JPH1111140A - Air conditioner for working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the ground height of a driving part in an air conditioner for driving cabin which is provided in a housing chamber formed by a cabin top plate and an air conditioner cover on the top plate. SOLUTION: A condensing device part 11 and an evaporating device part 13 are provided in a housing chamber formed by the top plate of a driving cabin 4 and an air conditioner cover 17 on the top plate. A fluid receiving device part 14 installed to a medium circulating passage for connecting the condensing device part 11 to the evaporating device part 13 is arranged not between the cabin top plate and the air conditioner cover 17 but near the rear angle part of the driving cabin 4.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、コンバイや農用ト
ラクターとかの農用車両、バックホウとかの建設機械な
どの作業車の空調装置、詳しくは、運転キャビン空調の
ための凝縮装置部と蒸発装置部とを、運転キャビンの天
板とこの天板上の空調機カバーとが形成する収容室に設
けてある作業車の空調装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a working vehicle such as a combine vehicle or an agricultural tractor, a construction vehicle such as a backhoe, and more particularly, to a condensing unit and an evaporating unit for operating cabin air conditioning. The present invention relates to an air conditioner for a work vehicle provided in an accommodation room formed by a top plate of an operation cabin and an air conditioner cover on the top plate.

【０００２】[0002]

【従来の技術】上記空調装置にあっては、液冷媒の貯え
ができるように受液装置部を備えられる。従来、この受
液装置部は、凝縮装置部と蒸発装置部とを接続する媒体
循環路に備えられるものであることから、キャビン天板
と空調機カバーとが形成する収容室に設置されていた。2. Description of the Related Art The above-mentioned air conditioner is provided with a liquid receiving device so that a liquid refrigerant can be stored. Conventionally, since the liquid receiving device is provided in a medium circulation path connecting the condenser device and the evaporator device, the liquid receiving device has been installed in a storage room formed by the cabin top plate and the air conditioner cover. .

【０００３】[0003]

【発明が解決しようとする課題】従来、キャビン天板と
空調機カバーとの間に受液装置部を全体にわたって収容
できる上下高さの高いスペースを確保する必要があるこ
とから運転部の地上高が高くなり、天井の低い納屋の場
合には格納できないとか、格納しにくくなることがあっ
た。本発明の目的は、運転部の地上高さを極力低くした
り、受液装置部での冷媒チェックを行いやすくすること
が可能な作業車の空調装置を提供することにある。Conventionally, it is necessary to secure a high vertical space between the cabin top plate and the air conditioner cover so that the liquid receiving unit can be entirely accommodated. In a barn with a low ceiling, it could not be stored or was difficult to store. An object of the present invention is to provide an air conditioner for a working vehicle that can reduce the height of the operation unit above the ground as much as possible and make it easier to check the refrigerant in the liquid receiving device unit.

【０００４】[0004]

【課題を解決するための手段】請求項１による発明の構
成、作用、効果はつぎのとおりである。The constitution, operation and effect of the invention according to claim 1 are as follows.

【０００５】〔構成〕運転キャビン空調のための凝縮装
置部と蒸発装置部とを、運転キャビンの天板とこの天板
上の空調機カバーとが形成する収容室に設けてある作業
車の空調装置において、前記凝縮装置部と前記蒸発装置
部とを接続する媒体循環路が有する受液装置部を前記収
容室以外の収容部に配置してある。[Construction] A condensing unit and an evaporating unit for operating cabin air conditioning are provided in an accommodation room formed by a top plate of the operating cabin and an air conditioner cover on the top plate. In the apparatus, a liquid receiving unit provided in a medium circulation path connecting the condensing unit and the evaporating unit is disposed in a storage unit other than the storage chamber.

【０００６】〔作用〕受液装置部の収容部を運転キャビ
ンの後側角部など、キャビン天板と空調機カバーとの間
とは異なる箇所に配置し、キャビン天板と空調機カバー
との間に配置されていた従来に比してそれらの間の高さ
を低くすることを可能にしながら、また、空調機カバー
を取り外す必要がないとか受液装置部を低い箇所から取
り扱えるなど、受液装置部を従来よりも容易かつ楽に点
検することを可能にしながら受液装置部を装備するもの
である。[Operation] The accommodating portion of the liquid receiving device is disposed at a location different from the space between the cabin top plate and the air conditioner cover, such as the rear corner of the operating cabin, and the space between the cabin top plate and the air conditioner cover is provided. It is possible to reduce the height between them compared to the conventional one that was placed between them, and also to remove the air-conditioning unit cover or handle the liquid-receiving device from a low place, such as from a low place The apparatus is provided with a liquid receiving device while allowing the device to be inspected more easily and easily than before.

【０００７】〔効果〕キャビン天板と空調機カバーとで
形成される収容室の高さを低くして運転部での地上高さ
を低くし、天井の低い納屋でも格納しやすくしたり、受
液装置部を容易かつ楽に点検して冷媒量を楽にチェクで
きるようにすることが可能になった。[Effect] The height of the accommodation room formed by the cabin top plate and the air conditioner cover is reduced to reduce the height above the ground in the operation section, and to facilitate storage in a barn with a low ceiling, It has become possible to easily and easily check the liquid device section and easily check the refrigerant amount.

【０００８】請求項２による発明の構成、作用、効果は
つぎのとおりである。The structure, operation and effect of the invention according to claim 2 are as follows.

【０００９】〔構成〕請求項１による発明の構成におい
て、前記受液装置部の上端部が前記収容室に入り込む状
態で受液装置部を前記収容部に収容してある。[Structure] In the structure according to the first aspect of the present invention, the liquid receiving device portion is housed in the housing portion with the upper end of the liquid receiving device portion entering the housing chamber.

【００１０】〔作用〕受液装置部の上端部を収容室に入
り込ませ、受液装置部を備える媒体循環路がその全体に
わたって収容室に入り込むことを可能にしながら受液装
置部を収容室と異なる収容部に配置するものである。す
なわち、受液装置部が全体にわたって収容室から外れる
と、媒体循環路のうちの受液装置部の近くに位置する部
分も収容室からその外側に外れることになり、媒体循環
路の全長が長くなったり、媒体循環路の屈曲箇所が多く
なったりするのであるが、この場合に比して、媒体循環
路を長さの面でも形状の面でも簡素にすることを可能に
しながら、受液装置部を収容室と異なる収容部に配置す
るものである。[Operation] The upper end portion of the liquid receiving device is inserted into the storage chamber, and the medium circulation path including the liquid receiving device is allowed to enter the storage chamber entirely. They are arranged in different storage units. That is, when the liquid receiving device part is entirely removed from the storage chamber, a portion of the medium circulation path located near the liquid receiving device part also comes out of the storage chamber to the outside thereof, and the overall length of the medium circulation path becomes longer. Or the number of bends in the medium circulation path increases. In comparison with this case, it is possible to simplify the medium circulation path in terms of both length and shape, The unit is arranged in a storage unit different from the storage room.

【００１１】〔効果〕受液装置部が収容室と異なる収容
部に位置して運転部での地上高さを低くできる割りに
は、媒体循環路が簡素になって媒体がスムーズに流動す
ることを可能にできる。[Effect] In spite of the fact that the liquid receiving unit is located in a storage section different from the storage chamber and the ground height in the operation section can be reduced, the medium circulation path is simplified and the medium flows smoothly. Can be made possible.

【００１２】請求項３による発明の構成、作用、効果は
つぎのとおりである。The structure, operation and effect of the invention according to claim 3 are as follows.

【００１３】〔構成〕請求項１又は２による発明の構成
において、前記収容部を、前記運転キャビンの後側角付
近に前記受液装置部をキャビン側壁に沿わせて収容する
ように形成してある。[0013] [Constitution] In the constitution of the invention according to claim 1 or 2, the accommodating portion is formed near the rear corner of the operating cabin to accommodate the liquid receiving device along the cabin side wall. is there.

【００１４】〔作用〕受液装置部を運転キャビンの後側
角付近にキャビン側壁に沿わせて収容することにより、
運転キャビンの内部から外側を見通す際などに受液装置
部が障害物になりにくいようにして受液装置部を装備で
きる。[Operation] By accommodating the liquid receiving unit along the cabin side wall near the rear corner of the operating cabin,
The liquid receiving device can be equipped so that the liquid receiving device does not easily become an obstacle when the outside of the operating cabin is seen from the inside.

【００１５】〔効果〕受液装置部が収容室と異なる収容
部に位置して運転部での地上高さを低くできる割りに
は、受液装置部が見通しの障害物になりにくくて運転が
しやすくなる。[Effect] Even though the liquid receiving device is located in a storage unit different from the storage room and the ground height in the operating unit can be reduced, the liquid receiving device is unlikely to become an obstruction in the line of sight and operation is difficult. Easier to do.

【００１６】請求項４による発明の構成、作用、効果は
つぎのとおりである。The structure, operation and effect of the invention according to claim 4 are as follows.

【００１７】〔構成〕請求項３による本発明の構成にお
いて、圧縮装置部を原動部に設けるとともに、前記凝縮
装置部および前記蒸発装置部を前記圧縮装置部に接続す
る媒体循環路を、前記運転キャビンの左右の後側角付近
のうちの前記受液装置部用収容部が位置する側とは反対
側の後側角付近にキャビン側壁に沿って通る状態に配置
してある。[Structure] In the structure of the present invention according to claim 3, a compression device section is provided in a driving section, and a medium circulation path connecting the condensing section and the evaporating section to the compression section is operated by the operation. It is arranged so as to pass along the cabin side wall near a rear corner of the left and right rear corners of the cabin opposite to the side where the liquid receiving device housing portion is located.

【００１８】〔作用〕受液装置部と、前記媒体循環路と
を左側の後側角付近と、右側の後側角付近とに振り分け
て配置するものである。すなわち、受液装置部と媒体循
環路とを纏めていずれか一方の後側角付近に配置する
と、この収容物の嵩が大になり、キャビン内から外部を
見通す際などに障害物になりやすい。これに対し、受液
装置部と媒体循環路とが両側に別れ、各後側角付近にお
ける収容物の嵩が極力低くなって障害物になりにくいよ
うにして受液装置部と媒体循環路とを装備するものであ
る。[Operation] The liquid receiving device and the medium circulation path are divided and arranged near the left rear corner and the right rear corner. In other words, when the liquid receiving device and the medium circulation path are collectively arranged near one of the rear corners, the bulk of the container becomes large, and the container easily becomes an obstacle when the outside is seen from inside the cabin. . On the other hand, the liquid receiving device and the medium circulation path are separated on both sides, and the volume of the stored material in the vicinity of each rear corner is reduced as much as possible so as to be less likely to become an obstacle. It is equipped with.

【００１９】〔効果〕受液装置部が収容室と異なる収容
部に位置して運転部での地上高さを低くできる割りに
は、受液装置部も媒体循環路も見通しの障害物になりに
くくて運転がしやすくなる。[Effect] Even though the liquid receiving device is located in a different storage unit from the storage room and the height above the operation unit can be reduced, both the liquid receiving device and the medium circulation path become obstructive obstacles. Difficult to drive.

【００２０】[0020]

【発明の実施の形態】図１に示すように、稲、麦などの
植立穀稈を引き起こすとともに刈取り、刈取り穀稈を機
体後方に搬送する刈取り前処理部１を、クローラ走行装
置２によって自走するとともにエンジンＥを有する原動
部３、運転キャビン４を備える走行機体の前部に昇降操
作自在に連結するとともに、刈取り前処理部１からの刈
取り穀稈を脱穀処理する脱穀装置５、脱穀粒を貯留する
穀粒タンク６、この穀粒タンク６から穀粒を回転スクリ
ューによって搬出する搬出装置７を前記自走機体に備え
させて、コンバインを構成してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a crawler traveling unit 2 automatically controls a pre-cutting unit 1 which causes planted grain culms such as rice and wheat, cuts and transports the cut grain culms to the rear of the machine. A threshing device 5 for threshing the harvested culm from the pre-cutting processing unit 1 while being connected to the front of a traveling body having a driving unit 3 having an engine E and an operating cabin 4 and having an engine E, and threshing the harvested culm from the pre-cutting processing unit 1. The self-propelled body is provided with a grain tank 6 for storing the particles, and an unloading device 7 for unloading the grains from the grain tank 6 by a rotary screw, to constitute a combine.

【００２１】図２に示すように、前記走行装置２や脱穀
装置５などを駆動する前記エンジンＥと、このエンジン
Ｅに連動させて前記原動部３に設けたコンプレッサー８
とによって圧縮装置部９を構成し、この圧縮装置部９の
コンプレッサー８に媒体循環路１０を介して空調機とし
ての凝縮装置部１１の凝縮器１１ａを、媒体循環路１２
を介して空調機としての蒸発装置部１３の蒸発器１３ａ
をそれぞれ接続するとともに、前記凝縮装置部１１の凝
縮器１１ａと蒸発装置部１３の蒸発器１３ａとを、液冷
媒貯留用の受液装置部１４と、膨張弁１５とを有する媒
体循環路１６によって接続して、空調装置を構成してあ
る。この空調装置は、運転キャビン４の空調を行うもの
であり、詳しくは次の如く構成してある。As shown in FIG. 2, the engine E which drives the traveling device 2 and the threshing device 5 and the like, and a compressor 8 provided in the driving unit 3 in conjunction with the engine E
And a compressor 11 of the condenser unit 11 serving as an air conditioner is connected to the compressor 8 of the compressor unit 9 via a medium circulation path 10 and a medium circulation path 12
Evaporator 13a of evaporator unit 13 as an air conditioner
And a condenser 11a of the condenser unit 11 and an evaporator 13a of the evaporator unit 13 are connected by a medium circulation path 16 having a liquid receiver storage unit 14 and an expansion valve 15. They are connected to form an air conditioner. This air conditioner performs air conditioning of the driving cabin 4, and is configured in detail as follows.

【００２２】図３に示すように、前記凝縮装置部１１
は、運転キャビン４の天板４ａと、この天板上に位置す
る空調機カバー１７とが形成する収容室１８のキャビン
後方側に設置してある。前記蒸発装置部１３は、前記収
容室１８のキャビン前方側に設置してある。As shown in FIG. 3, the condensing unit 11
Is installed on the rear side of the accommodation room 18 formed by the top plate 4a of the driving cabin 4 and the air conditioner cover 17 located on the top plate. The evaporator unit 13 is installed on the cabin front side of the accommodation room 18.

【００２３】図３および図４に示すように、空調機カバ
ー１７は、天板部１７ａと、この天板部１７ａの周縁部
から延出する前側板部、横側板部、後側板部とによって
形成し、キャビン天板４ａの上面側の四隅部に立設する
取付けブラケット１９に天板部１７ａを取付けボルトに
よって締付け連結することによって運転キャビン４に取
り付けるように構成してある。図３および図５に示すよ
うに、空調機カバー１７を運転キャビン４に取付ける
と、空調機カバー１７の後端部分が運転キャビン４の横
側壁部４ｂどうしの間でキャビン天板４ａよりもキャビ
ン後方側に突出して空調機カバー１７と運転キャビン４
との間にキャビン下向きの開口２０が形成されるととも
に、キャビン天板４ａの周縁部や、前記収容室１８を蒸
発装置部１３の収容部と、凝縮装置部１１の収容部とに
仕切るようにキャビン天板４ａが備える仕切り壁部材２
１の縁部に付設してあるシール材としてのウエザースト
リップ２２が、図６および図７に明示する如く空調機カ
バー１７の側板部や天板部１７ａの内面側に圧接して、
前記開口２０を除く大部分でのキャビン天板４ａと空調
機カバー１７との間、前記仕切り壁部材２１と空調機カ
バー１７との間をそれぞれシールする。これにより、前
記開口２０が収容室１８の後端部において機体下方向き
に開口する収容室１８の吸気口２０となり、空調機カバ
ー１７とキャビン天板４ａとが、前記吸気口２０を凝縮
装置部１１および蒸発装置部１３の吸気側に連通させる
空気供給路Ｌを形成する。この空気供給路Ｌは、凝縮装
置部１１および蒸発装置部１３それぞれの電動回転ファ
ン１１ｂ，１３ｂの送風作用により、キャビン外気を吸
気口２０から吸引して凝縮装置部１１および蒸発装置部
１３に供給するためのものである。また、この空気供給
路Ｌは、凝縮装置部１１よりも空気流動方向下手側に位
置する蒸発装置部１３に対しては、前記仕切り壁部材２
１に形成するとともに外気フィルター２３を備えさせて
ある貫通孔２１ａを通して空気供給するように構成して
ある。前記吸気口２０には、キャビン天板４ａが支持す
るパンチング板金で成る除塵具２４を備えさせてあり、
この除塵具２４は、空気供給路Ｌに流入する空気に混入
するワラ屑などの塵埃を除去する。前記貫通孔２１ａが
備える前記外気フィルター２３は、貫通孔２１ａから蒸
発装置部１３の方に流入する空気にろか作用し、その空
気に混入するワラ屑などの塵埃を除去する。As shown in FIGS. 3 and 4, the air conditioner cover 17 includes a top plate 17a and a front plate, a lateral plate, and a rear plate extending from the periphery of the top plate 17a. The top plate 17a is attached to the driving cabin 4 by fastening the top plate 17a to a mounting bracket 19 provided at four corners on the upper surface side of the cabin top plate 4a with mounting bolts. As shown in FIGS. 3 and 5, when the air conditioner cover 17 is attached to the operation cabin 4, the rear end of the air conditioner cover 17 is located between the side wall portions 4 b of the operation cabin 4 and the cabin top plate 4 a. The air conditioner cover 17 and the operating cabin 4 projecting rearward
And a cabin downward opening 20 is formed between the evaporator unit 13 and the peripheral portion of the cabin top plate 4a and the accommodating chamber 18 into an accommodating unit of the evaporating unit 13 and an accommodating unit of the condensing unit 11. Partition wall member 2 provided in cabin top plate 4a
The weather strip 22 as a sealing material attached to the edge of the air conditioner 1 is pressed against the side plate of the air conditioner cover 17 and the inner surface of the top plate 17a as clearly shown in FIGS.
The space between the cabin top plate 4a and the air conditioner cover 17 and the space between the partition wall member 21 and the air conditioner cover 17 are sealed in most parts except the opening 20. As a result, the opening 20 becomes the intake port 20 of the accommodation chamber 18 which opens downward at the rear end of the accommodation chamber 18 at the rear end of the accommodation chamber 18, and the air conditioner cover 17 and the cabin top plate 4a connect the intake port 20 to the condenser unit. An air supply passage L communicating with the suction side of the evaporator 11 and the evaporator unit 13 is formed. The air supply passage L sucks the outside air of the cabin from the intake port 20 and supplies the air to the condenser unit 11 and the evaporator unit 13 by the blowing action of the electric rotating fans 11b and 13b of the condenser unit 11 and the evaporator unit 13, respectively. It is for doing. Further, the air supply passage L is connected to the partition wall member 2 with respect to the evaporator unit 13 located on the lower side in the air flow direction than the condenser unit 11.
1, and air is supplied through a through-hole 21a provided with an outside air filter 23. The intake port 20 is provided with a dust remover 24 made of a punched sheet metal supported by the cabin top plate 4a,
The dust remover 24 removes dust such as straw chips mixed into the air flowing into the air supply path L. The outside air filter 23 provided in the through hole 21a acts on the air flowing into the evaporator unit 13 from the through hole 21a, and removes dust such as straw chips mixed into the air.

【００２４】図３および図４に示すように、空調機カバ
ー１７の天板部１７ａの後端側に排気口２５を備えさせ
るとともに、凝縮装置部１１の排気筒１１ｃに接続して
いる弾性材製の筒体２６により、排気筒１１ｃからの排
出風が収容室１８に漏れ出ないで排気口２５から流出し
ていくように排気筒１１ｃと天板部１７ａとの間をシー
ルしてある。これにより、排気口２５は、空調機カバー
１７の天板１７ａで成る収容室１８の天板において前記
吸気口２０とは異なる方向としての機体上向きに開口す
る収容室１８の排気口となり、凝縮装置部１１からの排
出風を収容室１８の外部に排出する。As shown in FIGS. 3 and 4, an exhaust port 25 is provided at the rear end side of the top plate 17a of the air conditioner cover 17, and an elastic member connected to the exhaust pipe 11c of the condenser unit 11 is provided. The exhaust pipe 11c and the top plate 17a are sealed by a cylindrical body 26 such that the exhaust air from the exhaust pipe 11c flows out of the exhaust port 25 without leaking into the storage chamber 18. As a result, the exhaust port 25 becomes an exhaust port of the housing chamber 18 that opens upward in the body, which is a direction different from the intake port 20, on the top plate of the housing chamber 18 formed of the top board 17 a of the air conditioner cover 17. The air discharged from the unit 11 is discharged to the outside of the accommodation room 18.

【００２５】キャビン天板４ａの蒸発装置部１３と凝縮
装置部１１との間の下向き面部分に、内気フィルター２
７を備える吸気口２８を形成してある。この吸気口２８
は、前記空気供給路Ｌの凝縮装置部１１および外気フィ
ルター２３よりも下流側に位置して空気供給路Ｌを介し
て蒸発装置部１３の吸気側に連通し、運転キャビン４の
内部空気が蒸発装置部１３に還流することを可能にす
る。前記内気フィルター２７は、蒸発装置部１３に還流
するべく空気供給路Ｌに流入する空気にろか作用し、そ
の空気に混入する塵埃を除去する。キャビン天板４ａの
前記吸気口２８よりも少しキャビン前方側に位置する下
向き面部分に吹出口２９を、キャビン内上部の両横端側
に折り曲げ加工したキャビン天板４の端部分で形成した
横向き面部分に吹出口３０をそれぞれ形成するととも
に、いずれの吹出口２９，３０も蒸発装置部１３の排気
側に連通させてある。The inside air filter 2 is provided on the downward surface of the cabin top plate 4a between the evaporator unit 13 and the condenser unit 11.
7 is formed. This inlet 28
Is located downstream of the condenser unit 11 and the outside air filter 23 of the air supply passage L, communicates with the intake side of the evaporator unit 13 through the air supply passage L, and evaporates the internal air of the operation cabin 4. It is possible to return to the device unit 13. The inside air filter 27 acts on the air flowing into the air supply path L so as to return to the evaporator unit 13, and removes dust mixed in the air. An air outlet 29 is formed on a downward surface portion of the cabin top plate 4a which is located slightly forward of the intake port 28 than the intake port 28. The air outlets 30 are respectively formed in the surface portions, and both the air outlets 29 and 30 are communicated with the exhaust side of the evaporator unit 13.

【００２６】つまり、圧縮装置部９は、エンジンＥによ
ってコンプレッサー８を駆動し、このコンプレッサー８
によって冷媒を圧縮処理する。圧縮処理された冷媒は、
媒体循環路１０を通って凝縮装置部１１の凝縮器１１ａ
に流入する。凝縮装置部１１は、回転ファン１１ｂによ
る送風作用により、キャビン外気を前記吸気口２０から
空気供給路Ｌを介して凝縮器１１ａに冷却風として導入
して冷媒の冷却処理を行い、この冷媒冷却のための温度
上昇した熱風を排気口２５から収容室１８の外部に排出
する。冷却処理された冷媒は、媒体循環路１６の膨張弁
１５を通り、温度低下して蒸発装置部１３の蒸発器１３
ａに流入する。蒸発装置部１３は、ファン１３ｂによる
送風作用により、キャビン外気を前記吸気口２０から空
気供給路Ｌに吸引し、外気フィルター２３を通して塵埃
除去した状態で蒸発器１３ａに導入し、キャビン内気を
前記天板吸気口２８から内気フィルター２７を通して塵
埃除去した状態で空気供給路Ｌに吸引して蒸発器１３ａ
に導入し、キャビン外からの空気と、キャビン内からの
空気とを合流させて冷却し、温度低下した合流空気を吹
出口２９と３０とからキャビン内に送り込む。蒸発装置
部１３の蒸発器１３ａで空気の冷却作用を果たした冷媒
は、媒体循環路１２を通って圧縮装置部９のコンプレッ
サー８に戻り、再度圧縮処理される。これにより、蒸発
装置部１３は、キャビン内気を運転キャビン４と蒸発装
置部１３との間で循環させてキャビン内を冷房する空調
と、キャビン外気を冷却させてキャビン内に送り込んで
冷房する空調とを行う。That is, the compressor unit 9 drives the compressor 8 by the engine E, and the compressor 8
Compresses the refrigerant. The compressed refrigerant is
The condenser 11a of the condenser unit 11 passes through the medium circulation path 10.
Flows into. The condensing unit 11 introduces the outside air of the cabin into the condenser 11a from the intake port 20 through the air supply path L as a cooling air by a blowing action of the rotating fan 11b to perform a cooling process of the refrigerant, thereby performing the cooling of the refrigerant. The hot air whose temperature has risen is discharged from the exhaust port 25 to the outside of the storage chamber 18. The cooling-processed refrigerant passes through the expansion valve 15 of the medium circulation path 16, and its temperature is reduced, and the evaporator 13 of the evaporator unit 13 is cooled.
flows into a. The evaporator unit 13 sucks the outside air of the cabin from the intake port 20 into the air supply path L by the blowing action of the fan 13b, and introduces the air inside the cabin into the evaporator 13a in a state where dust has been removed through the external air filter 23. The dust is removed from the plate intake port 28 through the inside air filter 27 and is sucked into the air supply path L to evaporate 13a.
The air from the outside of the cabin and the air from the inside of the cabin are combined and cooled, and the combined air whose temperature has dropped is sent into the cabin from the outlets 29 and 30. The refrigerant that has performed the cooling function of the air in the evaporator 13a of the evaporator unit 13 returns to the compressor 8 of the compressor unit 9 through the medium circulation path 12, and is compressed again. Thereby, the evaporator unit 13 circulates air inside the cabin between the operating cabin 4 and the evaporator unit 13 to cool the cabin, and cools the outside air of the cabin and sends it into the cabin for cooling. I do.

【００２７】図２に示すように、前記蒸発装置部１３の
蒸発器１３ａに、ウォータバルブ３１を有する媒体循環
路３２を接続してある。この媒体循環路３２は、原動部
３で温度上昇した熱媒を蒸発器１３ａに供給し、この蒸
発器１３ａで温度低下した熱媒を原動部３に戻して再度
温度上昇させ、蒸発装置部１３の回転ファン１３ｂによ
って吹出口２９，３０から運転キャビン４に温風を送り
込んで暖房することを可能にするものである。As shown in FIG. 2, a medium circulation path 32 having a water valve 31 is connected to the evaporator 13a of the evaporator unit 13. The medium circulation path 32 supplies the heat medium whose temperature has risen in the driving unit 3 to the evaporator 13a, returns the heat medium whose temperature has fallen in the evaporator 13a to the driving unit 3 and raises the temperature again. It is possible to feed warm air from the outlets 29 and 30 to the operation cabin 4 by the rotary fan 13b for heating.

【００２８】図７（イ）に明示するように、前記内気フ
ィルター２７は、吸気口２８の周囲でキャビン天板４ａ
の下面側に取付けねじ３３によって締め付けることによ
り、運転キャビン４の内部に取り外せるように着脱自在
に取り付けてある。前記外気フィルター２３は、前記吸
気口２８の直上方に位置する取付け位置で、かつ、上端
側が下端側よりも蒸発装置部１３の方に近づく状態にキ
ャビン天板４ａに対して傾斜する取付け姿勢で前記仕切
り壁部材２１に取り付けてある。仕切り壁部材２１の両
側面のうちの前記吸気口２８に対向する方の側面がわ
に、前記貫通孔２１ａの全周囲にわたるフィルター受止
め部２１ｂを備えさせ、図８に示す如く外気フィルター
２３の周縁部に当て付けて外気フィルター２３のフィル
ター受止め部２１ｂからの外れ止めを行うように構成し
た当付け部材３４を外気フィルター２３の両横側に位置
する取付けボルト３５で仕切り壁部材２１に締め付け連
結することにより、外気フィルター２３を仕切り壁部材
２１の吸気口２８に面する方の側面がわに着脱自在に取
り付けてあり、外気フィルター２３を吸気口２８を通し
て運転キャビン４の内側に取り外すことを可能にしてあ
る。すなわち、内気フィルター２７および外気フィルタ
ー２３の清掃とか交換とかを行う際には、内気フィルタ
ー２７を運転キャビン４の内部から着脱し、外気フィル
ター２３は、図７（ロ）に示す如く内気フィルター２７
を取り外した吸気口２８を介して運転キャビン４の内部
から着脱するのである。As clearly shown in FIG. 7 (a), the inside air filter 27 is provided around the intake port 28 around the cabin top plate 4a.
It is detachably attached to the lower surface side of the operating cabin 4 by being tightened with a mounting screw 33 so as to be detachable inside the operating cabin 4. The outside air filter 23 is mounted at a mounting position located directly above the air inlet 28, and in a mounting posture in which the upper end is inclined with respect to the cabin top plate 4a with the upper end closer to the evaporator unit 13 than the lower end. It is attached to the partition wall member 21. The side of the partition wall member 21 facing the intake port 28 is provided with a filter receiving portion 21b around the entire periphery of the through hole 21a. An abutting member 34 configured to be applied to the peripheral portion to prevent the outside air filter 23 from coming off from the filter receiving portion 21b is fastened to the partition wall member 21 by mounting bolts 35 located on both sides of the outside air filter 23. By connecting, the outside air filter 23 is removably attached to the side of the partition wall member 21 facing the intake port 28, and the outside air filter 23 can be removed inside the operation cabin 4 through the intake port 28. It is possible. That is, when performing cleaning or replacement of the inside air filter 27 and the outside air filter 23, the inside air filter 27 is detached from the inside of the operation cabin 4, and the outside air filter 23 is attached to the inside air filter 27 as shown in FIG.
Is removed from the inside of the driving cabin 4 through the intake port 28 from which the air is removed.

【００２９】図５および図９に示すように、前記受液装
置部１４を運転キャビン４の左右の後側角のうちの一方
の後側角の付近に運転キャビン４の横側壁４ｂにキャビ
ン上下方向に沿わせて配置し、前記媒体循環路１０，１
２，３２を形成するパイプを前記両後側角のうちの他方
の後側角の付近に運転キャビン４の横側壁４ｂにキャビ
ン上下方向に沿って通るように配置してある。すなわ
ち、運転キャビン４の両横側壁４ｂ，４ｂの後端部を運
転キャビン４の左右方向での内側に入り込むように屈曲
形成することにより、一方の横側壁部４ｂの後端部の屈
曲壁部分４ｃの外面側に、キャビン上下方向に長い形状
で上端側が空調機カバー１７の内側で前記収容室１８に
連通する装置収容部３６を形成し、この装置収容部３６
に受液装置部１４を前記媒体循環路１６の接続する上端
側が前記収容室１８に入り込む状態で配置してある。そ
して、装置収容部３６の外周側を覆うように横断面Ｌ字
形状に形成した収容部カバー３７によって受液装置部１
４の外周側を覆ってある。前記両横側壁４ｂ，４ｂのう
ちの他方の横側壁部４ｂの後端部の前記屈曲壁部分４ｃ
の外面側に、キャビン上下方向に長い形状で上端側が空
調機カバー１７の内側で前記収容室１８に連通し、下端
側がキャビン下方向きに開口するパイプ収容部３８を形
成し、このパイプ収容部３８に、媒体循環路１０，１
２，３２を形成するパイプを、パイプ収容部３８を上下
に挿通するようにして配置してある。凝縮装置部１１や
蒸発装置部１３などを制御するための電気コード３９
や、キャビン天板４ａの上に入り込んだ雨水などの水を
キャビン天板４ａの後端側から排出するドレンホース４
０も前記パイプ収容部３８にこれを上下に挿通するよう
にして配置してある。そして、パイプ収容部３８の外周
側を覆うように横断面Ｌ字形状に形成した収容部カバー
４１によって媒体循環路１０，１２，３２、電気コード
３９、ドレンホース４０の外周側を覆ってある。As shown in FIGS. 5 and 9, the liquid receiving unit 14 is mounted on the lateral side wall 4b of the operating cabin 4 near one of the left and right rear corners of the operating cabin 4. And the medium circulation paths 10, 1
The pipes forming the pipes 2 and 32 are arranged in the vicinity of the other rear corner of the two rear corners on the side wall 4b of the driving cabin 4 so as to pass along the vertical direction of the cabin. That is, the rear end portions of both lateral side walls 4b, 4b of the driving cabin 4 are bent so as to enter inside the driving cabin 4 in the left-right direction, so that the bent wall portion of the rear end portion of one of the side wall portions 4b is formed. On the outer surface side of the housing 4c, a device housing portion 36 which is long in the cabin vertical direction and whose upper end communicates with the housing room 18 inside the air conditioner cover 17 is formed.
The liquid receiving device section 14 is disposed such that the upper end side of the medium circulation path 16 connected to the storage chamber 18 enters the storage chamber 18. Then, the liquid receiving device section 1 is formed by a housing section cover 37 formed in an L-shaped cross section so as to cover the outer peripheral side of the apparatus housing section 36.
4 is covered. The bent wall portion 4c at the rear end of the other one of the two side walls 4b, 4b
On the outer surface side, a pipe housing portion 38 having a shape that is long in the vertical direction of the cabin and whose upper end communicates with the housing chamber 18 inside the air conditioner cover 17 and whose lower end opens downward in the cabin, is formed. In addition, the medium circulation paths 10 and 1
The pipes forming the pipes 2 and 32 are arranged so that the pipe accommodating section 38 is inserted vertically. Electric cord 39 for controlling the condensing unit 11 and the evaporating unit 13
And a drain hose 4 for discharging water such as rainwater that has entered the cabin top plate 4a from the rear end side of the cabin top plate 4a.
Reference numeral 0 is also arranged so as to be inserted vertically into the pipe housing 38. The outer peripheral sides of the medium circulation paths 10, 12, 32, the electric cord 39, and the drain hose 40 are covered by an accommodating section cover 41 formed in an L-shaped cross section so as to cover the outer peripheral side of the pipe accommodating section 38.

【００３０】図３および図９に示すように、運転キャビ
ン４の後側壁４ｄを、前記左右横側壁４ｂの屈曲壁部分
４ｃどうしの間に位置する透明板で作成するとともに、
後側壁４ｄの上端側に位置するキャビン横方向の軸芯Ｘ
まわりで揺動操作することにより、遊端側が運転キャビ
ン４から外側に上昇して突出する開き姿勢と、遊端側が
両横側壁４ｂ，４ｂの屈曲壁部分４ｃどうしの間に下降
して入り込む閉じ姿勢とに開閉できるように取り付けて
ある。後側壁４ｄの閉じ姿勢は、図３に示す傾斜姿勢に
設定してある。すなわち、上端側が前記吸気口２０より
もキャビン前方側に位置し、下端側ほど上端側よりもキ
ャビン後方側に位置する傾斜姿勢に設定してある。これ
により、閉じた場合の後側壁は４ｄは、上端側において
は外面側に空気が吸気口２０に流入するスペースを形成
し、下端側においては極力キャビン前後方向に長いキャ
ビン内スペースを形成する。As shown in FIGS. 3 and 9, the rear side wall 4d of the driving cabin 4 is made of a transparent plate located between the bent wall portions 4c of the left and right lateral side walls 4b.
Axle X in the lateral direction of the cabin located on the upper end side of rear wall 4d
By swinging around, the free end side rises outward from the driving cabin 4 and protrudes outward, and the free end side closes down between the bent wall portions 4c of the two side walls 4b, 4b. It is attached so that it can be opened and closed with the posture. The closing posture of the rear side wall 4d is set to the inclined posture shown in FIG. That is, the inclined position is set such that the upper end side is located on the front side of the cabin with respect to the intake port 20, and the lower end side is located on the rear side of the cabin with respect to the upper end side. Thus, the rear wall 4d when closed, forms a space for air to flow into the intake port 20 on the outer surface on the upper end side, and forms a cabin space as long as possible in the front-rear direction of the cabin on the lower end side.

【００３１】図６に示すホース４２は、蒸発装置部１３
から排出される除湿水などキャビン天板４ａの上にでき
る水をキャビン天板４ａの前端側から排出するドレンホ
ースであり、図１に破線で示す如く運転キャビン４の乗
降口の前側にキャビン上下方向に沿って位置するキャビ
ンフレームの内部に配置してある。The hose 42 shown in FIG.
Is a drain hose that discharges water formed on the cabin top plate 4a such as dehumidified water discharged from the front end side of the cabin top plate 4a, as shown by a broken line in FIG. It is located inside the cabin frame located along the direction.

【図面の簡単な説明】[Brief description of the drawings]

【図１】コンバイン全体の側面図FIG. 1 is a side view of the entire combine.

【図２】空調装置の概略図FIG. 2 is a schematic diagram of an air conditioner.

【図３】凝縮装置部および蒸発装置部の配設部の断面図FIG. 3 is a sectional view of an arrangement portion of a condensing unit and an evaporating unit.

【図４】凝縮装置部および蒸発装置部の配設部の斜視図FIG. 4 is a perspective view of an arrangement portion of a condensing unit and an evaporating unit.

【図５】受液装置部の配設部の断面図FIG. 5 is a sectional view of an arrangement portion of the liquid receiving device section.

【図６】キャビン天板と空調機カバーの断面図FIG. 6 is a sectional view of a cabin top plate and an air conditioner cover.

【図７】外気フィルターと内気フィルターの配設部の断
面図FIG. 7 is a sectional view of a portion where an outside air filter and an inside air filter are provided.

【図８】外気フィルターの斜視図FIG. 8 is a perspective view of an outside air filter.

【図９】運転キャビンの後面図FIG. 9 is a rear view of the driving cabin.

【符号の説明】[Explanation of symbols]

３ 原動部 ４ 運転キャビン ４ａ 天板 ９ 圧縮装置部 １０ 媒体循環路 １１ 凝縮装置部 １２ 媒体循環路 １３ 蒸発装置部 １４ 受液装置部 １６ 媒体循環路 １７ 空調機カバー １８ 収容室 ３６ 受液装置部の収容部 REFERENCE SIGNS LIST 3 driving unit 4 operating cabin 4 a top plate 9 compression unit 10 medium circulation path 11 condensing unit 12 medium circulation path 13 evaporating unit 14 liquid receiving unit 16 medium circulation line 17 air conditioner cover 18 storage chamber 36 liquid receiving unit Accommodation section

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 運転キャビン空調のための凝縮装置部と
蒸発装置部とを、運転キャビンの天板とこの天板上の空
調機カバーとが形成する収容室に設けてある作業車の空
調装置であって、 前記凝縮装置部と前記蒸発装置部とを接続する媒体循環
路が有する受液装置部を前記収容室以外の収容部に配置
してある作業車の空調装置。An air conditioner for a working vehicle, wherein a condenser unit and an evaporator unit for operating cabin air conditioning are provided in a storage room formed by a top plate of the operating cabin and an air conditioner cover on the top plate. An air conditioner for a work vehicle, wherein a liquid receiving unit provided in a medium circulation path that connects the condenser unit and the evaporator unit is disposed in a storage unit other than the storage chamber. 【請求項２】 前記受液装置部の上端部が前記収容室に
入り込む状態で受液装置部を前記収容部に収容してある
請求項１記載の作業車の空調装置。2. The air conditioner for a work vehicle according to claim 1, wherein the liquid receiving device is accommodated in the accommodation portion with the upper end of the liquid receiving device entering the accommodation room. 【請求項３】 前記収容部を、前記運転キャビンの後側
角付近に前記受液装置部をキャビン側壁に沿わせて収容
するように形成してある請求項１又は２記載の作業車の
空調装置。3. The air conditioning system for a work vehicle according to claim 1, wherein the housing portion is formed near the rear corner of the driving cabin so as to house the liquid receiving unit along a cabin side wall. apparatus. 【請求項４】 圧縮装置部を原動部に設けるとともに、
前記凝縮装置部および前記蒸発装置部を前記圧縮装置部
に接続する媒体循環路を、前記運転キャビンの左右の後
側角付近のうちの前記受液装置部用収容部が位置する側
とは反対側の後側角付近にキャビン側壁に沿って通る状
態に配置してある請求項３記載の作業車の空調装置。4. A compressor unit is provided in a driving unit,
A medium circulation path connecting the condenser unit and the evaporator unit to the compressor unit is opposite to a side of the left and right rear corners of the operation cabin where the receiving unit for the liquid receiving unit is located. The air conditioner for a working vehicle according to claim 3, wherein the air conditioner is arranged near the rear corner of the vehicle so as to pass along the cabin side wall.