Cooling control method and device for outdoor unit of air conditioner and air conditioner

Abstract

The invention provides a cooling control method and device of an air conditioner outdoor unit and an air conditioner. The method comprises the steps that a signal indicating that the air conditioner is in a refrigeration mode is received, and the condenser temperature in an outdoor unit of the air conditioner and the outdoor environment temperature of the outdoor environment where the outdoor unit is located are obtained; according to the condition that the condenser temperature and the outdoor environment temperature meet the first set condition, a spraying device is controlled to spray an outdoor unit, the spraying device comprises a spraying head arranged in the outdoor unit and a branch pipe communicated with a water drainage pipe of the indoor unit, and the branch pipe is used for conveying condensate water of the indoor unit to the spraying head. According to the cooling control method and device of the air conditioner outdoor unit and the air conditioner, the purposes of increasing heat dissipation of the outdoor unit and reducing the air outlet temperature of the indoor unit can be achieved only by changing the outdoor unit device and the air conditioner control logic without optimizing a grid, and therefore the refrigeration effect of the air conditioner is improved; therefore, normal operation of the air conditioner is ensured, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to a temperature reduction control method and a temperature reduction control device of an outdoor unit of an air conditioner, and an air conditioner. Background Art

[0002] In the related art, air conditioners have become an indispensable part of daily life during the high temperatures in summer. However, when using the air conditioner, the poor heat dissipation of the air conditioner outdoor unit will lead to poor heat exchange, which in turn affects the cooling effect of the air conditioner indoor unit and even causes the outdoor unit to malfunction. In order to achieve consistency and beauty in appearance, most office buildings or residences usually add grilles to the location where the air conditioner outdoor unit is placed to conceal the air conditioner outdoor unit, but the presence of the grille will affect the heat dissipation efficiency of the air conditioner outdoor unit. First, the grille will reduce the air flow channel, resulting in poor air flow. Secondly, the presence of the grille will increase the resistance of the air conditioner, making the air conditioner require more energy to operate, thereby increasing energy consumption.

[0003] The existing technologies mostly adopt the following methods to improve the heat dissipation effect: (1) optimize the design of the grille to improve the heat dissipation efficiency of the air conditioner, and (2) improve the material and cleanliness of the grille. However, since the grille design of each office building and residential building is different, most grille designs are mainly based on the coordination and aesthetics of the building, and do not consider the heat dissipation of the air conditioner outdoor unit. Therefore, when designing the air conditioner outdoor unit, it is necessary to consider the effect of the grille on its own heat dissipation. Summary of the invention

[0004] The present invention provides a cooling control method, a cooling control device and an air conditioner for an outdoor unit of an air conditioner, so as to solve the defects existing in the prior art and achieve the following effects: there is no need to optimize the grille, and the purpose of increasing the heat dissipation of the outdoor unit and reducing the air outlet temperature of the indoor unit can be achieved only by changing the outdoor unit device and the air conditioning control logic, thereby further improving the cooling effect of the air conditioner, avoiding malfunction of the air conditioner to ensure the normal operation of the air conditioner, and improving the user experience.

[0005] A method for controlling a temperature drop of an outdoor unit of an air conditioner according to a first embodiment of the present invention includes:

[0006] Receiving a signal that the air conditioner is in cooling mode, obtaining a condenser temperature in an outdoor unit of the air conditioner and an outdoor ambient temperature of an outdoor environment where the outdoor unit is located;

[0007] According to the condenser temperature and the outdoor environment temperature satisfying a first set condition, controlling a spray device to spray the outdoor unit;

[0008] Wherein, the spray device includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head, and the first setting condition is: the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than the first set temperature difference and lasts for at least the first set time.

[0009] According to an embodiment of the present invention, the step of controlling the spraying device to spray the outdoor unit specifically includes:

[0010] When it is determined that the water pump in the spray device is turned on, the rotation speed of the water pump is adjusted according to the temperature difference between the condenser temperature and the outdoor ambient temperature, wherein the water pump is arranged on the branch pipe.

[0011] According to an embodiment of the present invention, the step of adjusting the rotation speed of the water pump according to the temperature difference between the condenser temperature and the outdoor ambient temperature specifically includes:

[0012] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a first temperature difference range, adjusting the water pump speed to a first speed;

[0013] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a second temperature difference range, adjusting the water pump speed to a second speed;

[0014] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a third temperature difference range, adjusting the water pump speed to a maximum speed;

[0015] The first temperature difference interval is smaller than the second temperature difference interval, the second temperature difference interval is smaller than the third temperature difference interval, the first rotational speed is smaller than the second rotational speed, and the second rotational speed is smaller than the maximum rotational speed.

[0016] According to one embodiment of the present invention, after the step of controlling the spraying device to spray the outdoor unit, the temperature reduction control method of the air conditioner outdoor unit further includes:

[0017] Determine that the condenser temperature is less than or equal to the outdoor ambient temperature, control the water pump in the spray device to turn off, and close the drain valve on the branch pipe.

[0018] According to one embodiment of the present invention, an air outlet grille is provided at the air outlet of the outdoor unit, and the air outlet grille includes a plurality of air outlet grille pieces, and the air outlet grille pieces are rotatably arranged relative to the air outlet;

[0019] After the step of controlling the spraying device to spray the outdoor unit, the method further includes:

[0020] When the spray device is turned on and continuously operates for at least a second set time, it is determined that the condenser temperature and the outdoor ambient temperature meet a second set condition, then the rotation direction of the air outlet grille is adjusted to be perpendicular to the air outlet, wherein the second set condition includes: the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than the second set temperature difference.

[0021] According to one embodiment of the present invention, after the step of adjusting the rotation direction of the air outlet grille to be perpendicular to the air outlet, the temperature reduction control method of the air conditioner outdoor unit further includes:

[0022] When the rotation direction of the air outlet grille is adjusted to be perpendicular to the air outlet and lasts for at least a third set time, it is determined that the condenser temperature and the outdoor ambient temperature meet a third set condition, then control is performed to increase the superheat of the indoor unit of the air conditioner, wherein the third set condition includes: the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than the third set temperature difference.

[0023] According to an embodiment of the present invention, the step of controlling to increase the superheat degree of the indoor unit of the air conditioner specifically includes:

[0024] When the temperature difference between the condenser temperature and the outdoor environment temperature is within a first temperature difference range, controlling the superheat degree of the indoor unit to increase to a first superheat degree;

[0025] When the temperature difference between the condenser temperature and the outdoor environment temperature is within a second temperature difference range, controlling the superheat degree of the indoor unit to increase to a second superheat degree;

[0026] When the temperature difference between the condenser temperature and the outdoor environment temperature is within a third temperature difference range, controlling the superheat degree of the indoor unit to increase to a limit superheat degree;

[0027] Among them, the first temperature difference range is smaller than the second temperature difference range, the second temperature difference range is smaller than the third temperature difference range, and the first superheat is smaller than the second superheat, and the second superheat is smaller than the limit superheat.

[0028] According to a second aspect of the present invention, a temperature reduction control device for an outdoor unit of an air conditioner comprises:

[0029] An acquisition module, configured to receive a signal that the air conditioner is in cooling mode, and acquire a condenser temperature in an outdoor unit of the air conditioner and an outdoor ambient temperature of an outdoor environment where the outdoor unit is located;

[0030] A control module, configured to confirm that the condenser temperature and the outdoor ambient temperature meet a first set condition, and control a spray device to spray the outdoor unit;

[0031] Wherein, the spray device includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head, and the first setting condition is: the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than the first set temperature difference and lasts for at least the first set time.

[0032] An air conditioner according to a third aspect of the present invention includes an indoor unit and an outdoor unit;

[0033] The outdoor unit is connected to a spray device, which includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head;

[0034] The indoor unit includes a memory, a controller, and a computer program stored in the memory and executable on the controller. When the controller executes the computer program, the cooling control method for the outdoor unit of the air conditioner as described in the embodiment of the first aspect of the present invention is implemented.

[0035] According to one embodiment of the present invention, the spray device further comprises a water pump and a drain valve arranged on the branch pipe;

[0036] And / or, an air outlet grille is provided at the air outlet of the outdoor unit, and the air outlet grille includes a plurality of air outlet grille pieces, and the air outlet grille pieces are rotatably arranged relative to the air outlet.

[0037] The present invention provides a cooling control method for an outdoor unit of an air conditioner. The method aims to solve the influence of the grille on the heat dissipation of the outdoor unit of the air conditioner itself and reduce the air outlet temperature of the indoor unit. Specifically, the method does not need to optimize the grille, and can achieve the purpose of increasing the heat dissipation of the outdoor unit and reducing the air outlet temperature of the indoor unit only by changing the outdoor unit device and the air conditioner control logic, thereby further improving the cooling effect of the air conditioner, avoiding malfunctions of the air conditioner to ensure the normal operation of the air conditioner, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1It is a flow chart of a temperature reduction control method of an air-conditioning outdoor unit provided by the present invention;

[0040] Figure 2 It is a structural schematic diagram of a temperature reduction control device for an outdoor unit of an air conditioner provided by the present invention;

[0041] Figure 3 It is a structural schematic diagram of the spray device provided by the present invention;

[0042] Figure 4 This is one of the structural schematic diagrams of the outdoor unit of the air conditioner provided by the present invention;

[0043] Figure 5 This is the second structural schematic diagram of the outdoor unit of the air conditioner provided by the present invention;

[0044] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention.

[0045] Reference numerals:

[0046] 1. Outdoor unit; 11. Air outlet; 12. Outdoor fan; 2. Indoor unit; 3. Sprinkler head; 4. Branch pipe; 5. Water pump; 6. Drain valve; 7. Drain pipe; 8. Air outlet grille; 9. Installation grille; 110. Acquisition module; 120. Control module. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0049] The following describes the cooling control method, control device and air conditioner of the air-conditioning outdoor unit proposed by the present invention with reference to the accompanying drawings. Among them, before the embodiment of the present invention is described in detail, the entire application scenario is first described. The cooling control method, control device, electronic device and computer-readable storage medium of the air-conditioning outdoor unit of the embodiment of the present invention can be applied to the air conditioner locally, can also be applied to the cloud platform in the Internet field, or other types of cloud platforms in the Internet field, or can also be applied to third-party devices. Among them, the third-party device may include a variety of different types such as mobile phones, tablet computers, notebooks, car computers and other smart terminals.

[0050] The following description only takes the cooling control method applicable to air conditioning as an example. It should be understood that the control method of the embodiment of the present invention can also be applied to cloud platforms and third-party devices.

[0051] like Figure 1 As shown, the temperature reduction control method of the outdoor unit of the air conditioner according to the first embodiment of the present invention includes:

[0052] Step S1, receiving a signal indicating that the air conditioner is in cooling mode, obtaining the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor environment temperature of the outdoor environment where the outdoor unit 1 is located;

[0053] Step S2, based on the condenser temperature and the outdoor ambient temperature satisfying the first set condition, control the spray device to spray the outdoor unit 1, wherein the spray device includes a spray head 3 arranged inside the outdoor unit 1 and a branch pipe 4 connected to the drain pipe 7 of the indoor unit 2, and the branch pipe 4 is used to transport the condensed water of the indoor unit 2 to the spray head 3.

[0054] It can be understood that in the air conditioner to which the temperature reduction control method of the present invention is applicable, the outdoor unit 1 of the air conditioner is additionally provided with a spray device, such as Figure 3 As shown, the spray device is a cooling device drawn out from the drain pipe 7 of the indoor unit 2 and used for spraying cold water to the outdoor unit 1 to cool the outdoor unit 1. Specifically, the spray device is composed of a spray head 3 and a branch pipe 4. The branch pipe 4 connects the drain pipe 7 of the indoor unit 2 and the spray head 3. When the spray device is turned on, the condensed water generated by the indoor unit 2 flows to the spray head 3 through the branch pipe 4, and sprays water to the outdoor unit 1 through the spray head 3, thereby cooling the outdoor unit 1.

[0055] According to the cooling control method of the outdoor unit of the air conditioner according to the embodiment of the present invention, its specific working process is as follows: when the air conditioner is turned on and runs in the cooling mode, the temperature of the condenser in the outdoor unit 1 will gradually increase as the running time continues. In order to achieve cooling control of the outdoor unit of the air conditioner, the controller runs the cooling control method of the present invention. Specifically, after receiving the signal that the air conditioner is in the cooling mode, the controller first obtains the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor ambient temperature of the outdoor environment where the outdoor unit 1 is located. Then, the condenser temperature and the outdoor ambient temperature are compared and the comparison result is further analyzed and judged. After the controller determines that the above two parameters meet the preset first setting condition, it proves that the current condenser temperature is too high, that is, the heat dissipation effect of the outdoor unit 1 is poor. Therefore, in order to cool the outdoor unit 1 and the condenser in the outdoor unit 1, the controller will directly control the spray device to start to spray the outdoor unit 1, so as to cool down and dissipate heat of the outdoor unit 1 through cooled condensed water.

[0056] In the related art, air conditioners have become an indispensable part of daily life during the high temperatures in summer. However, when using the air conditioner, the poor heat dissipation of the air conditioner outdoor unit will lead to poor heat exchange, which in turn affects the cooling effect of the air conditioner indoor unit and even causes the outdoor unit to malfunction. In order to achieve consistency and beauty in appearance, most office buildings or residences usually add grilles to the location where the air conditioner outdoor unit is placed to conceal the air conditioner outdoor unit, but the presence of the grille will affect the heat dissipation efficiency of the air conditioner outdoor unit. First, the grille will reduce the air flow channel, resulting in poor air flow. Secondly, the presence of the grille will increase the resistance of the air conditioner, making the air conditioner require more energy to operate, thereby increasing energy consumption.

[0057] Generally speaking, optimizing the design of the grid can improve the heat dissipation efficiency of the air conditioner. The aperture size of the grid should be reasonably designed according to factors such as the radiator area, radiator material, and working environment of the air conditioner. In addition, the structure of the grid also needs to take into account the smoothness of air flow. A streamlined design can be used to reduce resistance and improve heat dissipation efficiency. The cleanliness of the grid will also affect the heat dissipation effect of the air conditioner. If dust, dirt and other substances accumulate on the grid, it will hinder the flow of air. Regular cleaning of the grid is one of the important measures to maintain the heat dissipation effect of the air conditioner. Therefore, the current existing solutions to the problem of the grille affecting heat dissipation are basically to optimize the grille itself.

[0058] For example, the existing technologies mostly use the following methods to improve the heat dissipation effect: (1) optimize the design of the grille to improve the heat dissipation efficiency of the air conditioner, and (2) improve the material and cleanliness of the grille. However, since the grille design of each office building and residential building is different, most grille designs are mainly based on the coordination and aesthetics of the building, and do not consider the heat dissipation of the air conditioner outdoor unit. Therefore, when designing the air conditioner outdoor unit, it is necessary to consider the effect of the grille on its own heat dissipation.

[0059] In summary, in order to solve the technical defects existing in the related technology, the present invention provides a cooling control method for the outdoor unit of an air conditioner. The method aims to solve the influence of the grille on the heat dissipation of the outdoor unit 1 of the air conditioner itself and reduce the air outlet temperature of the indoor unit 2. Specifically, the method does not need to optimize the grille. It can increase the heat dissipation of the outdoor unit 1 and reduce the air outlet temperature of the indoor unit 2 only by changing the device of the outdoor unit 1 and the control logic of the air conditioner, thereby further improving the cooling effect of the air conditioner, avoiding malfunctions of the air conditioner to ensure the normal operation of the air conditioner, and improving the user experience.

[0060] According to some embodiments of the present invention, the first set condition is: the condenser temperature is higher than the outdoor ambient temperature and the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than a first set temperature difference and lasts for at least a first set time.

[0061] For example, the first set condition is that the condenser temperature is higher than the outdoor ambient temperature and the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than 3° C. and lasts for at least one hour.

[0062] It should be pointed out that the above-mentioned first set temperature difference and the first set time are both pre-set preset values. The above parameters can be specifically selected according to different usage conditions such as the environment in which the air conditioner is located and user requirements. The present invention does not make any special limitations on the specific values ​​of the first set temperature difference and the first set time.

[0063] According to some embodiments of the present invention, the step of controlling the spray device to spray the outdoor unit 1 specifically includes:

[0064] When the water pump 5 in the spray device is turned on, the rotation speed of the water pump 5 is adjusted according to the temperature difference between the condenser temperature and the outdoor ambient temperature, wherein, Figure 3 As shown, the water pump 5 is arranged on the branch pipe 4.

[0065] In this way, by adjusting the rotation speed of the water pump 5, the cooling effect of the spray device on the outdoor unit 1 can be adjusted. It can be understood that when the condenser temperature is higher, the cooling effect required by the outdoor unit 1 is better. At this time, the rotation speed of the water pump 5 needs to be adjusted to a higher level, so as to provide more cooling water to spray the outdoor unit 1 and improve its heat dissipation effect.

[0066] Further, the step of adjusting the rotation speed of the water pump 5 according to the temperature difference between the condenser temperature and the outdoor ambient temperature specifically includes:

[0067] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the first temperature difference range, adjusting the rotation speed of the water pump 5 to the first rotation speed;

[0068] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the second temperature difference range, adjusting the rotation speed of the water pump 5 to the second rotation speed;

[0069] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the third temperature difference range, adjusting the rotation speed of the water pump 5 to the maximum rotation speed;

[0070] The first temperature difference interval is smaller than the second temperature difference interval, the second temperature difference interval is smaller than the third temperature difference interval, the first rotational speed is smaller than the second rotational speed, and the second rotational speed is smaller than the maximum rotational speed.

[0071] In this way, when the temperature difference between the condenser temperature and the outdoor ambient temperature is in different ranges, it proves that the heat dissipation demand of the current outdoor unit 1 is also different, that is, the higher the temperature difference, the higher the heat dissipation demand of the outdoor unit 1. At this time, in order to match the current heat dissipation demand of the outdoor unit 1, the controller needs to increase the speed of the water pump 5 to a set level, such as the first speed matching the first temperature difference interval, the second speed matching the second temperature difference interval, and the maximum speed matching the third temperature difference interval.

[0072] According to some embodiments of the present invention, after the step of controlling the spray device to spray the outdoor unit 1, the temperature reduction control method of the air conditioner outdoor unit further includes:

[0073] Make sure the condenser temperature is less than or equal to the outdoor ambient temperature and control the spray device to close. Figure 3 As shown, the water pump 5 in the spraying device is turned off, and the drain valve 6 on the branch pipe 4 is closed.

[0074] It can be understood that if the cooling capacity provided by the spray device to the outdoor unit 1 is greater than the heat generated by the outdoor unit 1 itself, the temperature of the outdoor unit 1 will continue to decrease under the action of the spray until the condenser temperature is less than or equal to the outdoor ambient temperature. At this time, the outdoor unit 1 resumes normal operation, so the controller can directly turn off the spray device.

[0075] like Figure 4 and 5 As shown, according to some embodiments of the present invention, an air outlet grille is provided at the air outlet 11 of the outdoor unit 1 , and the air outlet grille includes a plurality of air outlet grilles 8 , and the air outlet grilles 8 are rotatably arranged relative to the air outlet 11 .

[0076] After the step of controlling the spraying device to spray the outdoor unit 1, the temperature reduction control method of the air conditioner outdoor unit further includes:

[0077] When the spray device is turned on and continuously operates for at least the second set time, it is determined that the condenser temperature and the outdoor ambient temperature meet the second set condition, and the rotation direction of the air outlet grille 8 is adjusted to be perpendicular to the air outlet 11 .

[0078] In this embodiment, after the spray device has been running for a long time (for example, the second set time), if the condenser temperature and the outdoor ambient temperature meet the second set condition, it proves that the condenser temperature of the outdoor unit 1 is still at a relatively high temperature level and has not reached the normal temperature level. At this time, the outdoor unit 1 still has a relatively high heat dissipation requirement. At this time, in order to achieve further heat dissipation of the outdoor unit 1, the present invention controls the rotation direction of the air outlet grille 8 so that the rotation direction of the air outlet grille 8 is perpendicular to the air outlet 11, thereby utilizing the air outlet grille 8 to form an air guide plate, and directly guides the hot air flowing out of the air outlet 11 to the outside of the grille, thereby reducing the influence of the high temperature of the outside air on the grille inlet temperature, thereby improving the heat exchange efficiency.

[0079] It can be understood that when the outdoor unit 1 is installed in the mounting grille 9, the air outlet grille of the outdoor unit 1 is located between the air outlet 11 of the outdoor unit 1 and the mounting grille 9. To further improve the heat dissipation effect, the controller controls the air outlet grille 8 of the air outlet grille to rotate and be perpendicular to the direction of the air outlet 11. At this time, the air outlet grille 8 forms a horizontal air guide plate structure between the air outlet 11 of the outdoor unit 1 and the mounting grille 9, and then forms a horizontal air duct structure (such as Figure 5 As shown), in this way, the hot air blown out from the air outlet 11 is directly guided to the outside of the mounting grille 9 via the horizontal air duct structure, thereby preventing the outlet air flow from escaping into the inside of the mounting grille 9, that is, preventing the temperature inside the mounting grille 9 from continuously rising, so that the heat of the outdoor unit 1 can be discharged to the outside of the mounting grille 9 in time, thereby improving the heat dissipation effect of the outdoor unit 1.

[0080] Furthermore, the second setting condition includes: the current condenser temperature is higher than the outdoor ambient temperature, and the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than the second set temperature difference.

[0081] For example, the second setting condition includes: the current condenser temperature is higher than the outdoor ambient temperature, the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than 5° C., and the second setting time is two hours.

[0082] It should be pointed out that the above-mentioned second set temperature difference and the second set time are both pre-set preset values. The above parameters can be specifically selected according to different usage conditions such as the environment in which the air conditioner is located and user requirements. The present invention does not make any special limitations on the specific values ​​of the second set temperature difference and the second set time.

[0083] According to some embodiments of the present invention, after the step of adjusting the rotation direction of the air outlet grille 8 to be perpendicular to the air outlet 11, the temperature reduction control method of the air conditioner outdoor unit further includes:

[0084] When the rotation direction of the air outlet grille 8 is adjusted to be perpendicular to the air outlet 11 and lasts for at least a third set time, it is determined that the condenser temperature and the outdoor ambient temperature meet the third set condition, and the superheat degree of the indoor unit 2 of the air conditioner is controlled to be increased.

[0085] In this embodiment, when the spray device continues to run for the second set time, and the rotation direction of the air outlet grille 8 is adjusted to be perpendicular to the air outlet 11 and continues for at least the third set time, if the condenser temperature and the outdoor ambient temperature meet the third set condition, it proves that the condenser temperature of the outdoor unit 1 is still at a relatively high temperature level and has not reached the normal temperature level. At this time, the outdoor unit 1 still has a relatively high heat dissipation demand. At this time, in order to achieve further heat dissipation of the outdoor unit 1, the controller controls and adjusts the superheat of the indoor unit 2, and reduces the air outlet temperature of the outdoor unit 1 by increasing the superheat, thereby avoiding excessive temperature rise of the outdoor unit 1 and affecting normal cooling.

[0086] Furthermore, the third setting condition includes: the current condenser temperature is higher than the outdoor ambient temperature, and the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than a third set temperature difference.

[0087] For example, the third setting condition includes: the current condenser temperature is higher than the outdoor ambient temperature, and the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than 5°C.

[0088] According to some specific embodiments of the present invention, the step of controlling to increase the superheat degree of the indoor unit 2 of the air conditioner specifically includes:

[0089] According to the range of the temperature difference between the condenser temperature and the outdoor ambient temperature, the superheat degree of the indoor unit 2 is determined and adjusted.

[0090] Further, in a specific embodiment, the step of determining and adjusting the superheat of the indoor unit 2 according to the range of the temperature difference between the condenser temperature and the outdoor ambient temperature specifically includes:

[0091] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the first temperature difference range, controlling the superheat degree of the indoor unit 2 to increase to the first superheat degree;

[0092] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the second temperature difference range, controlling the superheat degree of the indoor unit 2 to increase to the second superheat degree;

[0093] When the temperature difference between the condenser temperature and the outdoor ambient temperature is within the third temperature difference range, the superheat degree of the indoor unit 2 is controlled to increase to the limit superheat degree.

[0094] Among them, the first temperature difference range is smaller than the second temperature difference range, the second temperature difference range is smaller than the third temperature difference range, and the first superheat is smaller than the second superheat, and the second superheat is smaller than the limit superheat.

[0095] In this way, when the temperature difference between the condenser temperature and the outdoor ambient temperature is in different intervals, it proves that the current heat dissipation demand of the outdoor unit 1 is also different, that is, the higher the temperature difference, the higher the heat dissipation demand of the outdoor unit 1. At this time, in order to match the current heat dissipation demand of the outdoor unit 1, the controller needs to increase the superheat of the indoor unit 2 to a set level, such as the first superheat matching the first temperature difference range, the second superheat matching the second temperature difference range, and the extreme superheat matching the third temperature difference range.

[0096] It can be understood that there is a limit to the increase in superheat, namely the limit superheat. When the superheat reaches the limit superheat, the superheat will no longer be increased.

[0097] The temperature reduction control device of the air-conditioning outdoor unit provided by the present invention is described below. The temperature reduction control device of the air-conditioning outdoor unit described below and the temperature reduction control method of the air-conditioning outdoor unit described above can correspond to each other.

[0098] like Figure 2 As shown, according to the second aspect of the present invention, the temperature reduction control device of the air conditioner outdoor unit of the embodiment 1 includes:

[0099] The acquisition module 110 is used to receive a signal indicating that the air conditioner is in cooling mode, and acquire the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor environment temperature of the outdoor environment where the outdoor unit 1 is located;

[0100] The control module 120 is used to control the spray device to spray the outdoor unit 1 according to whether the condenser temperature and the outdoor ambient temperature meet the first set condition, wherein the spray device includes a spray head 3 arranged inside the outdoor unit 1 and a branch pipe 4 connected to the drain pipe 7 of the indoor unit 2, and the branch pipe 4 is used to transport the condensed water of the indoor unit 2 to the spray head 3.

[0101] like Figures 3 to 5 As shown, the air conditioner according to the embodiment of the second aspect of the present invention includes a memory, a controller, and a computer program stored in the memory and executable on the controller. When the controller executes the computer program, the cooling control method of the outdoor unit of the air conditioner is implemented. The air conditioner also includes an outdoor unit 1 and an indoor unit 2.

[0102] Among them, the cooling control device is connected to the outdoor unit 1 and the indoor unit 2 respectively, and a spray device is provided in the outdoor unit 1, which includes a spray head 3 arranged inside the outdoor unit 1 and a branch pipe 4 connected to the drain pipe 7 of the indoor unit 2, and the branch pipe 4 is used to transport the condensed water of the indoor unit 2 to the spray head 3.

[0103] like Figure 3 As shown, according to some embodiments of the present invention, the spray device further includes a water pump 5 and a drain valve 6 arranged on the branch pipe 4.

[0104] like Figure 4 and Figure 5 As shown, according to some embodiments of the present invention, the outdoor fan 12 of the outdoor unit 1 is arranged opposite to the air outlet 11, and an air outlet grille is provided at the air outlet 11 of the outdoor unit 1. The air outlet grille includes a plurality of air outlet grilles 8, and the air outlet grilles 8 are rotatably arranged relative to the air outlet 11.

[0105] It can be understood that in order to achieve further heat dissipation for the outdoor unit 1, the rotation direction of the air outlet grille 8 can be adjusted to a direction perpendicular to the air outlet 11, so that the air outlet grille 8 is used to form an air guide plate to directly guide the hot air flowing out of the air outlet 11 to the outside of the grille. At this time, the air outlet grille 8 is shielded and sealed in a direction parallel to the air outlet 11, that is, the wind from the air outlet 11 is prevented from escaping from a direction parallel to the air outlet 11 to the installation grille 9.

[0106] Furthermore, the above-mentioned air outlet grille 8 can be connected to the driving end of a driving motor (not shown in the figure), so that the driving motor drives the air outlet grille 8 to rotate relative to the air outlet 11 to adjust its air guide direction, and the driving motor is connected to the above-mentioned cooling control device, thereby driving the air outlet grille 8 to rotate after receiving the instruction of the cooling control device.

[0107] Figure 6 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 6 As shown, the electronic device may include: a processor 810, a communication interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication interface 820 and the memory 830 communicate with each other through the communication bus 840. The processor 810 may call the logic instructions in the memory 830 to execute the temperature reduction control method of the outdoor unit of the air conditioner, including: receiving a signal that the air conditioner is in a cooling mode, obtaining the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor environment temperature of the outdoor environment where the outdoor unit 1 is located; according to the condenser temperature and the outdoor environment temperature satisfying the first setting condition, controlling the spray device to spray the outdoor unit 1.

[0108] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0109] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute a cooling control method for an air-conditioning outdoor unit, including: receiving a signal that the air conditioner is in a cooling mode, obtaining the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor ambient temperature of the outdoor environment in which the outdoor unit 1 is located; and controlling the spray device to spray the outdoor unit 1 based on the condenser temperature and the outdoor ambient temperature satisfying a first set condition.

[0110] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute a cooling control method for an air-conditioning outdoor unit, including: receiving a signal that the air conditioner is in a cooling mode, obtaining the condenser temperature in the outdoor unit 1 of the air conditioner and the outdoor ambient temperature of the outdoor environment in which the outdoor unit 1 is located; and controlling the spray device to spray the outdoor unit 1 based on the condenser temperature and the outdoor ambient temperature satisfying a first set condition.

[0111] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0112] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling the temperature drop of an outdoor unit of an air conditioner, characterized in that: include: When the air conditioner is in cooling mode, obtaining a condenser temperature in an outdoor unit of the air conditioner and an outdoor ambient temperature of an outdoor environment where the outdoor unit is located; Confirming that the condenser temperature and the outdoor environment temperature meet a first set condition, and controlling the spray device to spray the outdoor unit; Wherein, the spray device includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head, and the first setting condition is: the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than the first set temperature difference and lasts for at least the first set time.

2. The temperature reduction control method of the air conditioner outdoor unit according to claim 1, characterized in that: The step of controlling the spray device to spray the outdoor unit specifically includes: When it is determined that the water pump in the spray device is turned on, the rotation speed of the water pump is adjusted according to the temperature difference between the condenser temperature and the outdoor ambient temperature, wherein the water pump is arranged on the branch pipe.

3. The temperature reduction control method of the air conditioner outdoor unit according to claim 2, characterized in that: The step of adjusting the rotation speed of the water pump according to the temperature difference between the condenser temperature and the outdoor ambient temperature specifically includes: When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a first temperature difference range, adjusting the water pump speed to a first speed; When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a second temperature difference range, adjusting the water pump speed to a second speed; When the temperature difference between the condenser temperature and the outdoor ambient temperature is within a third temperature difference range, adjusting the water pump speed to a maximum speed; The first temperature difference interval is smaller than the second temperature difference interval, the second temperature difference interval is smaller than the third temperature difference interval, the first rotational speed is smaller than the second rotational speed, and the second rotational speed is smaller than the maximum rotational speed.

4. The temperature reduction control method of an air-conditioning outdoor unit according to any one of claims 1 to 3, characterized in that: After the step of controlling the spraying device to spray the outdoor unit, the method further includes: Determine that the condenser temperature is less than or equal to the outdoor ambient temperature, control the water pump in the spray device to turn off, and close the drain valve on the branch pipe.

5. The temperature reduction control method of an air-conditioning outdoor unit according to any one of claims 1 to 3, characterized in that: An air outlet grille is provided at the air outlet of the outdoor unit, and the air outlet grille includes a plurality of air outlet grille pieces, and the air outlet grille pieces are rotatably arranged relative to the air outlet; After the step of controlling the spraying device to spray the outdoor unit, the method further includes: When the spray device is turned on and continuously operates for at least a second set time, it is determined that the condenser temperature and the outdoor ambient temperature meet a second set condition, then the rotation direction of the air outlet grille is adjusted to be perpendicular to the air outlet, wherein the second set condition includes: the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than the second set temperature difference.

6. The temperature reduction control method of the air conditioner outdoor unit according to claim 5, characterized in that: After the step of adjusting the rotation direction of the air outlet grille to be perpendicular to the air outlet, the method further includes: When the rotation direction of the air outlet grille is adjusted to be perpendicular to the air outlet and lasts for at least a third set time, it is determined that the condenser temperature and the outdoor ambient temperature meet a third set condition, then control is performed to increase the superheat of the indoor unit of the air conditioner, wherein the third set condition includes: the temperature difference between the current condenser temperature and the outdoor ambient temperature is greater than the third set temperature difference.

7. The temperature reduction control method of the air conditioner outdoor unit according to claim 6, characterized in that: The step of controlling to increase the superheat degree of the indoor unit of the air conditioner specifically includes: When the temperature difference between the condenser temperature and the outdoor environment temperature is within a first temperature difference range, controlling the superheat degree of the indoor unit to increase to a first superheat degree; When the temperature difference between the condenser temperature and the outdoor environment temperature is within a second temperature difference range, controlling the superheat degree of the indoor unit to increase to a second superheat degree; When the temperature difference between the condenser temperature and the outdoor environment temperature is within a third temperature difference range, controlling the superheat degree of the indoor unit to increase to a limit superheat degree; Among them, the first temperature difference range is smaller than the second temperature difference range, the second temperature difference range is smaller than the third temperature difference range, and the first superheat is smaller than the second superheat, and the second superheat is smaller than the limit superheat.

8. A temperature reduction control device for an air conditioner outdoor unit, characterized in that: include: An acquisition module, configured to receive a signal that the air conditioner is in cooling mode, and acquire a condenser temperature in an outdoor unit of the air conditioner and an outdoor ambient temperature of an outdoor environment where the outdoor unit is located; A control module, configured to confirm that the condenser temperature and the outdoor ambient temperature meet a first set condition, and control a spray device to spray the outdoor unit; Wherein, the spray device includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head, and the first setting condition is: the temperature difference between the condenser temperature and the outdoor ambient temperature is greater than the first set temperature difference and lasts for at least the first set time.

9. An air conditioner, characterized in that: Includes indoor and outdoor units; The outdoor unit is connected to a spray device, which includes a spray head and a branch pipe arranged inside the outdoor unit, one end of the branch pipe is connected to the drain pipe of the indoor unit and the other end is connected to the spray head; The indoor unit includes a memory, a controller, and a computer program stored in the memory and executable on the controller. When the controller executes the computer program, the temperature reduction control method of the air-conditioning outdoor unit according to any one of claims 1 to 7 is implemented.

10. The air conditioner according to claim 9, characterized in that: The spray device also includes a water pump and a drain valve arranged on the branch pipe; And / or, an air outlet grille is provided at the air outlet of the outdoor unit, and the air outlet grille includes a plurality of air outlet grille pieces, and the air outlet grille pieces are rotatably arranged relative to the air outlet.

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