JP2008138958A - Air conditioner - Google Patents

Abstract

A convenient air conditioner capable of performing silent operation at any time is provided.
A silent system comprising a compressor 22 and air blowers 26 and 27, wherein the rotational speed of the compressor 22 and air blowers 26 and 27 is suppressed to a predetermined frequency or less by a signal from a remote control device operated by a user. It can be operated arbitrarily, and when the user prioritizes quietness over the air conditioning performance in the operation state of the air conditioner, the user can perform silent operation at any time, which is convenient for use.
[Selection] Figure 1

Description

  The present invention relates to an air conditioner, and particularly to a control operation during operation.

  A conventional air conditioner of this type includes a compressor, an outdoor heat exchanger, a pressure reducing mechanism, and an indoor heat exchanger in a refrigerant circuit, and is configured to circulate the refrigerant in the refrigerant circuit by driving the compressor. Has been. And an indoor heat exchanger and an outdoor heat exchanger are functioned as an evaporator and a condenser, respectively, so that air conditioning operation can be performed and the operation can be controlled by a remote controller.

In the conventional air conditioner having such a configuration, there is a control that regulates the operation frequency in order to obtain a silent effect during heating operation, and the room temperature is close to a set temperature arbitrarily set by the user. A method of performing a control operation is known (for example, see Patent Document 1).
JP 2005-147504 A

  However, in the configuration of the conventional air conditioner described above, in the control for the purpose of the above-described silent operation, even if it is most important for the user to be silent, the room temperature does not approach the set temperature to some extent, A phenomenon that does not shift to silent operation occurs. Considering the location of housing in recent years, in densely populated areas such as urban areas, there are many users who place emphasis on the influence of noise on their neighbors, and there are voices that want silent operation at all times.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an air conditioner that can always perform a silent operation in accordance with a user's intention.

  In order to solve the above-described conventional problems, the air conditioner of the present invention is capable of cooling and heating operation, includes a compressor, and can arbitrarily perform a silent operation in which the operation frequency of the compressor is suppressed to a predetermined frequency or less. Therefore, when the user prioritizes quietness over the air-conditioning performance in the operation state of the air conditioner, the user can perform silent operation at any time, which is convenient for use.

  The air conditioner of the present invention is excellent in convenience because the user can select the silent operation at any time when the user needs a quiet operating environment of the air conditioner.

  The first invention is capable of air-conditioning operation, includes a compressor, and can arbitrarily perform a silent operation in which the operation frequency of the compressor is suppressed to a predetermined frequency or less. Since quiet operation can be performed at any time when quietness is given priority over air conditioning performance, it is easy to use.

  According to a second aspect of the invention, in particular, the air conditioner of the first aspect comprises an indoor unit and an outdoor unit, and includes a remote control device for remotely controlling the operation of the air conditioner, and the silent operation is selected by the remote control device. When the signal is transmitted to the indoor unit, the silent operation is performed, and the operability of the silent operation of the air conditioner is improved and the convenience of the user is improved.

  In particular, the third invention cancels the silent operation when the release signal is transmitted from the remote control device to the indoor unit after the silent operation is selected by the remote control device of the second invention. Since the user's housing situation does not change frequently, once the silent operation is selected, the silent operation is performed every time the operation is performed unless there is a release signal, so the user selects the silent operation for each operation. This eliminates unnecessary operations, reduces unnecessary operations, and improves user convenience.

  The fourth aspect of the invention suppresses the rotation speed of the indoor fan built in the indoor unit below a predetermined rotation speed, particularly when performing silent operation during the heating operation of the second or third air conditioner. It can prevent that the heat exchanger piping temperature of an indoor unit falls and the feeling of warm air becomes poor by the restriction | limiting of the operating frequency of the compressor at the time of a quiet operation.

  In the fifth aspect of the invention, in particular, the air conditioner of any one of the first to fourth aspects of the present invention includes an expansion valve, and when performing silent operation during heating operation, the opening amount of the expansion valve is equal to or less than a predetermined opening amount. Therefore, it is possible to prevent the heat exchanger piping temperature of the indoor unit from being lowered and the feeling of hot air from becoming poor due to the restriction of the operating frequency of the compressor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a diagram showing a configuration example of an air conditioner according to the first embodiment of the present invention, and FIG. 2 is a flowchart showing a forced cooling operation control method of the air conditioner.

  In FIG. 1, the air conditioner in this Embodiment is comprised from the outdoor unit 18 installed in the outdoor, and the indoor unit 19 installed indoors. The outdoor unit 18 includes the outdoor heat exchanger 21, the compressor, 22, a four-way valve 25, an expansion valve 23, and an outdoor fan 27, and the indoor unit 19 includes an indoor heat exchanger 24 and an indoor fan 26, an outdoor heat exchanger 21, a compressor 22, an expansion valve 23, The indoor heat exchanger 24 and the four-way valve 25 are connected in one system.

  And heat exchange is performed by the wind generated by the indoor blower 26 and the outdoor blower 27, and the air conditioning operation becomes possible. Various control signals necessary for operating the air conditioner, such as the operating frequency of the compressor 22 and the rotational speed of the indoor fan 26 and the outdoor fan 27 at this time, are determined by the control unit 28. Moreover, various operation modes can be transmitted to the control unit 28 by the remote operation device 29, and the operation state of the air conditioner can be remotely controlled.

  When the silent operation mode is selected by the remote operation device 29 and the silent mode signal is transmitted to the control unit 28 built in the indoor unit 19, the operation frequency of the compressor 22 is suppressed to a predetermined frequency or less in consideration of silence. The silent operation mode is implemented.

  When the silent operation mode is selected by the remote operation device 29, the silent operation mode is canceled only when the release signal is transmitted to the control unit 28 by the remote operation device 29.

  When the silent operation mode is performed during the heating operation, the rotational speed of the indoor blower 26 is suppressed to a predetermined rotational speed or less in order to prevent a lack of warm air feeling due to a decrease in the frequency of the compressor 22.

  Further, when the silent operation mode is performed during the heating operation, the opening amount of the expansion valve 23 is suppressed to a predetermined opening or less in order to prevent lack of warm air feeling due to a decrease in the frequency of the compressor 22.

  In the above silent operation mode, a stop signal of the air conditioner is transmitted from the remote control device 29 to the control unit 28 during the silent operation mode, and when the operation is stopped, the operation is started in the silent operation mode when the next operation starts. Like to do.

  The flow of the series of operations will be described with reference to the flowchart of FIG.

  When a silent operation signal is received during normal operation (SP 1), the operation frequency of the compressor 22 is restricted to MAX AHz or less (SP 2). At this time, it is determined whether the operation mode is heating operation (SP 3 In the case of heating operation, the rotational speed of the indoor blower 26 is restricted to Br / min or less (SP 4), and the opening amount of the expansion valve 23 is restricted to Cpls or less (SP 5).

  The above operation is a series of operations in the silent operation mode. When the control unit 28 receives a stop signal during the silent operation (SP 6), the operation in the silent operation mode is performed when the next operation starts. It will start. When the silent operation stop signal is received during the silent operation (SP 7), the mode is changed to the normal operation mode.

  As described above, the air conditioner according to the present invention is easy to use because the user can perform silent operation at any time when the user prioritizes quietness over the air conditioning performance. Applicable to various air conditioners.

The block diagram of the indoor unit of the air conditioner in Embodiment 1 of this invention Flow chart showing a forced cooling operation control method of the air conditioner

Explanation of symbols

21 Outdoor Heat Exchanger 22 Compressor 23 Expansion Valve 24 Indoor Heat Exchanger 25 Four Way Valve 26 Indoor Blower 27 Outdoor Blower 28 Control Unit 29 Remote Control Device

Claims (5)

An air conditioner capable of air-conditioning operation, including a compressor, and capable of arbitrarily performing a silent operation in which an operation frequency of the compressor is suppressed to a predetermined frequency or less. It comprises an indoor unit and an outdoor unit, and includes a remote control device that remotely controls the operation of the air conditioner. When the silent operation is selected by the remote control device and a signal is transmitted to the indoor unit, the silent operation is performed. The air conditioner according to claim 1. The air conditioner according to claim 2, wherein after the silent operation is selected by the remote operation device, the silent operation is canceled when a release signal is transmitted from the remote operation device to the indoor unit. The air conditioner according to claim 2 or 3, wherein when performing silent operation during heating operation, the number of rotations of the indoor fan built in the indoor unit is suppressed to a predetermined number of rotations or less. The air conditioner according to any one of claims 1 to 4, further comprising an expansion valve, wherein when the silent operation is performed during the heating operation, an opening amount of the expansion valve is suppressed to a predetermined opening or less. .

Images