Heat exchanger

Abstract

The invention discloses a heat exchanger, and relates to the technical field of breeding heating, the heat exchanger comprises a casing, a heat exchange mechanism, a fan and a flow guide mechanism, one end of the casing is provided with an air inlet cylinder, the middle part is provided with the fan, the other end is provided with an air outlet, the air inlet cylinder is internally provided with the heat exchange mechanism, the air outlet is connected with the flow guide mechanism, and the heat exchange mechanism is communicated with an external heat source. The device can be installed on the top of the livestock and poultry house, hot air sucked into the top of the house through the air inlet barrel flows through the heat exchange module for heat exchange, the hot air obtained after heat exchange can reach 50 DEG C or above, the hot air is evenly guided through the flow guide mechanism and then is fused with cold air in the house again, and the temperature is about 23 DEG C when the hot air settles to a livestock and poultry breathing area; the requirements of livestock and poultry on comfortable areas are met.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture heating, and in particular to a heat exchanger. Background Art

[0002] In intensive livestock and poultry farming, the climate environment is one of the most difficult points to control. When facing farming in cold regions, the main heating measures usually adopted and their advantages and disadvantages are as follows: heating in the house with a gas furnace, the disadvantage is that it burns oxygen, which can easily cause animals to lack of oxygen and is not conducive to growth; adding heating equipment at the air inlet windows in the house, mixing the air when it enters through the air inlet windows to achieve the purpose of increasing the temperature in the house, but this method is prone to condensation, and the temperature in the house is uneven when the initial breathing volume of the farmed animals is small (small air intake); energy-saving exchangers, using exhaust gas and feces for cross-preheating of air, can save resources, but cannot fully reach the temperature required for farmed animals; planning floor heating in the early stages of infrastructure construction, this method is feasible, but the investment and operating costs are high.

[0003] The existing gas furnace equipment can easily cause animals to lack oxygen, and it is unsafe because of open flames; the heating fins (tubes) and energy-saving exchangers cannot fully meet the temperature and humidity requirements of animals, and other investment costs are too high. Therefore, a heating equipment with uniform heating and low cost is urgently needed to solve the current technical problems. Summary of the invention

[0004] The object of the present invention is to provide a heat exchanger to solve the problems existing in the above-mentioned prior art and to provide uniform heating for livestock and poultry houses with low cost.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a heat exchanger, comprising a casing, a heat exchange mechanism, a fan and a flow guide mechanism, wherein an air inlet is arranged at one end of the casing, the fan is arranged in the middle, and an air outlet is arranged at the other end, the heat exchange mechanism is arranged in the air inlet, the flow guide mechanism is connected to the air outlet, and the heat exchange mechanism is connected to an external heat source.

[0007] Preferably, the diameter of the air inlet cylinder is greater than the diameter of the air outlet.

[0008] Preferably, the heat exchange mechanism includes heat exchange tubes and fins, a plurality of the heat exchange tubes are evenly penetrated through the air inlet cylinder, fins are evenly distributed on the heat exchange tubes, the fins are all located in the air inlet cylinder, and the heat exchange tubes are all connected to the heat source.

[0009] Preferably, the fan comprises a motor and fan blades, the motor is connected to the inside of the casing via a support frame, and the fan blades are connected to the rotating shaft of the motor.

[0010] Preferably, the flow guide mechanism comprises a flow guide shell and a flow guide surface, the flow guide surface is arranged on the upper surface of the flow guide shell, and the flow guide surface is a mountain-shaped surface or a conical surface, so that the flow channel between the flow guide shell and the flow guide surface faces all around.

[0011] Preferably, the guide shell is hung on the side wall of the casing through a cable chain, and the guide shell is located below the air outlet.

[0012] Preferably, the air inlet tube is provided with a hanging ear, and the hanging ear is used for hanging by a rope.

[0013] Preferably, the air inlet tube is square and a side wall mounting frame is connected to one side wall.

[0014] Preferably, the air guide mechanism comprises an air collector and guide vanes, the guide vanes are arranged in the air collector, and the air collector is arranged on the air outlet.

[0015] Preferably, the air inlet tube, the fan, and the air outlet are coaxially arranged.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention can be installed on the top of a livestock and poultry house. The hot air on the top of the house is sucked in through the air inlet duct and flows through the heat exchange module for heat exchange. The hot air after heat exchange can reach above 50°C. After being evenly guided by the guide mechanism, it merges with the cold air in the house again and settles to the breathing area of ​​livestock and poultry at a temperature of about 23°C, which meets the requirements of livestock and poultry for a comfort zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 Schematic diagram of heat exchange principle of a heat exchanger in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a first structure of a heat exchanger in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the internal structure of a heat exchanger in an embodiment of the present invention;

[0022] Figure 4 A second structural schematic diagram of a heat exchanger in an embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the installation structure of the heat exchange tube in an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of a heat exchange mechanism in an embodiment of the present invention;

[0025] In the figure: 1-livestock house, 2-heat exchanger, 3-air inlet duct, 4-side wall mounting frame, 5-casing, 6-guide surface, 7-chain, 8-guide shell, 9-hinges, 10-quick lock, 11-motor, 12-fan blades, 13-wind duct, 14-guide vanes, 15-heat exchange tube, 16-fins. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The object of the present invention is to provide a heat exchanger to solve the problems existing in the prior art and to provide uniform heating to livestock and poultry houses at a low cost.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Embodiment 1

[0030] like Figures 1 to 6 As shown, a heat exchanger 2 is provided in this embodiment, including a casing 5, a heat exchange mechanism, a fan and a flow guide mechanism. An air inlet 3 is provided at one end of the casing 5, a fan is provided in the middle, and an air outlet is provided at the other end. A heat exchange mechanism is provided in the air inlet 3, and a flow guide mechanism is connected to the air outlet. The heat exchange mechanism is connected to an external heat source.

[0031] As an optional solution, in this embodiment, the diameter of the air inlet 3 is larger than the diameter of the air outlet. In this embodiment, the connection between the housing 5 and the air inlet 3 is achieved by a hinge 9 and a quick lock 10, which is convenient for cleaning and maintenance; the housing 5 is rotomolded with LLDPE material, which is corrosion-resistant and aging-resistant.

[0032] As an optional solution, the heat exchange mechanism in this embodiment includes heat exchange tubes 15 and fins 16. Several heat exchange tubes 15 are evenly penetrated on the air inlet tube 3. Fins 16 are evenly distributed on the heat exchange tubes 15. The fins 16 are all located in the air inlet tube 3, and the heat exchange tubes 15 are all connected to the heat source.

[0033] As an optional solution, in this embodiment, the fan includes a motor 11 and fan blades 12 . The motor 11 is connected to the inside of the casing 5 via a support frame, and the fan blades 12 are connected to the rotating shaft of the motor 11 .

[0034] As an optional solution, the first type of flow guide mechanism in this embodiment includes a flow guide shell 8 and a flow guide surface 6. The upper surface of the flow guide shell 8 is provided with the flow guide surface 6, and the flow guide surface 6 is a mountain-shaped surface or a conical surface, so that the flow channel between the flow guide shell 8 and the flow guide surface 6 faces all around.

[0035] As an optional solution, in this embodiment, the guide shell 8 is hung on the side wall of the housing 5 through the cable chain 7, and the guide shell 8 is located below the air outlet. The guide shell 8 and the housing 5 are connected by the cable chain 7 and the S-shaped hook. The cold air flows into the housing through the heat exchange module, and after heating, the fan blades 12 rotate and then pass through the guide module to convert the wind into a horizontal direction. The guide mechanism can divert the wind volume, expand the wind coverage, and increase the air supply distance.

[0036] As an optional solution, in this embodiment, a hanging ear is provided on the air inlet tube 3, and the hanging ear is used for hanging by a rope.

[0037] As an optional solution, in this embodiment, the air inlet duct 3 is square and a side wall mounting frame 4 is connected to one side wall to facilitate connection and fixation with the wall.

[0038] As an optional solution, the second air guide mechanism in this embodiment includes an air collector 13 and a guide vane 14. The guide vane 14 is fixedly arranged in the air collector 13, and the air collector 13 is arranged on the air outlet. In this embodiment, the guide vane 14 is not rotatable, and its function is to increase the air volume and air supply distance.

[0039] As an optional solution, in this embodiment, the air inlet 3, the fan, and the air outlet are coaxially arranged.

[0040] In this embodiment, it is installed on the top of the livestock and poultry house 1. The temperature and speed of the hot air flowing out of the heat exchanger 2 are uniform, ensuring that the temperature of the fresh air reaching the animal's breathing area is appropriate, without dead corners or stress reactions, and effectively avoiding condensation of gas in the mixed area.

[0041] Embodiment 2

[0042] The heat exchange and working principle of the heat exchanger 2 in this embodiment are as follows:

[0043] Take the pig house as an example: the temperature in the pig house has a layered characteristic. The temperature at the top of the house is as high as 32°C, while the area with shorter side walls is only 9-10°C. Therefore, the hot air sucked from the top of the house by the hot air blower 2 flows through the heat exchange module to form convection heat exchange. The hot air after heat exchange reaches above 50°C, and after flowing out, it merges with the cold air in the house again. The temperature when it settles to the pig's breathing area is 23°C, which meets the pig's requirements for a comfortable zone.

[0044] Specifically, the heat in the external heat source (90°C hot water) connected through the heat exchange pipe 15 is fully mixed with the gas (32°C) at the air inlet end of the fan, and then the hot air (about 58°C) is discharged at a high speed of 6.2m / s through the fan guide plate; the cold and hot air are mixed by the rotation of the fan blades. Based on cost considerations, a minimum number of fans are installed in a pig house under the premise of meeting the breathing volume of the pigs, and each fan needs to have sufficient rotation speed and wind speed. This embodiment uses the heat exchange module with high thermal conductivity of the heat exchange fins 16 in the air inlet tube 3, and the fan is fully convective to dissipate heat, so a strong temperature field is formed to achieve efficient heat exchange effect; the mixed hot air at the air outlet flows out at a high speed and forms two heat exchanges with the indoor air: first, the hot air flowing out of the fan outlet (rising) and the cold air flowing into the air inlet window (descending) are convectively exchanged, and secondly, the gas after heat exchange is again fused with the rising hot air in the house during the sedimentation process to achieve the fused fresh air gas required for breeding, which can make the heat exchange more uniform.

[0045] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A heat exchanger, characterized in that: It includes a casing, a heat exchange mechanism, a fan and a flow guide mechanism. An air inlet is arranged at one end of the casing, the fan is arranged in the middle, and an air outlet is arranged at the other end. The heat exchange mechanism is arranged in the air inlet, the air outlet is connected to the flow guide mechanism, and the heat exchange mechanism is connected to an external heat source.

2. The heat exchanger according to claim 1, characterized in that: The diameter of the air inlet cylinder is greater than the diameter of the air outlet.

3. The heat exchanger according to claim 1, characterized in that: The heat exchange mechanism includes heat exchange tubes and fins. A plurality of heat exchange tubes are evenly passed through the air inlet cylinder. Fins are evenly distributed on the heat exchange tubes. The fins are all located in the air inlet cylinder. The heat exchange tubes are all connected to the heat source.

4. The heat exchanger according to claim 1, characterized in that: The fan comprises a motor and fan blades. The motor is connected to the inside of the casing via a support frame, and the fan blades are connected to the rotating shaft of the motor.

5. The heat exchanger according to claim 1, characterized in that: The flow guide mechanism comprises a flow guide shell and a flow guide surface. The flow guide surface is arranged on the upper surface of the flow guide shell. The flow guide surface is a mountain-shaped surface or a conical surface, so that the flow channel between the flow guide shell and the flow guide surface faces all around.

6. The heat exchanger according to claim 5, characterized in that: The guide shell is hung on the side wall of the casing through a cable chain, and the guide shell is located below the air outlet.

7. The heat exchanger according to claim 1, characterized in that: The air inlet tube is provided with a hanging ear, and the hanging ear is used for hanging by a rope.

8. The heat exchanger according to claim 1, characterized in that: The air inlet tube is square and a side wall mounting frame is connected to one side wall.

9. The heat exchanger according to claim 8, characterized in that: The air guide mechanism comprises an air collector and guide vanes. The guide vanes are arranged in the air collector, and the air collector is arranged on the air outlet.

10. The heat exchanger according to claim 1, characterized in that: The air inlet tube, the fan, and the air outlet are arranged coaxially.

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