Heat pump air conditioner indoor unit with double air deflectors and control method of heat pump air conditioner indoor unit

Abstract

The invention discloses a heat pump air conditioner indoor unit with double air deflectors and a control method thereof.The heat pump air conditioner indoor unit is provided with a front panel, a bottom plate, cross-flow fan blades, a heater, an evaporator, a first air deflector and a second air deflector, airflow output by the cross-flow fan blades extends from a guide plate of the first air deflector to form upward airflow, and the upward airflow enters the air; the upward airflow can reach a farther air supply height on the basis of the outward turning angle, so that the longitudinal air supply distance can be increased, and the air supply range is enlarged; secondly, the upward airflow avoids direct blowing to the human body, the air supply comfort is improved, doping with surrounding airflow is reduced, large energy fluctuation is avoided, and the air supply effect is enhanced; in addition, the airflow is exhausted outwards along the first air guide plate and the second air guide plate, and the uniformity of the air outlet airflow is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration, and in particular to a heat pump air-conditioning indoor unit with double air guide plates and a control method thereof. Background Art

[0002] With the continuous improvement of science and technology, more and more people pay more attention to the quality of life. For daily necessities such as heat pump air conditioners, people have put forward higher requirements for its appearance and quality. As important indicators of customer experience during the operation of heat pump air conditioners, air supply distance and comfort are becoming more and more popular. Research has found that the angle of the double air guide plate has a great influence on the size of the air supply distance and air supply comfort of the indoor unit of the heat pump air conditioner. The front air guide plate of the existing double air guide plate heat pump air conditioner is mainly turned inward, that is, the front air guide plate rotates counterclockwise with the vertical plane as the reference. The double air guide plates of the heat pump air conditioner with the above flipping method are mostly downward during operation, and the air supply effect is not ideal because the air cannot be sent to farther places. When the wind speed is high or the speed of the cross-flow fan fluctuates, the airflow generally blows directly on the human body, which can easily cause a large local temperature difference in the human body, thereby causing physical discomfort and poor air supply comfort. The announcement number is CN106524463B, which discloses an air guide plate and an air conditioner indoor unit, wherein the air guide plate includes: an air guide body, the air guide body has a windward side and a leeward side, the windward side is arranged toward the air outlet of the air conditioner indoor unit; a rotating bracket, the rotating bracket is arranged on the windward side of the air guide body; and a sealing rib, the sealing rib is arranged on the windward side close to the rotating axis of the rotating bracket. In the present invention, when the air guide plate rotates to guide the air, the sealing rib blocks the gap between the air guide plate and the face frame, so that the airflow after heat exchange in the air duct cannot flow through the gap between the air guide plate and the face frame, thereby avoiding the phenomenon of condensation due to the large temperature difference between the windward side and the leeward side of the air guide body. However, the air guide plate cannot change the airflow blowing directly on the human body. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a heat pump air-conditioning indoor unit with double air guide plates having strong air supply effect and high comfort and a control method thereof.

[0004] To achieve the above-mentioned purpose, the solution provided by the present invention is: a heat pump air-conditioning indoor unit with double air guide plates, comprising a front panel, a bottom plate, a cross-flow fan blade, a heater, an evaporator, a first air guide plate, and a second air guide plate. A distance is left between the front panel and the bottom plate to form an air outlet, and the first air guide plate and the second air guide plate are arranged at the air outlet. The evaporator, heater, and cross-flow fan blade are arranged in sequence from top to bottom, and the cross-flow fan blade is used to blow cold air or hot air to the air outlet.

[0005] The beneficial effects of the present invention are: enhancing the air supply effect and improving the overall comfort. The present invention arranges a front panel, a bottom plate, a crossflow fan blade, a heater, an evaporator, a first air guide plate, and a second air guide plate. The airflow output by the crossflow fan blade is extended from the first air guide plate to form an upward airflow into the air. The upward airflow can reach a farther air supply height based on the outward turning angle, thereby increasing the longitudinal distance of the air supply and thus increasing the air supply range. Secondly, the upward airflow avoids direct blowing on the human body, thereby improving the comfort of the air supply and reducing the mixing with the surrounding airflow, thereby avoiding large energy fluctuations and enhancing the air supply effect. In addition, the airflow is discharged outward along the first air guide plate and the second air guide plate, thereby ensuring the uniformity of the outlet airflow.

[0006] Furthermore, it also includes a driving assembly, and the driving assembly drives the first air guide plate and the second air guide plate to rotate respectively. After the present invention adopts the above structure, it can realize driving the first air guide plate and the second air guide plate to rotate respectively.

[0007] Furthermore, the evaporator has an inverted V-shaped structure.

[0008] Furthermore, the evaporator includes a first evaporation part and a second evaporation part, the first evaporation part and the second evaporation part are respectively arranged obliquely to form an inverted V-shaped structure, and the heater is located between the first evaporation part and the second evaporation part.

[0009] Furthermore, it also includes a rear cover plate, the front panel and the rear cover plate are arranged front and back, the front panel and the bottom plate are arranged up and down, the front panel, the rear cover plate and the bottom plate together form a wind making chamber, and the wind making chamber is provided with a cross-flow fan blade, a heater, an evaporator, a first air guide plate, a second air guide plate, and a driving component.

[0010] Furthermore, the front panel is arranged vertically, and the bottom panel is arranged horizontally.

[0011] The present invention also includes a control method for a heat pump air conditioner indoor unit with double air guide plates: Cooling mode: Set the angle of the first air guide plate to 30°-60°, set the angle of the second air guide plate to 15°-32°, then start the drive assembly to drive the first air guide plate to rotate clockwise based on the vertical plane, and drive the second air guide plate to rotate clockwise based on the horizontal plane, so that the first air guide plate and the second air guide plate are opened from the inside to the outside respectively, and then control the crossflow fan blades to run at high speed, blow high-speed cold air, and discharge it outward through the first air guide plate; Heating mode: Set the angle of the first air guide plate to 0°-30°, set the angle of the second air guide plate to 70°-90°, then start the drive assembly to drive the first air guide plate to rotate clockwise based on the vertical plane, and drive the second air guide plate to rotate clockwise based on the horizontal plane, so that the first air guide plate and the second air guide plate are opened from the inside to the outside, and then control the crossflow fan blades to run at high speed, blow high-speed hot air, and guide the downward pressure air through the second air guide plate; Light breeze mode: start the drive component, control the first air guide plate to flip outward to 30°, control the second air guide plate to flip outward to 15°, form upward air supply, and then control the crossflow fan blade to run at a low speed to blow low-speed wind, and guide the air upward through the first air guide plate and the second air guide plate. The present invention sets three modes. During cooling, the first air guide plate flips outward to provide an initial upward angle for the airflow, so that the airflow can be sent to a farther position in the longitudinal direction to avoid direct blowing on the human body, and to a certain extent reduce the discomfort of direct blowing; during heating, the first air guide plate and the second air guide plate cooperate to press the wind downward and transport hot air along the floor. The hot air can perform hot and cold convection with the upper cold air to achieve a good heating effect; in the light style mode, the airflow is guided by the extension of the air guide plate, and the air outlet is more uniform, so that the airflow is better distributed evenly with the air in the air, thereby achieving the effect of light breeze.

[0012] Furthermore, the rotation angle of the first air guide plate is 0°-116°.

[0013] Furthermore, the rotation angle of the second air guide plate is 0°-90°. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of all the everting angles of the first air guide plate and the second air guide plate of the present invention.

[0015] Figure 2 It is a schematic diagram of all inward turning angles of the first air guide plate and the second air guide plate of the present invention.

[0016] Figure 3 It is a schematic diagram of the rotation angle of the first air guide plate and the second air guide plate during cooling of the present invention.

[0017] Figure 4 This is a schematic diagram of the rotation angles of the first air guide plate and the second air guide plate during heating of the present invention.

[0018] Figure 5 Schematic diagram of the angles of the first air guide plate and the second air guide plate in the light wind feeling mode of the present invention.

[0019] Figure 6 It is a stereogram of the present invention.

[0020] Figure 7 The figure is a schematic diagram of the air supply range of the inward-turned air guide plate of the existing air-conditioning indoor unit.

[0021] Figure 8 It is a schematic diagram of the cooling and air supply range of the indoor unit of the air conditioner of the present invention.

[0022] Fig. 9 It is a schematic diagram of the heating and air supply range of the indoor air conditioner of the present invention.

[0023] Fig.10 This is a data difference diagram of the air supply range in the cooling state when the first air guide plate of the present invention is turned inward.

[0024] Fig.11 This is a data difference diagram of the air supply range in the cooling state when the first air guide plate of the present invention is turned outward.

[0025] Fig.12 It is a line graph of wind speed of the inward and outward vents of the first air guide plate of the present invention.

[0026] Fig.13 This is a line graph of the air supply range data during heating according to the present invention.

[0027] Among them, 11 is the front panel, 12 is the bottom plate, 13 is the air outlet, 14 is the rear cover plate, 15 is the wind control chamber, 2 is the cross-flow fan blade, 3 is the heater, 4 is the evaporator, 41 is the first evaporation part, 42 is the second evaporation part, 5 is the first air guide plate, and 6 is the second air guide plate. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] See attached Figure 1 To Attachment Fig.13As shown, a heat pump air conditioner indoor unit with double air guide plates includes a front panel 11, a bottom plate 12, a rear cover plate 14, a crossflow fan blade 2, a heater 3, an evaporator 4, a first air guide plate 5, a second air guide plate 6, and a driving component. A distance is left between the front panel 11 and the bottom plate 12 to form an air outlet 13. The first air guide plate 5 and the second air guide plate 6 are arranged at the air outlet 13. The evaporator 4, the heater 3, and the crossflow fan blade 2 are arranged in sequence from top to bottom. The crossflow fan blade 2 is used to blow cold air or hot air to the air outlet 13; the driving component drives the first air guide plate 5 and the second air guide plate 6 to rotate respectively.

[0031] In this embodiment, the evaporator 4 has an inverted V-shaped structure. Specifically, the evaporator 4 includes a first evaporation section 41 and a second evaporation section 42. The first evaporation section 41 and the second evaporation section 42 are respectively inclined to form an inverted V-shaped structure. The heater 3 is located between the first evaporation section 41 and the second evaporation section 42.

[0032] In this embodiment, the front panel 11 and the rear cover plate 14 are arranged front and back, and the front panel 11 and the bottom plate 12 are arranged up and down. The front panel 11, the rear cover plate 14, and the bottom plate 12 together form a wind chamber 15. The wind chamber 15 is provided with a cross-flow fan blade 2, a heater 3, an evaporator 4, a first air guide plate 5, a second air guide plate 6, and a driving component.

[0033] This embodiment also includes a control method for a heat pump air conditioner indoor unit with double air guide plates: Cooling mode: set the angle of the first air guide plate 5 to 30°-60°, set the angle of the second air guide plate 6 to 15°-32°, and then start the driving component to drive the first air guide plate 5 to rotate clockwise with the vertical plane as the reference, and drive the second air guide plate 6 to rotate clockwise with the horizontal plane as the reference, so that the first air guide plate 5 and the second air guide plate 6 are respectively opened from the inside to the outside, and then control the cross-flow fan blade 2 to run at a high speed to blow high-speed cold air, which is discharged outward through the first air guide plate 5, specifically, discharged obliquely upward.

[0034] When the first air guide plate 5 is at an angle of 30°-60°, the airflow is discharged outward along the first air guide plate 5, and when the second air guide plate 6 is at an angle of 15°-32°, the airflow is discharged outward along the second air guide plate 6, thereby ensuring the uniformity of the outlet airflow, avoiding the circulation of gas in the air making chamber 15, and also avoiding the backflow of gas. On the other hand, when the cold air flow blows upward, due to the high density of the cold air, it will exchange with the hot air flow under the room to form a cold and hot cycle, thereby achieving a better cooling effect, while avoiding direct blowing on the human body, thereby improving the air supply comfort to a certain extent.

[0035] The working principle is as follows: when the wind speed at the air outlet is assumed to be V, the first air guide plate 5 is turned outward to form an angle θ with the front panel 11, which provides an upward angle for the airflow. Under the action of this initial angle θ, the airflow can be decomposed into lateral V x , longitudinal V y Wind speed in two directions, V y Because of gravity and the law of conservation of energy, it will gradually decrease until it reaches 0, at which time the longitudinal air supply reaches a highest critical point; the longitudinal air supply distance is farther than the inward turn of the first air guide plate 5, increasing the air supply range, thereby realizing long-distance air supply; at the same time, the air is supplied upward to avoid direct blowing on the human body, while ensuring the cooling effect, the air supply comfort is greatly improved.

[0036] Heating mode: set the angle of the first air guide plate 5 to 0°-30°, set the angle of the second air guide plate 6 to 70°-90°, and then start the driving component to drive the first air guide plate 5 to rotate clockwise with the vertical plane as the reference, and drive the second air guide plate 6 to rotate clockwise with the horizontal plane as the reference, so that the first air guide plate 5 and the second air guide plate 6 are in a state of opening from the inside to the outside, and then control the cross-flow fan blade 2 to run at a high speed, blow high-speed hot air, and guide the downward pressure air through the second air guide plate 6 to quickly heat up.

[0037] The air conditioner indoor unit of this embodiment transmits hot air along the floor, and the density of the high-temperature airflow is relatively small, so it will be squeezed upward by the cold air, avoiding direct blowing on the human body and being squeezed upward by the cold air to achieve a better heating effect, and the temperature of the area can be increased in a short time.

[0038] The working principle is as follows: an angle θ is formed between the first air guide plate 5 and the second air guide plate 6. When θ is smaller, the air supply range is smaller, the hot air flow blown out by the air-conditioning indoor unit is more concentrated, and the heating efficiency is higher; when θ is larger, the air supply range is larger, the air flow blown out by the air-conditioning indoor unit is more dispersed, and the heating efficiency is lower; the air flow with high temperature has low density and will be squeezed upward by the cold air. Therefore, when θ is smaller and the air supply area is in front of the person's position, the heating effect is good and the comfort is better.

[0039] Light breeze mode: After the indoor temperature reaches the set temperature, turn on the light breeze mode, start the drive component, control the first air guide plate 5 to flip outward to 30°, control the second air guide plate 6 to flip outward to 15°, so as to form upward air supply, and then control the cross flow fan blade 2 to operate at a low speed to blow low-speed wind, which is guided upward by the first air guide plate 5 and the second air guide plate 6. With the perforated structure design of the second air guide plate 6, the air output is more uniform, and at this time the fan turns to low-speed operation, which drives the cross flow fan blade 2 to operate at a low speed, and the air output speed is reduced.

[0040] The working principle is as follows: the first air guide plate 5 is turned outward to give the airflow an upward angle of 30°. Under the action of this initial angle, assuming that the wind speed at the air outlet is v=5m / s, the calculation is as follows: v 纵 =vcos30°=4.33m / s, t=v 纵 / g=0.44s,h=v 纵 t-0.5gt 2 ≈0.95m. From the above calculation, it can be known that the first air guide plate 5 can be turned outward by 30° to send the airflow to a position 0.95m farther than the initial installation height. The general initial installation height is 1.8m-2.3m. Therefore, the lateral area where people stand will not be directly blown by the airflow. After the set temperature is reached, the motor of the air-conditioning indoor unit reduces the speed, so that the cross-flow fan blades 2 reduce the speed, and the airflow is evenly distributed in the room, thereby opening the effect of a light breeze.

[0041] In this embodiment, the rotation angle of the first air guide plate 5 is 0°-116°; the rotation angle of the second air guide plate 6 is 0°-90°, wherein the rotation angle of the first air guide plate 5 and the rotation angle of the second air guide plate 6 are both automatically driven to rotate when the indoor air conditioner is turned on in the three automatic modes of cooling, heating, and light breeze.

[0042] In the manual state, the rotation angle of the first air guide plate 5 and the inward and outward turning of the second air guide plate 6 are manually controlled, and the rotation angle is larger than that in the three automatic modes.

[0043] See attached Fig.10 As shown, at the high wind speed of cooling, the crossflow fan blade 2 rotates at high speed, the hanging height of the air conditioner indoor unit is 2.3m, the first air guide plate 5 is turned inward, the first air guide plate 5 rotates 17° counterclockwise and the second air guide plate 6 rotates 126° clockwise. The air supply distance data, the maximum wind speed occurs at 0.5m away and 1.5m high, and the difference map is obtained after the air supply data is normalized.

[0044] See attached Fig.11 As shown in the figure, the air supply data of the air conditioner indoor unit is suspended at a height of 2.3m, the first air guide plate 5 is turned outward at an angle of 52°, and the second air guide plate 6 is turned outward at an angle of 15°. The maximum wind speed occurs at a height of 2m at a distance of 1.5m. Since the first air guide plate 5 is upwardly lifted, the airflow passes over the area where the human body moves. At this time, there is no wind at a height of 0.2m within a distance of 0.5m-2m. The air supply data is normalized to obtain a difference map, from which Fig.10 and Fig.11 It can be seen that the air supply distance is longer when the first air guide plate 5 is turned outward.

[0045] Participate in the Fig.12As described, the wind speed test of the air outlet when the first air guide plate 5 is turned outward and inward is adopted. The wind speed of the air outlet when the first air guide plate 5 is turned outward is more uniform than the wind outlet when the first air guide plate 5 is turned inward, which avoids the circulation of gas in the air chamber 15 and can also avoid gas backflow.

[0046] Fig.13 The line graph of the air supply range data of the control angle when the indoor unit of the air conditioner in this embodiment is heated. It can be seen from the figure that the air supply range corresponding to the data is Figure 8 The air supply range is roughly similar.

[0047] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any technician familiar with the art can use the above disclosed technical content to make more possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent and equivalent changes made according to the ideas of the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat pump air conditioner indoor unit with double air guide plates, comprising a front panel (11), a bottom plate (12), a crossflow fan blade (2), a heater (3), an evaporator (4), a first air guide plate (5), and a second air guide plate (6), characterized in that: An air outlet (13) is formed by leaving a distance between the front panel (11) and the bottom panel (12); the first air guide plate (5) and the second air guide plate (6) are arranged at the air outlet (13); the evaporator (4), the heater (3), and the cross-flow fan blades (2) are arranged in sequence from top to bottom; and the cross-flow fan blades (2) are used to blow cold air or hot air toward the air outlet (13).

2. A heat pump air conditioner indoor unit with double air guide plates according to claim 1, characterized in that: The evaporator (4) has an inverted V-shaped structure.

3. A heat pump air conditioner indoor unit with double air guide plates according to claim 2, characterized in that: The evaporator (4) comprises a first evaporation portion (41) and a second evaporation portion (42); the first evaporation portion (41) and the second evaporation portion (42) are respectively arranged at an angle to form an inverted V-shaped structure; the heater (3) is located between the first evaporation portion (41) and the second evaporation portion (42).

4. A heat pump air conditioner indoor unit with double air guide plates according to claim 1, characterized in that: It also comprises a driving assembly, wherein the driving assembly drives the first air guide plate (5) and the second air guide plate (6) to rotate respectively.

5. A heat pump air conditioner indoor unit with double air guide plates according to claim 4, characterized in that: The invention also comprises a rear cover plate (14), wherein the front panel (11) and the rear cover plate (14) are arranged front to back, and the front panel (11) and the bottom plate (12) are arranged up and down, and the front panel (11), the rear cover plate (14) and the bottom plate (12) together form a wind control chamber (15), and the wind control chamber (15) is provided with a cross-flow fan blade (2), a heater (3), an evaporator (4), a first wind guide plate (5), a second wind guide plate (6), and a drive component.

6. A control method for a heat pump air conditioner indoor unit with double air guide plates as claimed in any one of claims 1 to 5, characterized in that: Cooling mode: setting the angle of the first air guide plate (5) to 30°-60°, setting the angle of the second air guide plate (6) to 15°-32°, then starting the driving component to drive the first air guide plate (5) to rotate clockwise with the vertical plane as the reference, and drive the second air guide plate (6) to rotate clockwise with the horizontal plane as the reference, so that the first air guide plate (5) and the second air guide plate (6) are respectively in a state of opening from the inside to the outside, and then controlling the cross-flow fan blade (2) to run at a high speed to blow high-speed cold air, which is discharged outward through the first air guide plate (5); Heating mode: the angle of the first air guide plate (5) is set to 0°-30°, the angle of the second air guide plate (6) is set to 70°-90°, and then the driving component is started to drive the first air guide plate (5) to rotate clockwise with the vertical plane as the reference, and drive the second air guide plate (6) to rotate clockwise with the horizontal plane as the reference, so that the first air guide plate (5) and the second air guide plate (6) are in a state of opening from the inside to the outside, and then the crossflow fan blade (2) is controlled to run at a high speed to blow high-speed hot air, and the second air guide plate (6) guides the downward pressure air; Light wind feeling mode: start the drive component, control the first air guide plate (5) to flip outward to 30 degrees, control the second air guide plate (6) to flip outward to 15 degrees, so as to form an upward air supply, and then control the cross-flow fan blade (2) to operate at a low speed to blow low-speed wind, which is guided upward by the first air guide plate (5) and the second air guide plate (6).

7. The control method of a heat pump air conditioner indoor unit with double air guide plates according to claim 6, characterized in that: The rotation angle of the first air guide plate (5) is 0°-116°.

8. The control method of a heat pump air conditioner indoor unit with double air guide plates according to claim 6, characterized in that: The rotation angle of the second air guide plate (6) is 0°-90°.

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