JP2010190527A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems wherein, though temperature can be correctly displayed by operating an air blower even after a heating operation is stopped, a user feels strange as the fan is still moved even after the operation is stopped, and the user near an indoor unit feels cold even at a very low wind speed, and a problem of being affected in defrosting, in particular in a cold district, a defrosting time becomes long, and a problem wherein the temperature display is affected by the elongated time, and temperature lower than an actual indoor temperature is displayed. <P>SOLUTION: In this air conditioner in which a cycle is configured by connecting the indoor unit to an outdoor unit with a pipe, an indoor temperature detecting means for detecting temperature of an indoor unit side is disposed at a hull part or the external of the indoor unit. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner having a function of detecting a room temperature.

  In recent years, there are some which can display indoor and outdoor temperatures on a remote controller or an indoor unit main body. In order to detect the indoor temperature, an indoor temperature detection sensor is used. The indoor temperature detection sensor is mainly arranged on the windward side of a heat exchanger that is not affected by heat. However, after the heating operation is stopped or when the temperature setting is reached and the operation is temporarily stopped, the wind does not flow. .

  In Japanese Patent Laid-Open No. 2001-41553, the air blower is rotated even when the heating operation is stopped so that the indoor temperature detecting means is not affected by heat.

JP 2001-41553 A

  The display of the room temperature needs to be accurate because it plays an important role when the user decides the set temperature and knows the state of the room. Some users may compare it with a thermometer in the room.

  Even if heating operation is stopped, it is possible to make the temperature display accurate by turning the blower, but even if the operation is stopped, the fan is turned so that the user is still moving even though it is stopped I feel distrust. In addition, there is a problem that even if there is a small amount of wind speed, if you are close to the indoor unit, you will feel cold.

  In addition, the heating operation uses the heat condensed by the refrigerant in the indoor heat exchanger, but conversely, the outdoor heat exchanger is evaporated and absorbs heat to become a low temperature. Especially in cold regions, the outdoor heat exchanger becomes frosted. Since the heating capacity gradually decreases with the growth of frost, defrost control is performed. Defrosting is a cooling operation, so-called reverse cycle operation, in order to temporarily stop the heating operation and melt the frost on the outdoor heat exchanger. The high pressure gas compressed by the compressor melts the frost in the outdoor heat exchanger. At this time, the indoor heat exchanger conversely evaporates and absorbs heat, resulting in a low temperature. Therefore, since the indoor heat exchanger during defrosting is at a low temperature, the blower must be stopped to prevent cold air. The temperature display is also affected by this defrost. Especially in cold districts, the defrost time becomes longer, and the temperature display is affected by the longer time, resulting in a temperature lower than the actual room temperature.

  In order to solve the above problems, the present invention provides an air conditioner in which an indoor unit and an outdoor unit are connected by piping to form a cycle, and an indoor temperature detecting means for detecting the temperature on the indoor unit side is provided as an outer unit of the indoor unit. It is to be arranged in a part or outside.

  Another object of the present invention is to provide means for moving indoor temperature detection means provided on the air upstream side of the heat exchanger inside the indoor unit to the inside or outside of the indoor unit or to the outer part.

  Further, the room temperature detecting means is provided with a fixing means for disposing the outer temperature part or the outside.

  According to the present invention, the temperature display is the same as the actual indoor temperature without being affected by the heat of the indoor heat exchanger when the operation is stopped during the heating operation, during the temporary operation stop when the set temperature is reached, or during the defrost operation. be able to. Furthermore, it becomes possible to spread as a heater in cold districts.

The cycle block diagram in the Example of this invention. The external view of the indoor unit in the Example of this invention. The indoor unit sectional drawing in the Example of this invention. The external view of the indoor temperature detection sensor fixing component of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cycle configuration diagram in an embodiment of the present invention. The indoor unit 14 and the outdoor unit are separated from each other and connected by piping to constitute a cycle. In the heating operation, the refrigerant discharged from the compressor 1 of the outdoor unit passes through the four-way valve 2 and flows to the indoor heat exchanger 12 through the connection valve 7 and the connection valve 9. In the indoor heat exchanger 12, the air blower 13 is rotated so that the refrigerant changes from a high pressure gas state to a high pressure liquid state, and heat exchange is performed. Heating is performed with the condensation heat at this time. Next, the refrigerant flows through the connection valve 8 and the connection valve 6 to the outdoor unit. The high-pressure liquid refrigerant passes through the decompressor 5 and becomes low-pressure liquid refrigerant and flows to the outdoor heat exchanger 3. In the outdoor heat exchanger 3, heat is exchanged by turning the blower 4 so that the refrigerant changes from the low-pressure liquid refrigerant state to the low-pressure gas refrigerant state. And it returns to the compressor 1 through the four-way valve 2, and has become a repetitive cycle.

  Here, the indoor unit 14 includes an indoor temperature detection sensor 10 for displaying the indoor temperature, and is controlled by a control circuit 11 connected by a lead wire 15. The temperature display can be displayed on the remote control.

  The conventional room temperature detection sensor is installed on the windward side so as not to be affected by the heat of the indoor heat exchanger, but in the present invention, it is installed outside or outside the indoor unit.

  The effect of heat is that after the operation is stopped or when the set temperature is reached, the blower 13 is stopped by temporarily stopping the compressor 1, so that the heat of the indoor heat exchanger 12 stays in the indoor unit 14. It is to do.

  Further, in the heating operation, the outdoor heat exchanger 3 is frosted particularly in a cold region. Since the heating capacity gradually decreases as frost grows, defrost control is performed. The defrost is a cooling operation, that is, a so-called reverse cycle operation, for temporarily stopping the heating operation and melting the frost on the outdoor heat exchanger 3. The high-pressure gas compressed by the compressor 1 melts the frost in the outdoor heat exchanger 3. At this time, the indoor heat exchanger 12 conversely evaporates and absorbs heat to become a low temperature. Therefore, since the indoor heat exchanger 12 during defrosting is at a low temperature, the blower 13 must be stopped to prevent cold air. The temperature display is also affected by this defrost. Especially in cold districts, the defrost time becomes longer, and the temperature display is affected by the longer time and becomes lower than the actual room temperature.

  FIG. 2 is an external view of the indoor unit in the embodiment of the present invention. Other than that, a wall-hanging type can be similarly implemented. There is a control circuit 11 inside the indoor unit 14, and there is an indoor temperature detection sensor 10 connected thereto by a lead wire 15. The lead wire 15 is guided to the outside through the outlet 16 of the indoor unit 14. The installation location is not affected by heat depending on the situation. If it is the outer part of the indoor unit 14, the side surface is the best.

  FIG. 3 is a sectional view of the indoor unit in the embodiment of the present invention. As a blowing path, the air flows from the suction port 18 to the discharge port 19 through the windward space 17 and the blower 13 in front of the indoor heat exchanger 12.

  When the air conditioner is used in a place other than a cold region, it is difficult to be affected by defrosting. Arrange. When used in a cold region, the arrangement of the indoor temperature detection sensor 10 is determined according to the situation when the air conditioner is installed. For example, when the right side surface of the indoor unit 14 is a wall of the room, the indoor temperature detection sensor 10 is disposed on the right side surface of the indoor unit 14. Therefore, the lead wire 15 connecting the indoor temperature detection sensor 10 is made long so that it can be taken out of the indoor unit 14 in advance. By doing so, the placement location can be freely changed.

  FIG. 4 is an external view of a component for fixing the indoor temperature detection sensor 10 of the present invention. The indoor temperature detection sensor fixing component 20 is a component that can be fixed to the outer portion or the outside of the indoor unit 14.

DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4,13 Blower 5 Pressure reducer 6,7,8,9 Connection valve 10 Indoor temperature detection sensor 11 Control circuit 12 Indoor heat exchanger 14 Indoor unit 15 Lead wire 16 Outlet part 17 Upwind space 18 Suction port 19 Discharge port 20 Indoor temperature detection sensor fixing parts

Claims (3)

  An air characterized in that an indoor unit and an outdoor unit are connected by piping to form a cycle, and indoor temperature detection means for detecting the temperature on the indoor unit side is arranged outside or outside the indoor unit Harmony machine.   The air conditioner according to claim 1, further comprising means capable of moving the indoor temperature detection means provided on the air upstream side of the heat exchanger inside the indoor unit to the outside or the outside of the indoor unit.   The air conditioner according to claim 2, wherein the indoor temperature detecting means includes a fixing means for disposing at the outer shell or outside.

Images