Control method for reducing thermal deformation sound of air conditioner and formed air conditioner control method

Abstract

The invention provides a control method for reducing air conditioner thermal deformation sound and a formed air conditioner control method thereof.The control method for reducing the air conditioner thermal deformation sound comprises the steps that the thermal deformation shrinkage rate of an injection molding part in an air conditioner and the temperature difference between the indoor temperature and the set temperature in the air conditioner operation mode are obtained; in the starting stage of the air conditioner, the refrigerating capacity or heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and the temperature difference; wherein the larger the thermal deformation shrinkage rate and / or the temperature difference is, the smaller the refrigerating capacity or the heating capacity of the air conditioner is. By reducing the heat exchange amount, the evaporation or condensation temperature and the intermediate temperature of the heat exchanger in the starting time period of the air conditioner, the deformation amount of the injection molding part is reduced, stress release of the injection molding part is slow, and then the injection molding part deforms slowly; effective suppression of thermal deformation abnormal sound of the air conditioner injection molding part is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, and in particular to a control method for reducing air conditioner thermal deformation sound and an air conditioner control method formed by the same. BACKGROUND

[0002] With the rapid development of the air conditioner industry, users have increasingly stringent requirements for product comfort and quietness. An air conditioner indoor unit is usually composed of injection molding materials, and the thermal deformation abnormal sound of the injection molding parts has become a key pain point affecting the quality of the air conditioner. In the field of air conditioner manufacturing, injection molding parts are important components of the indoor unit, and the characteristics of the injection molding parts directly affect the overall quality of the air conditioner and the user experience. Among them, the abnormal sound problem caused by the thermal deformation characteristics of the injection molding material has long plagued the consumer's own experience and the optimization and development of the industry, especially for the elderly and children who have higher requirements for sleep environment quality.

[0003] During the operation of the air conditioner, the indoor temperature changes relatively strongly. In the heating or cooling mode, the temperature of the air duct is close to the evaporator, and the temperature changes quickly. This sudden change in temperature can cause the release of stress due to thermal expansion and contraction of the air duct injection molding parts, thereby causing relatively small displacement or movement of the injection molding parts. When the relative displacement or movement of two injection molding parts is greater than the gap between the two injection molding parts, friction or collision sound of the injection molding material occurs, resulting in thermal deformation noise affecting the user experience.

[0004] Different injection molding parts have different degrees of thermal expansion and contraction due to differences in their raw materials, thickness, and structure. Injection molding parts of different materials and structures, such as air duct assemblies, shell components, and air deflectors, are prone to dimensional deformation due to inconsistent thermal expansion coefficients, which can cause abnormal friction and vibration between parts. This affects the fitting precision or gap between injection molding parts. When the relative displacement between injection molding parts exceeds a certain range, the surfaces in contact with each other will produce friction and vibration, and then produce abnormal sound. For example, in some wall-mounted air conditioners, the bottom shell, panel body, panel, side plate, left and right air sweeping blades, air deflector, and motor cover are usually composed of multiple injection molding parts. When the cooling or heating mode is turned on or off, the thermal expansion and contraction of the injection molding parts will occur with the sudden change in temperature, which can cause local relative displacement at the fitting place and trigger discontinuous friction abnormal sound. This abnormal sound is irregular and sometimes large and sometimes small, which seriously affects the user's experience. For example, when a split air conditioner is started in heating mode at a low indoor temperature (such as -15℃), the friction abnormal sound may last for 15-20 minutes, which undoubtedly greatly reduces the user's satisfaction with the product.

[0005] According to industry research data, about 70% of customer complaints are caused by internal machine noise. About 70% of the noise complaints of air conditioner internal machine are caused by mechanical interference problems caused by thermal deformation of internal machine injection material. The existing technology mainly includes improvement of injection material and adjustment of assembly process to respond to the sound of thermal deformation. This idea has obvious limitations. At the material level, even if the PP material is modified by adding fillers, it is difficult to completely eliminate the thermal expansion and contraction phenomenon. However, due to the requirement of appearance diversity, color masterbatch needs to be added during plastic injection. The dispersion, melting state and compatibility of the color masterbatch with the base material will affect the mechanical properties of the product. The color masterbatch of some manufacturers will exacerbate the thermal expansion and contraction noise, so the modified PP material cannot fundamentally solve the problem of thermal expansion and contraction noise. Although increasing the reinforcing rib and optimizing the assembly gap can improve the situation to a certain extent, it cannot accurately match the dynamic deformation demand under complex working conditions. In the assembly process, traditional noise reduction measures such as pasting buffer materials such as sponge and velvet are often used, which not only increases the production cost and assembly complexity, but also causes the buffer material to age and fail due to long-term use, making it difficult to achieve long-term noise reduction. In addition, with the development of air conditioner products towards lightness, thinness and integration, the internal space is becoming increasingly compact, and the thermal deformation problem of injection material is becoming more and more prominent. The existing solutions cannot meet the high-quality development needs of the industry. SUMMARY

[0006] To overcome the problems in the related art, one of the purposes of the present application is to provide a control method for reducing air conditioner thermal deformation sound. When the thermal deformation shrinkage rate and / or temperature difference is greater, the air conditioner heating capacity or cooling capacity is reduced to blow the air conditioner internal injection molding part, so as to avoid the injection molding part from generating large deformation to cause relative displacement between parts and mutual friction / collision. The heat exchange capacity, evaporation or condensation temperature, and intermediate temperature of the heat exchanger during the air conditioner startup period are reduced, thereby reducing the deformation amount of the injection molding part, allowing the stress release of the injection molding part to proceed slowly, and further allowing the injection molding part to deform slowly. The effective suppression of air conditioner injection molding part thermal deformation noise is achieved.

[0007] A control method for reducing air conditioner thermal deformation sound, comprising: obtaining the thermal deformation shrinkage rate of the air conditioner internal injection molding part, and the temperature difference between the indoor temperature and the set temperature under the air conditioner operating mode; controlling the cooling capacity or heating capacity of the air conditioner during the startup stage of the air conditioner according to the thermal deformation shrinkage rate and the temperature difference; wherein the greater the thermal deformation shrinkage rate and / or temperature difference, the smaller the cooling capacity or heating capacity of the air conditioner.

[0008] In the preferred technical solution of the present application, when the thermal deformation shrinkage rate and / or temperature difference is greater than the deformation shrinkage rate threshold and / or temperature difference threshold, the cooling capacity or heating capacity of the air conditioner is gradually increased to a preset value.

[0009] The air conditioner starting stage in the application usually occurs within 15 seconds after the air conditioner is turned on, and the refrigerating capacity / heat capacity of the air conditioner during the air conditioner starting process in the application gradually increases; the logic method is consistent with the existing air conditioner starting process, and the rapid refrigerating / heat efficiency during the air conditioner starting period in the air conditioner use process is not lost.

[0010] In the preferred technical solution of the application, the air conditioner comprises a compressor, an indoor fan, and a sweep plate arranged at an air outlet; the refrigerating capacity or heat capacity of the air conditioner is controlled by at least one of the following methods: by controlling the rotating speed of the indoor fan; the greater the rotating speed of the indoor fan, the greater the refrigerating capacity or heat capacity of the air conditioner; by controlling the frequency of the compressor; the greater the frequency of the compressor, the greater the refrigerating capacity or heat capacity of the air conditioner; by controlling whether the sweep plate is opened; the refrigerating capacity or heat capacity of the air conditioner when the sweep plate is opened is greater than that when the sweep plate is closed.

[0011] In the application, the starting parameters of the compressor frequency and the indoor fan rotating speed are different within 0-t1 in different temperature difference and thermal deformation shrinkage rate intervals, and the compressor frequency and the indoor fan rotating speed are both gradually increased in a stepwise manner until the parameters under the stable operation of the air conditioner after t1. The logic method of the stepwise control sound in the application has the characteristics of smooth operation, high efficiency refrigeration / heat, and high comfort experience; the smooth operation of the air conditioner in the application can also prolong the service life of the compressor and avoid the wear caused by the unstable operation of the compressor.

[0012] By adjusting the up / down / left / right sweep of the air conditioner after the air conditioner is turned on, the sound problem caused by the thermal expansion and cold shrinkage deformation of the injection molding material due to the blowing of the cold / heat into the air conditioner is avoided, the energy loss caused by the blowing of the refrigeration / heat into the air conditioner is reduced, the effective suppression of the thermal deformation abnormal sound of the air conditioner injection molding part is realized, and the user's use comfort requirement is met.

[0013] In the preferred technical solution of the application, when the temperature difference T>T2 and the thermal deformation shrinkage rate L>Lb, the refrigerating capacity or heat capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and the temperature difference, comprising: 0-t1, the rotating speed n of the indoor fan satisfies: n t1-t2, the rotating speed n of the indoor fan satisfies: n t2-t3, the rotating speed n of the indoor fan satisfies: n Wherein, T2 is a second temperature difference threshold value set in advance, Lb is a second thermal deformation shrinkage threshold value set in advance; n1, n2, n3 are respectively a first rotating speed of the indoor fan, a second rotating speed of the indoor fan and a third rotating speed of the indoor fan, and n1

[0014] In the preferred technical scheme of the present application, when the temperature difference T is less than T1 and the thermal deformation shrinkage L is less than La, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference, comprising: 0-t1, the rotating speed n of the indoor fan satisfies: n2 The frequency f of the compressor satisfies: f2 Wherein, T1 is a first temperature difference threshold value set in advance, La is a first thermal deformation shrinkage threshold value set in advance; T1

[0015] In the preferred technical scheme of the present application, when the temperature difference T satisfies T1 0-t1, the rotating speed n of the indoor fan satisfies: n1 t1-t2, the rotating speed n of the indoor fan satisfies: n2

[0016] In the preferred technical scheme of the present application, when the temperature difference T satisfies T1 0-t1, the rotating speed n of the indoor fan satisfies: n2 t1-t2, the rotating speed n of the indoor fan satisfies: n2

[0017] In the preferred technical scheme of the present application, when the temperature difference T is greater than T2 and the thermal deformation shrinkage L is less than La, or when the temperature difference T is less than T1 and the thermal deformation shrinkage L is greater than Lb; the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference, comprising: In 0-t1, the rotating speed n of the indoor fan satisfies: n1 In t1-t2, the rotating speed n of the indoor fan satisfies: n2

[0018] In the preferred technical solution of the present application, when the temperature difference T satisfies T1 In 0-t1, the rotating speed n of the indoor fan satisfies: n1 In t1-t2, the rotating speed n of the indoor fan satisfies: n2 In t2-t3, the rotating speed n of the indoor fan satisfies: n2

[0019] The second object of the present application is to provide an air conditioner control method, which comprises the control method for reducing the sound of air conditioner thermal deformation as described above.

[0020] The present application has the following advantages: The control method for reducing the sound of air conditioner thermal deformation provided by the present application obtains the thermal deformation shrinkage of the injection molding part inside the air conditioner according to the production material of the air conditioner, and obtains the temperature difference between the indoor temperature and the set temperature under the operation mode of the air conditioner according to the temperature sensing bag arranged inside the air conditioner. In the starting stage of the air conditioner, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference. The greater the thermal deformation shrinkage and / or the temperature difference, the smaller the refrigerating capacity or the heating capacity of the air conditioner. The control process of the present application occurs in the starting stage of the air conditioner, i.e. the time period between the air conditioner entering the refrigerating mode or the heating mode and the air conditioner normally refrigerating or heating. When the thermal deformation shrinkage and / or the temperature difference is greater, the heating capacity or the refrigerating capacity of the air conditioner is reduced to blow the injection molding part inside the air conditioner, so as to avoid the injection molding part generating relatively large deformation to cause the relative displacement between the parts and the mutual friction / collision. The heat exchange capacity, the evaporation or condensation temperature, and the intermediate temperature of the heat exchanger in the starting period of the air conditioner are reduced, so as to reduce the deformation amount of the injection molding part, make the stress release of the injection molding part slowly, and further make the slow deformation of the injection molding part. The effective inhibition of the thermal deformation abnormal sound of the injection molding part of the air conditioner is realized.

[0021] The application also provides an air conditioner control method, comprising the control method for reducing air conditioner thermal deformation sound as described above; the corresponding refrigerating capacity or heating capacity in the air conditioner starting stage is controlled through the thermal deformation shrinkage rate and the temperature difference; the relatively large deformation of the injection molding part is avoided to cause the relative displacement between the parts and the mutual friction / collision, the effective inhibition of the thermal deformation abnormal sound of the air conditioner injection molding part is realized, and the user's use comfort requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The flowchart of the control method of the application is shown in the figure; Figure 2 The flowchart of the control method in the embodiment 3 of the application is shown in the figure. DETAILED DESCRIPTION

[0023] The preferred embodiments of the application will be described in more detail with reference to the drawings. Although the preferred embodiments of the application are shown in the drawings, it should be understood that the application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the application more thorough and complete, and to fully convey the scope of the application to those skilled in the art.

[0024] The terms used in the application are only for the purpose of describing specific embodiments, and are not intended to limit the application. The singular forms "a", "said" and "the" used in the application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms "first", "second", "third" and the like can be used in the application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0026] Embodiment 1 As shown in the figure, the application provides a control method for reducing air conditioner thermal deformation sound, comprising: Figure 1 Obtaining the thermal deformation shrinkage rate of the injection molding part inside the air conditioner, and the temperature difference between the indoor temperature and the set temperature in the air conditioner operating mode; ​In a starting stage of the air conditioner, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference; wherein, the greater the thermal deformation shrinkage and / or the temperature difference, the smaller the refrigerating capacity or the heating capacity of the air conditioner; the smaller the thermal deformation shrinkage and / or the temperature difference, the greater the refrigerating capacity or the heating capacity of the air conditioner.

[0027] The control process of the present application occurs in the starting stage of the air conditioner, that is, the period between the air conditioner entering the refrigeration mode or the heating mode and the air conditioner entering the normal refrigeration or heating mode. When the thermal deformation shrinkage and / or the temperature difference is greater, the heating capacity or the refrigerating capacity of the air conditioner is reduced to blow the injection molding part inside the air conditioner, so as to avoid the injection molding part generating greater deformation to cause relative displacement between parts and mutual friction / collision. The heat exchange capacity, the evaporation or condensation temperature, and the intermediate temperature of the heat exchanger in the starting stage of the air conditioner are reduced, so as to reduce the deformation amount of the injection molding part, make the stress release of the injection molding part slowly proceed, and further make the injection molding part slowly deform. The effective suppression of the thermal deformation abnormal sound of the injection molding part of the air conditioner is achieved.

[0028] The present application also provides an air conditioner control method, which comprises a control method for reducing the thermal deformation sound of the air conditioner as described above; the refrigerating capacity or the heating capacity corresponding to the starting stage of the air conditioner is controlled by the thermal deformation shrinkage and the temperature difference; the injection molding part generating greater deformation to cause relative displacement between parts and mutual friction / collision is avoided, the effective suppression of the thermal deformation abnormal sound of the injection molding part of the air conditioner is achieved, and the requirement of user's use comfort is met.

[0029] Embodiment 2 As shown in Figure 1 A control method for reducing the thermal deformation sound of the air conditioner provided by the present application comprises: obtaining the thermal deformation shrinkage of the injection molding part inside the air conditioner, and the temperature difference between the indoor temperature and the set temperature in the operation mode of the air conditioner; In a starting stage of the air conditioner, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference; wherein, the greater the thermal deformation shrinkage and / or the temperature difference, the smaller the refrigerating capacity or the heating capacity of the air conditioner; the smaller the thermal deformation shrinkage and / or the temperature difference, the greater the refrigerating capacity or the heating capacity of the air conditioner.

[0030] When the thermal deformation shrinkage and / or the temperature difference is greater than the deformation shrinkage threshold value and / or the temperature difference threshold value, the refrigerating capacity or the heating capacity of the air conditioner is gradually increased to a preset value.

[0031] The gradual increase here refers to the stepwise adjustment of the refrigerating capacity or the heating capacity of the air conditioner, so that the refrigerating capacity or the heating capacity of the air conditioner gradually tends to a stable state. The stable state refers to the control logic of the air conditioner in the normal refrigeration or heating adjustment mode. When the air conditioner enters the normal heating or refrigeration mode, the control method thereof is the same as that of the prior art, which will not be described in detail here.

[0032] The application can set one thermal deformation shrinkage rate and temperature difference threshold, or two or more thermal deformation shrinkage rates and temperature difference thresholds; when the thermal deformation shrinkage rate and the temperature difference threshold are multiple, the thermal deformation shrinkage rate and the temperature difference threshold are divided into multiple ranges; according to the interval position of each range, the refrigerating capacity or the heating capacity of the air conditioner is gradually increased to the preset value.

[0033] The thermal deformation shrinkage rate in the application is mainly determined by the raw materials and structure of the injection molded part, and can be obtained by testing according to the production process of the air conditioner.

[0034] In the application, the temperature difference between the indoor temperature and the set temperature in the air conditioner running mode reflects the ability of the air conditioner indoor unit to obtain cold or heat, which is mainly determined by the running parameters of the air conditioner. Further, the air conditioner described in the application comprises a compressor, an indoor fan, and a sweep plate arranged at the air outlet; the refrigerating capacity or the heating capacity of the air conditioner is controlled by at least one of the following ways: by controlling the speed of the indoor fan; the greater the speed of the indoor fan, the greater the refrigerating capacity or the heating capacity of the air conditioner. Controlling the speed of the indoor fan to be low can reduce the heat exchange amount / evaporation (condensation) temperature in the air conditioner indoor unit during the start-up period, reduce the deformation amount of the injection molded part, or make the stress release of the injection molded part slow, so that the injection molded part deforms slowly.

[0036] by controlling the frequency of the compressor; the greater the frequency of the compressor, the greater the refrigerating capacity or the heating capacity of the air conditioner; controlling the frequency of the compressor to be low can reduce the intermediate temperature of the heat exchanger in the air conditioner indoor unit, reduce the deformation amount of the injection molded part, or make the stress release of the injection molded part slow, so that the injection molded part deforms slowly.

[0037] by controlling whether the sweep plate is opened; the refrigerating capacity or the heating capacity of the air conditioner when the sweep plate is opened is greater than that when the sweep plate is closed. The indoor unit of the air conditioner usually has an up-down sweep plate, and the cabinet type air conditioner usually has a left-right sweep plate. Closing the air deflector after the air conditioner starts can reduce the refrigerating capacity / heat capacity of the indoor unit blowing to the injection molded part inside the air conditioner, so as to avoid the injection molded part from generating large deformation and causing relative displacement between the parts to cause mutual friction / collision.

[0038] The air conditioner startup stage in the present application usually occurs within 15 minutes of the air conditioner starting up. In the present application, the refrigerating capacity / heat capacity of the air conditioner during the startup process gradually increases. This logic method is consistent with the existing air conditioner startup process, and does not lose the rapid refrigeration / heat efficiency during the startup period of the air conditioner during use. The existing air conditioner startup also gradually increases each parameter, and is not immediately increased to the target parameter upon startup, so it does not affect the rapid heating or rapid cooling effect during the air conditioner startup process.

[0039] Embodiment 3 The control method for reducing the sound of thermal deformation of an air conditioner provided in the present application comprises: obtaining the thermal deformation shrinkage rate of an injection molded part inside the air conditioner, and the temperature difference between the indoor temperature and the set temperature in the air conditioner operation mode; controlling the refrigerating capacity or heat capacity of the air conditioner according to the thermal deformation shrinkage rate and the temperature difference during the startup stage of the air conditioner; wherein the greater the thermal deformation shrinkage rate and / or temperature difference, the smaller the refrigerating capacity or heat capacity of the air conditioner; the smaller the thermal deformation shrinkage rate and / or temperature difference, the greater the refrigerating capacity or heat capacity of the air conditioner. And the refrigerating capacity or heat capacity adjustment of the air conditioner will not exceed the refrigerating capacity or heat capacity of the air conditioner during normal operation in the refrigeration or heating mode.

[0040] The present embodiment takes setting two thermal deformation shrinkage rate thresholds and two temperature difference thresholds as an example to explain the control logic of the present application in detail. In the present embodiment, T1 is a pre-set first temperature difference threshold, and La is a pre-set first thermal deformation shrinkage rate threshold; T2 is a pre-set second temperature difference threshold, and Lb is a pre-set second thermal deformation shrinkage rate threshold; n1, n2, and n3 are respectively a pre-set first speed of an indoor fan, a pre-set second speed of an indoor fan, and a pre-set third speed of an indoor fan, and n1 < n2 < n3, and n3 needs to be less than or equal to the speed of the indoor fan corresponding to the stable heating or cooling mode of the air conditioner; f1, f2, and f3 are respectively a pre-set first frequency of a compressor, a pre-set second frequency of a compressor, and a pre-set third frequency of a compressor, and f1 < f2 < f3, and f3 needs to be less than or equal to the frequency of the compressor corresponding to the stable heating or cooling mode of the air conditioner. t1, t2, and t3 are respectively three time points corresponding in turn after the air conditioner starts up, and t1 < t2 < t3, and t3 needs to be less than or equal to 15 minutes, i.e. to ensure that the transition adjustment stage from the startup of the air conditioner to the stable heating or cooling mode is within 15 minutes.

[0041] In the present embodiment, T1 and T2 divide the temperature difference into three range intervals, and La and Lb divide the thermal deformation shrinkage rate into three range intervals. The three range intervals corresponding to the temperature difference and the three range intervals corresponding to the thermal deformation shrinkage rate are matched one by one to form the nine cases and control logics as shown in Figure 2 The refrigerating capacity or heat capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and the temperature difference during the startup stage of the air conditioner. The greater the thermal deformation shrinkage rate and / or temperature difference, the smaller the refrigerating capacity or heat capacity of the air conditioner. The smaller the thermal deformation shrinkage rate and / or temperature difference, the greater the refrigerating capacity or heat capacity of the air conditioner. And the refrigerating capacity or heat capacity adjustment of the air conditioner will not exceed the refrigerating capacity or heat capacity of the air conditioner during normal operation in the refrigeration or heating mode.

[0042] (1) When the temperature difference T < T1, the thermal deformation shrinkage L < La, that is, the temperature difference is small and the thermal deformation shrinkage is small, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference, comprising: 0-t1min, the speed n of the indoor fan satisfies: n2 < n < n3; the frequency f of the compressor satisfies: f2 < f < f3; the air sweeping plate is opened, that is, all the air sweeping functions in the air conditioner can be controlled to be opened.

[0043] After t1, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method.

[0044] (2) When the temperature difference T satisfies T1 < T < T2, the thermal deformation shrinkage L < La, that is, the temperature difference is medium and the thermal deformation shrinkage is small, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference, comprising: 0-t1min, the speed n of the indoor fan satisfies: n1 < n < n2; the frequency f of the compressor satisfies: f2 < f < f3; the air sweeping plate is closed, that is, the up and down air sweeping functions of the split indoor unit and the left and right air sweeping functions of the cabinet indoor unit are forcibly closed; t1-t2min, the speed n of the indoor fan satisfies: n2 < n < n3; the frequency f of the compressor satisfies: f2 < f < f3; the air sweeping plate is closed, that is, the up and down air sweeping functions of the split indoor unit and the left and right air sweeping functions of the cabinet indoor unit are forcibly closed.

[0045] After t2, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is medium and the thermal deformation shrinkage is small, the frequency of the compressor is kept unchanged, so that the speed gradient of the indoor fan is increased, which is helpful to realize the stable adjustment of the air conditioner parameters.

[0046] (3) When the temperature difference T < T1, the thermal deformation shrinkage L satisfies La < L < Lb; that is, the temperature difference is small and the thermal deformation shrinkage is medium, the refrigerating capacity or the heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage and the temperature difference, comprising: 0-t1min, the speed n of the indoor fan satisfies: n1 < n < n2; the frequency f of the compressor satisfies: f2 < f < f3; the air sweeping plate is closed, that is, the up and down air sweeping functions of the split indoor unit and the left and right air sweeping functions of the cabinet indoor unit are forcibly closed; t1-t2min, the speed n of the indoor fan satisfies: n2 < n < n3; the frequency f of the compressor satisfies: f2 < f < f3; the air sweeping plate is closed, that is, the up and down air sweeping functions of the split indoor unit and the left and right air sweeping functions of the cabinet indoor unit are forcibly closed.

[0047] After t2, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is small and the shrinkage rate is medium, the indoor fan speed is kept constant, and the compressor frequency gradient is increased, which helps to realize the stable adjustment of the air conditioner parameters.

[0048] (4) When the temperature difference T satisfies T1 0-t1min, the indoor fan speed n satisfies: n2 t1-t2min, the indoor fan speed n satisfies: n2

[0049] After t2, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is small and the shrinkage rate is medium, the indoor fan speed is kept constant, and the compressor frequency gradient is increased, which helps to realize the stable adjustment of the air conditioner parameters.

[0050] (5) When the temperature difference T>T2 and the thermal deformation shrinkage rate LLa, that is, the temperature difference is large and the shrinkage rate is small, the cooling capacity or heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and the temperature difference, including: 0-t1min, the indoor fan speed n satisfies: n1 t1-t2min, the indoor fan speed n satisfies: n2

[0051] After t2, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is large and the shrinkage rate is small, the indoor fan speed and the compressor frequency are simultaneously increased, which helps to realize the stable adjustment of the air conditioner parameters.

[0052] (6) Or when the temperature difference T 0-t1min, the speed n of the indoor fan satisfies: n1 t1-t2min, the speed n of the indoor fan satisfies: n2

[0053] After t2, the air conditioner is controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is small and the shrinkage rate is large, the speed of the indoor fan and the frequency of the compressor are simultaneously increased in gradient, which helps to realize the stable adjustment of the air conditioner parameters.

[0054] (7) When the temperature difference T is greater than T2 and the thermal deformation shrinkage rate L satisfies La 0-t1min, the speed n of the indoor fan satisfies: n1 t1-t2min, the speed n of the indoor fan satisfies: n2 t2-t3min, the speed n of the indoor fan satisfies: n2

[0055] After t3, the air conditioner is controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference is large and the shrinkage rate is medium, the speed of the indoor fan and the frequency of the compressor are simultaneously increased in gradient, which helps to realize the stable adjustment of the air conditioner parameters.

[0056] (8) When the temperature difference T satisfies T1 0-t1min, the speed n of the indoor fan satisfies: n1 t1-t2min, the speed n of the indoor fan satisfies: n2 t2-t3min, the speed n of the indoor fan satisfies: n2

[0057] After t3, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference and the shrinkage rate are large, the speed of the indoor fan and the frequency of the compressor are simultaneously increased in gradient, which helps to realize the stable adjustment of the air conditioner parameters.

[0058] (9) When the temperature difference T>T2 and the thermal deformation shrinkage rate L>Lb, the cooling capacity or heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and the temperature difference, comprising: 0-t1min, the speed n of the indoor fan satisfies: n t1-t2min, the speed n of the indoor fan satisfies: n1 t2-t3min, the speed n of the indoor fan satisfies: n2

[0059] After t3, the air conditioner is logically controlled according to the pre-set heating mode or cooling mode control method. When the temperature difference and the shrinkage rate are large, the speed of the indoor fan and the frequency of the compressor are simultaneously increased in gradient, which helps to realize the stable adjustment of the air conditioner parameters.

[0060] In the prior art, after the air conditioner is started, its operating parameters, i.e. the compressor frequency, the indoor fan speed and the operation function of the air-sweeping plate, need to be quickly adjusted to stable parameters. This kind of quick adjustment pursues quickness in time, and has defects of unstable air conditioner operation and uneven refrigeration / heating rate. In the prior art, due to a large temperature difference between the indoor environment temperature and the air conditioner set temperature, the indoor unit speed and the compressor frequency during the start-up process of the air conditioner often reach a high level, so that the refrigeration / heating capacity is relatively high, thereby causing a large thermal expansion and cold contraction deformation of the injection molded part, and causing a large sound intensity and a long sound duration. The control logic method of the present application mainly determines the indoor unit speed and the compressor frequency during the 0-15 min start-up process of the air conditioner according to the thermal deformation shrinkage rate of the injection molded part and the size of the temperature difference between the indoor environment temperature and the air conditioner set temperature. In different temperature difference and thermal deformation shrinkage rate intervals, the initial parameters of the compressor frequency and the indoor fan speed are different within 0-t1 min, and the compressor frequency and the indoor fan speed within the time after t1 are gradually increased in a stepwise manner until the parameters under the stable operation of the air conditioner are reached. The logic method of the present application for controlling sound in a stepwise manner has the characteristics of smooth operation, high efficiency of refrigeration / heating and high comfort experience. The smooth operation of the air conditioner in the present application can also prolong the service life of the compressor and avoid wear caused by unstable operation of the compressor.

[0061] During the up-down or left-right air-sweeping process, the heat or cold from the air outlet of the air conditioner is brought into the air conditioner, which on the one hand reduces the heat or cold output from the air outlet, affecting the rapid heating or rapid cooling effect in the room, and on the other hand, makes the temperature difference of the injection molded part in the air conditioner larger, and the probability of thermal deformation and cold deformation of the internal injection molded part larger. During the logic operation process of the present application, by adjusting the up-down / left-right air-sweeping during the time period after the air conditioner is started, the following two effects can be achieved: 1. canceling the up-down / left-right air-sweeping function, the air-sweeping plate directly blowing into the room, which can avoid blowing cold or heat into the air conditioner, and slow down the thermal expansion and cold contraction deformation of the injection material to cause sound problems; 2. reducing the energy loss caused by blowing refrigeration / heating into the air conditioner due to the air-sweeping function, and enabling the consumer to experience the comfort brought by the room load to the maximum extent.

[0062] That is, when the present application controls the refrigeration or heating capacity according to the temperature difference and the thermal deformation shrinkage rate, the left-right air-sweeping function of the split indoor unit and the up-down air-sweeping function of the cabinet indoor unit are forcibly closed, which can reduce the energy loss caused by blowing refrigeration / heating into the air conditioner due to the air-sweeping function, and help to achieve rapid refrigeration or rapid heating. Therefore, the stepwise control logic of the present application in cooperation with the closing of the air-sweeping function helps to achieve rapid refrigeration or rapid heating of the air conditioner.

[0063] The refrigerating capacity / heat capacity of the air conditioner in the application gradually increases in the process of starting operation. The logical method is consistent with the process of starting operation of the air conditioner, and does not affect the rapid refrigeration / heat efficiency in the starting time period during use. In the logical operation process of the application, by adjusting the up / down / left / right air sweeping in the time period after the air conditioner starts, the sound problem caused by the thermal expansion and cold contraction deformation of the injection molding material due to the blowing of cold / heat into the air conditioner interior is avoided; the energy loss caused by the blowing of refrigeration / heat into the air conditioner interior is reduced; the effective suppression of the sound caused by the thermal deformation of the air conditioner injection molding part is realized; and the requirement of user comfort is met.

[0064] The relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The technology, methods, and devices known to those skilled in the related art can not be discussed in detail, but should be considered as part of the authorized description under appropriate circumstances. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. In the description of the application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of the parts themselves.

[0065] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device or feature being described with respect to the drawings in which the device or feature is illustrated. It is to be understood that the spatial or directional terms are intended to encompass different orientations of the device or feature in use or operation, in addition to the orientation depicted in the figures. For example, if the device or feature is inverted or rotated by 90°, a downward event or feature that would ordinarily be described as "above" or "up" would still be described as such. It is also to be understood that the spatial or directional terms are intended to encompass different orientations of the device or feature in use or operation, in addition to the orientation depicted in the figures. For example, if the device or feature is inverted or rotated by 90°, a downward event or feature that would ordinarily be described as "above" or "up" would still be described as such. It is also to be understood that the device or feature can be oriented in other ways (rotated at other angles), and the spatial or directional terms are to be interpreted accordingly.

[0066] In addition, it should be pointed out that the use of "first", "second", and / or the like terminology merely identifies an element as being a distinct element from another element, unless otherwise specified. As such, these terms are not intended to limit the scope of the present application, unless otherwise specified. The foregoing description details certain embodiments of the application. It will be appreciated, however, that no matter how detailed the above descriptions are, they are still only teaching the generic and exemplary of the application. Further, the above descriptions are not meant to limit the present application in any regard. Therefore, modifications and other variations of the described embodiments of the application will be apparent to those skilled in the art and can be made without departing from the scope or spirit of the application, and this application is not limited to any embodiment described herein.

Claims

1. A method for controlling the noise of air conditioner thermal deformation, characterized in that, include: The thermal deformation shrinkage rate of the internal injection molded parts of the air conditioner, as well as the temperature difference between the indoor temperature and the set temperature under the air conditioner's operating mode, are obtained. During the start-up phase of the air conditioner, the cooling or heating capacity of the air conditioner is controlled according to the thermal deformation shrinkage rate and temperature difference; wherein, the greater the thermal deformation shrinkage rate and / or temperature difference, the smaller the cooling or heating capacity of the air conditioner.

2. The control method for reducing the noise of air conditioner thermal deformation according to claim 1, characterized in that, When the heat deformation shrinkage rate and / or temperature difference are respectively greater than the deformation shrinkage rate threshold and / or temperature difference threshold, the cooling capacity or heating capacity of the air conditioner is controlled to gradually increase to the preset value.

3. The control method for reducing the noise of air conditioner thermal deformation according to claim 1, characterized in that, The air conditioner includes a compressor, an indoor fan, and a sweeping plate installed at the air outlet; the cooling or heating capacity of the air conditioner is controlled by at least one of the following methods: By controlling the speed of the indoor fan; the higher the speed of the indoor fan, the greater the cooling or heating capacity of the air conditioner. By controlling the compressor frequency; the higher the compressor frequency, the greater the cooling or heating capacity of the air conditioner. By controlling whether the air swing deflector is open or closed, the cooling or heating capacity of the air conditioner is greater when the air swing deflector is open than when the air swing deflector is closed.

4. The method for reducing the noise of air conditioner thermal deformation according to claim 3, characterized in that, When the temperature difference T > T2 and the heat distortion shrinkage rate L > Lb, controlling the cooling or heating capacity of the air conditioner based on the heat distortion shrinkage rate and the temperature difference includes: Within the range 0-t1, the indoor fan speed n satisfies: n < n1; the compressor frequency f satisfies: f < f1; and the air sweeper is closed. Within the time interval t1-t2, the indoor fan speed n satisfies: n1 < n < n2; the compressor frequency f satisfies: f1 < f < f2; and the air sweeper is closed. Within the time interval t2-t3, the indoor fan speed n satisfies: n2 < n < n3; the compressor frequency f satisfies: f2 < f < f3; and the air sweeper is closed. Wherein, T2 is the preset second temperature difference threshold, Lb is the preset second heat deformation shrinkage rate threshold; n1, n2, and n3 are the preset first speed, second speed, and third speed of the indoor fan, respectively, and n1 < n2 < n3; f1, f2, and f3 are the preset first frequency, second frequency, and third frequency of the compressor, respectively, and f1 < f2 < f3.

5. The control method for reducing the noise of air conditioner thermal deformation according to claim 4, characterized in that, When the temperature difference T < T1 and the heat deformation shrinkage rate L < La, controlling the cooling or heating capacity of the air conditioner based on the heat deformation shrinkage rate and the temperature difference includes: Within the time interval 0-t1, the rotational speed n of the indoor fan satisfies: n2 < n < n3; The compressor frequency f satisfies: f2 < f < f3; the air sweeper opens. Where T1 is a preset first temperature difference threshold, and La is a preset first thermal deformation shrinkage rate threshold; T1 < T2; La < Lb.

6. The control method for reducing the noise of air conditioner thermal deformation according to claim 5, characterized in that, When the temperature difference T satisfies T1 < T < T2 and the heat deformation shrinkage rate L < La, or when the temperature difference T < T1 and the heat deformation shrinkage rate L satisfies La < L < Lb; controlling the cooling capacity or heating capacity of the air conditioner based on the heat deformation shrinkage rate and the temperature difference includes: Within the range 0-t1, the indoor fan speed n satisfies: n1 < n < n2; the compressor frequency f satisfies: f2 < f < f3; and the air sweeper is closed. Within t1-t2, the indoor fan speed n satisfies: n2<n<n3; the compressor frequency f satisfies: f2<f<f3; and the air sweeper is closed.

7. The method for reducing the noise of air conditioner thermal deformation according to claim 5, characterized in that, When the temperature difference T satisfies T1 < T < T2, and the heat deformation shrinkage rate L satisfies La < L < Lb, controlling the cooling or heating capacity of the air conditioner based on the heat deformation shrinkage rate and the temperature difference includes: Within the time interval 0-t1, the indoor fan speed n satisfies: n2 < n < n3; the compressor frequency f satisfies: f1 < f < f2; and the air sweeper is closed. Within t1-t2, the indoor fan speed n satisfies: n2<n<n3; the compressor frequency f satisfies: f2<f<f3; and the air sweeper is closed.

8. The control method for reducing the noise of air conditioner thermal deformation according to claim 5, characterized in that, When the temperature difference T > T2 and the heat deformation shrinkage rate L < La, or when the temperature difference T < T1 and the heat deformation shrinkage rate L > Lb; controlling the cooling capacity or heating capacity of the air conditioner based on the heat deformation shrinkage rate and the temperature difference includes: Within the time interval 0-t1, the indoor fan speed n satisfies: n1 < n < n2; the compressor frequency f satisfies: f1 < f < f2; and the air sweeper is closed. Within t1-t2, the indoor fan speed n satisfies: n2<n<n3; the compressor frequency f satisfies: f2<f<f3; and the air sweeper is closed.

9. The control method for reducing the noise of air conditioner thermal deformation according to claim 5, characterized in that, When the temperature difference T > T2, and the heat deformation shrinkage rate L satisfies La < L < Lb, or when the temperature difference T satisfies T1 < T < T2, and the heat deformation shrinkage rate L > Lb; controlling the cooling capacity or heating capacity of the air conditioner based on the heat deformation shrinkage rate and the temperature difference includes: Within the range 0-t1, the indoor fan speed n satisfies: n1 < n < n2; the compressor frequency f satisfies: f < f1; and the air sweeper is closed. Within the time interval t1-t2, the indoor fan speed n satisfies: n2 < n < n3; the compressor frequency f satisfies: f1 < f < f2; and the air sweeper is closed. Within t2-t3, the indoor fan speed n satisfies: n2<n<n3; the compressor frequency f satisfies: f2<f<f3; and the air sweeper is closed.

10. An air conditioning control method, characterized in that, The method for reducing the noise caused by thermal deformation of an air conditioner, as described in any one of claims 1-9.

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