WO2017049588A1

WO2017049588A1 - Indoor unit of air conditioner

Info

Publication number: WO2017049588A1
Application number: PCT/CN2015/090730
Authority: WO
Inventors: 孙海潮
Original assignee: 孙海潮
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-03-30

Abstract

An indoor unit of an air conditioner, comprising an air outlet duct (16) of a crossflow impeller and an air outlet duct wall (15) of the crossflow impeller. An air drafting opening (13) is provided on the crossflow impeller air outlet duct wall (15). In a projection plane on which the upper extremity (12) and the lower extremity (14) of the air drafting opening (13) are perpendicular to the axis line of the crossflow impeller of the indoor unit and on which an air outlet (17) of the indoor unit is provided at the lower left side, the clockwise angle (131) between the line running from the upper extremity (12) to the lower extremity (14) and the positive direction segment of a tangent (130) to the air outlet duct wall with the upper extremity (12) serving as the point of tangency is greater than or equal to 0° and less than or equal to 220°.

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 air-conditioning indoor air outlet ducts are all closed air ducts, and the heat exchange air is isolated from the indoor air outside the air outlet ducts before being blown out. Therefore, all the blown air ducts are blown out by heat exchange. wind. Especially in the cooling mode, the temperature difference between the inlet and outlet of the air conditioner indoor unit reaches 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 intermittently turned on and off around the set temperature. Adjusting the working condition of the room temperature, the outlet air temperature of the indoor unit is lower, and the human body is subjected to such direct blow of the indoor unit, and it will feel very cold, and is often subjected to the direct blow of the indoor unit with excessive temperature difference. It will be called the "air conditioning disease", which is especially problematic in the elderly, the sick and the disabled, and the children's users. 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 refracted 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. The 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 direction of the wind refraction of the cross-flow impeller, which seriously affects the wind pressure and the 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 design the air supply device to be located outside the air outlet of the indoor unit, and for this purpose, a plurality of air guiding devices such as upper and lower air guiding, left and right air guiding, and diversion air guiding are provided. There are also thousands of patented technical documents for the air guiding device on the outside of the indoor air outlet. The purpose is one to improve the temperature difference in the area and reduce the influence of cold air blowing. Chinese Patent No. 2014207299611, entitled "A Split Wall-mounted Air Conditioner" (abbreviated 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 object of the invention of D patent has two points: 1. The mixed air with a small temperature difference between the air supply duct and the indoor air is sent to the room, and the mixed air with a small temperature difference is blown onto the human body, feeling cool without 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, reducing the indoor air to reach the set temperature Time and energy consumption. However, the technical solution of the D patent has three shortcomings: 1. The space formed by the outer side of the air duct of the air conditioner indoor unit and the casing of the indoor unit is the only air conditioner connecting pipe and air conditioning drain pipe which can be used to set the thick heat insulating pipe. And the place where the power line is connected to the outdoor unit, the pipes and lines 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, and the existing air conditioner indoor unit is beautiful or cost-effective. In terms of the above, all 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. Even if the air-inducing component is forcibly set, the air-inlet of the air-inducing component will be blocked by the air-conditioning connecting pipe wrapped by the heat-insulating pipe, the air-conditioning drain pipe and the power cable will be blocked by the air-conditioning and the wind will be poor, the air volume will be insufficient, and even the wind will be induced. The lead-style grid in the assembly is held against the closed air inlet and cannot attract the wind. The technical effect of the first invention of the D patent will be poor, and the third patent specification is D. 0026 emphasized the opening paragraph 71 must be limited to a particular segment in position 7 and the volute defining openings at both ends of the distance, it has been implicitly described patent D this problem 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. When entering and exiting two air outlets, only 135mm-200mm apart, especially the inlet and outlet air inlet and outlet angles are less than 90°, and the backflow problem is unavoidable and serious. 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 an air conditioner indoor unit, which solves the problem that the existing air conditioner indoor unit is not soft enough, and the air supply volume is small, that is, the D patent invention is completely achieved, and the invention of the D patent is solved. The poor wind induction effect of the wind 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 on the air duct wall The air inlet is opened, and the upper end and the lower end of the air inlet are perpendicular to the axial center of the indoor machine, and the air outlet of the indoor unit is located in the lower left projection plane. The upper end to the lower end are tangent to the upper end. The clockwise angle of the positive direction of the tangential wall of the outlet duct wall is greater than or equal to 0° to less than or equal to 220°.

The object of the present invention can also be achieved by an air conditioner indoor unit including 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 upper side and the lower end of the air inlet are perpendicular to the axial line of the indoor flow through the impeller, and the indoor air outlet is located in the lower left projection plane, and the upper end to the lower end are cut and the upper end is cut. The clockwise angle of the positive direction of the tangential wall of the outlet duct wall is greater than or equal to 90° to 180° or less.

In the air conditioning indoor unit as described above, an air outlet is formed in the indoor unit casing above the indoor unit mounting plate.

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 6 mm.

The air conditioner 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 air outlet duct, and the cross-flow impeller air duct has four walls. That is, the cross-flow impeller air outlet duct wall, generally the cross-flow impeller air outlet duct is composed of the volute tongue and the volute of the air outlet duct portion, and the air inlet of the present invention is disposed on the volute of the cross-flow impeller air outlet duct wall Above, that is, the so-called cross-flow impeller is generally referred to as an air outlet duct wall volute. Therefore, the cross-flow impeller air duct wall of the present invention is provided with an air guiding port which is a cross-flow impeller air duct wall. An air inlet is provided on the volute. 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 air inlet opening on the impeller air duct wall is also corresponding to the rectangle with the long center line parallel thereto. Referring to Figure 3, the two long end ends of the rectangular air inlet are oriented in the direction of the wind direction of the cross-flow impeller air duct, and along the line 15 of the air duct, firstly located on the 15 line of the air duct. The long side of the rectangular air inlet is the upper end A, and the other long side is the lower end B.

The invention is perpendicular to the axial center of the indoor flow impeller, and the projection plane of the indoor air outlet on the lower 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 outlet of the indoor unit is located on the lower left side, that is, the direction of the cross-flow impeller is the lower left side.

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 design of the cross-flow impeller duct. The profile of the air outlet duct of the impeller is curved curved toward the axial direction of the cross-flow impeller. Therefore, if only a rectangular air outlet is simply opened on the original air outlet duct wall, the air flowing out of the cross-flow impeller will It will directly form a positive pressure at the tuyere against the tuyere, and it is impossible to achieve the purpose of introducing indoor air. Therefore, the relative positional relationship between the upper end and the lower end of the rectangular tuyere on the outlet duct wall must satisfy the specific "in the plane perpendicular to the axis of the indoor machine through the impeller, and the indoor unit outlet is located in the lower left projection plane. The technical feature of the line connecting the upper end to the lower end and the upper end end of the tangential air duct wall tangential line is greater than or equal to 0° to less than or equal to 220°. Referring to FIG. 3, the connection line from the upper end projection point A to the lower end projection point B is the line connecting the upper end to the lower end, and the upper end end is the cut point of the outlet air duct wall tangent line refers to the above edge projection point A For the tangent point, the exit wind tunnel wall 15 line where the upper end is located is the tangent of the tangent point at the upper end projection point A, that is, 130 in FIG. 3, and 161 in FIG. 3 is the cross-flow impeller wind direction. The direction of the tangential line 130 is the same direction as the tangential direction of the cross-flow impeller, and the line segment passing the tangent point A and the cross-flow impeller wind direction 161 is the tangential positive direction segment, and vice versa. segment. The clockwise angle refers to the line connecting the projection point A from the upper end to the projection point B at the lower end with the tangent point A as the origin, and clockwise to the angle with the positive direction of the tangent, that is, 131, 131 in FIG. The direction of the arrow in the arrow is marked as clockwise. If in the left view of the air conditioner indoor unit, the clockwise angle is the counterclockwise angle, and the two properties are the same. When there is a special case where the profile of the wind tunnel wall is a straight line, the straight line formed by the wall line of the outlet duct is the cut line of the outlet duct wall with the upper end being the tangent point, when the upper end of the air inlet is to the lead When the lower end of the tuyere satisfies such a positional relationship on the wind tunnel wall, the air inlet can form a negative pressure region, and the indoor air outside the air inlet is introduced to exchange heat with the cross-flow impeller air duct. The purpose of the present invention is achieved by forming a gentle cool heat exchange air flowing out of the indoor unit air outlet. 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 a complete negative pressure region is formed at the air inlet, and it is possible to form an induced and outgoing air. 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. When the air intake opening is provided to satisfy the above technical features, the upper and lower ends of the air intake are Falling in a sectoral area, and thus there are many relative positional structural schemes, and some of the structural schemes provide an air guiding effect that is not ideal, and is only perpendicular to the axial flow of the impeller of the indoor unit, and the indoor unit is out. The tuyere is located in the projection plane on the lower left side, and the clockwise angle between the line connecting the upper end and the lower end and the positive end of the tangential air duct wall of the upper end is set to be greater than or equal to 90° to 180° or less. In the range, the negative pressure effect of the negative pressure region formed by the air inlet of the present invention is optimal, and the object of the present invention can be best achieved. The technical solution of the present invention can also be applied to the more extreme design of the profile of the outlet duct wall of the cross-flow impeller which is curved in the direction of the axis of the cross-flow impeller. The extreme design here is a normal design in which the profile of the outlet duct wall of the cross-flow impeller is curved curved toward the axial direction of the cross-flow impeller.

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 air inlet is opened on the volute of the wind tunnel wall of the cross-flow impeller of the present invention, the upper end and the lower end of the air inlet have a plurality of relative position structures, wherein the upper end is curved toward the air duct. The lower end is still located on the wall of the original cross-flow impeller air duct, and the staggered arrangement is optimal. The air inlets thus formed are all located in the original cross-flow impeller air duct wall, and do not occupy the original air duct. The space outside the wall is basically located on the wall of the original wind tunnel, 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 the air inlet is not opened. Because 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 air inlet of the D patented air intake component being blocked by the wind and the wind guiding effect is poor. Disadvantages. 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 cross-flow impeller air duct 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 air outlet is unchanged. If it is in the cooling mode, that is, the cooling capacity is constant, the air volume is increased, and the air temperature is appropriately increased, so that the air outlet of the indoor unit is ventilated. The human body feels that the cold wind turns into a cool breeze, and the wind 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 is equipped with a mounting plate. Usually, the mounting plate is provided with a set of rectangular openings, usually 2 to 3, and the rectangular opening is communicated with the indoor air above the indoor unit, and on the cross-flow impeller volute The outer side of the 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. In addition, under normal circumstances, between the mounting plate and the cross-flow impeller volute of the air intake indoor unit, the air-conditioning indoor unit casing in the vertical direction between the mounting plate and the wall panel There will also be gaps and openings in the air. The existing air conditioner also has a design of a through-hole impeller on the cross-flow impeller of the indoor unit. The gaps and the openings on the mounting plate are all existing air-conditioning indoor units. It is in communication with the outer side of the air outlet duct wall on the cross-flow impeller volute, so there is no need for a special additional air inlet arrangement, and the existing air conditioner indoor unit is utilized. Technically, the negative pressure formed by the air inlet can continuously attract indoor air through the gaps and openings as air inlets to mix with the heat exchanged air and then flow out of the indoor air outlet. The air conditioning indoor unit of the present invention includes the prior art technical features of these air conditioning indoor units. The hole for hanging with the wall panel is a well-known technique. Originally, it only has the function of hanging the indoor unit. After the air inlet of the present invention is installed, the air inlet is introduced into the indoor air duct. The invention can also enlarge the air inlet amount of the air inlet of the invention by adding a tuyere on the indoor unit casing above the indoor unit mounting plate. The above two types of air-inducing means that connect the air inlet to the indoor air are used to introduce the gaps, holes and air outlets of the indoor air, which are located at the top of the indoor unit against the wall, and the gap and the opening and the air outlet and the indoor air outlet have an indoor The air inlets of the machine are separated, and the air inlet direction and the indoor air outlet direction angle are greater than 90°, so it is impossible to generate the possibility that the air outlet of the indoor unit is returned to the gaps and the openings and the tuyere, thereby eliminating the D patent opening. When the additional air inlet brings back the flow, not only can it not reduce, but it will increase the time and energy consumption of the indoor air reaching the set temperature.

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. In the same way, the air outlet is opened on the indoor unit casing above the indoor unit mounting plate, and can also be formed when the indoor unit casing is formed at one time, and the production cost is also not increased.

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 of the cross-flow impeller is circulated out of the air duct on the wall of the air outlet duct. When the vertical distance between the upper and lower ends of the rectangular air inlet is controlled within 12 mm, the change of the refraction angle is small. It can ensure that the condensed air flows smoothly to the indoor air outlet, thereby ensuring that the air inlet is sufficiently ventilated without reducing the wind pressure. The vertical distance between the upper and lower ends of the rectangular air inlet refers to the following edge as the starting point. The normal line of the outlet air duct wall where the lower end is located to the upper side air outlet duct wall or the upper side outlet wind duct wall arc The straight line distance at which the extension lines intersect. When the vertical distance between the upper and lower ends of the rectangular air inlet is controlled within 6 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 intake of the tuyere is larger, and there is no influence on the airflow 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 collides and is blocked by the wind, the present invention can be used in the cross flow impeller An air inlet is provided at any position on the full wall section of the air duct wall of the shell, and 3 to 8 or more air inlets may be provided on the entire wall section of the air duct wall to increase the air volume and the air intake. Uniformity in the air duct, there is no need in the D patent to define the opening 71 in a specific suitable position of the rear volute, otherwise it is difficult to avoid the problem of uneven air 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 port 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 without occupying the air duct, and does not wind out the wind. The wind of the road has an adverse effect.

A rectangular tuyere is opened inward on the wall of the cross-flow impeller air outlet duct, and the relative positional relationship between the upper and lower long side ends of the rectangular tuyere is specially designed, so that the rectangular tuyere itself has the function of introducing air. The air inlet is no longer necessary to set up the air intake component. No air intake components, also There is no problem that the wind tunnel is crowded and blocked, which seriously affects the wind. Therefore, the invention aims to solve the problem that the wind is not soft enough, the air volume is small, and the production cost is not increased. The purpose of the invention. 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. The invention can also be applied to an air conditioner indoor unit adopting centrifugal impeller inlet and outlet air. At this time, the cross flow impeller is replaced by a centrifugal impeller, and the cross flow impeller air outlet duct wall is replaced by a centrifugal impeller air outlet duct wall, and the cross flow impeller is discharged. The volute of the air duct wall is replaced by the volute of the air duct wall of the centrifugal impeller, and the implementation method is the same as that of the air conditioner indoor unit of the cross-flow impeller entering and exiting the air, and the object and effect of the present invention can also be achieved.

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 duct and the indoor air supply and increasing the air volume of the indoor unit in the air outlet of the air conditioner indoor unit, and fully achieves the object of the invention of the D patent and is superior to the patent invention of D. Purpose technical effect.

2. The invention solves the problem that the D-invention has a poor air-inducing effect of the air-inducing component and a serious backflow problem caused by the additional air inlet.

3. The present invention can implement the present invention on the basis of the existing air-conditioning indoor unit without increasing the cost, and greatly improve the market competitiveness of the air conditioner.

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 schematic illustration of the clockwise angle of the line connecting the upper end to the lower end of the present invention and the positive end of the tangential line of the outlet duct wall at which the upper end is a tangent point.

detailed description

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

Figure 1, Figure 2, Figure 3, 1 is the indoor unit casing, 2 is the indoor unit air inlet, 3 is the wall, 4 is the wall panel, 5 is the heat exchanger, 6 is the flow impeller volute Hole, 7 is the indoor unit mounting plate, 8 is the cross-flow impeller, 9 is the cross-flow impeller volute, 10 is the 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, 130 is the tangential line of the outlet duct wall with the upper end being the tangent point, and 131 is the clockwise angle of the line connecting the upper end to the lower end and the upper end being the tangent point of the tangential section of the outlet duct wall, 14 For the lower end of the air inlet, 15 is the cross-flow impeller air duct wall, 16 is the cross-flow impeller air duct, 161 is the cross-flow impeller air direction, 17 is the indoor unit air outlet, 18 is the connecting support bar, A For the upper edge projection point, B is the lower edge projection point.

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 sucked indoor air is heat-exchanged by the heat exchanger 5 to form heat exchange air, and then passes through the cross flow impeller 8 in the cross flow impeller air outlet duct 16 and flows through the upper end 12 of the air inlet. A negative pressure region is formed between the upper end 12 of the air guiding opening 13 and the lower end 14 of the air guiding opening, and the outdoor air passes through the indoor air inlet 2 and the cross flow impeller volute opening 6 and is sucked into the air guiding opening 13 The heat exchange air in the cross flow impeller air outlet duct 16 is mixed to form soft heat exchange air, and is flowed into the room from the indoor unit air outlet 17. The line connecting the projection point A from the upper end to the projection point B at the lower end is the connection from the upper end to the lower end, and has the same connection property as the connection between the upper end 12 of the air inlet 13 and the lower end 14 of the air inlet. If there is no cross-flow impeller volute hole 6, the air inlet 13 is sucked into the room through a set of rectangular openings on the mounting plate for hanging with the wall panel and the existing gaps and openings in the air conditioner indoor casing to communicate with the indoor air. 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 cross-flow impeller volute of Figure 1 is overlapped with the indoor unit mounting plate for the reason of the drawing. In fact, there is a gap separation. The cross-flow impeller volute hole 6 is indicated on the cross-flow impeller volute. There are vents and do not involve adjacent indoor unit mounting boards. Figure 1, Figure 2, and the direction of the arrows in Figure 4 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, that is, the profile line in the present invention. For the sake of distinction, the original wind tunnel wall trajectory changed by the setting of the air inlet 13 is indicated by a broken line, and the upper end projection point A is the tangent point of the tangential line of the outlet duct wall with the upper end being the tangent point. The line connecting the projection point A from the upper end to the projection point B at the lower end is the connection from the upper end to the lower end.

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.

Claims

An air conditioner indoor unit 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 is provided with an air guiding opening, and the upper end and the lower end of the air guiding port In the projection plane perpendicular to the indoor machine through-flow impeller axis line, the indoor unit air outlet is located on the lower left side, the line connecting the upper end to the lower end and the upper end being the tangent point of the tangential section of the outlet duct wall The angle is greater than or equal to 0° to less than or equal to 220°.
An air conditioner indoor unit 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 is provided with an air guiding opening, and the upper end and the lower end of the air guiding port In the projection plane perpendicular to the indoor machine through-flow impeller axis line, the indoor unit air outlet is located on the lower left side, the line connecting the upper end to the lower end and the upper end being the tangent point of the tangential section of the outlet duct wall The angle is greater than or equal to 90° to less than or equal to 180°.
The air conditioning indoor unit according to claim 1 or 2, wherein an air outlet is formed in the indoor unit casing above the indoor unit mounting plate.
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 6 mm.