JPH07190459A - Operation controller of air conditioner - Google Patents

Abstract

PURPOSE:To always keep the temperature of a main body constant even though the output of a heater is in any state, by switching a pipe temperature control table to control the operating frequency of a compressor and the rotation speed of a fan motor. CONSTITUTION:When heating operation starts and a compressor begins rotating, the temperature of a heat exchanger of an indoor unit rises. Consequently, outputs of a heat exchanger temperature sensor which detects pipe temperature rises and the operating frequency of the compressor and the operating rotation speed of a fan motor are decided according to the outputs from the heat exchanger temperature sensor. When a heater operating controller 13 makes a heater output heat and a heater electric current detector 14 detects the output of the heater, a pipe temperature control tables is changed by a pipe temperature control table changeover device 16 according to the currents detected. Then, operation of the compressor and the fan motor is decided by a compressor operating frequency controller 17 and a fan motor operating rotation speed controller 18 according to the control table at that time, thus an air conditioner is put in operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having an auxiliary heater function in the blower circuit of an indoor unit,
By controlling the operating frequency of the compressor and the operating speed of the electric motor for blowing air according to the heater output,
The present invention relates to an operation control device for an air conditioner, which aims to improve the comfort of a person in a room by automatically preventing a temperature rise of a main body and performing a comfortable air conditioning operation.

[0002]

2. Description of the Related Art When a room temperature is controlled by an air conditioner, in the case of heating operation, the compressor operating frequency is controlled and the operating speed of an indoor blower motor is controlled in order to improve the characteristics. That is, FIG. 7 is a control table of the operating frequency of the compressor, and FIG. 8 is a control table of the operating speed of the indoor blower electric motor. As shown in FIG. 3, the temperature sensor attached to the heat exchanger of the indoor unit detects the pipe temperature of the heat exchanger, and the detected temperature causes operation according to the control tables shown in FIGS. The temperature is prevented from rising excessively and the safety is improved. At the same time, the blowing temperature is controlled to improve the characteristics.

[0003]

However, by providing the auxiliary heater function in the blower circuit of the indoor unit, the conventional control device described above has the same control whether the heater is energized or not. When operated on a table, the temperature of each part of the main body when the heater is energized becomes the temperature when the heat of the heater is added to the temperature when the heater is not energized. May damage the At the same time, the blowing temperature also becomes high, which hinders the improvement of the characteristics.

[0004]

In order to solve this problem, the present invention provides a heater operation control means, a heater current detection means for confirming the operation, and a sensor for detecting the pipe temperature of a heat exchanger in a room. Means and the sensor means, in order to protect the airframe and improve the comfort of the person in the room, a control table of the operating frequency for determining the compressor operating frequency of the air conditioner and the operating speed of the blower motor are determined. The operation of the air conditioner, which comprises: a pipe temperature control table switching means for switching a plurality of operating speed control tables for carrying out the above by the heater current; and a control signal generating means based on the control table. A control device is proposed.

[0005]

The operation of the above technical means is as follows.

According to the above-mentioned configuration of the present invention, the pipe temperature control table for generating the control signals for the operating frequency of the compressor and the operating speed of the blower motor is switched by the heater current detected by the heater current detecting means. As a result, the temperature of the main body can be kept constant regardless of the presence or absence of the heater output, and safety is impaired. Similarly, the blowing temperature is also kept constant, which deteriorates the characteristics. Absent.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are a perspective view and a cross-sectional view of an air conditioner indoor unit including a deodorizing device, respectively. In the figure, 1 is an auxiliary heater. Further, 2 is a heat exchanger, 3 is a blower, 4 is a suction part, 5 is a casing, and 6 is a blower electric motor. FIG. 3 is a configuration diagram of the air conditioner. In the figure, 7 is an indoor heat exchanger piping temperature sensor, 8 is an outdoor heat exchanger, 9 is a capillary tube, 10 is an outdoor blower, 11 is a compressor, and 12 is a blower electric motor. Further, FIG. 4 is a schematic block diagram of the air conditioner in the first embodiment of the present invention. Figure 4
In FIG. 3, 13 is heater operation control means, 14 is heater current detection means for detecting heater current, 15 is pipe temperature detection means for detecting indoor heat exchange temperature, and 16 is heater current switching means 14 and is pipe temperature detection means 15. Pipe temperature control switching means for switching the control table of the determined compressor operating frequency and operating speed of the blower motor, 17 is a compressor operating frequency control signal generating means for outputting a signal of the operating frequency of the compressor. Yes, 18 is a blower electric motor operating speed control signal generating means for outputting a signal of the operating speed of the blower. Further, FIG. 7 is a control table of the operating frequency of the compressor, and FIG. 8 is a control table of the operating speed of the blower motor.

The operation of the above arrangement will be described below. When the heating operation is started in the air conditioner, the pipe temperature sensor 7 also starts detecting the temperature of the heat exchanger, and when the operation of the compressor 11 is started, the temperature of the heat exchanger 2 in the indoor unit rises. To do. Along with this, the output of the heat exchange temperature sensor for detecting the pipe temperature also rises, and the output determines the operating frequency of the compressor 11 and the operating speed of the blower electric motor 12. There heater control means 1
When the heater output is given by 3 and is detected by the heater current detecting means 14, the pipe temperature control table switching means 16 switches the control table by the current. The compressor operation frequency control means 17 and the blower electric motor operation speed control signal means 18 determine the operation of the compressor and the blower electric motor according to the control table at that time, and the air conditioner is operated.

[0009]

As is apparent from the above embodiment, the present invention controls the compressor operating frequency and the blower prime mover operating speed by switching the pipe temperature control table according to the size of the heater output. Thereby, it is possible to always keep the main body temperature constant regardless of the heater output. By keeping the temperature of the main body constant in this way, the safety of the main body is ensured and the characteristics of the living environment are not impaired.

[Brief description of drawings]

FIG. 1 is a perspective view of an air conditioner indoor unit according to an embodiment of the present invention.

FIG. 2 is a sectional view of an air conditioner indoor unit configuration according to an embodiment of the present invention.

FIG. 3 is a configuration diagram of an air conditioner according to an embodiment of the present invention.

FIG. 4 is a schematic block diagram of an operation control device for an air conditioner according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a control table of a compressor operating frequency.

FIG. 6 is an explanatory diagram showing a control table of the operating speed of the blower motor.

FIG. 7 is an explanatory view showing a conventional control table of a compressor operating frequency.

FIG. 8 is an explanatory view showing a conventional control table of the operating speed of the blower motor.

[Explanation of symbols]

 1 Heater 2 Heat Exchanger 3 Blower 4 Suction Part 5 Casing 6 Underframe 7 Indoor Heat Exchanger Pipe Temperature Sensor 8 Outdoor Heat Exchanger 9 Capillary Tube 10 Outdoor Blower 11 Compressor 12 Blower Electric Motor 13 Heater Operation Control Means 14 Heater Current Detecting means 15 Piping temperature detecting means 16 Piping temperature control table switching means 17 Compressor operating frequency control signal generating means 18 Blower electric motor operating speed control signal generating means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsunori Axbayashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. An air conditioner having an auxiliary heater function in a blower circuit of an indoor unit, means for controlling the output of the heater, means for detecting the output, and piping for a heat exchanger of the indoor unit. A heater for detecting a temperature, and an operating frequency control table for determining the operating frequency of the compressor of the air conditioner based on the sensor means for preventing the temperature of the airframe from overheating and improving the comfort of people in the room. Control table switching means for switching according to output,
An operation control device for an air conditioner, comprising: means for generating and outputting a compressor operation frequency control signal. 2. A control table switch for switching the rotation speed control table for determining the operation speed of the blower electric motor of the indoor unit based on the heater output, means for controlling the heater output, heater output detection means, and sensor means. The operation control device for an air conditioner according to claim 1, further comprising means and means for generating and outputting an operation rotation speed control signal of the blower motor.