Reverse circulation air duct

Abstract

The utility model relates to the technical field of heating ventilation air conditioners, in particular to a reverse circulation air duct which comprises a box body, and a heating mechanism, a cooling mechanism and an air guide mechanism are sequentially arranged in the box body from top to bottom. An air plate is arranged on the back of the box body, and an air return opening and an air outlet are formed in the upper end and the lower end of the air plate respectively. The box body, the fan, the return air inlet and the air outlet are used in a matched mode, when the device runs, the fan is started, the fan drives air in the box body to flow after being started, and due to the fact that the air outlet end of the fan is arranged downwards, external air enters from the return air inlet in the upper end of the box body, and dry air is sprayed out from the air outlet end of the fan and exhausted from the air outlet. Due to the fact that cold / hot air is generated from bottom to top, the temperature uniformity in the box body is better, the air guide mechanism is arranged on the lower portion, and installation and maintenance are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technology field, concretely is a reverse circulation air duct. BACKGROUND

[0002] In the traditional air duct system, such as early air conditioning air duct, mostly adopts the mode of upper air outlet and lower air return. With the continuous development of building environment and industrial demand, this traditional mode exposes some deficiencies in some aspects.

[0003] For example, in some large commercial buildings, the traditional air duct system is difficult to achieve uniform distribution of indoor temperature, the area close to the air outlet has lower or higher temperature, and the area far away from the air outlet is difficult to achieve ideal temperature effect. SUMMARY

[0004] The utility model discloses a reverse circulation air duct to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A reverse circulation air duct, comprising

[0007] Box, heating mechanism, cooling mechanism and air guide mechanism are sequentially arranged from top to bottom in the box;

[0008] The back of the box is provided with a wind plate, and the upper end and the lower end of the wind plate are respectively provided with an air return port and an air outlet.

[0009] Preferably, the heating mechanism comprises a bracket one horizontally arranged in the box, a mounting bracket one is arranged in the middle of the upper end face of the bracket one, and a plurality of electric heating pipes are arranged side by side in the mounting bracket one;

[0010] Preferably, the cooling mechanism comprises a bracket two horizontally arranged in the box and located below the bracket one, the upper end face of the bracket two is provided with a mounting bracket two, and the upper end face of the mounting bracket two is provided with an evaporator;

[0011] Preferably, the air guide mechanism comprises two groups of fans horizontally arranged in the box and located below the bracket two, the adjacent fans are symmetrically arranged, and the outlet end of the fan is arranged downward;

[0012] Preferably, a water pan is arranged between the adjacent fans and at the lower part thereof;

[0013] Preferably, the bottom end of the water pan is symmetrically provided with a drain pipe on both sides.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The reverse cycle air duct, by the cooperation of the box, the fan, the air return port and the air outlet, when the device runs, the fan is started, the fan drives the air flow in the box after starting, because the air outlet end of the fan is set downward, so the external air enters from the air return port at the upper end of the box, the dry air is sprayed from the air outlet end of the fan, and is discharged from the air outlet, because the cold / heat air is generated from bottom to top, the temperature uniformity in the box is better, and the air guide mechanism position is lower, the installation and maintenance are more convenient.

[0016] 2. The reverse cycle air duct, by the cooperation of the box, the electric heating pipe, the evaporator and the water pan, because the water pan of the reverse design discharges the humidification water drops and the frost condensation water in the air duct in advance, there is almost no water droplet in the air outlet, which can improve the reliability and safety of the precision electronic, chemical and pharmaceutical environment test. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the overall front view structural schematic diagram of the utility model;

[0018] Fig. 2 It is the overall internal structure schematic diagram of the utility model;

[0019] Fig. 3 It is the overall formal structure schematic diagram of the utility model.

[0020] In the drawing: 1, box; 2, bracket one; 3, mounting frame one; 4, electric heating pipe; 5, bracket two; 6, mounting frame two; 7, evaporator; 8, water pan; 9, fan; 10, drain pipe; 11, air return port; 12, air outlet. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] As Figs. 1-3 shown, a technical scheme provided by the utility model comprises:

[0023] A reverse cycle air duct, comprising a box 1, a heating mechanism, a cooling mechanism and a wind guide mechanism are sequentially arranged in the box 1 from top to bottom; a wind plate is arranged at the back of the box 1, and a return air inlet 11 and an air outlet 12 are arranged at the upper end and the lower end of the wind plate respectively. The heating mechanism comprises a bracket I 2 horizontally arranged in the box 1, a mounting bracket I 3 is arranged in the middle of the upper end surface of the bracket I 2, and a plurality of electric heating pipes 4 are arranged side by side in the inside of the mounting bracket I 3. The cooling mechanism comprises a bracket II 5 horizontally arranged in the box 1 and located below the bracket I 2, the upper end surface of the bracket II 5 is provided with a mounting bracket II 6, and the upper end surface of the mounting bracket II 6 is provided with an evaporator 7. The wind guide mechanism comprises two groups of fans 9 horizontally arranged in the box 1 and located below the bracket II 5, the adjacent fans 9 are symmetrically arranged, and the outlet end of the fan 9 is arranged downward. A water collecting tray 8 is arranged between the adjacent fans 9 and at the lower part thereof. Drainage pipes 10 are symmetrically arranged at the bottom end of the water collecting tray 8.

[0024] In this embodiment, when the device is running, the fan 9 is started, and the fan 9 drives the air flow in the box 1 after being started. Since the air outlet end of the fan 9 is arranged downward, the external air enters from the return air inlet 11 at the upper end of the box 1, the dry air is sprayed from the air outlet end of the fan 9, and is discharged from the air outlet 12. Because the cold / hot air is generated from bottom to top, the temperature uniformity in the box 1 is better, and the wind guide mechanism is located lower, so that the installation and maintenance are more convenient.

[0025] The external air enters from the return air inlet 11 at the upper end of the box 1, is subjected to heating treatment by the electric heating pipe 4, so that the water vapor in the air is evaporated. Since the air is reversely circulated, the water vapor also flows downward and is subjected to cooling treatment by the evaporator 7. The water in the air condenses and drops on the water collecting tray 8 below to be collected. Since the reversely designed water collecting tray 8 discharges the humid water drops and the frost condensation water in the air duct in advance, there is almost no water droplet at the air outlet 12, which can further improve the reliability and safety of the precision electronics, chemical and pharmaceutical environment test.

[0026] Working principle: when the device is running, the fan 9 is started, and the fan 9 drives the air flow in the box 1 after being started. Since the air outlet end of the fan 9 is arranged downward, the external air enters from the return air inlet 11 at the upper end of the box 1, is subjected to heating treatment by the electric heating pipe 4, so that the water vapor in the air is evaporated. Since the air is reversely circulated, the water vapor also flows downward and is subjected to cooling treatment by the evaporator 7. The water in the air condenses and drops on the water collecting tray 8 below to be collected. Since the reversely designed water collecting tray 8 discharges the humid water drops and the frost condensation water in the air duct in advance, there is almost no water droplet at the air outlet 12, which can further improve the reliability and safety of the precision electronics, chemical and pharmaceutical environment test.

[0027] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A reverse cycle air duct, characterised by: The utility model relates to a kind of heating and cooling cabinet, including Box (1), heating mechanism, cooling mechanism and air guide mechanism are sequentially arranged in the box (1) from top to bottom; Air baffle is arranged in the back of the box (1), and return air inlet (11) and air outlet (12) are respectively arranged in the upper end and the lower end of the air baffle; The heating mechanism includes bracket one (2) horizontally arranged in the box (1), mounting bracket one (3) is arranged in the upper end surface middle part of the bracket one (2), and several electric heating pipes (4) are arranged side by side in the inside of the mounting bracket one (3); The cooling mechanism includes bracket two (5) horizontally arranged in the box (1) and located below bracket one (2), mounting bracket two (6) is arranged in the upper end surface of the bracket two (5), and evaporator (7) is arranged in the upper end surface of the mounting bracket two (6); The air guide mechanism includes two groups of fans (9) horizontally arranged in the box (1) and located below bracket two (5), and the adjacent fans (9) are symmetrically arranged, and the outlet end of the fan (9) is arranged downward; Water pan (8) is arranged between the adjacent fans (9) and in the lower part thereof; Drain pipe (10) is symmetrically arranged in the bottom end of the water pan (8).

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