Air conditioner defrosting method and system, air conditioner and air conditioning equipment

Abstract

The invention provides an air conditioner defrosting method and system, an air conditioner and air conditioning equipment. The air conditioner defrosting method comprises the steps that S100, a defrosting mode preset by a user is obtained; s200, judging whether a preset defrosting condition is met or not in the heating mode; s300, if yes, whether defrosting is conducted according to a defrosting mode preset by a user or not is judged according to the user mode and / or the current time period; different defrosting modes are intelligently selected according to the requirements of the user and the using habits of the user in combination with the actual temperature condition, the defrosting efficiency is greatly improved, the technical problem that the indoor temperature is influenced and the user experience is influenced due to the fact that reversing defrosting is conducted frequently through the four-way valve is solved, the experience feeling and comfort degree of the user are further improved, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner defrosting, and in particular to an air conditioner defrosting method and system, an air conditioner, and air conditioning equipment. Background Art

[0002] At present, the defrosting method of the heating process of the air-conditioning system is mostly refrigeration defrosting, that is, the four-way valve is reversed, the refrigerant flows back, and the high-temperature refrigerant enters the heat exchanger for forced defrosting. This method is the simplest defrosting method, but during the defrosting process, the four-way valve is reversed, absorbing heat from the room, and the indoor fan is in the off state. The defrosting time is long, the indoor temperature will drop, and the heating effect will deteriorate, which greatly affects the user experience.

[0003] At present, there are various defrosting methods for air conditioners. Different defrosting methods have differences in energy efficiency and bring different user experiences. As for the current frequent reversing defrosting method, its adverse effect on indoor temperature has become an important factor affecting user experience. Therefore, the existing technology lacks a method for intelligently selecting defrosting methods according to different user needs in air conditioning heating and defrosting, so as to improve the overall performance of the air conditioner and the user experience.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide an air conditioner defrosting method and system, an air conditioner, and air-conditioning equipment to solve the technical problem in the related art that there is a lack of a method that can intelligently select the defrosting mode according to different user needs in air conditioning heating and defrosting, so as to improve the overall performance of the air conditioner and the user's experience.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: According to a first aspect of the present invention, the present invention provides an air conditioner defrosting method, comprising:

[0007] S100, obtaining a defrost mode preset by a user;

[0008] S200, determining whether the preset defrosting condition is met in the heating mode;

[0009] S300: If yes, determine whether to perform defrosting according to the defrost mode preset by the user based on the user mode and / or the current time period.

[0010] Specifically, in the heating mode, determining whether the preset defrosting condition is met includes:

[0011] If the current ambient temperature is greater than or equal to the first preset temperature, and the current heating mode lasts for a duration greater than or equal to the first preset duration, and the defrost temperature is continuously detected to be less than or equal to the second preset temperature within a second preset duration, it is determined that the preset defrost conditions are met.

[0012] Specifically, judging whether to perform defrosting according to the defrosting mode preset by the user according to the user mode and / or the current period includes:

[0013] If the user mode is the out-of-town mode, and / or the current period is the preset working period on a weekday, the four-way valve is controlled to switch to perform defrosting, otherwise, defrosting is performed according to the defrost mode preset by the user.

[0014] Specifically, the defrost mode preset by the user includes:

[0015] Energy saving mode, comfort mode, multi-system mode.

[0016] Specifically, the defrosting according to the defrost mode preset by the user includes:

[0017] If the defrost mode preset by the user is the energy-saving mode, it is determined whether the current ambient temperature is greater than or equal to the third preset temperature, and the temperature of the hot water is greater than or equal to the third preset temperature. If so, the four-way valve is controlled to switch to perform defrosting;

[0018] If not, heating and defrosting are performed by an electric heating device arranged in the indoor unit, and at the same time, the four-way valve is controlled to switch to perform defrosting.

[0019] Specifically, the defrosting according to the defrost mode preset by the user includes:

[0020] If the defrost mode preset by the user is the comfort mode, it is determined whether the current ambient temperature is greater than or equal to a fourth preset temperature, and the temperature of the hot water is greater than or equal to the fourth preset temperature. If so, the four-way valve is controlled to switch to perform defrosting; the fourth preset temperature is greater than the third preset temperature;

[0021] If not, the four-way valve is controlled to switch to perform defrosting, and at the same time, the electric heating device in the indoor unit is turned on to perform heating and defrosting.

[0022] Specifically, the multiple systems refer to multiple refrigeration or heating systems, and the defrosting according to the defrosting mode preset by the user also includes:

[0023] If the defrost mode preset by the user is a multi-system mode, each system is judged in turn whether it meets the preset defrost conditions. If so, the four-way valve is controlled to reverse for defrosting, and at the same time, any system in the remaining system is selected to increase the compressor frequency to compensate for the current ambient temperature.

[0024] According to a second aspect of the present invention, there is provided an air conditioner defrosting system, comprising:

[0025] Acquisition module: used to obtain the defrost mode preset by the user;

[0026] Control module: used to determine whether the preset defrosting conditions are met in heating mode. If so, determine whether to defrost according to the defrosting mode preset by the user based on the user mode and / or the current time period.

[0027] According to a third aspect of the present invention, there is provided an air conditioner suitable for the above-mentioned air conditioner defrosting method.

[0028] According to a fourth aspect of the present invention, there is provided an air conditioning device comprising a plurality of the above-mentioned air conditioners.

[0029] Beneficial effects:

[0030] The present invention determines whether to perform defrosting according to the defrost mode preset by the user by judging whether the user has set the user mode to the out-of-home mode and / or whether the current period is the preset working time on a weekday. The present invention is guided by user needs and intelligently selects different defrost modes according to the user needs and the user's usage habits in combination with actual temperature conditions, thereby greatly improving the defrost efficiency and solving the technical problem that frequent defrosting through reversing the four-way valve affects the indoor temperature and thus affects the user experience, further improving the user experience and comfort and achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a flow chart of an air conditioner defrosting method provided in a specific embodiment of the present invention;

[0032] Figure 2 is a schematic diagram of the components of an air conditioner defrosting system provided in a specific embodiment of the present invention;

[0033] Figure 3 is a flow chart of an air conditioner defrosting method provided in a specific embodiment of the present invention;

[0034] Figure 4 is a flow chart of a method for implementing defrosting of an air conditioner in an energy-saving mode provided in a specific embodiment of the present invention;

[0035] Figure 5 is a flowchart of a method for implementing defrosting of an air conditioner in a comfort mode provided in a specific embodiment of the present invention;

[0036] Figure 6 is a flow chart of a method for implementing defrosting of an air conditioner in a multi-system mode provided in a specific embodiment of the present invention;

[0037] Figure 7It is a flow chart of the air conditioner defrosting mode selection process provided in a specific implementation manner of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0039] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0040] Embodiment 1

[0041] The present embodiment provides a defrosting method for an air conditioner, by obtaining a defrost mode preset by a user; determining whether a preset defrost condition is met in a heating mode; if so, determining whether to defrost according to the defrost mode preset by the user based on the user mode and / or the current time period.

[0042] Specifically, the present invention intelligently selects different defrosting methods according to user needs, user usage habits and actual temperature conditions, which greatly improves the defrosting efficiency and solves the technical problem that frequent defrosting through four-way valve reversing affects the indoor temperature and thus affects the user experience, further improves the user experience and comfort, and greatly improves the energy-saving effect.

[0043] In the air conditioner defrosting method of this embodiment, see Figure 1 , air conditioner defrosting methods include:

[0044] S100, obtaining a defrost mode preset by a user;

[0045] S200, determining whether the preset defrosting condition is met in the heating mode;

[0046] S300: If yes, judging whether to perform defrosting according to the defrosting mode preset by the user according to the user mode and / or the current time period;

[0047] Specifically, in the heating mode, determining whether the preset defrosting condition is met includes:

[0048] If the current ambient temperature is greater than or equal to the first preset temperature, and the current heating mode lasts for a duration greater than or equal to the first preset duration, and the defrost temperature is continuously detected to be less than or equal to the second preset temperature within a second preset duration, it is determined that the preset defrost conditions are met.

[0049] What needs to be explained here is that after the user sets the defrost mode, he turns on the heating and determines whether the air-conditioning unit meets the defrost conditions. He can accurately grasp whether it is necessary to enter the defrost mode. If the defrost conditions are met, the defrost mode will be started, and the problems affecting the heating effect such as frost on the outdoor heat exchanger during the heating process can be dealt with in time to ensure the heating efficiency and effect of the air conditioner. If the preset conditions are not met, it will be determined not to enter the defrost mode and continue to keep heating, avoiding the energy waste caused by unnecessary defrost operations and the impact on the indoor temperature stability, which helps to improve the overall operating efficiency, energy saving and user comfort of the air conditioner.

[0050] It is understandable that under different ambient temperature conditions, the accumulated heating operation time and defrost temperature of the air conditioner will be different. Therefore, the present invention does not further limit the specific values ​​of the first preset temperature, the first preset time, the second preset time, and the second preset temperature. Among them, the ambient temperature is an important consideration. When the current ambient temperature is greater than or equal to the first preset temperature, it indicates that the ambient temperature is at a relatively high level, but this does not mean that there is no need to pay attention to the defrost situation. If the current heating mode lasts for a time greater than or equal to the first preset time, it means that the heating process has lasted for a period of time, and when the defrost temperature is detected to be less than or equal to the second preset temperature within the second preset time range, there may be a risk of frosting, so the frosting situation needs to be handled.

[0051] Preferably, the present invention sets the first preset temperature to 5°C, the first preset time to 50 minutes, the second preset temperature to -4°C, and the second preset time to 1 minute. This can more accurately determine whether defrosting operation is needed, keep the indoor temperature relatively stable, and provide users with a more comfortable use experience.

[0052] Specifically, judging whether to perform defrosting according to the defrosting mode preset by the user according to the user mode and / or the current period includes:

[0053] If the user mode is the out-of-town mode, and / or the current period is the preset working period on a weekday, the four-way valve is controlled to switch to perform defrosting, otherwise, defrosting is performed according to the defrost mode preset by the user.

[0054] See also Figure 3In the control method of this embodiment, after the user sets the defrost mode, the heating is turned on. When the air conditioner meets the defrost conditions, if the user sets the current user mode to the outgoing mode or is in the preset working period of a weekday, the four-way valve is controlled to switch to defrost, which reflects the precise consideration of user needs and equipment operation scenarios. In the outgoing mode or the working period of a weekday set by the user, by controlling the four-way valve to switch to defrost, it can be ensured that the air conditioner is in a good state when the user comes back, and energy is not wasted, which helps to maintain the performance of the equipment to meet the use requirements. The above-mentioned preset working period of a weekday can be specifically set by the user according to his actual working time, and the present invention does not further limit the specific values; on the other hand, if the user does not set the current mode to the outgoing mode and is not in the preset working period of a weekday, defrost can be performed according to the pre-set defrost mode, which helps to save energy, avoid unnecessary defrosting operations to consume energy, and at the same time reduce the impact of defrosting such as indoor temperature fluctuations, thereby improving the user's comfort and freedom of use during these periods.

[0055] Specifically, the defrost mode preset by the user includes:

[0056] Energy saving mode, comfort mode, multi-system mode.

[0057] It should be further explained that the user can preset the defrost mode before turning on the machine, which includes energy-saving mode, comfort mode and multi-system mode. The energy-saving mode is mostly defrosted through refrigeration, that is, the four-way valve is controlled to reverse for defrosting. The air conditioner runs in refrigeration mode and stops heating the room. This method can save energy but cannot guarantee the indoor heating effect. However, when the ambient temperature or the hot water temperature is too low, the electric heating device is turned on for heating; the comfort mode is mostly defrosted through electric heating. Electric defrost is to defrost the frosted area directly by installing an electric heating device on the air conditioner. Electric heating defrost can compensate for the reduction in indoor heat, which can both effectively defrost and It can ensure indoor heating, but electric heating is more power-consuming; the other is multi-system mode defrosting, which is suitable for multi-system air conditioners. When one of the systems meets the defrosting requirement, this system switches to downward defrosting through the four-way valve, that is, refrigeration defrosting, but the indoor temperature will drop, and it needs to be compensated by the remaining systems. Therefore, another system can be selected to increase the compressor frequency to compensate for the heat reduced by the system switching from refrigeration to defrosting due to the switching of the four-way valve. The above three defrosting methods are the methods used in this embodiment, which provide users with a variety of defrosting modes, can meet the different needs of users, and improve the overall flexibility of use.

[0058] Specifically, the defrosting according to the defrost mode preset by the user includes:

[0059] If the defrost mode preset by the user is the energy-saving mode, it is determined whether the current ambient temperature is greater than or equal to the third preset temperature, and the temperature of the hot water is greater than or equal to the third preset temperature. If so, the four-way valve is controlled to switch to perform defrosting;

[0060] If not, heating and defrosting are performed by an electric heating device arranged in the indoor unit, and at the same time, the four-way valve is controlled to switch to perform defrosting.

[0061] It is understandable that in the air-conditioning heating process, there are usually two main heating methods, one is heat pump heating, and the other is auxiliary electric heating. During heat pump heating, the air-conditioning system compresses the refrigerant through a compressor, allowing the refrigerant to circulate under different pressure and temperature conditions, thereby achieving heat transfer. In this process, hot water will be generated, and the temperature of the hot water can reflect the heating operation status of the air-conditioning system. This method can ensure the defrosting effect while avoiding affecting the energy-saving effect of the entire air-conditioning system.

[0062] See also Figure 4 In the defrosting method for the air conditioner of the present embodiment, if the ambient temperature is greater than or equal to the third preset temperature, and the hot water temperature is greater than or equal to the third preset temperature, defrosting is performed by reversing the four-way valve, that is, the air conditioner operates in cooling mode and stops heating the room. This method is direct and energy-saving, and can effectively utilize energy and reduce energy consumption under appropriate temperature conditions. If the above conditions are not met, the indoor electromechanical heating device is used for heating and defrosting, and the four-way valve is controlled to reverse for defrosting. This takes into account the defrosting needs under different temperature environments. Although controlling the four-way valve to reverse for defrosting is energy-saving, it affects the comfort level. This method meets the energy-saving needs of users.

[0063] Furthermore, the third preset temperature can be set according to the actual needs of the user. The present invention does not further limit the actual value of the third preset temperature. In this embodiment, the first preset temperature is preferably 17°C. When the ambient temperature and the hot water temperature are both greater than or equal to 17°C, defrosting is performed by reversing the four-way valve, that is, defrosting by refrigeration. When it is lower than 17°C, heating is performed by the electric heating device in the indoor unit, and the four-way valve reversing is controlled to defrost, thereby further improving the energy-saving effect. Therefore, in the energy-saving mode, defrosting is performed more by refrigeration, which can further reduce energy consumption.

[0064] Specifically, the defrosting according to the defrost mode preset by the user includes:

[0065] If the defrost mode preset by the user is the comfort mode, it is determined whether the current ambient temperature is greater than or equal to a fourth preset temperature, and the temperature of the hot water is greater than or equal to the fourth preset temperature. If so, the four-way valve is controlled to switch to perform defrosting; the fourth preset temperature is greater than the third preset temperature;

[0066] If not, the four-way valve is controlled to switch to perform defrosting, and at the same time, the electric heating device in the indoor unit is turned on to perform heating and defrosting.

[0067] See also Figure 5 In the defrosting method for the air conditioner of the present embodiment, if the ambient temperature and the hot water temperature are both greater than or equal to the fourth preset temperature, defrosting is performed by reversing the four-way valve. This utilizes the direct and relatively energy-saving characteristics of the four-way valve reversing defrosting under certain temperature conditions. If the above temperature conditions are not met, the four-way valve reversing can be used to simultaneously start the indoor electromechanical heating device for heating and defrosting. The indoor electromechanical heating device can increase the indoor temperature and accelerate the defrosting process, providing additional heat supplement to meet the user's comfort needs and ensure that defrosting can be effectively performed under low temperatures, thereby ensuring the normal operation of the air-conditioning system. In the comfort mode, this multi-mode defrosting selection is more inclined to ensure the indoor heating effect to maintain the comfortable environment expected by the user. Although it may consume more energy, it well reflects the comfort mode's emphasis on indoor comfort assurance.

[0068] Furthermore, the fourth preset temperature can be set according to the actual needs of the user. The present invention does not further limit the actual value of the fourth preset temperature. In this embodiment, the first preset temperature is preferably 19°C. When the ambient temperature and the hot water temperature are both greater than or equal to 19°C, defrosting is performed by reversing the four-way valve, that is, defrosting by refrigeration. When it is lower than 19°C, defrosting is performed by reversing the four-way valve, and the electric heating device in the indoor unit is turned on for heating and defrosting. Generally speaking, heating is generally set at around 20°C, and the most comfortable indoor temperature is usually considered to be between 18°C ​​and 22°C. Therefore, defrosting by electric heating in the comfort mode can further improve the user experience.

[0069] It can be understood that the fourth preset temperature is greater than the third preset temperature. This is because the fourth preset temperature is the temperature closest to human needs in the comfort mode, that is, the indoor temperature is usually kept at a higher level to meet human comfort. When the temperature is lower than this value, temperature compensation must be paid attention to. The third preset temperature is lower than the fourth preset temperature, which can ensure that when the temperature drops in the energy-saving mode, the refrigeration and defrosting mode can be preferred, thereby further reducing energy consumption and improving energy-saving effects.

[0070] Specifically, the multiple systems refer to multiple refrigeration or heating systems, and the defrosting according to the defrosting mode preset by the user also includes:

[0071] If the defrost mode preset by the user is a multi-system mode, each system is judged in turn whether it meets the preset defrost conditions. If so, the four-way valve is controlled to reverse for defrosting, and at the same time, any system in the remaining system is selected to increase the compressor frequency to compensate for the current ambient temperature.

[0072] See also Figure 6 The multi-system mode is suitable for multi-system air conditioners. If the user pre-sets the multi-system mode for defrosting, when one of the systems meets the preset conditions for defrosting, this system will defrost through the four-way valve reversing, and one system will be selected from the remaining systems to increase the compressor frequency to compensate for the heat reduced by the system through the four-way valve reversing defrosting due to the reversing, which can ensure the overall heat balance during the defrosting process and maintain the normal operation of the air conditioner.

[0073] See also Figure 7 The working principle of the present invention is described below by using specific examples:

[0074] When the air conditioner is in heating operation, the heat exchanger will be frosted due to the heat being absorbed and the temperature will drop. In order to effectively heat and prevent the heat exchanger from being damaged due to long-term frosting, the heat exchanger must be defrosted. The most commonly used method is the four-way valve reversal, that is, refrigeration defrosting. This method is the simplest and most energy-saving. However, refrigeration defrosting absorbs indoor heat, which will cause the indoor temperature to drop and affect the user experience. Therefore, defrosting should be carried out in combination with the actual situation and user needs. It can not only effectively defrost but also improve user comfort and save energy when necessary. The specific implementation steps are as follows:

[0075] Step 1: Before turning on the machine, the user can preset the defrost mode, energy-saving mode, comfort mode, and multi-system mode;

[0076] The energy-saving mode is usually switched by a four-way valve. The air conditioner runs in cooling mode and stops heating the room, i.e., defrosting. This mode can save energy but cannot guarantee the indoor heating effect. However, when the ambient temperature or the hot water temperature is too low, the electric heating device is turned on for heating and defrosting.

[0077] The comfort mode is mostly defrosted by electric heating, that is, the frosted parts are defrosted directly by installing an electric heating device. Electric heating defrosting can compensate for the reduction of indoor heat, which can effectively defrost and ensure indoor heating, but electric heating consumes more electricity.

[0078] Multi-system mode: This mode is applicable to multi-system air conditioners. When one of the systems meets the requirement of defrosting, this system controls the four-way valve to switch to defrost, and the other system increases the compressor frequency to compensate for the heat loss of the system through the four-way valve switching defrosting due to refrigeration defrosting. The above three defrosting modes are the methods used in this example;

[0079] Step 2: After setting the defrost mode, the user turns on the heating to determine whether the unit meets the defrost conditions. For example, when the ambient temperature is ≥5°C, the cumulative heating operation time is ≥50 minutes, and the defrost temperature is detected to be ≤-4°C for 1 minute, the defrost mode can be entered. Under different ambient temperature conditions, the time and defrost temperature will be different, so specific settings can be made according to the actual situation of the user;

[0080] Step 3: If the defrosting conditions are met, first determine whether the user is at home. If the user is not at home, refrigeration defrosting is the best defrosting method, because in refrigeration defrosting, even if the indoor temperature drops, the user cannot feel it, and the defrosting duration is limited, and it will not be in the refrigeration state for a long time. It can be determined by determining whether the user has set the out-of-home mode and whether it is the daytime working period set by the user. If the user does not belong to the above two modes, that is, it does not meet the out-of-home mode set by the user, and does not meet the weekday working period set by the user, the user needs to select one of the preset defrosting modes for defrosting. The specific selection process is as follows:

[0081] (1) If the user selects the energy-saving mode, it is determined whether the ambient temperature Tring and the temperature of the hot water Twater exceed a certain temperature value Te. If they are greater than or equal to Te, the unit can defrost by reversing the four-way valve. This method is the most direct and energy-saving, but it will affect the comfort. If they are less than Te, the indoor electric heating is turned on for defrosting, and the four-way valve is controlled to reverse the defrosting.

[0082] (2) If the user selects the comfort mode, it is also determined whether the ambient temperature Tring and the temperature of the hot water Twater exceed a certain temperature value Te' (Te is different from Te', and Te'>Te). If it is greater than or equal to Te', defrosting can be performed directly by reversing the four-way valve. At this time, the temperature drop caused by the reversing of the four-way valve will not be obvious. If it is less than Te', it is necessary to turn on the four-way valve reversing and turn on the indoor electric heating at the same time;

[0083] It should be noted that Te or Te' is the value closest to the required temperature in the two modes respectively. Te' is closer to the human body's comfortable temperature. When it is lower than this value, temperature compensation should be paid attention to.

[0084] Step 3: When the defrost exit conditions are met, the four-way valve switches back, the electric heating is turned off, and heating continues. The exit conditions may include:

[0085] When the defrost temperature is greater than or equal to the fifth preset temperature, or the hot water temperature is less than or equal to the sixth preset temperature, or the high pressure temperature is greater than or equal to the seventh preset temperature, you can exit defrosting and continue heating. For example: if the defrost temperature is detected to be ≥20℃ for 3 consecutive seconds, or the hot water outlet temperature is detected to be ≤5℃ for 3 consecutive seconds, or the high pressure temperature is detected to be ≥57℃ for 3 consecutive seconds, you can exit defrosting mode and continue heating if one of the above conditions is met.

[0086] It should be noted here that the present embodiment determines whether to perform defrosting according to the defrost mode pre-set by the user by judging whether the user has set the user mode to the out-of-town mode and / or whether the current period is the preset working day. The present invention is guided by user needs and intelligently selects different defrost modes according to user needs, user usage habits and actual temperature conditions, thereby greatly improving the defrost efficiency and solving the technical problem that frequent defrosting through four-way valve reversing affects the indoor temperature and thus affects the user experience, further improving the user experience and comfort and achieving energy-saving effects.

[0087] Embodiment 2

[0088] This embodiment provides an air conditioner defrosting system. Figure 2 ,include:

[0089] Acquisition module 100: used to acquire the defrost mode preset by the user;

[0090] Control module 200: used to determine whether the preset defrosting condition is met in the heating mode. If so, determine whether to perform defrosting according to the defrosting mode preset by the user based on the user mode and / or the current time period.

[0091] It should be noted here that the air conditioner defrost system provided in the present embodiment determines whether to defrost according to the defrost mode pre-set by the user by judging whether the user has set the user mode to the outing mode and / or whether the current period is the preset working day. The present invention is guided by user needs and intelligently selects different defrost modes according to the user's needs and usage habits combined with actual temperature conditions, thereby greatly improving the defrost efficiency and solving the technical problem that frequent defrosting through four-way valve reversing affects the indoor temperature and thus affects the user experience, further improving the user experience and comfort, achieving energy-saving effects, realizing the optimal allocation of energy, and further improving the overall energy efficiency ratio of the air-conditioning system.

[0092] Embodiment 3

[0093] According to an embodiment of the present invention, an air conditioner is provided. The air conditioner of this embodiment is suitable for the above-mentioned air conditioner defrosting method, and the method includes: obtaining a defrost mode preset by a user; judging whether the preset defrost conditions are met in the heating mode; if so, judging whether to defrost according to the defrost mode preset by the user based on the user mode and / or the current time period.

[0094] It should be noted here that the present embodiment adopts the above-mentioned air conditioner defrosting method, and determines whether to defrost according to the defrost mode pre-set by the user by judging whether the user has set the user mode to the outing mode, and / or whether the current period is the preset working day. The present embodiment is guided by user needs, and intelligently selects different defrosting methods according to user needs, user usage habits and actual temperature conditions, which greatly improves the defrosting efficiency, solves the technical problem that frequent defrosting through four-way valve reversing affects the indoor temperature and thus affects the user experience, further improves the user experience and comfort, and achieves energy-saving effects.

[0095] Embodiment 4

[0096] According to an embodiment of the present invention, an air conditioning device is provided. The air conditioning device of this embodiment includes a plurality of air conditioners described in Embodiment 3.

[0097] It should be noted here that the present embodiment adopts the above method, by judging whether the user sets the user mode to the out-of-home mode, and / or whether the current time is the preset working period of the working day, to judge whether to defrost according to the defrost mode preset by the user. On the one hand, the present embodiment greatly improves the defrost efficiency and solves the problem that the traditional air conditioner may have untimely defrosting or excessive defrosting. The air conditioner provided in the present embodiment can intelligently select the defrost mode based on multiple factors, avoids invalid defrosting operations, and ensures that defrosting can be carried out quickly and effectively when it is needed. On the other hand, the present embodiment solves the problem that the indoor temperature is affected by frequent defrosting through the reversing direction of the four-way valve. The frequent reversing direction of the four-way valve will cause the indoor temperature to fluctuate, thereby affecting the user experience. The defrosting method of the air conditioner avoids this situation, so that the indoor temperature can be kept relatively stable, which greatly improves the user's comfort. The present embodiment can flexibly adjust the defrost strategy according to the user's usage habits and actual temperature conditions, avoid unnecessary energy consumption, and achieve efficient use of energy while meeting the defrosting needs.

[0098] Embodiment 5

[0099] This embodiment further provides an electronic device, the electronic device comprising:

[0100] A memory; and a processor, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the air conditioner defrosting method is implemented. The computer device can be broadly a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected via a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices via a network. When the computer program is executed by the processor, the steps of the method of the present invention are performed.

[0101] It should be noted here that the present embodiment adopts the above-mentioned method to determine whether to perform defrosting according to the defrost mode pre-set by the user by judging whether the user has set the user mode to the outing mode and / or whether the current period is the preset working day. The present invention is guided by user needs and intelligently selects different defrosting methods according to user needs, user usage habits and actual temperature conditions, which greatly improves the defrost efficiency and solves the technical problem that frequent defrosting through four-way valve reversing affects the indoor temperature and thus affects the user experience, further improves the user experience and comfort, and achieves energy-saving effects.

[0102] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0103] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0104] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0105] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0106] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A defrosting method for an air conditioner, characterized in that: include: S100, obtaining a defrost mode preset by a user; S200, determining whether the preset defrosting condition is met in the heating mode; S300: If yes, determine whether to perform defrosting according to the defrost mode preset by the user based on the user mode and / or the current time period.

2. The air conditioner defrosting method according to claim 1, characterized in that: In the heating mode, judging whether the preset defrosting condition is met includes: If the current ambient temperature is greater than or equal to the first preset temperature, and the current heating mode lasts for a duration greater than or equal to the first preset duration, and the defrost temperature is continuously detected to be less than or equal to the second preset temperature within a second preset duration, it is determined that the preset defrost conditions are met.

3. The air conditioner defrosting method according to claim 1, characterized in that: The determining whether to perform defrosting according to the defrosting mode preset by the user according to the user mode and / or the current period includes: If the user mode is the out-of-town mode, and / or the current period is the preset working period on a weekday, the four-way valve is controlled to switch to perform defrosting, otherwise, defrosting is performed according to the defrost mode preset by the user.

4. The air conditioner defrosting method according to claim 3, characterized in that: The defrost mode preset by the user includes: Energy saving mode, comfort mode, multi-system mode.

5. The air conditioner defrosting method according to claim 4, characterized in that: The defrosting according to the defrosting mode preset by the user includes: If the defrost mode preset by the user is the energy-saving mode, it is determined whether the current ambient temperature is greater than or equal to the third preset temperature, and the temperature of the hot water is greater than or equal to the third preset temperature. If so, the four-way valve is controlled to switch to perform defrosting; If not, heating and defrosting are performed by an electric heating device arranged in the indoor unit, and at the same time, the four-way valve is controlled to switch to perform defrosting.

6. The air conditioner defrosting method according to claim 5, characterized in that: The defrosting according to the defrosting mode preset by the user includes: If the defrost mode preset by the user is the comfort mode, it is determined whether the current ambient temperature is greater than or equal to a fourth preset temperature, and the temperature of the hot water is greater than or equal to the fourth preset temperature. If so, the four-way valve is controlled to switch to perform defrosting; the fourth preset temperature is greater than the third preset temperature; If not, the four-way valve is controlled to switch to perform defrosting, and at the same time, the electric heating device in the indoor unit is turned on to perform heating and defrosting.

7. The air conditioner defrosting method according to claim 4, characterized in that: The multiple systems refer to multiple refrigeration or heating systems, and the defrosting is performed according to the defrosting mode preset by the user, and further includes: If the defrost mode preset by the user is a multi-system mode, each system is judged in turn whether it meets the preset defrost conditions. If so, the four-way valve is controlled to reverse for defrosting, and at the same time, any system in the remaining system is selected to increase the compressor frequency to compensate for the current ambient temperature.

8. An air conditioner defrosting system, characterized in that: include: An acquisition module (100): used to acquire a defrosting mode preset by a user; Control module (200): used to determine whether the preset defrosting condition is met in the heating mode, and if so, determine whether to perform defrosting according to the defrosting mode preset by the user based on the user mode and / or the current time period.

9. An air conditioner, characterized in that: The air conditioner defrosting method is applicable to any one of claims 1 to 7.

10. An air conditioning device, characterized in that: The invention comprises a plurality of air conditioners as claimed in claim 9.

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