Ventilation unit

Abstract

The ventilation unit is installed outdoors and used for ventilating a base station and comprises a case, the case comprises an air return cavity and an air supply cavity, the air supply cavity is arranged below the air return cavity, the air return cavity communicates with the air supply cavity, an air return opening is formed in the position, close to the upper end, of the rear end face of the case, and the air return cavity communicates with the interior of the room through the air return opening; an air supply outlet is formed in the position, close to the lower end, of the rear end face of the case and communicates with the air supply cavity and the indoor space, an exhaust outlet and an air inlet are formed in the position, close to the upper end, of the front end face of the case, the air inlet is formed below the exhaust outlet, and the exhaust outlet and the air inlet communicate with the air return cavity and the outdoor space. And the air valve assembly is arranged in the air return cavity, and the air valve assembly comprises adjustable air valve blades and is used for controlling opening and closing of the air outlet and the air inlet. The air feeder assembly is arranged in the air feeding cavity and comprises an air feeder. According to the ventilation unit, the air supply temperature can be adjusted according to needs, large-air-volume ventilation of a base station can be met, and maintenance personnel can conveniently maintain the ventilation unit.

Description

Technical Field

[0001] This application relates to the field of base station equipment, and in particular to a ventilation unit. Background Technology

[0002] Because the equipment inside base stations generates a lot of heat, dedicated air conditioners or ventilation units are commonly used for heat dissipation. Ventilation units are a common type of equipment, mainly used to achieve air circulation and exchange. The unit draws outdoor air directly into the room through the operation of the fan, carries away the heat emitted by the equipment, and then exhausts it to the outside through the exhaust vent.

[0003] When installing ventilation equipment, air inlets and outlets need to be made in the walls. Base stations generally have limited space, and the size of the openings in the walls is restricted, which also limits the size of the ventilation equipment. With the development of communication technology, the heat generated by the equipment in base stations is increasing, and conventional small ventilation units can no longer meet the requirements. High-volume ventilation equipment is needed to meet the heat dissipation needs of the equipment.

[0004] In existing technologies, base station ventilation units generally adopt a split installation method, which includes an air supply unit, an exhaust air valve, and an exhaust rain cover. This type of split ventilation unit requires the installation of three parts separately, which consumes more manpower and time during installation, and the air supply temperature cannot be adjusted, resulting in excessively low air supply temperature in winter. Utility Model Content

[0005] In view of this, this application provides a ventilation unit with an integrated structural design and precise adjustment of the supply air temperature. Its specific structure includes: a chassis, comprising a return air chamber and a supply air chamber, the supply air chamber being located below the return air chamber and communicating with it; a return air inlet located near the upper end of the rear end face of the chassis, connecting the return air chamber to the interior; a supply air inlet located near the lower end of the rear end face of the chassis, connecting the supply air chamber to the interior; an exhaust outlet and an air inlet located near the upper end of the front end face of the chassis, the air inlet being located below the exhaust outlet; both the exhaust outlet and the air inlet connecting the return air chamber to the outside; and a damper assembly located within the return air chamber. The damper assembly includes adjustable damper blades. When the damper blades are fully open, both the exhaust port and the inlet are fully open, and air entering the return air chamber from the return air inlet does not enter the supply air chamber and is entirely discharged from the exhaust port. When the damper blades are fully closed, both the exhaust port and the inlet are fully closed, and air entering the return air chamber from the return air inlet enters the supply air chamber. When the damper blades are partially open, both the exhaust port and the inlet are partially open, and air entering the return air chamber from the return air inlet can either enter the supply air chamber or be discharged from the exhaust port. A blower assembly, disposed in the supply air chamber, includes a blower.

[0006] With the aforementioned specific structure, the return air chamber and supply air chamber are integrated into the chassis, resulting in a simple structure and convenient installation and maintenance. Simultaneously, the opening and closing of the exhaust and inlet air vents are controlled by the damper blades in the damper assembly, allowing the ventilation unit to switch between three modes: external circulation (100% fresh air), internal circulation, and mixed air (internal and external circulation), thereby regulating the supply air temperature. When there is a cooling demand and the outdoor temperature meets the set conditions, the unit enters 100% fresh air mode; when there is no cooling demand and the indoor temperature meets the set requirements, the unit enters internal circulation mode; when there is a cooling demand and the outdoor temperature is low, it enters mixed air mode.

[0007] As a possible implementation, it also includes a front panel for covering the front end of the chassis. The front panel has an exhaust grille near the upper end that matches the exhaust vent, and an intake grille near the lower end that matches the intake vent. The front panel includes a partition that is positioned between the exhaust vent and the intake vent to isolate the exhaust vent from the intake vent.

[0008] By adopting the above possible implementation methods, the exhaust port and the air inlet are isolated by a partition, and the distance between the exhaust perforated grille and the air inlet perforated grille is increased, thereby indirectly increasing the distance between the exhaust port and the air inlet, and preventing the ventilation unit from drawing the exhaust air back into the air inlet.

[0009] As one possible implementation, a filter screen is provided in the front panel, and the filter screen is located in the area between the air intake perforated grille and the air intake.

[0010] By adopting the above-mentioned possible implementation methods, mosquitoes or other small animals can be prevented from entering the unit through the air inlet.

[0011] As a possible implementation, an air filter is also included, which is disposed between the return air chamber and the supply air chamber to filter the air entering the supply air chamber from the return air chamber.

[0012] As one possible implementation, a removable filter sealing plate is provided on the rear end face of the chassis corresponding to the position of the air filter, and a removable filter cover plate is provided on the front end face of the chassis corresponding to the position of the air filter.

[0013] Using the above-mentioned possible implementation methods, by removing the filter sealing plate, staff can remove or maintain the air filter from indoors; by removing the front cover and the filter cover, staff can remove or maintain the air filter from outdoors.

[0014] As one possible implementation, there are two blowers, and the left and right ends of the air supply chamber are respectively provided with mounting cavities. The two mounting cavities are respectively connected to the air supply outlet, and the two blowers are arranged in the two mounting cavities.

[0015] Using the above-mentioned possible implementation methods, the simultaneous operation of two air supply fans can meet the high air volume requirements of the base station. Furthermore, the two air supply fans are installed in independent mounting cavities, preventing the ventilation unit from experiencing increased wind resistance and noise due to mutual interference between the two fans.

[0016] As one possible implementation, a baffle is provided in the mounting cavity to guide the air entering the mounting cavity from the return air cavity to the air supply outlet so as to enter the room.

[0017] As one possible implementation, the front end of the chassis is provided with a removable fan cover plate corresponding to the air supply cavity.

[0018] By adopting the above-mentioned possible implementation method, by removing the front fan cover and the fan cover, the staff can disassemble or maintain the blower from the outside.

[0019] As a possible implementation, a rear panel is also included to cover the rear end of the chassis. The rear panel has a first opening near the upper end that matches the return air vent, and the first opening connects the return air vent to the room. The rear panel also has a second opening near the lower end that matches the supply air vent, and the second opening connects the supply air vent to the room.

[0020] As one possible implementation, the return air chamber includes multiple baffles, which are used to control the opening and closing of the exhaust port and the air inlet in conjunction with the opening and closing of the air valve blades. Attached Figure Description

[0021] The various technical features of this application and their relationships will be further explained below with reference to the accompanying drawings. The drawings are exemplary; some technical features are not shown to scale, and some drawings may omit technical features commonly used in the art to which this application pertains that are not essential for understanding and implementing this application, or additionally show technical features that are not essential for understanding and implementing this application. In other words, the combination of various technical features shown in the drawings is not intended to limit this application. Furthermore, throughout this application, the same reference numerals refer to the same things. Specific descriptions of the drawings are as follows:

[0022] Figure 1 This is a full sectional view of the ventilation unit involved in the embodiment of this application;

[0023] Figure 2 This is a full sectional view of the ventilation unit in external circulation mode according to an embodiment of this application;

[0024] Figure 3 This is a full sectional view of the ventilation unit in the mixed air mode according to an embodiment of this application;

[0025] Figure 4 This is a full sectional view of the ventilation unit in internal circulation mode according to an embodiment of this application;

[0026] Figure 5 This is an exploded view of the ventilation unit involved in the embodiments of this application;

[0027] Figure 6 This is a front view of the ventilation unit involved in the embodiment of this application;

[0028] Figure 7 This is a rear view of the ventilation unit involved in the embodiment of this application;

[0029] Figure 8 for Figure 7 A cross-sectional view of the AA logo.

[0030] Explanation of reference numerals in the attached diagram: 10-Chassis; 20-Rear panel; 30-Front panel; 31-Baffle; 32-Filter screen; 33-Exhaust grille; 34-Inlet grille; 100-Return air chamber; 110-Exhaust vent; 120-Inlet; 130-Baffle plate; 140-Return air vent; 200-Supply air chamber; 210-Guide plate; 220-Fan cover; 230-Supply air vent; 300-Air filter; 310-Filter cover; 320-Filter sealing plate; 400-Damper assembly; 410-Damper blade; 500-Supply fan. Detailed Implementation

[0031] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0032] This application provides a ventilation unit, installed outdoors, such as... Figure 1 As shown, the system specifically includes a chassis 10. Chassis 10 consists of a return air chamber 100 and a supply air chamber 200. A return air inlet 140 is located near the upper end of the rear end face of chassis 10, connecting the return air chamber 100 to the indoor environment. A supply air inlet 230 is located near the lower end of the rear end face of chassis 10, connecting the supply air chamber 200 to the indoor environment. An exhaust outlet 110 and an air inlet 120 are located near the upper end of the front end face of chassis 10, with the air inlet 120 positioned below the exhaust outlet 110. Both the exhaust outlet 110 and the air inlet 120 connect the return air chamber 100 to the outside environment.

[0033] Among them, such as Figure 1 As shown, the air supply cavity 200 is located below the return air cavity 100, and the return air cavity 100 is connected to the air supply cavity 200.

[0034] Among them, such as Figure 1 As shown, a damper assembly 400 is installed in the return air chamber 100. The damper assembly 400 includes adjustable damper blades 410. The return air chamber 100 includes multiple baffles 130, which are used to control the opening and closing of the exhaust port 110 and the air inlet 120 in conjunction with the opening and closing of the damper blades 410. This allows the ventilation unit involved in this embodiment to switch between three modes: external circulation (fresh air), internal circulation, and mixed air (internal and external circulation), thereby achieving the effect of regulating the supply air temperature. Specifically, as follows:

[0035] like Figure 2 As shown, in the external circulation mode: when the base station has a cooling requirement and the outdoor temperature meets the set temperature, the air valve blade 410 is adjusted to be fully open, so that both the exhaust port 110 and the air inlet 120 are fully open. The air entering the return air chamber 100 from the return air inlet 140 does not enter the supply air chamber 200 and is all discharged from the exhaust port 110. Outside air enters the return air chamber 100 from the air inlet 120 and enters the base station room through the supply air chamber 200, achieving the effect of cooling the base station.

[0036] like Figure 3 As shown, in the internal circulation mode: when the base station has no cooling requirement and the indoor temperature meets the set temperature, the damper blades 410 are adjusted to be completely closed, so that both the exhaust port 110 and the inlet port 120 are completely closed. All the air entering the return air chamber 100 from the return air inlet 140 enters the supply air chamber 200 and re-enters the room, preventing localized overheating caused by stagnant air. Simultaneously, outdoor air is not introduced into the room, indirectly extending the service life of the air filter 300.

[0037] like Figure 4 As shown, in the mixed-air mode: when the base station has a cooling requirement and the outdoor temperature is lower than the set temperature, the damper blade 410 is adjusted to be half-open, so that both the exhaust port 110 and the air inlet 120 are half-open. Part of the air entering the return air chamber 100 from the return air inlet 140 enters the supply air chamber 200, and part is discharged from the exhaust port 110, achieving a moderate cooling effect for the base station. In this mode, the intake air temperature can be controlled by adjusting the damper blade 410 to prevent condensation on the surface of equipment inside the base station or low-temperature damage caused by excessively low supply air temperature.

[0038] Among them, such as Figure 7 , 8 As shown, a blower assembly 500, comprising two blowers 500, is installed in the air supply cavity 200. The simultaneous operation of multiple blowers 500 can meet the high air volume requirements of the base station during ventilation. Mounting cavities are respectively provided at the left and right ends of the air supply cavity 200. The two mounting cavities are respectively connected to the air outlet 230, and the two blowers 500 are disposed in the two mounting cavities. A guide vane 210 is provided in the mounting cavity to guide the air entering the mounting cavity from the return air cavity 100 to the air outlet 230 and thus into the room.

[0039] Among them, such as Figure 5 As shown, a removable fan cover 220 is provided on the front side of the casing 10 at the position corresponding to the air supply cavity 200. By removing the fan cover 220, maintenance personnel can disassemble or maintain the fan from the outside.

[0040] In this embodiment, there are two blowers 500. In other embodiments, other numbers of blowers 500 may be used, such as three or four blowers 500.

[0041] In this embodiment, the two blowers 500 are arranged vertically, occupying a small volume in the transverse direction of the housing 10. Therefore, the transverse dimension of the housing 10 can be designed to be smaller. At the same time, the two blowers 500 are located in independent mounting cavities, avoiding greater wind resistance and noise caused by mutual interference when the two blowers 500 are working.

[0042] Among them, such as Figure 1 As shown, an air filter 300 is installed between the return air chamber 100 and the supply air chamber 200 to filter the air entering the supply air chamber 200 from the return air chamber 100. A removable filter sealing plate 320 is provided on the rear end face of the chassis 10 corresponding to the position of the air filter 300. A removable filter cover plate 310 is provided on the front end face of the chassis 10 corresponding to the position of the air filter 300. By removing the filter sealing plate 320, maintenance personnel can directly remove or perform maintenance on the air filter 300 from indoors. By removing the filter cover plate 310, maintenance personnel can directly remove or perform maintenance on the air filter 300 from outdoors.

[0043] Among them, such as Figure 6 As shown, the front panel 30 covers the front surface of the chassis 10. Near the upper part of the front panel 30, there is an exhaust grille 33 that matches the exhaust vent 110. Near the lower part of the front panel 30, there is an intake grille 34 that matches the air inlet 120. Figure 1 As shown, a partition 31 is installed in the front panel 30. The partition 31 is positioned between the exhaust vent 110 and the air inlet 120 to isolate the exhaust vent 110 and the air inlet 120. The exhaust grille 33 and the air inlet grille 34, together with the partition 31, can increase the distance between the exhaust vent 110 and the air inlet 120, preventing the air exhausted from the exhaust vent 110 from directly entering the room through the air inlet 120.

[0044] In this embodiment, as Figure 1 As shown, a filter screen 32 is also installed between the air inlet perforated grille 34 and the air inlet 120 to prevent mosquitoes or other small animals from entering the unit, and can also filter out larger plastic bags and other garbage and debris.

[0045] Among them, such as Figure 1 As shown, the rear end of the chassis 10 is covered by a rear panel 20, and the chassis 10 is mounted on the wall via the rear panel 20. Near the upper end of the rear panel 20, a first opening is provided to mate with a return air vent 140, connecting the return air vent 140 to the interior. Near the lower end of the rear panel 20, a second opening is provided to mate with a supply air vent 230, connecting the supply air vent 230 to the interior.

[0046] In summary, the ventilation unit involved in this application embodiment features an integrated structural design, facilitating overall installation on the exterior wall. By adjusting the opening and closing size of the exhaust port 110 and the air inlet 120 via the damper blades 410, the ventilation unit involved in this application embodiment includes external circulation mode, internal circulation mode, and mixed air mode. In mixed air mode, the damper blades 410 can control the airflow of external air into the room, thereby controlling the outlet air temperature. Furthermore, the two supply fans 500 are vertically arranged in the mounting cavity, which, while meeting the demand for large airflow, also reduces the lateral volume of the casing 10, making the ventilation unit involved in this application embodiment suitable for more installation scenarios.

[0047] The term “comprising” as used throughout this application should not be construed as limited to what is listed thereafter; it does not exclude other structural elements or steps.

[0048] It is understood that those skilled in the art can combine the features mentioned in one or more embodiments throughout this application with features from other embodiments in any appropriate manner to implement this application.

[0049] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the technical concept of this application, all of which fall within the scope of protection of this application.

Claims

1. A ventilation unit, installed outdoors, characterized in that, include: A chassis, comprising a return air chamber and a supply air chamber, wherein the supply air chamber is disposed below the return air chamber and communicates with the supply air chamber; a return air inlet is disposed near the upper end of the rear end face of the chassis, the return air inlet communicating with the return air chamber and the interior; a supply air inlet is disposed near the lower end of the rear end face of the chassis, the supply air inlet communicating with the supply air chamber and the interior; and an exhaust air inlet and an air inlet are disposed near the upper end of the front end face of the chassis, the air inlet being disposed below the exhaust air inlet, both the exhaust air inlet and the air inlet communicating with the return air chamber and the outside. An air valve assembly is disposed in the return air chamber. The air valve assembly includes adjustable air valve blades. When the air valve blades are adjusted to be fully open, both the exhaust port and the inlet port are fully open. Air entering the return air chamber from the return air port does not enter the supply air chamber and is completely discharged from the exhaust port. When the air valve blades are adjusted to be fully closed, both the exhaust port and the inlet port are fully closed. Air entering the return air chamber from the return air port enters the supply air chamber. When the air valve blades are adjusted to be half open, both the exhaust port and the inlet port are half open. Air entering the return air chamber from the return air port can either enter the supply air chamber or be discharged from the exhaust port. A blower assembly, disposed in the air supply chamber, includes a blower.

2. The ventilation unit according to claim 1, characterized in that, It also includes a front panel for covering the front end of the chassis. The front panel is provided with an exhaust grille near the upper end to match the exhaust port, and the front panel is provided with an intake grille near the lower end to match the air inlet. The front panel includes a partition, which is disposed between the exhaust port and the air inlet to isolate the exhaust port from the air inlet.

3. The ventilation unit according to claim 2, characterized in that, A filter screen is provided in the front panel, and the filter screen is located in the area between the air intake perforated grille and the air intake.

4. The ventilation unit according to claim 1, characterized in that, It also includes an air filter, which is disposed between the return air chamber and the supply air chamber to filter the air entering the supply air chamber from the return air chamber.

5. The ventilation unit according to claim 4, characterized in that, A removable filter sealing plate is provided on the rear end face of the chassis corresponding to the position of the air filter, and a removable filter cover plate is provided on the front end face of the chassis corresponding to the position of the air filter.

6. The ventilation unit according to claim 1, characterized in that, There are two blowers. The left and right ends of the air supply chamber are respectively provided with mounting cavities. The two mounting cavities are respectively connected to the air supply outlet. The two blowers are arranged in the two mounting cavities.

7. The ventilation unit according to claim 6, characterized in that, The mounting cavity is equipped with a baffle plate, which is used to guide the air entering the mounting cavity from the return air cavity to the air supply outlet so that it enters the room.

8. The ventilation unit according to claim 6, characterized in that, A removable fan cover is provided on the front side of the chassis at the location corresponding to the air supply cavity.

9. The ventilation unit according to claim 1, characterized in that, It also includes a rear panel for covering the rear end of the chassis. The rear panel has a first opening near the upper end that matches the return air vent, and the first opening connects the return air vent to the room. The rear panel has a second opening near the lower end that matches the air supply vent, and the second opening connects the air supply vent to the room.

10. The ventilation unit according to claim 1, characterized in that, The return air chamber includes multiple baffles, which are used to control the opening and closing of the exhaust port and the air inlet in conjunction with the opening and closing of the air valve blades.

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