Outdoor unit control method, outdoor unit and storage medium

Abstract

The invention relates to the technical field of heating and ventilation systems, in particular to a control method of an outdoor unit, the outdoor unit and a storage medium. Preset parameters of the outdoor unit are obtained; whether the outdoor unit meets a first condition or not is judged through the preset parameters; and when the first condition is met, the water inlet pipe assembly is controlled to be communicated with the spraying assembly, so that the spraying assembly can provide liquid for the refrigerating device. The heating device is provided with the spraying assembly, the water outlet pipe assembly and the spraying assembly can both communicate with the water inlet pipe assembly, and the water source can communicate with the spraying assembly through the water inlet pipe assembly so as to supply water to the spraying assembly. And the liquid can act on the refrigerating device through a nozzle of the spraying assembly. According to the spraying assembly, the water inlet pipe assembly in the heating device can be utilized, a water inlet pipeline does not need to be additionally arranged for the spraying assembly, and therefore the procedure of additionally opening holes can be omitted, and the installation difficulty can be lowered.

Description

Technical Field

[0001] The present invention relates to the technical field of heating and ventilation systems, and in particular to a control method for an outdoor unit, an outdoor unit and a storage medium. Background Art

[0002] A HVAC system typically consists of a refrigeration unit and a heating unit. The refrigeration unit generates cold air, which cools the room through the indoor refrigeration unit. The heating unit heats a liquid, which is then piped into the room, providing heating. The refrigeration and heating units are housed within the same outdoor unit, minimizing the space occupied by the HVAC system. The refrigeration unit typically includes a condenser to absorb heat from the cooling medium, and this condenser is easily affected by the outside air temperature of the outdoor unit. To address the issue of reduced condenser performance, a cooling device can be installed to cool the condenser.

[0003] In the related art, it is difficult to install cooling equipment. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. In view of this, the embodiments of the present application hope to provide a control method of an external unit, an external unit and a storage medium to reduce the difficulty of installing a cooling device.

[0005] To achieve the above objectives, an embodiment of the present application provides, on one hand, a control method for an outdoor unit, which is applied to a HVAC system. The outdoor unit includes a refrigeration device and a heating device. The heating device includes a water inlet pipe assembly, a water outlet pipe assembly, and a spray assembly. The water outlet pipe assembly and the spray assembly can both be connected to the water inlet pipe assembly. The control method includes: Obtaining preset parameters of the outdoor unit; Determining whether the outdoor unit meets a first condition by using the preset parameters; When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device.

[0006] The control method of the external unit according to the embodiment of the present application has at least the following beneficial effects: In the solution of the embodiment of the present application, the heating device is provided with a spray assembly, and the water outlet pipe assembly and the spray assembly can both be connected to the water inlet pipe assembly, and the water source can be connected to the spray assembly through the water inlet pipe assembly to supply water to the spray assembly. The liquid can act on the refrigeration device through the nozzle of the spray assembly. The spray assembly can utilize the water inlet pipe assembly in the heating device, and there is no need to set up an additional water inlet pipeline for the spray assembly, thereby eliminating the need for additional hole drilling processes and reducing the difficulty of installation. Furthermore, the outdoor unit can control the spray assembly according to preset parameters and the first condition, so that the spray assembly can be connected to the water inlet pipe assembly under the set conditions, thereby supplying water to the refrigeration device.

[0007] According to some embodiments of the present application, the preset parameter is the outside air temperature of the outdoor unit, the first condition is that the outside air temperature is greater than or equal to a first preset temperature, and when the first condition is met, the step of controlling the water inlet pipe assembly to communicate with the spray assembly so that the spray assembly can provide liquid to the refrigeration device includes: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly cools the refrigeration device.

[0008] According to some embodiments of the present application, the step of controlling the water inlet pipe assembly to communicate with the spray assembly so that the spray assembly cools the refrigeration device includes: When the second condition is met, controlling the spray assembly to the first state; When the outside air temperature is lower than a second preset temperature and higher than the first preset temperature, controlling the spray assembly to a second state; The cooling capacity of the first state is greater than the cooling capacity of the second state, and the second condition is that the outside air temperature of the outdoor unit is greater than or equal to a second preset temperature, and the second preset temperature is greater than the first preset temperature.

[0009] According to some embodiments of the present application, the spray assembly includes a first pipe and a second pipe, the first pipe is connected to the water inlet pipe assembly and the second pipe respectively, and the number of the second pipes is multiple. The step of controlling the spray assembly to the first state includes: When the second condition is met, increasing the number of connections between the second pipe and the first pipe; and / or, When the second condition is met, the power of the water pump of the water inlet pipe assembly is increased.

[0010] According to some embodiments of the present application, the spray assembly includes a first pipe and a second pipe, the first pipe is connected to the water inlet pipe assembly and the second pipe respectively, and the number of the second pipes is multiple. The step of controlling the spray assembly to the second state includes: When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, reducing the number of the second pipes connected to the first pipe; and / or, When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, the power of the water pump of the water inlet pipe assembly is reduced.

[0011] According to some embodiments of the present application, a plurality of second pipes are arranged at intervals along a height direction of the external unit, and the step of reducing the number of second pipes connected to the first pipe includes: At least one of the second pipes located at the bottom is closed, and the second pipe located at the top is controlled to communicate with the first pipe.

[0012] According to some embodiments of the present application, the preset parameter is the non-operating time of the refrigeration device, the first condition is that the non-operating time is greater than or equal to the first preset time, and when the first condition is met, the step of controlling the water inlet pipe assembly to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device includes: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly cleans the refrigeration device.

[0013] According to some embodiments of the present application, the spray assembly includes a first pipe, a second pipe and a third pipe, the first pipe is connected to the water inlet pipe assembly and the second pipe respectively, the second pipe and the third pipe can both be connected to the first pipe, the second pipe is used to cool the refrigeration device, the third pipe is used to clean the refrigeration device, and the third pipe is located above the second pipe.

[0014] The present application also provides an external unit, comprising: Refrigeration equipment; A heating device, comprising a water inlet pipe assembly, a water outlet pipe assembly, and a spray assembly, wherein the water inlet pipe assembly is capable of communicating with the spray assembly and the water outlet pipe assembly, respectively; the water inlet pipe assembly is configured to communicate with a water source; the spray assembly comprises a nozzle, and when the water inlet pipe assembly is in communication with the spray assembly, the spray assembly is capable of providing liquid to the cooling device; A control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of any one of the above-mentioned methods for controlling an external unit.

[0015] The application further provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program is executed by a processor to implement the steps of the control method of the external machine according to any one of the above.

[0016] Additional aspects and advantages of the application will become apparent in the following description, or will be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Structure top view of a heating device according to an embodiment of the application; Figure 2 Structure schematic diagram of a heating device according to an embodiment of the application; Figure 3 Structure rear view of an external machine according to an embodiment of the application; Figure 4 Structure schematic diagram of an external machine according to an embodiment of the application; Figure 5 Flowchart of a control method of an external machine according to an embodiment of the application; Figure 6 Flowchart of a control method of an external machine according to an embodiment of the application; Figure 7 Flowchart of a control method of an external machine according to an embodiment of the application; Figure 8 Flowchart of a control method of an external machine according to an embodiment of the application; Figure 9 Flowchart of a control method of an external machine according to an embodiment of the application.

[0018] Reference signs: 100, refrigeration device; 100a, air inlet side; 200, heating device; 210, water inlet pipe assembly; 210a, first connecting pipe; 211, water inlet pipe; 212, water inlet valve; 213, expansion tank; 220, water outlet pipe assembly; 220a, second connecting pipe; 221, water outlet pipe; 222, heat exchanger; 230, spraying assembly; 230a, first nozzle; 230b, second nozzle; 231, first pipe; 232, second pipe; 233, third pipe; 240, water pump; 250, three-way valve. DETAILED DESCRIPTION

[0019] The embodiments of the technical solutions of the application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the application, and therefore only serve as examples, and cannot limit the protection scope of the application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0021] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc. are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0024] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "top", "bottom", "upper", and "lower" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0025] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0026] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be interpreted in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact with each other without interaction force or contact between two objects in contact with each other with interaction force.

[0027] In the related art, the inside of the outdoor unit is usually provided with a refrigeration device to generate cold air to cool the indoor. In the case that the outdoor air temperature of the outdoor unit is high, it will affect the heat absorption effect of the condenser in the refrigeration device to a certain extent. In the related art, an additional set of spraying device is added outside the outdoor unit, the water inlet pipe of the spraying device is communicated with the water source in the indoor to supply water to the nozzle of the spraying device, at least part of the water inlet pipe needs to be inserted into the indoor to communicate with the water source, and at least part of the water inlet pipe needs to be extended outside to communicate with the nozzle, the consumer needs to additionally open a hole in the wall for the water inlet pipe, and the outdoor part of the spraying device needs to be additionally fixed.

[0028] The heating device 200 of the present application comprises a spraying assembly 230, and the water inlet pipe assembly 210 is selectively communicated with the water outlet pipe assembly 220 and the spraying assembly 230. The spraying assembly 230 can utilize the original water inlet pipe assembly 210 in the heating device 200, so that the additional hole in the wall can be saved, and the installation difficulty is low.

[0029] The present application provides a heating and ventilation system, comprising a first indoor unit, a second indoor unit and an outdoor unit.

[0030] Exemplarily, taking the heating and ventilation system with the heating medium as refrigerant and the heating object as water as an example, the first indoor unit and the second indoor unit of the heating and ventilation system are both air conditioner indoor units, and the first indoor unit and the second indoor unit form a circulating flow path with the outdoor unit.

[0031] Exemplarily, in the heating and ventilation system with air and water as medium, the first indoor unit of the heating and ventilation system can be an air conditioner indoor unit, and the second indoor unit can be a floor heating indoor unit.

[0032] The present application also provides an outdoor unit, please refer to Figure 1 and Figure 2The outdoor unit includes a refrigeration device 100 and a heating device 200. The heating device 200 includes a water inlet pipe assembly 210, a water outlet pipe assembly 220, and a spray assembly 230. The water outlet pipe assembly 220 and the spray assembly 230 can both be connected to the water inlet pipe assembly 210. The water inlet pipe assembly 210 is used to connect to a water source. The spray assembly 230 includes a nozzle. When the water inlet pipe assembly 210 is connected to the spray assembly 230, liquid can pass through the nozzle to contact the refrigeration device 100. Exemplarily, the refrigeration device 100 includes a condenser, and the water inlet pipe assembly 210 can be connected to a consumer's indoor water source. It can be understood that when the water inlet pipe assembly 210 is connected to the water outlet pipe assembly 220, the liquid in the water source can flow into the water outlet pipe assembly 220, thereby being heated by the water outlet pipe assembly 220. The heated liquid flows back into the room to heat the temperature in the room. The nozzle is used to atomize the liquid. The volume of the atomized liquid is larger, thereby increasing the cooling area of ​​the nozzle, and the cooling effect of the spray assembly 230 is better.

[0033] In the embodiment of the present application, the heating device 200 is provided with a spray assembly 230. Both the water outlet pipe assembly 220 and the spray assembly 230 can be connected to the water inlet pipe assembly 210. When the outside air temperature of the outdoor unit is high, the water inlet pipe assembly 210 can be connected to the spray assembly 230, so that the water source can be connected to the spray assembly 230 through the water inlet pipe assembly 210 to supply water to the spray assembly 230. The liquid can act on the refrigeration device 100 through the nozzle of the spray assembly 230, thereby cooling the refrigeration device 100. The spray assembly 230 can utilize the water inlet pipe assembly 210 of the heating device 200, eliminating the need to provide an additional water inlet pipe 211 for the spray assembly 230. This can eliminate the need for additional drilling processes and reduce the difficulty of installation. Furthermore, the spray assembly 230 is integrated into the heating device 200 , that is, after the outdoor unit is fixedly installed, there is no need to perform additional installation on the spray assembly 230 , thereby reducing additional assembly steps for the spray assembly 230 .

[0034] The control method of the outdoor unit provided in this application is applied to the HVAC system. Figure 5 , control methods include: Step S1: Obtaining preset parameters of the outdoor unit; Step S2: judging whether the outdoor unit meets the first condition through preset parameters; Step S3: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device.

[0035] In the embodiment of the present application, the heating device 200 is provided with a spray assembly 230. The water outlet pipe assembly 220 and the spray assembly 230 can both be connected to the water inlet pipe assembly 210. The water source can be connected to the spray assembly 230 through the water inlet pipe assembly 210 to supply water to the spray assembly 230. The liquid can act on the refrigeration device 100 through the nozzle of the spray assembly 230. The spray assembly 230 can utilize the water inlet pipe assembly 210 in the heating device 200, eliminating the need to set up an additional water inlet pipe 211 for the spray assembly 230, thereby eliminating the need for additional drilling processes and reducing the difficulty of installation. Furthermore, the outdoor unit can control the spray assembly 230 according to preset parameters and the first condition, so that the spray assembly 230 can be connected to the water inlet pipe assembly 210 under the set conditions, thereby supplying water to the refrigeration device 100.

[0036] In one embodiment, please refer to Figure 6 , the preset parameter is the outdoor air temperature of the outdoor unit, and the first condition is that the outdoor air temperature is greater than or equal to the first preset temperature. It can be understood that the outdoor air temperature of the outdoor unit refers to the ambient temperature of the outdoor unit. For example, the outdoor unit is installed inside a shell located outdoors, and the outdoor air temperature is approximately equal to the temperature inside the shell. The outdoor air temperature of the outdoor unit can be measured by a temperature sensor. For example, the range of the first preset temperature is 35°C~40°C. When the first condition is met, the steps of controlling the water inlet pipe assembly 210 to be connected to the spray assembly 230 so that the spray assembly 230 can provide liquid to the refrigeration device 100 include: Step S30: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly, so that the spray assembly cools the refrigeration device.

[0037] In the solution of the embodiment of the present application, the spray assembly 230 can provide liquid to the refrigeration device 100 when the outside air temperature of the external unit is high, thereby cooling the refrigeration device 100, slowing down the rise in the condenser temperature of the refrigeration device 100, and increasing the working capacity of the refrigeration device 100.

[0038] In one embodiment, please refer to Figure 7 The steps of controlling the water inlet pipe assembly 210 to communicate with the spray assembly 230 so that the spray assembly 230 cools the refrigeration device 100 include: Step S300: When the second condition is met, the spray assembly is controlled to the first state; Step S301: When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, controlling the spray assembly to the second state; The cooling capacity of the first state is greater than the cooling capacity of the second state. It can be understood that the cooling capacity is the temperature drop of the refrigeration device 100 in the same time. In the same time period, the temperature drop of the refrigeration device 100 in the case that the spraying assembly 230 is in the first state is greater than the temperature drop of the refrigeration device 100 in the case that the spraying assembly 230 is in the second state. The second condition is that the outdoor air temperature of the outdoor unit is greater than or equal to the second preset temperature, and the second preset temperature is greater than the first preset temperature.

[0039] In the scheme of the embodiment of the application, in the case that the spraying assembly 230 is used to cool the refrigeration device 100, the spraying assembly 230 is controlled by the first preset temperature and the second preset temperature. In the case that the temperature of the refrigeration device 100 is low, the spraying assembly 230 is in the second state with low cooling capacity, so as to adapt to the temperature of the refrigeration device 100 and save resources. In the case that the outdoor air temperature of the refrigeration device 100 is high, the spraying assembly 230 is in the first state with high cooling capacity, so as to quickly reduce the temperature of the refrigeration device 100.

[0040] In an embodiment, please refer to Figure 1 and Figure 2 The heating device 200 further comprises a water pump 240 installed on the water inlet pipe assembly 210, and the water pump 240 is located upstream of the three-way valve 250. The water pump 240 is located downstream of the water inlet valve 212, and the water pump 240 can pump the water flow in the water inlet pipe 211 to the spraying assembly 230 or the water outlet pipe assembly 220. Exemplarily, the water outlet pipe assembly 220 comprises a water outlet pipe 221 and a heat exchanger 222 in communication with the water outlet pipe 221, and the water outlet pipe 221 is connected to the three-way valve 250. The water pump 240 in the heating device 200 can be used to pump the water flow to the spraying assembly 230 or the water outlet pipe assembly 220, and the structure in the heating device 200 is relatively simple.

[0041] It can be understood that other embodiments of the application are not limited to the heating device 200 comprising the water pump 240 installed on the water inlet pipe assembly 210 and the three-way valve 250. Exemplarily, the water inlet pipe assembly 210 comprises a first water inlet pipe 211, a second water inlet pipe 211 and a third water inlet pipe 211, the second water inlet pipe 211 is in communication with the spraying assembly 230 and the three-way valve 250 respectively, the third water inlet pipe 211 is in communication with the water outlet pipe assembly 220 and the three-way valve 250 respectively, the first water inlet pipe 211 is in communication with an external water source and the three-way valve 250 respectively, the first water inlet pipe 211 is located upstream of the second water inlet pipe 211 and the third water inlet pipe 211, and the first water inlet pipe 211 can selectively communicate with the second water inlet pipe 211 and the third water inlet pipe 211 through the three-way valve 250, and a water pump is correspondingly arranged on each of the second water inlet pipe 211 and the third water inlet pipe 211.

[0042] In an embodiment, please refer to Figure 1 , the expansion tank 213 and the water pump 240 are spaced apart along the length direction of the heating device 200. For example, the length direction of the heating device 200 is orthogonal to the thickness direction of the heating device 200, and the water inlet valve 212 is located between the water pump 240 and the expansion tank 213. Figure 1 In the direction indicated by the arrow R3, the thickness direction of the heating device 200 is as shown in FIG. Figure 1 The expansion tank 213 and the water pump 240 are arranged in a manner that allows for more efficient use of the space in the longitudinal direction of the heating device 200. Furthermore, the expansion tank 213 and the water pump 240 are positioned as far apart as possible. Therefore, during maintenance of the expansion tank 213 and the water pump 240, maintenance personnel have greater operating space and less mutual obstruction between the expansion tank 213 and the water pump 240.

[0043] It is understood that other embodiments of the present application are not limited to the expansion tank 213 and the water pump 240 being arranged spaced apart along the length direction of the heating device 200. For example, the expansion tank 213 and the water pump 240 are arranged along the thickness direction of the heating device 200.

[0044] In one embodiment, please refer to Figure 1 The water pump 240 and three-way valve 250 are arranged parallel to the thickness of the outdoor unit. For example, the thickness of the heating device 200 is arranged parallel to the thickness of the outdoor unit. This arrangement of the water pump 240 and three-way valve 250 fully utilizes the installation space in the thickness direction of the heating device 200, thereby minimizing the length of the heating device 200.

[0045] In one embodiment, please refer to Figure 3 and Figure 4The three-way valve 250 is connected with the water inlet pipe assembly 210, the spraying assembly 230 and the water outlet pipe assembly 220 respectively. The water inlet pipe assembly 210 has a first connecting pipe 210a for communicating with the three-way valve 250. The first connecting pipe 210a has a first pipe diameter. The spraying assembly 230 includes a first pipe 231 for communicating with the three-way valve 250. The first pipe 231 has a second pipe diameter. The water outlet pipe assembly 220 has a second connecting pipe 220a for communicating with the three-way valve 250. The second connecting pipe 220a has a third pipe diameter. The second pipe diameter is less than or equal to the first pipe diameter and the third pipe diameter. Exemplarily, the water inlet pipe 211 communicates with the first connecting pipe 210a, and the water outlet pipe 221 communicates with the second connecting pipe 220a. The water inlet pipe 211 has the first pipe diameter, and the water outlet pipe 221 has the third pipe diameter. Exemplarily, the first pipe diameter and the third pipe diameter range from 25 mm to 40 mm, and the second pipe diameter ranges from 15 mm to 40 mm. At least part of the first pipe 231 extends in the up-down direction. The third pipe diameter is smaller, so that the water pressure in the third pipe diameter is higher. The water flow in the spraying assembly 230 can flow more smoothly from a lower position to a higher position. The higher water pressure in the spraying assembly 230 can also increase the speed of water flow sprayed from the nozzle, and the atomization effect of the spraying assembly 230 is better.

[0046] In an embodiment, referring to Figure 8 The spraying assembly 230 includes the first pipe 231 and a plurality of second pipes 232. The first pipe 231 communicates with the water inlet pipe assembly 210 and the second pipes 232 respectively. The second pipes 232 communicate with the first pipe 231. The step of controlling the spraying assembly 230 to the first state includes: Step S3000: When the second condition is met, increasing the number of the second pipes 232 communicating with the first pipe 231; and / or, Step S3001: When the second condition is met, increasing the power of the water pump of the water inlet pipe assembly.

[0047] In the scheme of the embodiment, the number of the second pipes 232 communicating with the first pipe 231 or the power of the water pump 240 can be increased to increase the cooling effect of the spraying assembly 230. The larger power of the water pump 240 can increase the volume of the spraying liquid of the spraying assembly 230 per unit time, and the plurality of second pipes 232 can increase the spraying area of the spraying assembly 230 to a certain extent, so that a larger area of the refrigeration device 100 can be in contact with the liquid.

[0048] Exemplarily, in step S3000, when the second condition is met, all the second pipes 232 communicate with the first pipe 231.

[0049] In an embodiment, referring to Figure 3 and Figure 4The spray assembly 230 includes a first pipe 231 and a second pipe 232 connected to the first pipe 231. The first pipe 231 is used to connect to the water inlet pipe assembly 210. There are multiple second pipes 232, and the multiple second pipes 232 are arranged at intervals along the height direction of the outdoor unit. The second pipes 232 are connected to nozzles. For example, the height directions of the refrigeration device 100 and the heating device 200 are both parallel to the height direction of the outdoor unit, and the height direction of the outdoor unit is parallel to the up-down direction. The extension direction of the second pipe 232 is parallel to the length direction of the outdoor unit. The length directions of the refrigeration device 100 and the heating device 200 are both parallel to the length direction of the outdoor unit. The length direction of the outdoor unit is arranged orthogonally to the height direction of the outdoor unit. The length direction of the outdoor unit is as shown in FIG. Figure 3 In the direction indicated by the arrow R3, the height direction of the outdoor unit is as follows Figure 3 The second pipes 232 can increase the spraying volume of the spray assembly 230 per unit time to a certain extent, thereby increasing the cooling capacity of the spray assembly 230 and allowing the outside air temperature of the refrigeration device 100 to drop more quickly.

[0050] For example, there are multiple nozzles, the number of nozzles being greater than the number of second pipes 232, and at least one second pipe 232 having multiple nozzles. The number of nozzles can, to a certain extent, affect the degree of dispersion of the liquid sprayed by the spray assembly 230. Having multiple nozzles in at least one second pipe 232 can increase the dispersion of the spray from the spray assembly 230, allowing the refrigeration device 100 to be as completely exposed to the liquid sprayed by the spray assembly 230 as possible, thereby achieving a better cooling effect.

[0051] In one embodiment, please refer to Figure 8 The spray assembly 230 includes a first pipe 231 and a second pipe 232. The first pipe 231 is connected to the water inlet pipe assembly 210 and the second pipe 232 respectively. There are multiple second pipes 232. The steps of controlling the spray assembly 230 to the second state include: Step S3010: when the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, reducing the number of second pipes connected to the first pipe; and / or, Step S3011: When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, the power of the water pump of the water inlet pipe assembly is reduced.

[0052] In the solution of the embodiment of the present application, when the outside air temperature of the outdoor unit does not reach the second preset temperature, the refrigeration device 100 can be cooled by the second state with weaker cooling ability. It can reduce the waste of water and electricity resources by reducing the number of connections between the second pipe 232 and the first pipe 231 or reducing the power of the water pump 240 of the water inlet pipe assembly 210.

[0053] In one embodiment, the plurality of second pipes 232 are arranged at intervals along the height direction of the external unit, and the step of reducing the number of second pipes 232 connected to the first pipe 231 includes: Step S3012: Close at least one second pipe located at the bottom, and control the second pipe located at the top to be connected to the first pipe. It is understandable that during the process of the spray assembly 230 cooling the refrigeration device 100, the spray assembly 230 in the outdoor unit can be in the first state or the second state at the beginning of the cooling process, and the spray assembly 230 can also switch from the first state to the second state after being in the first state for a certain period of time. When the spray assembly 230 is in the second state, the second pipe 232 located at the top is connected to the first pipe 231, and the liquid sprayed by the spray assembly 230 can move downward under the influence of its own gravity, so that the liquid sprayed by the spray assembly 230 can act on the refrigeration device 100 as much as possible, and can increase the contact area between the refrigeration device 100 and the liquid.

[0054] In one embodiment, the diameter of the second pipe 232 is smaller than that of the first pipe 231. For example, the diameter of the second pipe 232 ranges from 15 mm to 32 mm. The smaller diameter of the second pipe 232 compared to the first pipe 231 can increase the water pressure within the second pipe 232, thereby further increasing the water pressure at the nozzle, improving the nozzle's atomization effect and the liquid's spray distance.

[0055] In one embodiment, the second conduit 232 has a first connecting section and a second connecting section. The first connecting section communicates with the second connecting pipe and the first conduit 231, respectively, and the nozzle communicates with the second connecting section. The diameter of the second connecting section is smaller than that of the first connecting section, and both the first and second connecting sections are smaller than the diameter of the first conduit 231. For example, the diameter of the first connecting section is 20 mm, and the diameter of the second connecting section is 15 mm. During the process of flowing from the first conduit 231 to the nozzle, the diameter of the conduit decreases twice, thereby reducing the increase in resistance caused by the large change in diameter.

[0056] In one embodiment, please refer to Figure 9 The preset parameter is the non-operating time of the refrigeration device 100. The first condition is that the non-operating time is greater than or equal to the first preset time. For example, the first preset time ranges from 500 hours to 840 hours. It is understood that the first preset time can be obtained by continuously monitoring the operating status of the refrigeration device 100 to obtain the non-operating time of the refrigeration device 100. When the first condition is met, the steps of controlling the water inlet pipe assembly 210 to communicate with the spray assembly 230 so that the spray assembly 230 can supply liquid to the refrigeration device 100 include: Step S31: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly, so that the spray assembly cleans the refrigeration device.

[0057] In one embodiment, please refer to Figure 9 After controlling the water inlet pipe assembly 210 to communicate with the spray assembly 230 so that the spray assembly 230 cleans the refrigeration device 100, the control method further includes: Step S32: When the cleaning time reaches a second preset time, the spray assembly stops cleaning the refrigeration device.

[0058] For example, the second preset time period ranges from 5 minutes to 30 minutes. When the spraying time of the spray component 230 reaches the second preset time period, the spraying is stopped, so that the spray component 230 can be cleaned more fully and the waste of water resources can be reduced.

[0059] In one embodiment, the spray assembly 230 further includes a third pipe 233 capable of communicating with the first pipe 231. The third pipe 233 has a nozzle. When the refrigeration device 100 is not in operation for a period greater than or equal to a first preset time, the third pipe 233 communicates with the first pipe 231 to allow water to flow from the first pipe 231 to the third pipe 233. The liquid can then pass through the nozzle corresponding to the third pipe 233 to clean the refrigeration device 100. Exemplarily, the third pipe 233 is located above the second pipe 232.

[0060] In one embodiment, please refer to Figure 3 and Figure 4 , the refrigeration device 100 has an air inlet side 100a and an air outlet side. Exemplarily, the air inlet side 100a and the air outlet side are arranged along the thickness direction of the outdoor unit, the air outlet side is located on the front side of the outdoor unit, and the air inlet side 100a is located on the back side of the outdoor unit. External air can flow through the interior of the refrigeration device 100 through the air inlet side 100a and then flow to the outside from the air outlet side. The nozzle is located on the side of the refrigeration device 100 facing the air inlet side 100a, and the spraying direction of the nozzle is arranged along the direction from the air outlet side to the air inlet side 100a. Exemplarily, the arrangement direction of the nozzle and the second pipe 232 is arranged parallel to the thickness direction of the outdoor unit, the nozzle is located on the side of the second pipe 232 away from the refrigeration device 100, the thickness direction of the outdoor unit is arranged parallel to the thickness direction of the heating device 200, and the thickness direction of the heating device 200 is as shown in FIG. Figure 1The nozzles are located on the side of the refrigeration device 100 facing the air inlet side 100a, the number of the nozzles is multiple, at least part of the nozzles are first nozzles 230a, the spraying direction of the first nozzles 230a is arranged along the side away from the air inlet side 100a, and the first nozzles 230a can cool the refrigeration device 100 when the external air temperature is greater than or equal to the first preset temperature. Avoiding direct spraying of the first nozzles 230a on the refrigeration device 100 can reduce the corrosion degree of the liquid on the refrigeration device 100 in the case of poor water quality.

[0061] In an embodiment, referring to Figure 3 and Figure 4 , the number of the nozzles is multiple, at least part of the nozzles are first nozzles 230a, at least part of the nozzles are second nozzles 230b, the first nozzles 230a are used to cool the refrigeration device 100, the second nozzles 230b are used to clean the refrigeration device 100, and the second nozzles 230b are located above the first nozzles 230a. The height of the second nozzles 230b is as high as possible to increase the cleaning effect of the spraying assembly 230 on the refrigeration device 100, so as to remove the dust attached to the refrigeration device 100 as much as possible and reduce the influence of the dust on the working capacity of the refrigeration device 100.

[0062] In an embodiment, the refrigeration device 100 has an air inlet side 100a and an air outlet side, external air can flow through the inside of the refrigeration device 100 through the air inlet side 100a and then flow to the outside from the air outlet side, the nozzles are located on the side of the refrigeration device 100 facing the air inlet side 100a, the number of the nozzles is multiple, at least part of the nozzles are second nozzles 230b, the spraying direction of the second nozzles 230b is arranged along the side facing the air inlet side 100a, and the second nozzles 230b can clean the refrigeration device 100 when the non-operation time is greater than or equal to the first preset time. The spraying direction of the second nozzles 230b can directly face the refrigeration device 100 to spray the refrigeration device 100, so that the cleaning effect of the second nozzles 230b is better. In the case that the outdoor unit is not operated for a long time, dust will be attached to the surface of the refrigeration device 100 to a certain extent, and the liquid sprayed by the second nozzles 230b directly sprays the refrigeration device 100, so that the dust can be completely removed from the refrigeration device 100.

[0063] Exemplarily, the outdoor unit further includes a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program is configured to implement the steps of the control method of the outdoor unit of any one of the above embodiments.

[0064] In an embodiment, the application further provides a storage medium, the storage medium is a computer readable storage medium, and the storage medium stores a computer program, the computer program is executed by a processor to implement the steps of the control method of the outdoor unit of any one of the above embodiments.

[0065] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of protection.

Claims

1. A control method for an outdoor unit, applied to a HVAC system, characterized in that: The outdoor unit includes a refrigeration device and a heating device, the heating device includes a water inlet pipe assembly, a water outlet pipe assembly and a spray assembly, the water outlet pipe assembly and the spray assembly are both capable of communicating with the water inlet pipe assembly, and the control method includes: Obtaining preset parameters of the outdoor unit; Determining whether the outdoor unit meets a first condition by using the preset parameters; When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device.

2. The control method according to claim 1, characterized in that: The preset parameter is the outside air temperature of the outdoor unit, the first condition is that the outside air temperature is greater than or equal to a first preset temperature, and when the first condition is met, the steps of controlling the water inlet pipe assembly to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device include: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly cools the refrigeration device.

3. The control method according to claim 2, characterized in that: The step of controlling the water inlet pipe assembly to communicate with the spray assembly so that the spray assembly cools the refrigeration device comprises: When the second condition is met, controlling the spray assembly to the first state; When the outside air temperature is lower than a second preset temperature and higher than the first preset temperature, controlling the spray assembly to a second state; The cooling capacity of the first state is greater than the cooling capacity of the second state, and the second condition is that the outside air temperature of the outdoor unit is greater than or equal to a second preset temperature, and the second preset temperature is greater than the first preset temperature.

4. The control method according to claim 3, characterized in that: The spray assembly includes a first pipe and a second pipe, the first pipe is connected to the water inlet pipe assembly and the second pipe respectively, and the number of the second pipes is multiple. The step of controlling the spray assembly to the first state includes: When the second condition is met, increasing the number of connections between the second pipe and the first pipe; and / or, When the second condition is met, the power of the water pump of the water inlet pipe assembly is increased.

5. The control method according to claim 3, characterized in that: The spray assembly includes a first pipe and a second pipe, the first pipe is connected to the water inlet pipe assembly and the second pipe respectively, and the number of the second pipes is multiple. The step of controlling the spray assembly to the second state includes: When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, reducing the number of the second pipes connected to the first pipe; and / or, When the outside air temperature is lower than the second preset temperature and higher than the first preset temperature, the power of the water pump of the water inlet pipe assembly is reduced.

6. The control method according to claim 5, characterized in that: The plurality of second pipes are arranged at intervals along the height direction of the external unit, and the step of reducing the number of the second pipes connected to the first pipes includes: At least one of the second pipes located at the bottom is closed, and the second pipe located at the top is controlled to communicate with the first pipe.

7. The control method according to claim 1, characterized in that: The preset parameter is the non-operating time of the refrigeration device, the first condition is that the non-operating time is greater than or equal to the first preset time, and when the first condition is met, the step of controlling the water inlet pipe assembly to be connected to the spray assembly so that the spray assembly can provide liquid to the refrigeration device includes: When the first condition is met, the water inlet pipe assembly is controlled to be connected to the spray assembly so that the spray assembly cleans the refrigeration device.

8. The control method according to claim 7, characterized in that: The spray assembly includes a first pipe, a second pipe and a third pipe. The first pipe is connected to the water inlet pipe assembly and the second pipe respectively. The second pipe and the third pipe can both be connected to the first pipe. The second pipe is used to cool the refrigeration device. The third pipe is used to clean the refrigeration device. The third pipe is located above the second pipe.

9. An external unit, characterized in that: include: Refrigeration equipment; A heating device, comprising a water inlet pipe assembly, a water outlet pipe assembly, and a spray assembly, wherein the water inlet pipe assembly is capable of communicating with the spray assembly and the water outlet pipe assembly, respectively; the water inlet pipe assembly is configured to communicate with a water source; the spray assembly comprises a nozzle, and when the water inlet pipe assembly is in communication with the spray assembly, the spray assembly is capable of providing liquid to the cooling device; A control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the method for controlling an external unit according to any one of claims 1 to 8.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the external unit control method according to any one of claims 1 to 8 are implemented.

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