determining step, it is determined that the opening degree of the regulating valve needs to be decreased in a case where the difference value is larger than a predetermined value and a measured value of the positive pressure is larger than a predetermined positive pressure value.
16. The pressure adjustment method for the cockpit according to claim 14 or 15, wherein the predetermined value is 10 ℃.
17. The pressure regulation method for a cabin according to claim 12,
the method further comprises issuing a warning signal in case the measured value of positive pressure is less than a minimum positive pressure value required within the cockpit.
18. A pressure regulating method for a cockpit according to any of claims 12-17 where said cockpit is further provided with a display and manual adjustment device on which adjustment keys are provided,
the method further includes the step of adjusting the opening degree of the regulator valve with the regulator key operated.
19. The pressure regulating method for a cabin according to any one of claims 12-17,
the method further comprises inhibiting the opening of the regulating valve from being reduced in the event that the measured value of the positive pressure is less than or equal to a minimum positive pressure value required in the cockpit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473699.3A CN115262685A (en) | 2021-04-29 | 2021-04-29 | Cockpit pressure adjusting system and method, cockpit and working machine |
| AU2022202621A AU2022202621A1 (en) | 2021-04-29 | 2022-04-20 | Cab pressure regulating system, cab and work machine including the same, and cab pressure regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110473699.3A CN115262685A (en) | 2021-04-29 | 2021-04-29 | Cockpit pressure adjusting system and method, cockpit and working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115262685A true CN115262685A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110473699.3A Pending CN115262685A (en) | 2021-04-29 | 2021-04-29 | Cockpit pressure adjusting system and method, cockpit and working machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115262685A (en) |
| AU (1) | AU2022202621A1 (en) |
-
2021
- 2021-04-29 CN CN202110473699.3A patent/CN115262685A/en active Pending
-
2022
- 2022-04-20 AU AU2022202621A patent/AU2022202621A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022202621A1 (en) | 2022-11-17 |
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