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Multi-split air conditioner system, and air valve device and outdoor unit of multi-split air conditioner system

A multi-connected air conditioner and outdoor unit technology, applied in the field of air conditioners, can solve the problems of complex control, low high pressure, and it is difficult to meet the low temperature refrigeration of the multi-connected air-conditioning system, and achieves the effect of good compatibility and improved automation.

Active Publication Date: 2019-01-08
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the sake of system and motor reliability, the minimum speed of the fan should not be too low. At this time, due to the low ambient temperature and large heat transfer temperature difference, it is easy to cause low high pressure caused by excessive air volume of the external unit, resulting in system failure. run
In the existing multi-connected air-conditioning system, the outdoor unit usually has no air valve, which cannot control the air volume of the outdoor fan; while the existing air-conditioning air valve is usually based on the control logic of the air-conditioning control system, the control is complicated, the reliability is poor, and it is difficult to meet the requirements. Requirements for low-temperature refrigeration in multi-connected air-conditioning systems

Method used

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  • Multi-split air conditioner system, and air valve device and outdoor unit of multi-split air conditioner system
  • Multi-split air conditioner system, and air valve device and outdoor unit of multi-split air conditioner system
  • Multi-split air conditioner system, and air valve device and outdoor unit of multi-split air conditioner system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The controller includes: a relay 30 and a thermostat. Specifically, the relay 30 is electrically connected to the actuator 20, and is used to control the action of the actuator 20 according to its power on and off state; the temperature controller includes an acquisition module and a control module 43, and the acquisition module can acquire the ambient temperature and the outdoor temperature of the multi-connected air-conditioning system. The body temperature of the machine is sent to the control module 43, the control module 43 is electrically connected to the relay 30, and can control the power on and off of the relay 30 according to the ambient temperature and the temperature of the body.

[0068] The controller includes a relay 30 and a temperature controller. The temperature controller includes an acquisition module and a control module 43. The acquisition module can acquire the ambient temperature and the body temperature of the outdoor unit of the multi-connected ...

Embodiment 2

[0097] The difference from Embodiment 1 is that the body temperature is specifically the temperature at the refrigerant output pipe 72 of the outdoor unit, such as figure 2 shown.

[0098] When the multi-connected air conditioning system is in cooling operation, the temperature at the entrance of the outdoor heat exchanger of the outdoor unit and the refrigerant output pipe 72 (that is, the high-pressure liquid pipe of the outdoor unit) is relatively high, so by detecting the temperature at the entrance of the outdoor heat exchanger The temperature of the temperature and the temperature at the refrigerant output pipe 72 can accurately determine whether the machine is in the cooling operation mode, and combined with the ambient temperature, it can be determined whether the machine is in the low-temperature cooling condition. Since the damper device of the present application is mainly used to broaden the low-temperature refrigeration operating range of the multi-connected air-...

Embodiment 3

[0100] The difference from Embodiment 1 is that: the air supply port faces the horizontal direction, the rotating shaft is connected with one end of the air valve 10, and is located at the upper part of the air supply port, and the other end of the air valve 10 is suspended in the air, as image 3 shown.

[0101] The rotating shaft is connected with one end of the air valve 10 and is located at the upper part of the air supply port, and the other end of the air valve 10 is suspended in the air, so the other end of the air valve 10 can automatically rotate and fall without external force. Horizontal direction, so when the other end of the air valve 10 rotates and falls, the air valve 10 automatically switches to the closed position, the structure and principle are relatively simple and easy to implement.

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PUM

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Abstract

The invention provides a multi-split air conditioner system, and an air valve device and an outdoor unit of the multi-split air conditioner system. The air valve device comprises an air valve, an executer and a controller. The air valve can be arranged at the position of an air supply port of an outdoor draught fan of the multi-split air conditioner system and is used for adjusting the air supplyarea of the air supply port. The executer is connected with the air valve and used for controlling the air valve to be switched between the opening position and the closing position, and accordingly the air supply area of the air supply port can be adjusted. The controller is connected with the executer, is independent of a control system of the multi-split air conditioner system and is used for controlling the action of the executer. The air valve device can control the air volume of the outdoor draught fan, and the situation that under the low-temperature refrigeration work condition, due tothe too high air volume of the outdoor draught fan, the high pressure is relatively low, and consequently the system cannot normally run is avoided; and the actions of the air valve are controlled tobe conducted and not to be conducted through the executer, the actions of the executer are controlled through the controller, the controller is independent of the control system of the multi-split air conditioner system, accordingly, compatibility for existing systems is good, and system software upgrading is not needed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a multi-connected air conditioning system, a damper device and an outdoor unit thereof. Background technique [0002] At present, with the expansion of the operating range of the multi-connected air conditioning system, there is also a cooling demand under low temperature conditions. For the sake of system and motor reliability, the minimum speed of the fan should not be too low. At this time, due to the low ambient temperature and large heat transfer temperature difference, it is easy to cause low high pressure caused by excessive air volume of the external unit, resulting in system failure. run. In the existing multi-connected air-conditioning system, the outdoor unit usually has no air valve, which cannot control the air volume of the outdoor fan; while the existing air-conditioning air valve is usually based on the control logic of the air-conditioning control syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F1/38F24F11/89F24F11/74F24F11/70F24F110/12
CPCF24F1/38F24F11/70F24F11/74F24F11/89F24F2110/12
Inventor 杨国忠颜利波王命仁
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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