WO2020192070A1

WO2020192070A1 - Air conditioner cleaning device and cleaning method, and air conditioner

Info

Publication number: WO2020192070A1
Application number: PCT/CN2019/109433
Authority: WO
Inventors: 胡宽宏; 王美; 梁义庚; 黄锦伦; 金海元; 王朝新; 陈圣文
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-03-26
Filing date: 2019-09-30
Publication date: 2020-10-01
Also published as: CN109945313B; EP3879192B1; CN109945313A; EP3879192A1; EP3879192A4

Abstract

Disclosed is an air conditioner cleaning device, comprising a fresh air ventilator (1). The fresh air ventilator (1) can be used for conveying fresh air into a room and for supplying air to a heat exchanger of an air conditioner. The device can be used for the self-cleaning of an outdoor heat exchanger, and has a high cleaning efficiency and a good cleaning effect. The fresh air ventilator selectively introduces air in a double-channel manner, and makes full use of the temperature difference between indoor air and outdoor air to accelerate frosting and defrosting processes, thereby improving the self-cleaning efficiency of an air conditioner. On the basis of the fresh air ventilator, humidification and cooling of a frosting airflow and heating of a defrosting airflow are realized, thereby accelerating frosting and defrosting processes and improving the self-cleaning efficiency of an air conditioner. The device can be used for the self-cleaning of an indoor heat exchanger and an outdoor heat exchanger simultaneously and is fully functional.

Description

Air conditioner cleaning device, cleaning method and air conditioner

Related application

This application claims the priority of the Chinese patent application filed on March 26, 2019, with the application number 201910233484.7, titled "Air Conditioner Cleaning Device, Cleaning Method, and Air Conditioner", which is hereby incorporated by reference in its entirety.

Technical field

This application belongs to the technical field of air conditioner cleaning, and specifically relates to an air conditioner cleaning device, cleaning method, and air conditioner.

Background technique

During the long-term use of the air conditioner, a large amount of dust and pollutants will accumulate, causing the heat exchange performance of the air conditioner heat exchanger and other components to decline, and even aggravating corrosion and aging, causing permanent damage to the components. In household air conditioners, pollutants accumulated after long-term operation of the heat exchange system can breed various microorganisms, emit peculiar smells, and even harmful ingredients, which seriously affect physical and mental health.

The existing air conditioner cleaning method is to achieve the cleaning of the air conditioner by condensation-defrosting, but the condensation process is mainly completed by condensing the water vapor in the indoor air. When the air conditioner is running in a dry environment, there is less moisture in the air. , Can not meet the water demand for condensation, resulting in slow condensation speed, and the cleaning function of the air conditioner is restricted.

When the existing air conditioner indoor unit is cleaned, during the frosting process, the air conditioner operates in the cooling mode, and the indoor heat exchanger absorbs heat. The moisture in the air condenses and frosts on the surface of the indoor heat exchanger. During this process, the frosted air is condensed. The circulating air is directly taken from the air conditioner itself. The circulating air is the indoor circulating air. However, in winter, the indoor air temperature is higher than that of the outdoor. The direct blowing of high-temperature wind will reduce the rate of frosting and even reduce the frost on the surface of the indoor heat exchanger. The ice melted and fell off. During the defrosting process, the air conditioner switches to heating mode, and the indoor heat exchanger dissipates heat and melts the frost on its surface. However, in summer, the indoor air temperature is lower than that of the outdoors, and low temperature wind blowing in will reduce the defrosting rate, even Freeze the frost again.

Therefore, the prior art air conditioner cleaning device has a problem of low cleaning efficiency.

Summary of the invention

Therefore, in order to solve the technical problem of low cleaning efficiency of the existing air conditioner, the present application provides an air conditioner cleaning device, a cleaning method, and an air conditioner.

In order to solve the above problems, the present application provides an air conditioner cleaning device. The air conditioner includes a heat exchanger, and the air conditioner cleaning device includes:

Fresh air blower, the fresh air blower can deliver fresh air to the room, and can send air to the heat exchanger.

The purpose of this application and the solution of its technical problems can be further realized by the following technical measures.

In an embodiment, the heat exchanger includes an indoor heat exchanger, and the fresh air blower can be used to blow air to the indoor heat exchanger.

In one embodiment, the fresh air fan is provided with a fresh air channel and an air outlet channel, and the fresh air fan has at least the following working modes:

After the air enters the new fan through the fresh air channel, it flows through the air outlet channel and is transported to the indoor heat exchanger.

In an embodiment, the fresh air duct is connected with an outdoor fresh air pipe and/or a first indoor return air pipe; the outdoor fresh air pipe is connected to the outside and is used to introduce fresh air from the outside, and the first indoor return air pipe is connected to the room and is used for Introduce return air from the room.

In an embodiment, the air conditioner cleaning device further includes a humidifying component, and the humidifying component is used to increase the humidity of the fresh air blower to the indoor heat exchanger.

In one embodiment, the humidifying component includes a humidifying device and a water storage tank, the humidifying device is arranged in the fresh air passage, the humidifying device is used to increase the humidity of the air flowing through the fresh air passage, and the water storage tank is used to provide a water source to the humidifying device.

In an embodiment, the humidifying device includes any one or more of a humidifying membrane, a permeable membrane, and an atomizer.

In an embodiment, the air conditioner further includes a water receiving tray, and the air outlet passage runs through the water receiving tray to supply air to the indoor heat exchanger.

In one embodiment, a waterproof baffle is provided in the water receiving pan, and the waterproof baffle is used to prevent condensed water from entering the air outlet channel.

In an embodiment, the waterproof baffle is installed above the air outlet channel through a supporting column.

In one embodiment, the edge of the air outlet channel is also provided with a water retaining edge protruding from the bottom of the water receiving tray.

In one embodiment, the drain pan is provided with a drain hole and an overflow hole; the drain hole is connected to the drain pipe.

In an embodiment, the end of the drain pipe includes a water storage tank drain pipe, the water storage tank drain pipe is connected to the water storage tank, and the water storage tank drain pipe injects the condensed water in the water receiving tray into the water storage tank.

In an embodiment, the end of the drain pipe further includes an outdoor drain pipe, the outdoor drain pipe is connected to the outdoors, and the outdoor drain pipe drains the condensed water in the drain pan to the outdoors.

In one embodiment, the drain pipe is provided with a drain solenoid valve, and the drain solenoid valve controls whether the condensed water in the drain pan flows into the water storage tank drain pipe and/or the outdoor drain pipe.

In one embodiment, a filter purification device is provided on the drain pipe of the water storage tank, and the filter purification device filters the condensed water.

In an embodiment, the water storage tank is also provided with an artificial water injection port, which is used to add water to the water storage tank.

In one embodiment, the auxiliary temperature adjustment component is further included, and the auxiliary temperature adjustment component is arranged in the fresh air passage for adjusting the temperature of the air flowing through the fresh air passage.

In an embodiment, the auxiliary temperature adjustment component includes one or two of a semiconductor refrigeration chip and an electric heating element.

In an embodiment, the air conditioner further includes an outdoor heat exchanger, and the fresh air blower is also provided with an exhaust air passage, which is used for the fresh air blower to supply air to the outdoor heat exchanger.

In one embodiment, the fresh air fan is provided with a mounting box, the fresh air channel and the exhaust air channel are arranged in the mounting box, and the fresh air channel and the exhaust air channel are separated by a fixed partition.

In one embodiment, the semiconductor refrigeration fins are arranged on the fixed partitions, and the two ends of the semiconductor refrigeration fins are respectively placed in the fresh air channel and the exhaust channel; after the semiconductor refrigeration fin is energized, one end cools and the other end heats; the direction of the current is changed, The cooling end and the heating end are interchanged.

In one embodiment, the fresh air blower is also provided with an exhaust duct, the fresh air duct is connected with a fresh air duct, the fresh air duct is connected to the outside, and the exhaust duct is connected with a second indoor return duct and an exhaust duct, and the second indoor return air The air inlet of the pipe is connected to the room, the air outlet of the second indoor return air pipe is connected to the fresh air channel, and the exhaust pipe is connected to the outdoor heat exchanger to supply air to the outdoor heat exchanger.

In an embodiment, the fresh air channel and the exhaust air channel are arranged in the installation box and separated by a movable partition; the movable partition is opened, the fresh air channel is connected with the exhaust channel, and the indoor air passes through the second indoor return air duct, The exhaust passage enters the fresh air passage, the movable partition is closed, the fresh air passage is separated from the exhaust passage, and the indoor air is discharged to the outside through the second indoor return duct, exhaust duct, and exhaust duct.

A cleaning method is implemented using the above-mentioned air conditioner cleaning device.

In an embodiment, when the heat exchanger includes an indoor heat exchanger, it includes:

Receive cleaning instructions;

Frosting process: The air conditioner is running in the cooling mode and enters the frosting process of the indoor heat exchanger; the fresh air blower is running to send air to the indoor heat exchanger to accelerate the frosting of the indoor heat exchanger;

Defrosting process: The air conditioner runs under heating conditions and enters the defrosting process of the indoor heat exchanger; the fresh air blower operates to send air to the indoor heat exchanger to speed up the defrosting of the indoor heat exchanger.

Receive cleaning instructions;

Defrosting process: The air conditioner is running under heating conditions to defrost the indoor heat exchanger.

Receive cleaning instructions;

Frosting process: the air conditioner is running under refrigerating conditions to frost the indoor heat exchanger;

In one embodiment, the cleaning method further includes: during the frosting process, the humidifying component is operated to increase the humidity of the fresh air blower.

In one embodiment, during the frosting process, the fresh air blower operates and the steps of supplying air to the indoor heat exchanger include:

Compare the indoor temperature T _inside with the outdoor temperature T _outside ;

When T _inside > T _outside , the new fan introduces fresh air from outside through the outdoor fresh air duct;

When T _inside ≤ T _outside , the fresh air blower introduces return air from the room through the first indoor return air duct or the second indoor return air duct.

In one embodiment, during the defrosting process, the fresh air blower is running and the steps of supplying air to the indoor heat exchanger include:

When T _inside ≤ T _outside , the new fan introduces fresh air from outside through the outdoor fresh air duct;

When T _inside > T _outside , the fresh air blower introduces return air from the room through the first indoor return air duct or the second indoor return air duct.

In an embodiment, the cleaning method further includes: during the frosting process, starting the auxiliary temperature adjustment component to reduce the temperature of the fresh air blower to the indoor heat exchanger.

In an embodiment, the cleaning method further includes: during the defrosting process, starting the auxiliary temperature adjustment component to increase the temperature of the fresh air blower to the indoor heat exchanger.

An air conditioner adopts the above-mentioned air conditioner cleaning device.

The air conditioner cleaning device, cleaning method, and air conditioner provided in this application have at least the following beneficial effects:

1. This application can be used for the self-cleaning of outdoor heat exchangers. It adopts the form of frosting and defrosting to clean the surface of the heat exchanger and automatically cleans. It has no loss to equipment, high cleaning efficiency and good cleaning effect.

2. The dual-channel selective air induction of the fresh air blower makes full use of the temperature difference between indoor and outdoor air. When frosting, choose lower temperature air and when defrosting, choose higher temperature air to speed up the frosting and defrosting process and improve the air conditioner's performance. Self-cleaning efficiency.

3. On the basis of the fresh air blower, the humidification and cooling of the frosting airflow and the heating of the defrosting airflow are realized, which can speed up the frosting and defrosting process and improve the self-cleaning efficiency of the air conditioner.

4. It can be used for self-cleaning of indoor heat exchanger and outdoor heat exchanger at the same time, with complete functions.

Description of the drawings

Figure 1 is a schematic structural diagram of a cleaning device for an air conditioner according to Embodiment 1 of the application;

2 is a schematic diagram of a partial structure of a cleaning device for an air conditioner according to Embodiment 1 of the application;

3 is a schematic structural diagram of a cleaning device for an air conditioner according to Embodiment 2 of the application;

4 is a schematic structural diagram of an outdoor heat exchanger of an air conditioner cleaning device according to an embodiment of the application;

5 is a schematic diagram of the structure of the water receiving tray of the air conditioner cleaning device according to the embodiment of the application;

6 is a schematic diagram of the structure of the water receiving tray and the indoor evaporator of the air conditioner cleaning device according to the embodiment of the application.

The reference signs are indicated as:

1. Fresh air fan; 2. Indoor heat exchanger; 3. Humidification components; 4. Fresh air channel; 5. Air outlet channel; 6. Outdoor fresh air duct; 7. First indoor return air duct; 8. Water storage tank; 9. 10. Humidification device; 10. Drain tray; 11. Drain pipe; 12. Drain pipe of water storage tank; 13. Outdoor drain pipe; 14. Auxiliary temperature adjustment components; 15. Outdoor heat exchanger; 16. Exhaust channel; 17, The second indoor return air pipe; 18, exhaust pipe; 19, movable partition; 20, installation box; 21, fixed partition; 22, waterproof baffle; 23, support column; 24, water retaining edge; 25, Drain hole; 26, overflow hole; 27, arc-shaped indoor heat exchanger; 28, long trough-type air outlet.

detailed description

In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The drawings show preferred embodiments of the application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive.

Example one

With reference to Figures 1, 2, and 4, an air conditioner cleaning device is provided in Embodiment 1 of the present application. The air conditioner includes a heat exchanger, and the air conditioner cleaning device includes a fresh air blower 1, which can deliver fresh air to the room. And can send air to the heat exchanger.

The air conditioner cleaning device of this embodiment adopts the form of frosting and defrosting to perform self-cleaning of the air conditioner heat exchanger. The cleaning device of this embodiment uses a fresh air blower to supply air during the frosting and defrosting process of the heat exchanger, and does not rely on the air circulation circuit of the air conditioner itself. The fresh air blower can choose to draw air from indoor or outdoor to create more favorable conditions for the frosting or defrosting of the heat exchanger, thereby improving the quality and efficiency of the frosting and defrosting of the heat exchanger, and improving the self-cleaning of the heat exchanger Effect and efficiency. At the same time, air supply through the new fan is more conducive to humidification and temperature adjustment of frosting or defrosting wind, and further improving the quality and efficiency of frosting and defrosting.

In this embodiment, the heat exchanger includes an indoor heat exchanger 2 (ie, an evaporator), and the fresh fan 1 can blow air to the indoor heat exchanger 2. The air conditioner cleaning device is used for self-cleaning of the indoor heat exchanger 2.

The fresh air blower 1 is provided with a fresh air passage 4 and an air outlet passage 5. The fresh air passage 4 is used for the fresh air blower 1 to enter air, and the air outlet passage 5 is used for the fresh air blower 1 to send air to the indoor heat exchanger 2. The fresh air blower 1 has at least the following working modes: air enters the fresh air blower 1 through the fresh air passage 4, and then flows through the air outlet passage 5 to be transported to the indoor heat exchanger 2, and the air can enter the room after passing through the indoor heat exchanger 2.

As a new equipment in the field of air conditioning, fresh air fans are often used for air purification independent of air conditioners. They can circulate indoor air, maximize indoor air replacement, and make up for the inability of ordinary air conditioners to introduce fresh air into the room. . The fresh air blower 1 of this embodiment introduces air into the fresh air passage 4 and then blows the air to the indoor heat exchanger 2 from the air outlet passage 5. The air conditioner may further include a water receiving pan 10, which is used for collecting and storing condensed water generated during normal operation of the heat exchanger of the air conditioner. The air outlet channel 5 can penetrate the water receiving tray 10 to send air to the indoor heat exchanger 2. The edge of the air outlet channel 5 is provided with a leak-proof structure to prevent the condensed water in the drain pan 10 from leaking into the fresh fan 1.

In this embodiment, the fresh air duct 4 is connected with an outdoor fresh air pipe 6 and/or a first indoor return air pipe 7; the outdoor fresh air pipe 6 is connected to the outside and is used to introduce fresh air from outside, and the first indoor return air pipe 7 is connected Indoor, used to introduce return air from indoor. The fresh air passage 4 is the air inlet of the fresh air blower 1, and the outdoor fresh air duct 6 and the first indoor return air duct 7 are the two air introduction directions.

The frosting of indoor heat exchanger 2 is not only affected by air humidity, but also by air temperature. High air temperature is not conducive to frosting, and even high-temperature air will delay the frosting process and blow the frost layer on the surface of the heat exchanger. Change, blow off. On the contrary, low air temperature is not conducive to defrosting. Therefore, in this embodiment, the suitability of the ambient temperature is fully considered. The fresh air blower 1 is provided with two indoor and outdoor air inlets, and it is possible to determine which side to draw air from according to the indoor and outdoor ambient temperature and air humidity.

The air conditioner cleaning device in this embodiment also includes a humidifying component 3 for increasing the humidity of the air supplied by the fresh air blower 1. The moisture in the air blown to the indoor heat exchanger 2 increases, and the surface condensation of the indoor heat exchanger 2 increases, which can accelerate the indoor Frosting of heat exchanger 2. The humidifying component 3 includes a humidifying device 9 and a water storage tank 8. The humidifying device 9 is installed in the fresh air passage 4. The humidifying device 9 includes any one or more of a humidifying membrane, a permeable membrane, and an atomizer. The humidifying device 9 is used to increase the humidity of the air flowing through the fresh air passage 4, and the water storage tank 8 is used to provide a water source to the humidifying device 9. The water storage tank 8 can be made into two water supply modes: internal circulation water supply and external injection water supply.

The internal circulation water supply mode relies on the condensate dripping from the heat exchanger. Please also refer to FIG. 5. In the air conditioner, a water receiving tray 10 is arranged under the indoor heat exchanger 2, and the air outlet channel 5 penetrates the water receiving tray 10 to supply air to the indoor heat exchanger 2.

A waterproof baffle 22 is provided in the water receiving tray 10, and the waterproof baffle 22 is used to prevent condensation water from entering the air outlet channel 5. Optionally, the waterproof baffle 22 is installed above the air outlet channel 5 through the supporting column 23, and the condensation water on the surface of the indoor heat exchanger 2 falls on the waterproof baffle 22. The waterproof baffle 22 can be set with a slope with one side high and the other low. , Easy to drain.

In one embodiment, the edge of the air outlet channel 5 is also provided with a water retaining edge 24 protruding from the bottom of the water receiving tray 10. The water retaining edge 24 can prevent the water in the water receiving tray 10 from pouring into the air outlet channel 5. A drain hole 25 and an overflow hole 26 are also provided inside the water receiving tray 10; the drain hole 25 is connected to the drain pipe 11, and the condensed water is recovered to the water storage tank 8 or directly discharged outdoors. The overflow hole 26 is used to drain the condensed water when the drain hole 25 is blocked, and its drain is set higher than the drain hole 25 so that the condensed water enters the drain hole 25 preferentially.

The end of the drain pipe 11 includes a water storage tank drain pipe 12, the water storage tank drain pipe 12 is connected to the water storage tank 8, and the water storage tank drain pipe 12 injects the condensed water in the water receiving tray 10 into the water storage tank 8. The end of the drain pipe 11 also includes an outdoor drain pipe 13, which is connected to the outdoors, and the outdoor drain pipe 13 drains the condensed water in the drain pan 10 to the outside. The drain pipe 11 is provided with a drain solenoid valve. The drain solenoid valve controls whether the condensed water in the drain pan 10 flows into the water storage tank drain pipe 12 and/or the outdoor drain pipe 13. The drain solenoid valve preferentially controls the condensate water to pass through the water storage tank drain pipe 12 The water storage tank 8 is injected, and when the water storage tank 8 is full, the drain solenoid valve controls the condensed water to stop flowing into the water storage tank drain pipe 12, and instead flows to the outdoors through the outdoor drain pipe 13.

In this embodiment, the air outlet channel 5 is a rectangular opening, the indoor heat exchanger 2 has a rectangular plate shape, and the air outlet channel 5 may have a rectangular, circular, square, long trough shape, and the like. Please refer to Figure 6, the indoor heat exchanger 2 can be an arc-shaped arc-shaped indoor heat exchanger 27, the air outlet channel 5 adopts a long trough-type air outlet 28, and the arc-shaped indoor heat exchanger 27 is vertically arranged in the water receiving tray 10 The air outlet channel 5 is not within the dripping range of the condensed water of the arc-shaped indoor heat exchanger 27, and only a water retaining edge 24 is provided around the air outlet channel 5 to prevent the entry of condensate water.

In order to prevent the cleaning of the water storage tank and the blockage of the pipeline, a filter purification device is provided on the water storage tank drain pipe 12. The filter purification device filters the condensate water. The condensate water injected into the water storage tank 8 is purified and can be passed through the display module and program Set a timing to remind users to clean the filter purification device.

In the external water supply mode, the water storage tank 8 is provided with an artificial water injection port, which is used to add water to the water storage tank 8. The water storage tank 8 can also be designed as a detachable structure, and the water storage tank 8 can be removed when filling water.

The water storage tank 8 can also comprehensively use the above two water supply modes. Further, a water volume sensor may be provided in the water storage tank 8 to detect the water volume in the water storage tank 8, and send a control signal according to the water volume result to control the drainage solenoid valve to replenish water, or to remind manual water injection.

In this embodiment, in order to regulate the temperature of the air supplied by the fresh air blower 1, the cleaning device further includes an auxiliary temperature adjustment assembly 14 which is arranged in the fresh air passage 4 and is used for the temperature of the air flowing through the fresh air passage 4. The auxiliary temperature adjustment component 14 includes one or two of semiconductor refrigeration fins and electric heating elements.

Considering that the air conditioner also includes an outdoor heat exchanger 15 (ie, a condenser), the cleaning device of this embodiment can also be improved as follows while realizing self-cleaning of the outdoor heat exchanger 15.

Specifically, the fresh air blower 1 is further provided with an exhaust air passage 16 which is used for the fresh air blower 1 to send air to the outdoor heat exchanger 15. The air inlet of the fresh air blower 1 is provided with a mounting box 20. The fresh air channel 4 and the exhaust air channel 16 are both arranged in the mounting box. The fresh air channel 4 and the exhaust air channel 16 are separated by a fixed partition 21, and the fresh air channel 4 and the exhaust air The channels 16 do not communicate with each other. Corresponding humidification components 3 and auxiliary temperature adjustment components 14 can also be arranged in the exhaust duct 16 to increase the humidity of the frosting wind of the outdoor heat exchanger 15, reduce the temperature of the frosting wind, accelerate the frosting of the outdoor heat exchanger 15, or increase The temperature of the defrosting wind speeds up the defrosting of the outdoor heat exchanger 15.

In this embodiment, the semiconductor refrigeration sheet is arranged on the fixed partition 21, and the two ends of the semiconductor refrigeration sheet are respectively placed in the fresh air channel 4 and the exhaust channel 16; according to the characteristics of the semiconductor refrigeration sheet (that is, the semiconductor material Tie effect). After the semiconductor refrigeration chip is energized, one end is cooled and the other end is heated; changing the direction of the current, the cooling end and the heating end are interchanged.

When the indoor heat exchanger 2 is frosted, the semiconductor refrigeration fins in the fresh air channel 4 cool, and the fresh air temperature is reduced; when defrosting, the current direction of the semiconductor refrigeration fins changes, and the semiconductor refrigeration fins heat; similarly, the outdoor heat exchanger 15 is frosted When the semiconductor refrigeration fins cool, when defrosting, the semiconductor refrigeration fins heat.

The air conditioner self-cleaning device of this embodiment uses a fresh air blower to achieve selective air induction, achieves high-efficiency frosting and defrosting with minimal energy consumption, improves the cleaning efficiency of the air conditioner, and has a shorter cleaning cycle. With the help of fresh air blowers, the indoor heat exchanger and outdoor heat exchanger can be cleaned at the same time. The humidification component increases the air humidity to improve the frosting efficiency, and the indoor unit condensate is recycled and humidified to accelerate the frosting.

Example two

In the structure of the existing fresh air blower 1, the air intake on the indoor side can be designed in the exhaust system, and the air exhaust system directly removes the indoor air from the outdoors. The existing structure of the fresh air blower 1 can be fully utilized to realize the fresh air blower 1 from the room. Of the wind. Referring to Fig. 3, the fresh air blower 1 of the second embodiment of the present application is further provided with an exhaust air duct 16, the fresh air duct 4 is connected to an outdoor fresh air duct 6, the outdoor fresh air duct 6 is connected to the outdoors, and the fresh air duct 1 passes through the outdoor fresh air duct 6 Introduce fresh air from outside. The exhaust channel 16 is connected with a second indoor return air pipe 17 and an exhaust pipe 18. The air inlet of the second indoor return air pipe 17 is connected to the room, and the air outlet is connected to the fresh air channel 4, and the second indoor return air pipe 17 can The indoor air is introduced into the fresh air blower 1; the exhaust pipe 18 is connected to the outdoor heat exchanger 15 to supply air to the outdoor heat exchanger 15. The fresh air passage 4 and the exhaust air passage 16 are arranged in the installation box and separated by a movable partition 19; the movable partition 19 is opened, the fresh air passage 4 and the exhaust passage 16 are connected, and the indoor air passes through the second indoor return air duct 17 , The exhaust air passage 16 enters the fresh air passage 4, the movable partition 19 is closed, the fresh air passage 4 is separated from the exhaust passage 16, and the indoor air is discharged to the outside through the second indoor return duct 17, the exhaust duct 16, and the exhaust duct 18. .

The outdoor fresh air pipe 6, the first indoor return air pipe 7, the second indoor return air pipe 17, and the exhaust air pipe 18 in the first and second embodiments can all be equipped with electromagnetic valves to control on and off.

The air conditioner cleaning device of this embodiment uses the existing structure of the fresh air blower to controllably connect the fresh air channel and the exhaust air channel through a movable structure, which can realize the cleaning work of the indoor heat exchanger and the outdoor heat exchanger without causing problems. Destroy the structure of the new fan to ensure the realization of the inherent performance of the new fan.

The present application also provides a cleaning method using the above-mentioned air conditioner cleaning device.

In the optimal solution, when the heat exchanger includes the indoor heat exchanger 2, the cleaning method includes:

Step one is to receive a cleaning instruction; the cleaning instruction can be issued by manual control, or it can be issued periodically after the air conditioner autonomously monitors the operating time. When cleaning the indoor unit, you need to adjust the air deflector in advance to avoid direct blowing on the human body.

Step two, frosting process: control the air conditioner to run in the cooling mode and enter the frosting process of the indoor heat exchanger 2. At this time, the surface temperature of the indoor heat exchanger 2 is below zero, and the moisture in the air condenses on its surface;

Control the operation of fresh air blower 1 and supply air to indoor heat exchanger 2; compare indoor temperature T _inside with outdoor temperature T _outside ;

When T _inside > T _outside , such as in winter, the fresh air blower 1 introduces fresh air from the outside through the outdoor fresh air duct 6.

When T _inside ≤ T _outside , such as summer, the fresh air blower 1 introduces return air from the room through the first indoor return air duct 7 or the second indoor return air duct 17.

At the same time, the humidifying component 3 operates to increase the humidity of the air supplied by the fresh air blower 1, and the auxiliary temperature adjustment component 14 is activated to reduce the temperature of the air supplied by the fresh air machine 1 and accelerate the frosting of the indoor heat exchanger 2.

Step three, check the frosting result. The frosting result can be judged by detecting the temperature of the inner tube of the indoor heat exchanger 2 or monitoring the cooling operation time. Specifically, the inner tube temperature reaches the lower limit temperature of frosting, such as -18℃～20℃, or the cooling operation time reaches the set time , Such as 180s, when the above conditions are reached, it can be judged that the frosting is complete.

Step four, defrosting process: the air conditioner runs under heating conditions and enters the defrosting process of the indoor heat exchanger 2; when cleaning the indoor unit, the air deflector needs to be adjusted in advance to avoid direct blowing on the human body.

The fresh air blower 1 runs and sends air to the indoor heat exchanger 2 to accelerate the defrosting of the indoor heat exchanger 2, and compare the indoor temperature T _inside with the outdoor temperature T _outside ;

When T _inside ≤ T _outside , such as summer, fresh air blower 1 introduces fresh air from outside through outdoor fresh air duct 6;

When T _inside > T _outside , such as in winter, the fresh air blower 1 introduces return air from the room through the first indoor return air duct 7 or the second indoor return air duct 17.

At the same time, the auxiliary temperature adjustment component 14 is activated to increase the temperature of the air supplied by the fresh fan 1. The defrosting process can also be judged by detecting the temperature of the inner tube or monitoring the heating running time. Specifically, the inner tube temperature reaches the upper defrosting temperature of 50°C or the heating running time is 360 to 600s.

In the cleaning method of this embodiment, the fresh air blower may only participate in one of the processes of frosting or defrosting, or may participate in both processes of frosting or defrosting.

The cleaning method of this embodiment can use the air conditioner cleaning device of the present application to realize the cleaning of indoor heat exchangers or indoor heat exchangers, with high cleaning efficiency, energy saving and environmental protection.

An air conditioner adopts the air conditioner cleaning device of the present application.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express a few implementation modes of the present application, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the patent application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

An air conditioner cleaning device, which includes a heat exchanger, characterized in that the air conditioner cleaning device includes:

The fresh air blower (1) can deliver fresh air to the room and can blow air to the heat exchanger.
The air conditioner cleaning device according to claim 1, wherein the heat exchanger comprises an indoor heat exchanger (2), and the fresh air blower (1) can send air to the indoor heat exchanger (2) .
The air conditioner cleaning device according to claim 2, characterized in that, the fresh air fan (1) is provided with a fresh air channel (4) and an air outlet channel (5), and the fresh air fan (1) has at least the following working modes :

The air enters the fresh air blower (1) through the fresh air passage (4), and then flows through the air outlet passage (5) and is transported to the indoor heat exchanger (2).
The air conditioner cleaning device according to claim 3, wherein the fresh air passage (4) is connected with an outdoor fresh air pipe (6) and/or a first indoor return air pipe (7); The air duct (6) is connected to the outdoors and used for introducing fresh air from the outside, and the first indoor return air pipe (7) is connected to the room and used for introducing return air from the room.
The air conditioner cleaning device according to claim 2, characterized in that it further comprises a humidifying component (3), the humidifying component (3) is used to add the fresh air blower (1) to the indoor heat exchanger (2) ) The humidity of the supply air.
The air conditioner cleaning device according to claim 5, characterized in that the humidification component (3) comprises a humidification device (9) and a water storage tank (8), and the humidification device (9) is arranged in the fresh air passage ( In 4), the humidification device (9) is used to increase the humidity of the air flowing through the fresh air channel (4), and the water storage tank (8) is used to provide a water source for the humidification device (9).
The air conditioner cleaning device according to claim 6, characterized in that the humidifying device (9) comprises any one or more of a humidifying membrane, a permeable membrane, and an atomizer.
The air conditioner cleaning device according to any one of claims 1-7, wherein the air conditioner further comprises a water receiving tray (10), and the air outlet channel (5) penetrates the water receiving tray (10) Air is sent to the indoor heat exchanger (2).
The air conditioner cleaning device according to claim 8, characterized in that a waterproof baffle (22) is provided in the water receiving tray (10), and the waterproof baffle (22) is used to prevent condensed water from entering the Air outlet channel (5).
The air conditioner cleaning device according to claim 9, characterized in that the waterproof baffle (22) is installed above the air outlet channel (5) through a supporting column (23).
The air conditioner cleaning device according to claim 9, characterized in that the edge of the air outlet channel (5) is further provided with a water retaining edge (24) protruding from the bottom of the water receiving tray (10).
The air conditioner cleaning device according to any one of claims 9-11, wherein the water receiving tray (10) is provided with a drain hole (25) and an overflow hole (26); the drain hole (25) Connect the drain pipe (11).
The air conditioner cleaning device according to any one of claims 12, wherein the end of the drain pipe (11) comprises a water storage tank drain pipe (12), the water storage tank drain pipe (12) and the water storage tank (8) Connection, the water storage tank drain pipe (12) injects the condensed water in the water receiving pan (10) into the water storage tank (8).
The air conditioner cleaning device according to claim 13, wherein the end of the drain pipe (11) further comprises an outdoor drain pipe (13), the outdoor drain pipe (13) is connected to the outdoors, and the outdoor drain The pipe (13) discharges the condensed water in the water receiving pan (10) to the outside.
The air conditioner cleaning device according to claim 14, wherein the drain pipe (11) is provided with a drain solenoid valve, and the drain solenoid valve controls whether the condensed water in the drain pan (10) flows into the storage Water tank drain pipe (12), and/or outdoor drain pipe (13).
The air conditioner cleaning device according to claim 13, characterized in that a filter purification device is provided on the water storage tank drain pipe (12), and the filter purification device filters the condensed water.
The air conditioner cleaning device according to claim 13, characterized in that, the water storage tank (8) is further provided with an artificial water injection port, and the artificial water injection port is used for adding water to the water storage tank (8).
The air conditioner cleaning device according to any one of claims 1-7, 9-11, 13-17, further comprising an auxiliary temperature adjustment component (14), and the auxiliary temperature adjustment component (14) is arranged in the The fresh air passage (4) is used to adjust the temperature of the air flowing through the fresh air passage (4).
The air conditioner cleaning device according to claim 18, wherein the auxiliary temperature adjustment component (14) comprises one or two of a semiconductor refrigeration chip and an electric heating element.
The air conditioner cleaning device according to claim 18, wherein the air conditioner further comprises an outdoor heat exchanger (15), the fresh air blower (1) is also provided with an exhaust channel (16), and the exhaust The air channel (16) is used for the fresh fan (1) to send air to the outdoor heat exchanger (15).
The air conditioner cleaning device according to claim 20, characterized in that a mounting box (20) is provided on the fresh air blower (1), and the fresh air passage (4) and the exhaust air passage (16) are arranged in the In the installation box (20), the fresh air passage (4) and the exhaust air passage (16) are separated by a fixed partition (21).
The air conditioner cleaning device according to claim 21, characterized in that the semiconductor refrigeration fin is arranged on the fixed partition (21), and both ends of the semiconductor refrigeration fin are respectively arranged in the fresh air passage (4). ) And the exhaust channel (16); one end of the semiconductor refrigerating fin is energized for cooling and the other end for heating; in response to a change in the direction of the current, the cooling end and the heating end of the semiconductor refrigeration fin can be interchanged.
The air conditioner cleaning device according to claim 3, characterized in that the fresh air blower (1) is also provided with an exhaust air passage (16); the fresh air passage (4) is connected with an outdoor fresh air pipe (6), The outdoor fresh air duct (6) is connected to the outdoors, the exhaust duct (16) is connected with a second indoor return air duct (17) and an exhaust duct (18), and the second indoor return air duct (17) The air inlet of the second indoor air return pipe (17) is connected to the fresh air passage (4), and the exhaust pipe (18) is connected to the outdoor heat exchanger (15), Air is sent to the outdoor heat exchanger (15).
The air conditioner cleaning device according to claim 23, characterized in that the fresh air channel (4) and the exhaust air channel (16) are arranged in the installation box (20) and separated by a movable partition (19); The movable partition (19) is opened, the fresh air passage (4) is in communication with the exhaust passage (16), and indoor air passes through the second indoor return air duct (17) and the exhaust passage (16) Enter the fresh air passage (4), the movable partition (19) is closed, the fresh air passage (4) is separated from the exhaust passage (16), and indoor air passes through the second indoor return air duct (17) The exhaust channel (16) and the exhaust pipe (18) are exhausted to the outside.
A cleaning method, characterized in that it is implemented using the air conditioner cleaning device of any one of claims 1-24.
The cleaning method according to claim 25, characterized in that, when the heat exchanger comprises an indoor heat exchanger (2), it comprises:

Receive cleaning instructions;

Frosting process: The air conditioner is running under cooling conditions and enters the frosting process of the indoor heat exchanger (2); the fresh air blower (1) runs to send air to the indoor heat exchanger (2) to speed up the indoor heat exchanger (2)的frosting

Defrosting process: the air conditioner is running under heating conditions and enters the defrosting process of the indoor heat exchanger (2); the fresh air blower (1) runs to send air to the indoor heat exchanger (2) to speed up the indoor heat exchanger (2) ) Of defrosting.
The cleaning method according to claim 25, characterized in that, when the heat exchanger comprises an indoor heat exchanger (2), it comprises:

Receive cleaning instructions;

Frosting process: The air conditioner is running under cooling conditions and enters the frosting process of the indoor heat exchanger (2); the fresh air blower (1) runs to send air to the indoor heat exchanger (2) to speed up the indoor heat exchanger (2)的frosting

Defrosting process: the air conditioner is running under heating conditions to defrost the indoor heat exchanger (2).
The cleaning method according to claim 25, characterized in that, when the heat exchanger comprises an indoor heat exchanger (2), it comprises:

Receive cleaning instructions;

Frosting process: the air conditioner is running under refrigerating conditions and frosting of the indoor heat exchanger (2);

Defrosting process: the air conditioner is running under heating conditions and enters the defrosting process of the indoor heat exchanger (2); the fresh air blower (1) runs to send air to the indoor heat exchanger (2) to speed up the indoor heat exchanger (2) ) Of defrosting.
The cleaning method according to any one of claims 25-27, characterized in that the cleaning method further comprises: during the frosting process, the humidifying component (3) operates to increase the humidity of the air supplied by the fresh air blower (1).
The cleaning method according to claim 26 or 27, characterized in that, during the frosting process, the fresh air blower (1) is operated and the step of sending air to the indoor heat exchanger (2) comprises:

Compare the indoor temperature T inside with the outdoor temperature T outside ;

When T inside > T outside , the fresh air blower (1) introduces fresh air from outside through the outdoor fresh air duct (6);

When T inside ≤ T outside , the fresh air blower (1) introduces return air from the room through the first indoor return air pipe (7) or the second indoor return air pipe (17).
The cleaning method according to claim 26 or 28, characterized in that, during the defrosting process, the step of operating the fresh air blower (1) to supply air to the indoor heat exchanger (2) comprises:

Compare the indoor temperature T inside with the outdoor temperature T outside ;

When T inside ≤ T outside , the fresh air blower (1) introduces fresh air from outside through the outdoor fresh air duct (6);

When T inside > T outside , the fresh air blower (1) introduces return air from the room through the first indoor return air duct (7) or the second indoor return air duct (17).
The cleaning method according to any one of claims 25-28, characterized in that, the cleaning method further comprises: during the frosting process, starting the auxiliary temperature adjustment assembly (14) to reduce the flow of the fresh air blower (1) to the indoor heat exchanger (2) ) The temperature of the supply air.
The cleaning method according to any one of claims 25-28, characterized in that the cleaning method further comprises: during the defrosting process, starting the auxiliary temperature adjustment assembly (14) to increase the flow of the fresh air blower (1) to the indoor heat exchanger (2) ) The temperature of the supply air.
An air conditioner, characterized by comprising the air conditioner cleaning device according to any one of claims 1-24.