WO2017049445A1

WO2017049445A1 - Indoor unit of air conditioner

Info

Publication number: WO2017049445A1
Application number: PCT/CN2015/090199
Authority: WO
Inventors: 孙海潮
Original assignee: 孙海潮
Priority date: 2015-09-21
Filing date: 2015-09-21
Publication date: 2017-03-30

Abstract

An indoor unit of an air conditioner, comprising an air outlet duct (16) of a crossflow impeller (8) and an air outlet duct wall (15) of the crossflow impeller (8). An air drafting opening (13) is provided on a volute of the air outlet duct wall (15) of the crossflow impeller. The upper extremity (12) and the lower extremity (14) of the air drafting opening (13) are staggered to form the air drafting opening (13). In a projection plane perpendicular to the axis line (10) of the crossflow impeller of the indoor unit and on which an air outlet (17) of the indoor unit is located at the left side, the line running from the upper extremity (12) to the lower extremity (14) is located within a circular sector formed with a projected point of the lower extremity (14) serving as the point of origin of a Cartesian coordinate system and rotating in the counterclockwise direction by 0° to 200° with the 50° angle in the positive direction of the x-axis serving as the starting line.

Description

Air conditioner indoor unit

Technical field

The invention belongs to the technical field of air conditioning and relates only to an indoor unit of an air conditioner.

Background technique

When the existing air-conditioning indoor unit is in operation, the indoor air is sucked into the indoor unit by the cross-flow impeller, and is exchanged with the heat exchanger to become heat-exchanged air, which is blown out by the indoor unit air outlet duct. The existing split air-conditioning indoor unit air outlet ducts are all closed air ducts, and the heat exchange air is isolated from the indoor air outside the air outlet duct before being blown out. Therefore, all the blown air ducts are blown out. Heat exchange wind. Especially in the cooling mode, the temperature difference between the inlet and outlet of the split type air conditioner indoor unit is about 14 degrees, and a large temperature difference is formed with respect to the original indoor air temperature. When the air adjustment reaches the set temperature, the air conditioner is interrupted around the set temperature. Turning on and off to regulate the working condition of the room temperature, the outlet air temperature of the indoor unit is lower, and the human body is subjected to the direct blow of the indoor air blower, and it will feel very cold, and is often subjected to the indoor air blow of the excessive temperature difference. Direct blowing, you will get what is commonly called "air conditioning disease", this problem is particularly prominent in the elderly, weak and sick, children's users, when people sleep. In order to solve this problem, it is necessary to provide a mixed air supply device to improve the temperature difference between the indoor unit air and the indoor air. However, the outflow of the cross-flow impeller in the indoor unit is characterized by the fact that the wind is formed by multiple refractions on the wall of the outlet duct, which determines that the outlet duct of the cross-flow impeller is designed to be as narrow as possible and is oriented toward The cross-flow impeller axis is curved in an arc. From the indoor unit to save cost and aesthetics, it also needs to be miniaturized. Therefore, the air duct in the indoor unit cannot accommodate the normal air supply device. Otherwise, the air supply device is forcibly set, and the air outlet of the air outlet will be Blockage, the air supply device will also change the outlet refracting of the cross-flow impeller, which seriously affects the wind pressure and air output. For a long time, those skilled in the art of air conditioning technology have always believed that an air supply device cannot be provided in an indoor air duct having a cross-flow impeller for heat exchange. For example, the Chinese patent No. CN201420218504, the first page of the patent specification entitled “An Air Conditioner” clearly states that “the existing air conditioners with installation parts generally use cross-flow fans, cross-flow fans, air ducts and air outlets. The positional relationship determines that it is difficult to provide an additional air supply device therein." The first page of the patent specification of China Patent No. CN201420218683 entitled "An Air Conditioning Indoor Unit with Air Supply Device" also clearly states that "the existing air conditioners with installation parts generally use cross-flow fans, and the cross-flow fan has its axis and exit. They are arranged in parallel, so in order to obtain the required air supply performance, the air conditioner has a large volume and cannot be provided with an additional air supply device." The air conditioner of the installation portion here refers to the wall mounted. The wall-mounted air conditioner indoor unit and the ceiling type air conditioner indoor unit suspended on the top of the room, where the cross-flow fan is a cross-flow impeller. Therefore, the technicians in the field of air conditioning always put the design of the air supply device on the outside of the air outlet of the indoor unit, and set up a wide variety of air guiding devices such as upper and lower air guiding, left and right air guiding, and diversion air guiding. There are also thousands of patented technical documents on the air guiding device on the outside of the air outlet of the indoor unit. The purpose is to improve the temperature difference in the area and reduce the influence of direct blowing. Chinese patent number CN204301261U, the patent entitled "A split wall-mounted air conditioner" (referred to as D patent) proposed on the rear volute of the air duct of the cross-flow impeller, that is, the air supply duct wall is set to send The wind device introduces a technical solution in which air that has not been exchanged in the air is introduced into the room and forms a mixed air with the heat exchange air in the air supply duct. The air supply duct of the air-flow indoor unit cross-flow impeller is the indoor unit air outlet duct. The main point of the technical solution is to open the air duct wall and install a wind guiding component at the opening, and form an additional air inlet at a corresponding position of the indoor indoor casing, and the air guiding component is in the natural section of the patent specification 0008, 0009. Illustrated: the air guiding component is a plurality of lead-style grilles, and the "leading style grid includes a first portion on the rear volute type line and a second portion bent away from the air supply duct", It is obvious that the drafting assembly of the D patent is also disposed outside the wall of the outlet duct. The purpose of the invention of the D patent has two points: 1. The mixed air that is formed in the air supply duct and has a small temperature difference with the indoor temperature and sent to the room, and the temperature difference is small Blowing on the human body, feeling cool and not cold, softer and more comfortable, improving the user's comfort experience; 2, increasing the air supply volume of the indoor unit air outlet, helping to speed up the indoor air flow speed and uniformity, Reduces the time and energy required for indoor air to reach a set temperature. However, the D patented technical solution has three shortcomings: 1. The space formed by the outside of the air duct indoor air duct wall and the indoor unit casing is the only air conditioning connecting pipe and air conditioning drain pipe that can be used to set the insulation pipe package and the outdoor Where the machine is connected to the power cord, these pipes and wires almost occupy the space outside the wall of the wind tunnel and are close to the outside of the air duct wall of the indoor unit. The existing air conditioner indoor unit is beautiful or cost-effective. Both tend to be ultra-thin and miniaturized. After the ultra-thin and miniaturized design, in addition to the above-mentioned pipeline and line layout, there is no extra space on the outside of the indoor air duct wall to accommodate the air-inducing components. Therefore, even if it is forced The air guiding component is arranged, and the air guiding port of the air guiding component is also connected by the air conditioning connecting pipe wrapped by the heat insulating pipe, the air conditioning drainage pipe and the power cable are blocked by the air conditioner, and the air leakage is not smooth, and the air volume is insufficient, and the first invention of the D patent is reached. The technical effect of the target will also be poor. The natural section of the third page of the D patent specification emphasizes that the opening 71 must be defined at a suitable position of the specific section of the rear volute 7 and the distance between the ends of the opening. Limited, has this problem implicitly described patent D aspect. 2, as the first line of the second page of the D patent specification refers to the first line of the third page, the additional air inlet is far away from the air outlet to avoid the problem that the air outlet of the indoor air outlet is recirculated through the additional air inlet. The thickness of the machine, that is, the length perpendicular to the wall, has been generally 300mm thick from the early years, and the thin design has been designed to the current 135mm-200mm. The additional air inlet is provided on the indoor casing to design it far away from the air outlet. It is impossible to exceed the thickness of the indoor unit. One inlet and one air inlet are only 135mm-200mm apart. Especially the inlet and outlet air inlet and outlet angles are less than 90°, and the backflow problem cannot be avoided. This recirculation zone of the air conditioner is located at the lower edge of the indoor unit, usually away from the active area of the person in the room. The backflow causes the air volume of the indoor unit to blow to the active area that usually needs air conditioning to be reduced, and the amount of air output is reduced to the target area, so that the D patent Not only can it not be reduced, but it increases the time and energy consumption required for the indoor air to reach the set temperature, and it is difficult to achieve the technical effect of the second invention of the D patent. 3. Nowadays, the competition in the air-conditioning market is becoming increasingly fierce, and the profit of air-conditioning has become increasingly meager. The patented technical solution of D has to achieve the purpose of invention by increasing the air-inducing components and additional air inlets, which will increase the cost and will inevitably reduce the competitiveness of products due to the increase of production costs. .

Summary of the invention

1. The object of the present invention is to provide a split type air conditioner indoor unit, which solves the problem that the existing split type air conditioner is not soft enough, and the air supply volume is small, that is, the D patent invention is completely achieved, and the D patent is solved. The poor wind induction effect of the air intake component and the additional air inlet bring more serious backflow problems.

2. The invention can be implemented without increasing the production cost on the basis of the existing air conditioner indoor unit, and the market competitiveness of the product is improved.

The object of the present invention is achieved by an air conditioner indoor unit comprising a cross-flow impeller air outlet duct and a cross-flow impeller air duct wall characterized by: a cross-flow impeller air outlet duct wall The volute is provided with a tuyere, and the upper end and the lower end of the tuyere are staggered to form an air guiding opening, which is perpendicular to the axial line of the indoor flow through the impeller, and the indoor air outlet is located in the projection plane on the left side, and the upper end and the lower end are connected. The projection point at the lower end is the origin of the plane rectangular coordinate system, and the fan-shaped interval formed by the counterclockwise rotation of 0° to 200° is taken as the starting line of the X-axis in the positive direction of 50°.

The object of the present invention can also be achieved in such a manner that an air conditioner indoor unit includes a cross-flow impeller air duct and a cross-flow impeller air duct wall, and is characterized in that: a cross-flow impeller air duct The volute of the wall is provided with a tuyere, and the upper end and the lower end of the tuyere are staggered to form an air guiding opening, which is perpendicular to the axis of the impeller of the indoor machine, and the air outlet of the indoor unit is located in the projection plane on the left side, and the upper end and the lower end are For the connection, the projection point at the lower end is the origin of the plane rectangular coordinate system, and the fan-shaped interval formed by the counterclockwise rotation of 40° to 160° is taken as the starting angle of the X-axis in the positive direction of 50°.

In the air conditioner indoor unit as described above, the air outlet is provided on the mounting plate on the rear side of the indoor unit casing.

In the air conditioning indoor unit as described above, the air inlet is communicated with the indoor air through a hole in the mounting plate.

In the air conditioner indoor unit as described above, a damper that can be opened and closed is provided on the air inlet.

In the air conditioning indoor unit as described above, the vertical distance between the upper and lower ends of the air inlet is less than 10 mm.

In order to clearly illustrate the present invention, the present invention is an axial center line of an air-flow indoor unit cross-flow impeller, that is, parallel to a horizontal plane and parallel to a vertical plane of a horizontal plane, and the cross-flow impeller axis is located in the first or second quadrant region of the coordinate system. Where the technical features of the technical solution claimed in the present invention are described as standards, the axial line of the air-flow indoor unit cross-flow impeller and the vertical plane of the horizontal plane or the horizontal plane can theoretically be formed at any angle to form the cross-flow impeller shaft. The heart can theoretically be installed in the third or fourth quadrant of the above coordinate system, but the essence of the technical features will not be changed. As long as the air conditioner indoor unit is placed in the above standard, the technology claimed in the present invention falls. The air conditioner indoor unit of the solution, regardless of how it is installed, does not depart from the scope of the invention as claimed.

The air conditioning indoor unit of the present invention is specifically an indoor unit that uses a cross-flow impeller to enter and exit the wind. Therefore, the cross-flow impeller air outlet duct of the present invention is an indoor unit air outlet duct, and the four walls of the air outlet duct are The wind tunnel wall, the cross-flow impeller air duct is composed of a volute tongue and a volute of the wind duct portion, and the air inlet of the present invention is disposed on the volute of the cross-flow impeller air duct wall, which is generally called The cross-flow impeller is disposed on the rear volute of the air duct wall. Therefore, the cross-flow impeller air outlet duct wall of the present invention is provided with a tuyere, that is, a tuyere is formed on the volute of the cross-flow impeller air outlet duct wall. Generally, the cross-flow impeller has a long cylindrical shape, and the cross-flow impeller has a rectangular cross section of the air outlet duct, and the air outlet of the indoor unit has a rectangular cross section, and the axial line of the cross-flow impeller is parallel to the long center line of the rectangular shape, so the cross flow The tuyere opened on the impeller air duct wall is also corresponding to the rectangle with the long center line parallel thereto. The two long ends forming the rectangular tuyere are in the order of the flow direction of the cross-flow impeller to the outlet of the indoor unit. First, the long side of the rectangular tuyere on the wall of the outlet duct is the upper end, and the other long side corresponding thereto Then it is the lower end.

The invention is perpendicular to the axial center of the indoor flow impeller, and the projection plane of the indoor air outlet located below the left side is the right side view of the air conditioner indoor unit, that is, FIG. 1 of the present invention, and vice versa, the left side view of the air conditioner indoor unit. The characteristics of the indoor unit's cross-flow impeller refracting the wind determine that the wind duct is different from the general fan duct. The general fan duct air duct technology is not suitable for the cross-flow impeller duct, the cross-flow impeller. The shape of the outlet duct must be curved in the direction of the axis of the cross-flow impeller. Therefore, if only a rectangular tuyere is opened on the original outlet duct wall, the two long sides of the oblong air outlet are still curved. On the wall of the air outlet duct, the air flowing out from the cross-flow impeller will directly flow forward at the tuyere against the tuyere, and it is impossible to achieve the purpose of introducing indoor air. Therefore, it is necessary to "the upper end and the lower end of the tuyere are staggered to form an air vent", and the staggered here is the wall of the outlet duct where the upper end and the lower end are located, not on the same curved line. At the same time, the relative positional relationship between the upper end and the lower end of the air inlet on the wall of the air outlet duct must satisfy the specific "projection plane perpendicular to the axis of the impeller of the indoor unit, and the air outlet of the indoor unit is located on the left side. In the middle, the connection between the upper end and the lower end, the projection point at the lower end is the origin of the plane rectangular coordinate system, and the fan shape formed by the counterclockwise rotation of 0° to 200° with the angle of the positive X direction of the X axis as the starting line This technical feature within the interval. The essential meaning of this technical feature is: in the projection plane perpendicular to the axial direction of the indoor flow impeller, the indoor air outlet is located on the left side, the connection between the upper end and the lower end, the projection point at the lower end is the origin. The horizontal axis is the X-axis, and the vertical axis is the y-axis. In the plane rectangular coordinate system, the fan-shaped interval is formed by rotating the starting line of the angle of 50° in the positive direction of the X-axis by 0° to 200° counterclockwise. The upper end and the lower end of the air vent are not only located in this sector, but also satisfy the relative positional relationship. The starting line of the angle of 50° in the positive direction of the X-axis means a straight line that is rotated counterclockwise by 50° from the positive X-axis direction. If the plane rectangular coordinate system is established with the left side view of the air conditioner indoor unit of the present invention as a plane, the relative position structure relationship between the upper end and the lower end of the air inlet must satisfy "In the projection plane perpendicular to the indoor machine through the impeller axis line, the indoor unit air outlet is located on the lower right side, the line connecting the upper end and the lower end, the projection point at the lower end is the origin, and the horizontal axis is the X axis. In the plane rectangular coordinate system established by the vertical number axis as the y-axis, it is located in the fan-shaped interval formed by the angle of 50° in the negative direction of the X-axis and clockwise by 0° to 200°. The substantive meaning of the two is exactly the same. The starting line of the angle of 50° in the negative direction of the X-axis means a straight line that is 50° clockwise from the negative X-axis direction. When the upper end of the air inlet and the lower end of the air inlet meet the positional relationship on the air outlet wall, the air inlet forms a negative pressure region, and the indoor air outside the air inlet is introduced to the cross flow impeller. The heat exchange air in the wind tunnel is mixed to form a gentle cool heat exchange air flowing out of the indoor unit air outlet to achieve the object of the present invention. Otherwise, since the air outlet duct is curved curved toward the axial direction of the cross-flow impeller, the cross-flow impeller refracts the heat exchange air flowing out to ensure that an ideal negative pressure region is formed at the air inlet, and it is possible to form an induced wind and a wind. When the wind occurs at the same time, even if the heat exchange air flows out through the air inlet and cannot be introduced into the indoor air, the object of the invention is not only impossible to realize, but also the heat exchange air in the air duct of the cross flow impeller is shunted and discharged, resulting in the indoor unit. The air volume is insufficient. In the plane rectangular coordinate system established by the plane of the air conditioner indoor unit of the present invention, when the upper end and the lower end are connected, the projection point at the lower end is the origin, and the angle of the positive X direction of the X axis is 50°. When the line is rotated counterclockwise into a sector-shaped section formed by 40° to 160°, the negative pressure region formed by the air inlet of the present invention has the best negative pressure effect, and the object of the present invention can be best achieved.

The invention can also provide a damper that can be opened and closed on the air inlet and controlled to be turned off by the air conditioner remote control, so that the air outlet of the air outlet of the air conditioner is mixed with the air formed by the total heat exchange and the heat exchange air and the indoor air. Any conversion between the winds can meet the requirements of the original cryogenic refrigeration and the need to rapidly heat up the local area during heating, and meet the need to provide a gentle cool heat exchange wind, providing users with flexible choices. Experience mode. Since the air inlet is located on the inner side of the wind tunnel wall, the damper must be placed on the inner side of the air duct wall, and still does not occupy the space outside the wind duct wall.

When the upper end and the lower end of the tuyere of the present invention are staggered to form an air guiding opening, the upper end and the lower end of the tuyere have a plurality of relative positional structures, wherein the upper end is curved toward the air outlet duct, and the lower end is still located in the original end. The staggered arrangement of the cross-flow impeller air duct wall is optimal, so that the air inlets formed are all located in the original cross-flow impeller air duct wall, and do not occupy the space outside the original wind duct wall, and basically It is located on the trajectory of the original wind tunnel wall and has little effect on the wind of the wind tunnel. The original cross-flow impeller air duct wall of the present invention is an outlet duct wall of the cross-flow impeller when there is no opening. Since the air inlet does not have the space and the occluded problem outside the wall of the wind tunnel, the air is fluent and the air volume is sufficient, which eliminates the disadvantage that the air outlet of the D-guided air-inducing component is blocked and the air-inducing effect is poor. When the heat exchange wind flowing out of the cross-flow impeller flows to the indoor air outlet through the inwardly curved air inlet end, the upper end of the air inlet opening and the lower end of the original cross flow impeller air duct wall are formed. The air inlet forms a negative pressure zone, and the indoor air outside the outlet air duct wall is continuously introduced to mix with the heat exchange air in the airflow duct of the cross flow fan to form a soft cool heat exchange air flowing out of the indoor unit. tuyere. The amount of air at this time should be the indoor air introduced by the heat exchange air of the cross-flow impeller and the air inlet. The total air output is increased, but the heat exchange energy is constant, and the heat exchange air is still flowing out of the cross-flow impeller. The energy carried, the heat exchange energy of the indoor unit air outlet is unchanged. If it is in the cooling mode, that is to say, the cooling capacity is constant, the air volume is increased, and the outlet air temperature is appropriately increased, so that the air outlet of the indoor unit air outlet is changed from the human body feeling cold wind to the cool air, and the air outlet becomes soft and comfortable. , thus eliminating the problem of "air conditioning disease". Since the amount of refrigeration carried by the air having an appropriately increased temperature is not reduced, the amount of airflow is increased, the indoor air circulation is accelerated, the time required to reach the set temperature is reduced, and power saving is achieved, thereby achieving the object of the present invention.

The rear side of the air conditioner indoor unit casing is provided with a mounting plate, and the mounting plate is provided with a set of rectangular holes, usually three, and the rectangular opening is generally connected with the indoor air above the indoor unit, and the cross flow impeller volute The outer side of the upper air duct wall is also connected. The rectangular hole is hung on the hook of the metal wall panel, and the wall panel is pre-mounted on the wall, and the indoor unit is suspended on the wall. After the wall panel hook is hung on the rectangular opening of the mounting plate, the rectangular opening still has enough holes to communicate with the indoor. The present invention is provided with an air guiding opening on the air outlet wall of the cross flow impeller volute, so the air inlet It is also connected to the interior. The negative pressure formed by the air inlet can be continuously sucked into the air through the rectangular opening on the mounting plate as a air inlet to mix with the heat exchanged air and then flow out of the indoor air outlet. The hole for hanging on the mounting plate for hooking with the wall panel is a well-known technology. Originally, it only has the function of hanging the indoor unit. After the air inlet of the present invention is installed, the indoor air is introduced into the air duct of the indoor unit. Features. The invention can also open a tuyere on the mounting plate on the rear back surface of the indoor unit casing such that the indoor unit air inlet communicates with the outside of the cross flow impeller volute air outlet duct wall, and the air inlet of the installation board faces the indoor unit air inlet direction The air inlet of the existing air-conditioning indoor unit is used to introduce the indoor air through the air outlet opened on the mounting plate to reach the air inlet of the present invention, and the air inlet direction of the indoor air inlet is shown in FIG. 1 . The above two types of air guiding methods for connecting the air inlet to the indoor compartment are not re-arranging the air outlet on the indoor unit casing, that is, an additional air inlet is provided on the casing of the D patent, and the rectangular opening on the mounting plate is located at the top of the indoor unit. The position of the wall is separated from the indoor air outlet of the indoor unit by the air inlet of the indoor unit, and the angle of the air inlet of the opening is greater than 90° with the air outlet direction of the indoor unit, so that it is impossible to generate an air outlet of the indoor unit to return to the mounting plate. The possibility of the opening of the opening or the opening of the tuyere eliminates the disadvantage that the D patent can not only reduce the recirculation when opening the additional air inlet, but also increase the time and energy consumption required for the indoor air to reach the set temperature. In order not to affect the suspension strength of the indoor unit casing mounting plate and to obtain the required indoor air, a plurality of air outlets may be opened on the mounting plate, preferably in a manner of a small circular opening that is not connected.

The volute of the cross-flow impeller is a one-time injection molded part, and an air guiding opening is formed on the air outlet duct wall of the cross-flow impeller volute, only one upper end is bent into the air outlet duct, and the lower end is still located in the original cross flow. The rectangular air inlet on the wall of the impeller air outlet duct can be generated during the injection molding of the volute of the cross flow impeller, so the production cost is not increased. Similarly, the air outlet is provided on the indoor unit casing mounting plate, and can also be formed when the indoor unit casing mounting plate is formed once, without increasing the production cost.

The center line of the two long end ends of the rectangular air inlet should be parallel with the axial line of the cross flow impeller, so that the introduced indoor air and the heat exchange air in the air duct of the cross flow impeller are sufficiently uniformly mixed. A plurality of connecting support bars may be arranged between the upper and lower ends of the rectangular air inlet to form a harmonical shape to improve the strength of the rectangular air inlet and reduce the vibration which may occur when the air flows at a high speed. The heat exchange air flowing out from the cross-flow impeller flows out of the air duct through the refracting on the wall of the air outlet duct, and the lower end is still located on the wall of the original cross-flow impeller air duct, between the upper and lower ends of the rectangular air inlet The vertical distance is controlled within 10mm, and the change of the refraction angle is small, which ensures that the condensed air flows smoothly to the indoor air outlet, thereby ensuring that the air intake is sufficiently introduced without reducing the wind pressure. The purpose of the wind. The vertical distance between the upper and lower ends of the rectangular air inlet is the starting point of the lower end, and the normal line of the outlet air duct wall where the lower end is located to the upper air outlet duct wall or the upper side outlet air duct wall arc The straight line distance at which the line extension lines intersect. When the vertical distance between the upper and lower ends of the rectangular air inlet is controlled within 4 mm, the air exchange direction of the heat exchange air flowing out of the cross flow impeller is almost parallel to the original wind refraction direction. The air inlet has a large amount of air, which has no effect on the wind of the cross-flow impeller. Because the air inlet of the present invention does not occupy the space outside the wall of the air duct, and does not collide with the tube outside the wall of the air duct, the line is collided and blocked, and the present invention can be used in the cross-flow impeller volute. An air inlet is provided at any position on the entire section of the outlet duct wall, and a plurality of air inlets may be provided on the entire section of the outlet duct wall to improve the uniformity of the amount of induced air and the wind entering the air duct, and does not exist. In the D patent, the opening 71 must be defined at a specific suitable position of the rear volute, otherwise it is difficult to avoid the problem of uneven air blowing and insufficient air volume.

The indoor air duct of the cross-flow impeller for heat exchange is narrow, and it is difficult to accommodate the usual inward air blowing device including the air-inducing component of the D patent, even if the normal air blowing device is not provided. The outlet air duct will also be squeezed into the blockage, changing the direction of the cross-flow impeller to refract the wind, which seriously affects the wind. Therefore, the technicians in the field of air-conditioning technology generally have a common understanding of the air-conditioning indoor air outlet duct. As described in the background of the present specification, it is not possible to provide an additional air blowing device. The invention overcomes this technical prejudice, and a special structure air guiding opening is arranged in the air outlet duct, which can not only provide additional air supply for the air outlet duct, but also increase the air volume, and does not generate air output to the air outlet duct. Bad effects.

A rectangular tuyere is opened inward on the wall of the cross-flow impeller air outlet duct, and the relative positional relationship between the shape of the upper and lower long ends of the rectangular tuyere is specifically designed, so that the rectangular tuyere itself has an induced wind. The function of the air inlet, there is no need to set up another air intake component. Without the air-inducing component, there is no problem that the air duct is crowded and blocked, which seriously affects the wind, so that the invention aims to solve the problem that the wind is not soft enough, the air volume is small, and the production cost is also achieved. The object of the invention is carried out without any increase. The technical solution proposed in the claim of the D patent is to form an opening in the rear volute of the air supply duct of the cross-flow fan, and "form a wind-guiding assembly having an air-leading opening on the opening", The air component provides an air vent, which not only has a complicated structure, but also requires installation space and an increase in production cost.

The invention provides a technical solution specially proposed for an air-conditioning indoor unit that adopts a cross-flow impeller to enter and exit the wind, and is a technical solution implemented on an indoor air flow duct air outlet duct wall. That is, the technical features of the present invention each include a cross flow impeller.

Due to the adoption of the above technical solutions, the present invention has the following advantages and positive effects:

1. The invention has the advantages of forming a mixed air with a small temperature difference between the indoor air supply duct of the air conditioner and sending it to the room and increasing the air volume of the indoor unit, fully achieving the object of the invention of the D patent and being superior to the patent invention of D. Purpose technical effect.

2. The invention solves the problem that the D-patent has the principle that the air-inducing component is difficult to be ideal and the additional air inlet brings a serious backflow problem.

3. The invention can be implemented on the basis of the existing air-conditioning indoor unit without increasing the cost, and the market competitiveness of the air conditioner is greatly improved.

4. The present invention overcomes the technical bias that the air supply device cannot be installed in the airflow duct of the cross-flow impeller of the air conditioner indoor unit.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS

2 is a perspective view showing the structure of the air outlet of the air outlet duct of the present invention.

Figure 3 is a plan orthogonal coordinate system in which the projection point of the lower end of the present invention is the origin.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

1 in Figure 2 is an indoor unit casing, 2 is an indoor unit air inlet, 3 is a wall, 4 is a wall panel, 5 is a heat exchanger, and 6 is a tuyere on the indoor unit mounting plate, 7 is Indoor unit mounting plate, 8 is a cross-flow impeller, 9 is a cross-flow impeller volute, 10 is a cross-flow impeller axis, 11 is the original wind tunnel wall trajectory, 12 is the upper end of the air inlet, 13 is the air inlet, 14 For the lower end of the air inlet, 15 is a cross-flow impeller air duct wall, 16 is a cross-flow impeller air duct, 17 is an indoor unit air outlet, and 18 is a connecting support bar.

1 in FIG. 1 is an indoor unit casing, and the cross-flow impeller air outlet duct 16 is an indoor unit air outlet duct, and the cross-flow impeller air outlet duct wall 15 is an indoor unit outlet duct wall. A heat exchanger 5, a cross flow impeller 8, a cross flow impeller volute 9 and a cross flow impeller air outlet 16 are disposed in the indoor unit casing 1. When the indoor unit is in operation, the cross flow impeller 8 rotates through the indoor unit. The air inlet 2 draws in indoor air, and the inhaled indoor air is exchanged by heat. After the heat exchange of the heat exchanger 5 forms a heat exchange air, the cross-flow impeller 8 passes through the cross-flow impeller air outlet duct 16 and flows through the upper end 12 of the air guiding opening 13 at the upper end 12 of the air guiding opening 13 and the lower end 14 of the air guiding opening 14 A negative pressure region is formed, and the outdoor air passes through the indoor air inlet 2 and the air outlet 6 on the indoor unit mounting plate, and is sucked into the air inlet 13 to mix with the heat exchange air in the cross flow impeller air outlet 16 to form a soft heat exchange. The air flows from the indoor unit air outlet 17 to the room. If the tuyere 6 is not provided on the indoor unit mounting plate, the air inlet 13 draws in the outdoor air through a set of rectangular openings for hanging from the wall panel to communicate with the indoor air. The method of inhaling indoor air by the two types of air inlets may adopt one of the methods or the simultaneous use depending on the amount of air intake. When the damper is provided on the air vent 13, the damper is closed, and the heat exchange air flowing out of the indoor air outlet 17 is exactly the same as the heat exchange air flowing out from the air outlet of the original air conditioner indoor unit. Two air outlet modes are available for users to use. The direction of the arrow in Figure 2 of Figure 1 is the direction of air flow. A plurality of upper and lower end connection support bars 18 may be provided to improve the strength and vibration resistance of the air intake opening 13. The original wind tunnel wall trajectory 11 is the original wind tunnel wall projection line. For the sake of distinction, the original wind tunnel wall trajectory changed due to the setting of the air inlet 13 is indicated by a broken line.

2 is a schematic perspective view showing the structure of the air inlet of the wind tunnel of the present invention, which visually shows the structure and the air intake of the air inlet of the present invention on the air duct wall.

3 is a plane rectangular coordinate system in which the right side view of the air conditioner indoor unit is a plane, and the projection point of the lower end is the origin, wherein the sector region marked with 0° to 200° is the upper end and the lower end of the air inlet. The setting area of the line.

Claims

The utility model relates to an air conditioner indoor unit, which comprises a cross-flow impeller air outlet duct and a cross-flow impeller air outlet duct wall, wherein: the cross-flow impeller air outlet duct wall has a tuyere on the volute, and the upper end and the lower side of the tuyere The end is staggered to form an air guiding opening, which is perpendicular to the indoor machine through the impeller axis line, the indoor unit air outlet is located on the left side of the projection plane, the upper end and the lower end of the line, the projection point at the lower end is the plane rectangular coordinate system origin The fan-shaped section formed by rotating the angle of 50° in the positive direction of the X-axis from 0° to 200° counterclockwise.
The utility model relates to an air conditioner indoor unit, which comprises a cross-flow impeller air outlet duct and a cross-flow impeller air outlet duct wall, wherein: the cross-flow impeller air outlet duct wall has a tuyere on the volute, and the upper end and the lower side of the tuyere The end is staggered to form an air guiding opening, which is perpendicular to the indoor machine through the impeller axis line, the indoor unit air outlet is located on the left side of the projection plane, the upper end and the lower end of the line, the projection point at the lower end is the plane rectangular coordinate system origin The fan-shaped section formed by rotating the angle of 50° in the positive direction of the X-axis from 40° to 160° counterclockwise.
The air conditioning indoor unit according to claim 1 or 2, wherein a wind outlet is formed on the mounting plate on the rear side of the casing of the indoor unit.
The air conditioning indoor unit according to claim 1 or 2, wherein the air inlet is communicated with the indoor air through a hole in the mounting plate.
The air conditioner indoor unit according to claim 1 or 2, wherein the air vent is provided with a damper that can be opened and closed.
The air conditioning indoor unit according to claim 1 or 2, wherein the vertical distance between the upper and lower ends of the air inlet is less than 10 mm.