WO2017049447A1 - Mixed air output indoor unit of air conditioner - Google Patents

Abstract

A mixed air output indoor unit of an air conditioner, comprising an indoor unit housing (1), an air outlet duct (17) of a crossflow impeller (7), and an air outlet duct wall (16) of the crossflow impeller (7). An air drafting opening (12) is provided on the air outlet duct wall (16) of the crossflow impeller (7). The clockwise angle (131) between a projected line of the air drafting opening (12) in a projection plane perpendicular to the axis line (9) of the crossflow impeller (7) of the indoor unit and on which an air outlet (18) of the indoor unit is located at the lower left side and the positive direction segment of a tangent (130) to the air outlet duct wall (16) with a point at where the air outlet duct wall (16) is intersected serving as the upper point of tangency is greater than or equal to 10° and less than or equal to 200°. A vent (14) is provided on a side plate of the indoor unit housing (1). An air drafting fan (15) is provided on the vent (14) on the side plate of the indoor unit housing (1).

Description

Air conditioner mixing air outlet 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 purpose of the invention of the D patent is twofold: 1. The mixed air with a small temperature difference between the air supply duct and the room is sent to the room, and the mixed wind with a small temperature difference is blown onto the human body, feeling cool. It is not cold, softer and more comfortable, and improves the user's comfort experience. 2. Increases the air supply volume of the indoor air outlet, which helps to speed up the indoor air flow speed and uniformity, and reduces indoor air to reach the setting. The time and energy required for temperature. However, D's patented technical solution has the disadvantages: the space formed by the outside of the 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 thick insulated pipe 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 insufficient, the air volume is insufficient, and even the air intake component may appear. The style grid is blocked by the closed air inlet and cannot lead to the wind. The technical effect of the D patent invention will also be poor. Emphasizing that the opening 71 must be defined at a suitable position of the specific section of the rear volute 7 and the definition of the distance between the two ends of the opening, it has been implicitly stated that the technical solution of the D patent has this problem. In fact, the D patent "leading style grid... The second portion of the air duct direction is curved. Regardless of the angle setting, as long as it is located outside the original wind duct profile line, a part of the wind coming out of the cross flow impeller is refracted to the wind. Outside the air duct wall, the air-inducing component can not form a complete negative pressure, and not only does it have a reference effect but forms an air, which is impossible to achieve the purpose of the invention of the D patent.

Summary of the invention

1. The object of the present invention is to provide an air conditioner mixed air outlet 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 D patent is solved. There is a problem that the induced drafting component has a poor air guiding effect.

The object of the present invention is achieved by the following methods: an air conditioner mixing air outlet indoor unit, including an indoor unit casing, a cross flow impeller air outlet duct, and a cross flow impeller air outlet duct wall, characterized in that: An air guiding opening is formed on the wall of the flow impeller air outlet duct, the air guiding opening is perpendicular to the axis line of the indoor machine through the impeller, and the projection line in the projection plane of the indoor unit air outlet is located at the lower left side, intersecting the wind tunnel wall The clockwise angle of the positive direction of the tangential line of the outlet duct wall of the upper cut point is greater than or equal to 10° to 200° or less, and the air outlet is opened on the side panel of the indoor unit casing, and is disposed on the side panel of the indoor unit casing. An air intake fan is provided.

The object of the present invention can also be achieved in such a manner that an air conditioner mixing air outlet indoor unit includes an indoor unit casing, a cross flow impeller air outlet duct, and a cross flow impeller air duct side plate, which is characterized in that The air outlet is provided on the side panel of the indoor unit casing and the side wall of the cross-flow impeller air outlet, and the air outlet of the side panel of the indoor unit casing or the tuyere of the cross-flow impeller outlet duct is provided with a guide. Wind fan.

The air inlet fan disposed on the tuyere of the present invention is an axial fan or a centrifugal fan.

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 cross-flow impeller air duct is generally The vortex tongue and the volute of the wind duct part and the side plates form a rectangular air duct. When the volute tongue and the volute are arranged in front and rear, the two side plates are divided into two left and right sides, and the left and right sides of the board will be the volute tongue and After the volute is connected to the air duct with a rectangular cross section, the volute tongue and the volute of the cross flow impeller are the cross duct impeller air duct wall, and the other two sides are the cross flow impeller air duct side plate, adopting the cross flow. The indoor unit of the impeller enters and exits the air is rectangular, usually the air is blown above the casing of the indoor unit, and the air is discharged from the lower side. The left and right sides of the casing are the side plates of the indoor unit casing, and the air inlet of the present invention is disposed on the wall of the cross-flow impeller. The volute, which is commonly referred to as the cross-flow impeller, is disposed on the rear volute of the air duct wall. Therefore, the cross-flow impeller of the cross-flow impeller of the present invention is provided with an air guiding port which is a cross-flow impeller. An air guiding opening is formed on the volute of the road wall, and the wind tunnel wall of the cross flow impeller of the present invention is Tuyere opening cited technical solution, which defines the outlet side of the indoor unit housing an impeller located in the cross flow path wall outside air damper chamber corresponding In the technical solution of the side wall of the cross-flow impeller air outlet duct of the present invention, the air outlet of the side panel of the indoor unit casing is located in the indoor unit casing corresponding to the air outlet duct. Side panel. 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 FIG. 3, the rectangular air guiding port is perpendicular to the indoor machine through the impeller axis line, and the indoor unit air outlet is located in the projection plane in the lower left side of the projection plane, and the cross-flow impeller air duct air outlet direction 161 For the direction, along the 16-line of the outlet duct, the point at which the first line intersects the 16-line of the outlet duct is the upper point A intersecting the wall of the outlet duct, and the corresponding point is the wind. The undercut point B where the wall intersects. In addition, the air inlet opening of the cross-flow impeller air outlet duct wall may also be circular, elliptical, square and other shapes, as long as the air inlets are perpendicular to the axial flow of the indoor machine, the indoor air outlet The projection line in the projection plane on the lower left side, the point intersecting the wind tunnel wall, the clockwise angle of the positive direction of the tangential line of the outlet duct wall of the upper cut point is greater than or equal to 10° to less than or equal to 200°. .

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. For example, only an air inlet is simply opened on the original air duct wall, and the upper and lower points of the air inlet are cut. Still located on the arc-shaped curved air duct wall, the air flowing out from the cross-flow impeller will directly flow toward the air inlet at the air inlet, and it is impossible to achieve the purpose of introducing indoor air. Therefore, the relative positional relationship between the upper cut point of the air inlet and the lower cut point on the air outlet duct wall must be satisfied. The air intake is perpendicular to the axial center of the indoor machine, and the indoor air outlet is located. The projection line in the projection plane on the lower left side, the point intersecting the wall of the outlet duct is the clockwise angle of the positive direction of the tangential line of the outlet duct wall of the upper tangent point is greater than or equal to 10° to 200° or less. The technical features can form a fully negative pressure draft. Referring to Figure 3, the line connecting the upper tangent point A to the lower tangent point B is the projection line composed of the upper tangent point and the lower tangent point, and the intersection point of the outlet duct wall is the upper cut point of the outlet duct wall tangent. It means that the above-mentioned tangent point A is a tangent point, and the 16-line line of the outlet duct wall where the above-mentioned tangent point is located is the tangent of the tangent point at the upper tangent point A, that is, 130 in FIG. 3, and 161 in FIG. The direction of the flow direction of the impeller is tangential, and the direction of the arrow tangential line is the same direction as the tangential direction of the cross-flow impeller. The line segment of the tangent point A on the over-cutting line and the direction 161 of the cross-flow impeller is the tangential direction. Otherwise, it is the tangential negative direction segment. The clockwise angle refers to the line connecting the upper cutting point A to the lower cutting point B. The cutting point A is the origin, and the clockwise direction is turned to the angle with the positive direction of the tangent line, that is, the arrow in 131, 131 in FIG. The direction 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 the profile of the wind tunnel wall is a straight line, the straight line formed by the wind duct wall profile is the cut line of the outlet duct wall where the upper cut point A is located. When the upper cut point of the air inlet to the lower cut point of the air inlet meets 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 passes through the indoor casing side. The tuyere opened on the plate is introduced to mix with the heat exchange air in the cross-flow impeller air duct to form a gentle mixed 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 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 inlet is opened on the volute of the wind tunnel wall of the cross-flow impeller of the present invention, the upper cut point and the lower cut point of the air inlet have a plurality of relative position structures, wherein the above cut point is bent into the air duct. The lower cut point 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 wind. The space outside the wall of the road 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. 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. When the heat exchange wind flowing out of the cross flow impeller flows to the indoor air outlet through the inwardly curved air inlet opening point, the upper cut point of the air inlet opening inward and the lower cut still located on the original cross flow impeller air outlet duct wall The air inlet of the point forms a negative pressure zone, and the indoor air is introduced into the air inlet through the air inlet opened on the side panel of the indoor unit casing, and is mixed with the heat exchange air in the air duct of the cross flow impeller to form a gentle mixed air flow. Indoor unit air outlet. 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.

When the indoor air is introduced into the air outlet through the air inlet opened on the side panel of the indoor unit casing, and the heat exchange air in the air outlet duct of the cross flow impeller is mixed to form a gentle mixed air flowing out of the indoor air outlet, the cross flow impeller The energy of the heat exchange wind flowing out is constant. After the mixed wind is formed, the total air volume increases, so the wind speed of the wind is inevitably low, and the range of the wind is also reduced. At this time, on the side of the indoor unit casing. The air inlet fan is arranged on the air outlet of the board. First, the air volume of the air is increased, so that the temperature of the formed mixed air is further improved. Second, the introduced indoor air itself has a certain wind energy, and the wind speed is solved. The problem is that the range of the wind is reduced, and when the speed of the induced draft fan is such that the flow rate of the introduced wind reaches and exceeds the flow rate of the heat exchanged wind in the outlet duct, the indoor unit obtains the increased wind output and the wind speed and The range of the wind will be equivalent to the simple heat exchange of the original indoor unit. When an air-inducing fan is disposed on the air outlet of the side panel of the indoor unit casing, an air guiding duct may be disposed on the air-inducing fan, and the air guiding duct extends and covers an air guiding opening formed on the wall of the wind-flow duct of the cross-flow impeller. The air duct opens a tuyere to the side of the air inlet, so that the wind energy is induced, and the air volume is introduced into the air duct of the indoor unit with little attenuation, and the air intake effect is better. Generally, the pipe holes for installing and connecting the connecting pipe are installed on both sides of the air conditioner indoor casing, and only one pipe hole is required after the installation, and the other pipe hole can be used as the air port on the side plate of the indoor casing. Set the draft fan on it.

When an air outlet is opened on the side panel of the indoor unit casing and the side wall of the cross-flow impeller air outlet, and an air inlet fan is disposed on the air outlet of the indoor unit casing side plate or the cross-flow impeller air outlet side plate, At this time, it is not necessary to open an air inlet on the wall of the cross-flow impeller air outlet, and the indoor air is directly introduced into the cross-flow impeller air duct through the air inlet fan on the air outlet to mix with the heat exchange air to form a soft mixed air flow. Out of the room At the tuyere, the amount of mixed wind and air is also obtained to obtain a sufficiently large increase in the case where the wind speed and the wind range are substantially constant, so as to achieve the desired mixed wind. When an air intake fan is disposed on the air outlet of the indoor unit casing side plate or the cross flow impeller air outlet side plate, an air intake fan is disposed on the air outlet of the cross flow impeller air outlet side plate. The effect is optimal.

In the implementation of the present invention, the left and right side panels of the indoor unit casing and the left and right side panels of the cross-flow impeller air outlet duct may be separately opened at the same time or on one side, and correspondingly, the left and right side panels or An air intake fan is disposed on the air outlet of the one side panel.

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.

The air inlet is opened inward on the wind tunnel wall of the cross-flow impeller, and the relative position and structure relationship between the upper and lower points of the air inlet is specially designed, so that the air inlet itself becomes a guide with the air guiding function. At the tuyere, 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.

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 air-inducing effect of the air-inducing component existing in the D patent is poor.

3. The invention overcomes the technical bias that the air supply device cannot be installed in the airflow duct of the airflow indoor unit.

4. The mixed air of the indoor unit of the present invention has an outlet wind speed and an air flow range which are substantially unchanged compared with the original indoor unit air outlet, but the air volume is significantly increased.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a right side elevational view showing the structure of an indoor unit in which an air outlet is opened in an air duct wall of the present invention.

2 is a schematic view showing the three-dimensional structure of the air inlet opening of the air outlet duct wall 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.

Figure 4 is a schematic view showing the structure of an indoor unit for opening a tuyere on the side plate of the cross-flow impeller air outlet duct of the present invention.

detailed description

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

Figure 1, Figure 2, Figure 3, Figure 1 of Figure 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 indoor Machine mounting plate, 7 is a cross-flow impeller, 8 is a cross-flow impeller volute, 9 is a cross-flow impeller axis, 10 is the original wind tunnel wall trajectory, 11 is the upper end of the air inlet, 12 is the air inlet, 130 is the tangential line of the outlet duct wall with the above tangent point as the tangent point, and 131 is the line connecting the line from the upper tangent point to the lower tangent point and the upper tangent point as the tangent point of the tangential section of the outlet duct wall. Clockwise angle, 13 is the lower point of the air inlet, 14 is the side panel air outlet of the indoor unit casing, 141 is the cross-flow impeller air duct side panel air outlet, 15 and 151 are the draft fan, and 16 is the cross-flow impeller. The air duct wall, 161 is the cross-flow impeller air outlet direction, 17 is the cross-flow impeller air outlet duct, 18 is the indoor unit air outlet, 19 is the connecting support bar, 20 is the cross-flow impeller volute tongue, and A is the upper cutting point. B is the next tangent point.

1 in FIG. 1 is an indoor unit casing, and the cross-flow impeller air outlet duct 17 is an indoor unit air outlet duct, and the cross-flow impeller air outlet duct wall 16 is an indoor unit outlet duct wall. A heat exchanger 5, a cross flow impeller 7, a cross flow impeller volute 8 and a cross flow impeller air outlet duct 17 are arranged in the indoor unit casing 1. When the indoor unit is in operation, the cross flow impeller 7 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 7 in the cross flow impeller air outlet duct 17 and flows through the upper cut point 11 of the air inlet. A negative pressure region is formed between the upper cutting point 11 of the air guiding port 12 and the lower cutting point 13 of the air guiding port, and the indoor air passes through the indoor machine casing side panel air outlet 14 and is sucked into the air guiding port 12 and the cross flow impeller air outlet duct 17 The heat exchange air mixes to form a gentle mixed air that flows into the room from the indoor unit air outlet 18. Under the action of the air-exhausting fan 15, when the indoor air passes through the air outlet 14 of the indoor unit casing side, not only the air volume introduced is increased, but also the air volume is introduced, and the wind energy is also introduced, and the indoor airflow duct 17 is introduced into the indoor air duct. The air has a sufficient air volume, and the wind energy mixed with the heat exchange air in the cross flow impeller air outlet duct 17 forms a gentle mixed wind, and the wind energy does not fall. The line connecting the upper cutting point A to the lower cutting point B is the connecting line from the upper cutting point to the lower cutting point, and has the same connection property as the upper cutting point 11 of the air guiding opening 12 and the lower cutting point 13 of the air guiding opening. The cross-flow impeller volute 8 of Fig. 1 and the indoor unit mounting plate 6 are coincidently drawn for the reason of the drawing, and actually there are gaps, FIG. 1, FIG. 2, FIG. 3 and FIG. The direction of the arrow is the direction of air flow. A plurality of support bars 19 between the air inlets 12 formed by the upper and lower cutting points may be provided to improve the strength and vibration resistance of the air inlet 12. The original wind tunnel wall trajectory 10 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 12 is indicated by a broken line, and the upper tangent point A is the tangent point of the tangential line of the outlet duct wall with the above tangent point as the tangent point. The line connecting the upper cut point A to the lower cut point B is the line connecting the upper cut point to the lower cut point.

4 is a schematic structural view of an indoor unit for opening a tuyere on a side plate of a cross-flow impeller air outlet duct according to the present invention, which directly passes indoor air through an indoor unit casing side panel tuyere to a cross-flow impeller air outlet duct side panel tuyere 141; Entering into the cross-flow impeller air outlet duct 17, mixing with the heat exchange air to form a soft mixed air flowing from the indoor unit air outlet 18 to the indoor, and the indoor unit casing side panel air outlet in the illustrated figure and the cross-flow impeller The side panel tuyers 141 are overlapped and are not separately labeled. Similarly, under the action of the air-inducing fan 151, the indoor air volume in the cross-flow impeller air outlet duct 17 is sufficient, and the heat exchange air in the cross-flow impeller air outlet duct 17 is mixed to form a soft mixed wind energy. There will be no downside problems.

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 (3)

The utility model relates to an air conditioner mixing air outlet indoor machine, which comprises an indoor machine casing, 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, The air inlet is perpendicular to the axial center of the indoor machine, the projection line in the projection plane of the indoor unit air outlet is located on the lower left side, and the point intersecting the outlet air duct wall is the tangent line of the outlet duct wall of the upper cut point The clockwise angle of the direction segment is greater than or equal to 10° to less than or equal to 200°, and the air outlet is opened on the side panel of the indoor unit casing, and the air inlet fan is disposed on the air outlet of the side panel of the indoor unit casing. The utility model relates to an air-conditioner mixed air outlet indoor machine, which comprises an indoor unit casing, a cross-flow impeller air outlet duct, and a cross-flow impeller air outlet duct side plate, characterized in that: the indoor machine casing side plate and the cross-flow impeller air outlet A tuyere is opened on the side panel of the air duct, and an air inlet fan is arranged on the tuyere opened by the side panel of the indoor unit casing or the tuyere of the cross-flow impeller outlet duct side panel. The air-conditioning mixing and exhausting indoor unit according to claim 1 or 2, wherein the air-inducing fan provided on the tuyere is an axial fan or a centrifugal fan.

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