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    • 6. 发明专利
    • CROSS FIN TUBE TYPE HEAT EXCHANGER
    • JPH11248385A
    • 1999-09-14
    • JP6414698
    • 1998-02-26
    • DAIKIN IND LTD
    • KITAZAWA MASAAKIYANO YUKIMASATANAKA JUNICHIRO
    • F28F1/32F28F17/00
    • PROBLEM TO BE SOLVED: To provide a cross fin tube type heat exchanger with superior defrosting performance. SOLUTION: Each heat transfer tube row of upwind and downwind sides is divided into upper and lower parts at a middle height position, and the parts are mutually connected by first and second middle part tie tubes 11 and 12 for setting to an inverted γ-shaped path shape. When the circulation direction of a refrigerant on defrosting operation is reversed as compared with that on heating operation, the refrigerant for flowing into the lower edge of the downwind side is sent to the upper half part of the upwind side through the first middle part tie tube 11, and the refrigerant is circulated at the upper half part of the upwind side before the decline of a refrigerant temperature with a pressure loss is increased, thus melting frost adhering to the upper half part of the upwind side, furthermore, melting the frost adhering to the lower half part of the upwind side by drain water being generated by melting the frost, efficiently defrosting the frost of the upwind side with a large amount of formed frost, and hence quickly completing entire defrosting.
    • 9. 发明专利
    • Refrigerant piping for heat exchanger
    • 热交换器制冷管路
    • JP2008145068A
    • 2008-06-26
    • JP2006334205
    • 2006-12-12
    • Daikin Ind Ltdダイキン工業株式会社
    • NAKADA HARUOOKA YASUHIKOTANAKA JUNICHIRONUMATA MITSUHARU
    • F28F21/08F24H1/10F24H9/00F25B1/00F28D7/02
    • PROBLEM TO BE SOLVED: To provide refrigerant piping for a heat exchanger, hardly causing stress corrosion cracks in the case where refrigerant piping such as refrigerant piping of a heat exchanger for supplying hot water is coated with heat insulating material where urea remains and used.
      SOLUTION: In this copper-made refrigerant pipings 3A, 3B for the heat exchanger, piping material is made of phosphorous-deoxidized copper, and the pipings are coated with heat insulating material having urea remaining as residue. The pipings are used under the condition that tensile stress is applied by internal pressure in circulation of a refrigerant. The pipings are formed of oxygen-free copper, which will not cause corrosion crack due to tensile stress. Thus, when the oxygen-free copper not causing stress corrosion crack is adopted, stress corrosion crack of copper-made refrigerant pipings 3A, 3B in which the pipe material is formed of phosphorous-deoxidized copper, and the pipings are coated with heat insulating material having urea remaining as residue, and which is used under the condition that tensile stress is applied by internal pressure in circulation of the refrigerant, can be restrained as much as possible, so that the reliability of a product can be improved.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供热交换器的制冷剂管道,在用于供应热水的热交换器的制冷剂管道等制冷剂管道涂覆有尿素保留的隔热材料的情况下,难以产生应力腐蚀裂纹,以及 用过的。 解决方案:在这种用于热交换器的铜制制冷剂管道3A,3B中,管道材料由磷脱氧铜制成,并且管道涂覆有作为残留物残留尿素的绝热材料。 在通过制冷剂循环中的内部压力施加拉伸应力的条件下使用管道。 管道由无氧铜形成,不会由于拉伸应力而引起腐蚀裂纹。 因此,当不产生应力腐蚀裂纹的无氧铜时,采用磷脱氧铜形成管材的铜制制冷剂管3A,3B的应力腐蚀裂纹,并且管道涂有绝热材料 在作为残留物残留尿素的情况下,可以尽可能地抑制在制冷剂循环中通过内部压力施加拉伸应力的条件下使用,从而可以提高产品的可靠性。 版权所有(C)2008,JPO&INPIT
    • 10. 发明专利
    • Air conditioner
    • 冷气机
    • JP2006250528A
    • 2006-09-21
    • JP2006169157
    • 2006-06-19
    • Daikin Ind Ltdダイキン工業株式会社
    • TANAKA JUNICHIROOKUBO YOSHIAKI
    • F24F1/00
    • PROBLEM TO BE SOLVED: To provide an air conditioner capable of improving heat exchange performance while reducing the size and the noise.
      SOLUTION: In a heat exchanger 10 constituted by combining a front surface side heat exchanger 1 and a back surface side heat exchanger 2 in a reverse V shape, a heat exchange amount of the front surface side heat exchanger 1 is larger than that of the back surface side heat exchanger 2. Concretely, a number of heat transmitting pipes 21 included in a passage R1 passing through the back surface side heat exchanger 2 is larger than a number of the heat transmitting pipes 21 included in passages R2 and R3 passing through the front side heat exchanger 1.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供能够在减小尺寸和噪声的同时提高热交换性能的空调。 解决方案:在以前V面组合前表面侧热交换器1和背面侧热交换器2而构成的热交换器10中,前表面侧热交换器1的热交换量大于前表面侧热交换器1的热交换量 具体地说,通过背面侧热交换器2的通路R1中包括的多个传热管21比通过通路R2和R3中通过的传热管21的数量大 通过前侧热交换器1。(C)2006,JPO&NCIPI