Method and device for anti-freezing control of air conditioner, air conditioner and storage medium

Abstract

The application relates to the technical field of intelligent air conditioners, and discloses a method and device for anti-freezing control of an air conditioner, the air conditioner and a storage medium. The method comprises the following steps: acquiring a current working current of an indoor fan of the air conditioner in a running state; in the case that the current working current is greater than a preset working current, determining current freezing position information in an indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner; determining a current anti-freezing strategy matched with the current freezing position information, and performing corresponding anti-freezing control. In this way, the freezing detection and processing of the heat exchanger of the air conditioner are automatically completed, the freezing position is accurately determined, and the anti-freezing processing accuracy and efficiency of the air conditioner are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent air conditioners, for example to a method and device for anti-freezing control of an air conditioner, an air conditioner and a storage medium. BACKGROUND

[0002] Air conditioners are now essential household and office appliances, especially in summer and winter. Air conditioners can cool in summer and heat in winter, adjusting the indoor temperature to achieve winter and summer cooling, providing a comfortable environment for users.

[0003] In the cooling process of an air conditioner, water vapor in the air is easily condensed into dew or even frost on the indoor heat exchanger, causing the indoor heat exchanger of the indoor unit to freeze, thereby affecting the cooling effect of the air conditioner and making its cooling or dehumidifying capacity weaker and weaker. At present, the methods for handling anti-freezing include detecting the temperature of the inlet and outlet liquid positions to determine whether the indoor heat exchanger is frozen, but this method cannot accurately determine the anti-freezing position and cannot enable the air conditioner to respond quickly to anti-freezing.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an overall description of the application, nor is it intended to determine key / important elements or delineate the scope of these embodiments, but as a prelude to the detailed description below.

[0006] The embodiments of the present disclosure provide a method and device for anti-freezing control of an air conditioner, an air conditioner and a storage medium, to solve the technical problem of inaccurate anti-freezing control of an air conditioner.

[0007] In some embodiments, the method comprises:

[0008] obtaining a current working current of an indoor fan of the air conditioner in a running state;

[0009] In the case where the current working current is greater than a preset working current, determining current freezing position information in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner;

[0010] determining a current anti-freezing strategy matching the current freezing position information, and performing corresponding anti-freezing control.

[0011] In some embodiments, before the current freezing position information in the indoor heat exchanger of the air conditioner is determined, the method further comprises:

[0012] receiving an anti-freezing command; or

[0013] determining that the obtained current coil temperature of the air conditioner is less than a freezing temperature.

[0014] In some embodiments, the determining the current freezing position information in the indoor heat exchanger of the air conditioner comprises:

[0015] According to the liquid inlet direction, the air outlet temperature of each of the two or more positions of the strip-shaped air outlet is obtained from one end of the strip-shaped air outlet as a starting point, and the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position is obtained.

[0016] In the case where all the temperature differences are zero, the liquid outlet pipe of the air conditioner is determined as the current freezing position.

[0017] In the case where the current temperature difference is greater than the previous temperature difference by a set value, and the last temperature difference is greater than the current temperature difference, the freezing position on the hairpin tube of the indoor heat exchanger of the air conditioner is determined according to the current temperature difference.

[0018] In some embodiments, the determining the freezing position on the hairpin tube of the indoor heat exchanger of the air conditioner comprises:

[0019] determining the current position of the strip-shaped air outlet corresponding to the current temperature difference;

[0020] According to the proportional relationship between the strip-shaped air outlet and the hairpin tube, the freezing position on each hairpin tube corresponding to the current position is determined.

[0021] In some embodiments, after the determining the freezing position on each hairpin tube corresponding to the current position, the method comprises:

[0022] obtaining the in-tube pressure value corresponding to each hairpin tube, and determining one or more hairpin tubes as freezing hairpin tubes according to the in-tube pressure value;

[0023] determining the freezing position on the freezing hairpin tube as the current freezing position of the air conditioner.

[0024] In some embodiments, the determining the current anti-freezing strategy matching the current freezing position information comprises:

[0025] determining a current distance value between the current freezing position and the compressor of the air conditioner;

[0026] determining a current anti-freezing strategy matching the current distance value, wherein the current anti-freezing strategy comprises a current compressor frequency and a current power supply current matching the current distance value, wherein the greater the current distance value, the greater the current frequency, and the greater the current distance value.

[0027] In some embodiments, the determining the current anti-freezing strategy matching the current freezing position information comprises:

[0028] In a case where it is determined that the liquid outlet pipe of the air conditioner is the current freezing position, a current anti-freezing strategy is determined according to the obtained current coil temperature of the air conditioner.

[0029] In some embodiments, the device comprises:

[0030] The obtaining module is configured to obtain a current working current of the indoor fan of the air conditioner in a running state.

[0031] The freezing determining module is configured to, in a case where the current working current is greater than a preset working current, determine current freezing position information in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to the strip-shaped air outlet of the air conditioner.

[0032] The freezing control module is configured to determine a current anti-freezing strategy matching the current freezing position information and perform corresponding anti-freezing control.

[0033] In some embodiments, the device for anti-freezing control of an air conditioner comprises a processor and a memory storing program instructions, and the processor is configured to execute the program instructions to perform the above-mentioned method for anti-freezing control of an air conditioner.

[0034] In some embodiments, the air conditioner comprises an air conditioner body, and the above-mentioned device for anti-freezing control of an air conditioner is installed in the air conditioner body.

[0035] In some embodiments, the storage medium stores program instructions, and the program instructions are executed to perform the above-mentioned method for anti-freezing control of an air conditioner.

[0036] The method, device and air conditioner for anti-freezing control of an air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0037] By monitoring the working current of the indoor fan of the air conditioner, it is determined that the indoor heat exchanger of the air conditioner has freezing phenomenon, and according to the temperature difference corresponding to the air conditioner strip air outlet, the specific freezing position information on the indoor heat exchanger is determined, then the corresponding anti-freezing control is carried out through the current anti-freezing strategy matched with the freezing position information, so that the freezing detection and processing of the air conditioner heat exchanger are automatically completed, that is, the air conditioner can quickly complete the detection and processing of anti-freezing, and accurately confirm the freezing position, improve the accuracy and efficiency of the air conditioner anti-freezing processing.

[0038] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0039] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and are not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the various figures and in which:

[0040] Figure 1 is a flow diagram of an air conditioner anti-freezing control method provided by an embodiment of the present disclosure;

[0041] Figure 2 is a flow diagram of an air conditioner anti-freezing control method provided by an embodiment of the present disclosure;

[0042] Figure 3 is a flow diagram of an air conditioner anti-freezing control method provided by an embodiment of the present disclosure;

[0043] Figure 4 is a structural diagram of an air conditioner anti-freezing control device provided by an embodiment of the present disclosure;

[0044] Figure 5 is a structural diagram of an air conditioner anti-freezing control device provided by an embodiment of the present disclosure;

[0045] Figure 6 is a structural diagram of an air conditioner anti-freezing control device provided by an embodiment of the present disclosure;

[0046] Figure 7 is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the accompanying drawings are used for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0048] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0049] Unless otherwise specified, the term "a plurality of" means two or more.

[0050] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0051] The term "and / or" is a description of the relationship between the objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, three relationships.

[0052] In the embodiments of the present disclosure, during the operation of the air conditioner, by monitoring the working current of the air conditioner indoor fan, it is determined that the air conditioner indoor heat exchanger has a freezing phenomenon, and according to the temperature difference corresponding to the air conditioner strip air outlet, the specific dredging position information of the air conditioner indoor heat exchanger is determined, and the corresponding anti-freezing control is performed through the current anti-freezing strategy matched with the freezing position information. In this way, the freezing detection and processing of the air conditioner heat exchanger are automatically completed, that is, the air conditioner can quickly complete the detection and processing of the anti-freezing, and accurately confirm the freezing position, thereby improving the accuracy and efficiency of the air conditioner anti-freezing processing.

[0053] Figure 1 is a flowchart of an air conditioner anti-freezing control method provided by the embodiments of the present disclosure. As shown in Figure 1 , the process of air conditioner anti-freezing control includes:

[0054] Step 101: Obtain the current working current of the air conditioner indoor fan in the running state.

[0055] At present, the air conditioner can have multiple operation modes, including: a refrigeration mode, a heating mode, a dehumidification mode, a sterilization mode, and the like. During the normal refrigeration mode, the dehumidification mode, and the like of the air conditioner, the indoor heat exchanger may freeze. Therefore, the working current of the indoor fan of the air conditioner can be monitored, that is, the working current of the indoor fan of the air conditioner can be obtained in a time manner or in a real-time manner. At the current time, the current working current of the indoor fan of the air conditioner is obtained.

[0056] In step 102, in a case where the current working current is greater than the preset working current, the current freezing position information in the indoor heat exchanger of the air conditioner is determined according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner.

[0057] In the embodiment of the present disclosure, if an abnormality occurs in the pipeline of the indoor heat exchanger of the air conditioner, for example, a dirty blockage phenomenon occurs, or a freezing phenomenon occurs, and the like, the working current of the indoor fan may be relatively large. Therefore, when the current working current obtained is greater than the preset working current, it can be determined that an abnormality occurs in the pipeline of the indoor heat exchanger. Moreover, when the current working current is greater than the preset working current, it can be determined that a freezing phenomenon occurs in the pipeline of the indoor heat exchanger when the air conditioner is in the refrigeration mode, the dehumidification mode, and the like.

[0058] In some embodiments, in a case where the current working current is greater than the preset working current, it can be directly determined that a freezing phenomenon occurs in the indoor heat exchanger of the air conditioner in the refrigeration mode or the dehumidification mode, and the anti-freezing treatment needs to be performed. Alternatively, in some embodiments, in a case where the current working current is greater than the preset working current, if an anti-freezing command is received, it can be determined that a freezing phenomenon occurs in the indoor heat exchanger of the air conditioner, and the anti-freezing needs to be performed. Alternatively, in some embodiments, in a case where the current working current is greater than the preset working current, if the current coil temperature of the air conditioner obtained is less than the freezing temperature, it indicates that a dirty blockage phenomenon does not occur in the indoor heat exchanger of the air conditioner, but a freezing phenomenon occurs, and the anti-freezing treatment needs to be performed. That is, before the current freezing position information in the indoor heat exchanger of the air conditioner is determined, the anti-freezing command is received, or it is determined that the current coil temperature of the air conditioner obtained is less than the freezing temperature.

[0059] In the embodiment of the present disclosure, when it is determined that a freezing phenomenon occurs in the indoor heat exchanger of the air conditioner and the anti-freezing needs to be performed, the specific anti-freezing position in the indoor heat exchanger of the air conditioner also needs to be determined. In some embodiments, the current freezing position information in the indoor heat exchanger of the air conditioner can be determined according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner.

[0060] The air outlet of the air conditioner is generally a strip-shaped air outlet. Therefore, the air outlet temperature of the strip-shaped air outlet can be monitored according to the liquid inlet direction, the temperature difference between the air outlet temperatures corresponding to different air outlet positions can be obtained, and the current freezing position information in the indoor heat exchanger of the air conditioner can be determined according to the temperature difference. In some embodiments, the following steps can be included: starting from one end of the strip-shaped air outlet, the air outlet temperatures of two or more positions of the strip-shaped air outlet are obtained one by one according to the liquid inlet direction, and the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position is obtained; in the case that all the temperature differences are zero, the liquid outlet pipe of the air conditioner is determined as the current freezing position; in the case that the current temperature difference is greater than the previous temperature difference by a set value and the next temperature difference is greater than the current temperature difference, the freezing position on the hairpin pipe of the indoor heat exchanger of the air conditioner is determined according to the current temperature difference.

[0061] The hairpin pipe of the air conditioner can be composed of two or more straight pipes and corresponding bend pipes, and the proportional relationship between the strip-shaped air outlet and the hairpin pipe is saved in the air conditioner. Therefore, starting from the end of the strip-shaped air outlet corresponding to the liquid inlet pipe of the hairpin pipe of the indoor heat exchanger, the air outlet temperatures of two or more positions of the strip-shaped air outlet are obtained one by one according to a set position interval or a set time interval, and after obtaining each current air outlet temperature, the current air outlet temperature and the previous air outlet temperature corresponding to the previous position are compared to obtain the current temperature difference between the current air outlet temperature and the previous air outlet temperature. Of course, there is no corresponding temperature difference at the beginning.

[0062] If there is no freezing phenomenon in the hairpin pipe of the indoor heat exchanger of the air conditioner, the obtained temperature difference is relatively stable, basically unchanged or changes little. At this time, it is indicated that the freezing phenomenon occurs in the liquid outlet pipe of the indoor heat exchanger, i.e., in the case that all the temperature differences are zero, the liquid outlet pipe of the air conditioner is determined as the current freezing position.

[0063] If the temperature difference obtained at a certain stage increases significantly, i.e., the current temperature difference is greater than the previous temperature difference by a set value and the next temperature difference is greater than the current temperature difference, it is indicated that the freezing phenomenon occurs in the hairpin pipe of the indoor heat exchanger, and the freezing position on each hairpin pipe corresponding to the current position can be determined according to the current temperature difference.

[0064] Since the proportional relationship between the strip-shaped air outlet and the hairpin pipe is saved, after the current position of the strip-shaped air outlet corresponding to the current temperature difference is determined, the freezing position on each hairpin pipe corresponding to the current position can be determined according to the proportional relationship between the strip-shaped air outlet and the hairpin pipe.

[0065] The hairpin tube can have one, two or more, so in some embodiments, when the hairpin tube has two or more, the specific hairpin tube can be further determined, that is, after determining the frozen position on each hairpin tube corresponding to the current position, including: obtaining the pressure value in the tube corresponding to each hairpin tube, and determining one or more hairpin tubes as the frozen hairpin tube according to the pressure value in the tube; The frozen position on the frozen hairpin tube is determined as the current frozen position of the air conditioner.

[0066] The corresponding liquid outlet pressure valve configured on the liquid outlet pipe connected to each hairpin tube can detect the pressure value of the liquid outlet pressure valve to obtain the pressure value in the tube corresponding to each hairpin tube. If the detected current pressure value in the tube is greater than a certain set value, it is determined that the corresponding current hairpin tube has a frozen phenomenon, that is, the current hairpin tube is determined as the frozen hairpin tube, so that the frozen position on the frozen hairpin tube is determined as the current frozen position of the air conditioner.

[0067] Step 103: determining the current anti-freezing strategy matched with the current frozen position information, and performing corresponding anti-freezing control.

[0068] After determining the current frozen position in the air conditioner indoor heat exchanger, the current frozen position information is obtained, which can include: liquid outlet pipe information or current frozen position in the hairpin tube. In some embodiments,

[0069] In the case of determining that the liquid outlet pipe of the air conditioner is the current frozen position, since the coil temperature sensor is configured on the liquid outlet pipe, the current anti-freezing strategy is determined according to the current coil temperature of the air conditioner, and then the corresponding anti-freezing control is performed, that is, the anti-freezing processing mode according to the coil temperature in the related art is used for operation, which will not be described in detail.

[0070] In some embodiments, in the case of determining that the hairpin tube in the air conditioner indoor heat exchanger has a current frozen position, the current distance value between the current frozen position and the air conditioner compressor can be determined; and the current anti-freezing strategy matched with the current distance value is determined and corresponding anti-freezing control is performed. The current anti-freezing strategy can include: the current frequency and the current power supply current of the compressor matched with the current distance value, wherein the greater the current distance value, the greater the current frequency, and the greater the current distance value.

[0071] The farther the frozen position is from the compressor, the greater the frequency of the compressor will be, and the greater the power supply current will be, so that enough heat can reach the frozen position to thaw and realize the anti-freezing processing of the air conditioner indoor unit.

[0072] It can be seen that in the embodiment of the present disclosure, when the air conditioner is in a cooling, dehumidifying or other mode, the freezing phenomenon of the indoor heat exchanger of the air conditioner is determined by monitoring the working current of the indoor fan of the air conditioner, and the specific freezing position information of the indoor heat exchanger is determined according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner. Then, different freezing position information adopts different anti-freezing strategies, and corresponding anti-freezing control is performed, so that the freezing detection and processing of the air conditioner heat exchanger are automatically completed, that is, the air conditioner can quickly complete the detection and processing of anti-freezing, and accurately determine the freezing position, thereby improving the accuracy and efficiency of anti-freezing processing of the air conditioner.

[0073] The operation flow will be combined into specific embodiments below to illustrate the air conditioner anti-freezing control process provided by the embodiment of the present disclosure.

[0074] In an embodiment of the present disclosure, the indoor heat exchanger of the air conditioner includes a hairpin tube, and corresponding liquid inlet and outlet pipes, and the air conditioner stores the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0075] Figure 2 is a flowchart of an air conditioner anti-freezing control method provided by an embodiment of the present disclosure. As shown in Figure 2 , the air conditioner anti-freezing control process includes:

[0076] Step 201: The air conditioner obtains the current working current of the indoor fan of the air conditioner in the running state and the current coil temperature of the indoor heat exchanger.

[0077] Step 202: The air conditioner determines whether the current working current is greater than the preset working current. If yes, step 203 is executed, otherwise, the flow ends.

[0078] Step 203: The air conditioner determines whether the current coil temperature is less than the freezing temperature. If yes, step 204 is executed, otherwise, the flow ends.

[0079] The order of step 202 and step 203 can not be limited, and step 203 can be executed first and then step 202.

[0080] Step 204: According to the liquid inlet direction, the air conditioner obtains the outlet air temperature of two or more positions of the strip-shaped air outlet from one end of the strip-shaped air outlet as the starting point, and obtains the temperature difference between the outlet air temperature corresponding to each position and the outlet air temperature corresponding to the previous position.

[0081] Step 205: The air conditioner determines whether there is a current temperature difference. Wherein, the current temperature difference is greater than the previous temperature difference by a set value, and the last temperature difference is greater than the current temperature difference. If yes, step 206 is executed, otherwise, step 210 is executed.

[0082] Step 206: The air conditioner determines the current position of the strip-shaped air outlet corresponding to the current temperature difference.

[0083] Step 207: According to the proportional relationship between the strip-shaped air outlet and the hairpin tube, the air conditioner determines the frozen position on the hairpin tube corresponding to the current position.

[0084] Step 208: The air conditioner determines the current distance value between the current frozen position and the air conditioner compressor.

[0085] Step 209: The air conditioner determines the current anti-freezing strategy matching the current distance value, and performs corresponding anti-freezing control.

[0086] Among them, the current anti-freezing strategy includes: the current frequency and the current power supply current of the compressor matching the current distance value, wherein the greater the current distance value, the greater the current frequency, and the greater the current distance value.

[0087] Step 210: The air conditioner determines the current anti-freezing strategy according to the current coil temperature of the air conditioner obtained, and performs corresponding anti-freezing control.

[0088] It can be seen that in the embodiment, when the air conditioner is running, the working current of the air conditioner indoor fan is monitored to determine that the air conditioner indoor heat exchanger has freezing phenomenon, and the specific freezing position information of the indoor heat exchanger is determined according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner. Then, different freezing position information adopts different anti-freezing strategies, and corresponding anti-freezing control is performed, so that the freezing detection and processing of the air conditioner heat exchanger are automatically completed, that is, the air conditioner can quickly complete the detection and processing of anti-freezing, and accurately confirm the freezing position, thereby improving the anti-freezing processing accuracy and efficiency of the air conditioner.

[0089] In an embodiment of the present disclosure, the indoor heat exchanger of the air conditioner includes two or more hairpin tubes, and an inlet pipe and an outlet pipe corresponding to each hairpin tube. And the air conditioner saves the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0090] Figure 3 is a flowchart of an air conditioner anti-freezing control method provided by an embodiment of the present disclosure. As shown in Figure 3 , the air conditioner anti-freezing control process includes:

[0091] Step 301: The air conditioner obtains the current working current of the air conditioner indoor fan in the refrigeration running state.

[0092] Step 302: The air conditioner determines whether the current working current is greater than the preset working current? If yes, execute step 303, otherwise, the process is ended.

[0093] Step 303: According to the liquid inlet direction, the air conditioner obtains the air outlet temperature of two or more positions of the strip-shaped air outlet from one end of the strip-shaped air outlet as the starting point, and obtains the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position.

[0094] Step 304: The air conditioner determines whether there is a current temperature difference, wherein the current temperature difference is greater than the previous temperature difference by a set value, and the last temperature difference is greater than the current temperature difference, if yes, step 305 is executed, otherwise, step 310 is executed.

[0095] Step 305: The air conditioner determines the current position of the strip-shaped air outlet corresponding to the current temperature difference.

[0096] Step 306: The air conditioner determines the frozen position on the hairpin pipe corresponding to the current position according to the proportional relationship between the strip-shaped air outlet and the hairpin pipe.

[0097] Step 307: The air conditioner obtains the pressure value of each hairpin pipe corresponding to the liquid outlet pressure valve, and determines one or more hairpin pipes as frozen hairpin pipes according to the pressure value.

[0098] The air conditioner can obtain the pressure value of each hairpin pipe corresponding to the liquid outlet pressure valve, and determine the corresponding hairpin pipe as a frozen hairpin pipe when the obtained pressure value is greater than a certain set value.

[0099] Step 308: The air conditioner determines the frozen position on the frozen hairpin pipe as the current frozen position of the air conditioner.

[0100] Step 309: The air conditioner determines the current anti-freezing strategy matching the current distance value and performs corresponding anti-freezing control.

[0101] Step 310: The air conditioner determines the current anti-freezing strategy according to the obtained current coil temperature of the air conditioner and performs corresponding anti-freezing control.

[0102] It can be seen that in the embodiment, when the air conditioner is in cooling, dehumidifying and other modes, the working current of the air conditioner indoor fan is monitored to determine that the air conditioner indoor heat exchanger has freezing phenomenon, the specific freezing position information of the indoor heat exchanger is determined according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner, then different freezing position information adopts different anti-freezing strategies and performs corresponding anti-freezing control, thereby automatically completing the freezing detection and processing of the air conditioner heat exchanger, that is, the air conditioner can quickly complete the detection and processing of anti-freezing, and accurately confirm the freezing position, thereby improving the accuracy and efficiency of the air conditioner anti-freezing processing.

[0103] According to the above process for air conditioner anti-freezing control, a device for air conditioner anti-freezing control can be constructed.

[0104] Figure 4Fig. 1 is a structural schematic diagram of an anti-freezing control device for an air conditioner provided by an embodiment of the present disclosure. As shown in Fig. 1, the anti-freezing control device 400 for the air conditioner comprises an acquisition module 410, a freezing determination module 420 and a freezing control module 430. Figure 4

[0105] The acquisition module 410 is configured to acquire a current working current of an indoor fan of the air conditioner in a running state.

[0106] The freezing determination module 420 is configured to determine current freezing position information in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a belt-shaped air outlet of the air conditioner in a case where the current working current is greater than a preset working current.

[0107] The freezing control module 430 is configured to determine a current anti-freezing strategy matched with the current freezing position information and perform corresponding anti-freezing control.

[0108] In some embodiments, the anti-freezing control device further comprises a freezing running module configured to receive an anti-freezing command or determine that a current coil temperature of the air conditioner acquired is less than a freezing temperature.

[0109] In some embodiments, the freezing determination module 420 comprises:

[0110] A temperature difference monitoring unit is configured to acquire, according to a liquid inlet direction, air outlet temperatures of two or more positions of the belt-shaped air outlet one by one from a starting point of one end of the belt-shaped air outlet, and obtain a temperature difference between an air outlet temperature corresponding to each position and an air outlet temperature corresponding to a previous position.

[0111] A first position determination unit is configured to determine, in a case where all the temperature differences are zero, a liquid outlet pipe of the air conditioner as a current freezing position.

[0112] A second position determination unit is configured to determine, in a case where a current temperature difference is greater than a previous temperature difference by a set value and a next temperature difference is greater than the current temperature difference, a freezing position on a hairpin pipe of the indoor heat exchanger of the air conditioner according to the current temperature difference.

[0113] In some embodiments, the second position determination unit is configured to determine a current position of the belt-shaped air outlet corresponding to the current temperature difference, and determine a freezing position on each hairpin pipe corresponding to the current position according to a proportional relationship between the belt-shaped air outlet and the hairpin pipe.

[0114] In some embodiments, the freezing determination module 420 further comprises a pipe determination unit configured to determine a current position of the belt-shaped air outlet corresponding to the current temperature difference, and determine a freezing position on each hairpin pipe corresponding to the current position according to a proportional relationship between the belt-shaped air outlet and the hairpin pipe.

[0115] ​In some embodiments, the freeze control module 430 is specifically configured to determine a current distance value between the current freeze position and the air conditioner compressor; determine a current anti-freeze strategy matching the current distance value, wherein the current anti-freeze strategy includes a current frequency of the compressor matching the current distance value and a current power supply current, and the greater the current distance value, the greater the current frequency.

[0116] In some embodiments, the freeze control module 430 is specifically configured to determine a current anti-freeze strategy according to the current coil temperature of the air conditioner when it is determined that the liquid outlet pipe of the air conditioner is the current freeze position.

[0117] The air conditioner anti-freeze control process for the air conditioner anti-freeze control device is further described below in combination with embodiments.

[0118] In this embodiment, the indoor heat exchanger of the air conditioner includes two or more hairpin tubes, and a liquid inlet pipe and a liquid outlet pipe corresponding to each hairpin tube, and the air conditioner stores the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0119] Figure 5 is a structural schematic diagram of an air conditioner anti-freeze control device provided by an embodiment of the present disclosure. As shown in Figure 5 The air conditioner anti-freeze control device 400 includes an acquisition module 410, a freeze determination module 420, and a freeze control module 430, and further includes a freeze running module 440. The freeze determination module 420 includes a temperature difference monitoring unit 421, a first position determination unit 422, a second position determination unit 423, and a pipe determination unit 424.

[0120] In this embodiment, during the air conditioner refrigeration operation, the freeze running module 440 receives an anti-freeze command, so that the acquisition module 410 acquires the current working current of the air conditioner indoor fan in the running state. When the current working current is greater than the preset working current, the temperature difference monitoring unit 421 in the freeze determination module 420 acquires the air outlet temperature of two or more positions of the strip-shaped air outlet from the end of the strip-shaped air outlet as the starting point according to the liquid inlet direction, and obtains the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position. If all the temperature differences are zero, the first position determination unit 422 can determine that the liquid outlet pipe of the air conditioner is the current freeze position, so that the freeze control module 430 can determine a current anti-freeze strategy according to the current coil temperature of the air conditioner, and perform corresponding anti-freeze control.

[0121] If the current temperature difference is greater than the previous temperature difference by a set value, and the later temperature difference is greater than the current temperature difference, the second position determination unit 423 in the freezing determination module 420 determines the current position of the strip-shaped air outlet corresponding to the current temperature difference, and determines the freezing position on the hairpin tube corresponding to the current position according to the proportional relationship between the strip-shaped air outlet and the hairpin tube. In this way, the pipe determination unit 424 can obtain the pipe pressure value corresponding to each hairpin tube, and determine one or more hairpin tubes as the frozen hairpin tube according to the pipe pressure value, and determine the freezing position on the frozen hairpin tube as the current freezing position of the air conditioner.

[0122] Therefore, the freezing control module 430 can determine the current distance value between the current freezing position and the air conditioner compressor, and determine the current anti-freezing strategy matching the current distance value for corresponding anti-freezing control, wherein the current anti-freezing strategy includes the current frequency and the current power supply current matching the current distance value, and the greater the current distance value, the greater the current frequency and the current distance value.

[0123] It can be seen that in the embodiment, during the operation of the air conditioner, the device for controlling the freezing of the air conditioner heat exchanger determines that the air conditioner indoor heat exchanger has freezing phenomenon by monitoring the working current of the air conditioner indoor fan, determines the specific freezing position information on the indoor heat exchanger according to the temperature difference corresponding to the air conditioner strip-shaped air outlet, then different freezing position information adopts different anti-freezing strategies and corresponding anti-freezing control, thereby automatically completing the freezing detection and processing of the air conditioner heat exchanger, i.e., the air conditioner can quickly complete the detection and processing of anti-freezing, and accurately confirm the freezing position, thereby improving the accuracy and efficiency of the air conditioner anti-freezing processing.

[0124] In combination with Figure 6 The device 600 for anti-freezing control of an air conditioner provided by the embodiment of the present disclosure comprises:

[0125] The processor 1000 and the memory 1001 can also include a communication interface 1002 and a bus 1003. The processor 1000, the communication interface 1002 and the memory 1001 can complete mutual communication through the bus 1003. The communication interface 1002 can be used for information transmission. The processor 1000 can call the logical instructions in the memory 1001 to execute the method for anti-freezing control of an air conditioner of the above-mentioned embodiments.

[0126] In addition, the logical instructions in the memory 1001 mentioned above can be realized in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0127] The memory 1001 can be configured to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 1000 can execute the function application and data processing, that is, implement the method for anti-freezing control of an air conditioner in the method embodiments by running the program instructions / modules stored in the memory 1001.

[0128] The memory 1001 can include a program storage area and a data storage area. The program storage area can store an operating system and at least one application required by a function. The data storage area can store data created during use of the terminal device, and the like. In addition, the memory 1001 can include a high-speed random access memory, and can further include a nonvolatile memory.

[0129] The embodiments of the present disclosure provide an anti-freezing control device for an air conditioner, including a processor and a memory storing program instructions, the processor is configured to execute the anti-freezing control method for an air conditioner when executing the program instructions.

[0130] In combination Figure 7 , the embodiments of the present disclosure provide an air conditioner 700, including an air conditioner body and the anti-freezing control device 400 (600) for an air conditioner described above. The anti-freezing control device 400 (600) for an air conditioner is installed on the air conditioner body. The installation relationship described herein is not limited to placing in the product, but also includes installation connection with other components of the product, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the anti-freezing control device 400 (600) for an air conditioner can be adapted to a feasible air conditioner body, and thus other feasible embodiments can be implemented.

[0131] The embodiments of the present disclosure provide a storage medium storing program instructions, the program instructions execute the method for anti-freezing control of an air conditioner when running.

[0132] The embodiments of the present disclosure provide a computer program product, the computer program product includes a computer program stored in a storage medium, the computer program includes program instructions, when the program instructions are executed by a computer, the computer executes the method for anti-freezing control of an air conditioner.

[0133] The storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0134] The technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. various media that can store program codes, or can be a transitory storage medium.

[0135] The above description and drawings are illustrative of embodiments of the present disclosure and are not intended to be limiting. Other embodiments can include structural, logical, electrical, process, and other changes. Embodiments are illustrative of the many possible variations that are readily undertaken. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, those of other embodiments. The scope of the present disclosure encompasses the entire scope of the following claims, and all available equivalents of the claims. When used in this application, the terms "first," "second," and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without changing the meaning of the description, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first element and the second element are both elements, but they are not necessarily the same element. Also, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. In addition, the term "comprises / comprising" and / or "comprises / comprising" when used in this application is taken to mean, for either the singular or plural forms, the stated features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Without more limitations, an element preceded by "comprises a" does not, without more limitations, preclude the existence of additional identical elements in the process, method, article, or apparatus including the recited element. In this document, each embodiment is highlighted by what is different from other embodiments. Identical or similar parts between embodiments can be cross-referenced. For the methods, products, and the like disclosed in the embodiments, if they correspond to the method part of the embodiments, the relevant parts can be cross-referenced with the description of the method part.

[0136] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to realize the described functions, but such implementation should not be considered beyond the scope of the embodiments of the present disclosure. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0137] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units can only be a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to implement the embodiments. In addition, each functional unit in the embodiments of the present disclosure can be integrated in one processing unit, or each unit can be a physically independent unit, or two or more units can be integrated in one unit.

[0138] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

Claims

1. A method for anti-freezing control of an air conditioner, characterized by, The method comprises: acquiring a current working current of the indoor fan of the air conditioner in a running state; in the case that the current working current is greater than a preset working current, determining current freezing position information in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to the strip-shaped air outlet of the air conditioner; determining a current anti-freezing strategy matched with the current freezing position information, and performing corresponding anti-freezing control; wherein the determination of the current freezing position information in the indoor heat exchanger of the air conditioner comprises: according to the liquid inlet direction, taking one end of the strip-shaped air outlet as the starting point, acquiring the air outlet temperature of two or more positions of the strip-shaped air outlet one by one, and obtaining the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position; in the case that all the temperature differences are zero, determining that the liquid outlet pipe of the air conditioner is the current freezing position; in the case that the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference, determining the current position of the strip-shaped air outlet corresponding to the current temperature difference; according to the proportional relationship between the strip-shaped air outlet and the hairpin pipe, determining the freezing position on each hairpin pipe corresponding to the current position.

2. The method of claim 1, wherein, Before the determination of the current freezing position information in the indoor heat exchanger of the air conditioner, the method further comprises: receiving an anti-freezing command; or determining that the current coil temperature of the air conditioner acquired is less than the freezing temperature.

3. The method of claim 1, wherein, After the determination of the freezing position on each hairpin pipe corresponding to the current position, the method comprises: acquiring the pipe internal pressure value corresponding to each hairpin pipe, and determining one or more hairpin pipes as frozen hairpin pipes according to the pipe internal pressure value; determining the freezing position on the frozen hairpin pipe as the current freezing position of the air conditioner.

4. The method of claim 3, wherein, The determination of the current anti-freezing strategy matched with the current freezing position information comprises: determining a current distance value between the current freezing position and the compressor of the air conditioner; determining a current anti-freezing strategy matched with the current distance value, wherein the current anti-freezing strategy comprises a current frequency and a current power supply current of the compressor matched with the current distance value, wherein the greater the current distance value, the greater the current frequency, and the greater the current power supply current.

5. The method of claim 1, wherein, The determination of the current anti-freezing strategy matched with the current freezing position information comprises: in the case that the liquid outlet pipe of the air conditioner is determined as the current freezing position, determining a current anti-freezing strategy according to the current coil temperature of the air conditioner acquired.

6. An apparatus for anti-freezing control of an air conditioner, characterized by comprising: comprises: an acquisition module configured to acquire a current working current of the indoor fan of the air conditioner in a running state; a freezing determination module configured to, in the case that the current working current is greater than a preset working current, determine current freezing position information in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to the strip-shaped air outlet of the air conditioner; a freezing control module configured to determine a current anti-freezing strategy matched with the current freezing position information, and perform corresponding anti-freezing control; wherein the freezing determination module comprises a temperature monitoring unit, a first determination unit and a second determination unit; a temperature monitoring unit configured to obtain, according to a liquid inlet direction, air outlet temperatures of two or more positions of the strip-shaped air outlet one by one from one end of the strip-shaped air outlet, and obtain temperature differences between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position; a first determination unit configured to determine that the liquid outlet pipe of the air conditioner is a current frozen position when all the temperature differences are zero; a second determination unit configured to determine a current position of the strip-shaped air outlet corresponding to the current temperature difference when the current temperature difference is greater than the previous temperature difference by a set value and the next temperature difference is greater than the current temperature difference, and determine frozen positions on each hairpin pipe corresponding to the current position according to a proportional relationship between the strip-shaped air outlet and the hairpin pipe.

7. An apparatus for anti-freezing control of an air conditioner, the apparatus comprising a processor and a memory having stored therein program instructions, wherein, The processor is configured to execute the method for air conditioner anti-freezing control according to any one of claims 1 to 5 when executing the program instructions.

8. An air conditioner characterized by comprising: comprising: an air conditioner body; the device for air conditioner anti-freezing control according to claim 6 or 7 is installed in the air conditioner body.

9. A storage medium storing program instructions, characterized in that, The program instructions execute the method for air conditioner anti-freezing control according to any one of claims 1 to 5 when running.

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