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    • 131. 发明专利
    • Plate fin tube type heat exchanger
    • 板式管状热交换器
    • JPS59189293A
    • 1984-10-26
    • JP6324683
    • 1983-04-11
    • Mitsubishi Electric Corp
    • KONISHI MASARUSAKUMA KIYOSHIOKADA TETSUJITANIMURA YOSHIAKI
    • F28F1/32
    • F28F1/325
    • PURPOSE:To establish the improvement of heat transfer rate and the reduction of wind pressure loss by a structure wherein flat plate strips are interposed between strips stepped in falling from left to right and strips stepped in rising from left to right as in a mirror symmetry relationship. CONSTITUTION:A plurality of inserting holes 2 are provided on a fin base 10. Lances with a proper length are formed normal to the direction of steps so that the section after lancing are arranged alternately with strips 11 stepped in falling from left to right and stips 12 stepped in rising from left to right in the flow direction. When the several sheets of fins 11 and 12 formed as described above are laminated, wavy flow paths, in which flow paths a1 bent twice and flow paths a2 bent twice just after the paths a1 are combined with each other, are formed by the spaces of the strip 11 stepped in falling from left to right and the strip 12 stepped in rising from left to right surrounded with the adjacent strip 11 stepped in falling from left to right and the adjacent strip 12 stepped in rising from left to right parallel to said strips 11 and 12 respectively. Accordingly, air flows (a) change their flow direction slowly twice with the strips 11 and 12, resulting in thinning the total boundary layers by combining with the leading edge effect and consequently improving the heat transfer rate of a heat exchanger.
    • 目的:通过一种结构来建立传热速率的提高和减小风压损失的结构,其中平板条被插入从左到右堕落的条带之间,并且以从镜像对称关系的方式从左到右逐渐上升的条带 。 构成:在翅片基座10上设置多个插入孔2.具有适当长度的长度形成为垂直于台阶的方向,使得穿刺后的部分交替地布置有从左到右逐渐下降的条带11 12沿流动方向从左向右上升。 当如上所述形成的几片翅片11和12层叠时,在路径a1彼此组合之后,流动路径a1弯曲两次,流动路径a2弯曲两次的波浪流动路径由 条带11从左向右逐渐下降,并且条12从左到右逐渐上升,相邻的条11围绕着,从左到右逐渐下降,相邻条带12从左到右平行于所述条带逐渐上升 11和12。 因此,空气流动(a)用带11和12缓慢地改变其流动方向两次,从而通过结合前缘效应使总边界层变薄,从而提高热交换器的传热速率。
    • 136. 发明专利
    • HEAT PUMP TYPE HOT WATER SUPPLYING APPARATUS
    • JPH06221673A
    • 1994-08-12
    • JP1155893
    • 1993-01-27
    • MITSUBISHI ELECTRIC CORP
    • NANATANE TETSUJITANIMURA YOSHIAKIIIJIMA HITOSHISAKUMA KIYOSHIOKADA TETSUJI
    • F24H1/00F24H1/18F24H4/00
    • PURPOSE:To continuously conduct an operation for heating to a suitable bathing temperature and a hot water supply by supplying to switch hot water storage tanks by a multidirectional switching valve of a water supply system connected to a lower part of the tank, switching to the tank for heating to the suitable bathing temperature by the valve of a circulation system, and circulating water to a heater to heat it to the suitable bathing temperature. CONSTITUTION:The heat pump type hot water supplying apparatus comprises a heater 11 by a heat pump system and a plurality of hot water storage tanks 1a, 1b provided in parallel. The apparatus comprises a circulation system for circulating waters of the tanks 1a, 1b to the heater 11 to heat it to suitable bathing temperature, a water supply system connected to lower parts of the tanks 1a, 1b to supply water to the tanks 1a, 1b, and a hot water supply system for supplying hot water from upper parts of the tanks 1a, 1b. The apparatus also comprises heaters 25a, 25b respectively arranged in the tanks 1a, 1b, a first multi-directional switching valve 13a for switching the tanks 1a, 1b, and a second multidirectional switching valve 14b at a branch point to be branched to the tanks of the water supply system.
    • 137. 发明专利
    • AIR CONDITIONER
    • JPH05133554A
    • 1993-05-28
    • JP29286191
    • 1991-11-08
    • MITSUBISHI ELECTRIC CORP
    • YOSHIDA TAKAYUKITANIMURA YOSHIAKIIIJIMA HITOSHI
    • F24F3/147F24F3/00F24F3/12F24F3/153F24F3/16
    • PURPOSE:To make it possible to keep a healthy and comfortable environment indoors by allowing an indoor air generation section to provide a damper, an indoor air supply fan, an indoor return air suction fan, a heat exchanger, an air cleaning device and a total heat exchanger. CONSTITUTION:An air generation section 7 is installed to outdoor equipment 2 and supplies air indoors by way of a duct 4 by driving an indoor air supply fan 9. At that time, a damper 8 changes over a supply air source to an open air. The air introduced indoors is heated or cooled at a heating-cooling heat exchanger 11 as required. The air is further dehumidified or reheated at a dehumidification-reheating heat exchanger 12 as required. Then, the indoor air is dust-removed and deodorized at an air cleaning device 13. After it is diffused indoors, the waste hat is collected at a total heat exchanger 15 and returned to the air generation section by means of a return air suction fan 10. At that time, the damper 8 changes over the air supply source to the returned air. This construction makes it possible to keep an healthy comfortable environment indoors.
    • 138. 发明专利
    • REFRIGERATOR
    • JPH05118669A
    • 1993-05-14
    • JP27530191
    • 1991-10-23
    • MITSUBISHI ELECTRIC CORP
    • IIJIMA HITOSHITANIMURA YOSHIAKI
    • F25B1/00
    • PURPOSE:To reduce the power consumption by arranging an external pressure equalization type temperature expansion valve in which a temperature sensitive cylinder is brought into contact with a suction tube near an outlet of an evaporator and a pressure equalizing tube is connected to the tube between a compressor and a check valve between a capillary and the evaporator. CONSTITUTION:An external pressure equalization type temperature expansion valve 20 is disposed between a capillary 6 and an evaporator 5. In this case, a temperature sensitive cylinder of the valve 20 is brought into contact with a suction tube near an outlet 9 of the evaporator 20, and a pressure equalizing tube 21 is connected to the tube between a compressor 1 and a check valve 12. In this structure, when the compressor 1 is operated, a pressure loss from the outlet 9 of the evaporator to the inlet 8 of the compressor 1 is small, and refrigerant pressure of the tube 21 connected to the suction tube at the side of the inlet 8 is substantially equal to that of the outlet 9 of the evaporator 5. Accordingly, the heating degree of refrigerant of the outlet 9 of the evaporator 5 can be controlled constantly by the valve 20. When the compressor 1 is stopped, the refrigerant pressure of a connector of the tube 21 is abruptly raised due to reverse flow of high temperature and high pressure refrigerant, a temperature of the outlet 9 of the evaporator of a temperature sensitive cylinder mounting part is slowly raised, and a valve closing is rapidly effectively performed.
    • 140. 发明专利
    • HEAT EXCHANGER
    • JPH04165297A
    • 1992-06-11
    • JP29008090
    • 1990-10-26
    • MITSUBISHI ELECTRIC CORP
    • OGUSHI TETSUROKAGA KUNIHIKOTANIMURA YOSHIAKIKURAHASHI KENZOSASAKI YOSHIOSAKURAI MASASHI
    • F28F13/02F28F13/18F28F17/00
    • PURPOSE:To suppress growth of frost and to prevent a decrease in cooling capacity by reducing a distance between a heat transfer side end of an agitating blade and a heat transfer shorter than a rising point for rising the gradient of a convection heat transfer rate rise upon reduction of the distance. CONSTITUTION:When an agitating blade 21 on a disc 22 is rotated by the rotation of a motor 23, the air is driven by a centrifugal force, fed from an air inlet 24 to flow from the inside toward the outside on a heat transfer surface 1a. A distance between the side end of the blade and the transfer surface is approached from a temperature boundary layer so that the blade crosses the layer. Accordingly, an air flow near the transfer surface is disordered to improve its heat transfer ratio. When the air fed into a heat exchanger is cooled on the transfer surface, if the temperature of the transfer surface is below the freezing point of water, steam in the flowing air is solidified on the transfer surface to form a frost layer. If it is above the freezing point, dew-condensation occurs in response to the moisture of the air. Thereafter, when it is further cooled so that the temperature of the transfer surface becomes below the freezing point, water droplets adhered to the transfer surface are solidified to become ice droplets. These frost, water droplets, ice droplets are scraped by the transfer surface, and discharged from an air diffuser by a centrifugal force.