KR20020002099A - A heating control device and method of air conditioner - Google Patents

Abstract

PURPOSE: An apparatus and method is provided to prevent deterioration of performance of heating operation in a cold area by allowing the hot start temperature and release temperature to be changed by operating the temperature set switch unit. CONSTITUTION: An apparatus comprises an indoor pipeline temperature sensing unit(60) installed inside of an indoor unit, and which senses the temperature of the indoor pipeline and generates a pipeline temperature sensed signal; a temperature set switch unit(70) for allowing the hot start temperature and release temperature to be changed in multiple stages within a preset range, when the switch unit is pressed by a user in consideration of the temperature characteristics of the space where the air conditioner is installed; a control unit(80) for comparing the pipeline temperature sensed by the indoor pipeline temperature sensing unit and the hot start temperature and release temperature set by the temperature set switch unit, and generating an indoor fan driving/stop signal in accordance with the result of the comparison; and an indoor fan driving unit(90) for driving/stopping the indoor fan in accordance with the indoor fan driving/stop signal output from the control unit.

Description

Heating control device and method of an air conditioner {A heating control device and method of air conditioner}

The present invention relates to an air conditioner, and in particular, when the heat exchanger is not sufficiently heated during the heating operation of the air conditioner, the indoor fan is stopped to prevent discharge of cold wind in the room, and when the heat exchanger is sufficiently heated, the indoor fan is driven. The present invention relates to a heating operation control apparatus and method for an air conditioner to supply a warm wind to an indoor side.

In general, an air conditioner is installed for heating, cooling, or air purifying the room or purifying the air to create a more comfortable indoor environment for humans.

1 is a block diagram of a heating operation control apparatus of an air conditioner according to the prior art, Figure 2 is a flow chart of a heating operation control method of the air conditioner according to the prior art.

The conventional heating operation control apparatus of the air conditioner is installed in the indoor unit of the air conditioner to detect the pipe temperature and output the pipe temperature detection signal to generate a pipe temperature detection signal, and the indoor pipe temperature detection unit 10 Control unit 20 and the control unit 20 for comparing the detected pipe temperature and the predetermined hot start operation inrush temperature and release temperature when manufacturing the air conditioner to generate and output the indoor fan start / stop signal according to the comparison result It is configured to include an indoor fan drive unit 30 for driving / stopping the indoor fan 32 by the indoor fan drive / stop signal transmitted from).

When the conventional heating operation control device configured as described above describes the heating operation of the air conditioner equipped with the device is a heating operation key provided in the operation control unit (not shown) or the remote control 2 formed on one side of the air conditioner ( When the controller 20 is pressed, the control unit 20 transmits a drive signal to the compressor driver 40 until the pipe temperature in the air conditioner reaches the hot start release temperature to drive the compressor 42 to heat exchanger (not shown). Let the temperature of h) rise.

At this time, the indoor fan 32 is driven to stop the hot start operation to prevent the cold wind is discharged to the indoor side. (S1, S2)

Since the compressor 42 continues to be driven and the indoor fan 32 is in a driving stop state, the pipe temperature of the heat exchanger continues to rise. When the pipe temperature becomes higher than the hot start release temperature, the indoor fan 32 is driven. Warm wind is discharged into the room. (S3)

The pipe temperature is lowered by the driving of the indoor fan 32, and when the pipe temperature reaches the hot start inrush temperature or less, the driving of the indoor fan is stopped to prevent the discharge of cold air into the room. (S4, S5)

That is, by driving and stopping the indoor fan 32 as described above, in a state in which the heat exchanger (not shown) installed in the air conditioner is not sufficiently heated, air is prevented from being discharged to the indoor side, and only warm air is indoors. To be discharged.

However, since the heating operation control device and method of the conventional air conditioner have a hot start inrush temperature and a release temperature fixed at a predetermined value at the time of manufacturing the air conditioner, the pipe temperature frequently reaches a hot start inrush temperature in cold regions. Frequent hot start operation, there is a problem that the heating operation rate is lowered accordingly to prevent proper heating operation.

The present invention has been made to solve the problems of the prior art, it is possible to change the hot start inrush temperature and the release temperature can be prevented from lowering the heating operation rate due to frequent hot start operation in cold regions It is an object of the present invention to provide a heating operation control apparatus and method for an air conditioner that allows the air conditioner to operate in accordance with the temperature characteristics of the place where the air conditioner is installed.

1 is a block diagram of a heating operation control apparatus of an air conditioner according to the prior art,

2 is a flow chart of a heating operation control method of an air conditioner according to the prior art,

3 is a block diagram of a heating operation control apparatus of an air conditioner according to the present invention;

Figure 4 is a flow chart of the heating operation control method of the air conditioner according to the present invention.

<Explanation of symbols on main parts of the drawings>

52: remote control 60: temperature sensor

70: temperature setting switch unit 80: control unit

90: indoor fan drive unit 92: indoor fan

102: compressor

The hot start operation apparatus according to the present invention for solving the above problems is installed in the indoor unit during the heating operation of the air conditioner, the indoor piping temperature detection unit for detecting the pipe temperature to generate a pipe temperature detection signal and output, and air conditioning The temperature at which the hot start operation inrush and release temperatures, which are the criteria for determining whether the air conditioner's indoor fan is driven, are changed step by step within the set range when the user presses the controller in consideration of the temperature characteristics of the place where the equipment is installed. Controls the setting switch unit and the pipe temperature detected by the indoor pipe temperature sensing unit and the hot start operation inrush temperature and the release temperature set by the temperature setting switch unit to generate and output an indoor fan driving / stop signal according to the comparison result. An indoor fan which drives / stops the indoor fan by an imposition, an indoor fan driving / stop signal of the controller It is characterized by consisting of a drive unit.

In addition, the hot start operation method according to the present invention is changed stepwise by the number of presses when the user presses the hot start temperature change switch to change the hot start operation inrush temperature and the release temperature according to the temperature characteristics of the place where the air conditioner is installed The hot start temperature setting step in which the hot start operation inrush temperature and the release temperature are set, and the indoor unit piping temperature of the air conditioner are continuously sensed, and the detection result and the hot start reference temperature are compared to each other, thereby driving / stopping the indoor fan. An indoor fan drive determination step of determining a, and an indoor fan drive step of driving / stopping the indoor fan according to the drive determination step of the indoor fan.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram of a heating operation control apparatus of the air conditioner according to the present invention, Figure 4 is a flow chart of the heating operation control method of the air conditioner according to the present invention.

The heating operation control device of the air conditioner according to the present invention is installed in the indoor unit during the heating operation of the air conditioner is installed in the indoor unit temperature sensing unit 60 to detect the pipe temperature to generate a pipe temperature detection signal and output, and air conditioning The temperature at which the hot start operation inrush and release temperatures, which are the criteria for determining whether the air conditioner's indoor fan is driven, are changed step by step within the set range when the user presses the controller in consideration of the temperature characteristics of the place where the equipment is installed. Comparing the setting switch unit 70 with the pipe temperature detected by the indoor pipe temperature sensing unit and the hot start inrush temperature and the release temperature set by the temperature setting switch unit, the indoor fan driving / stop signal is generated according to the comparison result. A control unit 80 for outputting and an indoor fan sphere for driving / stopping the indoor fan 92 by the indoor fan driving / stop signal of the control unit. It consists of a part 90.

The temperature setting switch unit 70 includes a pull-up resistor (not shown) connected to a power source, a hot start temperature change switch (not shown) installed in a driving control unit or a remote controller of an air conditioner to facilitate a user's pressing operation, and an overcurrent It consists of a current limiting resistor (not shown) for limiting the output of the signal corresponding to the number of pressing when the user presses the hot start temperature change switch.

When the user presses the hot start temperature change switch, the control unit 80 applies the hot start inrush temperature / release temperature corresponding to the number of pressing times from the indoor pipe temperature sensing unit 60 as shown in Table 1. Determine whether the hot start operation is to be started or released compared to the pipe temperature.

Hot start operation inrush and release temperature change table Hot Start Temperature Change Switch Press Count Hot Start Inrush Temperature (T1) Hot Start Disable Temperature (T2) 0 times (default) t ₁ t ₂ 1 time t ₁ -2 t ₂ -2 Episode 2 t ₁ -3 t ₂ -3 3rd time t ₁ -4 t ₂ -4 4 times t ₁ -5 t ₂ -5 default t ₁ t ₂

Referring to the operation of the heating operation control device of the air conditioner of the present invention configured as described above are as follows.

When the heating operation of the air conditioner starts, the compressor 102 installed in the air conditioner is driven, and the indoor pipe temperature detection unit 60 periodically outputs a pipe temperature detection signal. The controller 80 determines whether there is a pressing operation of the hot start temperature change switch, and if there is no pressing operation, compares the initial hot start operation inrush temperature t ₁ ° C and the hot start operation release temperature t ₂ ° C with the piping temperature. If there is a pressing operation of the hot start temperature change switch, the hot start inrush temperature T1 / release temperature T2 shown in Table 1 is checked according to the number of presses.

That is, if there is no user pressing operation of the hot start temperature change switch, the hot start inrush temperature T1 is set to t ₁ ° C, and the hot start release temperature T2 is set to t ₂ ° C. The control unit 80 outputs an indoor fan driving signal to the indoor fan driving unit 90 when the pipe temperature detected by the indoor pipe temperature detecting unit 60 becomes t ₂ ° C. or more, so that warm wind is discharged to the indoor side. (S13, S14) And, if the pipe temperature is less than t ₁ ℃ outputs the indoor fan drive stop signal to the indoor fan drive unit 90 to prevent cold air is discharged to the indoor side. (S15, S16)

When the user presses the hot start temperature change switch 74 once, the hot start inrush temperature T1 is changed to t ₁ -2 ° C, and the hot start release temperature T2 is changed to t ₂ -2 ° C. The control unit 80 sends an indoor fan drive signal to the indoor fan drive unit 90 when the pipe temperature periodically detected by the indoor pipe temperature detection unit 60 reaches or exceeds a hot start release temperature t ₂ -2 ° C. And outputs the warm wind to the indoor side (S13, S14). When the pipe temperature is changed to t ₁ -2 ° C or lower, which is a changed hot start inrush temperature, the indoor fan driving stop signal is sent to the indoor fan driving unit 90. The output prevents cold wind from being discharged to the indoor side. (S15, S16)

In addition, when the user presses the hot start temperature change switch twice, the hot start inrush temperature is changed to t ₁ -3 ° C, and the hot start inrush temperature is changed to t ₂ -3 ° C. The control unit 80 outputs an indoor fan driving signal to the indoor fan driving unit 90 when the pipe temperature is changed to a hot start release temperature t ₂ -3 ° C. or higher so that warm wind is discharged to the indoor side. S14) When the pipe temperature is changed to less than or equal to the set hot start inrush temperature t ₁ -3 ° C. or less, an indoor fan driving stop signal is output to the indoor fan driving unit 90 to prevent cold air from being discharged to the indoor side. (S15, S16)

When the hot start temperature change switch is pressed three or four times, the hot start inrush temperature T1 and the release temperature T2 are changed as shown in Table 1, respectively, so that the first and second pressing operations are performed. As described above, the indoor fan driving signal and the indoor fan driving stop signal are output to the indoor fan driving unit 90.

Then, when the user keeps pressing the temperature setting switch, the hot start inrush temperature T1 is set to t ₁ ° C as in the case where there is no pressing operation of the temperature setting switch 74, and the hot start release temperature T2 is t ₂ is set respectively.

Hot start operation method according to the present invention when the user presses the hot start temperature change switch to change the hot start operation inrush temperature (T1) and release temperature (T2) according to the temperature characteristics of the place where the air conditioner is installed, the number of pressing Hot start temperature setting step in which the hot start operation inrush temperature T1 and the release temperature T2 changed step by step and continuously detect the indoor unit piping temperature of the air conditioner to detect the result and the hot start operation initiation The indoor fan driving determination step of determining whether to drive / stop the indoor fan 92 by comparing the temperature T1 and the release temperature T2 with each other, and the indoor fan 92 according to the driving determination step of the indoor fan 92. ) Is an indoor fan driving step of driving / stopping.

In the step of setting the reference temperature, if the user does not press the hot start temperature change switch provided in the cabinet (not shown) or the remote controller 52 of the air conditioner, the hot start inrush temperature is set to t ₁ ℃ and the hot start release temperature is t ₂ ° C, and when the user presses the hot start temperature change switch, as shown in Table 1, the hot start inrush temperature T1 is t ₁ -2 ° C and t ₁ -3 ° C , t ₁ -4 ° C, t ₁ -5 ° C, and the hot start release temperature (T2) is changed to t ₂ -2 ° C, t ₂ -3 ° C, t ₂ -4 ° C, t ₂ -5 ° C do.

The indoor fan driving determination step may be performed by comparing the pipe temperature of the indoor unit with the hot start operation release temperature (T2) or more, and when the indoor unit piping temperature is determined to be equal to or higher than the hot start operation release temperature, the hot start operation release for determining the operation of the indoor fan. Comprising the determination step and whether the indoor unit piping temperature is equal to or less than the hot start inrush temperature (T1), and when the indoor unit piping temperature is determined to be less than or equal to the hot start inrush temperature, it consists of a hot start operation inrush determining step for determining the operation stop of the indoor fan. do.

Referring to the operation of the present invention configured as described above are as follows.

First, when the hot start temperature change switch is pressed to change the hot start inrush temperature (T1) and the release temperature (T2) according to the temperature characteristic of the place where the air conditioner is installed, the hot start inrush temperature (T1) and the release temperature (T2) are The number of presses is changed as shown in Table 1 above (S11, S12).

The indoor fan 92 is stopped until the pipe temperature reaches the changed hot start release temperature T2. When the pipe temperature reaches the hot start release temperature T2, the indoor fan is driven to warm the indoor air. To be discharged to the side (S13, S14).

In addition, when the pipe temperature reaches the hot start inrush temperature T1, the indoor fan is stopped. (S15, S16)

The temperatures t ₁ ° C and t ₂ ° C, which are the standards for the hot start operation inrush temperature and the hot start operation release temperature, are temperatures that can be arbitrarily set at the time of manufacturing the air conditioner, Variable temperature t ₁ -2 ° C, t ₁ -3 ° C, t ₁ -4 ° C, t ₁ -5 ° C, t ₂ -2 ° C, t ₂ -3 ° C, t ₂ -4 ° C, t ₂ -5 ° C It is also not to be set sequentially, the temperature is arbitrarily set to match the climatic conditions of the place where the air conditioner will be installed.

That is, when t ₁ ° C is set to 26 and t ₂ ° C is set to 28, the hot start inrush temperature T1 is 26 ° C, 24 ° C, 23 ° C, according to the number of presses of the hot start operating temperature change switch. It is sequentially changed to 22 ° C, 21 ° C, and the hot start release temperature T2 is changed to 28 ° C, 26 ° C, 25 ° C, 24 ° C, and 23 ° C, respectively.

As described above, the user may press the hot start temperature change switch before starting the heating operation to determine whether the indoor fan 92 is driven based on the changed hot start inrush temperature T1 and the release temperature T2. The hot start inrush temperature T1 and the release temperature T2 may be changed according to the number of times of pressing by pressing the hot start temperature change switch during the heating operation of the conditioner to determine whether the indoor fan 92 is driven. .

The hot start operating apparatus of the present invention configured as described above includes a temperature setting switch unit so that the hot start inrush temperature and the release temperature can be changed according to the number of presses of the user. Since the release temperature can be lowered, the heating operation rate can be prevented from being lowered due to frequent hot start operation.

In addition, the hot start operation method of the present invention configured as described above has the effect that it is possible to change the hot start reference temperature to perform the heating operation according to the temperature characteristics of the place where the air conditioner is installed.

Claims (4)

It is installed in the indoor unit during heating operation of the air conditioner to detect the pipe temperature and generate a pipe temperature detection signal, and to allow the user to operate by considering the temperature characteristics of the place where the air conditioner is installed. And a temperature setting switch unit for changing the hot start operation inrush temperature and the release temperature step by step within the setting range, which are the criteria for determining whether the indoor fan of the air conditioner is driven, and the pipe temperature detected by the indoor pipe temperature sensing unit. And a control unit which compares the hot start operation inrush temperature and the release temperature set by the temperature setting switch unit and generates and outputs an indoor fan driving / stop signal according to the comparison result, and controls the indoor fan by the indoor fan driving / stop signal of the controller. Heating operation control of the air conditioner, characterized in that consisting of the indoor fan drive unit for driving / stopping Value. When the user presses the hot start temperature change switch so that the hot start operation inrush temperature and the release temperature are changed according to the temperature characteristic of the place where the air conditioner is installed, the hot start operation inrush temperature and the release temperature that are gradually changed by the number of presses are set. The indoor fan drive which determines the operation / stop of the indoor fan by continuously detecting the hot start temperature setting step and the indoor unit piping temperature of the air conditioner and comparing the detected result with the hot start inrush temperature and the release temperature. And an indoor fan driving step of driving / stopping an indoor fan according to the determining step and the driving determining step of the indoor fan. The method of claim 2, In the hot start temperature setting step, if the user does not press the hot start temperature setting switch, the hot start operation inrush temperature is set to t ₁ ° C and the hot start operation release temperature is set to t ₂ ° C. When the change switch is pressed once, the hot start inrush temperature is set to t ₁ -2 ° C and the hot start operation release temperature is set to t ₂ -2 ° C. When the user presses the hot start temperature change switch twice, The hot start operation inrush temperature is set to t ₁ -3 ° C and the hot start operation release temperature is set to t ₂ -3 ° C. When the user presses the hot start temperature change switch three times, the hot start operation inrush temperature is t. ₁ is set to -4 ℃ is released hot start operating temperature is set to t ₂ -4 ℃, when the user presses four times the hot start temperature changing switch the hot start I inrush temperature is set to t ₁ -5 ℃ and heating operation control method of a hot-start operation release temperature of the air conditioner characterized by a set to t ₂ -5 ℃ doeeojim group. The method of claim 2, The indoor fan driving determination step may include: a hot start operation canceling determining step of determining whether the indoor fan is driven when the indoor unit piping temperature is determined to be equal to or higher than the hot start operating release temperature by comparing whether the piping temperature of the indoor unit is equal to or higher than the hot start operating release temperature; And comparing the indoor unit piping temperature to the hot start operation inrush temperature or less, and when the indoor unit piping temperature is determined to be below the hot start operation inrush temperature, an air conditioning system comprising a hot start operation inrush determination step of determining the operation stop of the indoor fan. How to control heating operation of the machine.