JPS62194149A - Capacity controller for compressor of air-conditioning machine - Google Patents

Abstract

PURPOSE:To make a controller of a single set and improve the value of product remarkably by inputting an operation signal and a cooling and heating switching signal into the capacity controller of a compressor for an air-conditioning machine. CONSTITUTION:The capacity controller 1 of a compressor for an air-conditioning machine is provided with an input converting unit 3, converting an operation signal input 9 and a cooling/heating switching signal 10, and a micro-computer unit 5. In the case of cooling operation, the operation signal input 9 (time chart 31) is put ON and the cooling/heating switching signal 10 (time chart 32) is put OFF. The micro-computer unit 5 compares a cool water temperature setter 7 with the input 13 of a temperature sensor 13. When the temperature sensor input value TW is larger than a cool water temperature set value TSC + control temperature width alpha, capacity increasing operation U is effected and a capacity-up output 15 is put ON periodically. In the case of heating operation, the cooling/heating switching signal input 10 (two-dotted chain line of time chart 32) is put ON and a comparison with the temperature sensor input value TW becomes a hot-water temperature set value TSH.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a capacity controller for a compressor used in an air conditioner.

[Background of the invention]

In general, improving the product value of mass-produced products such as air conditioners requires a balance between product performance and price.

Therefore, lowering the price while maintaining the performance as before does not only improve the product value, but also has the effect of increasing industrial demand.

The capacity controller using the compressor capacity control mechanism used in conventional air conditioners did not have a cooling/heating switching control function, so two capacity controllers were required, one for cooling and one for heating. There was a problem that it became expensive and reduced the product value.

[Purpose of the invention]

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an entire capacity controller that performs capacity control and cooling/heating switching control using a capacity control mechanism of a compressor.

[Summary of the invention]

That is, the present invention provides an operation signal input and a cooling/heating switching signal input, an input converting section that converts these inputs, and a temperature sensor input that converts the temperature sensor input into voltage and inputs the input signal to the capacity controller of the compressor for an air conditioner. A temperature/voltage converter, a cold water temperature setting device, and a hot water temperature setting device are provided.

On the other hand, on the output side, an output section is provided for outputting compressor control output, capacity up output, and capacity down output.

Input the above input signal to the gold microcomputer unit, switch to cooling or heating, increase the capacity of the compressor,
This device is characterized in that all the operations of capacity hold operation, capacity down operation, external stop operation, and thermostat stop operation are performed.

Hereinafter, one embodiment of the present invention will be described in detail using FIGS. 1 and 2.

The capacity controller 1 of the compressor of the air conditioner is the entire controller vc
'r4> Power supply 2 that supplies pressure, operation signal human power 9, air conditioner/
An input converter 3 that converts the heating switching signal input 10, a temperature/voltage converter 4 that converts the signal of the temperature sensor input 13, C
Microcomputer unit 5 with built-in PU, clock, ROM, RAM, A/D converter, I10 buffer, compressor control output 14, capacity increase output 15,
It consists of an output section 6 that drives the capacity down output 16, a cold water temperature setter 7 that sets the cold water temperature, and a hot water temperature setter 8 that sets the hot water temperature.

In the case of cooling operation, the operation signal 9 (time chart 31) is turned on, the cooling/heating switching signal input 10 (time chart 32) is turned off, and the microcomputer unit 5 turns on the cold water temperature setting device 7. The temperature sensor input value TW is compared with the temperature sensor input 13, and the temperature sensor input value TW is
If it is larger than the chilled water temperature set value T8C, the compressor control output 14 (time chart 21) is turned on, if it is smaller than the chilled water temperature set value TSC - control temperature width α, it is turned off, and if it is in between, the previous state maintain.

After the power is turned on, if the temperature sensor input value TW is larger than the chilled water temperature set value TSC + reached temperature limit α, the capacity ap- plication operation UVC is not performed, and the compressor control output 14 (time chart 21
), turn on the capacity up output 15 (time chart 22
) is turned on periodically.

Next, the temperature sensor manual value TW is changed to the chilled water temperature set value TSC.
When the cold water temperature is between TSC and the control temperature range α, the capacity hold operation Nc occurs, the compressor control output 14 (time chart 21) remains on, and the capacity increase output 15 (time chart 22) , capacity down output 16 (time chart 23) are both turned on.

Next, the temperature sensor manual value TW is changed to the chilled water temperature set value TSC.
- When the control temperature range α is between the chilled water temperature set value Tsc, the capacity down operation DK is activated, the compressor control output 14 (time chart 21) remains on, and the capacity down output 1
6 (time chart 23) is turned on periodically.

Next, the temperature sensor input value TW is changed to the chilled water temperature set value TSC.
- Control temperature] When it becomes smaller than Mα, thermostatic stop operation 8
1, compressor control output 14 (time chart) 2
+ ), capacity up output) 5 (time chart 22),
The capacity down output 16 (time chart 23) is turned off.

Next, the temperature sensor manual value TW is changed to the chilled water temperature set value TSC.
When it becomes larger, the compressor side output 14 (time chart) 21) is turned on and the capacity hold operation N is performed.

Next, when the operation signal human power 9 (time chart 31) is turned off, the external stop operation SO and the thermostatic stop operation S1 are turned off.
Performs the same operation as .

In the case of heating operation, the difference from cooling operation is that the cooling/heating switching signal input 10 (time chart 3202 dotted line) is
The comparison between turning on and the temperature sensor input value TW is
For the hot water temperature set value TSHc, the temperature scale in FIG. 2 is reversed, and the operation is the same except for these points.

〔Effect of the invention〕

According to the present invention, in addition to the capacity control by the compressor capacity control mechanism, cooling/heating switching control can be performed, so what used to require two controllers can now be done with one controller. υ, we were able to significantly improve product value. Since two sensors become one, there is an effect that only one mounting location is required.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a capacity controller for a compressor of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a time chart of the input and output of FIG. 1... Air conditioner compressor capacity classification (goods) 2.
...Power supply 3...Input converter 4...Temperature/voltage converter 5...Microcomputer unit 6
...Output part 7...Cold water temperature setting device 8...
Hot water temperature setting device 9... Operation signal human power 10...
・Cooling/heating switching signal Human power 13... Temperature sensor input 14... Compressor control output 15... Capacity up output 16... Capacity down output 21... Compressor control output 22... Capacity up Output 23...Capacity down output 31...Operation signal human power 32...Cooling/heating switching signal input. 'r sc...Cold water temperature setting value '11' S
) (...Hot water temperature set value α...Control temperature range
TW...Temperature sensor input direct SO...External stop operation Sl...Nermo stop operation U...Capacity up operation N...Capacity hold operation D...Capacity down operation. ~

Claims (1)

[Claims] In a compressor capacity controller for an air conditioner including a compressor, a condenser, a pressure reduction device, and an evaporator, an input conversion unit that converts an operation signal input and a cooling/heating switching signal input;
Temperature sensor input and temperature/temperature sensor that converts this input signal to voltage
A voltage converter, a cold water temperature setting device, a hot water temperature setting device,
an output section that outputs compressor control output, capacity up output, and capacity down output, and switches to cooling or heating based on input from the input conversion section, temperature/voltage conversion section, and temperature setting value of cold water or hot water; A capacity controller for a compressor of an air conditioner, comprising a microcomputer unit that outputs compressor capacity up operation, capacity hold operation, capacity down operation, external stop operation, and thermostat stop operation.