Heat recovery device of central air conditioning system

Abstract

The utility model belongs to the technical field of central air conditioners, and particularly relates to a heat recovery device of a central air conditioning system, which comprises a heat recovery box, a heat exchange mechanism, a transmission mechanism and a mixing mechanism, the heat exchange mechanism is arranged in the heat recovery box, the heat exchange mechanism comprises a heat exchange coil pipe, an air inlet hopper, an exhaust square pipe and a support, the heat exchange coil pipe is positioned in the heat recovery box, and the air inlet hopper is positioned in the heat recovery box. One end of the heat exchange coil pipe is connected with an air inlet hopper located outside the heat recovery box, the other end of the heat exchange coil pipe is connected with an exhaust square pipe located outside the heat recovery box, and a support is arranged in the air inlet hopper. The transmission mechanism is arranged on the bracket; when the waste heat gas circulates, heat is transferred to water, the water is heated, heat is recycled, when the waste heat gas circulates, the transmission mechanism is driven to work, the transmission mechanism drives the mixing mechanism to work, the water in the mixing mechanism is mixed and stirred, and the heat is evenly distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of central air conditioning, in particular to a heat recovery device for a central air conditioning system. Background Art

[0002] The central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. This system is different from traditional refrigerant air conditioners (such as single units, VRV) that centrally process air to achieve comfort requirements. The principle of liquid vaporization refrigeration is used to provide the required cooling capacity for the air conditioning system to offset the heat load of the indoor environment; the heating system provides the required heat for the air conditioning system to offset the cooling and heating loads of the indoor environment. When the central air conditioner is in cooling operation, a large amount of condensed waste heat gas is emitted to the outside through the condenser.

[0003] In order to recover and utilize the heat of waste heat gas, the present application proposes a heat recovery device for a central air-conditioning system. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the heat recovery device of the existing central air-conditioning system, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a heat recovery device for a central air-conditioning system. When the waste heat gas circulates, the heat is transferred to the water, and the water is heated to recover the heat. While the waste heat gas circulates, the transmission mechanism is driven to work, and the transmission mechanism drives the mixing mechanism to work, mix and stir the internal water to make the heat evenly distributed.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A heat recovery device for a central air conditioning system, comprising:

[0009] Heat recovery tank;

[0010] A heat exchange mechanism is arranged in the heat recovery box, and the heat exchange mechanism includes a heat exchange coil, an air intake hopper, an exhaust square pipe and a bracket. The heat exchange coil is located inside the heat recovery box, one end of the heat exchange coil is connected to the air intake hopper located outside the heat recovery box, and the other end of the heat exchange coil is connected to the exhaust square pipe located outside the heat recovery box. A bracket is arranged in the air intake hopper;

[0011] A transmission mechanism, arranged on the bracket;

[0012] The mixing mechanism is arranged in the heat recovery box, and the mixing mechanism is connected to the transmission mechanism.

[0013] As a preferred solution of a heat recovery device of a central air-conditioning system described in the utility model, the heat recovery box includes a box body, a water inlet pipe, a drain pipe and a sealing plug. The water inlet pipe is arranged on the top of the right side wall of the box body, and the drain pipe is arranged on the bottom of the right side wall of the box body. Sealing plugs are arranged on the outer ends of the water inlet pipe and the drain pipe.

[0014] As a preferred solution of a heat recovery device for a central air-conditioning system described in the utility model, the transmission mechanism includes a transmission shaft, an impeller, a driving bevel gear, a rotating shaft, a driven bevel gear and a driving gear, the transmission shaft is connected to the bracket, an impeller is arranged at one end of the transmission shaft, and a driving bevel gear is arranged at the other end of the transmission shaft, the rotating shaft is rotatably connected to the top of the box body, a driven bevel gear meshing with the driving bevel gear is arranged at the top of the rotating shaft, and a driving gear is arranged on the rotating shaft.

[0015] As a preferred solution of a heat recovery device for a central air-conditioning system described in the utility model, the mixing mechanism includes a stirring shaft, a driven gear and a stirring blade, the stirring shaft is rotatably connected to the box body, and a stirring blade meshing with the driving gear is arranged on the top of the stirring shaft.

[0016] As a preferred solution of the heat recovery device of a central air-conditioning system described in the utility model, a slot is provided on the side of the exhaust square pipe, and a filter plate is inserted into the slot.

[0017] As a preferred solution of the heat recovery device of a central air-conditioning system described in the utility model, a flange is provided at the outer end of the air inlet scoop.

[0018] As a preferred solution of the heat recovery device of a central air conditioning system described in the utility model, a rotary hole is opened at the right end of the air intake hopper, and the transmission shaft is connected to the rotary hole through a sealing gasket.

[0019] Compared with the prior art: the utility model adopts a box-type heat recovery structure, water is added inside the heat recovery box, and the waste heat gas enters the heat exchange coil through the air inlet hopper. When the waste heat gas circulates, the heat is transferred to the water, and the water is heated to recover the heat. While the waste heat gas circulates, it drives the transmission mechanism to work, and the transmission mechanism drives the mixing mechanism to work, mix and stir the internal water to make the heat evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 This is a schematic diagram of the shaft side structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the heat recovery box of the utility model;

[0023] Figure 3 This is a schematic diagram of the heat exchange mechanism structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the transmission mechanism structure of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the hybrid mechanism of the utility model.

[0026] In the figure: 100 heat recovery box, 110 box body, 120 water inlet pipe, 130 drain pipe, 140 sealing plug, 200 heat exchange mechanism, 210 heat exchange coil, 220 air inlet hopper, 230 exhaust square pipe, 240 bracket, 250 slot, 260 flange, 300 transmission mechanism, 310 transmission shaft, 320 impeller, 330 driving bevel gear, 340 rotating shaft, 350 driven bevel gear, 360 driving gear, 400 mixing mechanism, 410 stirring shaft, 420 driven gear, 430 stirring blade, 500 filter plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides a heat recovery device for a central air conditioning system. When the waste heat gas circulates, the heat is transferred to the water, and the water is heated to recover the heat. When the waste heat gas circulates, the transmission mechanism is driven to work, and the transmission mechanism drives the mixing mechanism to work, mixing and stirring the water inside to make the heat evenly distributed. Please refer to Figure 1-Figure 5 , including: a heat recovery box 100, a heat exchange mechanism 200, a transmission mechanism 300 and a mixing mechanism 400.

[0032] The heat recovery box 100 includes a box body 110, a water inlet pipe 120, a drain pipe 130 and a sealing plug 140. The water inlet pipe 120 is arranged at the top of the right side wall of the box body 110, and the drain pipe 130 is arranged at the bottom of the right side wall of the box body 110. The outer ends of the water inlet pipe 120 and the drain pipe 130 are both provided with sealing plugs 140.

[0033] Water is injected into the box body 110 through the water inlet pipe 120, and the water is discharged through the drain pipe 130. The water inlet pipe 120 and the drain pipe 130 are sealed with a sealing plug 140. The sealing plug 140 is a threaded plug to prevent the sealing plug 140 from being squeezed out by water pressure.

[0034] The heat exchange mechanism 200 is arranged in the heat recovery box 100, and the heat exchange mechanism 200 includes a heat exchange coil 210, an air inlet hopper 220, an exhaust square pipe 230 and a bracket 240. The heat exchange coil 210 is located inside the heat recovery box 100, one end of the heat exchange coil 210 is connected to the air inlet hopper 220 located outside the heat recovery box 100, and the other end of the heat exchange coil 210 is connected to the exhaust square pipe 230 located outside the heat recovery box 100, and the bracket 240 is arranged inside the air inlet hopper 220;

[0035] The waste heat gas is passed from the air inlet hopper 220 into the heat exchange coil 210 and then discharged from the exhaust square pipe 230. When the waste heat gas circulates, the heat is transferred to the water in the box 110 through the heat exchange coil 210 to recycle the heat.

[0036] The transmission mechanism 300 is arranged on the bracket 240. Specifically, the transmission mechanism 300 includes a transmission shaft 310, an impeller 320, a driving bevel gear 330, a rotating shaft 340, a driven bevel gear 350 and a driving gear 360. The transmission shaft 310 is connected to the bracket 240. The impeller 320 is arranged at one end of the transmission shaft 310, and the driving bevel gear 330 is arranged at the other end of the transmission shaft 310. The rotating shaft 340 is rotatably connected to the top of the housing 110. The driven bevel gear 350 meshing with the driving bevel gear 330 is arranged at the top of the rotating shaft 340, and the driving gear 360 is arranged on the rotating shaft 340.

[0037] When the waste heat gas circulates, the transmission shaft 310 is driven to rotate through the impeller 320, the transmission shaft 310 drives the driving bevel gear 330 to rotate, the driving bevel gear 330 drives the driven bevel gear 350 to rotate, and the driven bevel gear 350 drives the driving gear 360 to rotate through the rotating shaft 340 to realize power transmission. Since the air intake hopper 220 is funnel-shaped, it can reduce the airflow diameter and increase the airflow pressure, which is convenient for driving the impeller 320 to rotate.

[0038] The mixing mechanism 400 is disposed in the heat recovery box 100 and is connected to the transmission mechanism 300. Specifically, the mixing mechanism 400 includes a stirring shaft 410, a driven gear 420 and a stirring blade 430. The stirring shaft 410 is rotatably connected to the box body 110, and a stirring blade 430 meshing with the driving gear 360 is disposed on the top of the stirring shaft 410.

[0039] The driving gear 360 drives the driven gear 420 to rotate, and the driven gear 420 drives the stirring blade 430 to rotate through the stirring shaft 410 .

[0040] Since the waste heat gas is directly discharged after being cooled, it is easy to pollute the environment. Therefore, a slot 250 is opened on the side of the exhaust square pipe 230, and a filter plate 500 is inserted into the slot 250 to filter the discharged airflow.

[0041] In order to facilitate connection with the air supply pipeline, a flange 260 is provided at the outer end of the air inlet hopper 220 and is connected to the air supply pipeline via the flange 260 .

[0042] To avoid air leakage, a rotating hole is opened at the right end of the air inlet hopper 220, and the transmission shaft 310 is connected to the rotating hole through a sealing gasket to avoid air leakage at the gap at the connection position.

[0043] During specific use, water is injected into the housing 110 through the water inlet pipe 120, and the waste heat gas is passed into the heat exchange coil 210 from the air inlet hopper 220, and then discharged from the exhaust square pipe 230. When the waste heat gas circulates, the heat is transferred to the water in the housing 110 through the heat exchange coil 210, and the heat is recycled. When the waste heat gas circulates, the impeller 320 drives the transmission shaft 310 to rotate, the transmission shaft 310 drives the driving bevel gear 330 to rotate, the driving bevel gear 330 drives the driven bevel gear 350 to rotate, the driven bevel gear 350 drives the driving gear 360 to rotate through the rotating shaft 340, the driving gear 360 drives the driven gear 420 to rotate, the driven gear 420 drives the stirring blade 430 to rotate through the stirring shaft 410, the stirring blade 430 is used to mix the water in the housing 110 to make the heat evenly distributed, and the filter plate 500 is used to filter the discharged airflow. After use, the filter plate 500 can be pulled out and replaced.

[0044] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat recovery device for a central air conditioning system, characterized in that: include: Heat recovery tank (100); a heat exchange mechanism (200) arranged in the heat recovery box (100), the heat exchange mechanism (200) comprising a heat exchange coil (210), an air intake hopper (220), an exhaust square pipe (230) and a bracket (240); the heat exchange coil (210) is located inside the heat recovery box (100); one end of the heat exchange coil (210) is connected to the air intake hopper (220) located outside the heat recovery box (100); the other end of the heat exchange coil (210) is connected to the exhaust square pipe (230) located outside the heat recovery box (100); and the bracket (240) is arranged inside the air intake hopper (220); A transmission mechanism (300) is arranged on the support (240); A mixing mechanism (400) is arranged in the heat recovery box (100), and the mixing mechanism (400) is connected to the transmission mechanism (300).

2. A heat recovery device for a central air conditioning system according to claim 1, characterized in that: The heat recovery box (100) comprises a box body (110), a water inlet pipe (120), a drain pipe (130) and a sealing plug (140); the water inlet pipe (120) is arranged at the top of the right side wall of the box body (110); the drain pipe (130) is arranged at the bottom of the right side wall of the box body (110); and the sealing plugs (140) are arranged at the outer ends of the water inlet pipe (120) and the drain pipe (130).

3. A heat recovery device for a central air conditioning system according to claim 2, characterized in that: The transmission mechanism (300) comprises a transmission shaft (310), an impeller (320), a driving bevel gear (330), a rotating shaft (340), a driven bevel gear (350) and a driving gear (360); the transmission shaft (310) is connected to a bracket (240); an impeller (320) is arranged at one end of the transmission shaft (310); a driving bevel gear (330) is arranged at the other end of the transmission shaft (310); the rotating shaft (340) is rotatably connected to the top of the housing (110); a driven bevel gear (350) meshing with the driving bevel gear (330) is arranged at the top of the rotating shaft (340); and the driving gear (360) is arranged on the rotating shaft (340).

4. A heat recovery device for a central air conditioning system according to claim 3, characterized in that: The mixing mechanism (400) comprises a stirring shaft (410), a driven gear (420) and a stirring blade (430); the stirring shaft (410) is rotatably connected to the housing (110); and a stirring blade (430) meshing with the driving gear (360) is arranged at the top of the stirring shaft (410).

5. The heat recovery device of a central air conditioning system according to claim 1, characterized in that: A slot (250) is provided on the side of the exhaust square tube (230), and a filter plate (500) is inserted into the slot (250).

6. The heat recovery device of a central air conditioning system according to claim 1, characterized in that: The outer end of the air inlet scoop (220) is provided with a flange (260).

7. A heat recovery device for a central air conditioning system according to claim 3, characterized in that: A rotating hole is formed at the right end of the air intake hopper (220), and the transmission shaft (310) is connected to the rotating hole via a sealing gasket.

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