Air duct systems and mobile air conditioners
Patent Information
- Application Number
- JP2026600051U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Priority Date
- 2023-10-16
- Filing Date
- 2024-10-12
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2034-10-12
AI Technical Summary
【0014】 本考案の第2態様では、前記エアダクトシステムを含む移動式エアコンが開示されている。このエアダクトシステムは、エアコンの吸気面積及び吸気容量を増加させ、その結果、エアコンの冷却効果及びユーザーエクスペリエンスを向上させる。
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Abstract
Description
[Technical Field]
[0001] The present invention relates to the technical field of air conditioners, and more specifically, to an air duct system and a mobile air conditioner. [Background Art]
[0002] Currently, commercially available mobile air conditioners generally use a dual-shaft motor to respectively drive two centrifugal impellers to achieve air intake and exhaust on the evaporator side and the condenser side. However, since there is no air intake surface at the air duct position near the motor side of the centrifugal impeller, the centrifugal impeller can only suck air in one direction. When a larger air volume is required for an air conditioner, it is often necessary to increase the rotational speed of the motor, which increases noise and power consumption, resulting in a waste of resources. For example, the ventilation device and mobile air conditioner disclosed in Patent Publication No. CN216844922U include a housing, wherein a front air inlet and a front air outlet are provided on the front side of the housing, the front air outlet is located above the front air inlet, a front circulation air duct is formed between the front air inlet and the front air outlet, a rear air inlet and a rear air outlet are provided on the rear side of the housing, the rear air outlet is located below the rear air inlet, a housing in which a rear circulation air duct is formed between the rear air inlet and the rear air outlet, a dual-shaft motor disposed in the housing, a front impeller disposed on one output shaft of the dual-shaft motor and located in the front circulation air duct, and a rear impeller disposed on the other output shaft of the dual-shaft motor and located in the rear circulation air duct. In this prior art, the front impeller and the rear impeller respectively suck air from only one side in their respective circulation air ducts, and cannot utilize the air intake space on the side close to the motor.
[0003] Therefore, the applicant improves the prior art. [Summary of the Invention] [Problem to be Solved by the Invention]
[0004] Therefore, this invention provides an air duct system and a portable air conditioner that can double the intake volume of the air duct and increase the exhaust volume without changing the basic configuration. [Means for solving the problem]
[0005] To achieve the above objective, in the first aspect of this invention, A first cavity having a first air duct formed inside, the first cavity comprising a first intake port communicating with the first cavity and a first exhaust port communicating with the first cavity via the first air duct. A first bidirectional intake impeller is assembled within the first air duct, drawing in air bidirectionally in the axial direction and exhausting air radially, A condenser attached to the fluid path of the first cavity, A second cavity having a second air duct formed inside, the second cavity comprising a second intake port communicating with the second cavity and a second exhaust port communicating with the second cavity via the second air duct, A second bidirectional intake impeller is assembled within the second air duct, drawing in air bidirectionally in the axial direction and exhausting air radially, An evaporator attached to the fluid path of the second cavity, An air duct system is disclosed which includes a two-axis motor mounted between a first cavity and a second cavity, with its first power shaft connected to a first bidirectional intake impeller and its second power shaft connected to a second bidirectional intake impeller.
[0006] In this invention, during use, the first bidirectional intake impeller operates, drawing in external airflow from the first intake port into the first cavity. The airflow flows into the first air duct from both sides and is finally driven by the first bidirectional intake impeller to be discharged from the first exhaust port. During this flow, the condenser cools the airflow, generating and blowing out cold air. Meanwhile, the second bidirectional intake impeller operates, drawing in external airflow from the second intake port into the second cavity. The airflow flows into the second air duct from both sides and is finally driven by the second bidirectional intake impeller to be discharged from the second exhaust port. During this flow, the evaporator heats the airflow, generating and blowing out warm air. During this process, both the first bidirectional intake impeller and the second bidirectional intake impeller draw in air from both sides, so the rotation speed of the two-axis motor remains constant. Compared to conventional unidirectional intake impellers, the first and second bidirectional intake impellers of this invention draw in air from both sides, resulting in increased exhaust volume, improved resource utilization, and enhanced product performance.
[0007] As a preferred solution of this invention, the first cavity is positioned above the second cavity, and the first cavity and the second cavity are separated by an inclined partition plate. A two-axis motor is attached to the partition plate, and the first and second power shafts of the two-axis motor extend into the first and second air ducts, respectively, and are connected to the first and second bidirectional intake impellers. By separating the first cavity and the second cavity with an inclined partition plate, this invention prevents lateral flow of hot and cold air inside and avoids affecting the operating effect. Furthermore, because the partition plate is positioned at an angle, the height of the first air intake in the first cavity and the height of the second air intake in the second cavity can be maximized, thereby enhancing the intake effect.
[0008] As a preferred solution of the present invention, the first air duct is provided with first air duct intake ports corresponding to the upper and lower surfaces of the first bidirectional intake impeller, is connected to the first cavity via the first air duct intake ports, and the exhaust end of the first air duct is connected to the first exhaust port. The second air duct has second air duct intake ports corresponding to the upper and lower surfaces of the second bidirectional intake impeller, is connected to the second cavity via the second air duct intake ports, and the exhaust end of the second air duct is connected to the second exhaust port. In this invention, the upper and lower surfaces of the first air duct are provided with first air duct intake ports, which correspond to the first bidirectional intake impeller, enabling bidirectional intake by the first bidirectional intake impeller. Similarly, the upper and lower surfaces of the second air duct are provided with second air duct intake ports, which correspond to the second bidirectional intake impeller, thereby enabling bidirectional intake by the second bidirectional intake impeller. With the rotational speed of the two-axis motor remaining constant, the intake volume is increased and performance is improved compared to the conventional unidirectional intake impeller structure.
[0009] A preferred solution of the present invention further includes a housing in which the first cavity and the second cavity are formed, and the first intake port, the first exhaust port, the second intake port and the second exhaust port are provided on the side surface of the housing, wherein the housing is the outer shell of the air duct system, the first cavity and the second cavity are located inside the housing and surrounded by the housing and plates such as partition plates located inside the housing.
[0010] A preferred solution in this invention is that the intake and exhaust directions of the first cavity are at an angle, while the intake and exhaust directions of the second cavity are in the same direction. The exhaust and intake directions of the first cavity are at an angle, and at the same time, the intake and exhaust directions of the second cavity are also at an angle, thereby effectively avoiding lateral airflow and preventing any impact on the effect of blowing out cool air.
[0011] A preferred solution of the present invention is that a space is provided between the first air duct and the inner bottom wall and inner top wall of the first cavity, and a space is provided between the second air duct and the inner bottom wall and inner top wall of the second cavity, and the two-axis motor has a motor body, and a first distance is formed between the motor body and the first air duct, and between the motor body and the second air duct. With this structure of the present invention, the first bidirectional intake impeller and the second bidirectional intake impeller can effectively draw in air from both sides.
[0012] In a preferred solution of the present invention, the height of the first air intake port is higher than the height of the first air duct, and the airflow flows in from the first air intake port and directly to the first air duct air intake ports located on the upper and lower surfaces of the first air duct, and the height of the second air intake port is higher than the height of the second air duct, and the airflow flows in from the second air intake port and directly to the second air duct air intake ports located on the upper and lower surfaces of the second air duct. This structure is advantageous for facilitating bidirectional air intake by the first bidirectional intake impeller and the second bidirectional intake impeller during air intake.
[0013] A preferred solution of this invention is that the condenser is attached to the first air intake and cools the airflow to generate and blow out cold air. The evaporator is attached to the second air intake and heats the airflow to generate and blow out warm air.
[0014] A second aspect of the present invention discloses a portable air conditioner including the air duct system. This air duct system increases the intake area and intake volume of the air conditioner, thereby improving the cooling effect and user experience of the air conditioner.
[0015] Other beneficial technical effects of this invention are embodied in specific embodiments. [Brief explanation of the drawing]
[0016] In order to more clearly explain the technical solutions of the embodiments of the present invention or the prior art, the drawings that need to be used for describing the embodiments or the prior art are briefly introduced below. Obviously, the drawings in the following description are merely embodiments of the present invention, and those skilled in the art can obtain other drawings based on the provided drawings without creative efforts.
[0017] [Figure 1] It is a schematic diagram of the air duct system in the present invention. [Figure 2] It is a schematic cross-sectional view of the air duct system in the present invention. [Mode for Carrying Out the Invention]
[0018] Hereinafter, the present invention will be described in further detail with reference to the accompanying drawings. These accompanying drawings are simplified schematic diagrams that only schematically show the basic structure of the present invention, and therefore, only show components related to the present invention.
[0019] As shown in Figures 1 to 2, the air duct system comprises: a first cavity (100) with a first air duct (110) formed therein, wherein the first cavity (100) includes a first air inlet (101) communicating with the first cavity (100) and a first air outlet (102) communicating with the first cavity (100) via the first air duct (110); a first bidirectional air intake impeller (300) assembled in the first air duct (110), which takes in air bidirectionally in the axial direction and exhausts air in the radial direction; a condenser (500) installed in the fluid path of the first cavity (100); a second cavity (200) with a second air duct (210) formed therein, wherein the second cavity (200) includes a second air inlet (201) communicating with the second cavity (200) and a second air outlet (202) communicating with the second cavity (200) via the second air duct (210); a second bidirectional air intake impeller (400) assembled in the second air duct (210), which takes in air bidirectionally in the axial direction and exhausts air in the radial direction; an evaporator 600 mounted in the fluid path of the second cavity 200; a dual-shaft motor 700 mounted between the first cavity 100 and the second cavity 200, a first power shaft 710 of which is connected to the first bidirectional air intake impeller 300, and a second power shaft 720 of which is connected to the second bidirectional air intake impeller 400.
[0020] Specifically, the first cavity 100 is in communication with the outside through a first air inlet 101 and a first air outlet 102. Air flow enters through the first air inlet 101 and flows out through the first air outlet 102. The first air duct 110 is a position defined in the first cavity 100 for installing the first bidirectional air intake impeller 300, and also plays a role in limiting the path of air flow. In FIG. 2, the rotating shaft of the first bidirectional air intake impeller 300 is mounted vertically. When the first bidirectional air intake impeller 300 rotates, air flow flows into the first cavity 100 from the first air inlet 101, then flows into the first bidirectional air intake impeller 300 from the upper surface of the first air duct 110, and also flows into the first bidirectional air intake impeller 300 from the lower surface of the first air duct 110. This means that the air flow above the first bidirectional air intake impeller 300 flows in vertically downward, and the air flow below flows in vertically upward. The bidirectional air intake effectively increases the air intake amount, and thereby effectively increases the exhaust amount.
[0021] Similarly, the second cavity 200 is connected to the outside via a second intake port 201 and a second exhaust port 202. Airflow enters through the second intake port 201 and exits through the second exhaust port 202. The second air duct 210 is a location defined within the second cavity 200 for installing the second bidirectional intake impeller 400 and also serves to restrict the airflow path. In Figure 2, the rotation axis of the second bidirectional intake impeller 400 is mounted vertically. As the second bidirectional intake impeller 400 rotates, airflow enters the second cavity 200 from the second intake port 201, then enters the second bidirectional intake impeller 400 from the top surface of the second air duct 210, and also enters the second bidirectional intake impeller 400 from the bottom surface of the second air duct 210. This means that the airflow above the second bidirectional intake impeller 400 flows in vertically downwards, and the airflow below it flows in vertically upwards, effectively increasing the intake volume through bidirectional intake, and consequently effectively increasing the exhaust volume.
[0022] With the rotational speed of the 2-axis motor 700 remaining constant, this invention employs bidirectional intake technology, doubling the intake and exhaust volumes compared to conventional unidirectional intake technology, effectively improving product performance.
[0023] Furthermore, the first bidirectional intake impeller 300 and the second bidirectional intake impeller 400 have their intermediate sections divided into upper and lower parts, both of which function as fans. As a result, when the two-axis motor 700 is started, the first bidirectional intake impeller 300 and the second bidirectional intake impeller 400 draw in air from both directions, accelerating the airflow and creating twice the intake volume.
[0024] Furthermore, the two-axis motor 700, the first bidirectional intake impeller 300, and the second bidirectional intake impeller 400 are mounted coaxially.
[0025] The condenser 500 primarily absorbs heat as the airflow passes through it, resulting in the airflow becoming cool air and being blown out from the first exhaust port 102. On the other hand, the evaporator 600 primarily heats itself as the airflow passes through it, resulting in the airflow becoming warm air and being blown out from the second exhaust port 202.
[0026] To explain more clearly, the first intake port 101, the first exhaust port 102, the second intake port 201, and the second exhaust port 202 may all be open structures, or they may be structures such as intake grilles or intake mesh panels, or they may be configured as filter mesh panels to serve as filters.
[0027] In one embodiment, the first cavity 100 is positioned above the second cavity 200, and the first cavity 100 and the second cavity 200 are separated by an inclined partition plate 800. A two-axis motor 700 is mounted on the partition plate 800. The first power shaft 710 and the second power shaft 720 of the two-axis motor 700 extend into the first air duct 110 and the second air duct 210, respectively, and are connected to the first bidirectional intake impeller 300 and the second bidirectional intake impeller 400.
[0028] Specifically, as shown in Figure 2, the partition plate 800 extends diagonally from approximately left to right, with the left side being higher and the right side lower. The first cavity 100 is located above the second cavity 200 and is separated by the partition plate 800, thereby preventing lateral flow of cold and hot air and avoiding any impact on the effectiveness of use.
[0029] The partition plate 800 can be either a flat or curved partition plate, as long as it performs its function as a partition. The partition plate 800 has a mounting position 810 for assembling the two-axis motor 700. The two-axis motor 700 can be fixed to the mounting position 810 with screws for stable installation.
[0030] In one embodiment, the first air duct 110 is provided with first air duct intake ports 111 corresponding to the upper and lower surfaces of the first bidirectional intake impeller 300, and is connected to the first cavity 100 via the first air duct intake ports 111, with the exhaust end of the first air duct 110 connected to the first exhaust port 102. The second air duct 210 is provided with second air duct intake ports 211 corresponding to the upper and lower surfaces of the second bidirectional intake impeller 400, and is connected to the second cavity 200 via the second air duct intake ports 211, with the exhaust end of the second air duct 210 connected to the second exhaust port 202. Specifically, the first air duct 110 is formed within the first cavity 100 by being surrounded by a shell component. The shell component may be integrally molded inside the first cavity 100, or it may be added to the inside of the first cavity 100 later, so that the first air duct 110 is partitioned within the first cavity 100. The shell component is provided with a first air duct intake port 111 directly opposite the first bidirectional intake impeller 300. When installed, the first bidirectional intake impeller 300 is brought close to the inner walls of the first air duct 110, specifically the upper and lower inner walls, so that when airflow flows in from the first air duct intake port 111, it is drawn directly and smoothly into the first bidirectional intake impeller 300. Similarly, the second air duct 210 is formed within the second cavity 200 by being enclosed by a shell component. The shell component may be integrally molded inside the second cavity 200, or it may be added to the inside of the second cavity 200 later, so that the second air duct 210 is partitioned within the second cavity 200. The shell component is provided with a second air duct intake port 211 directly opposite the second bidirectional intake impeller 400. When installed, the second bidirectional intake impeller 400 is positioned close to the inner walls of the second air duct 210, specifically the upper and lower inner walls, so that the airflow is drawn directly and smoothly into the second bidirectional intake impeller 400 when it flows in from the second air duct intake port 211. During operation, the two-axis motor 700 simultaneously drives the first bidirectional intake impeller 300 and the second bidirectional intake impeller 400. As shown in Figure 2, within the first cavity 100, the first bidirectional intake impeller 300 rotates clockwise. During rotation, external airflow flows into the first cavity 100 from the first intake port 101 on the right side, along the direction indicated by the arrow in Figure 2. The airflow then branches into two paths, flowing in from the first air duct intake ports 11 on the upper and lower surfaces of the first air duct 110 within the first cavity 100, along the direction of the arrow. After being drawn into the first bidirectional intake impeller 300, the air is discharged radially and exited from the first exhaust port 102 in Figure 1. As shown in Figure 2, within the second cavity 200, the second bidirectional intake impeller 400 rotates clockwise. During rotation, external airflow flows into the second cavity 200 from the second intake port 201 on the left side, along the direction indicated by the arrows in Figure 2. The airflow then branches into two paths, flowing in from the second air duct intake ports 211 on the upper and lower surfaces of the second air duct 210 within the second cavity 200, along the direction of the arrows. After being drawn into the second bidirectional intake impeller 400, the air is discharged radially and exited from the second exhaust port 202 on the right side of Figure 2.
[0031] In one embodiment, the housing 00 further includes the first cavity 100 and the second cavity 200 formed inside the housing 00, and the first intake port 101, the first exhaust port 102, the second intake port 201 and the second exhaust port 202 are arranged on the side surface of the housing 00.
[0032] Furthermore, the intake and exhaust directions of the first cavity 100 are at an angle; that is, an angle is formed between the first intake port 101 and the first exhaust port 102. On the other hand, the intake and exhaust directions of the second cavity 200 are in the same direction. In Figure 2, the first intake port 101 of the first cavity 100 is located on the right side, and the intake direction is from right to left, but the first exhaust port 102 is not located on the left side. As shown in Figure 1, the first exhaust port 102 is located on the adjacent side, that is, as shown in Figure 2, the exhaust direction is almost perpendicular to the plane of the paper, and the angle between the intake direction and the exhaust direction of the first cavity 100 is approximately 90°. Continuing to refer to Figure 2, the second intake port 201 of the second cavity 200 is located on the left side, with the intake direction from left to right, and the second exhaust port 202 is located on the right side, with the exhaust direction from left to right. This design method makes it difficult for the cold air discharged from the first exhaust port 102 to be drawn into the first intake port 101 or the second intake port 201, ensuring that the cold air can effectively cool the environment.
[0033] In one embodiment, a space is provided between the first air duct 110 and the inner bottom wall and inner top wall of the first cavity 100, and a space is provided between the second air duct 210 and the inner bottom wall and inner top wall of the second cavity 200, and the two-axis motor 700 has a motor body, and a first distance is formed between the motor body and the first air duct 110, and between the motor body and the second air duct 210. This structure does not affect the bidirectional intake of the first bidirectional intake impeller 300 and the second bidirectional intake impeller 400.
[0034] To ensure stable rotation of the motor, the first distance between the motor body and the first air duct 110, and the first distance between the motor body and the second air duct 210 should be equal.
[0035] Furthermore, the height of the first air intake port 101 is higher than the height of the first air duct 110, so the airflow flows in from the first air intake port 101 and directly to the first air duct air intake ports 111 located on the upper and lower surfaces of the first air duct 110, and the height of the second air intake port 201 is higher than the height of the second air duct 210, so the airflow flows in from the second air intake port 201 and directly to the second air duct air intake ports 211 located on the upper and lower surfaces of the second air duct 210.
[0036] As shown in Figure 2, it is clear that by placing the partition plate 800 inside the housing 00, the first cavity 100 and the second cavity 200 are separated, and the size of the first intake port 101 is larger than the size of the first exhaust port 102, and the size of the second intake port 201 is larger than the size of the second exhaust port 202. Since the first cavity 100 is an irregularly shaped cavity, the position of the first air duct 110 within the first cavity 100 will be described with reference to the height of the first air intake 101. In Figure 2, the first air duct 110 is located slightly above the approximate center of the height of the first air intake 101. The airflow enters from the first air intake 101, flows directly over the upper and lower surfaces of the first air duct 110, and is drawn into the first bidirectional intake impeller 300. If the first air duct 110 is too close to the top surface of the first cavity 100, after the airflow enters from the first intake port 101, some of the airflow enters directly from the first air duct intake port 111 located on the bottom surface of the first air duct 110, while other airflow bypasses the outside of the first air duct 110 and flows to the top surface of the first air duct 110 before entering from the first air duct intake port 111 on the top surface. This can easily result in a large difference in the amount of air intake between the top and bottom, affecting the intake and exhaust effect.
[0037] Similarly, since the second cavity 200 is an irregular cavity, the position of the second air duct 210 within the second cavity 200 will be described with respect to the height of the second air intake 201. In Figure 2, the second air duct 210 is located approximately in the center of the height of the second air intake 201. Airflow flows in from the second air intake 201 and directly to the upper and lower surfaces of the second air duct 210, and is driven by the second bidirectional intake impeller 400.
[0038] In one embodiment, the condenser 500 is attached to the first intake port 101, and the evaporator 600 is attached to the second intake port 201. When in operation, when an airflow from the outside flows into the first cavity 100 from the first intake port 101, it passes through the condenser 500, which absorbs the heat of the airflow and converts it into cold air. The cold air is then discharged from the first exhaust port 102 by driving the first bidirectional intake impeller 300. Simultaneously, when an external airflow enters the second cavity 200 from the second intake port 201, it passes through the evaporator 600, which heats the airflow and converts it into warm air. The warm air is then discharged from the second exhaust port 202 by the drive of the second bidirectional intake impeller 400.
[0039] The portable air conditioner includes the aforementioned air duct system. This system increases the intake area and intake volume of the portable air conditioner, thereby improving the cooling effect and user experience.
[0040] Based on the above description of the disclosed embodiments, those skilled in the art can implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Accordingly, the present invention is not limited to these embodiments shown herein, but extends to the broadest scope consistent with the principles and novel features disclosed herein. [Explanation of Symbols]
[0041] 00 Housing 100 First Cavity 101 First air intake 102 First exhaust port 110 First air duct 111 First air duct intake 200 Second Cavity 201 Second air intake 202 Second exhaust port 210 Second air duct 211 Second air duct intake 300 First bidirectional intake impeller 400 Second Bidirectional Intake Impeller 500 condenser 600 Evaporator 700 2-axis motor 710 1st power shaft 720 2nd power shaft 800 partition plates 810 Mounting position
Claims
1. It is an air duct system, A first cavity having a first air duct formed inside, the first cavity comprising a first intake port communicating with the first cavity and a first exhaust port communicating with the first cavity via the first air duct, A first bidirectional intake impeller is assembled within the first air duct, drawing in air bidirectionally in the axial direction and exhausting air radially, A condenser attached to the fluid path of the first cavity, A second cavity having a second air duct formed inside, the second cavity comprising a second intake port communicating with the second cavity and a second exhaust port communicating with the second cavity via the second air duct, A second bidirectional intake impeller is assembled within the second air duct, drawing in air bidirectionally in the axial direction and exhausting air radially, An evaporator attached to the fluid path of the second cavity, Includes a two-axis motor mounted between a first cavity and a second cavity, with its first power shaft connected to a first bidirectional intake impeller and its second power shaft connected to a second bidirectional intake impeller, An air duct system characterized by the following features.
2. The first cavity is positioned above the second cavity. The first cavity and the second cavity are separated by an inclined partition plate. The two-axis motor is mounted on a partition plate, and the first and second power shafts of the two-axis motor extend into the first and second air ducts, respectively, and are connected to the first and second bidirectional intake impellers. The air duct system according to feature 1.
3. The first air duct has first air duct intake ports corresponding to the upper and lower surfaces of the first bidirectional intake impeller, is connected to the first cavity via the first air duct intake ports, and the exhaust end of the first air duct is connected to the first exhaust port. The second air duct has second air duct intake ports corresponding to the upper and lower surfaces of the second bidirectional intake impeller, is connected to the second cavity via the second air duct intake ports, and the exhaust end of the second air duct is connected to the second exhaust port. The air duct system according to feature 1.
4. The housing further includes the first cavity and the second cavity formed inside the housing, and the first intake port, the first exhaust port, the second intake port and the second exhaust port are provided on the side of the housing. The air duct system according to any one of claims 1 to 3.
5. The intake and exhaust directions of the first cavity are at an angle, while the intake and exhaust directions of the second cavity are in the same direction. The air duct system according to feature 4.
6. A space is provided between the first air duct and the inner bottom wall and inner upper wall of the first cavity. A space is provided between the second air duct and the inner bottom wall and inner upper wall of the second cavity. The two-axis motor has a motor body, and a first distance is formed between the motor body and the first air duct, and between the motor body and the second air duct. The air duct system according to feature 1.
7. The height of the first air intake is higher than the height of the first air duct, and the airflow flows in from the first air intake and directly to the first air duct air intakes located on the upper and lower surfaces of the first air duct. The height of the second air intake is higher than the height of the second air duct, and the airflow flows in from the second air intake and directly to the second air duct air intakes located on the upper and lower surfaces of the second air duct. The air duct system according to feature 6.
8. The condenser is attached to the first air intake port, The evaporator is attached to the second air intake, The air duct system according to feature 4.
9. A portable air conditioner characterized by including an air duct system according to any one of claims 1 to 8.