JP2006218902A - Air conditioner for working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for a working machine with a simple constitution capable of being manufactured at low cost, efficiently feeding air-conditioned air to an operator in a cab of the working machine and being post-attached. <P>SOLUTION: In the air conditioner provided on the working machine, an arm rest 1 is provided with a first air-conditioning air-blowing passage 5 at the inside and is provided with a blowing port 10 communicated with the first air-conditioning air-blowing passage 5 on a surface part. A first air-conditioning duct 4a extended from an air conditioner body 3 provided on a seat 2 rear part provided with the arm rest 1 is connected to the first air-conditioning air-blowing passage 5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner suitable for use in a cab of a work machine such as a construction machine.

In recent years, an increasing number of work machines such as construction machines (for example, hydraulic excavators) are equipped with an air conditioner (air conditioner) so that the inside of a cab can be air-conditioned. Usually, an air conditioner unit is arranged at the rear of an operator seat in the cab, and an air outlet for air conditioning air (cooling / heating air) in the cab is opened from here through an air conditioner duct.
In the case of a work machine, operation levers and the like for operating work equipment are disposed in front of and on the side of the operator seat, and the front, side, and rear of the cab are placed outward during work. A large window glass is provided for visual recognition, and the air outlet must be arranged without interfering with the operation lever or the like and without deteriorating the visibility of the surroundings.

In view of this, as a conventional position of the air outlet, generally, the lower part of the portion where the left and right pillars of the cab are provided is employed.
Also, for example, as in the technique described in Patent Document 1, there has been proposed a construction machine in which an air passage is formed inside an operator seat and an air outlet communicating with the air passage is formed at an arbitrary position on the front surface of the seat. Yes.

Further, Patent Document 2 relates to a vehicle seat, wherein the air conditioner is attached to a seat cushion frame, a duct extending from the air conditioner is provided in the seat, and the passage from the air conditioner extends to the seat surface side. A technique is disclosed in which air is blown to the sheet surface side.
Patent Document 3 relates to a construction machine in which an air conditioner main body is disposed between a floor and an operator seat, and the operator seat, an air blowing grill provided on a headrest or an armrest, and an air conditioner main body are unitized. Disclosed techniques are disclosed.

  Further, Patent Document 4 discloses a technique regarding a vehicle air conditioner related to a vehicle such as an automobile, and here, an upper end portion of a box-shaped center console box installed in a central portion of a vehicle interior of the vehicle. A connecting duct extending along the floor surface in the center of the vehicle interior from the front air conditioning unit arranged in the front of the vehicle interior to the center console box is connected to the hollow armrest provided integrally with the armrest. Cold air and warm air are blown out from a plurality of blowout holes formed on the surface of the.

JP 2003-82706 A JP 2002-225539 A Japanese Utility Model Publication No. 6-22021 JP 2004-203336 A

By the way, when considering the air conditioning efficiency, it is preferable to provide the air outlet so that the conditioned air can be directly applied to the operator, and a position close to the operator is preferable.
However, as in the prior art, when the air is blown from the air outlet near the pillar portion in front of the seat, there is a distance from the air outlet to the operator. ) In this case, in order to secure the air flow, it is necessary to make the air conditioner have a high capacity or install a large duct, which causes an increase in cost and installation space. There is also a risk of obstructing the work view.

In addition, the techniques described in Patent Documents 1 to 3 can efficiently apply conditioned air to an operator without affecting other devices, but the seat structure is complicated and expensive, and can be retrofitted. There is a problem that it is difficult to apply to existing work machines.
Furthermore, in the technique described in Patent Document 4, a space in which a duct can be generally arranged is limited in a work machine, and it is difficult to apply the technique related to a vehicle such as an automobile to the work machine.

  The present invention has been devised in view of such problems, can be manufactured at a low cost with a simple configuration, and can efficiently supply conditioned air to an operator in a cab of a work machine. An object of the present invention is to provide an air conditioner for work machines.

  In order to achieve the above object, an air conditioner device for a working machine according to claim 1 of the present invention is an air conditioner device provided in the work machine, the armrest having a first air conditioner air passage inside, and a surface thereof. The first air conditioner air passage is provided with an air outlet that communicates with the first air conditioner air passage, and the first air conditioner air passage extends from the air conditioner body provided at the rear portion of the seat having the armrest. It is characterized by the fact that an air conditioner duct is connected.

The air conditioner for a work machine according to a second aspect of the present invention is the air conditioner for a work machine according to the first aspect, wherein the air outlet is formed on an armrest surface.
The air conditioner for a work machine according to a third aspect of the present invention is the air conditioner for a work machine according to the first or second aspect, wherein the air outlet is formed on the inner surface of the armrest surface. Yes.

  The air conditioner for a work machine according to a fourth aspect of the present invention is the air conditioner for a work machine according to any one of the first to third aspects, wherein the headrest is one of a headrest and a headrest support portion that supports the headrest. This part has a second air-conditioning air passage inside, and has a blower outlet communicating with the second air-conditioning air passage on the surface portion. The second air-conditioning air passage is connected to the air-conditioner main body from the air-conditioner body. The extended second air-conditioner duct is connected.

  A work machine air conditioner according to a fifth aspect of the present invention is the work machine air conditioner according to the fourth aspect, wherein the second air conditioner duct branches off from the first air conditioner duct. It is a feature.

  According to the work machine air conditioner of the present invention, the armrest has a first air conditioner air passage connected to the first air conditioner duct inside, and the surface portion (for example, the armrest surface) has the first air conditioner. Since the air outlet is connected to the air passage, the air is blown directly around the operator's body near the operator, so that the air can be efficiently applied to the operator. For example, if the conditioned air is made cold, the operator can experience coolness from the arm placed on the armrest, and if the conditioned air is made warm, the operator can work while warming the hand.

  Since the air conditioner main body (indoor air conditioner unit) is provided at the rear of the seat, the distance of the first air conditioner duct is reduced, the air conditioner device can be made compact, and the first air conditioner can be made compact. Since the distance between the air ducts is short, the temperature of the air-conditioning air of the air-conditioner main body can be prevented from changing due to the influence of the outside air temperature or the air volume can be reduced, thereby efficiently air-conditioning.

The air conditioner main body and the first air conditioner duct are separate from the seat (including the armrest), and the first air conditioner duct is connected to the armrest from the outside of the seat. The air conditioner for work machine of the invention can be easily attached to an existing work machine.
In addition, if the air outlet is formed on the inner surface of the armrest surface in addition to the armrest surface, the conditioned air is sent in the direction in which the operator is seated, so the air is blown so as to wrap the operator's body. be able to.

  As for the armrest portion, as with the armrest, the headrest portion has a second air conditioner air passage connected to the second air conditioner duct inside and communicates with the second air conditioner air passage on the surface portion. Since the air outlet is provided, the wind blows from the operator's neck so as to directly hit the operator, and the air-conditioning air can be efficiently applied by the operator.

  Further, since the second air-conditioner duct connected to the headrest portion is provided to be branched from the first air-conditioner duct connected to the armrest, there is an advantage that the structure of the duct is simplified. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 to 3 show an air conditioner for a working machine according to a first embodiment of the present invention. FIG. 1 is a side view showing an outline of a seat periphery provided with the armrest and headrest, and FIG. FIG. 3 is a top perspective view and FIG. 3 is a cross-sectional view taken along line AA in FIG.

In the present embodiment, a description will be given of an application of the present invention to an armrest and a headrest of an operator seat in a cab of a construction machine.
As shown in FIG. 1, an indoor air conditioner unit (hereinafter simply referred to as an air conditioner unit) 3 composed of an evaporator, a heater core, and the like is disposed at a position approaching the seat 2 at the rear part of the seat 2 having the armrest 1. . The air conditioner unit 3 is provided with an air conditioner duct (first air conditioner duct) 4 a extending toward the rear portion of the armrest 1 of the seat 2, and one end of the air conditioner duct 4 a is connected to the armrest 1. Yes. An outdoor air conditioner unit (not shown) composed of a condenser and the like is disposed outside the cab.

As shown in the dotted line of FIG. 1 and FIG. 3, a hollow portion is formed in the armrest 1, and this hollow portion is configured as an air conditioner air passage (first air conditioner air passage) 5. Further, as shown in FIG. 2, an air outlet 10 communicating with the air passage 5 is formed on the upper surface (armrest surface) 1 u of the armrest 1.
In this example, the air outlet 10 is composed of a plurality of holes (micro circular holes) 11 arranged vertically and horizontally at equal intervals. Note that the armrest 1 of the present embodiment is made of resin, and the circular holes 11 can be simultaneously molded during resin molding of the upper surface 1u portion of the armrest 1. In this case, for example, the armrest 1 may be covered with a member having excellent air permeability (for example, a mesh skin or a cushion member).

  Further, as indicated by the dotted line in FIG. 1, the headrest 6 also has a hollow portion formed inside the headrest 6 as in the armrest 1, and this hollow portion is an air conditioner air passage (second air conditioner air passage) 7. It is configured as. An air conditioner duct (second air conditioner duct) 4 b branched from the air conditioner duct 4 a connected to the armrest 1 is connected to the back surface 6 b of the headrest 6.

As shown in FIG. 1, an air outlet 20 that communicates with the air passage is formed on the surface 6 a of the headrest 6. This blower outlet 20 may be comprised from the some hole (micro circular hole) 21, and may be comprised by slit shape (refer FIG. 5).
Note that the headrest 6 of the present embodiment is made of resin, and the outlet 20 can be simultaneously molded when the headrest 6 is molded with resin. In this case, for example, the headrest 6 may be covered with a member having excellent air permeability.

  Further, the configuration of the headrest 6 is not limited to this, and a cushion material such as a urethane pad may be covered around a framework made of a steel frame and further covered with a skin. In this case, in the cushion material or the skin, it is only necessary to allow a portion to be blown to air. For example, a hole may be formed in the cushion material, and the hole may be used as the outlet.

The work machine air conditioner according to the first embodiment of the present invention is configured as described above, and thus has the following operations and effects.
The conditioned air from the air conditioner unit 3 is sent out from the air conditioner duct 4a through the air passage 5 and from the air outlet 10 provided in the armrest 1, so that it is directed from the position close to the operator toward the arm or body of the operator. Moreover, the conditioned air is supplied so as to blow around the operator's body, and the air can be efficiently applied to the operator. In particular, for example, in summer, cool air can be experienced from the arm placed on the armrest 1, and in winter, the hand can be warmed by warm air.

In addition, the conditioned air from the air conditioner unit 3 passes through the duct 4b branched from the air conditioner duct 4a, passes through the air passage 7, and is sent out from the air outlet 20 provided in the headrest 6, so that air conditioning is also applied from around the neck. The wind is supplied, and the wind can be efficiently applied by the operator.
Since the air conditioner unit 3 is provided at the rear part of the seat 2, the distance between the air conditioner ducts 4a and 4b can be shortened, the air conditioner apparatus can be made compact, and the air conditioner ducts 4a and 4b can be made compact. Since the distance is short, the temperature of the air-conditioning air of the air-conditioning unit 3 can be prevented from changing due to the influence of the outside air temperature or the air volume can be reduced, and air-conditioning can be performed efficiently.

The air conditioner unit 3 and the air conditioner ducts 4a and 4b are separate from the seat 2 including the armrest 1 and the headrest 6. The air conditioner ducts 4a and 4b are connected to the armrest 1 and the headrest 6 from the outside of the seat 2. Therefore, the air conditioner for work machines of the present invention can be easily retrofitted to existing work machines.
Here, a total of 30 circular holes 11 of 3 rows and 10 columns are formed in the armrest 1, but the number and size of the circular holes 11 are for convenience and can be appropriately set.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5 show an air conditioner for a working machine according to a second embodiment of the present invention. FIG. 4 is a schematic sectional view thereof (corresponding to FIG. 3), and FIG. It is a figure explaining the flow of the conditioned air from the armrest in the prepared seat. The same members and the like as those in the first embodiment will be described with the same reference numerals as those in the first embodiment.

  In the present embodiment, as shown in FIG. 4, the air outlet 10 of the armrest 1 composed of a plurality of circular holes 11 is further provided with the upper surface 1u of the armrest 1 in addition to the upper surface 1u of the armrest 1 similar to that of the first embodiment. Is also formed on a curved surface 1c that gently connects the inner side surface 1s adjacent to the upper surface 1u and the inner side surface 1s. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

Since the air conditioner for work machines according to the second embodiment of the present invention is configured as described above, the following operations and effects are obtained.
Since the conditioned air from the armrest 1 passing through the circular hole 11 formed in the inner surface 1s and the curved surface 1c is sent out in the direction in which the operator is seated as shown in FIG. 4, the conditioned air from the armrest 1 is As a whole, it is sent out as shown by the arrow shown in FIG. 5, and it is possible to blow air so as to further wrap up the operator's body.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic cross-sectional view (a diagram corresponding to FIGS. 3 and 4) illustrating an air conditioner for a working machine according to a third embodiment of the present invention. The same members and the like as those in the first embodiment will be described with the same reference numerals as those in the first embodiment.

  In the present embodiment, as shown in FIG. 6, the outer shell constituting the upper surface 1u of the armrest 1 is formed to have a thickness d larger than those of the first and second embodiments, and the air outlet in the present embodiment. A plurality of holes (circular holes) 11 ′ forming 10 are also formed on the upper surface 1 u of the armrest 1 so as to have a predetermined length. And this circular hole 11 'inclines within the outer shell of thickness d, and it is opened obliquely toward the operator side at a predetermined angle from the air duct 5 toward the outside of the armrest 1 respectively. .

  Here, the inclination of the circular hole 11 ′ in the outer shell having the thickness d functions as a guide in the direction of blowing the conditioned air from the armrest 1, and the thickness d is large enough to function as this guide. Say it. If it is effective for directivity, it is not necessary to form the outer shell so as to have a large thickness d, and it may be formed so that only the peripheral portion of the circular hole 11 ′ serving as a guide function has a large thickness d. good.

The work machine air conditioner according to the third embodiment of the present invention is configured as described above, and thus has the following operations and effects.
According to the present embodiment, the air conditioned air from the armrest 1 is as shown by the arrows shown in FIG. 6 only by providing the air outlet 10 only on the upper surface 1u without forming the air outlet 10 on the armrest side surface 1s and the curved surface 1c. It is sent obliquely in the direction in which the operator is seated, and the air can be blown so as to wrap up the operator's body.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 7 is a top perspective view showing an air conditioner for a working machine according to a fourth embodiment of the present invention. The same members and the like as those in the first embodiment will be described with the same reference numerals as those in the first embodiment.
In this embodiment, a plurality of slit-like holes (slits) 12 are formed as the air outlet 10 of the armrest 1 as shown in FIG. 7 instead of the plurality of minute circular holes 11 in the first embodiment. Is.

  Since the air conditioner for work machines according to the fourth embodiment of the present invention is configured as described above, the following operations and effects are obtained.

Since the air outlet 10 of the armrest 1 is formed by the slit 12, there is an advantage that the air outlet 10 can be easily formed as compared with the case where the air outlet 10 is formed in a plurality of minute circular holes 11.
Here, a total of nine slits 12 in three rows and three columns are formed here, but the number and arrangement of the slits 12 are for convenience and can be set as appropriate.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a top perspective view showing an air conditioner for a working machine according to a fifth embodiment of the present invention. The same members and the like as those in the first embodiment will be described with the same reference numerals as those in the first embodiment.

  In this embodiment, instead of the plurality of minute circular holes 11 in the first embodiment, as the outlet 10 of the armrest 1, as shown in FIG. In which blades are attached in parallel at regular intervals and the angle can be adjusted).

Since the air conditioner for work machines according to the fifth embodiment of the present invention is configured as described above, it has the following operations and effects.
If the angle of the louver 13 is set to be vertical, the conditioned air from the armrest 1 is sent straight upward, and if the angle is set obliquely to the operator side, it can be sent so as to wrap the operator's body.
In this case, for example, the portion provided with the louver 13 is covered with a cloth (mesh-like skin, cushioning material, etc.) having excellent air permeability so that the operator does not touch the louver 13 directly when the armrest 1 is put on the elbow. It is preferable to make it.

  Moreover, although the blower outlet 10 was divided | segmented into three in the extending direction of an armrest here, the division | segmentation number of the blower outlet 10 is not restricted to this, You may form in only one, two or four, etc. You may divide and form.

[Others]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.
For example, the air conditioner may have either a cooling function or a heating function.
Moreover, although this embodiment demonstrated the case where the armrest and headrest of this invention were applied to the operator seat in the cab of a construction machine, it can be applied also to the seat of other work machines.

It is a side view which shows the outline | summary of the sheet | seat periphery which provided the armrest and headrest which concern on 1st Embodiment of this invention. It is an upper surface perspective view which shows the armrest which concerns on 1st Embodiment of this invention. The armrest which concerns on 1st Embodiment of this invention is shown, and it is AA arrow sectional drawing of FIG. It is typical sectional drawing of the armrest which concerns on 2nd Embodiment of this invention. It is a figure explaining the flow of the conditioned air from the armrest which concerns on 2nd Embodiment of this invention. It is typical sectional drawing of the armrest which concerns on 3rd Embodiment of this invention. It is an upper surface perspective view which shows the armrest which concerns on 4th Embodiment of this invention. It is an upper surface perspective view which shows the armrest which concerns on 5th Embodiment of this invention.

Explanation of symbols

1 Armrest 1c Curved surface 1s Inner surface 1u Upper surface (armrest surface)
2 seats (operator seats)
3 Air conditioner unit (indoor unit, air conditioner body)
4a, 4b Air-conditioner duct 5 Air passage (first air-conditioner air passage)
6 Headrest 6a Front surface 6b Back surface 7 Air passage (second air conditioner air passage)
DESCRIPTION OF SYMBOLS 10 Outlet 11, 11 'Circular hole 12 Slit 13 Louver 20 Outlet 21 Circular hole d Thickness of outer shell on upper surface of armrest

Claims (5)

An air conditioner provided for a work machine,
The armrest has a first air-conditioning air passage inside, and a blowout port communicating with the first air-conditioning air passage on the surface portion.
A first air conditioner duct extending from an air conditioner main body provided at a rear portion of the seat provided with the armrest is connected to the first air conditioner air passage. apparatus. The air conditioner for a work machine according to claim 1, wherein the air outlet is formed on an armrest surface. The air conditioner for a work machine according to claim 1 or 2, wherein the air outlet is formed on an inner surface of the armrest surface. Any part of the headrest and the headrest support part that supports the headrest has a second air-conditioning air passage inside, and a blowout port communicating with the second air-conditioning air passage on the surface portion.
The work according to any one of claims 1 to 3, wherein a second air conditioner duct extending from the air conditioner body is connected to the second air conditioner air passage. Air conditioner for machinery. The air conditioner for a work machine according to claim 4, wherein the second air conditioner duct branches off from the first air conditioner duct.

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