Fresh air air conditioner

Abstract

The present invention discloses an all-in-one fresh air air conditioner, comprising an outer shell, a fan, a filter assembly, a collection unit, a static pressure difference detection component and a controller. An air duct for air flow is formed on the outer shell, the fan is arranged in the air duct, the filter assembly comprises a filter screen and a filter screen installation component, for filtering the passing air flow, and the filter screen is connected in the air duct through the filter screen installation component; the controller calculates the cumulative purification amount M of the air purification equipment according to the pollutant concentration C per unit time collected by the collection unit, the static pressure difference P collected by the static pressure difference detection component, and the ventilation volume F obtained according to the fan speed, calculates the cumulative purification amount A of the filter screen within the cumulative operating time T, and judges the filter screen life according to the actual use status of the filter screen, thereby avoiding the problems of untimely filter screen replacement in harsh environment areas and frequent filter screen replacement in environments with good air quality, caused by relying solely on the filter screen usage time to judge the filter screen replacement.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and in particular, relates to a fresh air air conditioner integrated machine. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the quality of life. Due to indoor furniture and decoration, indoor air pollution is caused for a long time, and people have stronger requirements for indoor fresh air. The total heat exchanger can realize the heat exchange between indoor and outdoor air to meet the user's requirements for fresh air.

[0003] In order to filter indoor and outdoor air and improve air quality, the air conditioner is equipped with a filtering device. The main function of the filtering device is the filter. As the filter is used for a period of time, its filtering effect will be affected. Therefore, it is important to consider that the filter needs to be replaced after a period of use, otherwise it will affect the air volume and the quality of fresh air will also decrease.

[0004] In order to solve this problem, most manufacturers have a filter replacement reminder function. Traditional filter replacement is mainly determined by the length of time the filter is used. However, due to the different places where the air conditioner is used, the actual amount of pollutants attached to the filter is also different. In areas with severe air pollution, the actual life of the filter is shorter, while in areas with good air quality, the actual life of the filter is longer.

[0005] Simply calculating the filter life according to the length of time the filter has been in use will result in the filter exceeding its actual lifespan but still being used in areas with severe air pollution, causing the filtering effect to decay or even fail. In areas with good air quality, the filter will not reach its actual lifespan after the preset replacement time, resulting in a waste of filter lifespan and unnecessary replacement. Therefore, it is actually inaccurate to use this method to provide filter replacement reminders, and the filter will definitely be replaced untimely or prematurely. Summary of the invention

[0006] The purpose of the present invention is to provide a fresh air air conditioning integrated machine to solve the problems existing in the prior art, such as the large deviation between the detection method of the filter life in the existing integrated machine and the actual use of the filter, and the poor accuracy of the filter replacement reminder.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] The present invention provides a fresh air air conditioning integrated machine, which comprises:

[0009] An outer shell having an air duct formed thereon for air flow;

[0010] A fan, which is arranged in the air duct;

[0011] A filter assembly, comprising a filter screen and a filter screen mounting member, for filtering the passing airflow, wherein the filter screen is connected in the air duct via the filter screen mounting member;

[0012] A collection unit, which is used to collect the concentration of pollutants in the air upstream of the filter;

[0013] A static pressure difference detection member connected to the filter screen and used for detecting a static pressure difference of the filter screen corresponding to the filter screen;

[0014] The controller is configured as:

[0015] Used to receive the pollutant concentration C collected by the collection unit within the unit time;

[0016] Used to receive the static pressure difference value P detected by the static pressure difference detection element within the unit time;

[0017] Control and obtain the rotation speed V of the fan in the unit time, and then obtain the ventilation volume F through the filter;

[0018] Obtain the cumulative running time T of the filter;

[0019] The controller calculates the cumulative purification amount M of the air purification device and the cumulative purification amount A of the filter within the cumulative operating time T according to the pollutant concentration C, the static pressure difference P, and the ventilation volume F within a unit time.

[0020] In some embodiments of the present invention, a display element is further included, which is connected to the controller and is used to display the usage status of the filter.

[0021] In some embodiments of the present invention, the controller calculates the cumulative purification amount A of the filter according to the following formula:

[0022] Wherein, k is the filtration efficiency of the filter screen.

[0023] In some embodiments of the present invention, the controller compares the calculated cumulative purification amount A with the preset value A0 and the prompt value A x Compare:

[0024] When A≤A x When the controller controls the display element to display a normal working signal of the filter;

[0025] When A x ≤A≤A0, the controller controls the display element to display a signal that the filter needs to be cleaned;

[0026] When A≥A0, the controller controls the display element to display a signal indicating that the filter needs to be replaced.

[0027] In some embodiments of the present invention, after the filter is replaced, the controller resets the cumulative purification amount A of the filter to zero.

[0028] In some embodiments of the present invention, the filter assembly is also provided with a filter cleaning device, which includes a driving part installed on the filter mounting piece, a telescopic part connected to the driving part, and a cleaning part connected to the end of the telescopic part.

[0029] In some embodiments of the present invention, the telescopic parts are located on both sides of the filter screen to avoid affecting the filtering effect of the filter element.

[0030] In some embodiments of the present invention, the width of the cleaning part is adapted to the width of the filter, and bristles are formed on the side of the cleaning part that contacts the filter. After the driving part receives a cleaning instruction issued by the user, it drives the telescopic part to telescope and control the cleaning part to move back and forth up and down along the surface of the filter.

[0031] In some embodiments of the present invention, after cleaning is completed, the controller controls the air inlet fan to reverse and output the dust cleaned by the filter.

[0032] In some embodiments of the present invention, after the filter is cleaned, the controller obtains the static pressure difference Pi detected by the static pressure difference detection element, and calculates the basic purification amount Ai according to the current static pressure difference Pi. The cumulative purification amount Ai

[0033] Compared with the prior art, the advantages and positive effects of the present invention are:

[0034] The fresh air air conditioner involved in the present application collects air information through a controller, detects the static pressure difference of the filter in real time, and determines the filter life according to the actual use condition of the filter, thereby avoiding the problems of untimely filter replacement in harsh environmental areas and frequent filter replacement in environments with good air quality, etc.

[0035] The filter detection is more intelligent and is equipped with a filter cleaning device, which can perform basic cleaning on the filter, reducing the frequency of filter replacement, helping to increase the overall service life of the filter, providing a good user experience and high economic benefits.

[0036] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of an embodiment of the fresh air air conditioning integrated machine proposed by the present invention;

[0039] Figure 2 Filter life test flow chart

[0040] Figure 3 This is a schematic diagram of the indoor filter life detection process;

[0041] Figure 4 This is a schematic diagram of the outdoor filter life detection process;

[0042] Figure 5 It is a schematic diagram of the outdoor filter cleaning control and life detection process;

[0043] Figure 6 It is one of the structural diagrams of the filter cleaning device;

[0044] Figure 7 This is the second structural diagram of the filter cleaning device;

[0045] Figure 8 This is the relationship curve between the basic purification capacity Ai and the static pressure difference Pi for different models;

[0046] In the figure,

[0047] 100. Outer shell;

[0048] 110. Outdoor air inlet;

[0049] 120. Indoor air outlet;

[0050] 130. Indoor return air vent;

[0051] 140. Outdoor exhaust vent;

[0052] 200, air inlet heat exchanger;

[0053] 300. Exhaust heat exchanger;

[0054] 400, air inlet fan;

[0055] 500, exhaust fan;

[0056] 600, filter assembly;

[0057] 610, driving unit; 620, telescopic unit; 630, cleaning unit;

[0058] 700. Heat exchange core. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0065] The air conditioner performs the cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged.

[0066] The compressor compresses the refrigerant gas at high temperature and high pressure and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0067] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0068] The outdoor unit of the air conditioner refers to the part of the refrigeration cycle including the compressor, the exhaust heat exchanger 300 and the exhaust fan 500, the indoor unit of the air conditioner includes the intake heat exchanger 200 and the intake fan 400, and a throttling device (such as a capillary tube or an electronic expansion valve) can be provided in the indoor unit or the outdoor unit.

[0069] The intake heat exchanger 200 and the exhaust heat exchanger 300 function as a condenser or an evaporator. When the intake heat exchanger 200 functions as a condenser, the air conditioner performs a heating mode, and when the intake heat exchanger 200 functions as an evaporator, the air conditioner performs a cooling mode.

[0070] The way in which the air inlet heat exchanger 200 and the air exhaust heat exchanger 300 are switched to function as a condenser or an evaporator generally uses a four-way valve. For details, please refer to the settings of conventional air conditioners and will not be described in detail here.

[0071] The refrigeration working principle of the air conditioner is: the operation of the compressor makes the air inlet heat exchanger 200 (in the indoor unit, it is the evaporator at this time) in an ultra-low pressure state, and the liquid refrigerant in the air inlet heat exchanger 200 evaporates rapidly to absorb heat, and the wind blown out by the indoor fan is cooled by the coil of the air inlet heat exchanger 200 and becomes cold air blown into the room. The evaporated refrigerant is pressurized by the compressor and condensed into liquid under the high pressure environment of the exhaust heat exchanger 300 (in the outdoor unit, it is the condenser at this time), releasing heat, and dissipating the heat into the atmosphere through the exhaust fan 500. Such a cycle achieves the cooling effect.

[0072] The heating working principle of the air conditioner is: the gaseous refrigerant is pressurized by the compressor to become a high-temperature and high-pressure gas, which enters the air inlet heat exchanger 200 (the condenser at this time), condenses and liquefies to release heat, becomes a liquid, and heats the indoor air at the same time, thereby achieving the purpose of increasing the indoor temperature.

[0073] The liquid refrigerant is decompressed by the throttling device and enters the exhaust heat exchanger 300 (the evaporator at this time), where it evaporates and absorbs heat to become a gas. At the same time, it absorbs heat from the outdoor air (the outdoor air becomes colder), becomes a gaseous refrigerant, and enters the compressor again to start the next cycle.

[0074] refer to Figure 1 , Figure 2 The fresh air air conditioning integrated machine involved in the present application includes an outer shell 100, a heat exchange core 700 and a heat exchanger arranged in the outer shell 100. An air duct for air circulation is formed in the outer shell 100, and a fan is arranged in the air duct to realize gas circulation.

[0075] A filter assembly 600 is provided in the air duct. The filter assembly 600 includes a filter screen and a filter screen mounting member. The filter screen is fixed in the air duct through the filter screen mounting member and is used to filter the airflow conveyed through the air duct.

[0076] In the air duct, a collection unit is provided on the upstream side of the filter assembly for collecting the pollutant concentration of the air passing through the filter assembly. Since PM2.5 plays a major role in the accumulated amount of the filter, the concentration of PM2.5 is mainly detected here.

[0077] The filter is also fixed with a static pressure difference detection component for detecting the pressure difference of the airflow before and after the filter, so as to determine the accumulated amount of pollutants on the filter.

[0078] The controller receives the pollutant concentration C collected by the collection unit per unit time, the static pressure difference P detected by the static pressure difference detection component, and the fan speed V (the ventilation volume F of the filter can be calculated based on the fan speed). Based on the above parameters, the controller calculates the cumulative purification volume A of the filter within the cumulative operating time T.

[0079] In addition to receiving the data from the acquisition unit and the rotation speed V and static pressure difference P of the fan, the controller is also used to accumulate the running time of the fan to determine the working time of the filter assembly 600.

[0080] The cumulative purification volume A of the filter is calculated according to the formula: Calculate, where k is the filtration efficiency of the filter.

[0081] By accumulating and superimposing the filter purification amount within each unit time t, we can get the cumulative purification amount A on the filter after the fan runs for T time.

[0082] A display component is arranged on the outer shell or other position, and the controller is connected to the display component, so that the real-time accumulated purification amount A is displayed to the user through the display component, which is convenient for the user to observe in real time.

[0083] In addition, the controller will calculate the cumulative purification amount A and the preset value A0 and the prompt value A x In comparison, A0 is the maximum cumulative purification capacity of the filter. That is, when A exceeds A0, it means that the filter has reached its replacement life and the user needs to replace it in time to ensure air quality.

[0084] At the same time, the controller also sets a prompt value A x , when A≤A x When A x When ≤A≤A0, the controller controls the display to display the filter to be cleaned signal, so as to give customers sufficient prompt information.

[0085] A x The specific value of is set according to actual needs. For example, A x =A0 / 2, or other values.

[0086] When the user replaces the filter, the controller resets the cumulative purification amount A of the filter to zero and recalculates the new filter.

[0087] Specifically, an outdoor air inlet 110 , an outdoor air outlet 140 , an indoor air supply outlet 120 and an indoor air return outlet 130 are formed on the outer shell 100 of the fresh air air conditioning integrated machine.

[0088] The air duct specifically includes an air inlet channel and an air exhaust channel. The air inlet channel is located between the outdoor air inlet 110 and the indoor air supply outlet 120 for conveying outdoor fresh air. The air exhaust channel is located between the indoor return air outlet 130 and the outdoor air exhaust outlet 140 for conveying indoor polluted air.

[0089] In order to filter indoor polluted air and outdoor fresh air during the air inlet and outlet process, filter components 600 are respectively arranged in the air inlet channel and the air exhaust channel.

[0090] The exhaust air heat exchanger 300 is disposed in the exhaust air passage, and the intake air heat exchanger 200 is formed in the intake air passage.

[0091] The outer shell 100 is used as a mounting and fixing component and is installed in the user's home during actual use. The outer shell 100 is usually made of sheet metal material and has a flat rectangular structure as a whole. During installation and use, it can be hoisted in the ceiling of the user's home for use.

[0092] An installation cavity is formed in the outer shell 100 for installing working components such as heat exchangers and compressors.

[0093] The heat exchange core 700 is a key component of the total heat exchanger, which is used to perform heat exchange between indoor dirty air and outdoor fresh air. The heat exchange core 700 is usually equipped with a first air flow channel (unmarked) for exhausting air to the outdoors, and a second air flow channel for introducing outdoor fresh air into the indoor space. Heat transfer can be performed between the first air flow channel and the second air flow channel.

[0094] During operation, when the indoor exhaust air and fresh air flow through the heat exchange core 700 in a positive cross manner, due to the temperature difference and steam partial pressure difference between the airflows on both sides of the airflow separator, the two airflows present heat and mass transfer phenomena when passing through the separator, causing a full heat exchange process.

[0095] During summer operation, the fresh air obtains cooling from the air-conditioning exhaust, which lowers the temperature. At the same time, it is dried by the air-conditioning air, which reduces the moisture content of the fresh air.

[0096] During winter operation, the fresh air obtains heat from the exhaust air of the air-conditioning room and its temperature rises. Thus, through the full heat exchange process of the heat exchange core 700, the fresh air recovers energy from the exhaust air of the air-conditioning room.

[0097] At the same time, the shell is equipped with an air inlet fan 400 and an exhaust fan 500. The air inlet fan 400 is arranged in the indoor air inlet area to drive the outdoor fresh air to be input into the room from the indoor air supply port 120. The exhaust fan 500 is arranged in the outdoor exhaust area to drive the indoor polluted air to be output to the outside from the outdoor exhaust port 140.

[0098] Outdoor fresh air enters the outer shell 100 from the outdoor air inlet 110, and is input into the room through the indoor air supply port 120. Indoor polluted air enters the outer shell 100 from the indoor return air port 130, and is output to the outside through the outdoor exhaust port 140. The indoor polluted air and outdoor fresh air selectively pass through the heat exchange core 700 to perform heat exchange in the heat exchange core 700.

[0099] The compressor is connected to the four-way valve, the exhaust air heat exchanger 300 and the inlet air heat exchanger 200 through the refrigerant pipeline.

[0100] The filter assembly 600 includes a filter screen and a filter screen mounting member. The filter assembly 600 in the air inlet channel and the air outlet channel filters the air entering and being exhausted from the room respectively.

[0101] The filter in the air inlet channel is defined as the outdoor filter, which is used to filter the outdoor fresh air, and the filter in the air exhaust channel is defined as the indoor filter, which is used to filter the indoor polluted air.

[0102] The fresh air air conditioning integrated machine in the present application is also provided with a collection unit, which is used to collect air information before passing through the filter in the air duct.

[0103] Specifically, it includes an indoor collection unit for collecting air information passing through an indoor filter and an outdoor collection unit for collecting air information passing through an outdoor filter.

[0104] The information collected by the indoor collection unit and the outdoor collection unit mainly includes the PM2.5 pollutant concentration.

[0105] The indoor collection unit collects air information in the exhaust duct area between the indoor return air outlet 130 and the indoor filter, and the outdoor collection unit collects air information in the inlet duct area between the outdoor air inlet 110 and the outdoor filter.

[0106] In other embodiments, in order to facilitate installation and maintenance, the indoor collection unit may also be directly installed on the indoor return air outlet 130 , and the outdoor collection unit may be directly installed on the outdoor air inlet 110 .

[0107] The static pressure difference detection component is installed on the filter. Specifically, the static pressure difference detection component is installed on the indoor filter and the outdoor filter respectively, and the static pressure difference of the filter on the indoor filter and the outdoor filter is separately collected.

[0108] The indoor data collection unit, the outdoor data collection unit and the static pressure difference detection element are all connected to the controller, and the collected signals are transmitted to the controller, and then processed by the controller.

[0109] The controller calculates and controls the indoor and outdoor filters in the exhaust and inlet ducts individually without affecting each other.

[0110] Specifically, the controller controls and obtains the working time of the air intake fan 400 and the exhaust fan 500 separately.

[0111] The controller also independently controls and obtains the rotation speed V of the air inlet fan 400 and the exhaust fan 500, and calculates the air volume F passing through the indoor filter and the outdoor filter in turn.

[0112] The air volume F is calculated based on the rotation speed V, and may be a constant or a function of the fan rotation speed V and the angle of the air guide plate.

[0113] When the air volume is a variable, a curve corresponding to the change of the independent variable (or a corresponding relationship of segmented data, or a functional relationship) can be saved in advance in a storage module of the air purification device for use in calculation.

[0114] The display unit connected to the controller can separately display the cumulative purification amount of the indoor filter and the outdoor filter.

[0115] Below, the specific detection process of indoor and outdoor filters is described in detail:

[0116] refer to Figure 3 The specific method of indoor filter life detection is:

[0117] The indoor collection unit collects indoor air information and obtains the pollutant concentration Cn.

[0118] The static pressure difference detection device installed on the indoor filter detects the real-time static pressure difference Pn of the indoor filter.

[0119] The controller obtains the rotation speed Vn of the exhaust fan 500, and obtains the current air volume Fn passing through the indoor filter according to the rotation speed of the exhaust fan 500.

[0120] After obtaining the above parameters, the controller calculates the cumulative purification amount A of the filter according to the following formula:

[0121]

[0122] Wherein, k is the mode coefficient, and dt is a time unit, which can be 5 minutes or other time units.

[0123] After each time unit, the corresponding parameters are tested and accumulated to obtain the cumulative purification amount of the filter.

[0124] The calculated cumulative filter purification amount An is compared with the preset value A0 of the filter purification amount:

[0125] When An≤A x When the controller controls the display component to display the normal working signal of the filter;

[0126] When A x When ≤An≤A0, the controller controls the display to display the filter to be cleaned signal;

[0127] When An≥A x When the controller controls the display unit to display the signal that the filter needs to be replaced.

[0128] After replacing the filter, the controller resets the cumulative purification volume A of the filter to zero and restarts the filter monitoring.

[0129] refer to Figure 4, the life detection method of outdoor filter is as follows:

[0130] The outdoor collection unit collects indoor air information and obtains the pollutant concentration Cm.

[0131] The static pressure difference detection device installed on the outdoor filter detects the real-time static pressure difference Pm of the indoor filter.

[0132] The controller obtains the rotation speed Vm of the exhaust fan 500, and obtains the current air volume Fm passing through the indoor filter according to the rotation speed of the exhaust fan 500.

[0133] After obtaining the above parameters, the controller calculates the cumulative purification amount Am of the filter according to the following formula:

[0134]

[0135] Wherein, k is the mode coefficient, and dt is a time unit, which can be 5 minutes or other time units.

[0136] After each time unit, the corresponding parameters are tested and accumulated to obtain the cumulative purification amount of the filter.

[0137] Compare the calculated cumulative filter purification amount Am with the preset filter purification amount A0:

[0138] When Am≤A x When the controller controls the display component to display the normal working signal of the filter;

[0139] When A x When ≤Am≤A0, the controller controls the display to display the filter to be cleaned signal;

[0140] When Am≥A0, the controller controls the display component to display a signal indicating that the filter needs to be replaced.

[0141] After replacing the filter, the controller resets the cumulative purification volume A of the filter to zero and restarts the filter monitoring.

[0142] like Figure 5-Figure 7 As shown, in some embodiments of the present application,

[0143] The filter assembly is also provided with a filter cleaning device, which includes a driving part 610 mounted on the filter mounting member, a telescopic part 620 connected to the driving part 610 , and a cleaning part 630 connected to the end of the telescopic part 620 .

[0144] The telescopic parts 620 are located on both sides of the filter screen to avoid affecting the filtering effect of the filter element.

[0145] Since dust easily adheres to the outdoor filter, it needs to be replaced frequently. In order to reduce the replacement frequency of the outdoor filter, the filter cleaning device is mainly set on the outdoor filter.

[0146] The width of the cleaning portion 630 is adapted to the width of the filter screen. Bristles are formed on the side of the cleaning portion 630 that contacts the filter screen, and the bristles are used to sweep away dust accumulated on the outdoor filter screen.

[0147] The filter cleaning device is activated by user control. After the driving unit 610 receives the cleaning instruction issued by the user, it drives the telescopic unit 620 to extend and retract, and controls the cleaning unit 630 to move back and forth up and down along the surface of the filter, thereby starting the filter self-cleaning mode.

[0148] After cleaning is completed, the controller controls the air inlet fan 400 to reverse and output the dust cleaned by the filter to the outside, so as to prevent the cleaned dust from being blown into the room after the equipment is started.

[0149] After the filter is cleaned, the controller obtains the static pressure difference Pi detected by the static pressure difference detection element. Since there is a corresponding linear relationship between the static pressure difference on the filter and its cumulative purification amount in each air conditioner model, such as Figure 7 As shown, the basic purification amount Ai can be roughly calculated according to the current static pressure difference Pi, and the subsequent cumulative purification amount Am is calculated based on the basic purification amount.

[0150] The cumulative purification amount

[0151] Due to the serious outdoor pollutants and high dust content, the filter cleaning device is mainly installed on the outdoor filter. The filter after cleaning cannot be restored to the state before use. Therefore, there is a certain amount of dust. The service life of the filter is calculated based on the basic purification amount Ai, which is more accurate.

[0152] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0153] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A fresh air air conditioning integrated machine, characterized in that: include: An outer shell having an air duct formed thereon for air flow; A fan, which is arranged in the air duct; A filter assembly, comprising a filter screen and a filter screen mounting member, for filtering the passing airflow, wherein the filter screen is connected in the air duct via the filter screen mounting member; A collection unit, which is used to collect the concentration of pollutants in the air upstream of the filter; A static pressure difference detection member connected to the filter screen and used for detecting a static pressure difference of the filter screen corresponding to the filter screen; The controller is configured as: Used to receive the pollutant concentration C collected by the collection unit per unit time; Used to receive the static pressure difference value P detected by the static pressure difference detection element within a unit time; Control and obtain the rotation speed V of the fan per unit time, and then obtain the ventilation volume F through the filter; Obtain the cumulative running time T of the filter; The controller calculates the cumulative purification volume A of the filter within the cumulative operation time T according to the pollutant concentration C, the static pressure difference P, and the ventilation volume F per unit time; Also includes a display element, which is connected to the controller and is used to display the use status of the filter; The controller calculates the cumulative purification amount A of the filter according to the following formula: Wherein, k is the filtration efficiency of the filter screen.

2. The fresh air air conditioning integrated machine according to claim 1, characterized in that: The controller compares the calculated cumulative purification amount A with the preset value A0 and the prompt value A x Compare: When A≤A x When the controller controls the display element to display a normal working signal of the filter; When A x ≤A≤A0, the controller controls the display element to display a signal that the filter needs to be cleaned; When A≥A0, the controller controls the display element to display a signal indicating that the filter needs to be replaced.

3. The fresh air air conditioning integrated machine according to claim 1, characterized in that: After the filter is replaced, the controller resets the cumulative purification amount A of the filter to zero.

4. The fresh air air conditioning integrated machine according to claim 1, characterized in that: The filter assembly is also provided with a filter cleaning device, which includes a driving part installed on the filter mounting piece, a telescopic part connected to the driving part, and a cleaning part connected to the end of the telescopic part.

5. The fresh air air conditioning integrated machine according to claim 4, characterized in that: The telescopic parts are located on both sides of the filter screen to avoid affecting the filtering effect of the filter screen.

6. The fresh air air conditioning integrated machine according to claim 5, characterized in that: The width of the cleaning part is adapted to the width of the filter, and bristles are formed on the side of the cleaning part that contacts the filter. After receiving a cleaning instruction issued by a user, the driving part drives the telescopic part to telescope and control the cleaning part to reciprocate up and down along the surface of the filter.

7. The fresh air air conditioning integrated machine according to claim 5, characterized in that: After cleaning is completed, the controller controls the fan to reverse and output the dust cleaned by the filter.

8. The fresh air air conditioning integrated machine according to claim 7, characterized in that: After the filter is cleaned, the controller obtains the static pressure difference Pi detected by the static pressure difference detection element, and calculates the basic purification amount Ai according to the current static pressure difference Pi. The cumulative purification amount

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