CN-115552181-B - Air conditioning device
Abstract
The air conditioner includes a compressor, an outdoor fan, and a control device that performs a fan intermittent operation in which the operation and the stop of the outdoor fan are repeated after the compressor is stopped, wherein the control device changes an upper stop limit time of the outdoor fan based on an operation time of the outdoor fan during the fan intermittent operation when the outdoor fan is in operation and there is no snow accumulated on the outdoor fan, stops the operation of the outdoor fan after the upper stop limit time of the outdoor fan is changed, and causes the outdoor fan to operate when the stop time of the outdoor fan exceeds the changed upper stop limit time.
Inventors
- WATARI KAZUYA
- ISHIMURA SHOHEI
- Wine well Rui Lang
Assignees
- 三菱电机株式会社
Dates
- Publication Date
- 20260512
- Application Date
- 20200514
Claims (8)
- 1. An air conditioning device is provided with: A compressor; outdoor fan, and A control device for repeating the operation of the outdoor fan and the intermittent operation of the stopped fan after the compressor is stopped, In the intermittent operation of the fan, the control device changes an upper stop limit time of the outdoor fan according to an operation time of the outdoor fan during the intermittent operation of the fan when the outdoor fan is in operation and snow is not accumulated on the outdoor fan, stops the operation of the outdoor fan after the upper stop limit time of the outdoor fan is changed, and causes the outdoor fan to operate when the stop time of the outdoor fan exceeds the changed upper stop limit time.
- 2. The air-conditioning apparatus according to claim 1, wherein, The air conditioning apparatus includes a timer that measures an operating time of the outdoor fan and a stop time of the outdoor fan during intermittent operation of the fan, The control device determines an upper limit stop time of the outdoor fan based on the operation time of the outdoor fan measured by the timer.
- 3. The air-conditioning apparatus according to claim 2, wherein, The control device determines the upper limit time of stopping the outdoor fan so that the shorter the operating time measured by the timer is, the longer the upper limit time of stopping the outdoor fan is.
- 4. An air conditioning unit as claimed in any one of claims 1 to 3, wherein, The air conditioner comprises a detection device for detecting the state of snow accumulated on the outdoor fan, The control device may continue the operation of the outdoor fan when it is determined that snow is accumulated on the outdoor fan based on the state of the snow accumulated on the outdoor fan during the intermittent operation of the fan detected by the detection device.
- 5. The air-conditioning apparatus according to claim 4, wherein, The detection means detects any one of the power consumption of the outdoor fan in operation, the current flowing through the outdoor fan, and the voltage applied to the outdoor fan.
- 6. The air-conditioning apparatus according to claim 5, wherein, The control means stops the outdoor fan when any one of the power consumption of the outdoor fan, the current flowing through the outdoor fan, and the voltage applied to the outdoor fan detected by the detection means is smaller than a threshold value.
- 7. The air-conditioning apparatus according to claim 6, wherein, The threshold value is set according to the rotation speed of the outdoor fan.
- 8. The air-conditioning apparatus according to claim 6, wherein, The threshold value is determined based on any 1 of the power consumption of the outdoor fan, the current flowing through the outdoor fan, and the voltage applied to the outdoor fan, which are detected by the detecting means when the compressor is operating.
Description
Air conditioning device Technical Field The present disclosure relates to an air conditioning apparatus that performs intermittent operation of a fan. Background In a heat pump type air conditioning apparatus, an outdoor unit including an outdoor fan and an outdoor heat exchanger is installed outdoors in order to introduce heat of air. When there is snowfall while the outdoor fan is stopped, if the amount of snow accumulated on the outdoor fan increases, the weight balance of the outdoor fan is lost. When the operation of the outdoor fan is restarted in this state, the outdoor fan may be damaged by contact with a surrounding structure such as a bell mouth. Further, snow accumulated in the outdoor fan freezes between the outdoor fan and the structure to generate icicles. When the operation of the outdoor fan is restarted, the outdoor fan may contact the icicles, and scratch and breakage of the outdoor fan may occur. Accordingly, there has been proposed a technique of intermittently operating a fan of an outdoor fan at a constant interval even when the operation of a compressor is stopped, thereby preventing snow from being accumulated on the outdoor fan (for example, refer to patent document 1). In the technique described in patent document 1, the air conditioning apparatus detects the outside air temperature, and performs intermittent operation of forcibly driving the outdoor fan at regular intervals when the outside air temperature is low. Prior art literature Patent literature Patent document 1 Japanese patent laid-open publication No. 2003-232557 Disclosure of Invention However, in the technique disclosed in patent document 1, even when the outdoor fan is free of snow and the fan is not required to be intermittently operated, the air conditioning apparatus always operates the outdoor fan at a constant interval when the outside air temperature is low. Therefore, the conventional air conditioner has a problem that the power for intermittently operating the outdoor fan after stopping the compressor is consumed. The present disclosure has been made in view of the above-described circumstances, and an object thereof is to provide an air conditioning apparatus capable of reducing power consumption for intermittent operation of a fan of an outdoor fan after a compressor is stopped. The disclosed air conditioning device is provided with a compressor, an outdoor fan, and a control device that performs a fan intermittent operation in which the operation and the stop of the outdoor fan are repeated after the compressor is stopped, wherein the control device changes the upper stop limit time of the outdoor fan in accordance with the operation time of the outdoor fan during the fan intermittent operation when the outdoor fan is in operation and there is no snow accumulated on the outdoor fan, and stops the operation of the outdoor fan after changing the upper stop limit time of the outdoor fan, and wherein the control device causes the outdoor fan to operate when the stop time of the outdoor fan exceeds the changed upper stop limit time. According to the present disclosure, when there is no snow accumulated on the outdoor fan, the control device changes the upper stop limit time of the outdoor fan according to the operation time of the outdoor fan during the intermittent operation of the fan, and stops the operation of the outdoor fan. The control device operates the outdoor fan when the stop time of the outdoor fan exceeds the changed stop upper limit time. Thus, the control device can lengthen the upper limit stop time of the outdoor fan when there is no snow, the operation time of the outdoor fan is short, and the possibility of breakage of the outdoor fan is low. Therefore, the power consumption of the air conditioning apparatus can be suppressed. Drawings Fig. 1 is a schematic diagram of an air conditioner according to embodiment 1 when the inside of an outdoor unit is viewed from the front. Fig. 2 is a diagram showing a configuration of a control system of the air conditioning apparatus according to embodiment 1. Fig. 3 is a flowchart for explaining operations before and after the intermittent operation of the fan of the air conditioner according to embodiment 1 is started. Fig. 4 is a flowchart showing an operation in intermittent operation of the fan of the air-conditioning apparatus according to embodiment 1. Fig. 5 is a diagram showing changes in the operating time and the stop time of the outdoor fan during intermittent operation of the fan of the air-conditioning apparatus according to embodiment 1. Fig. 6 is a diagram showing a configuration of a control system of the air conditioning apparatus according to embodiment 2. Fig. 7 is a flowchart showing an operation in intermittent operation of a fan of the air-conditioning apparatus according to embodiment 2. Fig. 8 is a diagram showing a configuration of a control system of the air conditioning apparatus according to embodiment 3. Fig. 9 is a flowchart sh