Air conditioner and control method thereof

Abstract

The invention provides an air conditioner and a control method thereof.The air conditioner comprises a compressor and a water pipe assembly, the compressor comprises a shell, a cold water cavity is formed between the shell and the inner wall of the compressor in a sealed mode, and the water pipe assembly comprises a water inlet pipe and a first water outlet pipe; one end of the first water outlet pipe is fixedly connected with the top of the shell, and the water inlet pipe and the first water outlet pipe communicate with the cold water cavity; when the cooling function is started, cold water enters the cold water cavity through the water inlet pipe and flows out along the first water outlet pipe. The cold water cavity is formed between the inner wall of the compressor and the shell, the water inlet pipe and the first water outlet pipe are further arranged, when the exhaust temperature of the compressor is too high, the cooling function is started, cold water enters the cold water cavity through the water inlet pipe, flows to the top from the bottom and flows out of the first water outlet pipe, and therefore the compressor is cooled; the high-temperature refrigerating capacity and the rapid refrigerating capacity of the compressor are improved, the user experience is improved, and meanwhile the service life of the compressor is prolonged.

Description

Technical Field

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

[0002] In addition to energy saving, the factors that measure the quality of ordinary household air conditioners include rapid cooling capacity, high-temperature cooling capacity, and low-temperature heating capacity. Among them, energy saving is reflected in electricity saving, while rapid cooling capacity, high-temperature cooling capacity, and low-temperature heating capacity are reflected in user comfort and can be intuitively felt by consumers.

[0003] For ordinary household heat pump air conditioners, both the cold source and the heat source are air, and the air conditioning cooling and heating cycles are reverse Carnot cycles. The essence is to transfer heat from low-temperature air to high-temperature air through the compressor. When cooling in summer, the high-temperature gaseous refrigerant discharged by the compressor needs to exchange heat with the outdoor air through the condenser of the air conditioner outdoor unit to discharge the heat into the outdoor air. When the temperature is higher, the heat transfer temperature difference of the condenser is smaller and the heat transfer effect is worse, resulting in a worse high-temperature cooling effect of the air conditioner; at the same time, the higher the temperature, the higher the exhaust temperature of the compressor, and the higher the internal temperature of the compressor. In order to protect the life of the compressor, the frequency of the compressor will be limited at this time, that is, the compressor frequency will be reduced, but this operation will sacrifice the cooling capacity of the air conditioner. Summary of the invention

[0004] Embodiments of the present invention provide an air conditioner and a control method thereof, so as to enhance the high-temperature cooling capability and rapid cooling capability of the air conditioner, improve the user experience, and protect the life of the compressor.

[0005] The present invention provides an air conditioner, comprising:

[0006] The compressor comprises a shell, wherein the shell and the inner wall of the compressor are sealed to form a cold water cavity;

[0007] A water pipe assembly, comprising a water inlet pipe and a first water outlet pipe, one end of the water inlet pipe is fixedly connected to the bottom of the shell, one end of the first water outlet pipe is fixedly connected to the top of the shell, and the water inlet pipe and the first water outlet pipe are both connected to the cold water chamber;

[0008] When the cooling function is turned on, cold water enters the cold water chamber through the water inlet pipe and flows out along the first water outlet pipe.

[0009] In the air conditioner provided by the present invention, the cold water chamber is a spiral structure and surrounds from the bottom of the compressor to the top of the compressor.

[0010] In the air conditioner provided by the present invention, the air conditioner further comprises an injection assembly, the injection assembly is fixedly arranged on one side of the top of the condenser, the water pipe assembly further comprises a water guide pipe, one end of the water guide pipe is connected to the water inlet pipe, and the other end is connected to the injection assembly;

[0011] The water flows through the water inlet pipe into the water guide pipe and is guided to the spray assembly, and then sprayed out through the spray assembly.

[0012] In the air conditioner provided by the present invention, the injection assembly includes a nozzle connected to the water pipe, the nozzle is extended along the circumference of the condenser, and the nozzle is provided with a plurality of overflow ports at intervals along its length direction, and the overflow ports are used to spray water.

[0013] In the air conditioner provided by the present invention, the injection assembly further comprises an outer tube sleeved outside the nozzle, a flow channel is formed between the outer tube and the nozzle, and the outer tube is further provided with an opening along its length direction;

[0014] Wherein, the water flow in the nozzle is sprayed out from the overflow port and flows along the flow channel to the opening to the outside.

[0015] In the air conditioner provided by the present invention, the water pipe assembly further includes a second water outlet pipe, one end of the second water outlet pipe is fixedly connected to the top of the housing and communicates with the cold water chamber, and the other end of the second water outlet pipe is connected to the water guide pipe;

[0016] The water in the cold water chamber flows through the second water outlet pipe to the water guide pipe and is guided to the injection assembly.

[0017] In the air conditioner provided by the present invention, the water pipe assembly also includes a first valve, a second valve, a third valve and a fourth valve, the first valve is fixedly arranged at one end of the water inlet pipe close to the outer shell, the second valve is fixedly arranged at one end of the first water outlet pipe, the third valve is fixedly arranged at one end of the second water outlet pipe close to the outer shell, and the fourth valve is fixedly arranged at one end of the water conduit close to the water inlet pipe.

[0018] The present invention further provides a control method for an air conditioner, which is applied to any of the air conditioners described above, and comprises:

[0019] receiving a power-on instruction and determining an operation mode, wherein the operation mode includes a cooling mode;

[0020] If the operating mode is a cooling mode, obtaining corresponding temperature data;

[0021] The temperature data is determined to be greater than the preset temperature, and if the temperature data is greater than the preset temperature, the cooling function is activated.

[0022] The step of judging the difference between the temperature data and the preset temperature and activating the cooling function if the temperature data is greater than the preset temperature of the present invention comprises:

[0023] Determine whether the exhaust temperature is greater than a first preset exhaust temperature, and if the exhaust temperature is greater than the first preset exhaust temperature, open the first valve and the second valve, and close the third valve and the fourth valve; and / or,

[0024] Determine whether the outdoor ambient temperature is greater than a first preset ambient temperature, if the outdoor ambient temperature is greater than the first preset ambient temperature, open the first valve, the second valve and the fourth valve, and close the third valve; and / or,

[0025] It is determined whether the coil temperature is greater than a first preset coil temperature. If the coil temperature is greater than the first preset coil temperature, the fourth valve is opened, and the first valve, the second valve and the third valve are closed.

[0026] After the steps of receiving a power-on instruction and determining an operating mode, wherein the operating mode includes a cooling mode, the present invention further includes:

[0027] If the operation mode is a heating mode, obtaining the current temperature of the condenser coil after a preset time period, wherein the operation mode includes a cooling mode;

[0028] It is determined whether the current temperature is lower than the preset frosting temperature. If the current temperature is lower than the preset frosting temperature, the defrosting function is started.

[0029] The present application sets a cold water chamber between the inner wall of the compressor and the compressor casing, and the water inlet pipe and the first water outlet pipe connected to the cold water chamber are respectively fixed at the bottom and the top of the casing. When the exhaust temperature of the compressor is too high, the cooling function of the compressor is started, and cold water enters the cold water chamber through the water inlet pipe, flows from the bottom of the compressor to the top of the compressor, and flows out from the first water outlet pipe, so as to cool the compressor. At this time, there is no need to limit the operating frequency of the compressor, which ensures the high-temperature refrigeration capacity and rapid refrigeration capacity of the compressor, improves user experience, and at the same time increases the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0031] Figure 1a-1dThe structure diagram of the air conditioner at various angles in the embodiment of the present invention;

[0032] Figure 2 for Figure 1b The enlarged view of point A in the middle;

[0033] Figure 3 for Figure 1b The enlarged view of point B in the middle;

[0034] Figure 4 is a cross-sectional view of an air conditioner in an embodiment of the present invention;

[0035] Figure 5 A side view of an air conditioner without an assembled outer tube in an embodiment of the present invention;

[0036] Figure 6 This is a structural diagram of an air conditioner assembled with an outer tube in an embodiment of the present invention;

[0037] Figure 7 is a cross-sectional view of an air conditioner in an embodiment of the present invention;

[0038] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0039] Fig. 9 It is a structural diagram of the outer tube in an embodiment of the present invention;

[0040] Fig.10 is a flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0041] Fig.11 is a sub-flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0042] Fig.12 is a sub-flow chart of a method for controlling an air conditioner in an embodiment of the present invention;

[0043] Fig.13 A control system diagram of an air conditioner in an embodiment of the present invention;

[0044] Fig.14 A schematic diagram of a step flow of a method for controlling an air conditioner according to an embodiment of the present invention;

[0045] The reference numerals in the figures are:

[0046] 10. Compressor; 11. Shell; 12. Cold water chamber; 20. Water pipe assembly; 21. Water inlet pipe; 22. First water outlet pipe; 23. Water guide pipe; 24. Second water outlet pipe; 25. First valve; 26. Second valve; 27. Third valve; 28. Fourth valve; 30. Injection assembly; 31. Spray pipe; 311. Overflow port; 32. Outer pipe; 321. Opening; 33. Flow channel; 40. Condenser. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are described in detail.

[0048] Reference Figures 1a to 9 As shown, it shows an embodiment of the air conditioner of the present invention. The air conditioner includes a compressor 10 and a water pipe assembly 20, the compressor 10 includes a shell 11, the shell 11 and the inner wall of the compressor 10 are sealed to form a cold water chamber 12, the water pipe assembly 20 includes a water inlet pipe 21 and a first water outlet pipe 22, one end of the water inlet pipe 21 is fixedly connected to the bottom of the shell 11, one end of the first water outlet pipe 22 is fixedly connected to the top of the shell 11, and the water inlet pipe 21 and the first water outlet pipe 22 are both connected to the cold water chamber 12; wherein, when the cooling function is turned on, cold water enters the cold water chamber 12 through the water inlet pipe 21 and flows out along the first water outlet pipe 22.

[0049] Specifically, the compressor 10 generates a large amount of heat when it is running, especially when it is running at a high frequency. The higher the air temperature, the higher the exhaust temperature of the compressor 10. Excessive temperature can easily damage the compressor 10. If the operating frequency of the compressor 10 is limited, the cooling capacity of the compressor 10 will be weakened, affecting the user experience. Therefore, the air conditioner of the present application includes a compressor 10 and a water pipe assembly 20. A component with a cooling function is added to the compressor 10 to cool down the compressor 10, so as to increase the service life and cooling capacity of the compressor 10.

[0050] The compressor 10 includes a shell 11, which tightly wraps the various components inside the compressor 10 to prevent gas leakage and dust from entering. The shell 11 and the inner wall of the compressor 10 are sealed to form a cold water chamber 12, and the cold water chamber 12 is used to pass cold water to cool the internal components of the compressor 10; the water pipe assembly 20 includes a water inlet pipe 21 and a first water outlet pipe 22, the water inlet pipe 21 is used to inlet cold water, and the first water outlet pipe 22 is used to outlet water, one end of the water inlet pipe 21 is fixedly connected to the bottom of the shell 11, and the water inlet pipe 21 is communicated with the cold water chamber 12, one end of the first water outlet pipe 22 is fixedly connected to the top of the shell 11, and the water outlet pipe is communicated with the cold water chamber 12, so the water inlet pipe 21, the cold water chamber 12 and the first water outlet pipe 22 form a flow path for cold water.

[0051] When the cooling function of the air conditioner is turned on, cold water is guided into the cold water chamber 12 along the water inlet pipe 21, and the cold water cools the inside of the compressor 10 in the cold water chamber 12, and finally flows out to the outside from the first water outlet pipe 22. The cold water flows gradually from the bottom of the compressor 10 to the top of the compressor 10 in the cold water chamber 12, so the cold water cools the inside of the entire compressor 10, thereby preventing the temperature of the compressor 10 from being too high, which affects the service life of the compressor 10.

[0052] The present application sets a cold water chamber 12 between the inner wall of the compressor 10 and the outer shell 11 of the compressor 10, and the water inlet pipe 21 and the first water outlet pipe 22 connected to the cold water chamber 12 are respectively fixed at the bottom and the top of the outer shell 11. When the exhaust temperature of the compressor 10 is too high, the cooling function of the compressor 10 is started, and cold water enters the cold water chamber 12 through the water inlet pipe 21, flows from the bottom of the compressor 10 to the top of the compressor 10, and flows out from the first water outlet pipe 22, so as to cool the compressor 10. At this time, there is no need to limit the operating frequency of the compressor 10, which ensures the high-temperature refrigeration capacity and rapid refrigeration capacity of the compressor 10, improves user experience, and at the same time increases the service life of the compressor 10.

[0053] In one embodiment, referring to Figure 4 As shown, the cold water chamber 12 is a spiral structure, and surrounds from the bottom of the compressor 10 to the top of the compressor 10. Specifically, the cold water chamber 12 exists between the outer shell 11 of the compressor 10 and the inner wall of the compressor 10. The cold water chamber 12 is a cavity for the flow of cold water. The cold water chamber 12 is a spiral structure, that is, the cold water chamber 12 spirally surrounds between the outer shell 11 of the compressor 10 and the inner wall of the compressor 10, so that the cold water gradually flows from the bottom of the cold water chamber 12 to the top of the cold water chamber 12 in a spiral manner around the inner wall of the compressor 10, and finally flows out from the first water outlet pipe 22, thereby improving the cooling quality of the cold water cooling the compressor 10, the cooling effect is better, and the structural stability of the compressor 10 is improved, so that the flow of cold water is more stable and the flow direction is orderly.

[0054] More specifically, the cooling function of the compressor 10 can also be achieved by routing a water pipe around the outside of the compressor 10, but this method has a poor heat exchange effect, and the water pipe is not easy to fix on the outer surface of the compressor 10, and the operation during production is relatively complicated.

[0055] In a specific embodiment, refer to Figures 1a to 9As shown, the air conditioner also includes an injection assembly 30, which is fixed on one side of the top of the condenser 40. The water pipe assembly 20 also includes a water pipe 23, one end of the water pipe 23 is connected to the water inlet pipe 21, and the other end is connected to the injection assembly 30; wherein water flows through the water inlet pipe 21 into the water pipe 23 and is guided to the injection assembly 30, and is sprayed out through the injection assembly 30. Specifically, when the air conditioner is in operation, the high-temperature gaseous refrigerant discharged by the compressor 10 needs to exchange heat with the outdoor air through the condenser 40 of the air conditioner outdoor unit, thereby discharging heat to the outdoor air. During cooling in summer, when the outdoor temperature or the temperature inside the air conditioner is higher, the heat transfer temperature difference of the condenser 40 is smaller and the heat transfer effect is worse, resulting in poor high-temperature cooling effect of the air conditioner; at the same time, during heating in winter, when the outdoor ambient temperature is below 5°C, the condenser 40 of the air conditioner outdoor unit is very easy to frost, and the heating effect is greatly attenuated when the frost becomes thicker and thicker, resulting in poor heating experience. The condenser 40 basically needs to be defrosted once an hour or so, and the defrosting adopts the traditional reverse cycle defrosting mode, that is, the refrigerant of the air conditioner outdoor unit is reversed by a four-way valve, and the high-temperature refrigerant originally entering the inner side for heating enters the outdoor unit for defrosting. The defrosting time can reach about 10 minutes. During the reverse cycle defrosting period, the air conditioner has no heating effect and the room temperature fluctuates greatly. If the air conditioner outdoor unit frequently enters the defrosting action, it will seriously affect the heating effect.

[0056] Therefore, in this embodiment, a spray assembly 30 is fixedly provided on one side of the top of the condenser 40, and the spray assembly 30 is used to spray cold water or hot water onto the surface of the condenser 40 or around the condenser 40, so as to cool down or defrost the condenser 40; the water pipe assembly 20 also includes a water guide pipe 23, and the water guide pipe 23 is used to guide cold water or hot water into the spray assembly 30. One end of the water guide pipe 23 is connected to the water inlet pipe 21, and the other end of the water guide pipe 23 is connected to the spray assembly 30, so as to guide the cold water in the water inlet pipe 21 into the spray assembly 30.

[0057] When the cooling function is turned on, the cold water flowing into the water inlet pipe 21 flows to the injection assembly 30 through the water conduit 23, and is sprayed by the injection assembly 30 onto the surface of the condenser 40 or around the condenser 40, thereby cooling the surface of the condenser 40, thereby improving the heat transfer effect of the condenser 40, ensuring that the air conditioner has a good cooling effect under high temperature conditions, and improving the user experience.

[0058] When the defrost function is turned on, the hot water flowing into the water inlet pipe 21 flows to the injection assembly 30 through the water conduit 23, and is sprayed by the injection assembly 30 onto the surface of the condenser 40 or around the condenser 40, thereby defrosting the surface of the condenser 40, so that the air conditioner outdoor unit can operate for a long time without frequently entering the reverse cycle defrost, thereby improving the heating effect of the air conditioner and improving the comfort of the room.

[0059] More specifically, the injection assembly 30 is fixed on one side of the top of the condenser 40 to facilitate the direction of water injection, so that the water injected by the injection assembly 30 is not limited to one side of the condenser 40, that is, the injection assembly 30 can inject cold water or hot water toward one side of the condenser 40, and can also inject in a direction away from the external air of the condenser 40. In some coastal corrosion areas, water should not be directly injected toward the condenser 40, which may easily aggravate the corrosion. Therefore, the setting of the injection assembly 30 needs to be reasonably adjusted according to actual usage.

[0060] In one embodiment, referring to Figure 5 As shown, the spray assembly 30 includes a nozzle 31 connected to the water pipe 23, the nozzle 31 is extended along the circumference of the condenser 40, and the nozzle 31 is provided with a plurality of overflow ports 311 spaced apart along its length direction, and the overflow ports 311 are used to spray water. Specifically, the spray assembly 30 includes a nozzle 31, the nozzle 31 is connected to the water pipe 23, so that the water pipe 23 guides water into the nozzle 31, the nozzle 31 is extended along the circumference of the condenser 40, so as to ensure that the water in the nozzle 31 can flow evenly to the surface of the condenser 40 or around the condenser 40; the nozzle 31 is provided with a plurality of overflow ports 311, and the plurality of overflow ports 311 are spaced apart along the length direction of the nozzle 31, so that the water flow guided to the nozzle 31 by the water pipe 23 can overflow from the overflow ports 311 and flow to the surrounding or surface of the condenser 40.

[0061] More specifically, the overflow port 311 is disposed at the top of the nozzle 31, so that water can be sprayed out from the top of the nozzle 31 and flow from top to bottom to the surroundings of the condenser 40 or the surface of the condenser 40, thereby improving the cooling or defrosting effect and efficiency.

[0062] In a specific embodiment, refer to Figures 7 to 9As shown, the injection assembly 30 also includes an outer tube 32 sleeved on the outside of the nozzle 31, a flow channel 33 is formed between the outer tube 32 and the nozzle 31, and the outer tube 32 is also provided with an opening 321 along its length direction, wherein the water flow in the nozzle 31 is sprayed out from the overflow port 311 and flows along the flow channel 33 to the opening 321 to the outside. Specifically, the injection assembly 30 also includes an outer tube 32, which is sleeved on the outside of the nozzle 31, so as to limit the water flow sprayed from the nozzle 31, thereby preventing the nozzle 31 from spraying water to other areas to affect the use of other structural parts, and at the same time improving the safety of the air conditioner; a flow channel 33 is also formed between the outer tube 32 and the nozzle 31, so that the water flow sprayed from the nozzle 31 can flow in the flow channel 33 to avoid water splashing; and the outer tube 32 is also provided with an opening 321, which is extended along the length direction of the outer tube 32, and the opening 321 is used to divert water to the outside, that is, the water flowing in the flow channel 33 eventually flows to the periphery of the condenser 40 or the surface of the condenser 40 through the opening 321.

[0063] Therefore, when the cooling function or the defrosting function is started, the water in the spray pipe 31 is sprayed out from the overflow port 311, flows in the flow channel 33 to the opening 321, and flows from the opening 321 to the periphery of the condenser 40 or the surface of the condenser 40, thereby achieving cooling or defrosting of the condenser 40. The spray assembly 30 has a simple structure, and the spraying method of the water flow is gentle, which avoids water splashing and improves the safety of the air conditioner.

[0064] More specifically, in this embodiment, the opening 321 is arranged at the bottom end of the outer tube 32 to facilitate the water flow to converge at the bottom end of the outer tube 32 and flow to the outside through the opening 321, thereby increasing the flow speed of the water flow and ultimately improving the cooling efficiency or defrosting efficiency.

[0065] In one embodiment, referring to Figures 1a to 4As shown, the water pipe assembly 20 also includes a second water outlet pipe 24, one end of the second water outlet pipe 24 is fixedly connected to the top of the shell 11 and communicated with the cold water chamber 12, and the other end of the second water outlet pipe 24 is connected to the water guide pipe 23; wherein, the water in the cold water chamber 12 flows to the water guide pipe 23 through the second water outlet pipe 24 and is guided to the injection assembly 30. Specifically, the water pipe assembly 20 also includes a second water outlet pipe 24, one end of the second water outlet pipe 24 is fixedly connected to the top of the shell 11, and the other end is connected to the water guide pipe 23, and the second water outlet pipe 24 is also connected to the cold water chamber 12, and the second water outlet pipe 24 is used to guide the water in the cold water chamber 12 into the water guide pipe 23; when the defrost function is turned on, the cold water flows to the cold water chamber 12 through the water inlet pipe 21, and cools the compressor 10 from the bottom to the top. During the cooling process, the cold water in the cold water chamber 12 is heated into hot water, and the hot water flows to the water guide pipe 23 through the second water outlet pipe 24. The water guide pipe 23 guides the hot water to the injection assembly 30, and the injection assembly 30 sprays the hot water onto the surface of the condenser 40 or around the condenser 40, thereby defrosting the condenser 40.

[0066] When heating in winter, this embodiment uses the water pipe assembly 20 and the cold water chamber 12 to recover the waste heat of the compressor 10, so that the cold water is heated into hot water in the compressor 10, and the hot water is used to alleviate the frosting problem of the condenser 40, so that the air conditioner outdoor unit can operate for a long time without frequently entering the reverse cycle defrosting, thereby improving the heating effect of the air conditioner and improving the comfort of the room.

[0067] In a specific embodiment, refer to Figures 2 to 3As shown, the water pipe assembly 20 also includes a first valve 25, a second valve 26, a third valve 27 and a fourth valve 28, the first valve 25 is fixedly arranged at one end of the water inlet pipe 21 close to the outer shell 11, the second valve 26 is fixedly arranged at one end of the first water outlet pipe 22, the third valve 27 is fixedly arranged at one end of the second water outlet pipe 24 close to the outer shell 11, and the fourth valve 28 is fixedly arranged at one end of the water conduit 23 close to the water inlet pipe 21. Specifically, the water pipe assembly 20 also includes a first valve 25, a second valve 26, a third valve 27 and a fourth invention, wherein the first valve 25 is fixedly arranged at one end of the water inlet pipe 21 close to the outer shell 11, and the first valve 25 is used to control the water inlet of the water inlet pipe 21 to the cold water chamber 12; the second valve 26 is fixedly arranged at one end of the first water outlet pipe 22, and the second valve 26 is used to control the water in the cold water chamber 12 to be discharged to the outside; the third valve 27 is fixedly arranged at one end of the second water outlet pipe 24 close to the outer shell 11, and the third valve 27 is used to control the water in the cold water chamber 12 to flow to the water guide pipe 23, so as to flow to the injection assembly 30 to defrost the condenser 40; the fourth valve 28 is fixedly arranged at one end of the water guide pipe 23 close to the water inlet pipe 21, and the fourth valve 28 is used to control the water inlet pipe 21 to guide water into the water guide pipe 23.

[0068] When the cooling function of the compressor 10 is turned on, the first valve 25 and the second valve 26 are opened, and the third valve 27 and the fourth valve 28 are closed, so that cold water enters the cold water chamber 12 from the water inlet pipe 21, and flows along the cold water chamber 12 from the bottom of the compressor 10 to the top of the compressor 10 to cool the compressor 10, and finally flows out to the outside through the first water outlet pipe 22.

[0069] When the cooling function of the condenser 40 is turned on, the fourth valve 28 is opened, and the first valve 25, the second valve 26 and the third valve 27 are closed, so that cold water flows from the water inlet pipe 21 to the water pipe 23, and from the water pipe 23 to the injection assembly 30, and finally sprayed by the injection assembly 30 to the surroundings of the condenser 40 or the surface of the condenser 40 to cool the condenser 40.

[0070] When the cooling functions of the compressor 10 and the condenser 40 are turned on at the same time, the first valve 25, the second valve 26, and the fourth valve 28 are opened, and the third valve 27 is closed. At this time, the cold water flows in two ways. One way is that the cold water enters the cold water chamber 12 from the water inlet pipe 21, and flows from the bottom of the compressor 10 to the top of the compressor 10 along the cold water chamber 12 to cool the compressor 10, and finally flows out to the outside through the first water outlet pipe 22; the other way is that the cold water flows from the water inlet pipe 21 to the water guide pipe 23, and flows from the water guide pipe 23 to the injection assembly 30, and finally is sprayed by the injection assembly 30 to the surrounding of the condenser 40 or the surface of the condenser 40 to cool the condenser 40, thereby achieving simultaneous cooling of the compressor 10 and the condenser 40, so that the air conditioner outdoor unit can stably operate in a high-frequency state, improve the high-temperature refrigeration capacity and the rapid refrigeration capacity, and improve the user experience.

[0071] When the defrost function is turned on, the first valve 25 and the third valve 27 are opened, and the second valve 26 and the fourth valve 28 are closed. At this time, cold water enters the cold water chamber 12 through the water inlet pipe 21, and the cold water is heated into hot water in the cold water chamber 12. The hot water flows along the second water outlet pipe 24 to the water guide pipe 23, and the water guide pipe 23 guides the hot water to the injection assembly 30, which is sprayed onto the surface of the condenser 40 or around the condenser 40 by the injection assembly 30, thereby defrosting the condenser 40.

[0072] In this embodiment, the first valve 25, the second valve 26, the third valve 27 and the fourth valve 28 are controlled to control the flow direction of water, so that the air conditioner has multiple functions to adapt to different environments, so that the air conditioner can cool the compressor 10 and the condenser 40 of the air conditioner outdoor unit during summer cooling, thereby solving the problem of poor refrigeration effect caused by excessive exhaust temperature or excessive temperature of the condenser 40; when heating in winter, the water cooling system is used to recover the waste heat of the compressor 10, and hot water is used to alleviate the frosting problem of the condenser 40, so that the air conditioner outdoor unit can run for a long time without frequently entering the reverse cycle defrosting, thereby improving the heating effect of the air conditioner and improving the comfort of the room.

[0073] The embodiment of the present invention also provides a method for controlling an air conditioner. Fig.13 The control system diagram of the air conditioner is shown in Figure 2. Fig.14 is a schematic flow chart of the steps of the air conditioner control method, Fig.10 is a flow chart of the control method of the air conditioner, wherein the steps of the control method of the air conditioner include S110-S130:

[0074] S110, receiving a power-on instruction and determining an operation mode, wherein the operation mode includes a cooling mode;

[0075] Specifically, the power-on instruction refers to the instruction information sent by the user to the air conditioner at the terminal. The power-on instruction includes the operating mode, execution temperature, wind speed information, etc. The controller determines the operating mode that needs to be started through the power-on instruction, wherein the operating mode includes cooling mode and heating mode (including cooling or heating mode in automatic mode).

[0076] S120, if the operation mode is a cooling mode, obtaining temperature data of the air conditioner;

[0077] Specifically, since the operating frequency of the compressor 10 is relatively high when the air conditioner is cooling, and most of the time it is in summer when the outdoor environment is relatively high, that is, multiple components of the air conditioner will be at high temperatures. In order to ensure the normal operation of the air conditioner, it is necessary to perform temperature detection on multiple structural parts of the air conditioner and the external environment. The temperature data includes multiple temperature data, such as the exhaust temperature of the compressor 10, the coil temperature of the condenser 40, the outdoor ambient temperature, etc. The temperature data is detected by a temperature sensor and fed back to a controller.

[0078] S130, determining the difference between the temperature data and the preset temperature, and if the temperature data is greater than the preset temperature, turning on the cooling function;

[0079] Specifically, the preset temperature is a manually set parameter, which is empirical and pre-set on the controller. The number of the preset temperatures corresponds to the number of the temperature data, such as the temperature data of the compressor 10 corresponds to the preset temperature of the compressor 10, the temperature data of the condenser 40 corresponds to the preset temperature of the condenser 40, and so on; after the controller obtains the temperature data, it determines whether it is necessary to turn on the cooling function according to the size of the temperature data and the preset temperature, so as to cool down the various components of the air conditioner and ensure the high-frequency operation of the air conditioner; when the temperature data is greater than the preset temperature, it indicates that the temperature of the various components of the air conditioner is too high and there is a risk of damage. In order to enable the air conditioner to continue to operate at high frequency, the cooling function is turned on at this time, and cold water is used to cool the compressor 10 / condenser 40 to increase the service life of the compressor 10 and the condenser 40.

[0080] Exemplarily, in this embodiment, if it is detected that the temperature data of the compressor 10 and / or the temperature data of the condenser 40 is greater than the preset temperature, the cooling function is turned on, and cold water enters the cold water chamber 12 along the water inlet pipe 21, cools the compressor 10 from bottom to top, and flows out from the first water outlet pipe 22; and / or, cold water enters the water conduit 23 along the water inlet pipe 21 and flows to the injection assembly 30, and the injection assembly 30 sprays the cold water around or on the surface of the condenser 40 to cool the condenser 40.

[0081] In one embodiment, as Fig.11 shown, the temperature data includes the exhaust temperature of the compressor 10, the coil temperature of the condenser 40, and the outdoor ambient temperature, and step S130 includes S131 - S133.

[0082] S131. Determine whether the exhaust temperature is greater than a first preset exhaust temperature. If the exhaust temperature is greater than the first preset exhaust temperature, open the first valve 25 and the second valve 26, and close the third valve 27 and the fourth valve 28; and / or

[0083] S132. Determine whether the outdoor ambient temperature is greater than a first preset ambient temperature. If the outdoor ambient temperature is greater than the first preset ambient temperature, open the first valve 25, the second valve 26, and the fourth valve 28, and close the third valve 27; and / or,

[0084] S133. Determine whether the coil temperature is greater than a first preset coil temperature. If the coil temperature is greater than the first preset coil temperature, open the fourth valve 28, and close the first valve 25, the second valve 26, and the third valve 27.

[0085] Specifically, the temperature data includes the exhaust temperature (T_exhaust) of the compressor 10, the coil temperature (T_condenser) of the condenser 40, and the outdoor ambient temperature (T_environment). That is, in this embodiment, it is determined whether the air conditioner is under high temperature by judging the compressor 10, the condenser 40 of the air conditioner, and the external temperature. The exhaust temperature (T_exhaust) of the compressor 10, the coil temperature (T_condenser) of the condenser 40, and the outdoor ambient temperature (T_environment) are detected in real time, and the temperature data is compared with the preset temperature to determine whether to turn on the cooling function; the first preset exhaust temperature (T_exhaust1), the first preset ambient temperature (T_environment1), and the first preset coil temperature (T_condenser1) are all preset values, and the specific values are obtained through experimental verification. The first preset exhaust temperature (T_exhaust1), the first preset ambient temperature (T_environment1), and the first preset coil temperature (T_condenser1) are pre - set in the controller, so as to compare the first preset exhaust temperature (T_exhaust1), the first preset ambient temperature (T_environment1), and the first preset coil temperature (T_condenser1) with the exhaust temperature (T_exhaust) of the compressor 10, the outdoor ambient temperature (T_environment), and the coil temperature (T_condenser) of the condenser 40 respectively. In this embodiment, 3 determination conditions are set, and there is no priority among them.

[0086] Obtain the exhaust temperature (T_exhaust) of the compressor 10, and determine whether the exhaust temperature (T_exhaust) is greater than the first preset exhaust temperature (T_exhaust1) according to the exhaust temperature (T_exhaust). If the exhaust temperature (T_exhaust) is greater than or equal to the first preset exhaust temperature (T_exhaust1), it indicates that the temperature of the compressor 10 is too high at this time, and there is a risk of damage. To ensure the high-frequency operation of the compressor 10, the cooling function of the compressor 10 needs to be turned on at this time. At this time, open the first valve 25 and the second valve 26, and close the third valve 27 and the fourth valve 28, so that cold water enters the cold water chamber 12 from the water inlet pipe 21, and flows from the bottom of the compressor 10 to the top of the compressor 10 along the cold water chamber 12 to cool the compressor 10, and finally flows out to the outside through the first water outlet pipe 22, realizing the cooling of the compressor 10, so that the outdoor unit of the air conditioner can stably operate at a high frequency state, improving the high-temperature refrigeration capacity and the rapid refrigeration capacity, and improving the user experience.

[0087] At the same time, the controller continuously and real-time obtains the exhaust temperature (T_exhaust) of the compressor 10. When it is detected that the exhaust temperature (T_exhaust) is less than the second preset exhaust temperature (T_exhaust2), control is carried out to exit the cooling function of the compressor 10. At this time, close the first valve 25 and the second valve 26. Among them, the second preset exhaust temperature (T_exhaust2) is also data obtained according to tests and is pre-set data in the controller, and the second preset exhaust temperature (T_exhaust2) is less than the first preset exhaust temperature (T_exhaust1).

[0088] The outdoor ambient temperature (T ring) is obtained, and it is determined whether the outdoor ambient temperature (T ring) is greater than the first preset ambient temperature (T ring 1) according to the outdoor ambient temperature (T ring). If the outdoor ambient temperature (T ring) is greater than or equal to the first preset ambient temperature (T ring 1), it indicates that the outdoor ambient temperature is high at this time, and the compressor 10 and the condenser 40 are in a high temperature environment. At this time, high-frequency operation of the compressor 10 may cause damage, and the heat exchange effect of the condenser 40 is poor. In order to ensure the high-frequency operation of the compressor 10 and the refrigeration effect, the cooling function of the compressor 10 and the condenser 40 needs to be turned on at this time. At this time, the first valve 25, the second valve 26, and the fourth valve 28 are opened, and the third valve 27 is closed. At this time, cold water flows There are two paths, one is that cold water enters the cold water chamber 12 from the water inlet pipe 21, and flows along the cold water chamber 12 from the bottom of the compressor 10 to the top of the compressor 10 to cool the compressor 10, and finally flows out to the outside through the first water outlet pipe 22; the other path is that cold water flows from the water inlet pipe 21 to the water pipe 23, and flows from the water pipe 23 to the injection assembly 30, and finally sprayed by the injection assembly 30 to the surrounding of the condenser 40 or the surface of the condenser 40 to cool the condenser 40, thereby achieving simultaneous cooling of the compressor 10 and the condenser 40, so that the air conditioner outdoor unit can stably operate in a high-frequency state, improve high-temperature cooling capacity and rapid cooling capacity, and improve user experience.

[0089] At the same time, the controller has been acquiring the outdoor ambient temperature (T ring) in real time. When it is detected that the outdoor ambient temperature (T ring) is lower than the second preset ambient temperature (T ring 2), the controller controls to exit the cooling function of the compressor 10 and the condenser 40, and at this time closes the first valve 25, the second valve 26, and the fourth valve 28. Among them, the second preset ambient temperature (T ring 2) is also data obtained according to the test, which is data pre-set in the controller, and the second preset ambient temperature (T ring 2) is lower than the first preset ambient temperature (T ring 1).

[0090] The coil temperature (Tcold) of the condenser 40 is obtained, and it is determined whether the coil temperature (Tcold) is greater than a first preset coil temperature (Tcold1) based on the coil temperature (Tcold). If the coil temperature (Tcold) is greater than or equal to the first preset coil temperature (Tcold1), it indicates that the temperature of the condenser 40 is too high at this time, and there is a risk of damage and the heat exchange effect of the condenser 40 is poor. In order to ensure the heat exchange effect and efficiency of the condenser 40, it is necessary to turn on the cooling function of the condenser 40. At this time, the fourth valve 28 is opened, and the first valve 25, the second valve 26 and the third valve 27 are closed, so that cold water flows from the water inlet pipe 21 to the water conduit 23, and from the water conduit 23 to the injection assembly 30, and finally the injection assembly 30 sprays the surrounding area of ​​the condenser 40 or the surface of the condenser 40 to cool the condenser 40.

[0091] At the same time, the controller always obtains the coil temperature (T cold) of the condenser 40 in real time, and when it is detected that the coil temperature (T cold) is less than the second preset coil temperature (T cold 2), the controller exits the cooling function of the condenser 40, and at this time closes the fourth valve 28. Among them, the second preset coil temperature (T cold 2) is also data obtained according to the test, which is pre-set in the controller, and the second preset coil temperature (T cold 2) is less than the first preset coil temperature (T cold 1).

[0092] In one embodiment, if Fig.12 As shown, after step S110, steps S140-S150 are also included.

[0093] S140, if the operation mode is a heating mode, obtaining the current temperature of the coil of the condenser 40 after a preset time period, wherein the operation mode includes a heating mode;

[0094] S150, determining whether the current temperature is lower than a preset frosting temperature; if the current temperature is lower than the preset frosting temperature, starting a defrosting function.

[0095] Specifically, during heating in winter, when the outdoor ambient temperature is below 5°C, the condenser 40 of the air-conditioning outdoor unit is very easy to frost. When the frost becomes thicker and thicker, the heating effect is greatly attenuated, and the heating experience is not good. The condenser 40 basically needs to be defrosted once an hour, and the defrosting adopts the traditional reverse cycle defrosting mode, that is, the refrigerant of the air-conditioning outdoor unit is reversed by a four-way valve, and the high-temperature refrigerant that originally entered the inside for heating enters the outdoor unit for defrosting. The defrosting time can be up to about 10 minutes. During the reverse cycle defrosting period, the air conditioner has no heating effect and the room temperature fluctuates greatly. If the air-conditioning outdoor unit frequently enters the defrosting action, it will seriously affect the heating effect.

[0096] The preset time period (△T) and the preset frosting temperature (T_out1) are both preset values, which are pre-set in the controller and obtained based on experimental measurements; the current temperature (T_cold) of the condenser 40 coil refers to the real-time temperature of the coil of the condenser 40 obtained by the temperature sensor, and the temperature sensor feeds back the current temperature to the controller.

[0097] When it is determined that the operating mode of the air conditioner is the heating mode, after the air conditioner operates for the preset time, the current temperature of the coil of the condenser 40 is obtained, and it is determined whether the current temperature is less than the preset frosting temperature. If the current temperature is less than or equal to the preset frosting temperature, it indicates that the condenser 40 is frosted. At this time, the defrosting function needs to be turned on to relieve the frosting problem of the condenser 40, increase the stable heating operation time, improve the heating effect and enhance the user experience.

[0098] More specifically, when the defrosting function is turned on, the first valve 25 and the third valve 27 are controlled to open, and the second valve 26 and the fourth valve 28 are closed. At this time, cold water enters the cold water chamber 12 through the water inlet pipe 21, and the cold water is heated into hot water in the cold water chamber 12. The hot water flows along the second water outlet pipe 24 to the water guide pipe 23, and the water guide pipe 23 guides the hot water to the spraying assembly 30, and the spraying assembly 30 sprays the hot water onto the surface or around the condenser 40, thereby defrosting the condenser 40.

[0099] At the same time, the controller always obtains the current temperature (T_cold) of the condenser 40 coil in real time. When it is detected that the current temperature (T_cold) is greater than the preset cooling temperature (T_out2), the defrosting function of the air conditioner is controlled to exit, and at this time, the first valve 25 and the third valve 27 are closed. Among them, the preset cooling temperature (T_out2) is also data obtained according to tests, which is pre-set in the controller, and the preset cooling temperature (T_out2) is greater than the preset frosting temperature (T_out1).

[0100] More specifically, when heating or cooling, the coil temperature of the outdoor condenser 40 can accurately reflect the frosting condition of the heat exchanger of the outdoor condenser 40 in real time. The lower this temperature is, the thicker the frosting of the outdoor heat exchanger is.

[0101] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioner, characterized in that: include: The compressor comprises a shell, wherein the shell and the inner wall of the compressor are sealed to form a cold water cavity; A water pipe assembly, comprising a water inlet pipe and a first water outlet pipe, one end of the water inlet pipe is fixedly connected to the bottom of the shell, one end of the first water outlet pipe is fixedly connected to the top of the shell, and the water inlet pipe and the first water outlet pipe are both connected to the cold water chamber; When the cooling function is turned on, cold water enters the cold water chamber through the water inlet pipe and flows out along the first water outlet pipe.

2. The air conditioner according to claim 1, characterized in that: The cold water chamber is a spiral structure and surrounds the compressor from the bottom to the top.

3. The air conditioner according to claim 1, characterized in that: The air conditioner further comprises an injection assembly, which is fixedly mounted on one side of the top of the condenser. The water pipe assembly further comprises a water guide pipe, one end of which is connected to the water inlet pipe, and the other end of which is connected to the injection assembly. The water flows through the water inlet pipe into the water guide pipe and is guided to the spray assembly, and then sprayed out through the spray assembly.

4. The air conditioner according to claim 3, characterized in that: The spray assembly includes a spray pipe connected to the water guide pipe, the spray pipe is extended along the circumference of the condenser, and the spray pipe is provided with a plurality of overflow ports at intervals along the length direction thereof, and the overflow ports are used for spraying water.

5. The air conditioner according to claim 4, characterized in that: The spray assembly further comprises an outer tube sleeved on the outside of the nozzle, a flow channel is formed between the outer tube and the nozzle, and the outer tube is also provided with an opening along its length direction; Wherein, the water flow in the nozzle is sprayed out from the overflow port and flows along the flow channel to the opening to the outside.

6. The air conditioner according to claim 3, characterized in that: The water pipe assembly further includes a second water outlet pipe, one end of which is fixedly connected to the top of the shell and communicates with the cold water chamber, and the other end of which is connected to the water guide pipe; The water in the cold water chamber flows through the second water outlet pipe to the water guide pipe and is guided to the injection assembly.

7. The air conditioner according to claim 6, characterized in that: The water pipe assembly also includes a first valve, a second valve, a third valve and a fourth valve. The first valve is fixedly arranged at one end of the water inlet pipe close to the outer shell, the second valve is fixedly arranged at one end of the first water outlet pipe, the third valve is fixedly arranged at one end of the second water outlet pipe close to the outer shell, and the fourth valve is fixedly arranged at one end of the water guide pipe close to the water inlet pipe.

8. A method for controlling an air conditioner, characterized in that: Applied to the air conditioner according to any one of claims 1 to 7, the method comprises: receiving a power-on instruction and determining an operation mode, wherein the operation mode includes a cooling mode; If the operating mode is a cooling mode, obtaining corresponding temperature data; The temperature data is determined to be greater than the preset temperature, and if the temperature data is greater than the preset temperature, the cooling function is activated.

9. The method according to claim 8, wherein the temperature data comprises the exhaust temperature of the compressor, the coil temperature of the condenser and the outdoor ambient temperature, wherein: The step of judging the difference between the temperature data and the preset temperature and activating the cooling function if the temperature data is greater than the preset temperature comprises: Determine whether the exhaust temperature is greater than a first preset exhaust temperature, and if the exhaust temperature is greater than the first preset exhaust temperature, open the first valve and the second valve, and close the third valve and the fourth valve; and / or, Determine whether the outdoor ambient temperature is greater than a first preset ambient temperature, if the outdoor ambient temperature is greater than the first preset ambient temperature, open the first valve, the second valve and the fourth valve, and close the third valve; and / or, It is determined whether the coil temperature is greater than a first preset coil temperature. If the coil temperature is greater than the first preset coil temperature, the fourth valve is opened, and the first valve, the second valve and the third valve are closed.

10. The method according to claim 8, characterized in that After the step of receiving the power-on instruction and determining the operation mode, wherein the operation mode includes a cooling mode, the method further includes: If the operation mode is a heating mode, obtaining the current temperature of the condenser coil after a preset time period, wherein the operation mode includes a heating mode; It is determined whether the current temperature is lower than the preset frosting temperature. If the current temperature is lower than the preset frosting temperature, the defrosting function is started.

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