An air conditioning system

Abstract

The application discloses an air conditioning system, comprising: a compressor; a first temperature detecting element for detecting the oil pool temperature of the compressor; a solar power generation module for converting solar energy into electric energy and storing; a solar heat storage module for converting solar energy into heat energy and storing; a control module configured to control the preheating state of the oil pool by the solar power generation module and the solar heat storage module respectively according to the oil pool temperature before the compressor starts. The air conditioning system of the application improves the solar energy utilization rate by setting the solar power generation module and the solar heat storage module, greatly prolonging the preheating time. The solar power generation module or the solar heat storage module is selected for preheating according to the compressor oil pool temperature, fully utilizing the advantages of high heat conversion rate and fast heating speed of the solar power generation module and the advantages of large energy storage and long heating duration of the solar heat storage module.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners. BACKGROUND

[0002] In an air conditioning system, the most likely phenomenon of empty oil occurs when the compressor starts at low temperature or starts again after a long stop. This is because a large amount of refrigerant will migrate due to low temperature, and the refrigerant will dissolve with the lubricating oil in the compressor. The lower the temperature, the higher the solubility of refrigerant and lubricating oil. As the temperature continues to drop, the refrigerant will continue to migrate, so the refrigerant will fully mix with the lubricating oil in the compressor. Therefore, when the air conditioning system starts, a large amount of lubricating oil in the compressor is discharged with the refrigerant. At the same time, in a low temperature environment, due to the difference in density between the refrigerant and the lubricating oil, a stratification phenomenon occurs, in which the refrigerant is at the bottom and the lubricating oil is at the top. When the compressor is working, the lubricating oil located at the top cannot enter the compressor through the oil return hole in the first time, so that the oil in the compressor is gradually consumed, resulting in the phenomenon of empty oil in the compressor, and ultimately leading to insufficient lubrication of the compressor, thereby affecting the stable and reliable operation of the air conditioning system.

[0003] At present, the method adopted for this problem is to install a set of electric heating belt for heating lubricating oil during the shutdown stage of the compressor in the crankcase. The temperature of the lubricating oil is raised by heating through the electric heating belt, so as to avoid the migration of the refrigerant. However, this preheating method has low efficiency, long preheating time, poor user experience, fixed heating power, high energy consumption, and is often complained by users. SUMMARY

[0004] The present application aims to solve the technical problem that the refrigerant is prone to migrate when the air conditioner compressor starts at low temperature in the prior art, which leads to the operation of the compressor with insufficient oil, thereby affecting the reliability of the air conditioning system. The present application proposes an air conditioning system, which can solve the above problems.

[0005] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0006] An air conditioning system, comprising:

[0007] a compressor;

[0008] a first temperature detection element for detecting the oil pool temperature of the compressor;

[0009] a solar power generation module for converting solar energy into electrical energy and storing;

[0010] a solar heat storage module for converting solar energy into heat energy and storing;

[0011] a control module configured to control the solar power generation module and the solar heat storage module to preheat the oil pool according to the oil pool temperature before the compressor starts.

[0012] In some embodiments, when the oil pool temperature does not reach an intermediate limit value of the preset temperature, the control module controls the solar power generation module to preheat the oil pool.

[0013] When the oil pool temperature reaches the intermediate limit value of the preset temperature, the control module controls the solar heat storage module to preheat the oil pool.

[0014] When the oil pool temperature reaches an upper limit value of the preset temperature, the control module controls the solar power generation module and the solar heat storage module to stop preheating the oil pool.

[0015] In some embodiments, the air conditioning system further comprises:

[0016] a heating belt, and the control module controls the solar power generation module to preheat the oil pool by controlling the solar power generation module to supply power to the heating belt.

[0017] In some embodiments, the heating belt has a plurality of heating belts, and the control module further comprises controlling the number of the heating belts to be powered according to the oil pool temperature.

[0018] In some embodiments, the control module further comprises being configured to:

[0019] obtaining the user's habitual start time, and within a preset time range before the user's habitual start time, if the oil pool temperature does not reach the upper limit value of the preset temperature, the control module controls the solar power generation module to supply power to all the heating belts to preheat the oil pool.

[0020] In some embodiments, the control module further comprises being configured to:

[0021] setting a lower limit value of the usage amount of the solar power generation module, and when the solar power generation module is used to preheat the oil pool before the preset time range, if the amount of electricity stored in the solar power generation module reaches the lower limit value of the usage amount, the solar power generation module is no longer used to preheat the oil pool, and the lower limit value of the usage amount meets the requirement of supplying power to all the heating belts and lasting for a time length corresponding to the preset time range.

[0022] In some embodiments, the air conditioning system further comprises:

[0023] a second temperature detection element for detecting the outdoor ambient temperature;

[0024] The control module further comprises a configuration for controlling the signal acquisition frequency of the first temperature detection element according to the outdoor environment temperature.

[0025] In some embodiments, the solar power generation module comprises:

[0026] a solar panel for converting solar energy into electric energy;

[0027] a battery for storing the electric energy converted by the solar panel.

[0028] In some embodiments, the solar heat storage module comprises:

[0029] a solar heat collector for converting solar energy into heat energy;

[0030] a heat accumulator for storing the heat energy converted by the solar heat collector.

[0031] In some embodiments, the air conditioning system further comprises:

[0032] a third temperature detection unit for detecting the temperature of the solar heat storage module;

[0033] The control module further comprises a configuration for controlling the start of the preheating of the oil pool by the solar heat storage module, and when the temperature of the solar heat storage module reaches a preset temperature value, the control module controls the start of the preheating of the oil pool by the solar heat storage module, otherwise, the control module controls the start of the preheating of the oil pool by the solar power generation module.

[0034] Compared with the prior art, the advantages and positive effects of the present application are:

[0035] The air conditioning system of the present application improves the utilization rate of solar energy by setting the solar power generation module and the solar heat storage module, and greatly prolongs the preheating time. Compared with the traditional heating belt preheating method, the preheating method of the present application has low energy consumption and is green and environmentally friendly. According to the temperature of the compressor oil pool, the solar power generation module or the solar heat storage module is selected for preheating, which fully utilizes the advantages of high heat conversion rate and fast heating speed of the solar power generation module and the advantages of large energy storage capacity and long heating duration of the solar heat storage module. Before the compressor starts, the solar power generation module or the solar heat storage module is reasonably selected for preheating according to the temperature of the oil pool.

[0036] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0038] Figure 1 A schematic diagram of an embodiment of the air conditioning system of the present application is shown;

[0039] Figure 2 A schematic diagram of the preheating control method of the compressor when there is no user starting is shown;

[0040] Figure 3 A schematic diagram of the oil pool temperature transmission interval under different ambient temperatures is shown;

[0041] Figure 4 A schematic diagram of the preheating method under different oil pool temperatures is shown;

[0042] Figure 5 A schematic diagram of the preheating method before user starting is shown;

[0043] Figure 6 A schematic diagram of the preheating control method of the compressor when there is user starting is shown;

[0044] Figure 7 A schematic diagram of the control method when the heat of the heat accumulator is insufficient is shown;

[0045] Figure 8 A schematic diagram of the control method when the battery power reaches the minimum threshold is shown;

[0046] Figure 9 A schematic block diagram of the solar power generation module is shown;

[0047] Figure 10 A schematic block diagram of the solar heat storage module is shown. Embodiment

[0048] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0049] It should be noted that in the description of the present application, the terms indicating the direction or positional relationship of "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] <Basic operating principle of air conditioner>

[0052] The air conditioning system in this application performs the refrigerant cycle of the system by using the compressor, condenser, electronic expansion valve and evaporator. The refrigerant cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been adjusted and heat exchanged.

[0053] The compressor compresses the refrigerant gas in a low-temperature and low-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0054] The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by exchanging heat with the material to be cooled by utilizing the latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioner can adjust the temperature of the indoor space.

[0055] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0056] The indoor heat exchanger and the outdoor heat exchanger are used as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

[0057] <Composition of the indoor unit>

[0058] Referring to Figure 1 As shown in the drawings, according to the air conditioning system in some embodiments of the present application, an indoor unit (not shown in the drawings) is installed in an indoor space. The indoor unit is connected to an outdoor unit installed in an outdoor space through a pipe. The outdoor unit can be provided with a compressor 11, an outdoor heat exchanger, an outdoor fan, an expansion device and similar components of a refrigeration cycle, and the indoor unit can also be provided with an indoor heat exchanger and an indoor fan.

[0059] When the temperature is low, the refrigerant migrating into the interior of the compressor will dissolve with the lubricating oil, so when the air conditioning system starts, a large amount of lubricating oil in the interior of the compressor 11 is discharged from the compressor 11 along with the refrigerant. Therefore, the compressor 11 is most prone to the empty oil phenomenon when it starts at low temperature or starts again after a long period of stoppage. In order to solve this technical problem, in some embodiments of the present application, a first temperature detection element 12, a solar power generation module 13, a solar heat storage module 14 and a control module 15 are further included.

[0060] The first temperature detection element 12 is used to detect the oil pool temperature of the compressor 11 and send the detection result to the control module 15.

[0061] The solar power generation module 13 is used to convert solar energy into electrical energy and store it. The converted electrical energy can be used to preheat the oil pool. Whether to start the preheating of the oil pool by the solar power generation module 13 is controlled by the control module 15. It can be understood that when certain setting conditions are met, the control module 15 can control the start of the preheating of the oil pool by the solar power generation module 13.

[0062] The solar heat storage module 14 is used to convert solar energy into heat energy and store it. The converted heat energy can be used to preheat the oil pool. Whether to start the preheating of the oil pool by the solar heat storage module 14 is controlled by the control module 15. It can be understood that when certain setting conditions are met, the control module 15 can control the start of the preheating of the oil pool by the solar heat storage module 14.

[0063] The control module 15 is configured to control the preheating state of the oil pool by the solar power generation module 13 and the solar heat storage module 14 respectively according to the oil pool temperature before the compressor 11 starts.

[0064] It can be understood that the preheating state of the oil pool includes starting preheating or not preheating. When the solar power generation module 13 is controlled to start preheating the oil pool, the electrical energy converted by the solar power generation module 13 can be used to preheat the oil pool, so as to raise the temperature of the oil pool. When the solar heat storage module 14 is controlled to start preheating the oil pool, the thermal energy converted by the solar heat storage module 14 can be used to preheat the oil pool, so as to raise the temperature of the oil pool.

[0065] After the temperature of the oil pool is raised, the problem that the refrigerant migrates into the compressor and dissolves with the lubricating oil when the temperature is low can be solved accordingly, and the technical problem that when the air conditioning system starts, a large amount of lubricating oil in the compressor is discharged out of the compressor with the refrigerant, causing the compressor to be short of oil can be avoided. At the same time, the technical problem that in a low-temperature environment, due to the difference in density between the refrigerant and the lubricating oil, stratification phenomenon occurs, i.e., the refrigerant is at the bottom and the lubricating oil is at the top, causing the lubricating oil at the top to not enter the compressor through the oil return hole in the first time when the compressor is working, so that the oil amount in the compressor is gradually consumed, resulting in the condition that the compressor is short of oil, and finally causing the compressor to be insufficiently lubricated, affecting the stable and reliable operation of the air conditioning system can be solved.

[0066] The air conditioning system of the embodiment improves the utilization rate of solar energy by simultaneously arranging the solar power generation module 13 and the solar heat storage module 14, and greatly prolongs the preheating time. Compared with the conventional heating belt preheating mode, the preheating mode of the present scheme has low energy consumption and is green and environmentally friendly. According to the temperature of the oil pool of the compressor, the solar power generation module or the solar heat storage module is selected for preheating, which fully utilizes the advantages of the solar power generation module 13, i.e., high heat conversion rate and fast heating speed, and the advantages of the solar heat storage module 14, i.e., large energy storage capacity and long heating duration, and the solar power generation module or the solar heat storage module is reasonably selected for preheating according to the temperature of the oil pool before the compressor starts.

[0067] In some embodiments, an intermediate limit value of the temperature, i.e., an intermediate limit value of the preset temperature, is pre-stored in the system. When the temperature of the oil pool does not reach the intermediate limit value of the preset temperature, it indicates that the temperature of the oil pool is too low, and the control module 15 is controlled to start preheating the oil pool by the solar power generation module 14. The solar power generation module 13 is used to take advantage of its high energy conversion rate and fast heating speed to quickly raise the temperature of the oil pool, shorten the preheating time, and improve the user experience.

[0068] When the temperature of the oil pool reaches the intermediate limit value of the preset temperature, it indicates that the temperature of the oil pool is low but not too low, and the solar heat storage module 14 is controlled to start preheating the oil pool at this time. The consumption of the electrical energy generated by the solar power generation module 13 can be reduced, and the preheating time will not be prolonged.

[0069] When the oil pool temperature reaches the upper limit of the preset temperature, the existing problems caused by the low oil pool temperature have been overcome, so the solar power generation module 13 and the solar heat storage module 14 can be controlled to be turned off, and the oil pool is no longer preheated, so as to reduce the consumption of the electricity generated by the solar power generation module 13 or the consumption of the heat generated by the solar heat storage module 14, and thus enough energy can be stored for preheating the oil pool for the next start-up.

[0070] In some embodiments, the air conditioning system further comprises a heating belt 16, and a power input end of the heating belt 16 is connected to a power output end of the solar power generation module 13. The control module 15 controls the preheating of the oil pool by the solar power generation module 13 by controlling the power supply of the heating belt 16. Specifically, when the solar power generation module 13 supplies power to the heating belt 16, the electric energy of the solar power generation module 13 can be converted into heat energy by the heating belt 16 to preheat the oil pool, otherwise, the solar power generation module 13 does not preheat the heating belt 16.

[0071] In addition to using the heating belt 16, other conversion devices for converting electric energy into heat energy can also be used, such as medium heating, electric arc heating, induction heating, etc. The present scheme uses the heating belt 16 but is not limited to the heating belt 16.

[0072] In some embodiments, the heating belt 16 has a plurality of heating belts, and the control module 15 further comprises a function of controlling the number of the heating belts 16 to be powered according to the oil pool temperature. It can be understood that the lower the oil pool temperature, the more the number of the heating belts 16 to be powered, so that heat can be generated quickly to reduce the waiting time of the user.

[0073] In order to further increase the stability of the present scheme, in some embodiments, the control module further comprises a function of:

[0074] The habitual start-up time of the user is obtained, and if the oil pool temperature does not reach the upper limit of the preset temperature within a preset time range before the habitual start-up time of the user, the solar power generation module is controlled to supply power to all the heating belts to preheat the oil pool.

[0075] By controlling the preheating mode according to the user's usage habit, when the oil pool temperature does not reach the upper limit of the preset temperature, the solar power generation module is controlled to supply power to all the heating belts to achieve short-time high-power preheating, reduce the waiting time of the user during start-up, improve the reliability of the start-up of the air conditioner, and improve the user experience.

[0076] In order to prevent the battery from being discharged within a certain time before the user starts, in some embodiments, the control module further comprises a function of:

[0077] The use power lower limit value of the solar power generation module is set, and when the solar power generation module is used to preheat the oil pool before the preset time range, if the power stored in the solar power generation module reaches the use power lower limit value, the solar power generation module is no longer used to preheat the oil pool. The use power lower limit value meets the power supply for all heating bands, and the time length corresponding to the preset time range is continuously supplied.

[0078] The scheme of the embodiment sets the power required for the high-power operation of the heating band for a set time as the use power lower limit value of the battery. When the battery power decreases to the use power lower limit value, it is considered that the battery power is insufficient, and the battery stops working, and the remaining power is saved to provide power for the short-time high-power preheating before the user starts. It should be noted that the use power lower limit value is different for different capacities and models of batteries, and needs to be set according to the actual use.

[0079] In some embodiments, the high-power operation of the heating band refers to turning on all heating bands or most heating bands for heating. The low-power operation of the heating band refers to turning on one heating band or a small number of heating bands for heating.

[0080] In some embodiments, the time period when the user often starts the air conditioner is obtained, and when the oil pool temperature does not reach the first preset temperature Tc1 in the first 20 minutes before the user starts the air conditioner, the preheating mode of the battery and two heating bands is used to realize short-time high-power preheating, reduce the waiting time of the user starting the air conditioner, improve the reliability of the air conditioner starting and stopping, improve the user experience, and the control flow is as shown in Figure 4 .

[0081] In some embodiments, as shown in Figure 5 , Figure 6 , Figure 8 To prevent the battery power from being depleted 20 minutes before the user starts, the power required for the high-power operation of the heating band 16 for 20 minutes is set as the minimum threshold value of the battery. When the battery power decreases to the minimum threshold value, it is considered that the battery power is insufficient, and the battery stops working, and the remaining power is saved to provide power for the short-time high-power preheating before the user starts. It should be noted that the minimum threshold value is different for different capacities and models of batteries, and needs to be set according to the actual use.

[0082] As shown in Figure 7 When the heat of the heat accumulator is depleted, the heating band can continue to be powered by the battery for preheating. In order to reduce the consumption of electric energy at the same time, the low-power operation of the heating band can be used.

[0083] In some embodiments, the detection frequency of the first temperature detection element 12 is adjusted in time according to the environmental temperature. In this way, the detection efficiency of the first temperature detection element 12 can be improved, and the energy consumption can be reduced.

[0084] In some embodiments, the air conditioning system further comprises a second temperature detecting element 17 for detecting the outdoor ambient temperature.

[0085] The control module further comprises a configuration for controlling the signal acquisition frequency of the first temperature detecting element according to the outdoor ambient temperature.

[0086] In some embodiments, when the air conditioner is in a shutdown state, the outdoor ambient temperature Ta is detected in real time, and the signal acquisition frequency of the first temperature detecting element is controlled according to the outdoor ambient temperature Ta.

[0087] In some embodiments, as shown in Figure 2 , Figure 3 When the compressor is in a shutdown state, and the outdoor ambient temperature Ta≤Ta1 (first preset ambient temperature), the first temperature detecting element 12 feeds back the detected oil pool temperature Tc to the control module 15 every t1 seconds; when Ta1

[0088] The control module 15 adopts different preheating methods to preheat the oil pool according to the compressor oil pool temperature value Tc fed back by the first temperature detecting element 12.

[0089] In some embodiments, as shown in Figure 9 The solar power generation module 13 comprises a solar panel and a storage battery, wherein the solar panel is used to convert solar energy into electric energy; and the storage battery is used to store the electric energy converted by the solar panel.

[0090] In some embodiments, as shown in Figure 10 The solar heat storage module 14 comprises a solar heat collector and a heat accumulator (not shown in the figure), the solar heat collector is used to convert solar energy into heat energy; and the heat accumulator is used to store the heat energy converted by the solar heat collector.

[0091] In some embodiments, the heat accumulator is located at the bottom of the compressor, which stores the heat energy converted by the solar heat collector. The heat accumulator contains phase change material. By controlling the switch of the heat accumulator, the phase change material can store or release heat energy through phase change. When the temperature is high, the heat energy is stored; when the temperature is low, the heat is released. Different heat accumulator capacities can be selected according to the demand.

[0092] In some embodiments, the air conditioning system further comprises a third temperature detection unit configured to detect the temperature of the solar heat storage module.

[0093] The control module further comprises a configuration for controlling the opening of the solar heat storage module to preheat the oil pool before preheating the oil pool. When the temperature of the solar heat storage module reaches the preset temperature value, the control module controls the opening of the solar heat storage module to preheat the oil pool. Otherwise, the control module controls the opening of the solar power generation module to preheat the oil pool.

[0094] In some embodiments, as shown in Figure 4 When the temperature detection element 12 detects that the oil pool temperature Tc≥Tc1 (the first preset oil pool temperature), the heat accumulator and the battery stop working and do not preheat the compressor. When the second preset oil pool temperature Tc2≤Tc<Tc1, the control module 15 controls the heat accumulator to work, and the phase change material in the heat accumulator releases heat through phase change to preheat the oil pool. When the third preset oil pool temperature Tc3≤Tc<Tc2, the control module 15 controls the battery to work, and the battery transmits electricity to one of the heating bands 16, and the heating band 16 works at power P1. When the temperature detection element 12 detects that the oil pool temperature Tc<Tc3, the control module 15 controls the battery to work, and the battery transmits electricity to all the heating bands 16, and the heating band 16 works at power P2. Wherein, Tc3<Tc2<Tc1, Tc1=20℃, Tc2=5℃, Tc3=-10℃, P1<P2. This control scheme adjusts the preheating mode in real time according to the compressor oil pool temperature, flexibly configures the preheating power, and is beneficial to improve the preheating efficiency.

[0095] The scheme of the embodiment accurately adjusts the preheating mode and the preheating power according to the compressor oil pool temperature.

[0096] When the compressor oil pool temperature is higher than the set oil pool temperature limit value, no preheating treatment is performed; when the compressor oil pool temperature is lower than the set limit value, the heat accumulator preheating, the battery+heating band low-power preheating, and the battery+heating band high-power preheating are adopted according to the corresponding preset oil pool temperature interval.

[0097] The combination of the heat accumulator and the battery dual-energy storage mode can improve the utilization rate of solar energy.

[0098] Compared with a single energy storage mode, the dual energy storage mode using the heat accumulator and the battery improves the utilization rate of solar energy and greatly prolongs the preheating time. Compared with the traditional heating belt preheating mode, the preheating mode has low energy consumption and is green and environmentally friendly. When the heat of the heat accumulator is exhausted, the battery can continue to supply power to the heating belt for heating. When the battery power is exhausted, the heat accumulator can continue to preheat the compressor.

[0099] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing examples, the ordinary skilled in the art can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements to some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

[0100] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing examples, the ordinary skilled in the art can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements to some or all of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0101] The above description has been made in conjunction with specific embodiments for the convenience of explanation. However, the above exemplary discussion is not intended to exhaust or limit the embodiments to the specific forms disclosed above. Various modifications and variations can be derived according to the above teachings. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different modified embodiments suitable for specific use considerations.

Claims

1. An air conditioning system, characterized in that, include: compressor; A first temperature sensing element is used to detect the oil sump temperature of the compressor; Solar power generation modules are used to convert solar energy into electrical energy and store it. Solar thermal storage modules are used to convert solar energy into thermal energy and store it. The control module is configured to control the preheating state of the oil tank by the solar power generation module and the solar thermal storage module respectively, based on the oil tank temperature, before the compressor is started. When the temperature of the oil tank does not reach the preset intermediate limit, the solar power generation module is activated to preheat the oil tank. When the temperature of the oil tank reaches the intermediate limit of the preset temperature, the solar thermal storage module is activated to preheat the oil tank. The control module also includes a configuration as follows: If the oil tank temperature does not reach the upper limit of the preset temperature within a preset time range before the user's preferred power-on time, the solar power generation module is turned on to supply power to all heating zones and preheat the oil tank. The control module also includes a configuration as follows: A minimum power consumption limit is set for the amount of electricity stored in the solar power generation module. When the solar power generation module is used to preheat the oil tank before the preset time range, if the amount of electricity stored in the solar power generation module reaches the minimum power consumption limit, the solar power generation module will no longer be used to preheat the oil tank. The minimum power consumption limit is sufficient to supply power to all heating zones for a duration corresponding to the preset time range.

2. The air conditioning system according to claim 1, characterized in that, When the temperature of the oil tank reaches the upper limit of the preset temperature, the solar power generation module and the solar thermal storage module are turned off, and the oil tank is not preheated.

3. The air conditioning system according to claim 2, characterized in that, The air conditioning system also includes: The control module controls the solar power generation module to preheat the oil tank by controlling the power supply of the solar power generation module to the heating belt.

4. The air conditioning system according to claim 3, characterized in that, The heating bands are multiple, and the control module further includes controlling the number of heating bands powered according to the oil tank temperature.

5. The air conditioning system according to any one of claims 1-4, characterized in that, The air conditioning system also includes: The second temperature sensing element is used to detect the outdoor ambient temperature; The control module also includes a configuration for controlling the signal acquisition frequency of the first temperature detection element based on the outdoor ambient temperature.

6. The air conditioning system according to any one of claims 1-4, characterized in that, The solar power generation module includes: Solar panels, which are used to convert solar energy into electrical energy; A storage battery for storing the electrical energy converted from the solar panels.

7. The air conditioning system according to any one of claims 1-4, characterized in that, The solar thermal storage module includes: Solar collectors are used to convert solar energy into thermal energy; A thermal accumulator is used to store the thermal energy converted from solar collectors.

8. The air conditioning system according to any one of claims 1-4, characterized in that, The air conditioning system also includes: The third temperature detection unit is used to detect the temperature of the solar thermal storage module; The control module further includes a configuration to: before controlling the solar thermal storage module to preheat the oil tank, determine the temperature of the solar thermal storage module; when the temperature of the solar thermal storage module reaches a preset temperature value, control the solar thermal storage module to preheat the oil tank; otherwise, control the solar power generation module to preheat the oil tank.

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