摘要:
An evaporator operated with the carbon dioxide gas, comprises at least a unit core including a plurality of heat transmission tubes having a path with a refrigerant flowing therein, a first tank connected to an end opening of the heat transmission tubes and formed with a refrigerant supply path and a second tank connected to the other end opening of the heat transmission tubes and formed with a refrigerant discharge path. The width L1 of the unit core is given as 50 mm≦L1≦175 mm. The equivalent diameter d of the refrigerant supply path of the first tank and the refrigerant discharge path of the second tank is given as 4.7 mm≦d≦9.6 mm.
摘要翻译:用二氧化碳气体操作的蒸发器至少包括一个单元芯,该单元芯包括多个传热管,该导热管具有在其中流动的制冷剂的路径,第一槽连接到传热管的端部开口并形成有制冷剂供应 路径和连接到传热管的另一端开口的第二罐,并形成有制冷剂排放路径。 单位核心的宽度L 1为50毫米<= L 1 <= 175毫米。 第一罐的制冷剂供给路径的当量直径d和第二罐的制冷剂排出路径的给定值为4.7mm <= d <= 9.6mm。
摘要:
A refrigerant evaporator includes an upstream tank portion for distributing refrigerant into all laminated tubes of a core portion. The upstream tank portion includes a first distribution passage for distributing the refrigerant into the tubes in a direction parallel to a tank longitudinal direction, a second distribution passage for distributing the refrigerant from the first distribution passage into the tubes in a tank width direction, and a communication passage through which the refrigerant from the first distribution passage is supplied to the second distribution passage after flowing in the tank longitudinal direction. Therefore, refrigerant can be uniformly introduced into all the tubes.
摘要:
In a high-pressure side heat exchanger for a vapor compression refrigerant cycle, a refrigerant passage is formed such that a flow area (S), a length (L), and an equivalent diameter (d) satisfy the conditional expression 0.04×e−1.8d≦S/L≦2.1×e−1.8d. The flow area (S) is obtained by dividing the product of a total cross-sectional area of the passages in one tube and the number of tubes by the path number. The length (L) is a flow distance of the refrigerant from the refrigerant inlet to the refrigerant outlet. That is, the length (L) is obtained by the product of the length of the tube and the path number. The diameter (d) is obtained by dividing the product of four and the cross-sectional area of the passage by a circumference of the passage.
摘要翻译:在蒸汽压缩制冷剂循环的高压侧热交换器中,形成制冷剂通路,使得流动面积(S),长度(L)和当量直径(d)满足条件表达式0.04xe -1.8d <= S / L <= 2.1×E -1.8d SUP>。 流量面积(S)通过将一个管中的通道的总截面积与管数的乘积除以路径数获得。 长度(L)是制冷剂从制冷剂入口到制冷剂出口的流动距离。 也就是说,长度(L)通过管的长度和路径数的乘积获得。 直径(d)通过将通道的四倍和通道的横截面积除以通道的圆周来获得。
摘要:
An aluminum alloy extruded product exhibiting excellent surface properties, contains 0.8 to 1.6% of Mn and 0.4 to 0.8% of Si at a ratio of Mn content to Si content (Mn %/Si %) of 0.7 to 2.4, with the balance being Al and inevitable impurities, the number of intermetallic compounds with a diameter (circle equivalent diameter) of 0.1 to 0.9 μm dispersed in a matrix being 2×105 or more per square millimeter. The aluminum alloy extruded product allows extrusion of a thin multi-port tube at a high limiting extrusion rate, prevents deposits from adhering to the surface of the extruded tube, and may be suitably used as a constituent member for an aluminum alloy automotive heat exchanger.
摘要:
A heat exchange tube having a flat shape includes a plurality of fluid paths having a circular cross section and extending in a longitudinal direction of the tube. Each fluid path is parallel to each other fluid path. The tube is dimensioned such that a distance between two adjacent fluid paths is defined as Wt, and a circumferential thickness between a surface of the tube and an outermost fluid path is defined as Ht. The distance Wt and the circumferential thickness Ht have a relationship as 0.42≦Ht/Wt≦0.98.
摘要:
A silencer for a refrigeration cycle system is disclosed. The silencer includes a silencing chamber 15a formed in a housing 16, an inlet pipe 20 connected to the housing 16 to allow the refrigerant to flow into the silencing chamber 15a, and an outlet pipe 21 connected to the housing 16 to allow the refrigerant to flow out of the silencing chamber 15a. The direction in which the inlet pipe 20 is connected to the housing 16 and the direction in which the outlet pipe 21 is connected to the housing 16 cross each other. A bend 21c projected into the silencing chamber 15a and curved toward the upstream end 20b of the inlet pipe 20 is formed at the upstream end 21b portion of the outlet pipe 21. The bend 21c is formed with an opening 21d to open the inside part thereof. As a result, the refrigerant that has flowed into the silencing chamber 15a can be guided smoothly to the outlet pipe 21 while at the same time avoiding a case in which the bend 21c suppresses the interference of the pressure wave.
摘要:
In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is Ψh, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5−Ψh+1.03)}
摘要:
The heat exchanger includes a first fluid path unit 10 and a second fluid path unit 9. The first fluid path unit 10 has at least two return flow paths 26, in which a first fluid flows, in opposed relation to each other and which are stacked continuously through folded portions 27, 18. The second fluid path unit 9 with a second fluid flows therein has second fluid paths 22, 23 which are stacked in the stacking direction (Z direction) of the return flow paths 26 through communication units 14 to 19 and which are arranged between the return flow paths 26. The second fluid paths 22, 23 have U-shaped flow paths in which the second fluid turns back and makes a U turn at an end 13 on the surface substantially perpendicular to Z direction. The communication units 14 to 19 communicating with the U-shaped flow paths are arranged at the other end of the second fluid path unit. Therefore, it is possible to provide a easy to assemble heat exchanger which is able to be produced efficiently.
摘要:
In a heat exchanging apparatus for a vapor compression refrigerant cycle, an internal heat exchanger is attached to an end of a radiator. The internal heat exchanger is arranged such that high-pressure refrigerant passages are closer to the radiator than low-pressure refrigerant passages. The heat exchanging apparatus can be mounted on a vehicle such that the radiator receives cooling air more than the internal heat exchanger. Because the internal heat exchanger performs heat exchange between high-pressure refrigerant and low-pressure refrigerant, performance of the internal heat exchanger is not degraded even if it is located at a part receiving less cooling air. Thus, the heat exchanging apparatus is easily mounted on a vehicle by integrating the internal heat exchanger with the radiator, without reducing a cooling capacity of the radiator.
摘要:
In an internal heat exchanger, when a corresponding diameter of a high pressure passage 5a is Ψh, a passage length Lh of the high pressure passage (5a) is so set as to satisfy the relation 9.16/{LN(4.5−Ψh+1.03)}