Cabinet type air conditioner indoor unit and air duct assembly thereof

Abstract

The utility model discloses an indoor unit air duct assembly of a cabinet type air conditioner, relates to the field of air conditioners, and aims to simplify the structure of the air duct assembly and enable the air duct assembly to discharge air from the upper part and / or the lower part. According to the technical scheme, the air duct assembly of the indoor unit of the cabinet type air conditioner comprises a shell, the shell is provided with an upper air outlet, an upper air door plate is arranged at the upper air outlet, the shell is provided with a lower air outlet, and a lower air door plate is arranged at the lower air outlet. A first air inlet and a second air inlet are formed in the back face of the shell, a first fan is fixedly installed at the first air inlet, and a first upper air flue communicating with the first air inlet and the upper air outlet and a first lower air flue communicating with the first air inlet and the lower air outlet are arranged in the shell. A second fan is fixedly installed at the second air inlet, and a second upper air duct communicating with the second air inlet and the upper air outlet and a second lower air duct communicating with the second air inlet and the lower air outlet are arranged in the shell. The air duct assembly is used for the design of the air duct assembly of the cabinet type air conditioner indoor unit.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning, specifically to a duct assembly for a cabinet-type air conditioner indoor unit, and a cabinet-type air conditioner indoor unit having the duct assembly. Background Technology

[0002] Air conditioners have both heating and cooling functions. When cooling, the cold air blown out by the indoor unit sinks, requiring the airflow to rise; when heating, the hot air blown out by the indoor unit rises, requiring the airflow to fall. Currently, most cabinet air conditioner indoor unit air duct components only have one air outlet, which cannot simultaneously meet the requirements of upward airflow during cooling and downward airflow during heating. Even if air deflectors are installed at the air outlet to adjust the airflow direction, there are still significant dead air zones and large temperature gradients between different areas, resulting in localized overcooling or overheating, affecting the user experience.

[0003] Patent application publication number CN 119164067 A discloses a self-cleaning control method for an air conditioner with humidification function and a cabinet air conditioner. Through the design of a flow path control structure, the air conditioner can achieve a single-downward airflow heating mode (air intake at the top, air outlet at the bottom) or a single-upward airflow cooling mode (air intake at the bottom, air outlet at the top) and a self-cleaning mode where airflow circulates within the air conditioner. The cabinet air conditioner disclosed in this patent has both an upper and lower air intake / exhaust vent, resulting in a very complex flow path control structure and a complex control method. Furthermore, the upper and lower air intake vents of the cabinet air conditioner disclosed in this patent cannot simultaneously exhaust air, thus preventing rapid circulation of indoor air for rapid cooling or heating. Utility Model Content

[0004] This utility model provides a duct assembly for a cabinet-type air conditioner indoor unit. The purpose is to simplify the structure of the duct assembly for the cabinet-type air conditioner indoor unit, and at the same time enable the duct assembly to discharge air only from the top, only from the bottom, or both at the top and bottom simultaneously.

[0005] The technical solution adopted in this utility model is: a cabinet-type air conditioner indoor unit air duct assembly, including a housing and a first fan and a second fan installed on the housing. The six surfaces of the housing are defined as the front, back, left side, right side, top, and bottom surfaces. The thickness of the housing is the distance between the front and back surfaces, and the height of the housing is the distance between the bottom and top surfaces. An upper air outlet is provided on the top surface of the housing or near the top surface of the front surface of the housing. An upper air damper is provided at the upper air outlet for closing the upper air outlet. The front surface of the housing near the bottom surface... The housing has a lower air outlet, and a lower air door plate for sealing the lower air outlet is provided at the lower air outlet. The back of the housing has a first air inlet and a second air inlet. A first fan is fixedly installed at the first air inlet. The housing has a first upper air duct connecting the first air inlet and the upper air outlet, and a first lower air duct connecting the first air inlet and the lower air outlet. A second fan is fixedly installed at the second air inlet. The housing has a second upper air duct connecting the second air inlet and the upper air outlet, and a second lower air duct connecting the second air inlet and the lower air outlet.

[0006] In order to maximize the flow cross-sectional area of ​​the first and second air inlets and control the width of the housing, where the width of the housing is the distance between the bottom and top surfaces, the first and second air inlets are further provided in the middle of the back of the housing along the height direction of the housing, and the first and second air inlets are the same size.

[0007] To further control the thickness of the casing, the first fan and the second fan are staggered in the thickness direction of the casing. A partition is provided inside the casing to separate the "first upper air duct and first lower air duct on the air outlet side of the first fan" from the "second upper air duct and second lower air duct on the air outlet side of the second fan". The first upper air duct and the second upper air duct are stacked along the thickness direction of the casing, and the first lower air duct and the second lower air duct are stacked along the thickness direction of the casing.

[0008] In order to reduce the airflow velocity after passing through the first and second fans and being blown out of the upper and lower air outlets, the cross-sectional area of ​​the first upper air duct, the first lower air duct, the second upper air duct, and the second lower air duct is further increased along the airflow direction.

[0009] To optimize the airflow pattern after passing through the first and second fans, the following further details are provided: the air inlet ends of the first upper air duct and the first lower air duct are arranged along the tangential direction of the first air inlet, and the air inlet ends of the second upper air duct and the second lower air duct are arranged along the tangential direction of the second air inlet.

[0010] This utility model also provides a cabinet-type air conditioner indoor unit. The cabinet-type air conditioner indoor unit includes a cabinet formed by a rear frame assembly and a panel, and an evaporator assembly and an air duct assembly located inside the cabinet, wherein the air duct assembly is any of the above-mentioned "cabinet-type air conditioner indoor unit air duct assembly", and the evaporator assembly is located on the back of the housing and covers the first air inlet and the second air inlet.

[0011] The beneficial effects of this utility model are as follows: an upper air damper is provided at the upper air outlet of the housing, and a lower air damper is provided at the lower air outlet of the housing. The upper and lower air dampers are independently controlled. Either the upper or lower air damper can be opened, or they can be opened simultaneously. This allows the air duct assembly to output air only from the upper air outlet, only from the lower air outlet, or simultaneously from both the upper and lower air outlets. This achieves the best comfort experience of cold air blowing on the head and hot air blowing on the feet, and also allows the upper and lower air outlets to output air simultaneously, maximizing the circulation of indoor air and achieving the purpose of rapid cooling, heating, or ventilation.

[0012] The first and second air inlets are located on the back side, which has the largest surface area of ​​the housing, maximizing their cross-sectional area and facilitating heat exchange between the airflow and the evaporator assembly located on the back side of the housing. The first upper air duct, first lower air duct, second upper air duct, and second lower air duct are all located inside the housing, allowing for flexible arrangement, reducing the width and thickness of the housing, and simplifying its structure. Attached Figure Description

[0013] Figure 1 This is an exploded view of a partial structure of the indoor unit of the cabinet-type air conditioner of this utility model.

[0014] Figure 2 Figure 1 A schematic diagram of the airflow path when both the upper and lower air outlets of the air duct assembly are open.

[0015] Figure 3 Figure 1 A schematic diagram of the airflow path of the air duct assembly when the upper air outlet is open and the lower air outlet is closed.

[0016] Figure 4 yes Figure 1 A schematic diagram of the airflow path of the air duct component in the middle when the upper air outlet is closed and the lower air outlet is open.

[0017] Figure 5 yes Figure 1 A schematic diagram of the air duct assembly in the structure on a cross section perpendicular to the thickness direction of the housing.

[0018] Figure 6 yes Figure 1 A schematic diagram of the air duct assembly in another section perpendicular to the thickness direction of the housing.

[0019] Reference numerals in the attached drawings: housing 1, upper air outlet 1-1, lower air outlet 1-2, first air inlet 1-3, second air inlet 1-4, first upper air duct 1-5, first lower air duct 1-6, second upper air duct 1-7, second lower air duct 1-8, middle partition 1-9, first fan 2, second fan 3, upper air damper 4, lower air damper 5, rear frame assembly 6, evaporator assembly 7. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] The first subject of this utility model is the air duct assembly for a cabinet-type air conditioner indoor unit. See also Figures 1-6 The air duct assembly of the indoor unit of the cabinet air conditioner includes a housing 1 and a first fan 2 and a second fan 3 installed on the housing 1. The six surfaces of the housing 1 are defined as the front, back, left side, right side, top, and bottom. The thickness of the housing 1 is the distance between the front and back surfaces, and the height of the housing 1 is the distance between the bottom and top surfaces. When the indoor unit of the cabinet air conditioner is placed on a level surface, the bottom surface of the housing 1 faces upwards, the top surface faces upwards, and the front surface of the housing 1 faces the user.

[0022] An upper air outlet 1-1 is provided on the top surface of the housing 1 or near the top surface of the front of the housing 1. An upper damper plate 4 is provided at the upper air outlet 1-1 for closing the upper air outlet 1-1. The upper damper plate 4 moves at the upper air outlet 1-1 by means of translation, flipping, etc. The upper damper plate 4 can partially or completely close the upper air outlet 1-1, for example, see [reference needed]. Figure 4 The upper air damper 4 completely seals the upper air outlet 1-1; the upper air damper 4 can also be moved away from the upper air outlet 1-1, allowing the upper air outlet 1-1 to be completely or partially open, for example, see [reference needed]. Figure 2 and Figure 3 The upper air damper 4 does not obstruct the upper air outlet 1-1 at all, meaning the upper air outlet 1-1 is completely open. The upper air outlet 1-1 is located on the top surface of the housing 1, allowing for a higher air outlet angle and a cleaner appearance for the indoor unit's panel. Positioning the upper air outlet 1-1 near the top of the front of the housing 1 avoids dust accumulation at the outlet, which would otherwise be a problem if it were located on the top surface of the housing 1.

[0023] The front of the housing 1, near the bottom, has a lower air outlet 1-2. The housing 1 has a lower air outlet 1-2 with a lower air damper 5 for closing it. The lower air damper 5 can move at the lower air outlet 1-2 by translation, flipping, or other methods. The lower air damper 5 can partially or completely close the lower air outlet 1-2, for example, see [reference needed]. Figure 3The lower air vent 5 completely seals the lower air outlet 1-2; the lower air vent 5 can also be moved away from the lower air outlet 1-2, allowing the lower air outlet 1-2 to be completely or partially open, for example, see [link to relevant documentation]. Figure 2 and Figure 4 The lower air vent 5 does not obstruct the lower air outlet 1-2 at all, that is, the lower air outlet 1-2 is completely open.

[0024] The back of the housing 1 is provided with a first air inlet 1-3 and a second air inlet 1-4. A first fan 2 is fixedly installed at the first air inlet 1-3. The housing 1 is provided with a first upper air duct 1-5 connecting the first air inlet 1-3 and the upper air outlet 1-1. The housing 1 is also provided with a first lower air duct 1-6 connecting the first air inlet 1-3 and the lower air outlet 1-2. A second fan 3 is fixedly installed at the second air inlet 1-4. The housing 1 is provided with a second upper air duct 1-7 connecting the second air inlet 1-4 and the upper air outlet 1-1. The housing 1 is provided with a second lower air duct 1-8 connecting the second air inlet 1-4 and the lower air outlet 1-2.

[0025] When both the upper air outlet 1-1 and the lower air outlet 1-2 are open, such as Figure 2 As shown, under the action of the first fan 2, the airflow enters the first fan 2 through the first air inlet 1-3, and then splits into two airflows. The two airflows enter the first upper air duct 1-5 and the first lower air duct 1-6 respectively, and then are blown out from the upper air outlet 1-1 and the lower air outlet 1-2 respectively. At the same time, under the action of the second fan 2, the airflow enters the second fan 3 through the second air inlet 1-4, and then splits into two airflows. The two airflows enter the second upper air duct 1-7 and the second lower air duct 1-8 respectively, and then merge with the airflows blown out from the first upper air duct 1-5 and the first lower air duct 1-6, and finally are blown out from the upper air outlet 1-1 and the lower air outlet 1-2.

[0026] When only the upper air outlet 1-1 is open, such as Figure 3 As shown, under the action of the first fan 2, the airflow enters the first fan 2 through the first air inlet 1-3, then enters the first upper air duct 1-5, and is finally blown out from the upper air outlet 1-1. At the same time, under the action of the second fan 2, the airflow enters the second fan 3 through the second air inlet 1-4, then enters the second upper air duct 1-7, and merges with the airflow blown out from the first upper air duct 1-5, and finally is blown out from the upper air outlet 1-1.

[0027] When only the lower air outlet 1-1 is open, such as Figure 4 As shown, under the action of the first fan 2, the airflow enters the first fan 2 through the first air inlet 1-3, then enters the first lower air duct 1-6, and is finally blown out from the lower air outlet 1-2. At the same time, under the action of the second fan 2, the airflow enters the second fan 3 through the second air inlet 1-4, then enters the second lower air duct 1-8, and merges with the airflow blown out from the first lower air duct 1-6, and finally is blown out from the lower air outlet 1-2.

[0028] The diameters of the first air inlet 1-3 and the second air inlet 1-4 are often close to the width of the housing 1, where the width of the housing 1 is the distance between the bottom and top surfaces of the housing 1. In order to maximize the flow cross-sectional area of ​​the first air inlet 1-3 and the second air inlet 1-4 and control the width of the housing 1, the first air inlet 1-3 and the second air inlet 1-4 are provided in the middle of the back of the housing 1 along the height direction of the housing 1, and the first air inlet 1-3 and the second air inlet 1-4 are the same size.

[0029] To control the thickness of the housing 1, the first fan 2 and the second fan 3 are staggered in the thickness direction of the housing 1. This staggered arrangement also facilitates the arrangement of the first upper air duct 1-5, the first lower air duct 1-6, the second upper air duct 1-7, and the second lower air duct 1-8. The housing 1 contains a central partition 1-9, which is generally integral with the housing 1. The central partition 1-9 separates the "first upper air duct 1-5 and first lower air duct 1-6 on the air outlet side of the first fan 2" from the "second upper air duct 1-7 and second lower air duct 1-8 on the air outlet side of the second fan 3". The first upper air duct 1-5 and the second upper air duct 1-7 are stacked along the thickness direction of the housing 1, and the first lower air duct 1-6 and the second lower air duct 1-8 are also stacked along the thickness direction of the housing 1.

[0030] After passing through the first fan 2 and the second fan 3, the airflow direction changes vertically. To optimize the airflow velocity and flow pattern, the main focus is on reducing the airflow velocity exiting from the upper outlet 1-1 and the lower outlet 1-2 after passing through the first fan 2 and the second fan 3. Figure 5 and Figure 6 As shown, the cross-sectional areas of the first upper air duct 1-5, the first lower air duct 1-6, the second upper air duct 1-7, and the second lower air duct 1-8 continuously increase along the airflow direction. To optimize the airflow pattern after passing through the first fan 2 and the second fan 3, the air inlets of the first upper air duct 1-5 and the first lower air duct 1-6 are arranged tangentially to the first air inlet 1-3, and the air inlets of the second upper air duct 1-7 and the second lower air duct 1-8 are arranged tangentially to the second air inlet 1-4. Figure 5 and Figure 6 As shown.

[0031] The second subject of this utility model is a cabinet-type air conditioner indoor unit. See also Figure 1The cabinet-type air conditioner indoor unit includes a cabinet formed by a rear frame assembly 6 and a panel, and an evaporator assembly 7 and an air duct assembly located inside the cabinet. The air duct assembly is the cabinet-type air conditioner indoor unit air duct assembly described in the first topic above. The evaporator assembly 7 is located on the back of the housing 1 and covers the first air inlet 1-3 and the second air inlet 1-4. The evaporator assembly 7 is generally arc-shaped and completely covers the first air inlet 1-3 and the second air inlet 1-4. The rear frame assembly 6 has a ventilation grille at a position corresponding to the evaporator assembly 7.

Claims

1. A cabinet-type air conditioner indoor unit air duct assembly, comprising a housing (1) and a first fan (2) and a second fan (3) installed on the housing (1), wherein the six surfaces of the housing (1) are defined as the front, back, left side, right side, top, and bottom surfaces, and the thickness of the housing (1) is the distance between the front and back surfaces, and the height of the housing (1) is the distance between the bottom and top surfaces, characterized in that: An upper air outlet (1-1) is provided on the top surface of the housing (1) or on the front surface of the housing (1) near the top surface. An upper air outlet (4) is provided on the upper air outlet (1-1) for sealing the upper air outlet (1-1). A lower air outlet (1-2) is provided on the front surface of the housing (1) near the bottom surface. A lower air outlet (5) is provided on the lower air outlet (1-2) for sealing the lower air outlet (1-2). The back of the housing (1) is provided with a first air inlet (1-3) and a second air inlet (1-4). A first fan (2) is fixedly installed at the first air inlet (1-3). The housing (1) is provided with a first upper air duct (1-5) connecting the first air inlet (1-3) and the upper air outlet (1-1). The housing (1) is provided with a first lower air duct (1-6) connecting the first air inlet (1-3) and the lower air outlet (1-2). A second fan (3) is fixedly installed at the second air inlet (1-4). The housing (1) is provided with a second upper air duct (1-7) connecting the second air inlet (1-4) and the upper air outlet (1-1). The housing (1) is provided with a second lower air duct (1-8) connecting the second air inlet (1-4) and the lower air outlet (1-2).

2. The indoor unit air duct assembly of claim 1, wherein: A first air inlet (1-3) and a second air inlet (1-4) are provided in the middle of the back of the housing (1) along the height direction of the housing (1). The first air inlet (1-3) and the second air inlet (1-4) are the same size.

3. The indoor unit air duct assembly of claim 2, wherein: The first fan (2) and the second fan (3) are staggered in the thickness direction of the housing (1). The housing (1) is provided with a partition (1-9). The partition (1-9) separates the "first upper air duct (1-5) and the first lower air duct (1-6) on the air outlet side of the first fan (2)" from the "second upper air duct (1-7) and the second lower air duct (1-8) on the air outlet side of the second fan (3)". The first upper air duct (1-5) and the second upper air duct (1-7) are stacked in the thickness direction of the housing (1), and the first lower air duct (1-6) and the second lower air duct (1-8) are stacked in the thickness direction of the housing (1).

4. The indoor unit air duct assembly of claim 1, 2 or 3, wherein: The cross-sectional area of ​​the first upwind duct (1-5), the first downwind duct (1-6), the second upwind duct (1-7), and the second downwind duct (1-8) continuously increases along the airflow direction.

5. The indoor unit air duct assembly of claim 1, 2 or 3, wherein: The air inlets of the first upper air duct (1-5) and the first lower air duct (1-6) are arranged along the tangent of the first air inlet (1-3), and the air inlets of the second upper air duct (1-7) and the second lower air duct (1-8) are arranged along the tangent of the second air inlet (1-4).

6. A cabinet type indoor unit of an air conditioner, comprising a cabinet formed by a rear frame assembly (6) and a panel, and an evaporator assembly (7) and an air duct assembly located in the cabinet, characterized in that: The air duct assembly is the air duct assembly of the cabinet air conditioner indoor unit as described in any one of claims 1 to 5 above, and the evaporator assembly (7) is located on the back of the housing (1) and covers the first air inlet (1-3) and the second air inlet (1-4).

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