Fresh air constant temperature dehumidification method, device, air conditioner and storage medium

Abstract

This invention relates to the field of air conditioning technology, and discloses a method, apparatus, air conditioner, and storage medium for constant temperature dehumidification of fresh air. The method includes: when the air conditioner is in constant temperature dehumidification mode, closing the outdoor air inlet and opening the first indoor air inlet; controlling the operation of the fresh air fan to allow indoor air to enter the fresh air duct from the first indoor air inlet, be heated by the fresh air heater, and then discharged from the first indoor air outlet. Through this invention, the fresh air heater can be fully utilized. In constant temperature dehumidification mode, closing the outdoor air inlet of the fresh air duct creates a closed loop between the fresh air duct and the indoor environment, using the fresh air duct to heat the indoor air, ensuring a constant room temperature. Furthermore, this method eliminates the risk of condensation on the electric heater, enhancing the reliability of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a fresh air constant temperature dehumidification method, device, air conditioner and storage medium. Background Technology

[0002] The heater in existing household fresh air conditioners primarily serves to prevent condensation when the outdoor fresh air temperature is lower than the indoor ambient temperature during winter heating. The existing electric heater in constant temperature dehumidifiers works by heating the low-temperature air containing condensate in dehumidification mode before it enters the room through the main air duct, ensuring a constant room temperature.

[0003] However, since the heating device in the fresh air duct of the fresh air conditioner is only used for anti-condensation purposes, the function of the heater in the new system has not been fully utilized. Furthermore, when the existing constant temperature dehumidification air conditioner is in use, the water-laden cold air passing through the evaporator will stick to the heater, and there is a risk of short circuit when the electrical device comes into contact with water.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to propose a fresh air constant temperature dehumidification method, device, air conditioner, and storage medium, aiming to solve the technical problem in the prior art where the live electrical device in the constant temperature dehumidification air conditioner is at risk of short circuit when it comes into contact with water, which is unsafe.

[0006] To achieve the above objectives, the present invention provides a fresh air constant temperature dehumidification method, which is applied to an air conditioner. The air conditioner includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner. The fresh air fan and the fresh air heater are disposed in the fresh air duct. One end of the fresh air duct is provided with an outdoor air inlet and a first indoor air inlet, and the other end is provided with a first indoor air outlet.

[0007] The fresh air constant temperature dehumidification method includes the following steps:

[0008] When the air conditioner is in constant temperature and dehumidification mode, the outdoor air inlet is closed and the first indoor air inlet is opened; and

[0009] The fresh air fan is controlled to operate so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet.

[0010] Optionally, controlling the operation of the fresh air fan includes:

[0011] Obtain the dehumidification level set by the user, and find the initial fresh air fan speed corresponding to the dehumidification level;

[0012] The initial fresh air fan speed is taken as the current fresh air fan speed; and

[0013] The operation of the fresh air fan is controlled according to the current fresh air fan speed.

[0014] Optionally, after controlling the operation of the fresh air fan according to the current fresh air fan speed, the method further includes:

[0015] When the fresh air fan is running at the current fresh air fan speed for a first preset time, the current indoor temperature is obtained;

[0016] A temperature difference is determined based on the current indoor temperature and the user-set temperature, and a target coefficient is determined based on the temperature difference; and

[0017] The new current fresh air fan speed is determined based on the current fresh air fan speed and the target coefficient, and the process returns to the step of controlling the operation of the fresh air fan based on the current fresh air fan speed.

[0018] Optionally, determining the target coefficient based on the temperature difference includes:

[0019] When the temperature difference is greater than a first preset temperature threshold, the first preset coefficient is used as the target coefficient;

[0020] When the temperature difference is greater than a second preset temperature threshold and less than a first preset temperature threshold, the second preset coefficient is used as the target coefficient; and

[0021] When the temperature difference is less than the second preset temperature threshold, the third preset coefficient is used as the target coefficient.

[0022] Optionally, before returning to perform the step of controlling the operation of the fresh air fan according to the current fresh air fan speed, the method further includes:

[0023] Obtain the total duration of the air conditioner in constant temperature and dehumidification mode;

[0024] If the total duration is less than or equal to the second preset duration, and no air conditioner shutdown command is received, and the constant temperature and dehumidification mode has not been exited, then return to the step of controlling the operation of the fresh air fan according to the current fresh air fan speed; and

[0025] When the total duration exceeds the second preset duration, or when an air conditioner shutdown command is received, or when the constant temperature and dehumidification mode is exited, the air conditioner is controlled to stop operating.

[0026] Optionally, the air conditioner further includes a compressor, a main fan, and a main heater. A main air duct is formed inside the air conditioner. The main fan and the main heater are disposed in the main air duct. A second indoor air inlet is provided at one end of the main air duct, and a second indoor air outlet is provided at the other end.

[0027] After obtaining the user-defined dehumidification level, the process also includes:

[0028] Find the compressor operating frequency and main fan speed corresponding to the dehumidification capacity level; and

[0029] The compressor is controlled to operate according to its operating frequency, and the main fan is controlled to operate according to its speed, so that indoor air enters the main air duct from the second indoor air inlet, is heated by the main heater, and is discharged from the second indoor air outlet.

[0030] Optionally, a first damper is provided at the outdoor air inlet, and a second damper is provided at the first indoor air inlet;

[0031] When the air conditioner is in constant temperature and dehumidification mode, closing the outdoor air inlet and opening the first indoor air inlet includes:

[0032] When the air conditioner is in constant temperature and dehumidification mode, the first damper is closed to close the outdoor air inlet; and

[0033] Open the second air damper to open the first indoor air inlet.

[0034] Furthermore, to achieve the above objectives, the present invention also proposes a fresh air constant temperature dehumidification device, the fresh air constant temperature dehumidification device comprising:

[0035] The air inlet control module is used to close the outdoor air inlet and open the first indoor air inlet when the air conditioner is in constant temperature and dehumidification mode; and

[0036] The fan control module is used to control the operation of the fresh air fan so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet.

[0037] Furthermore, to achieve the above objectives, the present invention also proposes an air conditioner, which includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner, and the fresh air fan and the fresh air heater are disposed in the fresh air duct. One end of the fresh air duct is provided with an outdoor air inlet and an indoor air inlet, and the other end is provided with an indoor air outlet. The air conditioner also includes a memory, a processor, and a fresh air constant temperature dehumidification program stored in the memory and executable on the processor. When the fresh air constant temperature dehumidification program is executed by the processor, it implements the fresh air constant temperature dehumidification method as described above.

[0038] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing a fresh air constant temperature dehumidification program, which, when executed by a processor, implements the fresh air constant temperature dehumidification method as described above.

[0039] In the fresh air constant temperature dehumidification method proposed in this invention, the solution is applied to an air conditioner. The air conditioner includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner. The fresh air fan and the fresh air heater are disposed in the fresh air duct. One end of the fresh air duct has an outdoor air inlet and a first indoor air inlet, and the other end has a first indoor air outlet. When the air conditioner is in constant temperature dehumidification mode, the outdoor air inlet is closed and the first indoor air inlet is opened. The fresh air fan is controlled to operate so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet. Through the solution of this invention, the fresh air heater can be fully utilized. In constant temperature dehumidification mode, the outdoor air inlet of the fresh air duct is closed, so that the fresh air duct and the indoor environment form a closed loop. The fresh air duct is used to heat the indoor air, ensuring a constant room temperature. In addition, in this way, the electric heater has no risk of condensation or water accumulation, enhancing the reliability of the air conditioner. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the air conditioner structure in the hardware operating environment involved in the embodiments of the present invention;

[0041] Figure 2 This is a schematic flowchart of the first embodiment of the fresh air constant temperature dehumidification method of the present invention;

[0042] Figure 3 This is a schematic diagram of the structure of a cabinet-type air conditioner for constant temperature and humidity dehumidification, according to an embodiment of the fresh air constant temperature and humidity dehumidification method of the present invention.

[0043] Figure 4 This is a schematic flowchart of the second embodiment of the fresh air constant temperature dehumidification method of the present invention;

[0044] Figure 5This is a logic control diagram of a fresh air constant temperature dehumidification air conditioner according to an embodiment of the fresh air constant temperature dehumidification method of the present invention;

[0045] Figure 6 This is a flowchart illustrating the third embodiment of the fresh air constant temperature dehumidification method of the present invention;

[0046] Figure 7 This is a schematic diagram of the main air duct and the fresh air duct in an embodiment of the fresh air constant temperature dehumidification method of the present invention;

[0047] Figure 8 This is a schematic diagram of the functional modules of the first embodiment of the fresh air constant temperature dehumidification device of the present invention.

[0048] Explanation of icon numbers:

[0049] label name label name 100 Main air duct 101 Main heater 102 Main fan 103 Evaporator 104 Second indoor air inlet 105 Second indoor air outlet 200 Fresh air duct 201 Fresh air heater 202 Fresh air fan 203 Outdoor air inlet 204 First indoor air intake 205 First indoor air outlet 206 First air gate 207 Second air vent

[0050] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0052] Reference Figure 1 , Figure 1 This is a schematic diagram of the air conditioner structure in the hardware operating environment involved in the embodiments of the present invention.

[0053] like Figure 1 As shown, the air conditioner may include a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner, and the fresh air fan and fresh air heater are disposed within the fresh air duct. One end of the fresh air duct has an outdoor air inlet and an indoor air inlet, and the other end has an indoor air outlet. The air conditioner may also include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and input units such as buttons. Optionally, the user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable memory (non-volatile memory), such as a disk storage device. Alternatively, the memory 1005 may be a storage device independent of the aforementioned processor 1001.

[0054] Those skilled in the art will understand that Figure 1 The device structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0055] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and a fresh air constant temperature and dehumidification program.

[0056] exist Figure 1 In the air conditioner shown, the network interface 1004 is mainly used to connect to the external network and communicate with other network devices; the user interface 1003 is mainly used to connect to the user equipment and communicate with the user equipment; the device of the present invention calls the fresh air constant temperature dehumidification program stored in the memory 1005 through the processor 1001 and executes the fresh air constant temperature dehumidification method provided in the embodiment of the present invention.

[0057] Based on the above hardware structure, an embodiment of the fresh air constant temperature dehumidification method of the present invention is proposed.

[0058] Reference Figure 2 , Figure 2 This is a schematic flowchart of the first embodiment of the fresh air constant temperature dehumidification method of the present invention.

[0059] In the first embodiment, the fresh air constant temperature dehumidification method is applied to an air conditioner. The air conditioner includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner. The fresh air fan and the fresh air heater are arranged in the fresh air duct. One end of the fresh air duct is provided with an outdoor air inlet and a first indoor air inlet, and the other end is provided with a first indoor air outlet.

[0060] The fresh air constant temperature dehumidification method includes the following steps:

[0061] Step S10: When the air conditioner is in constant temperature and dehumidification mode, close the outdoor air inlet and open the first indoor air inlet.

[0062] It should be noted that the executing entity in this embodiment can be an air conditioner, specifically an air conditioner with constant temperature and dehumidification functions. Furthermore, the air conditioner may also have other functions, which are not limited in this embodiment. The air conditioner can be a cabinet air conditioner, a wall-mounted air conditioner, or other types of air conditioners; these are not limited in this embodiment. In this embodiment, a cabinet air conditioner with fresh air constant temperature and dehumidification functions is used as an example for explanation.

[0063] In specific implementations, such as Figure 3 As shown, Figure 3This is a schematic diagram of a cabinet-style air conditioner with fresh air intake, constant temperature, and dehumidification. The air conditioner can be divided into two parts: a fresh air section and a main air section, which are independent of each other. (See diagram for reference.) Figure 3 , Figure 3 The upper part of the unit is the main air section, and the lower part is the fresh air section. The fresh air section of the air conditioner is equipped with a fresh air fan 202 and a fresh air heater 201. Furthermore, a fresh air duct 200 can be formed inside the fresh air section of the air conditioner. Both the fresh air fan 202 and the fresh air heater 201 can be installed in the fresh air duct 200. Three types of air outlets can be provided in the fresh air section: an outdoor air inlet 203, a first indoor air inlet 204, and a first indoor air outlet 205. The outdoor air inlet and the first indoor air inlet are located at one end of the fresh air duct, and the first indoor air outlet is located at the other end of the fresh air duct. However, the positions of the outdoor air inlet and the first indoor air inlet can be interchanged, and they can also be placed in other locations within the fresh air section of the air conditioner, depending on the actual situation. This embodiment does not impose any restrictions on this.

[0064] It should be understood that, as Figure 3 As shown, the fresh air heater is positioned at one end of the fresh air duct near the air inlet, and the fresh air fan is positioned at one end of the fresh air duct near the air outlet. Alternatively, the fresh air heater can be positioned at one end of the fresh air duct near the air outlet, and the fresh air fan at the other end near the air inlet. This embodiment does not impose any limitations on this arrangement. When the fresh air fan is running, outdoor air entering from the outdoor air inlet or indoor air entering from the first indoor air inlet can enter the fresh air duct, be heated by the fresh air heater, and then discharged from the first indoor air outlet.

[0065] It is understandable that, such as Figure 3 As shown, the main air section of the air conditioner includes a main fan 102, an evaporator 103, and a main heater 101. A main air duct 100 can also be formed inside the main air section, and the main fan 102, evaporator 103, and main heater 101 can all be located within the main air duct 100. Two types of air outlets can be provided in the main air section: a second indoor air inlet 104 and a second indoor air outlet 105. The second indoor air inlet is located at one end of the main air duct, and the second indoor air outlet is located at the other end. When the main fan is running, indoor air entering from the second indoor air inlet enters the main air duct, passes through the evaporator, and is then heated by the main heater. The heated air is then discharged from the second indoor air outlet. In this embodiment, the number of second indoor air inlets is not limited; the specific number can be as follows: Figure 3 The two shown can also be set to other quantities depending on the actual situation, and this embodiment does not limit this.

[0066] It should be understood that after the air conditioner is turned on, it can enter the constant temperature and dehumidification mode when it receives a constant temperature and dehumidification command. In this embodiment, the constant temperature and dehumidification command can be input by the user through the buttons on the air conditioner remote control, by the user's voice input, by the user's input through a mobile terminal, or by other means. This embodiment does not limit the input in this way.

[0067] It should be understood that in constant temperature and dehumidification mode, the outdoor air inlet of the fresh air duct can be closed, and the first indoor air inlet of the fresh air duct can be opened. Since the first indoor air outlet is already open when the air conditioner is running, it is not necessary to specifically control the state of the first indoor air outlet in this step. Of course, the operation of opening the first indoor air outlet can also be added in this step, and this embodiment does not limit this.

[0068] Step S20: Control the operation of the fresh air fan so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet.

[0069] It should be understood that after controlling the status of the outdoor air inlet and the first indoor air inlet through the above steps, the operation of the fresh air fan can be controlled. When the fresh air fan is running, since the first indoor air inlet is open, the suction force of the fresh air fan can draw indoor air from the first indoor air inlet into the fresh air duct. Since the indoor air will pass through the fresh air heater in the fresh air duct, the indoor air in the fresh air duct can be heated by the fresh air heater. Then, the heated air can be discharged from the first indoor air outlet to enter the indoor environment.

[0070] It should be noted that, in addition to being able to... Figure 3 Besides the arrangement shown, other arrangements and orientations are also possible. In addition to a cuboid shape, the fresh air heater can also be other shapes; this embodiment does not impose any limitations on this. Furthermore, this embodiment does not limit the specific type and model of the fresh air heater; it can be selected according to actual circumstances.

[0071] In this embodiment, the fresh air heater can be fully utilized. In constant temperature and dehumidification mode, the outdoor air inlet of the fresh air duct is closed, so that the fresh air duct and the indoor air form a closed loop. The fresh air duct is used to heat the indoor air, ensuring a constant room temperature. In this way, the electric heater is free from the risk of condensation and water ingress, which enhances the reliability of the air conditioner.

[0072] In one embodiment, such as Figure 4 As shown, based on the first embodiment, a second embodiment of the fresh air constant temperature dehumidification method of the present invention is proposed. Step S20 includes:

[0073] Step S201: Obtain the dehumidification level set by the user and find the initial fresh air fan speed corresponding to the dehumidification level.

[0074] It should be noted that when the user activates the constant temperature and dehumidification function of the air conditioner, they can input the user-set temperature TS and the dehumidification level. After entering the constant temperature and dehumidification mode, the air conditioner can close the outdoor air inlet of the fresh air duct and open the first indoor air inlet of the fresh air duct. After performing the above operations, the air conditioner can also detect the indoor temperature T1 and indoor humidity D1 through the air conditioning sensor and lock the fan speed to automatic. It can detect whether the user has adjusted the user-set temperature TS. If the user has adjusted the user-set temperature TS, the user-set temperature TS will be updated to the user-adjusted temperature TS1; if the user has not adjusted the user-set temperature TS, the original user-set temperature TS will remain unchanged.

[0075] It should be understood that the air conditioner in this embodiment can be set to various levels of dehumidification, such as high, medium, and low dehumidification. In addition, it can also be set to levels such as first-level, second-level, third-level, and fourth-level dehumidification. This embodiment does not limit this. In this embodiment, high, medium, and low dehumidification levels are used as examples for explanation.

[0076] It should be noted that the operating logic of the three dehumidification levels—high, medium, and low—is the same, but the parameters differ between them. For example, when the dehumidification capacity level is high, it enters high dehumidification mode. In high dehumidification mode, the compressor operating frequency FR1 = preset high frequency FR1, the main fan speed PR1 = preset high fan speed PR1, and the fresh air fan speed Pr1 = preset high fan speed Pr1. When the dehumidification capacity level is medium, it enters medium dehumidification mode. In medium dehumidification mode, the compressor operating frequency FR1 = preset medium frequency FR1, the main fan speed PR1 = preset medium fan speed PR1, and the fresh air fan speed Pr1 = preset medium fan speed Pr1. When the dehumidification capacity level is low, it enters low dehumidification mode. In low dehumidification mode, the compressor operating frequency FR1 = preset high frequency FR1, the main fan speed PR1 = preset low fan speed PR1, and the fresh air fan speed Pr1 = preset low fan speed Pr1. Since the control logic of the three dehumidification modes is the same, this embodiment will use the high dehumidification mode as an example for explanation.

[0077] It should be understood that the user-defined dehumidification level can be obtained, and after the dehumidification level is determined, the initial fresh air fan speed corresponding to the dehumidification level can be found. For example, when the user-defined dehumidification level is a high dehumidification level, the preset high fan speed Pr1 corresponding to the high dehumidification level can be found, and the found preset high fan speed Pr1 is used as the initial fresh air fan speed.

[0078] In practical implementation, to improve search efficiency, a mapping list can be generated based on the correspondence between the compressor operating frequency, main fan speed, and fresh air fan speed corresponding to each dehumidification level. After determining the dehumidification level set by the user, the initial fresh air fan speed corresponding to that level can be found in the mapping list. Besides this method, other methods can also be used to find the initial fresh air fan speed corresponding to the dehumidification level; this embodiment does not limit this approach.

[0079] Step S202: Take the initial fresh air fan speed as the current fresh air fan speed.

[0080] It should be understood that, since a loop exists in the control logic of this embodiment, for ease of explanation, the current fresh air fan speed is used to represent the current fresh air fan speed in this embodiment. After determining the initial fresh air fan speed, the initial fresh air fan speed can be used as the current fresh air fan speed.

[0081] Step S203: Control the operation of the fresh air fan according to the current fresh air fan speed so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet.

[0082] Understandably, once the required current fresh air fan speed is determined, the operation of the fresh air fan can be controlled according to the current fresh air fan speed to achieve the effect of constant temperature and dehumidification of fresh air.

[0083] Furthermore, in order to control the fresh air fan of the air conditioner more intelligently and achieve better constant temperature and dehumidification effects, the speed of the fresh air fan can be adjusted according to the actual situation to better meet user needs. After step S203, the method further includes:

[0084] When the fresh air fan is running at the current fresh air fan speed for a first preset time, the current indoor temperature is obtained; the temperature difference is determined based on the current indoor temperature and the user-set temperature, and a target coefficient is determined based on the temperature difference; a new current fresh air fan speed is determined based on the current fresh air fan speed and the target coefficient, and the process returns to the step of controlling the operation of the fresh air fan based on the current fresh air fan speed.

[0085] It should be noted that the first preset duration in this embodiment can be set in advance according to the actual situation. For example, the first preset duration can be set to 30 seconds. In addition, the first preset duration can be set to other values. This embodiment does not limit the specific value of the first preset duration.

[0086] It should be understood that after determining the current fresh air fan speed, the fresh air fan can be controlled to run at the current speed. While maintaining the current fresh air fan speed for 30 seconds, the current indoor temperature T1 can be detected by a temperature sensor. Then, the user-set temperature TS can be subtracted from the current indoor temperature to obtain the temperature difference between the current indoor temperature T1 and the user-set temperature TS. For example, temperature difference = TS - T1.

[0087] Understandably, after determining the temperature difference between the current indoor temperature T1 and the user-set temperature TS, a logical judgment can be made based on the temperature difference to determine the target coefficient. The current fresh air fan speed can then be adjusted based on the target coefficient to determine the new current fresh air fan speed. The operating status of the fresh air fan can then be controlled based on the new current fresh air fan speed to enter a new cycle.

[0088] It should be noted that in this embodiment, three different coefficients can be set: 1.05, 1 and 0.95. More coefficients can also be set according to the actual situation, or the coefficients can be set to other values. This embodiment does not limit this.

[0089] In a practical implementation, for example, the first preset coefficient can be set to 1.05, the second preset coefficient can be set to 1, and the third preset coefficient can be set to 0.95. The target coefficient is selected from the first, second, and third preset coefficients based on the current temperature difference.

[0090] It should be noted that two temperature thresholds can be preset, namely a first preset temperature threshold and a second preset temperature threshold. Specifically, the first preset temperature threshold can be set to 3 degrees and the second preset temperature threshold can be set to -3 degrees. In addition, the first preset temperature threshold and the second preset temperature threshold can be set to other values ​​according to the actual situation. This embodiment does not limit the specific values ​​of the first preset temperature threshold and the second preset temperature threshold.

[0091] It should be understood that when the temperature difference TS-T1 > 3 degrees, the first preset coefficient of 1.05 can be used as the target coefficient, and the new current fresh air fan speed Pri = Pr(i-1) * 1.05, meaning the new current fresh air fan speed for the next cycle is 1.05 times the current fresh air fan speed of the previous cycle. When the temperature difference -3 degrees < TS-T1 < 3 degrees, the second preset coefficient of 1 can be used as the target coefficient, and the new current fresh air fan speed Pri = Pr(i-1) * 1, meaning Pri = Pr(i-1), meaning the new current fresh air fan speed for the next cycle is the same as the current fresh air fan speed of the previous cycle. When the temperature difference TS-T1 < -3 degrees, the third preset coefficient of 0.95 can be used as the target coefficient, and the new current fresh air fan speed Pri = Pr(i-1) * 0.95, meaning the new current fresh air fan speed for the next cycle is 0.95 times the current fresh air fan speed of the previous cycle.

[0092] Furthermore, to prevent users from forgetting to turn off the air conditioner, causing it to remain in constant temperature and dehumidification mode for extended periods, thus wasting resources and potentially impacting the air conditioner's lifespan, the total duration of the air conditioner in constant temperature and dehumidification mode can be obtained after determining the new current fresh air fan speed for the next cycle and before executing the step of controlling the fresh air fan operation based on the current fresh air fan speed. The total duration refers to the total time the air conditioner continuously operates in constant temperature and dehumidification mode after being turned on. For example, assuming the user inputs a constant temperature and dehumidification command after turning on the air conditioner, causing it to enter constant temperature and dehumidification mode, the air conditioner can start timing from the moment it enters constant temperature and dehumidification mode, and the total duration can be determined based on the timing data. If, after the air conditioner has been running in constant temperature and dehumidification mode for a period of time, the user inputs another command to switch the air conditioner to another mode, the timing will stop and the technical data will be reset to zero. When the air conditioner re-enters constant temperature and dehumidification mode based on the user's input command, the timing will restart.

[0093] It should be noted that the second preset duration in this embodiment can be set in advance according to the actual situation. For example, the second preset duration can be set to 24 hours. In addition, the second preset duration can be set to other values. This embodiment does not limit the specific value of the second preset duration.

[0094] Understandably, if the total duration is ≤24 hours, no user-inputted air conditioner shutdown command is received, and the air conditioner has not exited the constant temperature and dehumidification mode, it indicates that the air conditioner is operating normally. The process can return to the step of controlling the fresh air fan based on the current fresh air fan speed to begin the next fresh air fan control cycle. However, if the total duration is >24 hours, it indicates that the air conditioner is operating abnormally, possibly because the user forgot to turn it off. Therefore, to protect the air conditioner, its operation can be stopped. Upon receiving an air conditioner shutdown command or when the air conditioner exits the constant temperature and dehumidification mode, it indicates that the user no longer wants to use the air conditioner. In this case, it is unnecessary to control the fresh air fan; the air conditioner can be directly stopped.

[0095] Furthermore, in addition to heating indoor air through the fresh air section, the main air section can also heat indoor air according to different mode requirements to achieve better constant temperature dehumidification. After determining the user-set dehumidification level, the compressor operating frequency and main fan speed corresponding to the dehumidification level can be found. For example, when the user sets a high dehumidification level, the preset high frequency FR1 and preset high fan speed PR1 corresponding to the high dehumidification level can be found. The compressor operation is controlled according to the preset high frequency FR1, and the main fan operation is controlled according to the preset high fan speed PR1 to heat the indoor air through the main heater in the main air duct to meet the current constant temperature dehumidification requirements.

[0096] In practical implementation, since in some cases it may only be necessary to heat the indoor air through the fresh air section, without using the main air section, the parameters related to the main air section corresponding to the dehumidification mode can be set to 0. For example, the main fan speed corresponding to a low dehumidification level can be set to 0. The specific parameter settings and control logic can be determined according to the actual situation, and this embodiment does not impose any restrictions on them.

[0097] In specific implementations, it can be as follows: Figure 5 As shown, Figure 5It is the logic control diagram of the fresh air constant temperature and dehumidification air conditioner. Taking the fresh air constant temperature and dehumidification air conditioner system of a household air conditioner cabinet as an example, when the remote control turns on the constant temperature and dehumidification function, the indoor and outdoor air intake dampers of the fresh air duct are closed, and the indoor air intake damper is opened. The air conditioner sensor detects the indoor temperature T1, indoor humidity D1, the wind speed is locked as automatic wind, and the constant temperature TS is the temperature set before the remote control enters the constant temperature and dehumidification. If the user adjusts the set temperature with the remote control, TS is updated to the user-set temperature. If the user selects the high dehumidification level, the compressor operating frequency FR1 = the preset high frequency FR1, the main duct motor speed PR1 = the preset high wind speed PR1, and the fresh air fan speed Pr1 = the preset high wind speed Pr1. After running for DetaT = 30s, the ambient temperature T1 is detected. If TS - T1 > 3 degrees, the fresh air fan speed Pri = Pr(i - 1) * 1.05, that is, the fresh air fan speed is adjusted to 1.05 times the speed in the previous cycle. If -3 degrees < TS - T1 < 3 degrees, it can be considered that the system is in the constant temperature and dehumidification mode, and the fresh air fan speed Pri = Pr(i - 1), which is the same as the speed in the previous cycle. If TS - T1 < -3 degrees, the fresh air fan speed Pri = Pr(i - 1) * 0.95, which is adjusted to 0.95 times the speed in the previous cycle. The system detects the difference between TS and T1 every 30s. If the user has no operation, the air conditioner ends operation after running for 24h. If the user shuts down or switches the mode, the system ends the constant temperature and dehumidification function according to the remote control operation.

[0098] In this embodiment, through the above logic control, the fresh air heater is fully utilized, and the material cost is low. Based on the existing fresh air air conditioner with heating function, no additional material cost is required, and only new control logic needs to be added to achieve the constant temperature and dehumidification function. The system safety is improved. Compared with the conventional constant temperature and dehumidification scheme, it can avoid the electric heater running with water, improving the safety and service life of the air conditioner.

[0099] In one embodiment, as Figure 6 shown, based on the first embodiment or the second embodiment, the third embodiment of the fresh air constant temperature and dehumidification method of the present invention is proposed. In this embodiment, based on the first embodiment, a first damper is provided at the outdoor air inlet, and a second damper is provided at the first indoor air inlet; the step S10 includes:

[0100] Step S101, when the air conditioner is in the constant temperature and dehumidification mode, close the first damper to close the outdoor air inlet.

[0101] In specific implementation, as Figure 7 shown, Figure 7 is the schematic diagram of the structure of the main duct and the fresh air duct, Figure 7The upper part is a schematic diagram of the main air duct structure. The main air duct is equipped with a main heater. The indoor air enters from the second indoor air inlet of the main air duct, is heated by the main heater, and then flows out from the second indoor air outlet of the main air duct to enter the room. Figure 7 The lower half is a schematic diagram of the fresh air duct structure. A fresh air heater is installed inside the fresh air duct. The air inlet of the fresh air duct is divided into two parts: an outdoor air inlet and a second indoor air inlet. A first damper 206 is installed at the outdoor air inlet, and a second damper 207 is installed at the indoor air inlet. By controlling the state of the first damper 206 and the second damper 207, the state of the outdoor air inlet and the second indoor air inlet can be controlled.

[0102] It should be understood that, since air does not need to be drawn from the outside in the constant temperature dehumidification mode, but rather from the inside, the outdoor air inlet needs to be closed in this case. In this embodiment, the outdoor air inlet can be closed by closing the first damper 206.

[0103] Step S102: Open the second air damper to open the first indoor air inlet.

[0104] It should be understood that, since the first indoor air inlet needs to be open in this situation, in this embodiment, the air inlet can be opened by opening the second air damper 207. In this case, indoor air can enter the fresh air duct through the first indoor air inlet, and after being heated by the fresh air heater, it can be discharged from the first indoor air outlet of the fresh air duct to enter the room.

[0105] It should be noted that, in addition to the above-described implementation method, an additional inlet can be added to the outdoor fresh air intake to draw air from the outdoor unit's duct. This hot air entering the room reduces the energy consumption of the electric heating device, achieving energy savings. If this embodiment is used on larger air conditioners such as ducted units, the air from the fresh air outlet and the main air outlet can be mixed before being delivered indoors, further enhancing the user experience.

[0106] In this embodiment, by setting a first air damper and a second air damper at the air inlet of the fresh air duct, the states of the outdoor air inlet and the first indoor air inlet of the fresh air duct can be controlled respectively, which can achieve a better control effect.

[0107] Furthermore, this embodiment of the invention also proposes a storage medium storing a fresh air constant temperature dehumidification program, which, when executed by a processor, implements the steps of the fresh air constant temperature dehumidification method described above.

[0108] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0109] In addition, refer to Figure 8 The present invention also proposes a fresh air constant temperature dehumidification device, the fresh air constant temperature dehumidification device comprising:

[0110] The air inlet control module 10 is used to close the outdoor air inlet and open the first indoor air inlet when the air conditioner is in constant temperature and dehumidification mode.

[0111] It should be noted that the air conditioner in this embodiment can specifically be an air conditioner with constant temperature and dehumidification function. In addition, the air conditioner may also have other functions, which are not limited in this embodiment. The air conditioner may be a cabinet air conditioner or a wall-mounted air conditioner, or other types of air conditioners. This embodiment does not limit them. In this embodiment, a cabinet air conditioner with fresh air constant temperature and dehumidification function is used as an example for explanation.

[0112] In specific implementations, such as Figure 3 As shown, Figure 3 This is a schematic diagram of a cabinet-style air conditioner with fresh air intake, constant temperature, and dehumidification. The air conditioner can be divided into two parts: a fresh air section and a main air section, which are independent of each other. (See diagram for reference.) Figure 3 , Figure 3 The upper part of the unit is the main air section, and the lower part is the fresh air section. The fresh air section of the air conditioner is equipped with a fresh air fan 202 and a fresh air heater 201. Furthermore, a fresh air duct 200 can be formed inside the fresh air section of the air conditioner. Both the fresh air fan 202 and the fresh air heater 201 can be installed in the fresh air duct 200. Three types of air outlets can be provided in the fresh air section: an outdoor air inlet 203, a first indoor air inlet 204, and a first indoor air outlet 205. The outdoor air inlet and the first indoor air inlet are located at one end of the fresh air duct, and the first indoor air outlet is located at the other end of the fresh air duct. However, the positions of the outdoor air inlet and the first indoor air inlet can be interchanged, and they can also be placed in other locations within the fresh air section of the air conditioner, depending on the actual situation. This embodiment does not impose any restrictions on this.

[0113] It should be understood that, as Figure 3As shown, the fresh air heater is positioned at one end of the fresh air duct near the air inlet, and the fresh air fan is positioned at one end of the fresh air duct near the air outlet. Alternatively, the fresh air heater can be positioned at one end of the fresh air duct near the air outlet, and the fresh air fan at the other end near the air inlet. This embodiment does not impose any limitations on this arrangement. When the fresh air fan is running, outdoor air entering from the outdoor air inlet or indoor air entering from the first indoor air inlet can enter the fresh air duct, be heated by the fresh air heater, and then discharged from the first indoor air outlet.

[0114] It is understandable that, such as Figure 3 As shown, the main air section of the air conditioner includes a main fan 102, an evaporator 103, and a main heater 101. A main air duct 100 can also be formed inside the main air section, and the main fan 102, evaporator 103, and main heater 101 can all be located within the main air duct 100. Two types of air outlets can be provided in the main air section: a second indoor air inlet 104 and a second indoor air outlet 105. The second indoor air inlet is located at one end of the main air duct, and the second indoor air outlet is located at the other end. When the main fan is running, indoor air entering from the second indoor air inlet enters the main air duct, passes through the evaporator, and is then heated by the main heater. The heated air is then discharged from the second indoor air outlet. In this embodiment, the number of second indoor air inlets is not limited; the specific number can be as follows: Figure 3 The two shown can also be set to other quantities depending on the actual situation, and this embodiment does not limit this.

[0115] It should be understood that after the air conditioner is turned on, it can enter the constant temperature and dehumidification mode when it receives a constant temperature and dehumidification command. In this embodiment, the constant temperature and dehumidification command can be input by the user through the buttons on the air conditioner remote control, by the user's voice input, by the user's input through a mobile terminal, or by other means. This embodiment does not limit the input in this way.

[0116] It should be understood that in constant temperature and dehumidification mode, the outdoor air inlet of the fresh air duct can be closed, and the first indoor air inlet of the fresh air duct can be opened. Since the first indoor air outlet is already open when the air conditioner is running, it is not necessary to specifically control the state of the first indoor air outlet in this step. Of course, the operation of opening the first indoor air outlet can also be added in this step, and this embodiment does not limit this.

[0117] The fan control module 20 is used to control the operation of the fresh air fan so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet.

[0118] It should be understood that after controlling the status of the outdoor air inlet and the first indoor air inlet through the above steps, the operation of the fresh air fan can be controlled. When the fresh air fan is running, since the first indoor air inlet is open, the suction force of the fresh air fan can draw indoor air from the first indoor air inlet into the fresh air duct. Since the indoor air will pass through the fresh air heater in the fresh air duct, the indoor air in the fresh air duct can be heated by the fresh air heater. Then, the heated air can be discharged from the first indoor air outlet to enter the indoor environment.

[0119] It should be noted that, in addition to being able to... Figure 3 Besides the arrangement shown, other arrangements and orientations are also possible. In addition to a cuboid shape, the fresh air heater can also be other shapes; this embodiment does not impose any limitations on this. Furthermore, this embodiment does not limit the specific type and model of the fresh air heater; it can be selected according to actual circumstances.

[0120] In this embodiment, the fresh air heater can be fully utilized. In constant temperature and dehumidification mode, the outdoor air inlet of the fresh air duct is closed, so that the fresh air duct and the indoor air form a closed loop. The fresh air duct is used to heat the indoor air, ensuring a constant room temperature. In this way, the electric heater is free from the risk of condensation and water ingress, which enhances the reliability of the air conditioner.

[0121] Other embodiments or specific implementation methods of the fresh air constant temperature dehumidification device described in this invention can refer to the above-mentioned method embodiments, and will not be repeated here.

[0122] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0123] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0124] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This estimation machine software product is stored in an estimation machine readable storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a smart device (which may be a mobile phone, estimation machine, air conditioner, or network air conditioner, etc.) to execute the methods described in the various embodiments of the present invention.

[0125] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A method for constant temperature and dehumidification of fresh air, characterized in that, The fresh air constant temperature dehumidification method is applied to an air conditioner. The air conditioner includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner. The fresh air fan and the fresh air heater are arranged in the fresh air duct. One end of the fresh air duct is provided with an outdoor air inlet and a first indoor air inlet, and the other end is provided with a first indoor air outlet. The fresh air constant temperature dehumidification method includes the following steps: When the air conditioner is in constant temperature and dehumidification mode, the outdoor air inlet is closed and the first indoor air inlet is opened; and Obtain the dehumidification level set by the user, and find the initial fresh air fan speed corresponding to the dehumidification level; The initial fresh air fan speed is taken as the current fresh air fan speed; and The operation of the fresh air fan is controlled according to the current fresh air fan speed, so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet. When the fresh air fan is running at the current fresh air fan speed for a first preset time, the current indoor temperature is obtained; A temperature difference is determined based on the current indoor temperature and the user-set temperature, and a target coefficient is determined based on the temperature difference; and The new current fresh air fan speed is determined based on the current fresh air fan speed and the target coefficient, and the process returns to the step of controlling the operation of the fresh air fan based on the current fresh air fan speed.

2. The fresh air constant temperature dehumidification method as described in claim 1, characterized in that, The step of determining the target coefficient based on the temperature difference includes: When the temperature difference is greater than a first preset temperature threshold, the first preset coefficient is used as the target coefficient; When the temperature difference is greater than a second preset temperature threshold and less than a first preset temperature threshold, the second preset coefficient is used as the target coefficient; and When the temperature difference is less than the second preset temperature threshold, the third preset coefficient is used as the target coefficient.

3. The fresh air constant temperature dehumidification method as described in claim 1, characterized in that, Before returning to the step of controlling the operation of the fresh air fan according to the current fresh air fan speed, the method further includes: Obtain the total duration of the air conditioner in constant temperature and dehumidification mode; If the total duration is less than or equal to the second preset duration, and no air conditioner shutdown command is received, and the constant temperature and dehumidification mode has not been exited, then return to the step of controlling the operation of the fresh air fan according to the current fresh air fan speed; and When the total duration exceeds the second preset duration, or when an air conditioner shutdown command is received, or when the constant temperature and dehumidification mode is exited, the air conditioner is controlled to stop operating.

4. The fresh air constant temperature dehumidification method as described in claim 1, characterized in that, The air conditioner also includes a compressor, a main fan, and a main heater. A main air duct is formed inside the air conditioner. The main fan and the main heater are installed in the main air duct. A second indoor air inlet is provided at one end of the main air duct, and a second indoor air outlet is provided at the other end. After obtaining the user-defined dehumidification level, the process also includes: Find the compressor operating frequency and main fan speed corresponding to the dehumidification capacity level; as well as The compressor is controlled to operate according to its operating frequency, and the main fan is controlled to operate according to its speed, so that indoor air enters the main air duct from the second indoor air inlet, is heated by the main heater, and is discharged from the second indoor air outlet.

5. The fresh air constant temperature dehumidification method according to any one of claims 1 to 4, characterized in that, A first air damper is provided at the outdoor air inlet, and a second air damper is provided at the first indoor air inlet; When the air conditioner is in constant temperature and dehumidification mode, closing the outdoor air inlet and opening the first indoor air inlet includes: When the air conditioner is in constant temperature and dehumidification mode, the first damper is closed to close the outdoor air inlet; as well as Open the second air damper to open the first indoor air inlet.

6. A fresh air constant temperature dehumidification device, characterized in that, The fresh air constant temperature dehumidification device includes: The air inlet control module is used to close the outdoor air inlet and open the first indoor air inlet when the air conditioner is in constant temperature and dehumidification mode; and The fan control module is used to obtain the dehumidification level set by the user and find the initial fresh air fan speed corresponding to the dehumidification level; use the initial fresh air fan speed as the current fresh air fan speed; and control the operation of the fresh air fan according to the current fresh air fan speed so that indoor air enters the fresh air duct from the first indoor air inlet, is heated by the fresh air heater, and is discharged from the first indoor air outlet; when the fresh air fan is running at the current fresh air fan speed for a first preset time, obtain the current indoor temperature; determine the temperature difference based on the current indoor temperature and the user-set temperature, and determine the target coefficient based on the temperature difference; and determine a new current fresh air fan speed based on the current fresh air fan speed and the target coefficient, and return to execute the step of controlling the operation of the fresh air fan according to the current fresh air fan speed.

7. An air conditioner, characterized in that, The air conditioner includes a fresh air fan and a fresh air heater. A fresh air duct is formed inside the air conditioner. The fresh air fan and the fresh air heater are disposed in the fresh air duct. One end of the fresh air duct is provided with an outdoor air inlet and an indoor air inlet, and the other end is provided with an indoor air outlet. The air conditioner also includes a memory, a processor, and a fresh air constant temperature dehumidification program stored in the memory and executable on the processor. When the fresh air constant temperature dehumidification program is executed by the processor, it implements the fresh air constant temperature dehumidification method as described in any one of claims 1 to 5.

8. A storage medium, characterized in that, The storage medium stores a fresh air constant temperature dehumidification program, which, when executed by the processor, implements the fresh air constant temperature dehumidification method as described in any one of claims 1 to 5.

Images