Patent application number | Description | Published |
20120145364 | HEAT EXCHANGER AND INDOOR UNIT PROVIDED WITH THE SAME - A heat exchanger is provided in which a large number of plate-shaped fins are attached to outer peripheries of heat transfer tubes through which refrigerant flows. Three rows of heat transfer tubes are arranged along an air flow direction. An inlet side heat transfer tube in a case of using as an evaporator or an outlet side heat transfer tube in a case of using as a condenser has the smallest diameter. In a case where the most windward side heat transfer tube has the smallest diameter, a tube diameter of the most windward side heat transfer tube is D | 06-14-2012 |
20120318487 | HEAT EXCHANGER FOR AIR CONDITIONER - A heat exchanger comprises a plurality of refrigerant tubes. In a flow divider, a part of a plurality of capillary tubes is connected to an open end portion on a side of a front tube plate, and a remainder of the plurality of the capillary tubes is connected to an open end portion on a side of a rear tube plate. The plurality of refrigerant tubes include even number refrigerant tubes constituted by an even number of heat transfer tube portions and odd number refrigerant tubes constituted by an odd number of heat transfer tube portions. | 12-20-2012 |
20140338874 | HEAT EXCHANGER - A lower space of a first header collecting pipe of a heat exchanger is, by partitions, divided into three communication chambers and a single mixing chamber. The mixing chamber communicates with the communication chamber through a through-hole of a lower horizontal partition, communicates with the communication chamber through a through-hole of a vertical partition, and communicates with the communication chamber through a through-hole of an upper horizontal partition. Gas-liquid refrigerant flows into the mixing chamber, and is mixed in the mixing chamber. Then, the refrigerant is distributed to the communication chambers. Thus, the wetness of refrigerant flowing into a flat tube is uniformized among the flat tubes, and performance of the heat exchanger can be fully achieved. | 11-20-2014 |
20150027161 | HEAT EXCHANGER AND REFRIGERATION DEVICE - A heat exchanger includes a plurality of flattened pipes, a header collection pipe, and a plurality of fins joined to the flattened pipes. The flattened pipes are joined to the header collection pipe. A fluid flowing through an interior of the flattened pipes exchanges heat with air flowing outside the flattened pipes. The header collection pipe has a header collection pipe and a cover member. The header collection pipe body is disposed so that a longitudinal direction is vertically oriented. The cover member is disposed inside from an upper end of the header collection pipe body, and closes off an upper side of the header collection pipe body. The header collection pipe body has a pipe end section that extends upward past the cover member. A drainage part is formed in a part of the pipe end section. | 01-29-2015 |
20150027672 | HEAT EXCHANGER - In a heat exchanger, each of flat tubes ( | 01-29-2015 |
20150068709 | AIR CONDITIONING APPARATUS - An air conditioning apparatus includes an aluminum heat exchanger, an aluminum gas pipe, an aluminum liquid pipe and a copper gas pipe. The aluminum heat exchanger performs heat exchange between air and a refrigerant, and is disposed upright. The aluminum gas pipe channels gas refrigerant, and extends from a side part of the aluminum heat exchanger. The aluminum liquid pipe channels liquid refrigerant, and extends from an area below the aluminum gas pipe in the side part of the aluminum heat exchanger. The copper gas pipe channels gas refrigerant. The aluminum gas pipe is connected in a connecting part to the copper gas pipe from above the copper gas pipe. The aluminum pipe is disposed in an area outside of directly under the connecting part of the aluminum gas pipe and the copper gas pipe. | 03-12-2015 |
Patent application number | Description | Published |
20130284416 | HEAT EXCHANGER AND AIR CONDITIONER - A heat exchanger has a plurality of flat tubes, and a plurality of fins in which the flat tubes are inserted in an orthogonal direction. Each of the fins includes a fin body, and an attachment portion to which the flat tube is attached. The fin body includes an insertion region in which the flat tube is inserted, and an extension region on the downwind side of the insertion region. A spacer configured to keep a space between the fins is formed in each of the insertion region and the extension region by cutting and bending part of the fin. The spacer of the extension region is straight behind the spacer of the insertion region on the downwind side. The spacer of the insertion region is configured such that the spacer body is tilted with respect to an airflow. | 10-31-2013 |
20130292098 | HEAT EXCHANGER AND AIR CONDITIONER - A plurality of flat tubes is, at one end thereof, connected to a first header collecting pipe, and is, at the other end thereof, connected to a second header collecting pipe. Some of the flat tubes forms a main heat exchange part, and the other flat tubes forms an auxiliary heat exchange part. The number of flat tubes of the auxiliary heat exchange part is less than the number of flat tubes of the main heat exchange part. The total cross-sectional area of flow paths per flat tube provided in the auxiliary heat exchange part is greater than the total cross-sectional area of flow paths per flat tube provided in the main heat exchange part. | 11-07-2013 |
20130299141 | HEAT EXCHANGER AND AIR CONDITIONER - A heat exchanger includes flat tubes and fins. The plate-like fins are spaced from one another by a predetermined distance in the direction in which the flat tubes extend. The flat tubes are inserted in pipe insertion portions of the fins. In the fins, parts of the fins between vertically adjacent ones of the flat tubes are heat transfer parts. Each of the heat transfer parts includes protrusions and louvers. The protrusions are located at a windward region of the heat transfer part and formed by making the heat transfer part protrude in an inverted V shape. The louvers are located in a leeward region of the heat transfer part and bend out from the heat transfer part. | 11-14-2013 |
20130299152 | HEAT EXCHANGER AND AIR CONDITIONER - A fin of a heat exchanger includes: a plurality of intermediate plates arranged one above another and dividing a space between adjacent ones of flat tubes into air passages; a plurality of tube insertion portions each provided between vertically adjacent ones of the intermediate plates, with an upwind side thereof being open such that a corresponding one of the flat tubes is inserted therein; a vertically extending downwind plate that is continuous with downwind ends of the plurality of intermediate plates arranged one above another; and a plurality of upwind plates extending further toward an upwind side than the flat tubes from upwind side ends of the intermediate plates. Each of the upwind plates is provided with at least one upwind side heat-transfer portion which projects toward the air passages. | 11-14-2013 |
20130299153 | HEAT EXCHANGER AND AIR CONDITIONER - Each of a plurality of heat-transfer portions has a plurality of protrusions which are protruded toward an air passage and extend in a direction intersecting with an airflow direction. The protrusions are arranged in the airflow direction. | 11-14-2013 |
20130306285 | HEAT EXCHANGER AND AIR CONDITIONER - A first header collecting pipe is divided into an upper space corresponding to an upper heat exchange region and a lower space corresponding to a lower heat exchange region. The lower space is divided into a plurality of communication spaces corresponding respectively to auxiliary heat exchange parts of the lower heat exchange region. A second header collecting pipe is divided into a communication space corresponding to both of a first main heat exchange part and the third auxiliary heat exchange part, and into communication spaces corresponding respectively to other main heat exchange parts and the other auxiliary heat exchange parts. Each of pairs of communication space and communication space is connected to an associated one of communication pipes. | 11-21-2013 |
20130306286 | HEAT EXCHANGER AND AIR CONDITIONER - A heat exchanger ( | 11-21-2013 |
20150083377 | HEAT EXCHANGER - A heat exchanger includes a plurality of principal heat exchange sections and auxiliary heat exchange sections. Each of the auxiliary heat exchange sections is in series connection to a corresponding one of the principal heat exchange sections. Of tube number ratios of the number of the flat tubes constituting each of the heat exchange sections to the number of the flat tubes constituting a corresponding one of the auxiliary heat exchange sections, the first principal heat exchange sections which is the lowermost one has the smallest tube number ratio. Consequently, discharge of liquid refrigerant from a lower portion of the first principal heat exchange section is accelerated during defrosting, thereby shortening the time required for defrosting. | 03-26-2015 |