Air conditioner and control method of air conditioner

Abstract

The embodiment of the invention provides an air conditioner and a control method of the air conditioner. The air conditioner comprises a water pan assembly, a heat exchanger, an electric heating belt, a sensor and a controller. The water pan assembly is arranged between the heat exchanger and the electric heating belt, water and electricity separation is achieved, and the fault rate of the electric heating belt is reduced; the water pan assembly is used for collecting condensate water generated by the heat exchanger after the air conditioner is started, the structure is simple, and batch production is facilitated; the electric heating belt is used for electrically heating the condensate water collected by the water pan assembly to prevent unsmooth drainage of a flow channel in the water pan assembly after the condensate water is defrosted; the sensor is used for collecting environment parameters of the air conditioner, and the reliability of environment detection of the air conditioner is improved; and the controller is used for controlling the electric heating belt to electrically heat the condensate water collected by the water receiving disc assembly according to the environment parameters of the air conditioner under the condition that the working mode of the air conditioner is the heating mode, so that the electric heating belt is accurately controlled, the performance of the air conditioner is improved, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly to an air conditioner and a control method for an air conditioner. Background Art

[0002] An air conditioner has dual functions of refrigeration and heating. When the air conditioner operates, a large amount of condensed water will be generated by the heat exchanger. Currently, most air conditioners on the market generally use a water receiving tray to collect the condensed water, and the condensed water after defrosting will cause poor drainage in the flow channel of the water receiving tray. Seriously, the condensed water will freeze at low temperatures, forming ice accumulation. This situation will not only reduce the equipment performance, but may also cause equipment damage and increase the maintenance cost. Summary of the Invention

[0003] To solve the above problems, embodiments of the present invention disclose an air conditioner and a control method for an air conditioner.

[0004] In a first aspect, an embodiment of the present invention provides an air conditioner, which includes: a water receiving tray assembly, a heat exchanger, an electric heating tape, a sensor, and a controller; the water receiving tray assembly is disposed between the heat exchanger and the electric heating tape;

[0005] The water receiving tray assembly is configured to collect the condensed water generated by the heat exchanger after the air conditioner is turned on;

[0006] The electric heating tape is configured to electrically heat the condensed water collected by the water receiving tray assembly;

[0007] The sensor is configured to collect the environmental parameters of the air conditioner;

[0008] The controller is configured to, when the working mode of the air conditioner is the heating mode, control the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner.

[0009] Optionally, the sensor includes a temperature sensor, and the environmental parameters include the ambient temperature;

[0010] The temperature sensor is configured to collect the ambient temperature of the air conditioner;

[0011] The controller is configured to, when the ambient temperature is less than or equal to a first preset temperature, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly; when the ambient temperature is greater than a second preset temperature, control the electric heating tape to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly; the second preset temperature is greater than the first preset temperature.

[0012] Optionally, the sensor further includes an ice detection sensor, and the environmental parameters further include the ice amount;

[0013] The icing detection sensor is used to collect the amount of ice formed on the air conditioner.

[0014] The controller is used to determine whether the amount of ice formed on the air conditioner reaches a preset amount of ice; when the amount of ice formed on the air conditioner reaches the preset amount of ice, the controller controls the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly.

[0015] Optionally, the controller is used to control the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly when the operating duration of the air conditioner reaches a first preset duration and the duration for which the ambient temperature is less than or equal to the first preset temperature reaches a second preset duration.

[0016] Optionally, the controller is further used to control the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly when the air conditioner is turned on and the ambient temperature is less than or equal to the first preset temperature.

[0017] Optionally, the water receiving tray assembly includes: a boss, a mounting hole, and an annular drainage channel; the annular drainage channel is provided at the junction of a first plane and a second plane, the first plane is the highest surface of the boss, the second plane is the plane where the mounting hole is located, and the first plane is higher than the second plane.

[0018] Optionally, the water receiving tray assembly further includes: a through hole for the drain pipe assembly, a through hole for the circuit, a positioning cross cursor, a heat exchanger baffle, a heat exchanger baffle bracket, and an electric heating belt fixing plate; the through hole for the drain pipe assembly and the through hole for the circuit are provided on a third plane, the third plane is higher than the second plane and lower than the first plane; the positioning cross cursor is provided on the second plane;

[0019] The positioning cross cursor is used to position the heat exchanger baffle bracket.

[0020] The heat exchanger baffle is used to position the heat exchanger.

[0021] The heat exchanger baffle bracket is used to limit the heat exchanger.

[0022] The electric heating belt fixing plate is used to fix the electric heating belt.

[0023] In a second aspect, an embodiment of the present invention provides a control method for an air conditioner, the air conditioner including a water receiving tray assembly, a heat exchanger, an electric heating belt, and a sensor, the water receiving tray assembly being disposed between the heat exchanger and the electric heating belt; the method includes:

[0024] Obtaining the ambient parameters of the air conditioner collected by the sensor;

[0025] When the operating mode of the air conditioner is the heating mode, according to the environmental parameters of the air conditioner, control the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly.

[0026] Optionally, the sensor includes a temperature sensor, and the environmental parameter includes the ambient temperature; the step of controlling the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner includes:

[0027] When the ambient temperature is less than or equal to a first preset temperature, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly;

[0028] When the ambient temperature is greater than a second preset temperature, control the electric heating belt to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly; the second preset temperature is greater than the first preset temperature.

[0029] Optionally, the sensor further includes an icing detection sensor, and the environmental parameter further includes the amount of icing; the step of controlling the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner includes:

[0030] Judge whether the amount of icing of the air conditioner reaches a preset amount of icing;

[0031] When the amount of icing of the air conditioner reaches the preset amount of icing, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

[0032] Optionally, the step of, when the ambient temperature is less than or equal to the first preset temperature, controlling the electric heating belt to turn on and electrically heating the condensed water collected by the water receiving tray assembly includes:

[0033] When the startup duration of the air conditioner reaches a first preset duration and the duration for which the ambient temperature is less than or equal to the first preset temperature reaches a second preset duration, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

[0034] Optionally, the method further includes:

[0035] When the air conditioner is started, if the ambient temperature is less than or equal to the first preset temperature, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

[0036] Optionally, the water receiving tray assembly includes: a boss, a mounting hole, and an annular drainage channel; the annular drainage channel is provided at the junction of a first plane and a second plane, the first plane is the highest surface of the boss, the second plane is the plane where the mounting hole is located, and the first plane is higher than the second plane.

[0037] Optionally, the water receiving tray assembly further includes: a through hole for the drain pipe assembly, a through hole for the circuit, a positioning cross cursor, a heat exchanger baffle, a heat exchanger baffle bracket, and an electric heating tape fixing plate; the through hole for the drain pipe assembly and the through hole for the circuit are provided on a third plane, the third plane is higher than the second plane and lower than the first plane; the positioning cross cursor is provided on the second plane;

[0038] The positioning cross cursor is used to position the heat exchanger baffle bracket;

[0039] The heat exchanger baffle is used to position the heat exchanger;

[0040] The heat exchanger baffle bracket is used to limit the heat exchanger;

[0041] The electric heating tape fixing plate is used to fix the electric heating tape.

[0042] The embodiments of the present invention have the following advantages:

[0043] The embodiments of the present invention provide an air conditioner, which includes: a water receiving tray assembly, a heat exchanger, an electric heating tape, a sensor, and a controller; the water receiving tray assembly is arranged between the heat exchanger and the electric heating tape, realizing the separation of water and electricity and reducing the failure rate of the electric heating tape; the water receiving tray assembly is used to collect the condensed water generated by the heat exchanger after the air conditioner is turned on, and the structure of the water receiving tray assembly is simple, which is conducive to mass production; the electric heating tape is used to electrically heat the condensed water collected by the water receiving tray assembly to prevent the drainage of the flow channel in the water receiving tray assembly from being blocked after the condensed water defrosts; the sensor is used to collect the environmental parameters of the air conditioner, improving the reliability of the environmental detection of the air conditioner; the controller is used to control the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner when the working mode of the air conditioner is the heating mode, so as to accurately control the electric heating tape, improve the performance of the air conditioner, and reduce the energy consumption of the air conditioner. Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0045] Figure 1 It is a structural block diagram of an air conditioner according to an embodiment of the present invention;

[0046] Figure 2 It is a structural block diagram of a water receiving tray assembly according to an embodiment of the present invention;

[0047] Figure 3 is a structural block diagram of another water receiving tray assembly according to an embodiment of the present invention;

[0048] Figure 4 It is a structural block diagram of an electric heating tape fixing plate according to an embodiment of the present invention;

[0049] Figure 5 It is a structural block diagram of a heat exchanger baffle support according to an embodiment of the present invention;

[0050] Figure 6 It is a structural block diagram of another air conditioner according to an embodiment of the present invention;

[0051] Figure 7 It is a step flow chart of a control method of an air conditioner according to an embodiment of the present invention;

[0052] Figure 8 It is a logic diagram of a control method of an air conditioner according to an embodiment of the present invention.

[0053] Explanation of reference numerals:

[0054] Water receiving tray assembly 11, heat exchanger 12, electric heating tape 13, boss 21, mounting hole 22, drain pipe assembly through hole 23, wiring through hole 24, positioning cross cursor 25, heat exchanger baffle 26, heat exchanger baffle support 27, electric heating tape fixing plate 31. Detailed implementation manners

[0055] In order to solve the problem of poor drainage in the water flow channel in the water receiving tray caused by condensation defrosting, the traditional solution is to place an electric heating tape in the water receiving tray of the air conditioner or under the heat exchanger to assist in heating the condensed water in the water receiving tray. However, this solution has a risk of electric leakage, and using an electric heating tape with waterproof characteristics increases the economic cost. Moreover, the traditional water receiving tray structure of the air conditioner is complex and not conducive to production and manufacturing, and the control method of the traditional electric heating tape of the air conditioner is not energy-saving and stable and reliable enough.

[0056] Therefore, the present invention proposes an air conditioner and a control method of an air conditioner, aiming to improve the performance of the air conditioner and reduce the energy consumption of the air conditioner. To achieve this goal, the embodiments of the present invention separate water and electricity by arranging the water receiving tray assembly between the heat exchanger and the electric heating tape, reduce the failure rate of the electric heating tape, and precisely control the electric heating tape according to the environmental parameters of the air conditioner, so as to improve the performance of the air conditioner and reduce the energy consumption of the air conditioner while electrically heating the condensed water collected by the water receiving tray assembly.

[0057] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] Refer to Figure 1 , which shows a structural block diagram of an air conditioner according to an embodiment of the present invention. The air conditioner specifically includes: a water receiving tray assembly 11, a heat exchanger 12, an electric heating belt 13, a sensor (not shown in the figure), and a controller (not shown in the figure); the water receiving tray assembly 11 is disposed between the heat exchanger 12 and the electric heating belt 13;

[0059] The water receiving tray assembly 11 is used to collect the condensed water generated by the heat exchanger 12 after the air conditioner is turned on;

[0060] The electric heating belt 13 is used to electrically heat the condensed water collected by the water receiving tray assembly 11;

[0061] The sensor is used to collect the environmental parameters of the air conditioner;

[0062] The controller is used to control the electric heating belt 13 to electrically heat the condensed water collected by the water receiving tray assembly 11 according to the environmental parameters of the air conditioner when the working mode of the air conditioner is the heating mode.

[0063] In the embodiment of the present invention, the water receiving tray assembly is located between the heat exchanger and the electric heating belt, and can collect the condensed water generated by the heat exchanger during heat exchange in the heating mode. The electric heating belt is closely attached to the water receiving tray assembly and is embedded at the bottom of the water receiving tray assembly, and can heat the condensed water in the water receiving tray through electric energy to prevent freezing at low temperatures or assist in defrosting. The sensor can real-time monitor the environmental parameters of the air conditioner and provide data for the controller. The controller can judge whether to start the electric heating belt according to the data of the sensor and the operating mode of the air conditioner.

[0064] Specifically, the sensor collects the environmental parameters of the air conditioner to enable the controller to judge the icing risk to prevent the condensed water from freezing and blocking the drainage or damaging the components; when the controller judges that there is an icing risk inside the air conditioner, the electric heating belt can be started to melt the ice in the water receiving tray or prevent icing. Among them, the heating duration and heating power of the electric heating belt can be dynamically adjusted according to the environmental parameters.

[0065] In the air conditioner according to the embodiment of the present invention, the heat exchanger may frost during heating. Heating the water receiving tray can assist the defrosting process, and the drainage pump can be automatically started after heating to accelerate the discharge of the melted water. Moreover, in the embodiment of the present invention, the electric heating is only activated when the air conditioner is in the heating mode and the environmental parameters reach the threshold, thereby avoiding ineffective energy consumption.

[0066] The air conditioner according to an embodiment of the present invention includes: a water receiving tray assembly, a heat exchanger, an electric heating tape, a sensor, and a controller; the water receiving tray assembly is disposed between the heat exchanger and the electric heating tape, realizing separation of water and electricity and reducing the failure rate of the electric heating tape; the water receiving tray assembly is used to collect the condensed water generated by the heat exchanger after the air conditioner is turned on, and the structure of the water receiving tray assembly is simple, which is conducive to mass production; the electric heating tape is used to electrically heat the condensed water collected by the water receiving tray assembly to prevent the condensed water from causing poor drainage in the flow channel of the water receiving tray assembly after defrosting; the sensor is used to collect the environmental parameters of the air conditioner, improving the reliability of the environmental detection of the air conditioner; the controller is used to, when the working mode of the air conditioner is the heating mode, control the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner, so that the electric heating tape can be accurately controlled, improving the performance of the air conditioner and reducing the energy consumption of the air conditioner.

[0067] Referring to Figure 2 , a structural block diagram of the water receiving tray assembly according to an embodiment of the present invention is shown. The water receiving tray assembly 11 includes: a boss 21, a mounting hole 22, and an annular drainage channel; the annular drainage channel is disposed at the junction of a first plane and a second plane, the first plane is the highest surface of the boss 21, the second plane is the plane where the mounting hole 22 is located, and the first plane is higher than the second plane.

[0068] In an embodiment of the present invention, the highest point of the boss is the first plane, the mounting hole is located in the second plane, the second plane is lower than the first plane, and the annular drainage channel is located at the junction of the first plane and the second plane. The annular drainage channel can form a water guiding channel by using the height difference to guide the condensed water to flow from the periphery of the boss to the mounting hole, realizing gravity drainage through the natural height difference without additional power. Moreover, the annular design ensures that the condensed water can converge to the mounting hole regardless of the inclination angle of the air conditioner. The mounting hole can be connected to a drain pipe to discharge the condensed water to the outside of the air conditioner or the drainage system.

[0069] Due to the height difference between the first plane and the second plane, a hollow sandwich layer is formed between the boss and the bottom of the water receiving tray. The internal drain pipe, wire, etc. of the air conditioner can be routed in this space, avoiding the pipeline from being exposed below the heat exchanger, reducing the interference of condensed water dripping, improving the aesthetics, and reducing the risk of external collision damage.

[0070] The water receiving tray assembly according to an embodiment of the present invention combines the annular channel with the height difference to ensure that there is no retention of condensed water; the hollow structure below the boss provides a concealed space for the pipeline layout; combined with the electric heating tape, it can prevent the water flow in the annular drainage channel from freezing and improve the drainage speed; the mounting hole is located in the low plane, which is convenient for connecting drain pipes of different specifications. The structure of the water receiving tray assembly according to an embodiment of the present invention realizes the improvement of drainage efficiency, space utilization and anti-freezing function through the ingenious plane height difference and annular channel.

[0071] As shown Figure 2 in the figure, the water receiving tray assembly 11 further includes: a drain pipe assembly through hole 23, a line through hole 24, a positioning cross cursor 25, a heat exchanger baffle 26, a heat exchanger baffle bracket 27, and an electric heating tape fixing plate (not shown in the figure); the drain pipe assembly through hole 23 and the line through hole 24 are provided on a third plane, the third plane is higher than the second plane, and the third plane is lower than the first plane; the positioning cross cursor 25 is provided on the second plane;

[0072] The positioning cross cursor 25 is used to position the heat exchanger baffle bracket 27;

[0073] The heat exchanger baffle 26 is used to position the heat exchanger 12;

[0074] The heat exchanger baffle bracket 27 is used to limit the heat exchanger 12;

[0075] The electric heating tape fixing plate is used to fix the electric heating tape 13.

[0076] Referring to FIG. 3, a structural block diagram of another water receiving tray assembly according to an embodiment of the present invention is shown. The electric heating tape fixing plate 31 is disposed below the water receiving tray body corresponding to the annular drainage channel by screw cooperation. Among them, Figure 3A is a schematic diagram of turning the water receiving tray assembly over, Figure 3B is a schematic diagram of the position of the electric heating tape fixing plate.

[0077] Referring Figure 4 , a structural block diagram of the electric heating tape fixing plate according to an embodiment of the present invention is shown. The electric heating tape fixing plate 31 is used to fix the electric heating tape 13 so that the electric heating tape 13 heats the condensed water in the annular drainage channel.

[0078] Referring Figure 5 , a structural block diagram of the heat exchanger baffle bracket according to an embodiment of the present invention is shown. The heat exchanger baffle bracket 27 is positioned by the positioning cross cursor 25, and the heat exchanger baffle bracket 27 is used to limit the heat exchanger 13.

[0079] Referring Figure 6 , a structural block diagram of another air conditioner according to an embodiment of the present invention is shown. The heat exchanger 12 can be a large U-shaped fin heat exchanger, and the sensor can be installed on the fins of the heat exchanger.

[0080] In the embodiments of the present invention, the drain pipe assembly through-hole and the line through-hole are provided on the third plane, which is higher than the second plane and lower than the first plane; the positioning cross cursor is provided on the second plane and is used to position the heat exchanger baffle bracket; the heat exchanger baffle is used to position the heat exchanger; the heat exchanger baffle bracket is used to limit the heat exchanger; the electric heating tape fixing plate is used to fix the electric heating tape. The heat exchanger can be positioned through the heat exchanger baffle and then limited through the heat exchanger baffle bracket, so that it has a definite position above the water receiving tray assembly.

[0081] Among them, the first plane is the highest plane, which is the highest surface of the boss. The third plane is the second highest plane, including the drain pipe assembly through-hole and the line through-hole. The drain pipe assembly through-hole allows the drain pipe to vertically pass through the water receiving tray, and uses the height difference to prevent backflow, and the line through-hole; the line through-hole is the cable channel for the electric heating tape and the sensor, separated from the water pipe to avoid interference. Therefore, the third plane can have concealed pipe laying and wiring to avoid interfering with the drainage channel.

[0082] The second plane is the lowest plane, including the mounting hole and the positioning cross cursor. The positioning cross cursor is a visual alignment mark to ensure the accurate installation position of the heat exchanger baffle bracket; the mounting hole is the drainage outlet.

[0083] The heat exchanger baffle is connected to the baffle bracket and can directly contact the heat exchanger to limit its lateral displacement, for example, to prevent dislocation during vibration. The heat exchanger baffle bracket is positioned through the cross cursor and is used to fix the baffle to form a mechanical limit structure for the heat exchanger. The electric heating tape fixing plate is close to the annular drainage channel and is used to fix the electric heating tape to ensure that it closely adheres to the bottom of the channel for efficient heating.

[0084] The working process of each component is as follows: Calibrate the position of the baffle bracket through the positioning cross cursor, install the heat exchanger baffle, clamp the heat exchanger, and the baffle and the bracket jointly offset the vibration / thermal expansion and contraction displacement of the heat exchanger. The electric heating tape is pressed by the fixing plate against the bottom of the channel, and the controller starts and stops heating according to the sensor data to prevent the channel from freezing. The condensed water drips along the heat exchanger, passes through the annular drainage channel, drains to the mounting hole, and then reaches the external drain pipe. Since the third plane (through-hole) is higher than the second plane, it can prevent the condensed water from overflowing from the through-hole.

[0085] In one embodiment, the sensor includes a temperature sensor, and the environmental parameter includes the ambient temperature;

[0086] The temperature sensor is used to collect the ambient temperature of the air conditioner;

[0087] The controller is configured to control the electric heating tape 13 to turn on when the ambient temperature is less than or equal to a first preset temperature, so as to electrically heat the condensed water collected by the water receiving tray assembly 11; and control the electric heating tape 13 to turn off when the ambient temperature is greater than a second preset temperature, so as to stop electrically heating the condensed water collected by the water receiving tray assembly 11; the second preset temperature is greater than the first preset temperature.

[0088] In an embodiment of the present invention, the temperature sensor can monitor the ambient temperature in real time, and the controller can compare the current ambient temperature with the preset temperature to control the on / off of the electric heating tape. Specifically, when the ambient temperature ≤ the first preset temperature, the electric heating tape is turned on to prevent the condensed water in the water receiving tray from freezing, avoiding drainage blockage or component cracking; when the ambient temperature > the second preset temperature, the electric heating tape is turned off to save energy consumption and avoid unnecessary heating; when the first preset temperature < the ambient temperature ≤ the second preset temperature, the current state of the electric heating tape is maintained to prevent frequent switching of the electric heating tape caused by temperature fluctuations and extend the device life.

[0089] Exemplarily, the first preset temperature can be 2°C (the critical point of icing risk), and the second preset temperature can be 5°C (ensuring a completely ice-free state). Those skilled in the art can set the first preset temperature and the second preset temperature to other appropriate values according to the idea of the present invention, and the present invention does not limit this.

[0090] In one embodiment, the controller is configured to control the electric heating tape 13 to turn on when the startup duration of the air conditioner reaches a first preset duration and the duration for which the ambient temperature is less than or equal to the first preset temperature reaches a second preset duration, so as to electrically heat the condensed water collected by the water receiving tray assembly 11.

[0091] In an embodiment of the present invention, the controller introduces a dual judgment of the startup duration and the duration of low temperature persistence. When the startup duration of the air conditioner ≥ the first preset duration and the duration for which the ambient temperature ≤ the first preset temperature ≥ the second preset duration, it avoids mis-triggering caused by short-term operation or temperature fluctuations, ensures the necessity of heating, and at the same time immediately stops the heating of the electric heating tape when the temperature rises or the air conditioner stops, which can save energy and prevent overheating.

[0092] Exemplarily, the first preset duration, which is used to filter the unstable stage when the air conditioner is just started, can be 1 minute; the second preset duration, which is used to avoid mis-triggering heating due to instantaneous low temperature and confirm the continuous existence of the low temperature environment, can be 5 seconds. Those skilled in the art can set the first preset duration and the second preset duration to other appropriate values according to the idea of the present invention, and the present invention does not limit this.

[0093] In the embodiment of the present invention, instantaneous anomalies are filtered through double durations to ensure that heating only occurs in necessary scenarios of long-term low-temperature operation. It can also be used in combination with the original hysteresis interval to further prevent frequent switching, improving control reliability through verification in the time dimension, and is applicable to air-conditioning systems that are sensitive to energy consumption or have complex environments.

[0094] In one embodiment, the controller is further configured to, when the air conditioner is turned on, if the ambient temperature is less than or equal to the first preset temperature, control the electric heating tape 13 to turn on to electrically heat the condensed water collected by the water receiving tray assembly 11.

[0095] In the embodiment of the present invention, in order to ensure reliable drainage of the air-conditioning water receiving tray in a low-temperature environment and avoid unnecessary heating energy consumption, the controller can adopt a multi-condition hierarchical judgment strategy. When the air conditioner is just started, if the ambient temperature ≤ the first preset temperature, the electric heating tape is immediately turned on to quickly respond to extreme low temperatures and prevent the water receiving tray from freezing during startup. Moreover, in order to filter out the unstable state at the initial stage of air-conditioner startup, the minimum operating duration and the minimum stop duration of the electric heating tape can be 5 minutes.

[0096] In one embodiment, the sensor further includes an icing detection sensor, and the environmental parameter further includes the amount of ice.

[0097] The icing detection sensor is used to collect the amount of ice of the air conditioner.

[0098] The controller is configured to judge whether the amount of ice of the air conditioner reaches a preset amount of ice; when the amount of ice of the air conditioner reaches the preset amount of ice, control the electric heating tape 13 to turn on to electrically heat the condensed water collected by the water receiving tray assembly 11.

[0099] In the embodiment of the present invention, if the temperature sensor is damaged, the controller can also judge whether the amount of ice of the air conditioner reaches the preset amount of ice through the icing detection sensor. When the amount of ice of the air conditioner reaches the preset amount of ice, control the electric heating tape to turn on to electrically heat the condensed water collected by the water receiving tray assembly, and realize reliable control of the electric heating tape through the combination of the temperature sensor and the icing detection sensor.

[0100] Among them, the principle by which the icing detection sensor determines whether the icing amount reaches the preset value is usually based on changes in various physical or electromagnetic characteristics, and the specific method varies depending on the type of sensor. Exemplarily, it can be achieved by measuring the mass or thickness of the ice layer accumulation and comparing it with a preset threshold; the dielectric constants of ice and air / water are different, and icing will change the capacitance value between the electrodes. An electric field is formed between the sensor electrodes, and the capacitance value increases during icing. It is converted into an electrical signal through a circuit, and when the preset capacitance value is reached, an alarm is triggered; the heat energy required for icing can also be monitored through a heating element and a temperature sensor; or an infrared or laser sensor is used to detect the surface reflected light intensity or scattering pattern. When icing occurs, the optical signal characteristics change, and the ice layer is quantified through an algorithm, etc.

[0101] In the air conditioner according to the embodiment of the present invention, by arranging the water receiving tray assembly between the heat exchanger and the electric heating belt, the separation of water and electricity is achieved, and the failure rate of the electric heating belt is reduced; the water receiving tray assembly is used to collect the condensed water generated by the heat exchanger after the air conditioner is turned on. The structure of the water receiving tray assembly is simple, which is conducive to mass production; the electric heating belt is used to electrically heat the condensed water collected by the water receiving tray assembly to prevent the drainage of the flow channel in the water receiving tray assembly from being blocked after the condensed water defrosts; the sensor is used to collect the environmental parameters of the air conditioner, improving the reliability of the environmental detection of the air conditioner; the controller is used to control the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner when the working mode of the air conditioner is the heating mode, so as to accurately control the electric heating belt, improve the performance of the air conditioner, and reduce the energy consumption of the air conditioner.

[0102] Referring to Figure 7 , a step flowchart of a control method for an air conditioner according to an embodiment of the present invention is shown. The air conditioner includes a water receiving tray assembly, a heat exchanger, an electric heating belt, and a sensor. The water receiving tray assembly is arranged between the heat exchanger and the electric heating belt; the method may specifically include the following steps:

[0103] Step 401, obtaining the environmental parameters of the air conditioner collected by the sensor;

[0104] Step 401, when the working mode of the air conditioner is the heating mode, controlling the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner.

[0105] In the embodiment of the present invention, the air conditioner may include: a water receiving tray assembly, a heat exchanger, an electric heating belt, a sensor, and a controller; among them, the water receiving tray assembly is arranged between the heat exchanger and the electric heating belt, achieving the separation of water and electricity and reducing the failure rate of the electric heating belt. In the embodiment of the present invention, when the working mode of the air conditioner is the heating mode, the electric heating belt can be controlled to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner, so as to accurately control the electric heating belt, improve the performance of the air conditioner, and reduce the energy consumption of the air conditioner.

[0106] In one embodiment, the sensor includes a temperature sensor, and the environmental parameter includes the ambient temperature; the step of controlling the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameter of the air conditioner may further include the following sub-steps:

[0107] Sub-step S11, when the ambient temperature is less than or equal to the first preset temperature, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly;

[0108] Sub-step S12, when the ambient temperature is greater than the second preset temperature, control the electric heating tape to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly; the second preset temperature is greater than the first preset temperature.

[0109] In the embodiment of the present invention, the temperature sensor can monitor the ambient temperature in real time. The embodiment of the present invention can compare the current ambient temperature with the preset temperature to control the on / off of the electric heating tape. Specifically, when the ambient temperature ≤ the first preset temperature, turn on the electric heating tape to prevent the condensed water in the water receiving tray from freezing and avoid drainage blockage or component cracking; when the ambient temperature > the second preset temperature, turn off the electric heating tape to save energy consumption and avoid unnecessary heating; when the first preset temperature < the ambient temperature ≤ the second preset temperature, maintain the current state of the electric heating tape to prevent frequent switching of the electric heating tape caused by temperature fluctuations and extend the device life.

[0110] Exemplarily, the first preset temperature can be 2°C (the critical point of icing risk), and the second preset temperature can be 5°C (to ensure a completely ice-free state). Those skilled in the art can set the first preset temperature and the second preset temperature to other appropriate values according to the idea of the present invention, and the present invention does not limit this.

[0111] In one embodiment, the step of controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly when the ambient temperature is less than or equal to the first preset temperature includes: when the opening duration of the air conditioner reaches the first preset duration and the duration of the ambient temperature being less than or equal to the first preset temperature reaches the second preset duration, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

[0112] In the embodiment of the present invention, a double judgment of the opening duration and the low-temperature duration is introduced. When the opening duration of the air conditioner ≥ the first preset duration and the duration of the ambient temperature ≤ the first preset temperature ≥ the second preset duration, it can avoid false triggering caused by short-time operation or temperature fluctuations, ensure the necessity of heating, and at the same time immediately stop the heating of the electric heating tape when the temperature rises or the air conditioner stops, which can save energy and prevent overheating.

[0113] Exemplarily, the first preset duration is used to filter the unstable stage when the air conditioner is just started, and it can be 1 minute; the second preset duration is used to avoid false triggering of heating due to instantaneous low temperature and to confirm the continuous existence of a low-temperature environment, and it can be 5 seconds. Those skilled in the art can set the first preset duration and the second preset duration to other appropriate values according to the idea of the present invention, and the present invention does not limit this.

[0114] The embodiment of the present invention filters instantaneous anomalies through double durations, ensuring that heating only occurs in necessary scenarios of long-term low-temperature operation. It can also be used in superposition with the original hysteresis interval to further prevent frequent switching. By verifying through the time dimension, the control reliability is improved, and it is applicable to air conditioner systems that are sensitive to energy consumption or have complex environments.

[0115] In one embodiment, the method further includes: when the air conditioner is turned on, if the ambient temperature is less than or equal to the first preset temperature, controlling the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly.

[0116] In the embodiment of the present invention, in order to ensure reliable drainage of the air conditioner water receiving tray in a low-temperature environment and avoid unnecessary heating energy consumption, a multi-condition hierarchical judgment strategy can be adopted. When the air conditioner is just started, if the ambient temperature ≤ the first preset temperature, the electric heating belt is immediately turned on to quickly respond to extremely low temperatures and prevent the water receiving tray from freezing during startup. Moreover, in order to filter the unstable state in the initial stage of air conditioner startup, the minimum operation duration and the minimum stop duration of the electric heating belt can be 5 minutes.

[0117] In one embodiment, the sensor further includes an ice formation detection sensor, and the environmental parameter further includes the ice formation amount; the step of controlling the electric heating belt to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner may further include the following sub-steps:

[0118] Sub-step S21, judging whether the ice formation amount of the air conditioner reaches the preset ice formation amount;

[0119] Sub-step S22, when the ice formation amount of the air conditioner reaches the preset ice formation amount, controlling the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly.

[0120] In the embodiment of the present invention, if the temperature sensor is damaged, the controller can also judge whether the ice formation amount of the air conditioner reaches the preset ice formation amount through the ice formation detection sensor. When the ice formation amount of the air conditioner reaches the preset ice formation amount, controlling the electric heating belt to turn on to electrically heat the condensed water collected by the water receiving tray assembly. Through the combination of the temperature sensor and the ice formation detection sensor, reliable control of the electric heating belt is achieved.

[0121] Among them, the principle by which the icing detection sensor determines whether the icing amount reaches the preset value is usually based on changes in various physical or electromagnetic characteristics, and the specific method varies depending on the type of sensor. Exemplarily, such sensors can be roughly divided into the following types:

[0122] 1. Resistive sensor: This type of sensor utilizes the characteristic that the resistance of a material changes with temperature. When icing begins on the sensor surface, the presence of ice changes the heat conduction performance of the sensor surface, resulting in a change in resistance. By monitoring the change in resistance, it is possible to indirectly determine whether icing has occurred and the degree of icing.

[0123] 2. Vibration sensor: It utilizes the tiny vibrations or sound signals generated during the formation of the ice layer. The sensor is installed at a location prone to icing, and by monitoring the changes in these vibrations or sound waves, it is possible to determine whether icing has occurred. As the ice layer thickness increases, the vibration characteristics also change, thereby enabling monitoring of the icing amount.

[0124] 3. Optical sensor: It uses a light beam (such as a laser) to irradiate the surface to be measured, and then determines whether icing has occurred based on the intensity or phase change of the reflected light. The ice layer will change the refractive index and reflection characteristics of the light, so by analyzing the change in the reflected light, the icing situation can be determined.

[0125] 4. Ultrasonic sensor: It sends ultrasonic pulses and measures the time delay or intensity change of the echo. Icing will cause the ultrasonic wave propagation speed to slow down or the absorption to increase, thereby affecting the echo characteristics. By comparing the ultrasonic responses in different states, it is possible to determine whether icing exists and its degree.

[0126] In the embodiment of the present invention, by arranging the water receiving tray assembly between the heat exchanger and the electric heating tape, the separation of water and electricity is achieved, reducing the failure rate of the electric heating tape; in the embodiment of the present invention, when the working mode of the air conditioner is the heating mode, according to the environmental parameters of the air conditioner, the electric heating tape can be controlled to electrically heat the condensed water collected by the water receiving tray assembly, thereby enabling precise control of the electric heating tape, improving the performance of the air conditioner, and reducing the energy consumption of the air conditioner. Specifically, by real-time monitoring of the environmental temperature, comparing the current environmental temperature with the preset temperature to control the on / off of the electric heating tape; at the same time, the dual judgments of the opening duration and the low-temperature continuous duration are introduced to avoid false triggering caused by short-term operation or temperature fluctuations; and through the combination of the temperature sensor and the icing detection sensor, reliable control of the electric heating tape is achieved.

[0127] Refer to Figure 8 , which shows a logic diagram of a control method for an air conditioner provided by an embodiment of the present invention. To enable those skilled in the art to better understand the embodiment of the present invention, the following will be described through Figure 8 to illustrate the embodiment of the present invention:

[0128] Step 501, determine whether the operating mode of the air conditioner is the heating mode (including the test mode) or the manual defrosting mode;

[0129] Turn on the electric heating function of the water receiving tray on the air conditioner display panel. Then the air conditioner has the electric heating function of the water receiving tray, and this function is defaulted to off at the factory. Determine whether the air conditioner is in the heating mode (including the test mode) or the manual defrosting mode. If it is in the cooling mode (including the test mode), the electric heating function of the water receiving tray is invalid and the electric heating belt does not work. When operating automatically for winter anti-freezing, the electric heating of the water receiving tray is not turned on either.

[0130] Step 502, when the operating mode of the air conditioner is the heating mode, determine whether the temperature sensor is faulty;

[0131] Step 503, if the temperature sensor is not faulty, obtain the ambient temperature of the air conditioner collected by the temperature sensor;

[0132] Step 504, when the startup duration of the air conditioner reaches the first preset duration and the duration during which the ambient temperature is less than or equal to the first preset temperature T1 reaches the second preset duration, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly;

[0133] Step 505, when the ambient temperature is greater than the first preset temperature T1 and less than the second preset temperature T2, control the electric heating belt to maintain the current state;

[0134] Step 506, when the ambient temperature is greater than or equal to the second preset temperature T2, control the electric heating belt to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly;

[0135] Step 507, if the temperature sensor is faulty, obtain the ice accumulation amount of the air conditioner collected by the ice detection sensor;

[0136] Step 508, determine whether the ice accumulation amount of the air conditioner reaches the preset ice accumulation amount, and when the ice accumulation amount of the air conditioner reaches the preset ice accumulation amount, control the electric heating belt to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

[0137] In the embodiment of the present invention, by arranging the water receiving tray assembly between the heat exchanger and the electric heating belt, the separation of water and electricity is achieved, reducing the failure rate of the electric heating belt. In the embodiment of the present invention, when the working mode of the air conditioner is the heating mode, the electric heating belt can be controlled to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner, so that the electric heating belt can be accurately controlled, improving the performance of the air conditioner and reducing the energy consumption of the air conditioner. Specifically, by monitoring the ambient temperature in real time and comparing the current ambient temperature with the preset temperature, the on / off of the electric heating belt is controlled. At the same time, the dual judgments of the opening duration and the low-temperature continuous duration are introduced to avoid false triggering caused by short-term operation or temperature fluctuations. The reliable control of the electric heating belt is also achieved through the combination of the temperature sensor and the ice detection sensor.

[0138] For the method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the embodiments of the present invention are not limited by the described action sequence, because according to the embodiments of the present invention, some steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily essential for the embodiments of the present invention.

[0139] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0140] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a device, or a computer program product. Therefore, the embodiments of the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the embodiments of the present invention can take the form of a computer program product implemented on one or more machine-readable media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0141] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the method, terminal device (system), and computer program product according to the embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the processes and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal devices generate for realizing in the process Figure 1 each process or multiple processes and / or blocks Figure 1means for the functions specified in one or more boxes.

[0142] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured article including an instruction device that implements the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 one box or more boxes.

[0143] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are performed on the computer or other programmable terminal device to produce a computer-implemented process. Thus, the instructions executed on the computer or other programmable terminal device provide steps for implementing the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 one box or more boxes.

[0144] Although the preferred embodiments of the embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0145] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or terminal device including the said element.

[0146] The above has introduced in detail an air conditioner and a control method for an air conditioner provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An air conditioner, characterized in that, Comprising: A water receiving tray assembly, a heat exchanger, an electric heating tape, a sensor and a controller; the water receiving tray assembly is disposed between the heat exchanger and the electric heating tape; The water receiving tray assembly is configured to collect condensed water generated by the heat exchanger after the air conditioner is turned on; The electric heating tape is configured to electrically heat the condensed water collected by the water receiving tray assembly; The sensor is configured to collect environmental parameters of the air conditioner; The controller is configured to, when the operating mode of the air conditioner is the heating mode, control the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner.

2. The air conditioner according to claim 1, characterized in that, The sensor includes a temperature sensor, and the environmental parameters include environmental temperature; The temperature sensor is configured to collect the environmental temperature of the air conditioner; The controller is configured to, when the environmental temperature is less than or equal to a first preset temperature, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly; When the environmental temperature is greater than a second preset temperature, control the electric heating tape to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly; The second preset temperature is greater than the first preset temperature.

3. The air conditioner according to claim 1, characterized in that, The sensor further includes an icing detection sensor, and the environmental parameters further include the amount of ice; The icing detection sensor is configured to collect the amount of ice of the air conditioner; The controller is configured to determine whether the amount of ice of the air conditioner reaches a preset amount of ice; When the amount of ice of the air conditioner reaches the preset amount of ice, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

4. The air conditioner according to claim 2, wherein The controller is configured to, when the startup duration of the air conditioner reaches a first preset duration and the duration during which the environmental temperature is less than or equal to the first preset temperature reaches a second preset duration, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

5. The air conditioner according to claim 4, wherein The controller is further configured to, when the air conditioner is turned on, if the environmental temperature is less than or equal to the first preset temperature, control the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

6. The air conditioner according to claim 1, characterized in that, The water receiving tray assembly includes: a boss, a mounting hole and an annular drainage channel; the annular drainage channel is disposed at the junction of a first plane and a second plane, the first plane is the highest surface of the boss, the second plane is the plane where the mounting hole is located, and the first plane is higher than the second plane.

7. The air conditioner according to claim 6, characterized in that, The water receiving tray assembly further includes: a through hole for a drain pipe assembly, a through hole for a line, a positioning cross cursor, a heat exchanger baffle, a heat exchanger baffle bracket and an electric heating tape fixing plate; the through hole for the drain pipe assembly and the through hole for the line are disposed on a third plane, the third plane is higher than the second plane and lower than the first plane; the positioning cross cursor is disposed on the second plane; The positioning cross cursor is configured to position the heat exchanger baffle bracket; The heat exchanger baffle is configured to position the heat exchanger; The heat exchanger baffle support is used to limit the heat exchanger; The electric heating tape fixing plate is used to fix the electric heating tape.

8. A control method for an air conditioner, characterized in that, The air conditioner includes a water receiving tray assembly, a heat exchanger, an electric heating tape, and a sensor. The water receiving tray assembly is disposed between the heat exchanger and the electric heating tape. The method includes: Obtaining the environmental parameters of the air conditioner collected by the sensor; When the operating mode of the air conditioner is the heating mode, controlling the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner.

9. The control method of the air conditioner according to claim 8, characterized in that, The sensor includes a temperature sensor, and the environmental parameters include the ambient temperature. The controlling the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner includes: When the ambient temperature is less than or equal to a first preset temperature, controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly; When the ambient temperature is greater than a second preset temperature, controlling the electric heating tape to turn off and stop electrically heating the condensed water collected by the water receiving tray assembly; the second preset temperature is greater than the first preset temperature.

10. The control method of the air conditioner according to claim 8, characterized in that, The sensor further includes an ice formation detection sensor, and the environmental parameters further include the ice formation amount. The controlling the electric heating tape to electrically heat the condensed water collected by the water receiving tray assembly according to the environmental parameters of the air conditioner includes: Judging whether the ice formation amount of the air conditioner reaches a preset ice formation amount; When the ice formation amount of the air conditioner reaches the preset ice formation amount, controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

11. The control method of the air conditioner according to claim 9, wherein, The when the ambient temperature is less than or equal to a first preset temperature, controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly includes: When the startup duration of the air conditioner reaches a first preset duration and the duration for which the ambient temperature is less than or equal to the first preset temperature reaches a second preset duration, controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

12. The control method of the air conditioner according to claim 11, wherein The method further includes: When the air conditioner is turned on, if the ambient temperature is less than or equal to the first preset temperature, controlling the electric heating tape to turn on and electrically heat the condensed water collected by the water receiving tray assembly.

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