WO2018099108A1

WO2018099108A1 - Air conditioner and pipeline antifreeze control method and apparatus therefor

Info

Publication number: WO2018099108A1
Application number: PCT/CN2017/094319
Authority: WO
Inventors: 刘冰
Original assignee: 重庆美的通用制冷设备有限公司; 美的集团股份有限公司
Priority date: 2016-11-29
Filing date: 2017-07-25
Publication date: 2018-06-07
Also published as: CN106765889A

Abstract

An air conditioner pipeline antifreeze control method, the method comprising: acquiring a running state of a unit, and acquiring, in a shutdown state of the unit, a temperature parameter reflecting a water temperature in a pipeline; and when the temperature parameter is lower than a pre-set antifreeze temperature, turning on a water pump on the pipeline and an electric heater installed on the pipeline. Moreover, also provided are an air conditioner pipeline antifreeze control apparatus, an air conditioner comprising the control apparatus, and a non-transitory computer-readable storage medium storing a program of the air conditioner pipeline antifreeze control method. Where a unit is not used, a simple, safe and efficient method can be used to prevent the freezing of water in a pipeline due to too low a temperature, and to especially prevent the freezing and volume expansion of water in a heat exchanger from damaging the heat exchanger, etc.

Description

Air conditioner and pipeline antifreeze control method and device

Technical field

The invention relates to the technical field of air conditioners, in particular to an air conditioner and a pipeline anti-freezing control method and device thereof.

Background technique

In winter, air conditioning pipes are prone to freezing and freezing. There are many types of antifreeze measures that can be taken in the prior art, and can be selected according to the conditions that they have: one is to add glycol antifreeze in a proper proportion in the water supply system pipeline; Discharge completely.

In the above method, the following shortcomings and disadvantages exist: the user needs to add the antifreeze solution by himself, and the amount of the antifreeze solution is completely determined by the user's feeling; the user needs to manually drain the water of the system pipeline when not in use, and cannot ensure the management. The water is completely drained.

The above two methods are very inconvenient to implement, and manual manual adjustment is required. Manual manual adjustment for anti-freezing may result in failure to accurately and timely replace the adjustment logic and waste power, and energy saving cannot be achieved.

Summary of the invention

The technical problem to be solved by the present invention is to provide a method and a device for controlling the antifreeze of an air conditioner and a pipeline thereof in view of the deficiencies of the prior art. The invention realizes that in the case that the unit is not used, the method is simple, safe and efficient, and the water in the pipeline is frozen due to the temperature being too low, especially the water in the heat exchanger is frozen, the volume is expanded, and the damage is changed. Heater, etc.

The technical solution to solve the above technical problem is as follows: a method for controlling antifreeze of an air conditioning pipeline, comprising the following steps:

Obtaining the operating state of the air conditioning unit, and obtaining a temperature parameter reflecting the water temperature in the air conditioning pipeline when the air conditioning unit is in a shutdown state;

When the temperature parameter is lower than the preset antifreeze temperature, turn on the water pump and air conditioning pipeline on the air conditioning pipeline. Installed electric heater.

The invention has the beneficial effects that the anti-freeze control method for the air-conditioning pipeline provided by the invention realizes that when the unit is not used, the temperature parameter reflecting the water temperature in the pipeline is obtained, and when the temperature parameter is lower than the preset anti-freezing temperature, the temperature parameter is turned on. The water pump on the pipeline and the electric heater installed on the pipeline are used in a simple, safe and efficient manner to avoid water freezing in the pipeline due to too low temperature, especially the water in the heat exchanger is frozen and the volume is expanded. Damage to heat exchangers, etc.

Based on the above technical solutions, the present invention can also be improved as follows.

Further, the above technical solution further includes detecting whether the water flow switch is normally closed in real time, and if the water flow switch is normally closed, keeping the water pump and the electric heater turned on; if the water flow switch is not normally closed, controlling the water pump to be turned off, and keeping the electric heater turned on.

The beneficial effect of adopting the above further solution is that if the water flow switch is normally closed, it indicates that there is flowing water in the air conditioning pipeline, keeping the water pump and electric heating open, because the water is turned on, the water in the pipeline flows, and the flowing water is not easy to knot. Ice, plus the heating effect of the electric heater, makes the water in the pipeline rise evenly and quickly, ensuring the antifreeze effect; if the water flow switch is not closed normally, it indicates that the water flow is abnormal, there may be no running water in the pipeline, and the water pump cannot be turned on. The water in the pipeline flows, so the water pump is turned off, heated by the electric heater to achieve the purpose of thawing, while saving energy, waiting for the water flow switch to be normally closed, and then turning on the water pump.

Further, the technical solution further includes detecting the water temperature in the air conditioning pipeline in real time, and when the water temperature in the air conditioning pipeline is higher than the first preset temperature, controlling the water pump to be turned off, and keeping the electric heater turned on, wherein the first preset temperature Higher than the preset antifreeze temperature.

The beneficial effect of adopting the above further solution is that when it is detected that the water temperature in the air conditioning pipeline reaches the first preset temperature, the water pump needs to be turned off, and the water temperature is maintained by the electric heater to achieve energy saving and antifreeze effect.

Further, when the water temperature in the air conditioning pipeline is higher than the second preset temperature, the electric heater is controlled to be turned off, wherein the second preset temperature is higher than the first preset temperature.

The beneficial effect of adopting the above further solution is that when it is detected that the water temperature in the air conditioning pipeline reaches the second preset temperature, the possibility that the air conditioning pipeline freezes and freezes at this time is extremely small, and the electric heating device can be turned off to save energy. At the same time ensure the antifreeze effect.

Further, the temperature parameter includes any one of an ambient temperature, an influent temperature, and an outlet water temperature.

The beneficial effect of adopting the above further solution is that the ambient temperature, the inlet water temperature and the outlet water temperature can all reflect the water temperature state in the air conditioning pipeline, so that the detection method of the invention is flexible.

Another technical solution to solve the above technical problem is as follows: an air conditioning pipeline antifreeze control device, comprising:

The unit state detecting unit is configured to obtain an operating state of the air conditioning unit, and trigger a temperature parameter detecting unit when the air conditioning unit is in a stop state;

a temperature parameter detecting unit, configured to acquire a temperature parameter reflecting a water temperature in the air conditioning pipeline according to a trigger of the unit state detecting unit;

The control unit is configured to open the water pump on the air conditioning pipeline and the electric heater installed on the air conditioning pipeline when the temperature parameter is lower than the preset antifreeze temperature.

The invention has the beneficial effects that the anti-freeze control device for the air-conditioning pipeline provided by the invention realizes that the temperature parameter reflecting the water temperature in the pipeline is obtained when the unit is not used, and is turned on when the temperature parameter is lower than the preset anti-freezing temperature. The water pump on the pipeline and the electric heater installed on the pipeline are used in a simple, safe and efficient manner to avoid water freezing in the pipeline due to too low temperature, especially the water in the heat exchanger is frozen and the volume is expanded. Damage to heat exchangers, etc.

Further, the above technical solution further includes a water flow switch detecting unit, configured to detect whether the water flow switch is normally closed in real time;

The control unit is further configured to keep the water pump and the electric heater turned on when the water flow switch is normally closed; when the water flow switch is not normally closed, the control water pump is turned off, and the electric heater is kept turned on.

The beneficial effect of using the above further solution is that if the water flow switch is normally closed, it indicates that the pipeline is in the pipeline. There is flowing water, keep the water pump and electric heating open, because the water is turned on, the water in the pipeline flows, and the flowing water is not easy to freeze, and the heating of the electric heater makes the water in the pipeline rise evenly and rapidly. If the water flow switch is not closed normally, it indicates that the water flow is not normal, there may be no running water in the pipeline, and the water pump does not flow the water in the pipeline. Therefore, the water pump is turned off and heated by the electric heater to achieve the purpose of thawing. At the same time, energy is saved, and when the water flow switch is normally closed, the water pump is turned on.

Further, the above technical solution further includes a water temperature detecting unit for detecting the water temperature in the pipeline in real time;

The control unit is further configured to: when the water temperature in the air conditioning pipeline is higher than the first preset temperature, control the water pump to be turned off, and keep the electric heater turned on, wherein the first preset temperature is higher than the preset antifreeze temperature.

The beneficial effect of adopting the above further solution is that when the water temperature in the pipeline reaches the first preset temperature, the water pump is turned off, and the water temperature is maintained by the electric heater to realize energy saving and anti-freezing effect.

Further, when the water temperature detecting unit detects that the water temperature in the air conditioning pipeline is higher than the second preset temperature, the control unit is further configured to control the electric heater to be turned off, wherein the second preset temperature is higher than the first preset temperature.

The beneficial effect of adopting the above further solution is that when the temperature of the water in the pipeline reaches the second preset temperature, the possibility that the pipeline freezes and freezes at this time is extremely small, and the electric heating device can be turned off, thereby saving energy while ensuring Antifreeze effect.

The beneficial effect of adopting the above further solution is that the ambient temperature, the influent temperature and the outlet water temperature can all reflect the water temperature state in the pipeline, so that the detection method of the invention is flexible.

Another technical solution to solve the above technical problem is as follows: an air conditioner comprising the air conditioning pipeline antifreeze control device according to the above technical solution.

The invention has the beneficial effects that the air conditioner including the anti-freeze control device avoids freezing of water in the pipeline due to the temperature being too low, especially in the heat exchanger, and volume expansion. Damage to the heat exchanger, etc., prolonging the service life of the pipeline and prolonging the service life of the whole machine Life.

Furthermore, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the air conditioning line antifreeze control method described above.

The advantages of the additional aspects of the invention will be set forth in part in the description which follows.

DRAWINGS

1 is a flow chart of an anti-freeze control method for an air-conditioning pipeline according to an embodiment of the present invention;

2 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to another embodiment of the present invention;

3 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to another embodiment of the present invention;

4 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to another embodiment of the present invention;

FIG. 5 is a block diagram of an antifreeze control device for an air conditioning pipeline according to an embodiment of the present invention; FIG.

6 is a block diagram of an antifreeze control device for an air conditioning pipeline according to another embodiment of the present invention;

FIG. 7 is a block diagram of an antifreeze control device for an air conditioning pipeline according to another embodiment of the present invention.

detailed description

The principles and features of the present invention are described in the following with reference to the accompanying drawings.

FIG. 1 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to an embodiment of the present invention. As shown in FIG. 1 , an air conditioning pipeline antifreeze control method includes:

110. Obtain the operating state of the unit, and obtain a temperature parameter reflecting the water temperature in the pipeline when the unit is stopped.

Specifically, in this embodiment, the temperature parameter includes any one of an ambient temperature, an influent temperature, and an outlet water temperature. Such as detecting the ambient temperature. The ambient temperature, the inlet water temperature and the outlet water temperature can all reflect the water temperature state in the pipeline, so that the detection method of the invention is flexible.

120. When the temperature parameter is lower than the preset antifreeze temperature, open the water pump on the pipeline and the electric heater installed on the pipeline.

Specifically, in this embodiment, when the temperature parameter adopts the ambient temperature, when the ambient temperature is lower than the preset antifreeze temperature, the water pump on the pipeline and the electric heater installed on the management are opened. The preset antifreeze temperature can range from 0 °C to 10 °C. In this embodiment, it is possible to take 3 °C. In this embodiment, the electric heater can employ a heat exchanger heating device.

If the antifreeze effect is achieved only by adding a special electric heating device on the water system pipeline, only local temperature rise can be achieved, which is not conducive to the overall antifreeze of the water system, and the antifreeze effect is poor.

The anti-freeze control method for the air-conditioning pipeline provided in the above embodiment realizes that the temperature parameter reflecting the water temperature in the pipeline is obtained when the unit is not used, and the water pump on the pipeline is opened when the temperature parameter is lower than the preset anti-freezing temperature. The electric heater installed on the pipeline is used in a simple, safe and efficient manner to avoid water freezing in the pipeline due to too low temperature, especially the water in the heat exchanger is frozen, the volume is expanded, and the heat exchanger is damaged. .

In the above embodiment, the air conditioner manufacturer uniformly designs according to the characteristics of the unit, controls the quality of the parts, and formulates a unified control method to avoid manual freezing treatment and ensure the reliability of the water machine air conditioner; reasonable control logic Anti-freeze adjustment, accurate and timely replacement of adjustment logic to avoid wasting electricity, to achieve energy-saving purposes.

2 is a flow chart of an anti-freeze control method for an air-conditioning pipeline according to an embodiment of the present invention. As shown in FIG. 2, an air conditioning pipeline antifreeze control method includes:

210: Obtain the operating state of the unit, and obtain a temperature parameter reflecting the water temperature in the pipeline when the unit is stopped.

220. When the temperature parameter is lower than the preset antifreeze temperature, install the water pump and the pipeline on the pipeline. Electric heater.

230, real-time detection of whether the water flow switch is normally closed, if the water flow switch is normally closed, the water pump and the electric heater are kept open; if the water flow switch is not normally closed, the control water pump is turned off, and the electric heater is kept open.

The anti-freeze control method for the air-conditioning pipeline provided in the above embodiment, if the water flow switch is normally closed, indicating that there is flowing water in the pipeline, keeping the water pump and electric heating open, because the water is turned on, the water in the pipeline flows, and the flowing water It is not easy to freeze, and the heating effect of the electric heater makes the water in the pipeline rise evenly and quickly to ensure the antifreeze effect; if the water flow switch is not closed normally, it indicates that the water flow is abnormal, there may be no running water in the pipeline, and the water pump is turned on. It also does not allow the water in the pipeline to flow, so the water pump is turned off, heated by the electric heater to achieve the purpose of thawing, while saving energy, waiting for the water flow switch to be normally closed, and then turning on the water pump.

FIG. 3 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to an embodiment of the present invention. As shown in FIG. 3, an air conditioning pipeline antifreeze control method includes:

310. Obtain the operating state of the unit, and obtain a temperature parameter reflecting the water temperature in the pipeline when the unit is stopped.

320. When the temperature parameter is lower than the preset antifreeze temperature, open the water pump on the pipeline and the electric heater installed on the pipeline.

Specifically, in this embodiment, when the temperature parameter adopts the ambient temperature, when the ambient temperature is lower than the preset At the freezing temperature, open the water pump on the pipeline and manage the installed electric heater. The preset antifreeze temperature can range from 0 °C to 10 °C. In this embodiment, it is possible to take 3 °C. In this embodiment, the electric heater can employ a heat exchanger heating device.

330. Real-time detecting whether the water flow switch is normally closed. If the water flow switch is normally closed, the water pump and the electric heater are kept open; if the water flow switch is not normally closed, the control water pump is turned off, and the electric heater is kept turned on.

340. The water temperature in the pipeline is detected in real time. When the water temperature in the pipeline is higher than the first preset temperature, the water pump is controlled to be turned off, and the electric heater is kept turned on; wherein the first preset temperature is higher than the preset antifreeze temperature. In this embodiment, the first preset temperature may be 7 °C. In this embodiment, the temperature of the water in the pipeline may be detected by a temperature sensor disposed at the water inlet to detect the water temperature in the pipeline or the water temperature in the pipeline may be detected by a temperature sensor disposed at the outlet.

The anti-freeze control method for the air-conditioning pipeline provided in the above embodiment, when detecting that the water temperature in the pipeline reaches the first preset temperature, shuts off the water pump, and maintains the water temperature by heating the electric heater, thereby achieving energy saving and ensuring antifreeze. effect.

FIG. 4 is a flowchart of an anti-freeze control method for an air-conditioning pipeline according to an embodiment of the present invention. As shown in FIG. 4, an air conditioning pipeline antifreeze control method includes:

410, obtaining the operating state of the unit, and obtaining a temperature parameter reflecting the water temperature in the pipeline when the unit is stopped.

420. When the temperature parameter is lower than the preset antifreeze temperature, open the water pump on the pipeline and the electric heater installed on the pipeline.

Specifically, in this embodiment, when the temperature parameter adopts the ambient temperature, when the ambient temperature is lower than the preset antifreeze temperature, the water pump on the pipeline and the electric heater installed on the management are opened. Preset antifreeze temperature The value can range from 0 °C to 10 °C. In this embodiment, 5 ° C can be taken. In this embodiment, the electric heater can employ a heat exchanger heating device.

430, real-time detecting whether the water flow switch is normally closed, if the water flow switch is normally closed, keeping the water pump and the electric heater turned on; if the water flow switch is not normally closed, controlling the water pump to be turned off, keeping the electric heater turned on.

440. The water temperature in the pipeline is detected in real time. When the water temperature in the pipeline is higher than the first preset temperature, the water pump is controlled to be turned off, and the electric heater is kept turned on; wherein the first preset temperature is higher than the preset antifreeze temperature. In this embodiment, the first preset temperature may be 7 °C.

450. When the water temperature in the pipeline is higher than the second preset temperature, the electric heater is controlled to be turned off, wherein the second preset temperature is higher than the first preset temperature. In this embodiment, the second preset temperature may be 10 °C.

In this embodiment, the temperature of the water in the pipeline may be detected by a temperature sensor disposed at the water inlet to detect the water temperature in the pipeline or the water temperature in the pipeline may be detected by a temperature sensor disposed at the outlet.

The anti-freeze control method for the air-conditioning pipeline provided in the above embodiment, when detecting that the water temperature in the pipeline reaches the second preset temperature, the possibility that the pipeline freezes and freezes at this time is extremely small, and the electric heating device can be turned off, thereby saving The energy guarantees the antifreeze effect.

It should be noted that the temperature interval mentioned in the above embodiment is not limited to the temperature value in the example, and appropriate adjustment according to the actual use situation belongs to the protection scope of the present invention.

It should be understood that, in the embodiments of the present invention, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the execution order of each process should be determined by its function and internal logic, and should not be implemented in the embodiments of the present invention. The process constitutes any limitation.

FIG. 5 is a block diagram of an antifreeze control device for an air conditioning pipeline according to an embodiment of the present invention. As shown in FIG. 5, an air conditioning pipeline antifreeze control device includes:

The unit status detecting unit is used to obtain the operating status of the unit and trigger the temperature when the unit is stopped. Parameter monitoring unit.

The temperature parameter detecting unit is configured to obtain a temperature parameter reflecting the water temperature in the pipeline according to the trigger of the unit state detecting unit.

The control unit is configured to open the water pump on the pipeline and the electric heater installed on the pipeline when the temperature parameter is lower than the preset antifreeze temperature.

The anti-freeze control device for the air-conditioning pipeline provided in the above embodiment realizes that the temperature parameter reflecting the water temperature in the pipeline is obtained when the unit is not used, and the water pump on the pipeline is opened when the temperature parameter is lower than the preset anti-freeze temperature. The electric heater installed on the pipeline is used in a simple, safe and efficient manner to avoid water freezing in the pipeline due to too low temperature, especially the water in the heat exchanger is frozen, the volume is expanded, and the heat exchanger is damaged. .

Optionally, as an embodiment of the present invention, as shown in FIG. 6, the water flow switch detecting unit is further included on the basis of the foregoing embodiment, and is configured to detect whether the water flow switch is normally closed in real time; and the control unit is configured to be used in the water flow switch. When the valve is normally closed, keep the water pump and electric heater on; when the water flow switch is not normally closed, control the water pump to turn off and keep the electric heater on.

In this embodiment, if the water flow switch is normally closed, it indicates that there is flowing water in the pipeline, keeping the water pump and electric heating open, because the water is turned on, the water in the pipeline flows, and the flowing water is not easy to freeze, and the electricity is added. The heating effect of the heater makes the water in the pipeline rise evenly and quickly to ensure the antifreeze effect; if the water flow switch is not normally closed, it indicates that the water flow is abnormal, there may be no running water in the pipeline, and the water pump is not turned on. The water in the pipeline can be flowed, so the water pump is turned off, heated by the electric heater to achieve the purpose of thawing, and energy is saved, and the water pump is turned on when it is detected that the water flow switch is normally closed.

Optionally, as an embodiment of the present invention, as shown in FIG. 7, the water temperature detecting unit is further included in the foregoing embodiment for detecting water temperature in the pipeline in real time; and the control unit is used in the pipeline. When the water temperature is higher than the first preset temperature, the water pump is controlled to be turned off, and the electric heater is kept turned on; wherein the first preset temperature is higher than the preset antifreeze temperature. In this embodiment, the temperature of the water in the pipeline may be detected by a temperature sensor disposed at the water inlet to detect the water temperature in the pipeline or the water temperature in the pipeline may be detected by a temperature sensor disposed at the outlet.

In this embodiment, when it is detected that the water temperature in the pipeline reaches the first preset temperature, the water pump is turned off, and the water temperature is maintained by the electric heater to achieve energy saving and antifreeze effect. In this embodiment, the first preset temperature may be 7 °C.

Optionally, as an embodiment of the present invention, when the water temperature detecting unit detects that the water temperature in the pipeline is higher than the second preset temperature, the control unit controls the electric heater to be turned off, wherein the second preset temperature is higher than the first preset Set the temperature. In this embodiment, the second preset temperature may be 10 °C. In this embodiment, the temperature of the water in the pipeline may be detected by a temperature sensor disposed at the water inlet to detect the water temperature in the pipeline or the water temperature in the pipeline may be detected by a temperature sensor disposed at the outlet.

In this embodiment, when it is detected that the water temperature in the pipeline reaches the second preset temperature, the possibility that the pipeline freezes and freezes at this time is extremely small, and the electric heating device can be turned off to save energy while ensuring the antifreeze effect.

It should be understood that, in an embodiment of the present invention, an air conditioning pipeline antifreeze control device according to an embodiment of the present invention may correspond to an execution body of an air conditioning pipeline antifreeze control method according to an embodiment of the present invention, and the air conditioning pipeline antifreeze control device The above and other operations and/or functions of the respective units in order to implement the respective processes of the respective methods in FIG. 1 to FIG. 4 are omitted for brevity.

The embodiment of the invention further provides an air conditioner, comprising the air conditioning pipeline antifreeze control device according to any of the above embodiments.

According to the above technical solution of the embodiment of the present invention, the air conditioner including the anti-freeze control device is simple to use. Safe and efficient way to avoid water freezing in the pipeline due to too low temperature, especially water in the heat exchanger, volume expansion, damage to the heat exchanger, etc., prolonging the service life of the pipeline and extending The service life of the whole machine.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logic function or process. And the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present invention pertain.

The logic and/or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer readable medium, Used in conjunction with, or in conjunction with, an instruction execution system, apparatus, or device (eg, a computer-based system, a system including a processor, or other system that can fetch instructions and execute instructions from an instruction execution system, apparatus, or device) Or use with equipment. For the purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport a program for use in an instruction execution system, apparatus, or device, or in conjunction with the instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) having one or more wires, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM). In addition, the computer readable medium may even be a paper or other suitable medium on which the program can be printed, as it may be optically scanned, for example by paper or other medium, followed by editing, interpretation or, if appropriate, other suitable The method is processed to obtain the program electronically and then stored in computer memory.

It should be understood that portions of the invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware and in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), and the like.

One of ordinary skill in the art can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, includes one of the steps of the method embodiment or a group thereof Hehe.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated modules, if implemented in the form of software functional modules and sold or used as stand-alone products, may also be stored in a computer readable storage medium.

The above mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like. Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Out, Clockwise, Counterclockwise, Axial The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or The elements must have a particular orientation, are constructed and operated in a particular orientation and are therefore not to be construed as limiting.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

An anti-freeze control method for an air-conditioning pipeline, characterized in that the method comprises the following steps:

Obtaining the operating state of the air conditioning unit, and obtaining a temperature parameter reflecting the water temperature in the air conditioning pipeline when the air conditioning unit is in a shutdown state;

When the temperature parameter is lower than the preset antifreeze temperature, turn on the water pump on the air conditioning pipe and the electric heater installed on the air conditioning pipe.
The anti-freeze control method for an air-conditioning pipeline according to claim 1, further comprising detecting whether the water flow switch is normally closed in real time, and if the water flow switch is normally closed, maintaining the water pump and the electric heater to be turned on; if the water flow switch is not normally closed, Then control the pump to turn off and keep the electric heater on.
The anti-freeze control method for an air-conditioning pipeline according to claim 2, further comprising: detecting a water temperature in the air-conditioning pipeline in real time, and controlling the water pump to turn off when the water temperature in the air-conditioning pipeline is higher than the first preset temperature, and The electric heater is kept turned on, wherein the first preset temperature is higher than the preset antifreeze temperature.
The air conditioning pipeline antifreeze control method according to claim 3, wherein when the water temperature in the air conditioning pipeline is higher than the second preset temperature, the electric heater is controlled to be turned off, wherein the second preset temperature is higher than the first A preset temperature.
The antifreeze control method for an air conditioning pipeline according to any one of claims 1 to 4, wherein the temperature parameter comprises any one of an ambient temperature, an influent temperature, and an outlet water temperature.
An air conditioning pipeline antifreeze control device, comprising:

The unit state detecting unit is configured to obtain an operating state of the air conditioning unit, and trigger a temperature parameter detecting unit when the air conditioning unit is in a stop state;

a temperature parameter detecting unit, configured to acquire a temperature parameter reflecting a water temperature in the air conditioning pipeline according to a trigger of the unit state detecting unit;

The control unit is configured to open the water pump on the air conditioning pipeline and the electric heater installed on the air conditioning pipeline when the temperature parameter is lower than the preset antifreeze temperature.
The anti-freeze control device for an air-conditioning pipeline according to claim 6, further comprising a water flow switch detecting unit configured to detect in real time whether the water flow switch is normally closed;

The control unit is further configured to keep the water pump and the electric heater turned on when the water flow switch is normally closed; when the water flow switch is not normally closed, the control water pump is turned off, and the electric heater is kept turned on.
The air conditioning pipeline antifreeze control device according to claim 7, further comprising a water temperature detecting unit for detecting water temperature in the air conditioning pipeline in real time;

The control unit is further configured to control the water pump to be turned off when the water temperature in the pipeline is higher than the first preset temperature, and keep the electric heater turned on, wherein the first preset temperature is higher than the preset antifreeze temperature.
The air conditioning pipeline antifreeze control device according to claim 8, wherein the control unit is further configured to control the electric heater to be turned off when the water temperature detecting unit detects that the water temperature in the air conditioning pipeline is higher than the second preset temperature. The second preset temperature is higher than the first preset temperature.
The air conditioning pipeline antifreeze control device according to any one of claims 6 to 9, wherein the temperature parameter comprises any one of an ambient temperature, an influent temperature, and an outlet water temperature.
An air conditioner comprising the air conditioning pipeline antifreeze control device according to any one of claims 6 to 10.
A non-transitory computer readable storage medium having stored thereon a computer program, wherein the program is executed by a processor to implement the air conditioning pipeline antifreeze control method according to any one of claims 1 to 5.