TW202415855A - Cooling mechanism of cylinder capable of reducing the flow velocity difference between a first ring water channel and a second ring water channel - Google Patents

Abstract

The invention relates to a cooling mechanism of a cylinder. The cylinder has a cylinder body and a cylinder head assembled on the cylinder body; the cylinder head has a water jacket for the cooling water to flow through; the cylinder head has a cooling water outlet and a cooling water inlet disposed on the opposite sides to face each other and communicating with the exterior; the water jacket has an inlet channel connected to the cooling water inlet, and an outlet converging channel connected to the cooling water outlet; the water inlet channel is connected to a first ring water channel and a second ring water channel; the other sides of the first ring water channel and the second ring water channel are connected to the outlet converging channel; in this way, the flow velocity difference between the first ring water channel and the second ring water channel can be reduced, thereby improving the uniform cooling and heat dissipation effect of the cylinder head.

Description

汽缸的冷卻機構 Cylinder cooling mechanism

本發明係有關一種汽缸的冷卻機構，尤指一種可提升汽缸頭整體冷卻散熱均勻效果之汽缸的冷卻機構。 The present invention relates to a cylinder cooling mechanism, in particular to a cylinder cooling mechanism that can improve the overall cooling and heat dissipation uniformity of the cylinder head.

如圖1所示，水冷式內燃機引擎為讓引擎的汽缸部具有良好的散熱效果；於汽缸部的汽缸頭內設有供冷卻水流通的水路，供冷卻水流通的水路稱為水套1；該水套1具有入水口部11與出水口部12，位於該入水口部11與該出水口部12之間的第一流通道13與第二流通道14；該入水口部11位於引擎的排氣側，該出水口部12位於引擎的進氣側，該入水口部11外側接水泵(圖式中未繪出)，該出水口部12外側接冷卻水回流管(圖式中未繪出)；該入水口部11與該出水口部12係被設計成位於該水套1的同一側(如圖式中的右側)，因此當冷卻水水泵加壓輸入該入水口部11，冷卻水於該水套1內沿該第一流通道13與該第二流通道14(圖式中黑粗線箭頭為冷卻水流動方向)朝該出水口部12流出進入冷卻水回流管回收冷卻散熱；由於該第一流通道13與該第二流通道14流道長度與形狀不同，因此會造成該第一流通道13與該第二流通道14內冷卻水的流速會產生差異；更明確說，於該第一流通道13內的冷卻水流速會大於該第二流通道14內的冷卻水流速，因此位於該第一流通道13側冷卻效果會優於位於第二流通道14側冷卻效果，所以會造成整 體汽缸頭部分冷卻效果不均；此種冷卻效果不均的差異嚴重時會造成引擎整體效能弱化。 As shown in FIG1 , a water-cooled internal combustion engine is provided in a cylinder head of the cylinder part of the engine to provide a good heat dissipation effect. A water channel for cooling water to flow is provided in the cylinder head of the cylinder part. The water channel for cooling water to flow is called a water jacket 1. The water jacket 1 has a water inlet 11 and a water outlet 12, and a first flow channel 13 and a second flow channel 14 located between the water inlet 11 and the water outlet 12. 11 is located on the exhaust side of the engine, the water outlet 12 is located on the intake side of the engine, the water inlet 11 is connected to a water pump (not shown in the figure) on the outside, and the water outlet 12 is connected to a cooling water return pipe (not shown in the figure) on the outside; the water inlet 11 and the water outlet 12 are designed to be located on the same side of the water jacket 1 (such as the right side in the figure), so when the cooling water pump is pressurized and input into the water inlet 11, the cooling water flows in the water jacket 1 along the first flow channel 13 and the second flow channel 14 (the black thick arrow in the figure is the cooling water flow direction) toward the water outlet 12 and enters the cooling water return pipe to recover cooling heat; since the first flow channel 13 and the second flow channel 14 have different flow channel lengths and shapes, the cooling water in the first flow channel 13 and the second flow channel 14 will be different. The flow rate will produce differences; more specifically, the cooling water flow rate in the first flow channel 13 will be greater than the cooling water flow rate in the second flow channel 14, so the cooling effect on the first flow channel 13 side will be better than the cooling effect on the second flow channel 14 side, so it will cause uneven cooling effect of the entire cylinder head; if this difference in cooling effect is serious, it will cause the overall performance of the engine to weaken.

因此，提供一種汽缸的冷卻機構，來提升水冷式內燃機引擎汽缸頭的整體冷卻均勻化效果，已為車輛業者亟待克服之課題。 Therefore, providing a cylinder cooling mechanism to improve the overall cooling uniformity of the cylinder head of a water-cooled internal combustion engine has become an urgent issue for vehicle manufacturers to overcome.

本發明主要目的在於提供一種汽缸的冷卻機構，藉此能克服習用汽缸頭整體冷卻散熱均勻化不足之缺失。 The main purpose of the present invention is to provide a cylinder cooling mechanism, thereby overcoming the defect of insufficient uniform heat dissipation of the conventional cylinder head overall cooling.

為此，本發明乃在提供一種汽缸的冷卻機構，汽缸具有汽缸本體與組設於該汽缸本體上的汽缸頭，該汽缸頭內具有可供冷卻水流通用的水套；該汽缸頭具有相反側對向設置連通外部的冷卻水出口與冷卻水入口；該水套具有連通冷卻水入口的入水引道，連接該冷卻水出口的出水匯流道；該入水引道連接有第一環水道與第二環水道；該第一環水道與該第二環水道另一側連接該出水匯流道。 To this end, the present invention provides a cylinder cooling mechanism, wherein the cylinder has a cylinder body and a cylinder head assembled on the cylinder body, wherein the cylinder head has a water jacket for cooling water flow; the cylinder head has a cooling water outlet and a cooling water inlet arranged on opposite sides and connected to the outside; the water jacket has a water inlet channel connected to the cooling water inlet, and a water outlet confluence channel connected to the cooling water outlet; the water inlet channel is connected to a first annular water channel and a second annular water channel; the first annular water channel and the second annular water channel are connected to the water outlet confluence channel on the other side.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該出水匯流道具有匯流口，該匯流口係偏向該第二環水道開設。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the water outlet confluence channel has a confluence port, and the confluence port is opened toward the second annular water channel.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該水套的該入水引道具有入水引道中心線，該出水匯流道具有出水匯流道中心線；該水套於該入水引道的中心點與該出水匯流道的中心點形成一中直線；該汽缸頭內於進氣道側具有進氣閥口，於排氣道側具有排氣閥口，該水套具有將該進氣閥口與該排氣閥口隔開的平直線；該第二環水道 側朝缸孔中心凹設有核心水道區。 To this end, in some embodiments of the present invention, a cooling mechanism for a cylinder is provided, wherein the water inlet channel of the water jacket has a water inlet channel centerline, and the water outlet confluence channel has a water outlet confluence channel centerline; the water jacket forms a central straight line at the center point of the water inlet channel and the center point of the water outlet confluence channel; the cylinder head has an intake valve on the intake channel side and an exhaust valve on the exhaust channel side, and the water jacket has a straight line separating the intake valve and the exhaust valve; the second annular water channel is provided with a core water channel area toward the center concave of the cylinder hole.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該水套的該第二環水道包括第二前段環水道及第二後段環水道；該第二前段環水道及該第二後段環水道連通該核心水道區；該核心水道區具有進水端、出水端及核心腔室；該第二後段環水道包括有接收段與中間段；其中，該中間段的水路通道的截面積係小於該接收段的水路通道的截面積。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the second annular water channel of the water jacket includes a second front annular water channel and a second rear annular water channel; the second front annular water channel and the second rear annular water channel are connected to the core water channel area; the core water channel area has a water inlet end, a water outlet end and a core chamber; the second rear annular water channel includes a receiving section and a middle section; wherein the cross-sectional area of the water channel of the middle section is smaller than the cross-sectional area of the water channel of the receiving section.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該水套的該第二環水道包括第二前段環水道及第二後段環水道；該第二前段環水道及該第二後段環水道連通該核心水道區；該核心水道區具有進水端、出水端及核心腔室；該進水端截面積於大該出水端的截面積。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the second annular water channel of the water jacket includes a second front annular water channel and a second rear annular water channel; the second front annular water channel and the second rear annular water channel are connected to the core water channel area; the core water channel area has a water inlet end, a water outlet end and a core chamber; the cross-sectional area of the water inlet end is larger than the cross-sectional area of the water outlet end.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該入水引道的該入水引道中心線朝第一環水道的冷卻水水流方向的延伸線與該中直線所形成的夾角小於，該出水匯流道中心線朝第二環水道的冷卻水水流來向的延伸線與該中直線所形成的夾角。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the angle formed by the extension line of the water inlet channel center line toward the cooling water flow direction of the first annular water channel and the middle straight line is smaller than the angle formed by the extension line of the water outlet confluence channel center line toward the cooling water flow direction of the second annular water channel and the middle straight line.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該水套更具有冷卻水流入孔與冷卻水回流孔；該水套的該冷卻水流入孔與該冷卻水回流孔截面積，以該中直線來界分其大部分係位於該水套的該第二環水道內。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the water jacket further has a cooling water inlet hole and a cooling water return hole; the cross-sectional area of the cooling water inlet hole and the cooling water return hole of the water jacket, divided by the median straight line, is mostly located in the second annular water channel of the water jacket.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該第一環水道包括有連通該入水引道的第一前段環水道，以及連通該出水匯流道的第一後段環水道；該第二環水道包括有連通該入水引道的第二前段環水道，以及連通該出水匯流道的第二後段環水道；其中，該第二 前段環水道與該第二後段環水道是經由大致朝該核心水道區相連通；該水套以該平直線為界，位於該排氣閥口側的該第一環水道的第一前段環水道長度大於該第二環水道的該第二前段環水道的長度。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the first annular water channel includes a first front annular water channel connected to the water inlet channel and a first rear annular water channel connected to the water outlet confluence channel; the second annular water channel includes a second front annular water channel connected to the water inlet channel and a second rear annular water channel connected to the water outlet confluence channel; wherein the second front annular water channel and the second rear annular water channel are connected through a direction generally toward the core water channel area; the water jacket is bounded by the straight line, and the length of the first front annular water channel of the first annular water channel located on the exhaust valve port side is greater than the length of the second front annular water channel of the second annular water channel.

為此，本發明的一些實施例中，乃在提供一種汽缸的冷卻機構，該水套於該第一環水道朝該汽缸頭的缸孔中心延設有水路較淺的淺水道區；該第二環水道側朝缸孔中心凹設有核心水道區；該核心水道區與該淺水道區之間安裝有點火器，由該汽缸頭的缸孔軸向觀視，該點火器的電極段伸入該核心水道區的更下方，以及該淺水道區伸入該點火器的插頭段的更下方。 To this end, some embodiments of the present invention provide a cylinder cooling mechanism, wherein the water jacket has a shallow water channel area with a shallower water path extending from the first annular water channel toward the center of the cylinder bore of the cylinder head; the second annular water channel has a core water channel area toward the center of the cylinder bore; an igniter is installed between the core water channel area and the shallow water channel area, and when viewed from the axial direction of the cylinder bore of the cylinder head, the electrode section of the igniter extends further below the core water channel area, and the shallow water channel area extends further below the plug section of the igniter.

本發明一些實施例中所能達成之功效在於：藉此可縮小該第一環水道與該第二環水道的流速差，進而可提升該汽缸頭冷卻散熱均勻效果。 The effect that can be achieved in some embodiments of the present invention is that: the flow rate difference between the first annular water channel and the second annular water channel can be reduced, thereby improving the uniformity of the cylinder head cooling and heat dissipation effect.

本發明一些實施例中所能達成之功效在於：藉此可提升該第二環水道冷卻水整體的流速，從而可縮小該第一環水道與該第二環水道的流速差，進而可提升該汽缸頭冷卻散熱均勻效果。 The effect that can be achieved in some embodiments of the present invention is that: the overall flow rate of the cooling water in the second annular water channel can be increased, thereby reducing the flow rate difference between the first annular water channel and the second annular water channel, and further improving the uniformity of the cylinder head cooling and heat dissipation effect.

本發明一些實施例中所能達成之功效在於：藉此可避免該汽缸頭安裝該點火器附近的該核心水道區蓄熱，從而可提升該汽缸頭整體的散熱均化效果。 The effect that can be achieved in some embodiments of the present invention is that: heat accumulation in the core water channel area near the cylinder head where the igniter is installed can be avoided, thereby improving the overall heat dissipation and equalization effect of the cylinder head.

本發明一些實施例中所能達成之功效在於：藉此可使該中間段的冷卻水可加速的流向該接收段，進而可避免該核心水道區蓄熱，從而可提升該汽缸頭整體的散熱均化效果。 The effect that can be achieved in some embodiments of the present invention is that the cooling water in the middle section can flow to the receiving section at an accelerated speed, thereby avoiding heat accumulation in the core water channel area, thereby improving the overall heat dissipation and equalization effect of the cylinder head.

本發明一些實施例中所能達成之功效在於：藉此可使該汽缸頭的排氣側獲得較多的冷卻水接觸面積，從而可提升該汽缸頭的排氣側的冷卻散熱效果。 The effect that can be achieved in some embodiments of the present invention is that: the exhaust side of the cylinder head can obtain a larger cooling water contact area, thereby improving the cooling and heat dissipation effect of the exhaust side of the cylinder head.

本發明一些實施例中所能達成之功效在於：藉此可對該第一環水道冷卻水流速受到控制，同時可提升該第二環水道冷卻水的流速，從而可縮小該第一環水道與該第二環水道的流速差，進而可提升該汽缸頭冷卻散熱均勻效果。 The effect that can be achieved in some embodiments of the present invention is that: the flow rate of the cooling water in the first water channel can be controlled, and the flow rate of the cooling water in the second water channel can be increased, thereby reducing the flow rate difference between the first water channel and the second water channel, and further improving the uniformity of the cylinder head cooling and heat dissipation effect.

本發明一些實施例中所能達成之功效在於：藉此可使該第一環水道可以快速且能大量的將該汽缸頭的排氣閥口側熱源，進而可提升該汽缸頭冷卻散熱均勻效果。 The effect that can be achieved in some embodiments of the present invention is that: the first annular water channel can quickly and massively remove the heat source on the exhaust valve port side of the cylinder head, thereby improving the cooling and heat dissipation uniformity of the cylinder head.

本發明一些實施例中所能達成之功效在於：藉此可提升該汽缸頭安裝該點火器附近與該汽缸頭位於缸孔中心附近冷卻散熱效果。 The effect that can be achieved in some embodiments of the present invention is that: the cooling and heat dissipation effect of the cylinder head near the igniter and the cylinder head near the center of the cylinder hole can be improved.

1:水套 1: Water jacket

11:入水口部 11: Water inlet

12:出水口部 12: Water outlet

13:第一流通道 13: First-class channel

14:第二流通道 14: Second flow channel

2:汽缸 2: Cylinder

3:汽缸頭 3: Cylinder head

3a:汽缸頭蓋 3a: Cylinder head cover

31:進氣道 31: Air intake

311:進氣閥口 311: Intake valve

32:排氣道 32: Exhaust duct

321:排氣閥口 321: Exhaust valve

33:冷卻水出口 33: Cooling water outlet

34:冷卻水入口 34: Cooling water inlet

4:汽缸本體 4: Cylinder body

5:水泵 5: Water pump

51:冷卻水輸出部 51: Cooling water output unit

52:冷卻水輸入部 52: Cooling water input unit

6:水套 6: Water jacket

61:入水引道 61: Water access

61a:入水引道中心線 61a: Centerline of water approach

62:出水匯流道 62: Water outlet confluence channel

621:匯流口 621: Confluence

62a:出水匯流道中心線 62a: Centerline of water outlet confluence channel

63:第一環水道 63: First Ring Waterway

63a:第一前段環水道 63a: The first front section of the ring waterway

63b:第一後段環水道 63b: The first rear section of the ring waterway

631:淺水道區 631: Shallow waterway area

64:第二環水道 64: Second Ring Waterway

64a:第二前段環水道 64a: The second front section of the ring waterway

64b:第二後段環水道 64b: The second rear section of the ring waterway

64b1:接收段 64b1: receiving segment

64b2:中間段 64b2: Middle section

641:核心水道區 641: Core waterway area

6411:進水端 6411: Water inlet end

6412:出水端 6412: Water outlet

6413:核心腔室 6413: Core Chamber

65:冷卻水流入孔 65: Cooling water inflow hole

66:冷卻水回流孔 66: Cooling water return hole

7:點火器 7: Ignition

71:電極段 71:Electrode segment

72:插頭段 72: Plug section

L:中直線 L: Center line

L1:平直線 L1: Straight line

θ、θ1:夾角 θ, θ1: angle

L1:進水端的截面長度 L1: Cross-sectional length of the water inlet end

L2:出水端的截面長度 L2: Cross-sectional length of the water outlet

W1:進水端的截面寬度 W1: Cross-sectional width of the water inlet end

W2:出水端的截面寬度 W2: Cross-sectional width of the water outlet

〔圖1〕係習知汽缸頭水套示意圖。 〔Figure 1〕is a schematic diagram of the cylinder head water jacket.

〔圖2〕係本發明汽缸頭與汽缸本體的立體圖。 [Figure 2] is a three-dimensional diagram of the cylinder head and cylinder body of the present invention.

〔圖3〕係本發明汽缸頭的水套仰視圖。 [Figure 3] is a bottom view of the water jacket of the cylinder head of the present invention.

〔圖4〕係本發明汽缸頭的進、排氣閥口與水套的示意圖。 [Figure 4] is a schematic diagram of the inlet and exhaust valves and water jacket of the cylinder head of the present invention.

〔圖5〕係本發明水套的中直線與平直線的示意圖。 [Figure 5] is a schematic diagram of the center straight line and the horizontal straight line of the water jacket of the present invention.

〔圖6〕係本發明水套的俯視圖。 [Figure 6] is a top view of the water jacket of the present invention.

〔圖7〕係本發明水套的核心水道區部分剖視圖。 [Figure 7] is a partial cross-sectional view of the core water channel area of the water jacket of the present invention.

〔圖8〕係本發明水套的點火器安裝後側視圖。 [Figure 8] is a rear view of the igniter installed on the water jacket of the present invention.

為使 貴審查官更容易了解本發明之結構及所能達成之功效，茲配合圖式說明如下； In order to make it easier for you, the examiner, to understand the structure of the present invention and the effects that can be achieved, the following diagrams are provided;

首先，請參閱圖2所示，本發明之汽缸的冷卻機構，係使用於水冷式內燃機的汽缸2；該汽缸2至少包括有一汽缸頭3、組設於該汽缸頭3下方的汽缸本體4。 First, please refer to FIG. 2 . The cylinder cooling mechanism of the present invention is used in a cylinder 2 of a water-cooled internal combustion engine. The cylinder 2 at least includes a cylinder head 3 and a cylinder body 4 assembled below the cylinder head 3.

如圖2所示，該汽缸頭3係組設於該汽缸本體4上方；本該汽缸頭3的二側分別設有進氣道31及排氣道32，該進氣道31朝外連接一供應引擎2燃爆用乾淨空氣的空氣供應系統(圖式中未繪出)，該空氣供應系統至少包括有節流閥體與空氣過濾器等；該排氣道32朝外連接一排放汽缸2燃爆後廢氣的排氣裝置(圖式中未繪出)，該排氣裝置至少包括有排氣管與消音管；該汽缸頭3上方蓋設有汽缸頭蓋3a；於實施時，該汽缸頭蓋3a可與該汽缸頭3以一體成型方式所構成；該汽缸頭3的外側設有輸出冷卻水用的水泵5，該水泵5可被設於該汽缸頭3內帶動機構所帶動，從而可將外部的冷卻水加壓的輸入該汽缸頭3內，設於該汽缸頭3內的帶動機構可為凸輪軸等；該水泵5具有冷卻水輸出部51與冷卻水輸入部52，該冷卻水輸入部52以管件連接冷卻水散熱器(圖式中未繪出)，藉此該水泵5運作後可經由該冷卻水輸入部52抽出冷卻水散熱器內已冷卻的水，再由該冷卻水輸出部51輸入該汽缸頭3內作冷卻的動作。 As shown in FIG. 2 , the cylinder head 3 is assembled on the top of the cylinder body 4; an intake passage 31 and an exhaust passage 32 are respectively provided on the two sides of the cylinder head 3, the intake passage 31 is externally connected to an air supply system (not shown in the figure) for supplying clean air for combustion of the engine 2, and the air supply system at least includes a throttle valve and an air filter, etc.; the exhaust passage 32 is externally connected to an exhaust device (not shown in the figure) for discharging exhaust gas after combustion of the cylinder 2, and the exhaust device at least includes an exhaust pipe and a muffler; a cylinder head cover 3a is provided on the top of the cylinder head 3; in practice, the cylinder head cover 3a can be integrally formed with the cylinder head 3 The cylinder head 3 is constructed in a manner; a water pump 5 for outputting cooling water is provided on the outer side of the cylinder head 3, and the water pump 5 can be driven by a driving mechanism provided in the cylinder head 3, so that external cooling water can be pressurized and input into the cylinder head 3, and the driving mechanism provided in the cylinder head 3 can be a camshaft, etc.; the water pump 5 has a cooling water output part 51 and a cooling water input part 52, and the cooling water input part 52 is connected to a cooling water radiator (not shown in the figure) by a pipe fitting, so that after the water pump 5 is operated, the cooled water in the cooling water radiator can be drawn out through the cooling water input part 52, and then input into the cylinder head 3 through the cooling water output part 51 for cooling.

如圖2、3所示，該汽缸頭3於該進氣道31側設置有一冷卻水出口33；該汽缸頭31於該排氣道32側設置有冷卻水入口34；該冷卻水入口34連接該水泵5的該冷卻水輸出部51，該冷卻水出口3 3外側連接管件連接冷卻水散熱器；該冷卻水入口34與該冷卻水出口33係以相反側對向方式設置，舉例而言，如圖2、3所示的來說，該冷卻水入口34係被配設於圖式的右下角，該冷卻水出口33係被配設於圖式的左上角；該汽缸頭3內設有供冷卻水流通用的水套6；該水套6具有連接該連該冷卻水入口34的入水引道61、連接該冷卻水出口33的出水匯流道62，該入水引道61與該出水匯流道62也是以相反側對向方式設置；該水套6具有接於該入水引道61與該出水匯流道62的第一環水道63與第二環水道64；該水泵5將冷卻水由該冷卻水輸入部52輸入該冷卻水入口34後，流經該入水引道61後再分經由該第一環水道63與該第二環水道64分流後，於該出水匯流道62匯流後由該冷卻水出口33流出該汽缸頭3外，圖3中的帶箭頭的黑粗線為冷卻水流通方向；該水套6於該入水引道61與該第一環水道63、該第二環水道64交界處設有可將冷卻水流入該汽缸本體4冷卻用的冷卻水流入孔65，並於該出水匯流道62與該第一環水道63、該第二環水道64交界處設有供汽缸本體4冷卻後的冷卻水回流用的冷卻水回流孔66，藉此由該水泵5所輸送的冷卻水除可冷卻該汽缸頭3外，同時也對該汽缸本體4進行冷卻動作，藉此可確保該汽缸2的運作效率與使用壽命；更須一提的是，藉由將該冷卻水流入孔65與該冷卻水回流孔66以上述方式設置，從而無須於該汽缸頭3或該汽缸本體4另外設置隔離機構，即可有效控制冷卻水流經該汽缸頭3及該汽缸本體4的規定路線。 As shown in Figs. 2 and 3, the cylinder head 3 is provided with a cooling water outlet 33 on the side of the intake passage 31; the cylinder head 31 is provided with a cooling water inlet 34 on the side of the exhaust passage 32; the cooling water inlet 34 is connected to the cooling water output portion 51 of the water pump 5, and the outer connecting pipe of the cooling water outlet 3 3 is connected to the cooling water radiator; the cooling water inlet 34 and the cooling water outlet 33 are arranged in opposite sides. For example, as shown in Figs. 2 and 3, the cooling water inlet 34 is arranged at the lower right corner of the figure, and the cooling water outlet 3 3 is arranged at the upper left corner of the figure; a water jacket 6 for cooling water flow is arranged in the cylinder head 3; the water jacket 6 has a water inlet channel 61 connected to the cooling water inlet 34 and a water outlet confluence channel 62 connected to the cooling water outlet 33, and the water inlet channel 61 and the water outlet confluence channel 62 are also arranged in opposite sides; the water jacket 6 has a first annular water channel 63 and a second annular water channel 64 connected to the water inlet channel 61 and the water outlet confluence channel 62; after the water pump 5 inputs the cooling water from the cooling water input part 52 into the cooling water inlet 34, the flow After passing through the water inlet channel 61, the water is divided into the first annular water channel 63 and the second annular water channel 64, and then flows out of the cylinder head 3 through the cooling water outlet 33 after merging at the water outlet confluence channel 62. The black thick line with an arrow in FIG. 3 is the cooling water flow direction. The water jacket 6 is provided with a cooling water inlet hole 65 at the junction of the water inlet channel 61 and the first annular water channel 63 and the second annular water channel 64 for cooling the cylinder body 4, and a cooling water outlet hole 65 is provided at the junction of the water outlet confluence channel 62 and the first annular water channel 63 and the second annular water channel 64 for cooling the cylinder body 4. The cooling water return hole 66 for the cooling water return after the cylinder body 4 is cooled, whereby the cooling water delivered by the water pump 5 can not only cool the cylinder head 3, but also cool the cylinder body 4, thereby ensuring the operating efficiency and service life of the cylinder 2; it is worth mentioning that by arranging the cooling water inlet hole 65 and the cooling water return hole 66 in the above manner, it is not necessary to set an isolation mechanism on the cylinder head 3 or the cylinder body 4, and the cooling water can effectively control the specified route of the cooling water flowing through the cylinder head 3 and the cylinder body 4.

如圖3、4、5、8所示，該水套6於該第一環水道63朝該汽缸頭3的缸孔中心延設有水路較淺的淺水道區631；該第二環水道 64側朝缸孔中心凹設有核心水道區641；該核心水道區641與該淺水道區631之間安裝有點火器7，由該汽缸頭3的缸孔軸向觀視，該點火器7的電極段71伸入該核心水道區641的更下方，以及該淺水道區631伸入該點火器7的插頭段72的更下方；從而可提升該點火器7與安裝該點火器7用的點火器安裝座(圖式中未繪出)及該汽缸頭3中央部位的冷卻效果。 As shown in Figures 3, 4, 5, and 8, the water jacket 6 has a shallow water channel area 631 extending from the first annular water channel 63 toward the center of the cylinder bore of the cylinder head 3; the second annular water channel 64 has a core water channel area 641 on the side toward the center of the cylinder bore; an igniter 7 is installed between the core water channel area 641 and the shallow water channel area 631, and when viewed from the axial direction of the cylinder bore of the cylinder head 3, the electrode section 71 of the igniter 7 extends further below the core water channel area 641, and the shallow water channel area 631 extends further below the plug section 72 of the igniter 7; thereby, the cooling effect of the igniter 7, the igniter mounting seat (not shown in the figure) for mounting the igniter 7, and the central part of the cylinder head 3 can be improved.

如圖2、3、4、5所示，該水套6的該入水引道61具有入水引道中心線61a，該出水匯流道62具有出水匯流道中心線62a；該水套6於該入水引道61的中心點與該出水匯流道62的中心點形成一中直線L；該汽缸頭3內於該進氣道31側具有進氣閥口311，於該排氣道32側具有排氣閥口321，該水套6具有將該進氣閥口311與該排氣閥口321隔開的平直線L1；其中，該出水匯流道62鄰近該第一環水道63與該第二環水道64處具有匯流口621，該匯流口621係偏向該第二環水道64開設，可使整體的進入該水套6內冷卻水，進入該第二環水道64內冷卻水量會多於進入該第一環水道63的冷卻水量；藉此可減少冷卻水由該第一環水道63與該第二環水道64流入該出水匯流道62內的流速差，從而可避免該汽缸頭3的冷卻不均的問題產生。 As shown in FIGS. 2, 3, 4 and 5, the water inlet channel 61 of the water jacket 6 has a water inlet channel centerline 61a, and the water outlet confluence channel 62 has a water outlet confluence channel centerline 62a; the water jacket 6 forms a center straight line L at the center point of the water inlet channel 61 and the center point of the water outlet confluence channel 62; the cylinder head 3 has an intake valve 311 on the intake channel 31 side and an exhaust valve 321 on the exhaust channel 32 side, and the water jacket 6 has a straight line L1 separating the intake valve 311 from the exhaust valve 321; wherein The outlet confluence channel 62 has a confluence port 621 near the first annular water channel 63 and the second annular water channel 64. The confluence port 621 is opened toward the second annular water channel 64, so that the cooling water entering the water jacket 6 as a whole, the amount of cooling water entering the second annular water channel 64 will be greater than the amount of cooling water entering the first annular water channel 63; thereby reducing the flow rate difference of cooling water flowing from the first annular water channel 63 and the second annular water channel 64 into the outlet confluence channel 62, thereby avoiding the problem of uneven cooling of the cylinder head 3.

如圖3、4、5所示，該水套6的該第一環水道63包括有連通該入水引道61的第一前段環水道63a，以及連通該出水匯流道62的第一後段環水道63b；該第二環水道64包括有連通該入水引道61的第二前段環水道64a，以及連通該出水匯流道62的第二後段環水道64b；其中，該第二前段環水道64a與該第二後段環水道64b是 經由大致朝該汽缸頭3的缸孔中心凹入的該核心水道區641形成相連通。 As shown in Figures 3, 4 and 5, the first annular water channel 63 of the water jacket 6 includes a first front annular water channel 63a connected to the water inlet channel 61, and a first rear annular water channel 63b connected to the water outlet confluence channel 62; the second annular water channel 64 includes a second front annular water channel 64a connected to the water inlet channel 61, and a second rear annular water channel 64b connected to the water outlet confluence channel 62; wherein the second front annular water channel 64a and the second rear annular water channel 64b are connected via the core water channel area 641 that is recessed approximately toward the center of the cylinder bore of the cylinder head 3.

如圖3、4、5、8所示，該核心水道區641具有連通該第二前段環水道64a的進水端6411，連通該第二後段環水道64b的出水端6412，以及連通該進水端6411與該出水端6412的核心腔室6413；該第二後段環水道64b包括有鄰近該出水端6412的接收段64b1與鄰近該出水匯流道62的中間段64b2；其中，該中間段64b2的水路通道的截面積(如圖4的a-a放大圖所示)係小於該接收段64b1的水路通道的截面積(圖4的b-b放大圖所示)，藉此可加速讓流經該核心水道區641(即流經該核心腔室6413)的冷卻水朝該出水匯流道62流出，藉此可避免該核心水道區641積熱造成熱傷害，同時可使安裝該點火器7的周圍獲得較佳的散熱效果。 As shown in FIGS. 3, 4, 5, and 8, the core water channel area 641 has a water inlet 6411 connected to the second front section annular water channel 64a, a water outlet 6412 connected to the second rear section annular water channel 64b, and a core chamber 6413 connected to the water inlet 6411 and the water outlet 6412; the second rear section annular water channel 64b includes a receiving section 64b1 adjacent to the water outlet 6412 and a middle section 64b2 adjacent to the water outlet confluence channel 62; wherein the middle section The cross-sectional area of the water channel of section 64b2 (as shown in the enlarged view of a-a in FIG4 ) is smaller than the cross-sectional area of the water channel of the receiving section 64b1 (as shown in the enlarged view of b-b in FIG4 ), thereby accelerating the cooling water flowing through the core water channel area 641 (i.e., flowing through the core chamber 6413) to flow out toward the water outlet confluence channel 62, thereby avoiding heat accumulation in the core water channel area 641 to cause heat damage, and at the same time, achieving a better heat dissipation effect around the installation of the igniter 7.

如圖3、4、6、7所示，該核心水道區641的該進水端6411截面積於大該出水端6412的截面積，圖7中的該核心水道區641的剖視部分係為圖6的c-c剖視圖，其中，圖7中的W1表示該進水端6411的截面寬度，W2表示該出水端6412的截面寬度；L1該進水端6411的截面長度，L2該出水端6412的截面長度；藉此當部分的冷卻水由該入水引道61進入該第二環水道64後，係先對該進水端6411進行冷卻散熱，由於該進水端6411截面積於大該出水端6412的截面積，且該進水端6411係位於該排氣道32，因此更可讓汽缸頭3最熱處的該排氣道32獲得較佳的冷卻散熱效果，從而更可避免該核心水道區641積熱造成熱傷害，同時也更可使安裝該點火器7 的周圍獲得較佳的散熱效果。 As shown in Figures 3, 4, 6, and 7, the cross-sectional area of the water inlet end 6411 of the core water channel area 641 is larger than the cross-sectional area of the water outlet end 6412. The cross-sectional view of the core water channel area 641 in Figure 7 is the c-c cross-sectional view of Figure 6, wherein W1 in Figure 7 represents the cross-sectional width of the water inlet end 6411, and W2 represents the cross-sectional width of the water outlet end 6412; L1 represents the cross-sectional length of the water inlet end 6411, and L2 represents the cross-sectional length of the water outlet end 6412; thereby, when part of the cooling water is discharged from the core water channel area 641, the cooling water is discharged from the core water channel area 641. After the water inlet channel 61 enters the second annular water channel 64, the water inlet end 6411 is first cooled and heat dissipated. Since the cross-sectional area of the water inlet end 6411 is larger than the cross-sectional area of the water outlet end 6412, and the water inlet end 6411 is located at the exhaust channel 32, the exhaust channel 32 at the hottest part of the cylinder head 3 can obtain a better cooling and heat dissipation effect, thereby avoiding heat damage caused by heat accumulation in the core water channel area 641, and at the same time, the surrounding area where the igniter 7 is installed can obtain a better heat dissipation effect.

如圖2、3、4、5所示，該入水引道61的該入水引道中心線61a朝該第一環水道63的冷卻水水流方向的延伸線與該中直線L所形成的夾角θ小於45度；該出水匯流道62的該出水匯流道中心線62a，朝該第二環水道64的冷卻水水流來向的延伸線與該中直線L所形成的夾角θ1大於45度，意即該夾角θ1的角度大於夾角θ角度，藉此可有效抑制該第一環水道63的冷卻水流入該出水匯流道62末端的流速，並可增加該第二環水道64的冷卻水流入該出水匯流道62末端的流速，從而可使該第一環水道63與該第二環水道64二側冷卻水的流速減少速差；同時藉由該夾角θ1的角度較大，因此可使流經該第二環水道64冷卻水能更順暢的流入該出水匯流道62內，更進一步言，即冷卻水該入水引道61流入後，大部分的冷卻水可被導向該第二環水道64內，進而可使該汽缸頭3的冷卻散熱均勻化。 As shown in FIGS. 2, 3, 4, and 5, the angle θ formed by the extension line of the center line 61a of the water inlet channel 61 toward the cooling water flow direction of the first annular water channel 63 and the center straight line L is less than 45 degrees; the angle θ1 formed by the extension line of the center line 62a of the water outlet confluence channel 62 toward the cooling water flow direction of the second annular water channel 64 and the center straight line L is greater than 45 degrees, that is, the angle θ1 is greater than the angle θ, thereby effectively inhibiting the cooling water of the first annular water channel 63 from flowing into the water outlet confluence channel 62. The flow rate at the end of the second annular water channel 64 can be increased, and the flow rate of the cooling water flowing into the end of the outlet confluence channel 62 can be increased, so that the flow rate of the cooling water on both sides of the first annular water channel 63 and the second annular water channel 64 can be reduced. At the same time, the angle of the angle θ1 is larger, so that the cooling water flowing through the second annular water channel 64 can flow more smoothly into the outlet confluence channel 62. In other words, after the cooling water flows into the water inlet channel 61, most of the cooling water can be guided to the second annular water channel 64, thereby making the cooling and heat dissipation of the cylinder head 3 uniform.

如圖3、4、5所示，該水套6的該冷卻水流入孔65與該冷卻水回流孔66截面積，以該中直線L來界分其大部分係位於該水套6的該第二環水道64內；更明確說，該冷卻水流入孔65以該中直線L為界，位於該第一環水道63內截面的總面積小於位於該第二環水道64內截面的總面積；該冷卻水回流孔66以該中直線L為界，位於該第一環水道63內截面的總面積小於位於該第二環水道64內截面的總面積；藉此可有效控制冷卻水流入該汽缸本體42的量，以及藉由該冷卻水回流孔66的出口大部分係位於該第二環水道64內，因此更可提升該第二環水道64側冷卻水流入該出水匯流道62內流速。 As shown in FIGS. 3, 4 and 5, the cross-sectional area of the cooling water inlet 65 and the cooling water return hole 66 of the water jacket 6 is mostly located in the second annular water channel 64 of the water jacket 6, as demarcated by the middle straight line L. More specifically, the total cross-sectional area of the cooling water inlet 65 located in the first annular water channel 63, as demarcated by the middle straight line L, is smaller than the total cross-sectional area of the cooling water return hole 66 located in the second annular water channel 64. The hole 66 is bounded by the middle straight line L, and the total area of the cross section located in the first annular water channel 63 is smaller than the total area of the cross section located in the second annular water channel 64; thereby, the amount of cooling water flowing into the cylinder body 42 can be effectively controlled, and since most of the outlet of the cooling water return hole 66 is located in the second annular water channel 64, the flow rate of the cooling water on the side of the second annular water channel 64 flowing into the water outlet confluence channel 62 can be increased.

如圖4、5所示，該水套6以將該進氣閥口311與該排氣閥口321隔開的該平直線L1為界，位於該排氣閥口321側的該第一環水道63的第一前段環水道63a長度大於該第二環水道64的該第二前段環水道64a的長度，因此可使該汽缸頭3於該排氣閥口321側可以獲得較佳冷卻散熱效果。 As shown in Figures 4 and 5, the water jacket 6 is bounded by the straight line L1 separating the intake valve port 311 from the exhaust valve port 321. The length of the first front section of the first annular water channel 63a of the first annular water channel 63 located on the exhaust valve port 321 side is greater than the length of the second front section of the annular water channel 64a of the second annular water channel 64. Therefore, the cylinder head 3 can obtain a better cooling and heat dissipation effect on the exhaust valve port 321 side.

本發明主要在於，藉由汽缸2具有汽缸本體4與組設於該汽缸本體4上的汽缸頭3，汽缸頭3內具有可供冷卻水流通用的水套6；該汽缸頭3具有相反側對向設置連通外部的冷卻水出口33與冷卻水入口34；該水套6具有連通冷卻水入口33的入水引道61，連接該冷卻水出口33的出水匯流道62；該入水引道61連接有第一環水道63與第二環水道64；該第一環水道63與該第二環水道64另一側連接該出水匯流道62；此可縮小該第一環水道63與該第二環水道64的流速差，進而可提升該汽缸頭3冷卻散熱均勻效果。 The present invention mainly lies in that the cylinder 2 has a cylinder body 4 and a cylinder head 3 assembled on the cylinder body 4, and the cylinder head 3 has a water jacket 6 for cooling water flow; the cylinder head 3 has a cooling water outlet 33 and a cooling water inlet 34 arranged on opposite sides and connected to the outside; the water jacket 6 has a water inlet channel 61 connected to the cooling water inlet 33, and a water outlet confluence channel 62 connected to the cooling water outlet 33; the water inlet channel 61 is connected to a first annular water channel 63 and a second annular water channel 64; the first annular water channel 63 and the second annular water channel 64 are connected to the water outlet confluence channel 62 on the other side; this can reduce the flow rate difference between the first annular water channel 63 and the second annular water channel 64, thereby improving the uniform cooling and heat dissipation effect of the cylinder head 3.

本發明之汽缸的冷卻機構藉由上述之構造，確能達到訴求之目的，應已符合發明專利之新穎性、進步性及產業利用性之要件，爰依法提出發明專利之申請，祈請 貴審查委員之詳鑑，並賜核准發明專利之審定，至感德便。 The cylinder cooling mechanism of this invention can achieve the claimed purpose through the above-mentioned structure, and should have met the requirements of novelty, advancement and industrial applicability of invention patents. Therefore, I have filed an application for invention patents in accordance with the law and pray for your detailed review and approval of the invention patent. I am very grateful.

33:冷卻水出口 33: Cooling water outlet

34:冷卻水入口 34: Cooling water inlet

6:水套 6: Water jacket

61:入水引道 61: Water access

62:出水匯流道 62: Water outlet confluence channel

621:匯流口 621: Confluence

63:第一環水道 63: First Ring Waterway

63a:第一前段環水道 63a: The first front section of the ring waterway

63b:第一後段環水道 63b: The first rear section of the ring waterway

631:淺水道區 631: Shallow waterway area

64:第二環水道 64: Second Ring Waterway

64a:第二前段環水道 64a: The second front section of the ring waterway

64b:第二後段環水道 64b: The second rear section of the ring waterway

64b1:接收段 64b1: receiving segment

64b2:中間段 64b2: Middle section

641:核心水道區 641: Core waterway area

6411:進水端 6411: Water inlet end

6412:出水端 6412: Water outlet

6413:核心腔室 6413: Core Chamber

65:冷卻水流入孔 65: Cooling water inflow hole

66:冷卻水回流孔 66: Cooling water return hole

L:中直線 L: Center line

Claims (9)

一種汽缸的冷卻機構，汽缸具有汽缸本體與組設於該汽缸本體上的汽缸頭，該汽缸頭內具有可供冷卻水流通用的水套；該汽缸頭具有相反側對向設置連通外部的冷卻水出口與冷卻水入口；該水套具有連通冷卻水入口的入水引道，連接該冷卻水出口的出水匯流道；該入水引道連接有第一環水道與第二環水道；該第一環水道與該第二環水道另一側連接該出水匯流道。 A cylinder cooling mechanism, the cylinder has a cylinder body and a cylinder head assembled on the cylinder body, the cylinder head has a water jacket for cooling water flow; the cylinder head has a cooling water outlet and a cooling water inlet arranged on opposite sides and connected to the outside; the water jacket has a water inlet channel connected to the cooling water inlet, and a water outlet confluence channel connected to the cooling water outlet; the water inlet channel is connected to a first annular water channel and a second annular water channel; the first annular water channel and the second annular water channel are connected to the water outlet confluence channel on the other side. 如請求項1所述之汽缸的冷卻機構，其中，該出水匯流道具有匯流口，該匯流口係偏向該第二環水道開設。 A cylinder cooling mechanism as described in claim 1, wherein the water outlet confluence channel has a confluence port, and the confluence port is opened toward the second annular water channel. 如請求項1所述之汽缸的冷卻機構，其中，該水套的該入水引道具有入水引道中心線，該出水匯流道具有出水匯流道中心線；該水套於該入水引道的中心點與該出水匯流道的中心點形成一中直線；該汽缸頭內於進氣道側具有進氣閥口，於排氣道側具有排氣閥口，該水套具有將該進氣閥口與該排氣閥口隔開的平直線；該第二環水道側朝缸孔中心凹設有核心水道區。 The cooling mechanism of the cylinder as described in claim 1, wherein the water inlet channel of the water jacket has a water inlet channel centerline, and the water outlet confluence channel has a water outlet confluence channel centerline; the water jacket forms a central straight line at the center point of the water inlet channel and the center point of the water outlet confluence channel; the cylinder head has an intake valve on the intake channel side and an exhaust valve on the exhaust channel side, and the water jacket has a straight line separating the intake valve and the exhaust valve; the second annular water channel side is provided with a core water channel area toward the center concave of the cylinder hole. 如請求項1或3所述之汽缸的冷卻機構，其中，該水套的該第二環水道包括第二前段環水道及第二後段環水道；該第二前段環水道及該第二後段環水道連通該核心水道區；該核心水道區具有進水端、出水端及核心腔室；該第二後段環水道包括有接收段與中間段；其中，該中間段的水路通道的截面積係小於該接收段的水路通道的截面積。 A cylinder cooling mechanism as described in claim 1 or 3, wherein the second annular water channel of the water jacket includes a second front annular water channel and a second rear annular water channel; the second front annular water channel and the second rear annular water channel are connected to the core water channel area; the core water channel area has a water inlet end, a water outlet end and a core chamber; the second rear annular water channel includes a receiving section and a middle section; wherein the cross-sectional area of the water channel of the middle section is smaller than the cross-sectional area of the water channel of the receiving section. 如請求項1或3所述之汽缸的冷卻機構，其中，該水套的該 第二環水道包括第二前段環水道及第二後段環水道；該第二前段環水道及該第二後段環水道連通該核心水道區；該核心水道區具有進水端、出水端及核心腔室；該進水端截面積於大該出水端的截面積。 A cylinder cooling mechanism as described in claim 1 or 3, wherein the second annular water channel of the water jacket includes a second front annular water channel and a second rear annular water channel; the second front annular water channel and the second rear annular water channel are connected to the core water channel area; the core water channel area has a water inlet end, a water outlet end and a core chamber; the cross-sectional area of the water inlet end is larger than the cross-sectional area of the water outlet end. 如請求項3所述之汽缸的冷卻機構，其中，該入水引道的該入水引道中心線朝第一環水道的冷卻水水流方向的延伸線與該中直線所形成的夾角小於，該出水匯流道中心線朝第二環水道的冷卻水水流來向的延伸線與該中直線所形成的夾角。 The cylinder cooling mechanism as described in claim 3, wherein the angle formed by the extension line of the water inlet channel centerline toward the cooling water flow direction of the first annular water channel and the center straight line is smaller than the angle formed by the extension line of the water outlet confluence channel centerline toward the cooling water flow direction of the second annular water channel and the center straight line. 如請求項6所述之汽缸的冷卻機構，其中，該水套更具有冷卻水流入孔與冷卻水回流孔；該水套的該冷卻水流入孔與該冷卻水回流孔截面積，以該中直線來界分其大部分係位於該水套的該第二環水道內。 The cooling mechanism of the cylinder as described in claim 6, wherein the water jacket further has a cooling water inlet hole and a cooling water return hole; the cross-sectional area of the cooling water inlet hole and the cooling water return hole of the water jacket, divided by the median straight line, is mostly located in the second annular water channel of the water jacket. 如請求項6所述之汽缸的冷卻機構，其中，該第一環水道包括有連通該入水引道的第一前段環水道，以及連通該出水匯流道的第一後段環水道；該第二環水道包括有連通該入水引道的第二前段環水道，以及連通該出水匯流道的第二後段環水道；其中，該第二前段環水道與該第二後段環水道是經由大致朝該核心水道區相連通；該水套以該平直線為界，位於該排氣閥口側的該第一環水道的第一前段環水道長度大於該第二環水道的該第二前段環水道的長度。 The cylinder cooling mechanism as described in claim 6, wherein the first annular water channel includes a first front annular water channel connected to the water inlet channel and a first rear annular water channel connected to the water outlet confluence channel; the second annular water channel includes a second front annular water channel connected to the water inlet channel and a second rear annular water channel connected to the water outlet confluence channel; wherein the second front annular water channel and the second rear annular water channel are connected through a direction generally toward the core water channel area; the water jacket is bounded by the straight line, and the length of the first front annular water channel of the first annular water channel located on the exhaust valve port side is greater than the length of the second front annular water channel of the second annular water channel. 如請求項1所述之汽缸的冷卻機構，其中，該水套於該第一環水道朝該汽缸頭的缸孔中心延設有水路較淺的淺水道區；該第二環水道側朝缸孔中心凹設有核心水道區；該核心水道區與該淺水道區之間安裝有點火器，由該汽缸頭的缸孔軸向觀視，該點火器的電極段伸 入該核心水道區的更下方，以及該淺水道區伸入該點火器的插頭段的更下方。 A cylinder cooling mechanism as described in claim 1, wherein the water jacket has a shallow water channel area with a shallower water path extending from the first annular water channel toward the center of the cylinder bore of the cylinder head; the second annular water channel has a core water channel area toward the center of the cylinder bore; an igniter is installed between the core water channel area and the shallow water channel area, and when viewed from the axial direction of the cylinder bore of the cylinder head, the electrode section of the igniter extends further below the core water channel area, and the shallow water channel area extends further below the plug section of the igniter.

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