CN110296482B - Air supply assembly for air conditioner outdoor unit, control method and air conditioner outdoor unit - Google Patents

Abstract

The invention relates to the technical field of air conditioners, and aims to solve the problem of unbalanced heat dissipation of the existing computer boards of outdoor air conditioners in different working modes, and provides an air supply component, a control method and an outdoor unit of air conditioners for the outdoor units of air conditioners , the outdoor unit of the air conditioner includes a condenser, a fan, and a heat sink connected to the computer board. The surface of the outdoor unit communicates with the outdoor environment, the second air inlet extends between the condenser and the fan, the cooling fins face the air outlet or are arranged downstream in the air supply duct; the baffle is pivotally connected to the second air inlet The air outlet is used to open or close the second air inlet so that the outdoor unit can connect to different airflow paths. The air supply assembly provided by the invention solves the problem of unbalanced heat dissipation of the computer board, avoids the phenomenon of poor heat dissipation, and prolongs the service life of the computer board.

Description

Air supply component for outdoor unit of air conditioner, control method and outdoor unit of air conditioner

technical field

The invention relates to the technical field of air conditioners, in particular to an air supply assembly for an outdoor unit of an air conditioner, a control method and the outdoor unit of an air conditioner.

Background technique

The computer board of the outdoor unit of the air conditioner needs to dissipate heat during operation. Usually, the computer board is connected with heat sinks to increase the heat dissipation area and enhance the heat dissipation effect. The heat from the computer board is taken away by the air circulating between the heat sinks.

The existing computer board is installed under the top plate of the outdoor unit and between the condenser and the fan. In this way, when the fan drives the air to circulate and exchange heat with the condenser, it can also exchange heat with the cooling fins, thereby taking away the heat. heat on the heat sink. When the air conditioner is heating, the temperature of the outdoor air decreases after exchanging heat with the condenser under the drive of the fan, and the low-temperature air flows through the heat sink to facilitate the heat dissipation of the heat sink. However, when the air conditioner is cooling, the condenser will release heat into the air to increase the air temperature. The high-temperature air flows through the high-temperature heat sink, which will hinder the heat dissipation of the heat sink, resulting in poor heat dissipation of the computer board, and may cause the computer board to trigger The overheating temperature protection mechanism causes the outdoor unit to stop.

Correspondingly, there is a need in the art for a new air supply assembly for an outdoor unit of an air conditioner to solve the above problems.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of unbalanced heat dissipation of the existing air conditioner outdoor unit computer board in different working modes, the first aspect of the present invention provides an air supply assembly for the air conditioner outdoor unit , the air conditioner outdoor unit includes a condenser, a fan and a cooling fin connected to the computer board, the air supply assembly includes: an air supply duct, which is formed with a first air inlet, a second air inlet and an air outlet, the first The air inlet extends to the surface of the air conditioner outdoor unit and communicates with the outdoor environment, the second air inlet extends between the condenser and the fan, and the cooling fins face the air outlet or are arranged on the Downstream in the air supply duct; a baffle, pivotally connected to the second air inlet, for opening or closing the second air inlet, so that the air conditioner outdoor unit can be selectively connected to different Airflow path.

In the above preferred technical solution of the air supply assembly for the outdoor unit of the air conditioner, the second air inlet is directly opposite to the air outlet.

In the above preferred technical solution of the air supply assembly for the outdoor unit of the air conditioner, an air guide member is provided at the first air inlet so as to guide the air in the outdoor environment into the air supply duct.

In the above preferred technical solution of the air supply assembly for the outdoor unit of the air conditioner, the air supply assembly further includes a motor for driving the baffle to swing.

In the preferred technical solution of the above-mentioned air supply assembly for the outdoor unit of the air conditioner, the air supply assembly further includes a gear, the gear is connected to the output shaft of the motor, and the baffle is formed to mesh with the gear. gear teeth.

In the above preferred technical solution of the air supply assembly for the outdoor unit of the air conditioner, the outdoor unit of the air conditioner further includes a side plate, and a through hole is formed on the side plate, and the first air inlet matches the through hole; or

The air conditioner outdoor unit includes a backboard, and a through hole is formed on the backboard, and the first air inlet matches the through hole.

In the above preferred technical solution of the air supply assembly for the outdoor unit of the air conditioner, the through hole is connected with a grille.

The second aspect of the present invention also provides an outdoor unit of an air conditioner, which includes the air supply assembly for an outdoor unit of an air conditioner described in any one of the above technical solutions.

The third aspect of the present invention also provides a control method for an air supply assembly of an outdoor unit of an air conditioner, in which the air supply assembly is the air supply assembly described in any one of the above technical solutions,

The control methods include:

Detect the operation mode of the air conditioner;

According to the detection result, the action of the baffle is selectively controlled.

In the preferred technical solution of the above-mentioned control method for the air supply assembly of the outdoor unit of the air conditioner, the step of "selectively controlling the action of the baffle according to the detection result" specifically includes:

If the operation mode is cooling mode, controlling the baffle to swing to or keep in the state of closing the second air inlet, so as to connect the airflow path from the first air inlet to the air outlet; and/or

If the operation mode is the heating mode, control the baffle to swing to or maintain the state of opening the second air inlet, so as to connect the air flow path from the second air inlet to the air outlet .

In the air supply assembly of the outdoor unit of the air conditioner provided by the present invention, two air inlets are arranged in the air supply duct, and one of the air inlets is communicated with the outdoor environment to receive the air flow in the outdoor environment, and the other air inlet extends to the condensing Between the air conditioner and the fan to receive the airflow after heat exchange with the condenser, and set up baffles to selectively open or close different air inlets to connect different airflow paths, so that the air conditioner can be used when heating The airflow cooled by the condenser exchanges heat with the heat sink, which can prevent the airflow heated by the condenser from entering the gap of the heat sink when the air conditioner is cooling, and transport the low-temperature air in the environment to the heat sink through the connected air duct In order to cool down the heat sink, this can make the heat dissipation process of the computer board in the outdoor unit not affected by the working mode of the air conditioner and maintain a stable heat dissipation effect, avoid the problem of unbalanced heat dissipation of the computer board, and then prevent the computer board from overheating and cause the air conditioner to shut down phenomenon, but also prolong the life of the computer board.

Further, by arranging the second air inlet directly opposite to the air outlet, it is beneficial for the air flow passing through the condenser to smoothly enter the air duct formed by the second air inlet and the air outlet, thereby increasing the air intake volume of the air duct.

Further, by providing an air guide member at the first air inlet, for example, a fan for drawing air, it is beneficial for the airflow in the environment to smoothly enter into the air duct formed by the first air inlet and the air outlet.

Further, the first air inlet is connected to the backboard or the side board of the outdoor unit. Compared with connecting the first air inlet to the top board of the outdoor unit, the air inlet arranged on the backboard or the side board can Ensure that the air in the environment enters the air duct smoothly, and prevent impurities such as rainwater and dust from entering the air duct.

The control method of the air supply assembly further provided by the present invention is based on the operation of the aforementioned air supply assembly, so it has all the technical effects of the aforementioned air supply assembly, and will not be repeated here.

Description of drawings

The air supply assembly for the air conditioner outdoor unit of the present invention is described below with reference to the accompanying drawings, in the accompanying drawings:

Fig. 1 is a partial structural schematic diagram of an air conditioner outdoor unit provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the air supply assembly for the outdoor unit of the air conditioner provided by the embodiment of the present invention, which shows the closed state of the baffle;

Fig. 3 is a schematic structural diagram of an air supply assembly for an outdoor unit of an air conditioner provided by an embodiment of the present invention, which shows a state where the baffle is opened;

Fig. 4 is the state of the air supply assembly of the outdoor unit of the air conditioner in the heating mode provided by the embodiment of the present invention;

Fig. 5 is the state of the air supply assembly of the outdoor unit of the air conditioner in the cooling mode provided by the embodiment of the present invention;

List of reference signs:

1. Backplane; 2. Condenser; 3. Grille; 4. Air supply assembly; 40. First air inlet; 41. Pipe body; 42. Motor; 43. Gear teeth; 44. Shaft; 45. Baffle ; 46, air outlet; 47, second air inlet; 5, side panel; 6, computer board; 7, fan; 8, heat sink.

Detailed ways

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positions The terms of the relationship are based on the orientation or positional relationship shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be interpreted as Limitations on the Invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Based on the problem of unbalanced heat dissipation of the existing air conditioner outdoor unit computer boards in different operating modes pointed out in the background technology, the embodiment of the present invention provides an air supply component for the air conditioner outdoor unit and its control method, so as to The mode adaptively switches the airflow channel that supplies air to the heat sink, so as to ensure the stable and good heat dissipation of the computer board.

Referring to Fig. 1-Fig. 5, Fig. 1 is a partial structural schematic diagram of an air conditioner outdoor unit provided by an embodiment of the present invention; Fig. 2 is a structural schematic diagram of an air supply assembly for an air conditioner outdoor unit provided by an embodiment of the present invention, which shows The closed state of the baffle; Figure 3 is a schematic structural diagram of the air supply assembly for the outdoor unit of the air conditioner provided by the embodiment of the present invention, which shows the state of the open baffle; Figure 4 is the outdoor unit of the air conditioner provided by the embodiment of the present invention The state of the air supply assembly in the heating mode; FIG. 5 shows the state of the air supply assembly in the cooling mode of the air conditioner outdoor unit provided by the embodiment of the present invention.

Referring first to FIG. 1 , the air conditioner outdoor unit provided by the embodiment of the present invention includes a casing, a computer board 6 , a condenser 2 , a fan 7 and other components. The housing is composed of a top plate (not shown), side plates 5, front plate, back plate 1, etc.; the computer board 6 is installed under the top plate and between the fan 7 and the condenser 2, and the computer board 6 is connected with a heat sink. The heat sink 8 is composed of a horizontal heat sink and a plurality of vertical heat sinks arranged at intervals, the horizontal heat sink is physically connected to the computer board 6, and the vertical heat sink and the horizontal heat sink are connected as an integral structure. The condenser 2 is located at the back of the outdoor unit. After the fan 7 is turned on, an airflow flowing from the back to the front is formed. The airflow enters the outdoor unit from the back of the outdoor unit and flows through the condenser 2. After heat exchange with the condenser 2, it flows to the fan. And discharge from the front end of the outdoor unit. In the structure of a traditional outdoor unit, the air flow passes through the cooling fins 8 and exchanges heat with the cooling fins 8 .

The air conditioner outdoor unit provided by the embodiment of the present invention includes, in addition to the above-mentioned conventional components, an air supply assembly 4, which can switch different airflow channels for different operating modes of the air conditioner, so as to deliver cooling air of different temperatures .

The air supply assembly 4 in the embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

Referring to Fig. 2 and Fig. 3, the air supply assembly 4 in the embodiment of the present invention includes: an air supply duct, a baffle 45 and a driving device. The duct main body 41 of the air supply duct is a special-shaped pipe structure, on which a first air inlet 40 , a second air inlet 47 and an air outlet 46 are formed. Specifically, the shape of the first air inlet 40 is a square, which is formed at one end of the duct main body 41, and the shape of the second air inlet 47 is approximately square, and it is formed in the middle of the duct main body 41, and the middle part of the duct main body 41 is formed as a pressure. The flat box structure facilitates the installation of the pipeline, and the structure of the pipeline main body 41 can be adaptively adjusted according to the installation space.

3 and 4, the first air inlet 40 of the air supply duct extends to the surface of the outdoor unit of the air conditioner and communicates with the outdoor environment. Specifically, as shown in FIG. 1 , a square through hole is formed on the top of the backplane 1 , and the grid 3 is connected to the through hole, and the shape of the through hole matches the shape of the first air inlet 40 . Alternatively, the through hole can also be provided on the side plate 5 and connected to the grille 3 to prevent foreign matter from entering the air supply duct.

1 and 4, the second air inlet 47 extends to between the condenser 2 and the fan 7, and the cooling fin 8 is facing the air outlet 46 or is arranged downstream of the air supply duct. The cooling fin 8 in this embodiment is arranged on Downstream of the supply air duct. A baffle 45 is pivotally connected to the second air inlet 47, the baffle 45 can completely cover the second air inlet 47, the baffle 45 is pivotally connected to the pipe main body 41 through the rotating shaft 44, as shown in Figure 2, at this time The baffle 45 is in the state of closing the second air inlet 47 , when the baffle 45 closes the second air inlet 47 , the air supply duct connects the airflow path from the first air inlet 40 to the air outlet 46 . As shown in Figure 3, the baffle plate 45 is in the state of opening the second air inlet 47 at this moment, and when the baffle plate 45 opened the second air inlet 47, the air supply duct connected the second air inlet 47 and led to the air outlet 46 airflow paths.

In addition, the blower assembly 4 also includes a motor 42 for driving the baffle 45 to swing. The motor 42 is connected with the computer board 6 and is controlled by the computer board 6 .

Preferably, the second air inlet 47 is directly opposite to the air outlet 46, which can make the air flow more smoothly. Because the duct main body 41 is a flattened box-shaped structure, although the airflow path from the first air inlet 40 to the air outlet 46 is still connected, the straight pipe-shaped airflow from the second air inlet 47 to the air outlet 46 There is no obstruction in the passage. When the second air inlet 47 is open, the airflow passage from the second air inlet 47 to the air outlet 46 becomes the main airflow passage, and most of the airflow is transported to the heat sink 8 through this passage.

Further, the blower assembly 4 also includes a gear, which is connected to the output shaft of the motor 42 , and the baffle 45 is formed with gear teeth 43 meshing with the gear. Referring to FIG. 2 or FIG. 3 , forming gear teeth 43 on the baffle 45 is equivalent to making the gear and the baffle 45 an integrated structure. For the convenience of viewing the cooling fins 8 in the air supply duct, part of the structure above the cooling fins 8 in the air supply duct is hidden in the figure. Referring to FIG. 2 , under the drive of the motor 42 , the baffle plate 45 rotates clockwise around the rotating shaft 44 to open the second air inlet 47 , so that it is in the state shown in FIG. 3 .

Further, an air guide member is provided at the first air inlet 40 so as to guide the air in the outdoor environment into the air supply duct. For example, a fan is installed near the first air inlet 40 , and the fan rotates to drive outdoor air into the air duct to promote the air flow in the air duct.

The control method for the air supply assembly 4 of the air conditioner outdoor unit is described in detail below based on the air conditioner outdoor unit provided in the above-mentioned embodiments. Referring to FIG. 4 and FIG. 5 , the control method for the air supply assembly 4 of the air conditioner outdoor unit includes :

S1. Detect the operating mode of the air conditioner. Specifically, there are two operating modes of the air conditioner: cooling mode and heating mode. The specific working mode is selected by the user. For example, the user selects the operating mode of the air conditioner as the cooling mode through the The computer board 6 of the computer will be informed of this selection, and the corresponding working mode of the air conditioner can be started.

S2. Selectively control the movement of the baffle plate 45 according to the detection result.

Specifically, if the operating mode is the cooling mode, the control baffle 45 swings to or remains in the state of closing the second air inlet 47, so as to connect the airflow path from the first air inlet 40 to the air outlet 46, referring to FIG. 5 shown. The specific working principle is as follows: when the air conditioner is cooling, the refrigerant circulating in the air conditioner circulates to the outdoor unit after taking away the indoor heat, and exchanges heat with the outdoor air in the condenser 2, transferring the heat carried in the refrigerant to the air, thus , the temperature of the air passing through the condenser 2 rises, which is not conducive to the heat dissipation of the heat sink 8. At this time, the second air inlet 47 is blocked by the control baffle 45, and the air flow flowing through the condenser 2 can no longer directly pass through the heat sink 8. And now because the first air inlet 40 communicates with the outdoor environment, under the effect of the wind guide member such as a small fan, the outdoor low-temperature air (relative to the high-temperature air after heat exchange with the condenser 2) passes through the first air inlet. 40 enters the air duct to exchange heat with the cooling fins 8. The path of outdoor air entering the air supply assembly is shown by the dotted arrow in Figure 5, and the air supply duct transports it to the cooling fins 8 to take away the heat of the cooling fins 8.

If the operating mode is the heating mode, the control baffle 45 swings to or remains in the state of opening the second air inlet 47 to connect the airflow passage from the second air inlet 47 to the air outlet 46 . Specifically, if the air conditioner heats up, the temperature of the air flowing through the condenser 2 decreases, and the low-temperature air is conducive to the heat dissipation of the heat sink 8. At this time, the second air inlet 47 is opened, and the low-temperature air quickly takes away the heat sink 8 The heat of the computer board 6 is realized to cool down, and the circulation path of the low-temperature air is shown by the solid arrow in FIG. 4 .

In the air supply assembly of the outdoor unit of the air conditioner provided by the present invention, two air inlets are arranged in the air supply duct, and one of the air inlets is communicated with the outdoor environment to receive the air flow in the outdoor environment, and the other air inlet extends to the condensing Between the air conditioner and the fan to receive the airflow after heat exchange with the condenser, and set up baffles to selectively open or close different air inlets to connect different airflow paths, so that the air conditioner can be used when heating The airflow cooled by the condenser exchanges heat with the heat sink, which can prevent the airflow heated by the condenser from entering the gap of the heat sink when the air conditioner is cooling, and transport the low-temperature air in the environment to the heat sink through the connected air duct In order to cool down the heat sink, this can make the heat dissipation process of the computer board in the outdoor unit not affected by the working mode of the air conditioner and maintain a stable heat dissipation effect, avoid the problem of unbalanced heat dissipation of the computer board, and then prevent the computer board from overheating and cause the air conditioner to shut down phenomenon, but also prolong the life of the computer board.

So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings, but those skilled in the art will easily understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims (7)

1. A control method of an air supply unit for an outdoor unit of an air conditioner including a condenser, a blower fan and a heat radiating fin connected to a computer board, the air supply unit comprising:

the air supply pipeline is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet extends to the surface of the outdoor unit of the air conditioner and is communicated with the outdoor environment, the second air inlet extends to a position between the condenser and the fan, and the radiating fin is opposite to the air outlet or arranged at the downstream in the air supply pipeline;

a baffle pivotally connected to the second air inlet for opening or closing the second air inlet so that the outdoor unit can selectively connect different air flow paths,

the control method comprises the following steps:

detecting an operation mode of the air conditioner;

selectively controlling the action of the baffle according to the detection result;

if the operation mode is a refrigeration mode, controlling the baffle to swing to or keep in a state of closing the second air inlet so as to connect the airflow passage from the first air inlet to the air outlet; and/or

And if the operation mode is a heating mode, controlling the baffle to swing to or keep in a state of opening the second air inlet so as to connect an air flow passage from the second air inlet to the air outlet.

2. The method of claim 1, wherein the second air inlet is opposite to the air outlet.

3. The method of claim 1, wherein an air guide member is provided at the first air inlet to guide air in an outdoor environment into the air supply duct.

4. The method of claim 1, wherein the blowing assembly further comprises a motor for driving the flap to swing.

5. The control method of an air supply assembly for an outdoor unit of an air conditioner of claim 4, wherein the air supply assembly further includes a gear connected to an output shaft of the motor, and the baffle is formed with gear teeth engaged with the gear.

6. The method of any one of claims 1 to 5, wherein the outdoor unit further comprises a side plate having a through hole formed therein, the first air inlet being matched with the through hole; or

The air conditioner outdoor unit comprises a back plate, a through hole is formed in the back plate, and the first air inlet is matched with the through hole.

7. The method of claim 6, wherein a grill is attached to the through hole.

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