WO2020073648A1

WO2020073648A1 - Air conditioner indoor unit

Info

Publication number: WO2020073648A1
Application number: PCT/CN2019/086633
Authority: WO
Inventors: 朱振学; 庄佳兰; 董元伟
Original assignee: 青岛海尔空调器有限总公司
Priority date: 2018-10-09
Filing date: 2019-05-13
Publication date: 2020-04-16
Also published as: CN111023273A

Abstract

An air conditioner indoor unit, comprising: a housing (1) as well as a heat exchanger (2) and a controller provided in the housing (1). The housing (1) further comprises: a spray pipe (41) for spraying liquid on the heat exchanger (2). The controller is configured, when a self-cleaning function is required to be activated, to control an air conditioner to produce heat and to control the spray pipe (41) to spray liquid to the heat exchanger (2). By controlling the spray pipe to spray liquid on the heat exchanger while the heat exchanger is producing heat, the dust, bacteria, and other dirt on the heat exchanger are removed; compared with the existing manner in which steam is used as cleaning medium, the impact force of the liquid is greater, the cleaning performance is enhanced, without providing a steam generator, and energy consumption can be lowered.

Description

Indoor unit of air conditioner

This application is based on the Chinese patent application with the application number 201811173152.6 and the application date of 2018.10.09, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference.

Technical field

The present application relates to the technical field of air conditioning, for example, to an indoor unit of air conditioning.

Background technique

The indoor unit of the air conditioner works in a closed environment. When the content of metabolites, carbon dioxide, exhaust gas, dust and other substances in the air increases, these substances will be firmly accumulated in the air conditioner during the operation of the air conditioner The fins of the indoor unit heat exchanger affect the cooling and heating effect of the air conditioner. More importantly, these dirt and pollutants carry bacteria, which will breed many molds, bacteria and germs. When the air conditioner works again, these bacteria are Under certain conditions, it will be quickly dispersed into the indoor air, and the content of air bacteria will rise. If you live in this environment for a long time, people will be susceptible to diseases.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

At present, the air conditioner indoor unit with self-cleaning function needs to convert water into steam, and then spray the steam on the heat exchanger for cleaning, the impact of the steam is small, and the cleaning power is limited. In addition, a steam generator needs to be added to increase the energy consumption of the entire system.

Summary of the invention

For a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general comment, nor is it to determine key / important constituent elements or to describe the protection scope of these embodiments, but as a preamble to the detailed description later.

An embodiment of the present disclosure provides an air conditioner indoor unit.

In some embodiments, the above air conditioner indoor unit includes: a housing, a heat exchanger and a controller disposed in the housing, the housing further includes:

A spray pipe for spraying liquid on the heat exchanger; the controller is used to control the heating of the air conditioner and the spray pipe to spray liquid to the heat exchanger when the self-cleaning function needs to be activated .

Some technical solutions provided by the embodiments of the present disclosure may achieve the following technical effects:

The present disclosure controls the heating of the air conditioner and the spray pipe to spray liquid to the heat exchanger, so that the dust and bacteria deposited on the heat exchanger are removed, compared with the existing cleaning method using steam as the cleaning medium In addition, the impact force when the liquid is sprayed is greater, and the cleanliness is enhanced. In addition, the present disclosure does not require a steam generator, which can save energy consumption.

The above general description and the following description are only exemplary and explanatory, and are not intended to limit the present application.

BRIEF DESCRIPTION

One or more embodiments are exemplified by the corresponding drawings. These exemplary descriptions and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a proportional limitation, and among them:

1 is a schematic cross-sectional view 1 of an indoor unit of an air conditioner provided by an embodiment of the present disclosure;

2 is a second schematic cross-sectional view of an air conditioner indoor unit provided by an embodiment of the present disclosure;

3 is a schematic structural diagram of a closed assembly of an air conditioner indoor unit provided by an embodiment of the present disclosure;

4 is a schematic structural diagram of an air conditioner indoor unit provided by an embodiment of the present disclosure;

5 is a three-dimensional structural schematic diagram of an indoor unit of an air conditioner provided by an embodiment of the present disclosure;

6 is a schematic diagram of the included angle between the center line of the spray hole of the spray pipe of the air conditioner indoor unit and the surface of the heat exchanger according to an embodiment of the present disclosure. .

Reference mark:

1: housing; 10: air duct; 11: collection mechanism; 12: volute tongue; 13: volute component; 2: heat exchanger; 3: first drive device; 31: gear; 41: spray pipe; 411 : Spray hole; 42: conveying pipe; 5: guide mechanism; 6: rack; 71: shutter; 72: second motor; 73: coupling; 74: drive shaft; 75: diversion mechanism; 81: water pump ; 82: water storage tank.

detailed description

The following description and drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, and do not require or imply any actual relationship or order between these elements. In fact the first element can also be called the second element and vice versa. Furthermore, the terms "include", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a structure, device or device that includes a series of elements includes not only those elements, but also other items not explicitly listed Elements, or include elements inherent to such structures, devices, or equipment. Without further restrictions, the element defined by the sentence "including one ..." does not exclude that there are other identical elements in the structure, device or equipment that includes the element. The embodiments in this document are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

The terms "portrait", "landscape", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "herein" The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this text and simplifying the description, rather than indicating or implying that the device or element referred to must It has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. In the description herein, unless otherwise specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection, or it may be the communication between two elements, It may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms can be understood according to specific situations.

Herein, unless otherwise stated, the term "plurality" means two or more.

In this article, the character "/" indicates that the front and back objects are in an "or" relationship. For example, A / B means: A or B.

In this article, the term "and / or" refers to an association relationship describing an object, indicating that there may be three relationships. For example, A and / or B means: A or B, or A and B.

Fig. 1 is a first schematic cross-sectional view of an air conditioner indoor unit according to an exemplary embodiment, and Fig. 4 is a schematic structural view of an air conditioner indoor unit according to an exemplary embodiment.

As shown in FIG. 1, the present disclosure provides an indoor unit of an air conditioner, including: a housing 1, a heat exchanger 2 and a controller (not shown) provided in the housing 1, the housing 1 further includes: The liquid is sprayed on the spray pipe 41 on the heat exchanger 2; the controller is used to control the heating of the heat exchanger 2 when the self-cleaning function needs to be activated and control the spray pipe 41 to spray liquid to the heat exchanger 2.

The air conditioner indoor unit provided by the present disclosure uses a controller to control the heat exchanger 2 to heat and control the spray pipe 41 to spray liquid to the heat exchanger 2 when the self-cleaning function needs to be activated. The timing at which the spray pipe 41 sprays the liquid to the heat exchanger 2 is at or after the heat exchanger 2 heats up. In this way, combining the temperature of the heat exchanger 2 with the spray strength of the liquid can make the dirt easier to clean.

Compared with the existing air conditioner indoor unit adopting hot steam spraying method, the present disclosure utilizes the heating function of the air conditioner indoor unit itself, combined with spraying liquid on the heat exchanger, without additional steam generating device to convert the liquid into heat Steam can be used to achieve thermal cleaning.

Optionally, the heat exchanger is heated to 60 ~ 70 ℃, and then the controller controls the spray pipe to spray, which has a good cleaning effect on dirt. The higher temperature liquid is beneficial to the cleaning effect, especially to clean the oil-soluble dirt on the surface of the heat exchanger, and has a bactericidal effect.

In this embodiment, the liquid sprayed from the spray pipe 41 may be water, air conditioning cleaning liquid, or a mixture of water and air conditioning cleaning liquid.

The spray pipe 41 communicates with the liquid source to realize the supply of liquid. The source of the liquid is the liquid storage tank. The liquid storage tank can be externally placed in the indoor unit of the air conditioner, for example, placed on a balcony or outdoors, or can be built in the indoor unit of the air conditioner. When water is used as the cleaning liquid, the spray pipe 41 may be directly connected to the tap water pipe.

Optionally, as shown in FIG. 4, the spray pipe 41 is connected to the water storage tank 82 through the delivery pipe 42.

Optionally, a liquid pressurized delivery device is provided on the delivery tube. As shown in FIG. 4, a water pump 81 is provided on the delivery tube 42 so that the liquid has sufficient power to be delivered to the spray tube 41.

The indoor unit of the air conditioner is generally provided with a water receiving tray for collecting condensed water. The water receiving tray is located below the heat exchanger 2. The liquid washed by the heat exchanger 2 can fall into the water receiving tray and drain through the water receiving tray Pipe discharge.

In an alternative embodiment, as shown in FIG. 4, the housing 1 further includes a first driving device 3 which drives the spray pipe 41 to move laterally to spray the liquid to the heat exchanger 2 To make the spray area fully cover the heat exchanger 2.

In this embodiment, as shown in FIG. 5, the first driving device 3 includes: a first motor fixed in the housing 1 and a gear 31 sleeved on the driving shaft of the first motor; It includes: a rack 6 extending laterally along the surface of the heat exchanger 2 and a guide mechanism 5, the rack 6 can slide along the guide mechanism 5 and mesh with the gear 31, and the spray pipe 41 is fixed on the rack 6. The first driving device 3 drives the rack 6 to move laterally along the guide mechanism 5, thereby driving the lateral movement of the spray pipe 41.

In an alternative embodiment, as shown in FIG. 1, the spray pipe 41 extends longitudinally along the surface of the heat exchanger 2, the spray pipe 41 is provided with a plurality of spray holes 411 at intervals, and the spray liquid is sprayed from the spray holes 411 Out, spraying is achieved along the length of the spray pipe 41.

Fig. 6 is an angle between the center line of the spray hole of the spray pipe of the air conditioner indoor unit and the surface of the heat exchanger according to an exemplary embodiment. As shown in Fig. 6, the center line of the spray hole 411 and the change The angle between the surface of the heat exchanger 2 is α, where α = 30 ° -60 °, the angle between the surface of the heat exchanger 2 and the horizontal direction is β, and α decreases with the increase of β. Optionally, when β = 60 °, α = 45 °, so that the spray liquid flushes the dirt more thoroughly.

Optionally, the distance between the spray pipe 41 and the heat exchanger 2 is L, where L = 0.5 mm to 10 mm. For example, L = 1, 2, 3, 4, or 5 mm. L increases with the increase of α. In this way, the sprayed liquid has sufficient cleaning power for the heat exchanger 2.

In some optional embodiments, there are multiple spray pipes 41. A plurality of shower pipes 41 are provided in parallel, and a shower area can be formed.

Optionally, as shown in FIGS. 4 and 5, there are two spray pipes 41, which are respectively fixed to the two ends of the rack 6. When two spray pipes 41 move laterally along the surface of the heat exchanger 2 at the same time, the moving path is shortened relative to the single spray pipe 41, and the spraying efficiency is higher.

Optionally, the rack 6 is only slidably connected to the guide mechanism 5 at both ends and the center to save connection materials.

Further, the length of the rack 6 does not exceed half of the lateral length of the heat exchanger 2. In this way, when the spray pipe moves from one end of the heat exchanger 2 to the other end, the heat exchanger 2 is prevented from appearing an area that cannot be sprayed.

Optionally, the guide mechanism 5 is located at one-half of the length direction of the spray pipe 41, so that the spray pipe 41 can be kept stable, avoiding the swing of the spray pipe 41 and affecting the spray.

In an alternative embodiment, as shown in FIGS. 1 and 2, a collection mechanism 11 for collecting spray liquid is provided below the heat exchanger 2. After the spray liquid cleans the heat exchanger 2, it falls into the collection mechanism 11 and is collected. Optionally, the collection mechanism 11 has a liquid discharge pipe that discharges the spray liquid from the indoor unit.

In an alternative embodiment, the indoor unit of the air conditioner further includes an air duct 10 formed in the housing 1, an air deflector is provided at an air outlet of the air duct 10, and the air duct 10 is provided with an air duct capable of opening and closing Closed assembly of 10; when the closed assembly closes the air duct 10, an enclosed cleaning space is formed in the housing 1.

The closing assembly can close the air duct 10 to form an enclosed cleaning space in the housing 1 and prevent spray liquid from flowing out of the air duct 10. The closing assembly closes the air duct 10 inside the air duct 10, cooperates with the air guide plate to close the air outlet of the air duct 10, and enhances the sealing effect of the air duct 10. In addition to preventing the spray liquid from flowing out, it can also block the entry of external dust.

Fig. 3 is a schematic structural diagram of a closed assembly of an air conditioner indoor unit according to an exemplary embodiment.

As shown in FIG. 3, the closing assembly includes: a blocking member 71, which is used to close the air duct 10; a second driving device is connected to the blocking member 71, and the second driving device drives the blocking member 71 between the open position and the closed position In the open position, as shown in FIG. 2, the shutter 71 makes the air duct 10 open, and in the closed position, as shown in FIG. 1, the shutter 71 closes the air duct 10.

Specifically, the shutter 71 extends in the lateral direction of the air duct 10 and can close the air duct 10 when the shutter 71 is closed. When the spray pipe 41 starts spraying, the second driving device drives the shutter 71 to close the air duct 10, preventing liquid from flowing out of the housing 1 through the air duct 10; when the spray pipe 41 stops spraying, the second driving device The driving shutter 71 opens the air duct 10. Among them, the second driving device is fixedly installed in the housing 1.

Optionally, as shown in FIGS. 1 and 2, the inside of the housing 1 further includes: a volute member 13 having a volute tongue 12 therein, and the air outlet of the volute member 13 communicates with the air duct 10.

Optionally, the collecting mechanism 11 is a groove formed by recessing inward at the corresponding positions of the volute member 13 and the blocking member 71.

In one embodiment, as shown in FIG. 3, the second driving device includes: a second motor 72, a coupling 73, and a transmission shaft 74, and the output shaft of the second motor 72 is connected to the transmission shaft 74 through the coupling 73, The transmission shaft 74 extends laterally along the shutter 71 and is fixedly connected to the shutter 71. In this way, as shown in FIGS. 1 and 3, when the shutter 71 is closed, the second motor 72 drives the transmission shaft 74 to rotate, thereby driving the shutter 71 to rotate until the free end of the shutter 71 abuts the volute 12, and the shutter 71 closes the air duct 10 to form a closed cleaning space; when the shield 71 is opened, as shown in FIG. 2, the shield 71 rotates in the reverse direction until its free end abuts the volute member 13 to allow the air duct 10 to be opened. Optionally, a wall of the volute member 13 close to the collecting mechanism 11 is formed with a placement groove for placing the shield 71. When the blocking member 71 is opened, the blocking member 71 abuts against the placement slot to avoid forming resistance to the airflow passing through the air duct 10.

Optionally, the position of the volute 12 is higher than the transmission shaft 74 so that the shutter 71 is inclined when closed. In this way, when the shutter 71 is closed, the sprayed liquid falls on the shutter 71 and can flow toward the transmission shaft 74 and then fall into the collection mechanism 11.

In an alternative embodiment, the blocking member 71 is provided with a flow guiding mechanism for guiding the spray liquid.

Optionally, as shown in FIG. 3, the flow guiding mechanism 75 extends longitudinally along the shield 71. When the shutter 71 closes the air duct 10, the flow guiding mechanism 75 can guide the liquid falling thereon. Specifically, the height of the flow guiding mechanism 75 gradually decreases from the free end of the shield 71 to the end of the transmission shaft 74 to improve the flow guiding effect on the liquid.

The present disclosure controls the heating of the air conditioner and the spray pipe to spray liquid to the heat exchanger, so that the dust and bacteria deposited on the heat exchanger are removed, compared with the existing cleaning method using steam as the cleaning medium , The impact force when the liquid is sprayed is greater, the cleanliness is enhanced, and there is no need to set up a steam generator, saving energy consumption.

The present disclosure is not limited to the structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

An indoor unit of an air conditioner includes a housing, a heat exchanger and a controller provided in the housing, wherein the housing further includes:

A spray pipe for spraying liquid on the heat exchanger; the controller is used to control the heating of the air conditioner and the spray pipe to spray liquid to the heat exchanger when the self-cleaning function needs to be activated .
The air conditioner indoor unit according to claim 1, further comprising a first driving device that drives the spray pipe to move to spray the liquid onto the heat exchanger.
The air conditioner indoor unit according to claim 2, wherein the spray pipe moves laterally along the surface of the heat exchanger.
The air conditioner indoor unit according to claim 1, wherein the spray pipe extends longitudinally along the surface of the heat exchanger, and the spray pipe is provided with a plurality of spray holes at intervals.
The air conditioner indoor unit according to claim 4, wherein the angle between the center line of the injection hole and the surface of the heat exchanger is 30 ° to 60 °.
The air conditioner indoor unit according to claim 1, wherein a collection mechanism for collecting spray liquid is provided below the heat exchanger.
The air conditioner indoor unit according to claim 1, wherein the air conditioner indoor unit further includes an air duct formed in the casing, an air guide plate is provided at an air outlet of the air duct, and the air duct is provided in the air duct A closed assembly capable of opening and closing the air duct.
The indoor unit of an air conditioner according to claim 7, wherein the closing assembly includes: a shielding member for closing the air duct; a second driving device connected to the shielding member, the second driving device driving the shielding member at Switch between open and closed positions.
The indoor unit of an air conditioner according to claim 8, wherein the shielding member is provided with a guide mechanism for guiding the spray liquid.