Air treatment unit

Abstract

The utility model discloses an air processing unit, which relates to the technical field of air conditioners and comprises a shell and a heat exchanger. The angle between the heat exchanger and the indoor air return direction is smaller than 90 degrees. The heat exchanger comprises an air inlet face, an air exhaust face, an air return face and an air supply face. The air inlet surface is a contact surface of outdoor inlet air and the heat exchanger; the air exhaust surface is the side surface of the heat exchanger through which outdoor exhaust air passes; the air return surface is a contact surface of indoor return air and the heat exchanger; the air supply surface is the side surface of the heat exchanger through which indoor supplied air passes; the air inlet surface and the air exhaust surface are oppositely arranged; the air return surface is opposite to the air supply surface; an air inlet duct is arranged in the shell; the air inlet channel is used for guiding outdoor air to the air inlet face, so that the heat exchanger is obliquely arranged, and the air processing unit can still guarantee a certain refrigerating capacity under the condition that the space is limited.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air processing unit. Background Art

[0002] With the vigorous development of the digital economy, data centers, as the carrier of the digital economy, have developed rapidly in recent years. In order to maintain the smooth operation of data centers or computer rooms, there are certain requirements for the cooling capacity in data centers and computer rooms.

[0003] In the construction of computer rooms and the renovation of old computer rooms, high requirements are placed on the depth and height of the units. Given the limited space in the computer room, how to ensure the cooling capacity of the computer room while utilizing natural cooling has become an urgent issue to be resolved. Utility Model Content

[0004] The utility model provides an air processing unit, which helps to utilize natural cooling and ensure the refrigeration capacity of the machine room under the condition of limited space.

[0005] On the one hand, the utility model provides an air handling unit, comprising: a shell and a heat exchanger; the angle between the heat exchanger and the indoor return air direction is less than 90 degrees; the heat exchanger includes an air inlet surface, an air exhaust surface, an air return surface and an air supply surface; the air inlet surface is the contact surface between the outdoor air inlet and the heat exchanger; the air exhaust surface is the side of the heat exchanger through which the outdoor exhaust air passes; the air return surface is the contact surface between the indoor return air and the heat exchanger; the air supply surface is the side of the heat exchanger through which the indoor supply air passes; the air inlet surface is arranged opposite to the air exhaust surface; the air return surface is arranged opposite to the air supply surface; an air inlet duct is arranged in the shell; the air inlet duct is used to guide the outdoor air to the air inlet surface. In this way, the angle between the heat exchanger and the indoor return air direction is less than 90 degrees, which can ensure the cooling capacity of the heat exchanger in the case of limited space, and use natural cooling to enable the machine room to operate smoothly.

[0006] Optionally, the air inlet duct includes a first air inlet duct and a second air inlet duct; the first air inlet duct and the second air inlet duct are located on different sides of the housing. In this way, a larger amount of outdoor fresh air can be obtained.

[0007] Optionally, the heat exchanger includes a first heat exchanger and a second heat exchanger; the first air inlet duct is used to guide outdoor air to the air inlet surface of the first heat exchanger; the second air inlet duct is used to guide outdoor air to the air inlet surface of the second heat exchanger. In this way, a larger outdoor fresh air volume can be obtained.

[0008] Optionally, a third air inlet duct is further provided in the housing, and the third air inlet duct is provided between the first heat exchanger and the second heat exchanger. In this way, a larger outdoor fresh air volume can be obtained.

[0009] Optionally, the heat exchanger is a spliced ​​structure consisting of the first heat exchanger and the second heat exchanger; the longitudinal cross-section of the spliced ​​structure includes a rhombus, or the transverse cross-section of the spliced ​​structure includes two rhombuses with connected vertices.

[0010] Optionally, the air handling unit further includes: an indoor fan and an outdoor fan; the indoor fan is arranged near the air outlet of the shell; the outdoor fan is arranged near the exhaust outlet on the top of the shell.

[0011] Optionally, the air handling unit further comprises: a filter assembly; the filter assembly is arranged on the air inlet surface and / or the air return surface. In this way, dust and the like can be reduced from entering the air handling unit, thereby extending its service life.

[0012] Optionally, the air outlet is arranged at the bottom of the shell, or the air outlet is arranged at the side of the shell.

[0013] Optionally, the air processing unit further includes an air valve, a temperature sensor and a controller; the controller is used to control the air valve according to the temperature obtained by the temperature sensor.

[0014] Optionally, the air valve includes a fresh air valve arranged at an outdoor air inlet, and / or a return air valve arranged at an indoor return air outlet.

[0015] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of an air handling unit provided in an embodiment of the present application;

[0017] Figure 2 A front view of an air handling unit provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of a top view of another air handling unit provided in an embodiment of the present application;

[0019] Figure 4 A left side view of an air handling unit provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of another air handling unit provided in an embodiment of the present application;

[0021] Figure 6 A schematic structural diagram of a transverse cross section of another air handling unit provided in an embodiment of the present application;

[0022] Figure 7 for Figure 6 A front view of another air handling unit shown;

[0023] Figure 8 A schematic diagram of the structure of another air handling unit provided in an embodiment of the present application;

[0024] Fig. 9 for Figure 8 Left side view of the air handling unit shown. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0026] In the embodiments of the present application, "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more.

[0027] At present, in the construction of computer rooms and the renovation of old computer rooms, high requirements are placed on the depth and height of the units. Therefore, how to utilize natural cooling in a limited space and ensure the cooling capacity of the computer room has become an urgent problem to be solved.

[0028] In view of this, an embodiment of the present application provides an air handling unit, which includes: a shell and a heat exchanger, and the angle between the heat exchanger and the indoor return air direction is less than 90 degrees; in this way, the heat exchanger is placed at an angle, and a certain cooling capacity can still be guaranteed when space is limited.

[0029] The embodiments of the present application are described below with reference to the accompanying drawings.

[0030] like Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of an air handling unit in an exemplary embodiment provided by the present application; Figure 1The air handling unit shown includes a shell 10 and a heat exchanger 20; the angle between the heat exchanger 20 and the indoor return air direction is less than 90 degrees; the heat exchanger 20 includes an air inlet surface 211, an air outlet surface 212, a return air surface 213 and an air supply surface 214; the air inlet surface 211 is the contact surface between the outdoor air inlet and the heat exchanger; the air outlet surface 212 is the side of the heat exchanger through which the outdoor exhaust air passes; the return air surface 213 is the contact surface between the indoor return air and the heat exchanger; the air supply surface 214 is the side of the heat exchanger through which the indoor supply air passes; the air inlet surface 211 is arranged opposite to the air outlet surface 212; the return air surface 213 is arranged opposite to the air supply surface 214; an air inlet duct is arranged in the shell 10; the air inlet duct is used to guide the outdoor air to the air inlet surface 211.

[0031] On the one hand, the angle between the heat exchanger and the indoor return air direction of the air handling unit is less than 90 degrees, so even in the case of limited space, the diamond-shaped heat exchanger can maximize the cooling capacity of the air handling unit. On the other hand, the air handling unit can be installed indoors without spraying water and used with the original computer room air conditioner. When the outdoor temperature is relatively low, natural cooling can be fully utilized to meet the computer room load; when the outdoor temperature rises and natural cooling cannot meet the computer room heat load, supplementary cooling is provided by the computer room air conditioner; when the outdoor temperature rises further and natural cooling cannot be used at all, the air handling unit is turned off and the computer room air conditioner is used alone for cooling. Without replacing the original air conditioning equipment in the computer room, it can be used in conjunction with the computer room air conditioner to effectively use natural cooling to reduce the overall energy consumption of the computer room and improve the energy utilization efficiency of the computer room.

[0032] In a possible embodiment, a plurality of first air ducts are arranged between the air inlet surface 211 and the air outlet surface 212 of the heat exchanger 20; a plurality of second air ducts are arranged between the air return surface 213 and the air supply surface 214; wherein the first air ducts cross-contact the second air ducts to realize heat exchange between outdoor fresh air in the first air ducts and indoor return air in the second air ducts.

[0033] In an optional embodiment, the air handling unit further comprises a water baffle, which can be arranged on the air supply surface 214 to prevent condensed water from being taken out of the air handling unit. The condensed water is generated when the outdoor fresh air and the indoor return air perform cold and heat exchange.

[0034] In an optional embodiment, if Figure 3 As shown in the top view structural diagram of the air handling unit, the air inlet duct includes a first air inlet duct 101 and a second air inlet duct 102 ; the first air inlet duct 101 and the second air inlet duct 102 are located on different sides of the shell 10 .

[0035] In an optional embodiment, if Figure 2As shown in the front view of the air handling unit, the heat exchanger 20 includes a first heat exchanger 201 and a second heat exchanger 202; the first air inlet 101 is used to guide the outdoor air to the air inlet surface 211 of the first heat exchanger 201; the second air inlet 102 is used to guide the outdoor air to the air inlet surface 211 of the second heat exchanger 202. It can be understood that the heat exchanger 20 in the embodiment of the present application can be an air-to-air heat exchanger.

[0036] In this way, Figure 4 As shown in the direction of the arrow in the left view of the air handling unit, outdoor fresh air can enter the heat exchanger 20 from the first air inlet 101 and the second air inlet 102 on both sides through the outdoor filter 204 and the air inlet surface 211 of the heat exchanger 20, and the indoor return air enters the heat exchanger 20 from the top through the indoor filter 203 and the return air surface 213 of the heat exchanger 20. The return air entering the heat exchanger 20 exchanges heat with the fresh air entering the heat exchanger 20 and passes through the supply air surface 211 of the heat exchanger 20. The return air after heat exchange passes through the indoor fan 30 and is sent into the machine room from the air supply port at the bottom of the shell 10. The fresh air after heat exchange is discharged from the heat exchanger 20 through the exhaust surface 212 of the heat exchanger 20, and is discharged from the air handling unit from the exhaust port at the top of the shell 10 via the outdoor fan 40.

[0037] In another possible embodiment, Figure 5 The structural diagram of the air handling unit shown in the figure shows that a third air inlet duct 103 is further arranged in the housing 10 of the air handling unit; the third air inlet duct 103 is arranged between the first heat exchanger 201 and the second heat exchanger 202. The gap between the two heat exchangers is opened, not only the original fresh air inlet ducts on both sides are retained, but also a fresh air inlet duct in the middle is added, which increases the fresh air inlet volume, reduces the air inlet velocity, and makes the heat exchange of the heat exchanger more uniform.

[0038] It can be understood that the heat exchanger 20 in the above embodiment is a spliced ​​structure composed of the first heat exchanger 201 and the second heat exchanger 202; the longitudinal cross-section of the spliced ​​structure includes a rhombus. Figure 2 The heat exchanger 20 shown may be a spliced ​​structure consisting of a first heat exchanger 201 and a second heat exchanger 202. Figures 1 to 5 The longitudinal cross section of the heat exchanger 20 shown is as follows Figure 4 The diamond shape shown.

[0039] In another possible embodiment, the transverse cross section of the heat exchanger 20 of the air handling unit includes two rhombuses with their vertices connected. Figure 6 The heat exchanger 20 of the air handling unit shown in the figure may be a spliced ​​structure consisting of a first heat exchanger 201 and a second heat exchanger 202. Figure 6The left side view of the heat exchanger 20 with a spliced ​​structure shown includes two rhombuses with their vertices connected. Figure 6 The direction of the middle arrow indicates the direction of air flow. The return air enters the housing 10 through the return air port at the top of the housing 10, and undergoes heat exchange through the return air surface 213. The cold air after heat exchange is sent to the machine room through the air supply surface 214 and the indoor fan at the bottom of the housing 10. The triangular area at the top of the two diamond-shaped air-to-air heat exchangers in the air handling unit is the air inlet channel for outdoor fresh air. The outdoor fresh air enters the air inlet surfaces 211 of the two air-to-air heat exchangers through the fresh air channel, and undergoes heat exchange in the air-to-air heat exchangers. The hot air after heat exchange passes through the exhaust surface 212 and the exhaust channels on both sides of the bottom of the housing 10 to be sent to the outside, so as to make full use of the natural cold source and reduce the energy consumption of the data center.

[0040] like Figure 7 The diagram shows the structure of the heat exchanger in the front view of the air handling unit in this embodiment, in which the return air surface 213 and the exhaust air surface 212 of the heat exchanger 20 can be seen. The arrow direction indicates the air flow direction, the upper left side indicates the indoor return air, and the lower left side indicates the indoor supply air. The upper right side indicates the outdoor intake air, and the lower right side indicates the outdoor exhaust air.

[0041] like Figures 1 to 7 In any exemplary embodiment shown, the air handling unit further includes: an indoor fan 30 and an outdoor fan 40; the indoor fan 30 can be arranged near the air outlet of the housing 10; the outdoor fan 40 can be arranged near the air outlet on the top of the housing 10. In the embodiment of the present application, the air outlet and the air outlet can also be arranged at other positions as required, and the embodiment of the present application is not limited to this.

[0042] In an optional embodiment, the air handling unit further comprises: a filter assembly; the filter assembly is arranged on the air inlet surface 211 and / or the air return surface 213 of the heat exchanger. The filter assembly may include an indoor filter and an outdoor filter. Figure 4 In the illustrated exemplary embodiment, the indoor filter 203 is disposed on the return air surface 213 of the heat exchanger 20 , and the outdoor filter 204 is disposed on the inlet air surface 211 of the heat exchanger 20 .

[0043] In an optional embodiment, the air outlet of the air handling unit is arranged at the bottom of the housing 10, or the air outlet is arranged at the side of the housing 10. Alternatively, the air outlet can be arranged at other sides according to actual needs on site, which is not limited in the embodiment of the present application.

[0044] In an optional embodiment, the air handling unit further includes an air valve, a temperature sensor and a controller; the controller is used to control the air valve according to the temperature obtained by the temperature sensor. In practical applications, a fresh air valve and a return air valve are installed at the outdoor air inlet and the indoor return air outlet, and the controller is used to control the actuator to adjust the air valve according to the temperature obtained by the temperature sensor, so as to meet different cooling requirements.

[0045] In an optional embodiment, the air valve includes a fresh air valve arranged at an outdoor air inlet, and / or a return air valve arranged at an indoor return air outlet.

[0046] When the outdoor temperature is lower than the first threshold, the fresh air valve and the return air valve are opened to utilize natural cooling to meet the load of the computer room.

[0047] When the outdoor temperature is greater than or equal to the first threshold, the air handling unit cannot meet the heat load of the computer room by using natural cooling, and supplementary cooling can be provided by the computer room air conditioner.

[0048] When the outdoor temperature is greater than the second threshold, the air handling unit cannot utilize natural cooling, and the air handling unit is turned off, and the computer room air conditioner is used alone for cooling.

[0049] It is understandable that, when the angle between the heat exchanger in the air handling unit and the indoor return air direction is 90 degrees, the air handling unit can be as follows: Figure 8 In the structure shown, the heat exchanger 901 in the air handling unit can be an air-to-air heat exchanger. A return air channel 902 is provided on the top of the air handling unit. The return air channel 902 enters the unit through the return air port on the top of the unit and exchanges heat through the air-to-air heat exchanger. The air-to-air heat exchanger is 90 degrees from the indoor return air direction. The cold air after heat exchange is sent into the machine room through the horizontal air supply channel at the bottom of the unit. The outdoor fan and the outdoor air inlet channel are roughly located on the same horizontal line. The outdoor fresh air exchanges heat through the air-to-air heat exchanger. The hot air after heat exchange is directly sent out horizontally by the outdoor fan 903, and the hot air is sent out to the outside through the air duct, so as to make full use of the natural cold source and reduce the energy consumption of the data center. In a possible embodiment, the air handling unit also includes a filter assembly 904, and the filter assembly 904 is arranged on the air inlet surface and / or the return air surface of the heat exchanger. Figure 8 The direction of the arrow is the direction of air flow. Fig. 9 for Figure 8 Left side view of the air handling unit shown. Fig. 9 The air handling unit shown includes a return air duct 902 at the top, an outdoor fan 903 in the middle, and an indoor fan 905 at the bottom.

[0050] The embodiment of the present application takes into account the large-granularity modular design of the product during design, fully considers the on-site requirements for unit size, and meets the requirements for rapid on-site deployment.

[0051] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air handling unit, characterized in that: include: A housing (10) and a heat exchanger (20); The angle between the heat exchanger (20) and the indoor return air direction is less than 90 degrees; The heat exchanger (20) comprises an air inlet surface (211), an air outlet surface (212), an air return surface (213) and an air supply surface (214); the air inlet surface (211) is a contact surface between outdoor air inlet and the heat exchanger; the air outlet surface (212) is a side surface of the heat exchanger through which outdoor air outlet passes; the air return surface (213) is a contact surface between indoor air outlet and the heat exchanger; and the air supply surface (214) is a side surface of the heat exchanger through which indoor air outlet passes; The air inlet surface (211) and the air outlet surface (212) are arranged opposite to each other; the air return surface (213) and the air supply surface (214) are arranged opposite to each other; An air inlet duct is provided in the housing (10); the air inlet duct is used to guide outdoor wind toward the air inlet surface (211).

2. The air handling unit according to claim 1, characterized in that: The air inlet duct comprises a first air inlet duct (101) and a second air inlet duct (102); the first air inlet duct (101) and the second air inlet duct (102) are located on different sides of the housing (10).

3. The air handling unit according to claim 2, characterized in that: The heat exchanger (20) comprises a first heat exchanger (201) and a second heat exchanger (202); the first air inlet duct is used to guide outdoor wind to the air inlet surface (211) of the first heat exchanger (201); and the second air inlet duct is used to guide outdoor wind to the air inlet surface (211) of the second heat exchanger (202).

4. The air handling unit according to claim 3, characterized in that: A third air inlet duct is also provided in the shell (10); the third air inlet duct is provided between the first heat exchanger (201) and the second heat exchanger (202).

5. The air handling unit according to claim 3, characterized in that: The heat exchanger (20) is a spliced ​​structure consisting of the first heat exchanger (201) and the second heat exchanger (202); the longitudinal cross-section of the spliced ​​structure includes a rhombus, or the transverse cross-section of the spliced ​​structure includes two rhombuses with their vertices connected.

6. The air handling unit according to any one of claims 1 to 5, characterized in that: Also includes: An indoor fan (30) and an outdoor fan (40); the indoor fan (30) is arranged adjacent to the air outlet of the shell (10); and the outdoor fan (40) is arranged adjacent to the air outlet at the top of the shell (10).

7. The air handling unit according to claim 6, characterized in that: Also includes: Filter assembly; the filter assembly is arranged on the air inlet surface (211) and / or the air return surface (213).

8. The air handling unit according to claim 7, characterized in that: The air outlet is arranged at the bottom of the shell (10), or the air outlet is arranged at the side of the shell (10).

9. The air handling unit according to claim 8, characterized in that: It also includes an air valve, a temperature sensor and a controller; the controller is used to control the air valve according to the temperature obtained by the temperature sensor.

10. The air handling unit according to claim 9, characterized in that: The air valve includes a fresh air valve arranged at an outdoor air inlet and / or a return air valve arranged at an indoor return air outlet.

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