Construction machine

Abstract

The present invention provides a construction machine provided with a cab in which a driver can ride, the construction machine comprising: a ventilation seat provided with a fan; an air conditioning device for adjusting the internal temperature of the cab; and a duct extending from the air conditioning device to guide air flow, the duct branching into a first duct extending to the upper side of the cab and a second duct extending to the rear of the ventilation seat. Therefore, the cooling effect of the driving somatosensory can be improved.

Description

[0001] This application is a divisional application of the Chinese invention patent application with application number 202210200048.1 and invention name “Engineering Machinery”. Technical Field

[0002] The present invention relates to an engineering machine, and more particularly, to an engineering machine with a ventilated seat. Background Art

[0003] Generally, construction machines such as excavators and wheel loaders include a cab in which a driver can sit. Figure 1 2 shows a construction machine including a cab 20. An air conditioner is provided in the cab 20. The air conditioner creates a comfortable working environment by adjusting the indoor temperature of the cab 20 and also prevents frost from forming on the windows.

[0004] However, when the outside temperature is quite high, such as in summer, the driver's body temperature will not drop significantly only by the cooling operation of the air conditioner. To solve this problem, ventilated seats have been installed in construction machinery in the past to provide a more comfortable working environment.

[0005] However, if Figure 2 and Figure 3 As shown, the air conditioning device 24 and the nozzle 26 of the conventional engineering machinery are located behind the seat 22, and the air is sprayed toward the top of the driver's head. Therefore, even if the seat 22 is set as a ventilated seat, the air will reach the driver after having circulated inside the cab 20 and the temperature has risen significantly, so the somatosensory effect of the ventilated seat is not so obvious. In addition, since the lower end of the seat 22 of the engineering machinery is combined with the suspension 23, the flow of air is partially blocked, which inevitably results in a further reduction in the somatosensory effect.

[0006] Since the cooling effect is also an issue related to work efficiency, there is a need for a technology that can improve the perceived cooling effect of a construction machine equipped with a ventilated seat. Summary of the invention

[0007] Technical issues

[0008] An object of the present invention is to provide a construction machine capable of improving the body-felt cooling effect of the construction machine having a ventilated seat.

[0009] Technical Solution

[0010] The present invention provides an engineering machine, which includes a cab in which a driver can sit, and the engineering machine includes: a ventilated seat, which is equipped with a fan; an air-conditioning device, which adjusts the internal temperature of the cab; and a duct, which extends from the air-conditioning device to guide air flow, and the duct branches into a first duct extending to the upper side of the cab and a second duct extending to the rear of the ventilated seat.

[0011] In addition, the construction machine may further include a first nozzle provided at an end of the first duct and a second nozzle provided at an end of the second duct, the second nozzle being open in a direction of exhausting air toward the ventilated seat.

[0012] Furthermore, the second nozzle may be provided as a variable nozzle capable of adjusting the discharge direction of air.

[0013] In addition, the ventilated seat may include a backrest supporting an upper body of a driver, and a first fan is provided on the backrest.

[0014] In addition, the ventilated seat may include a cushion supporting a lower body of the driver, and a second fan is provided on the cushion.

[0015] In addition, the second fan may be protrudingly disposed at the lowermost end of the ventilated seat.

[0016] In addition, the engineering machine may further include a second nozzle disposed at an end of the second duct, and the second nozzle is arranged at the same height as the second fan.

[0017] Furthermore, the second conduit may branch off from the most upstream portion of the first conduit.

[0018] Furthermore, the first pipe may include a first portion extending toward an upper end and a second portion branching laterally from an upstream side of the first portion.

[0019] In addition, according to an embodiment of the present invention, there is provided a construction machinery, which includes a cab in which a driver can sit, the construction machinery including: a ventilated seat provided with a fan; an air conditioning device which adjusts the internal temperature of the cab; and a duct which extends from the air conditioning device to guide the flow of air, the duct branching into a first duct extending toward the upper side of the cab and a second duct extending toward the rear of the ventilated seat, the construction machinery also including a first nozzle provided at an end of the first duct and a second nozzle provided at an end of the second duct, the second nozzle being open in a direction of exhausting air toward the ventilated seat, the ventilated seat including a cushion for supporting the lower body of the driver, and a second fan being provided on the cushion.

[0020] At this time, the second nozzle may be disposed at a height lower than that of the second fan.

[0021] Furthermore, according to an embodiment of the present invention, the air conditioning device may be disposed behind the ventilated seat.

[0022] Furthermore, according to an embodiment of the present invention, the air conditioning device may be disposed on a side of the ventilated seat.

[0023] Furthermore, according to an embodiment of the present invention, the air conditioning device may be disposed below the ventilated seat.

[0024] Effects of the Invention

[0025] The engineering machinery of the embodiment of the present invention can improve the cooling effect felt by the driver, and accordingly, can create a more comfortable working environment, thereby improving working convenience and working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view schematically showing the construction machine.

[0027] Figure 2 It is a perspective view showing a cab of a conventional construction machine.

[0028] Figure 3 This is a perspective view showing an air conditioning device installed in a conventional construction machine.

[0029] Figure 4 This is a perspective view showing a cab of a construction machine according to an embodiment of the present invention.

[0030] Figure 5 It is a cutaway perspective view showing a second duct of a construction machine according to an embodiment of the present invention.

[0031] Figure 6 It is a perspective view showing a first duct and a second duct of a construction machine according to an embodiment of the present invention.

[0032] Figure 7 It is a cross-sectional view showing the air flow in the first duct and the second duct of the construction machine according to one embodiment of the present invention.

[0033] Figure 8 This is a perspective view showing the air flow in the first duct and the second duct of the construction machine according to one embodiment of the present invention.

[0034] Fig. 9 This is a perspective view showing a second nozzle of a construction machine according to an embodiment of the present invention.

[0035] Fig.10 This is a perspective view showing a ventilated seat for a construction machine according to an embodiment of the present invention.

[0036] Fig.11 This is a front view showing the air flow of a ventilated seat of a construction machine according to an embodiment of the present invention.

[0037] Fig.12 A perspective view showing the air flow toward a cab and a ventilated seat of a construction machine according to another embodiment of the present invention.

[0038] Fig.13 It is a perspective view showing the air flow toward the cab and the ventilated seat of a construction machine according to still another embodiment of the present invention.

[0039] Fig.14 This is a graph comparing temperature changes at the lower end of the ventilated seat of the construction machine according to the embodiment of the present invention and that of the conventional construction machine.

[0040] Fig.15 This is a graph comparing temperature changes inside the seat backs of ventilated seats of a construction machine according to an embodiment of the present invention and a conventional construction machine.

[0041] Reference numerals

[0042] 20: cab, 21: cab frame, 22: seat, 23: suspension, 24: air conditioning unit, 25: duct, 26: nozzle, 110: ventilated seat, 112: backrest, 113: first fan, 114: cushion, 115: second fan, 120: suspension, 210: air conditioning unit, 220: first duct, 220a: first part, 220b: second part, 222: first nozzle, 230: second duct, 232: second nozzle, 240: plate, 110': ventilated seat, 310: air conditioning unit, 330: second duct, 332: second nozzle, 340: plate, 110": ventilated seat, 410: air conditioning unit, 420: first duct, 430: second duct, 432: second nozzle. DETAILED DESCRIPTION

[0043] The engineering machinery according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Figure 4 is a perspective view showing a cab of a construction machine according to an embodiment of the present invention. Figure 5 is a cutaway perspective view showing a second duct of a construction machine according to an embodiment of the present invention, Figure 6 is a perspective view showing a first duct and a second duct of a construction machine according to an embodiment of the present invention, Figure 7 is a cross-sectional view showing the air flow in the first duct and the second duct of the construction machinery according to one embodiment of the present invention, Figure 8 is a perspective view showing the air flow in the first duct and the second duct of the construction machinery according to one embodiment of the present invention. Fig. 9 is a perspective view showing a second nozzle of a construction machine according to an embodiment of the present invention, Fig.10 is a perspective view showing a ventilated seat for an engineering machine according to an embodiment of the present invention, Fig.11 is a front view showing the air flow of a ventilated seat of an engineering machine according to an embodiment of the present invention, Fig.12 is a perspective view showing the air flow toward the cab and the ventilated seat of the construction machinery according to another embodiment of the present invention, Fig.13 is a perspective view showing the air flow toward the cab and the ventilated seat of the construction machinery according to another embodiment of the present invention, Fig.14 This is a graph comparing the temperature changes at the lower end of the ventilated seat of the construction machine according to one embodiment of the present invention and the conventional construction machine. Fig.15 This is a graph comparing temperature changes inside the seat backs of ventilated seats of a construction machine according to an embodiment of the present invention and a conventional construction machine.

[0045] like Figures 4 to 8 As shown, a cab of an engineering machinery according to an embodiment of the present invention includes: a cab frame 21 forming an exterior; a ventilated seat 110 on which a driver sits; a suspension 120 coupled to a lower portion of the ventilated seat 110 to cushion vibrations and impacts; an air-conditioning device 210 provided to achieve air harmony in the cab; a first duct 220 and a second duct 230 for guiding air supplied from the air-conditioning device 210; and a first nozzle 222 and a second nozzle 232 provided at the ends of the first duct 220 and the second duct 230 to discharge air into the cab.

[0046] The cab frame 21 corresponds to the frame of the cab, and doors and windows are attached to the cab frame 21, so that the cab interior becomes a closed space. Since construction machinery usually operates in an environment with a lot of noise or dust, it is preferred to isolate the interior of the cab where the driver sits from the outside.

[0047] The ventilated seat 110 on which the driver sits is formed with a plurality of fine holes on the surface to allow air to pass through. The ventilated seat 110 includes a backrest 112 for supporting the upper body of the driver and a cushion 114 for supporting the lower body of the driver. The inner side surfaces of the backrest 112 and the cushion 114 are the parts that the driver directly contacts when sitting.

[0048] The backrest 112 and the cushion 114 are provided with a first fan 113 and a second fan 115, respectively, to achieve more effective ventilation. The first fan 113 and the second fan 115 suck air from the outside of the ventilated seat 110 and force it to circulate to the inside. In this way, the driver can feel cool due to the cool air sprayed from the holes formed in the backrest 112 and the cushion 114.

[0049] At this time, the second fan 115 is protrudingly arranged at the lowermost end of the ventilated seat 110. That is, the second fan 115 is more protruding than the lower end of the cushion 114. In addition, the second nozzle 232 is arranged at the same height as the second fan 115. According to such a configuration, the air discharged from the second nozzle 232 can be effectively transferred without an obstacle that reduces the air volume when reaching the second fan 115.

[0050] The suspension 120 is provided at the lower end of the ventilated seat 110 to mitigate impact. Unlike passenger cars, construction machinery travels or operates on a road with severe twists and turns and many obstacles, which transmits large and frequent vibrations to the cab. Therefore, in order to reduce driver fatigue caused by vibration, the suspension 120 is provided. However, the suspension 120 is combined with the lower end of the cushion 114, thereby hindering the air flow under the ventilated seat 110. That is, generally speaking, construction machinery is an unfavorable structure in terms of ventilation effect.

[0051] The air conditioning device 210 is a device for air conditioning in the cab, which inhales external air and supplies air whose temperature and humidity are appropriately adjusted through filtering, heating, cooling, etc. The air conditioning device 210 is also called HVAC (Heating, Ventilation, Air Conditioning), and can operate as all of heating, ventilation, and cooling as needed. Here, in view of the purpose and effect of the present invention, the description is based on the premise that the air conditioning device 210 operates as cooling, but the air conditioning device 210 is not limited to a refrigerator.

[0052] The position where the air conditioner 210 is installed can be configured differently according to the size of the construction machine or the layout of the cab. Specific examples of installing the air conditioner at other positions will be described later in other embodiments.

[0053] The air whose temperature and humidity are adjusted by the air conditioner 210 flows to the first duct 220. The first duct 220 extends from the air conditioner 210 to the upper side of the cab. A first nozzle 222 is provided at the end of the first duct 220 to discharge the air flowing to the first duct 220 into the interior of the cab.

[0054] At this time, the second duct 230 is branched from the first duct 220. That is, the flow of air supplied from the air conditioning device 210 is divided into the first duct 220 and the second duct 230. The first duct 220 and the second duct 230 may extend in different directions from each other, and may be formed in different sizes from each other so that the flow rates of the air flowing therein are different. In this embodiment, the first duct 220 corresponds to the main duct, and the second duct 230 corresponds to the secondary duct, so that the flow rate of the air passing through the first duct 220 is greater than that of the second duct 230. That is, the second duct 230 is formed so as not to significantly reduce the flow rate of the first duct 220.

[0055] The first pipe 220 includes a first portion 220a extending upward and a second portion 220b branching from the upstream of the first portion 220a to the side. The second portion 220b is configured to supplement the flow toward the first pipe 220 that becomes insufficient due to the second pipe 230.

[0056] The second pipe 230 is formed to branch from the most upstream of the first pipe 220 so that the flow discharged from the air conditioner 210 is directed directly toward the second pipe 230 , thereby enabling effective flow distribution.

[0057] The second duct 230 extends toward the ventilated seat 110. Since the air conditioning device 210 and the first duct 220 are located behind the ventilated seat 110, in other words, the second duct 230 is in a state of extending toward the front of the cab.

[0058] A second nozzle 232 is provided at the end of the second duct 230. The second nozzle 232 guides the air in a manner of discharging air in the direction where the ventilated seat 110 is located.

[0059] A plate 240 is provided between the air conditioning device 210 and the ventilated seat 110. The plate 240 spatially separates the air conditioning device 210, the first duct 220, and the second duct 230 from the interior of the cab. The second duct 230 extends to the rear of the plate 240, and an opening is formed in the plate 240, in a form in which the second nozzle 232 is located in the opening.

[0060] The second nozzle 232 is opened toward the rear of the ventilated seat 110 . Therefore, the air flowing along the second duct 230 is discharged from the second nozzle 232 toward the rear of the ventilated seat 110 .

[0061] like Fig. 9As shown, the second nozzle 232 can adjust its opening direction upward, downward, leftward, and rightward. Therefore, the driver can adjust the angle of the second nozzle 232 to discharge air in an appropriate direction according to the height or position of the ventilated seat 110. In addition, the second nozzle 232 can also be opened and closed, and, depending on the situation, the second nozzle 232 can also be closed to prevent air from being discharged.

[0062] like Fig.10 and Fig.11 As shown, the air discharged from the second nozzle 232 toward the rear of the ventilated seat 110 flows toward the first fan 113 and the second fan 115. Then, when the first fan 113 and the second fan 115 rotate, the cold air discharged from the second nozzle 232 is transferred to the inner side of the ventilated seat 110, so that the driver can feel cool. At this time, if the second nozzle 232 is opened to the upper side, a larger flow of air will flow to the first fan 113, so that the temperature of the inner side of the backrest 112 decreases. On the contrary, if the second nozzle 232 is opened to the lower side, a larger flow of air will flow to the second fan 115, so that the temperature of the upper side of the cushion 114 decreases.

[0063] like Fig.14 and Fig.15 As shown, the difference in the perceived cooling effect produced by the presence or absence of the second nozzle 232 of this embodiment is relatively large. Roughly speaking, in the case of the construction machinery of this embodiment, a temperature drop of 5 to 8 degrees is produced, which is a value that can provide considerable comfort for the driver.

[0064] In addition, the present embodiment can maximize the sensible cooling effect by only adding the second duct 230 and the second nozzle 232, thereby achieving a greater effect at a lower cost. That is, it can be achieved by only minimal changes in the duct structure design without adding an air conditioning device or changing the structure of the ventilated seat.

[0065] Therefore, the present invention can be applied to various construction machines having layouts different from each other. Fig.12 The air conditioning device is installed on the side of the ventilation seat of the engineering machinery, showing another embodiment of the present invention Fig.13 This is a construction machine in which the air conditioning device is installed under the ventilated seat.

[0066] Specifically, if Fig.12As shown, in an engineering machine of another embodiment of the present invention, a second duct 330 extends from an air conditioning device 310 located on the side of the ventilated seat 110' to the rear of a plate 340, and a second nozzle 332 is provided at the end of the second duct 330 to discharge air toward the rear of the ventilated seat 110'.

[0067] In addition, if Fig.13 As shown, in an engineering machinery of another embodiment of the present invention, a second pipe 430 branching from the first pipe 420 extends from an air-conditioning device 410 located below the ventilated seat 110", and a second nozzle 432 is provided at the end of the second pipe 430 to discharge air toward the rear of the ventilated seat 110".

[0068] As described above, the present invention can be implemented by being modified appropriately in accordance with air-conditioning apparatuses installed at various positions depending on the type and size of construction machinery.

[0069] The effects of the embodiments of the present invention are described below.

[0070] As mentioned above, unlike vehicles, construction machinery has a feature in which the suspension is coupled to the lower portion of the seat, and the air supplied from the air conditioning device is exhausted from behind the driver. Therefore, in the past, even if a ventilated seat was used, the cooling effect felt by the driver was not obvious.

[0071] However, the embodiments of the present invention include a separate second duct 230, 330, 430 branching in the direction of the ventilated seats 110, 110', 110", and form a second nozzle 232, 332, 432 at the end of the second duct 230, 330, 430, so that air can be discharged toward the ventilated seats 110, 110', 110". Therefore, the cold air discharged from the second nozzles 232, 332, 432 directly reaches the ventilated seats 110, 110', 110", which can greatly improve the body-sensed cooling effect.

Claims

1. An engineering machine, comprising a cab in which a driver can sit, wherein the engineering machine is characterized in that it comprises: ventilated seats, which have fans; an air conditioning unit, which regulates the interior temperature of the cab; as well as a duct extending from the air conditioning device to guide air flow, and the duct is branched into a first duct extending toward an upper side of the cab and a second duct extending toward the rear of the ventilated seat, The ventilated seat includes a cushion for supporting the lower body of the driver, and a second fan is provided on the cushion, and the second fan is protrudingly arranged at the lowermost end of the ventilated seat. The engineering machine further includes a second nozzle disposed at an end of the second duct, the second nozzle being open in a direction of exhausting air toward the ventilated seat, and the second nozzle being arranged at the same height as the second fan. The engineering machinery also includes a plate arranged between the air-conditioning device and the ventilated seat, wherein the plate spatially separates the air-conditioning device, the first pipe and the second pipe from the interior of the cab, the second pipe extends to the back of the plate, an opening is formed on the plate, and the second nozzle is located in the opening.

2. The construction machinery according to claim 1, characterized in that: Also included is a first nozzle disposed at the end of the first pipe.

3. The construction machine according to claim 1, characterized in that: The second nozzle is provided as a variable nozzle capable of adjusting the discharge direction of air.

4. The construction machinery according to claim 1, characterized in that: The ventilated seat includes a backrest supporting the upper body of the driver, A first fan is arranged on the backrest.

5. The construction machine according to claim 1, characterized in that: The second pipeline branches off from the most upstream portion of the first pipeline.

6. The construction machine according to claim 1, characterized in that: The first pipe includes a first portion extending toward an upper end and a second portion branching laterally from an upstream side of the first portion.

7. The construction machine according to claim 1, characterized in that: The air conditioning device is arranged behind the ventilated seat.

8. The construction machine according to claim 1, characterized in that: The air conditioning device is arranged on the side of the ventilated seat.

9. The construction machine according to claim 1, characterized in that: The air conditioning device is arranged below the ventilated seat.

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