JP2004338457A - Air conditioner of construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent generation of a temperature difference on right and left sides of the body of an operator by substantially uniformly exposing the right and left sides of the operator to cold air and hot air. <P>SOLUTION: A duct 14a is disposed on an inner wall surface 13 on an opposite side of a door from an air conditioning unit 12. A duct 14b is extended between a traveling pedal 19 in front of a driver's seat 11 and front glass 17a and 17b. Blowoff ports 16a and 26a are provided on both of left and right front pillars 15 and 25. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air conditioner for a construction machine, and more particularly to an air conditioner provided in a cabin of a hydraulic shovel.
[0002]
[Prior art]
An air conditioner of this type of construction machine includes an air conditioning unit provided in a rear portion of a driver's seat in a cabin, a duct for guiding cool air and hot air from the air conditioning unit, and an outlet for blowing cold air and hot air sent through the duct. With mouth. For example, one cool air outlet is provided at the rear of the driver's seat and blows cold air toward the ceiling, and a duct is provided on the inner wall surface opposite to the door from the air conditioning unit, and another outlet is provided at the side of the driver's seat. Is provided so as to blow cool air from the outlet toward the upper body of the operator, and an outlet is provided below the driver's seat so as to blow warm air toward the feet of the operator ( For example, see Patent Document 1).
[0003]
As shown in FIGS. 6 and 7, the air conditioning unit 2 is installed at the rear of the driver's seat 1, and an outlet 4 a is provided at a position in front of the inner side surface 3 on the opposite side of the door. Is formed so as to blow cold air / hot air toward the upper body of the operator, and an air outlet 4b is provided near the air outlet 4a. The cold air / hot air is blown from the air outlet 4b toward the windshields 5a, 5b. Some are formed so as to blow out the wind and cause demisting or defrosting.
[0004]
[Patent Document 1]
Japanese Utility Model Registration No. 2530809 (pages 1 to 3, FIG. 1).
[0005]
[Problems to be solved by the invention]
In the air conditioner disclosed in Patent Document 1, when the cabin door is opened and locked to perform work, the operator's right hand and right body can adjust body temperature with cold air and hot air, but the left hand and left body can be exposed to outside air. , The air conditioning effect cannot be obtained sufficiently, and there is a problem that a difference in temperature occurs between the left and right sides of the operator's body and the physical condition is lost.
[0006]
On the other hand, the air conditioner shown in FIGS. 6 and 7 also blows cold and hot air from the right front of the operator in a spot manner. However, there is a problem that a difference in temperature occurs between the left and right sides of the operator's body, and the effect of demisting or defrosting on the door side of the windshield is extremely small.
[0007]
Therefore, there is a technical problem to be solved in order to make the cool air and warm air blow to the operator almost equally to the left and right so that the left and right temperature difference does not occur to the operator's body. The invention aims to solve this problem.
[0008]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object, and has an air conditioning unit provided in a cabin, a duct for guiding cool air / hot air from the air conditioning unit, and a cold air / hot air sent through the duct. In the air conditioner of a construction machine having an outlet for blowing air, a duct is provided on the inner wall surface opposite to the door from the air conditioning unit, and a duct is provided between a traveling pedal in front of a driver's seat and a windshield. An air conditioner for construction machinery that is extended and has outlets at the front pillars on both the left and right sides.
And an air conditioner provided in the cabin, a duct for guiding cool air / hot air from the air conditioner unit, and an outlet for blowing out cool air / hot air sent through the duct. An air conditioner for a construction machine, wherein a duct is provided under the floor of the cabin from the air conditioning unit, and air outlets are provided in both left and right front pillars,
And the air outlet of the construction machine, wherein the outlet is provided such that cool air / hot air is blown toward the upper body of the operator in the driver's seat.
And the air outlet of the construction machine provided so that the outlet is blown toward the feet of the operator in the driver's seat cold and hot air,
And the air outlet of the construction machine, wherein the outlet is provided such that cool air / hot air is blown toward the windshield,
Further, the present invention provides an air conditioner for a construction machine in which the outlet is provided such that cool air / hot air is blown toward a door glass or a side glass.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In the figure, reference numeral 10 denotes a cabin of a hydraulic shovel as an example of a construction machine, and an air conditioning unit 12 is provided at a rear portion of a driver's seat 11 in the cabin 10, and from the air conditioning unit 12 to a front side inside an opposite side of a door. A duct 14a is provided in the wall surface 13, and the duct 14b branches off from the front end of the duct 14a along the right front pillar 15 and rises. An outlet 16a is provided at a middle right front position. The outlet 16a is provided so that cool air and warm air are blown toward the upper body of the operator sitting in the driver's seat 11.
[0010]
Further, the duct 14b is provided with an outlet 16b at a position near the outlet 16a so as to blow cold air / warm air toward the feet of the operator in the driver's seat, and further provided on the upper and lower windshields 17a, 17b. An outlet 16c is provided so as to blow out cold and warm air, and an outlet 16d is provided so as to blow out cool and warm air toward the side glass 18 mounted on the inner wall 13 on the opposite side of the door. Therefore, the right front pillar 15 is provided with four outlets 16a to 16d, and cool air and warm air are respectively blown toward the upper body of the operator, the feet of the operator, the upper and lower windshields 17a, 17b, the side glass 18, and the like. Is done.
[0011]
Here, a duct 14c branches and extends from a front end of a duct 14a disposed in the inner wall surface 13 on the opposite side of the door, between a traveling pedal 19 in front of a driver's seat 11 and a windshield 17b, The duct 14d branches off from the other end of the duct 14c along the left front pillar 25 and rises, and an outlet 26a is provided at a middle left front position. The outlet 26a is provided so that cool air and warm air are blown toward the upper body of the operator sitting in the driver's seat 11.
[0012]
Further, the duct 14b is provided with an outlet 26b at a position near the outlet 26a so as to blow cold air / warm air toward a foot of an operator in a driver's seat, and further provided on upper and lower windshields 17a, 17b. An outlet 26c is provided so as to blow cool air and warm air toward the door, and an outlet 26d is provided so as to blow cool air and warm air toward the door glass 28 attached to the door 27. Accordingly, the left front pillar 25 is provided with four outlets 26a to 26d, and cool air and warm air are respectively directed toward the upper body of the operator, the feet of the operator, the upper and lower windshields 17a and 17b, the door glass 28, and the like. It is blown out.
[0013]
Although not shown, the duct 14a connected to the air conditioning unit 12 is not necessarily provided in the inner wall surface 13 on the opposite side of the door, but is also provided, for example, from below the floor of the cabin 10 to the front. Is also good. Also in this case, the duct 14b is diverged from the front end of the duct 14a disposed under the floor along the right front pillar 15 and rises, and the outlets 16a to 16d are provided at the right front middle position, and the duct 14a of the duct 14a under the floor is provided. From the front end, a duct 14c branches and extends between the traveling pedal 19 in front of the driver's seat 11 and the windshield 17b, and the duct 14d branches from the other end of the duct 14c along the left front pillar 25. The air outlets 26a to 26d are provided at the left front center position. Alternatively, a duct 14b along the right front pillar 15 and a duct 14d along the left front pillar 25 under the floor of the cabin 10 may be branched and provided.
[0014]
In this way, by applying the cool air / warm air from the front middle sections on the left and right sides, the entire body of the operator can be cooled and heated evenly. In particular, by gripping the operating lever from the outlets 16a and 26a in the summer, the sweaty operator's hand is cooled with cold air, and in the winter, the frozen operator's hand is warmed with warm air, regardless of the season. The workability can be improved by setting the temperature to an optimum temperature. Also, in cold weather, the operator's toes tend to freeze and the sense tends to be dull, but by blowing out warm air from the outlets 16b and 26b, the operator's feet can be quickly warmed to create a comfortable working environment. it can.
[0015]
Furthermore, by blowing cool air / hot air from the outlets 16c, 26c and 16d, 26d on the left and right sides, the mist for the windshields 17a, 17b, the side glass 18, and the door glass 28 is reduced as compared with the conventional case of only one side. Alternatively, the effect of defrost becomes extremely high. Further, when the work is performed in a state where the door 27 is opened and locked, an air curtain is formed at a door opening portion by cold air / hot air blown from the air outlets 26a to 26d provided on the door side, The cool air / warm air in the cabin 10 is cut off from the outside air, so that highly efficient air conditioning can be performed.
[0016]
The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.
[0017]
【The invention's effect】
As described in detail in the above embodiment, the invention according to claim 1 includes a duct disposed on the inner wall surface opposite to the door from the air conditioning unit, and the duct is disposed between the traveling pedal and the windshield. And the outlets are provided in both the left and right front pillars, so that the cool air and the hot air can be blown to the operator substantially equally in the left and right directions. Therefore, there is no left-right temperature difference in the operator's body, and problems such as the operator becoming ill can be solved.
[0018]
According to the second aspect of the present invention, a duct is provided below the floor of the cabin from the air conditioning unit, and the outlets are provided at both the left and right front pillars. Cold and warm air will be evenly applied. Therefore, there is no left-right temperature difference in the operator's body, and problems such as the operator becoming ill can be solved.
[0019]
According to the third aspect of the present invention, the outlet is configured to blow cold air / hot air toward the upper body of the operator in the driver's seat. The hand of the operator holding the operation lever can be maintained at the optimum temperature.
[0020]
According to a fourth aspect of the present invention, the outlet is configured such that cool air or hot air is blown toward the feet of an operator in a driver's seat. The operator's feet can be quickly warmed in cold weather to create a comfortable working environment.
[0021]
According to the fifth aspect of the present invention, the outlet is configured to blow cold air or hot air toward the windshield of the driver's seat. The effect of demist or defrost becomes extremely high.
[0022]
According to a sixth aspect of the present invention, the outlet is configured such that the cool air or the hot air is blown toward the door glass or the side glass. The effect of demisting or defrosting is extremely high.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention, and is a side view of the inside of a cabin of a hydraulic shovel.
FIG. 2 is a plan view showing the inside of the cabin of the hydraulic shovel according to the embodiment of the present invention.
FIG. 3 shows an embodiment of the present invention, and is a view taken along line AA of FIG. 2;
FIG. 4 is a perspective view of a door-side outlet according to the embodiment of the present invention.
FIG. 5 is an explanatory view showing an embodiment of the present invention and showing the direction of wind blown from left and right outlets and the effect of demisting or defrosting on a windshield, a side glass, and a door glass.
FIG. 6 is a side view showing the inside of a cabin of a hydraulic shovel according to the related art.
FIG. 7 is an explanatory view showing a conventional technique and showing the direction of wind blown from a right outlet and the effect of demisting or defrosting on a windshield.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Cabin 11 Driver's seat 12 Air conditioning unit 13 Inner wall surface 14a-14d opposite a door Duct 15 Front pillars 16a-16d Outlets 17a, 17b Front glass 18 Side glass 19 Running pedal 25 Front pillars 26a-26d Outlets 27 Door 28 Door glass

Claims (6)

In an air conditioner provided in a cabin, a duct for guiding cool air / hot air from the air conditioner unit, and an air conditioner for a construction machine including an outlet for blowing out cool air / hot air sent through the duct,
A duct is arranged on the inner wall surface opposite to the door from the air conditioning unit, a duct is extended between a traveling pedal in front of a driver's seat and a windshield, and outlets are provided on both left and right front pillars. Characteristic air conditioner for construction machinery. In an air conditioner provided in a cabin, a duct for guiding cool air / hot air from the air conditioner unit, and an air conditioner for a construction machine including an outlet for blowing out cool air / hot air sent through the duct,
An air conditioner for a construction machine, wherein a duct is provided below the floor of the cabin from the air conditioning unit, and outlets are provided in both left and right front pillars. The air conditioner for a construction machine according to claim 1 or 2, wherein the outlet is provided so as to blow cool air / warm air toward an upper body of an operator in a driver's seat. The air conditioner for a construction machine according to claim 1, wherein the outlet is provided so as to blow cool air and warm air toward a foot of an operator in a driver's seat. The air conditioner for a construction machine according to claim 1 or 2, wherein the outlet is provided so as to blow cool air / warm air toward the windshield. The air conditioner for a construction machine according to claim 1 or 2, wherein the outlet is provided so as to blow cool air or warm air toward a door glass or a side glass.

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