Alternating negative pressure high temperature material cooling device

Abstract

The utility model relates to heat treatment equipment technical field, concretely is a kind of alternating negative pressure high temperature material cooling equipment, through setting cooling chamber, negative pressure fan, exhaust air duct and heat exchanger produce circulation airflow, high temperature material on breathable tray is cooled, and the power of airflow circulation that alternating negative pressure and normal pressure formed at the air inlet of negative pressure fan, improve the cooling efficiency to material.The spiral cooling coil pipe set in the cooling chamber inner wall makes the cooling chamber keep constant cooling effect, in the process of air flow, the heat of high temperature material is continuously taken away, the air of heat removal flows upwards, the water vapor in air flows upwards and contacts spiral cooling coil pipe, water vapor liquefies into fine droplet when cold, droplet is collected to liquid trap under gravity, and the cooling liquid of liquid trap is collected to liquid collecting groove, effectively reduce the humidity in cooling chamber.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment, specifically to an alternating negative pressure high-temperature material cooling device. Background Technology

[0002] The improved substrate used for mushroom cultivation is essentially cellulose-free, consisting of a large amount of grains and micronutrient additives. The grains are partially sterilized by boiling to kill bacteria, cooled to induce the germination of heat-resistant spores, and then steam-sterilized before the germinating spores mature enough to produce new spores. This substrate can be used for fungal growth, including mushrooms, especially shiitake mushrooms. After high-temperature sterilization, the substrate needs to be cooled in a cooling chamber. Currently, the cooling process generally uses axial flow fans to exhaust the hot air inside the cooling chamber, creating negative pressure and allowing a large amount of fresh air from outside to enter. This results in slow cooling, low cooling efficiency, and high humidity within the cooling chamber. Utility Model Content

[0003] The purpose of this invention is to provide an alternating negative pressure high-temperature material cooling device to overcome the problems existing in the current equipment.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an alternating negative pressure high-temperature material cooling device, comprising a cooling chamber, a negative pressure fan, an exhaust duct, a heat exchanger, and a ventilated tray. The cooling chamber is used to cool high-temperature materials, and a spiral cooling coil is installed on the inner wall of the cooling chamber. The ventilated tray is installed in the cooling chamber for placing high-temperature materials. The top of the cooling chamber is connected to the air inlet of the negative pressure fan, and the bottom of the cooling chamber is connected to a purification chamber through a liquid collection hopper. The air outlet of the negative pressure fan is connected to one end of the exhaust duct, and the other end of the exhaust duct is connected to the purification chamber. The heat exchanger is installed inside the exhaust duct.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] As a further improvement to the above technical solution, the negative pressure fan is electrically connected to the controller, which is a PLC controller. The controller controls the negative pressure fan to alternately generate negative pressure and normal pressure at the air inlet. There are two or more negative pressure fans.

[0007] As a further improvement to the above technical solution, the air outlet of the negative pressure fan includes a first air outlet and a second air outlet, and the exhaust duct includes a first exhaust duct and a second exhaust duct; the first air outlet of the negative pressure fan is connected to one end of the first exhaust duct, and the other end of the first exhaust duct is connected to the clean room; the second air outlet of the negative pressure fan is connected to one end of the second exhaust duct, and the other end of the second exhaust duct is connected to the clean room; a heat exchanger is installed in both the first exhaust duct and the second exhaust duct.

[0008] As a further improvement to the above technical solution, the side of the purification chamber is provided with an air inlet, which is connected to the other end of the first exhaust duct and the second exhaust duct; the purification chamber is provided with a HEPA filter and an activated carbon filter.

[0009] As a further improvement to the above technical solution, a liquid collection tank is provided at the bottom of the purification chamber, and a drain valve is provided at the bottom of the liquid collection tank.

[0010] As a further improvement to the above technical solution, the ventilation tray is provided in two or more, and each ventilation tray is provided with a hook on its outer edge. The inner walls of the cooling chamber are provided with tray hangers from top to bottom, and the inner side of the tray hanger is provided with a groove that cooperates with the hook. The hook of the ventilation tray is placed into the groove of the tray hanger, thereby placing the ventilation tray in the designated position in the cooling chamber.

[0011] As a further improvement to the above technical solution, the lower end of the spiral cooling coil is connected to the coolant inlet pipe, and the upper end of the spiral cooling coil is connected to the coolant outlet pipe.

[0012] The beneficial effects of this utility model are as follows: The alternating negative pressure high-temperature material cooling equipment provided by this utility model generates circulating airflow by setting up a cooling chamber, a negative pressure fan, an exhaust duct, and a heat exchanger to cool the high-temperature material on the ventilated tray. The alternating negative pressure and normal pressure at the air inlet of the negative pressure fan generate the power of airflow circulation, improving the cooling efficiency of the material. The spiral cooling coil set on the inner wall of the cooling chamber maintains a constant cooling effect in the cooling chamber. During the airflow process, the heat of the high-temperature material is continuously carried away. The air carrying away the heat flows upward, and the water vapor in the air comes into contact with the spiral cooling coil during the upward flow. The water vapor liquefies into fine droplets when it encounters the cold, and the droplets are collected into the liquid collection hopper under the action of gravity. The coolant in the liquid collection hopper is collected into the liquid collection tank, effectively reducing the humidity in the cooling chamber. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a top view schematic diagram of the alternating negative pressure high-temperature material cooling device provided in the preferred embodiment of this utility model;

[0015] Figure 2 It is along Figure 1 AA section view in the middle;

[0016] In the diagram: 1. Cooling chamber; 2. Negative pressure fan; 21. First air outlet; 22. Second air outlet; 23. Air inlet; 3. Heat exchanger; 41. First exhaust duct; 42. Second exhaust duct; 5. Spiral cooling coil; 51. Coolant inlet pipe; 52. Coolant outlet pipe; 6. Ventilation tray; 61. Hook; 62. Tray hanger; 7. Liquid collection hopper; 8. Purification chamber; 81. Liquid collection tank; 82. Drain valve; 83. Air inlet; 84. HEPA filter; 85. Activated carbon filter. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 , Figure 2As shown, a preferred embodiment of this utility model provides an alternating negative pressure high-temperature material cooling device, including a cooling chamber 1, a negative pressure fan 2, an exhaust duct, a heat exchanger 3, and a ventilated tray 6. The cooling chamber 1 is used to cool high-temperature materials, and a spiral cooling coil 5 is provided on the inner wall of the cooling chamber 1. The ventilated tray 6 is placed in the cooling chamber 1 and is used to place high-temperature materials. The top of the cooling chamber 1 is connected to the air inlet 23 of the negative pressure fan 2, and the bottom of the cooling chamber 1 is connected to a purification chamber 8 through a liquid collection hopper 7. The air outlet of the negative pressure fan 2 is connected to one end of the exhaust duct, and the other end of the exhaust duct is connected to the purification chamber 8. The heat exchanger 3 is located inside the exhaust duct.

[0021] Preferably, the negative pressure fan 2 is electrically connected to the controller, which can be a PLC controller. The controller controls the alternating generation of negative pressure and normal pressure at the air inlet 23 of the negative pressure fan 2. Two or more negative pressure fans 2 are configured, and the failure of one or a few negative pressure fans 2 will not affect the normal operation of the cooling equipment.

[0022] Preferably, the heat exchanger 3 is a prior art technology used to cool the airflow flowing through the exhaust duct; the heat exchanger 3 located in the exhaust duct cooperates with the ventilated tray 6 located in the cooling chamber 1 to improve the cooling speed of the airflow and the cooling efficiency of the material.

[0023] Preferably, the negative pressure fan 2 has an air outlet including a first air outlet 21 and a second air outlet 22, and the exhaust duct includes a first exhaust duct 41 and a second exhaust duct 42. The first air outlet 21 of the negative pressure fan 2 is connected to one end of the first exhaust duct 41, and the other end of the first exhaust duct 41 is connected to the cleanroom 8. The second air outlet 22 of the negative pressure fan 2 is connected to one end of the second exhaust duct 42, and the other end of the second exhaust duct 42 is connected to the cleanroom 8. Both the first exhaust duct 41 and the second exhaust duct 42 are equipped with heat exchangers 3. Specifically, the cleanroom 8 has an air inlet 83 on its side, which is connected to the other end of the first exhaust duct 41 and the second exhaust duct 42. Preferably, the cleanroom 8 has a liquid collection tank 81 at its bottom, and a drain valve 82 at the bottom of the liquid collection tank 81.

[0024] Preferably, the purification chamber 8 is equipped with a HEPA filter 84 and an activated carbon filter 85. Both the HEPA filter 84 and the activated carbon filter 85 are annular, with the activated carbon filter 85 located inside the HEPA filter 84. The HEPA filter 84 filters PM2.5 particles and some organic pollutants from the air, while the activated carbon filter 85 adsorbs toxic substances from the air and performs sterilization and deodorization. Under the suction of the negative pressure fan 2, air passes through the HEPA filter 84 and the activated carbon filter 85 in the purification chamber 8, effectively filtering dust and other impurities from the air and preventing contamination of high-temperature materials due to bacteria and dust brought in by the air. The filtered clean air then enters the cooling chamber 1 through the funnel opening of the liquid collection hopper 7.

[0025] Preferably, two or more breathable trays 6 are provided, each with multiple breathable holes. Each breathable tray 6 has a hook 61 on its outer edge. Tray hangers 62 are spaced apart from top to bottom on both sides of the inner wall of the cooling chamber 1. The inner side of each tray hanger 62 has a groove that mates with the hook 61. The hook 61 of the breathable tray 6 is placed into the groove of the tray hanger 62, thereby placing the breathable tray 6 in a designated position within the cooling chamber 1. In this embodiment, the breathable tray 6 is made of a composite material of polypropylene and glass fiber.

[0026] Preferably, a constant cooling effect is maintained in the cooling chamber 1 by setting a spiral cooling coil 5. The lower end of the spiral cooling coil 5 is connected to the coolant inlet pipe 51, and the upper end of the spiral cooling coil 5 is connected to the coolant outlet pipe 52. The coolant inlet pipe 51 is used to inject coolant, and the coolant outlet pipe 52 is used to discharge coolant.

[0027] The working principle of this invention is as follows: The high-temperature material is placed on the ventilated tray 6. Under the suction of the negative pressure fan 2, the alternating negative pressure and normal pressure at the air inlet 23 of the negative pressure fan 2 generate the power of airflow circulation, forming an upward airflow in the cooling chamber 1. The inner wall of the cooling chamber 1 is equipped with a spiral cooling coil 5, which maintains a constant cooling effect in the cooling chamber 1. During the upward flow of the airflow, the clean cold air comes into full contact with the high-temperature material on the ventilated tray 6, continuously carrying away the heat from the high-temperature material, thereby cooling the high-temperature material placed on the ventilated tray 6. The air carrying away heat flows upward, and the water vapor in the air comes into contact with the spiral cooling coil 5 during the upward flow. The water vapor liquefies into tiny droplets upon cooling, and the droplets are collected by gravity into the liquid collection hopper 7. The coolant in the liquid collection hopper 7 is collected into the liquid collection tank 81. Simultaneously, the airflow enters the air inlet 23 of the negative pressure fan 2 from the top, and then is divided into two equal parts through the first air outlet 21 and the second air outlet 22 of the negative pressure fan 2: one part of the airflow flows downward along the first exhaust duct 41, is cooled by the heat exchanger 3, and then enters the cooling chamber 1 to further cool the material; the other part of the airflow flows downward along the second exhaust duct 42, is cooled by the heat exchanger 3, and then enters the cooling chamber 1 to further cool the material. In this embodiment, the high-temperature material is a substrate sterilized by boiling. The substrate is used for fungal growth and includes grains and micronutrient additives. The initial temperature of the substrate is 105℃, and the substrate is cooled under alternating negative pressure and normal pressure modes of -0.02MPa.

[0028] The alternating negative pressure high-temperature material cooling device provided by this utility model generates circulating airflow by setting up a cooling chamber 1, a negative pressure fan 2, an exhaust duct, and a heat exchanger 3 to cool the high-temperature material on the ventilated tray 6. The alternating negative pressure and normal pressure at the air inlet 23 of the negative pressure fan 2 generate the power for airflow circulation, improving the cooling efficiency of the material. The spiral cooling coil 5 set on the inner wall of the cooling chamber 1 maintains a constant cooling effect in the cooling chamber 1. During the air flow, the heat of the high-temperature material is continuously carried away. The air carrying away the heat flows upward, and the water vapor in the air comes into contact with the spiral cooling coil 5 during the upward flow. The water vapor liquefies into fine droplets when it encounters the cold, and the droplets are collected by gravity into the liquid collection hopper 7. The coolant in the liquid collection hopper 7 is collected into the liquid collection tank 81, effectively reducing the humidity in the cooling chamber 1.

[0029] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0030] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An alternating negative pressure high-temperature material cooling device, characterized in that: The system includes a cooling chamber, a negative pressure fan, an exhaust duct, a heat exchanger, and a ventilated tray. The cooling chamber is used to cool high-temperature materials, and a spiral cooling coil is installed on the inner wall of the cooling chamber. The ventilated tray is located in the cooling chamber and is used to place high-temperature materials. The top of the cooling chamber is connected to the air inlet of the negative pressure fan, and the bottom of the cooling chamber is connected to the purification chamber through a liquid collection hopper. The air outlet of the negative pressure fan is connected to one end of the exhaust duct, and the other end of the exhaust duct is connected to the purification chamber. The heat exchanger is located inside the exhaust duct.

2. The alternating negative pressure high-temperature material cooling device according to claim 1, characterized in that: The negative pressure fan is electrically connected to the controller, which is a PLC controller. The controller controls the negative pressure fan to alternately generate negative pressure and normal pressure at the air inlet. There are two or more negative pressure fans.

3. The alternating negative pressure high-temperature material cooling device according to claim 1, characterized in that: The negative pressure fan has a first air outlet and a second air outlet, and the exhaust duct has a first exhaust duct and a second exhaust duct. The first air outlet of the negative pressure fan is connected to one end of the first exhaust duct, and the other end of the first exhaust duct is connected to the clean room. The second air outlet of the negative pressure fan is connected to one end of the second exhaust duct, and the other end of the second exhaust duct is connected to the clean room. Both the first and second exhaust ducts are equipped with heat exchangers.

4. The alternating negative pressure high-temperature material cooling device according to claim 3, characterized in that: The cleanroom has an air inlet on its side, which is connected to the other end of the first and second exhaust ducts; the cleanroom is equipped with a HEPA filter and an activated carbon filter.

5. The alternating negative pressure high-temperature material cooling device according to claim 4, characterized in that: The bottom of the purification chamber is equipped with a liquid collection tank, and the bottom of the liquid collection tank is equipped with a drain valve.

6. The alternating negative pressure high-temperature material cooling device according to claim 1, characterized in that: The ventilation tray is provided in two or more, and each ventilation tray has a hook on its outer edge. The inner walls of the cooling chamber are provided with tray hangers from top to bottom. The inner side of the tray hanger has a groove that cooperates with the hook. The hook of the ventilation tray is placed into the groove of the tray hanger, thereby placing the ventilation tray in the designated position in the cooling chamber.

7. The alternating negative pressure high-temperature material cooling device according to claim 1, characterized in that: The lower end of the spiral cooling coil is connected to the coolant inlet pipe, and the upper end of the spiral cooling coil is connected to the coolant outlet pipe.

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