M332739 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種壓縮機容量調節結構，尤指一種適 用於螺旋式壓縮機之容積調節結構。 5 【先前技術】 螺方疋式壓縮機現今已被廣泛運用於空調、製冷系統 中，其主要是藉由一對公母轉子間的密封空間於運轉過程 中逐漸縮小而達到壓縮的效果。在現今螺旋壓縮機中還具 10有一容積調節裝置，藉由此裝置可改變機器的製冷能力。 參考圖1與圖2，其分別繪示習知螺旋壓縮機容積調節 結構立體圖及其剖視圖，其中圖2已省略公母轉子對。習知 容積可調之螺旋壓縮機主要於一殼體丨内、轉子室2上方挖 設一滑閥室3,並有一滑閥4位於上述滑閥室3中，其中滑閥 15至3疋開口於设體1之排出端表面5，此表面在滑閥室3開口 附近是平坦的面。藉由滑閥4之滑移，實際由公母轉子對6、 殼體1、以及滑閥4包圍之氣體壓縮空間便相應改變。如圖2 中所示，當滑閥4朝殼體丨外滑移至如虛線所表示之位置 時，壓縮機有最大容積，此時氣體壓縮空間最大；當滑閥4 2〇位於如貫線所表示之位置時，壓縮機之容積最小。 習知壓縮機之容積調節結構有一潛在問題，亦即當滑 閥由滑閥室向殼體外滑移，即圖中由虛線變為實線。在此 位置，由於滑閥與公母轉子對之間的壓力差及壓力變動， 使得滑闊受朝向公母轉子對之徑向力，同時因滑閱受殼體 5 .M332739 之滑閥室壁支撐的部位轡輛 的表面容易磨損，嚴重者造成：成滑閥室與滑閥互相接觸 摩擦，因此在機器運轉時不間與公母轉子對之間互相 動、不穩定及不正常的轉二不可避免的震動會導致峨 【新型内容】 括=作提t — 種螺㈣縮機容積調節結構的改良，包 二子對、—滑閥、及-延伸支撑架。上 述殼體於内部設有一韓子它 ^ 滑閥室均開口於殼體之—二d闕室’其中轉子室與 由-上半緣與二下半狐緣面。滑閥室之開口輪廊 上述公母轉子對與滑閥是分別設於 15 20 2 =㈣是可滑移者1伸支撐架是^在殼體之排出 —上’且延伸支撑架之内輪磨對應齊平於二下半弧緣。 藉由本創作之結構設計’當滑閥—部份滑移至殼體外 在m2延伸支_之於：下半弧緣處輔助支擇，使滑閥 在喊體中能較為穩固、減少晃動程度。 ,上述延伸支樓架可包括二弧形段、及_中間段，且二 弧形段與中間段所共同構成之内輪廓與滑閥室之開口輪廓 相同。延伸支樓架可以是與殼體分離之部件、並透過一鎖 :件而固疋於殼體之排出端表面，其中鎖附件例如為一螺 栓；也可以是與殼體一體成形製造出。 、 上述殼體之排出端表面可設有一内螺孔，且延伸支撐 架對應地設有-通孔，鎖附件穿過通孔而螺合於内螺孔中。 6 M332739 【實施方式】 參考圖3，其為本創作一較佳實施例之螺旋壓縮機容 積調節結構立體圖。圖所示為使用了本創作之容積調節結 5構之螺旋壓縮機，其主要包括有殼體丨丨、組裝於殼體u内 • 之公母轉子對21與滑閥3丨、以及固設在殼體11之排出端表 . 面14上之延伸支撐架32，延伸支撐架32恰包住滑閥31外圓 之輪廓。 • 參考圖4，其為螺旋壓縮機容積調節結構分解圖。上 10述殼體11内部挖設有相連通之一轉子室12及一滑閥室13， 且轉子室12與滑閥室13均開口於殼體丨丨之排出端表面14。 滑閥室13之開口輪廓是由一上半緣131及自其兩端接續延 伸之二下半弧緣132、133所構成，上半緣131係指一半圓輪 廓。滑閥室13之開口輪廓是配合於滑閥之外輪廓，因一般 15 滑閥即為此種結構外型。 公母轉子對21是容置在殼體11内之轉子室12中，滑閥 鲁 31則是滑設在殼體丨丨内之滑閥室丨3。在螺旋壓縮機運作 時’公母轉子對21、殼體11、以及滑閥3丨會共同包圍形成 一壓縮空間，也就是被施予體積減小變化以提高壓力之待 -20壓縮氣體所佔據之空間。 延伸支撐架32是固定在殼體11之排出端表面14上，其 包括有二弧形段322、323、及一中間段32卜二弧形段322、 323與中間段32丨之内輪廓是分別對應齊平於前述滑閥室13 開口輪廓之二下半弧緣132、133與上半緣13卜亦即延伸支 7 :M332739 撐架32之内輪廓與滑閥室13之開口輪廓相同。本實施例中 二弧形段322、323、及中間段321是以單件製造者。 殼體11之排出端表面14開設有複數内螺孔43，且延伸 支撐架32對應貫設有複數通孔42。透過對應數目之鎖附件 5 41(圖中僅不出一個）穿過通孔42並螺合於内螺孔衫中，延 • 伸支撐架32因此被固定在殼體11之排出端表面14。本實施 例中鎖附件41為螺栓。 同時參考圖4與圖5，其中圖5繪示出螺旋壓縮機剖視 瞻 =，且已將公母轉子對省略。以下將說明本創作之容積調 10節結構之特色。當連接於滑閥31之活塞構件（圖未示）朝右 方移動，使滑閥3 1貫質佔據滑閥室丨3之大部分空間時，壓 縮機有最大壓縮容積，如圖中虛線部分所示。此時滑閥3 i 是由殼體11之滑閥室13壁面所支撐。 當使用者調整壓縮容積至最小，亦即將活塞構件朝左 15方移動，使滑閥3 1大部分自滑閥室13脫離而至殼體11外 部。此時滑閥31—小部份是由殼體丨丨之滑閥室13壁面所支 泰撐，而路出於殼體丨丨外之較大部分便可由延伸支撐架32之 一下半弧緣322、323來辅助支撐，因此大幅改善滑閥31之 震動情形。而且延伸支撐架32之中間段321也在壓縮機運轉 .20時，發揮頂住向上晃動之滑闊31之作用，更有效降低了滑 閥31晃動變大的趨勢。 。力由上述可知’本創作藉由設置在排出端表面之延伸支 樓架’使得滑閥為縮小壓縮容積而移動後能獲得適當之支 樓，避免如習知因滑閥呈懸臂狀態而震動。 8 .M332739 上述實施例僅係為了方便說明而舉例而已，本創作所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 又 5【圖式簡單說明】 圖1係習知螺旋壓縮機容積調節結構立體圖。 圖2係圖1剖視圖。 圖3係本創作一較佳實施例之螺旋壓縮機容積 體圖。 、郎結構立 10 圖4係圖3分解圖。 圖5係圖3剖視圖。 【主要元件符號說明】 殼體1 轉子室2 滑閥室3 滑閥4 排出端表面5 公母轉子對6 殼體11 轉子室12 滑閥室13 上半緣131 下半弧緣132，133 排出端表面14 公母轉子對21 滑閥3 1 延伸支撐架32 中間段321 弧形段322,323 鎖附件41 通孔42 内螺孔43 9 15M332739 VIII. New description: [New technical field] This creation is about a compressor capacity adjustment structure, especially a volume adjustment structure suitable for a screw compressor. 5 [Prior Art] The screw-type jaw compressor has been widely used in air conditioning and refrigeration systems. It is mainly achieved by the narrowing of the sealing space between the male and female rotors during operation to achieve compression. In today's screw compressors there is also a volumetric adjustment device whereby the device can change the refrigeration capacity of the machine. Referring to Figures 1 and 2, there are shown perspective views of a conventional screw compressor volume adjustment structure and a cross-sectional view thereof, wherein the male and female rotor pairs have been omitted from Figure 2 . A conventionally adjustable screw compressor mainly has a spool valve chamber 3 disposed in a casing bore and above the rotor chamber 2, and a spool valve 4 is located in the spool valve chamber 3, wherein the spool valves 15 to 3 open On the discharge end surface 5 of the body 1, this surface is a flat surface near the opening of the spool chamber 3. By the slip of the spool 4, the gas compression space actually surrounded by the male and female rotor pairs 6, the housing 1, and the spool 4 is correspondingly changed. As shown in Fig. 2, when the spool 4 slides outwardly toward the housing to the position indicated by the broken line, the compressor has the largest volume, at which time the gas compression space is the largest; when the spool 4 2 is located at the line The volume of the compressor is the smallest when indicated. The volume adjustment structure of the conventional compressor has a potential problem in that when the spool is slid out of the housing by the spool chamber, it is changed from a broken line to a solid line in the figure. In this position, due to the pressure difference and pressure variation between the spool and the male and female rotor pairs, the sliding force is subjected to the radial force toward the male and female rotor pairs, and at the same time, due to the sliding of the sliding valve chamber wall of the housing 5. M332739 The surface of the support is easy to wear on the surface of the vehicle. In severe cases, the sliding valve chamber and the sliding valve are in contact with each other. Therefore, when the machine is running, it does not move with the male and female rotors, and it is unstable and abnormal. The inevitable vibration will lead to the improvement of the volume adjustment structure of the snail (four) reduction machine, the two pairs, the slide valve, and the extension support frame. The housing is internally provided with a Hanzi. The sliding valve chamber is open to the housing - the two d-chambers, wherein the rotor chamber is covered by the upper half and the second lower half. The open turret of the spool valve chamber is provided on the male and female rotor pairs and the slide valve respectively at 15 20 2 = (4) is slidable 1 the support frame is ^ on the discharge of the casing - and the inner wheel of the extended support frame Corresponding to the flushing of the second half of the arc. By the design of the creation of the design, when the slide valve is partially slipped to the outside of the casing, the m2 extension branch is provided at the lower half of the arc edge to make the slide valve more stable and reduce the degree of sway in the shouting body. The extension support frame may include two arc segments and an intermediate portion, and the inner contour formed by the two arc segments and the middle portion is the same as the opening contour of the spool chamber. The extension support frame may be a separate component from the housing and fixed to the discharge end surface of the housing through a lock member, wherein the lock attachment is, for example, a bolt; or may be integrally formed with the housing. The discharge end surface of the casing may be provided with an inner screw hole, and the extension support frame is correspondingly provided with a through hole, and the lock attachment is screwed into the inner screw hole through the through hole. 6 M332739 [Embodiment] Referring to Fig. 3, there is shown a perspective view of a volumetric adjustment structure of a screw compressor according to a preferred embodiment of the present invention. The figure shows a screw compressor using the volume adjustment junction of the present invention, which mainly comprises a casing 丨丨, a male and female rotor pair 21 and a spool valve 3 assembled in the casing u, and a fixing Extending the support frame 32 on the face 14 of the discharge end of the housing 11, the extension support frame 32 encloses the contour of the outer circumference of the slide valve 31. • Refer to Figure 4 for an exploded view of the volumetric adjustment structure of the screw compressor. A rotor chamber 12 and a spool chamber 13 are connected to each other in the casing 11 and the rotor chamber 12 and the spool chamber 13 are both open to the discharge end surface 14 of the casing. The opening profile of the spool chamber 13 is formed by an upper half edge 131 and two lower half arc edges 132, 133 extending from both ends thereof. The upper half edge 131 is a semicircular profile. The opening profile of the spool valve chamber 13 is fitted to the outer contour of the spool valve, since the general 15 spool valve is such a structural shape. The male and female rotor pairs 21 are housed in the rotor chamber 12 in the housing 11, and the spool 31 is a spool chamber 3 that is slidably disposed within the housing bore. When the screw compressor is in operation, the male and female rotor pairs 21, the housing 11, and the spool 3 共同 will jointly form a compression space, that is, the volume reduction change is applied to increase the pressure to be occupied by the compressed gas. Space. The extension support frame 32 is fixed to the discharge end surface 14 of the casing 11, and includes a second arcuate section 322, 323, and an intermediate section 32. The inner contour of the second arcuate section 322, 323 and the intermediate section 32 is The inner contours of the second lower half edge 132, 133 and the upper half edge 13 of the opening contour of the spool valve chamber 13 respectively, that is, the extension branch 7: M332739 bracket 32 are the same as the opening contour of the spool chamber 13. In this embodiment, the two arcuate segments 322, 323, and the intermediate segment 321 are manufactured in one piece. The discharge end surface 14 of the housing 11 is provided with a plurality of internal screw holes 43, and the extension support frame 32 is correspondingly provided with a plurality of through holes 42. A plurality of lock attachments 5 41 (only one of which is shown) are passed through the through holes 42 and screwed into the inner threaded shirt, and the extension support frame 32 is thus fixed to the discharge end surface 14 of the housing 11. In the present embodiment, the lock attachment 41 is a bolt. Referring to Figures 4 and 5 together, Figure 5 depicts a cross-sectional view of the screw compressor and the male and female rotor pairs have been omitted. The characteristics of the volume adjustment structure of this creation will be described below. When the piston member (not shown) connected to the spool 31 is moved to the right, so that the spool 3 1 occupies most of the space of the spool chamber 3, the compressor has the maximum compression volume, as shown by the broken line in the figure. Shown. At this time, the spool 3 i is supported by the wall surface of the spool chamber 13 of the housing 11. When the user adjusts the compression volume to a minimum, that is, the piston member is moved to the left by 15 degrees, most of the spool 31 is disengaged from the spool chamber 13 to the outside of the housing 11. At this time, the sliding valve 31 is a small part supported by the wall surface of the sliding valve chamber 13 of the casing, and the larger part of the outer casing is provided by the lower half of the extending support frame 32. 322, 323 are used to assist the support, thus greatly improving the vibration of the spool 31. Further, the intermediate portion 321 of the extension support frame 32 also functions to withstand the swaying 31 of the upward sway when the compressor is operated at .20, and the tendency of the sway of the spool 31 to become large is more effectively reduced. . From the above, it can be seen that the present invention can obtain a suitable branch by moving the slide valve to reduce the compression volume by the extension of the support frame provided on the surface of the discharge end, thereby avoiding the vibration of the slide valve in a cantilever state as is conventional. 8. The above embodiments are merely examples for convenience of description, and the scope of the claims is intended to be based on the scope of the patent application, and is not limited to the above embodiments. 5 [Simplified description of the drawings] Fig. 1 is a perspective view of a conventional volumetric adjustment structure of a screw compressor. Figure 2 is a cross-sectional view of Figure 1. Figure 3 is a perspective view of a volumetric compressor of a preferred embodiment of the present invention.郎结构立 10 Figure 4 is an exploded view of Figure 3. Figure 5 is a cross-sectional view of Figure 3. [Main component symbol description] Housing 1 Rotor chamber 2 Spool valve chamber 3 Spool valve 4 Discharge end surface 5 Male and female rotor pair 6 Housing 11 Rotor chamber 12 Spool valve chamber 13 Upper half edge 131 Lower half arc edge 132, 133 Discharge End surface 14 male and female rotor pair 21 spool valve 3 1 extension support frame 32 intermediate section 321 curved section 322, 323 lock attachment 41 through hole 42 inner screw hole 43 9 15