An industrial fresh air system

Abstract

The utility model discloses an industrial fresh air system, include: air duct subsystem, air duct subsystem includes air intake air pipe and sensible heat heat exchanger, air intake air pipe is provided with first air inlet and first air outlet, sensible heat heat exchanger sets up in the middle part of air intake air pipe, and sensible heat heat exchanger includes first heat exchange pipeline and second heat exchange pipeline, heat pump circulation subsystem, heat pump circulation subsystem is connected with air intake air pipe, and heat pump circulation subsystem includes evaporimeter and condenser, the air of outside through first air inlet and enter air intake air pipe, and this air carries out heat exchange through first heat exchange pipeline to realize first time cooling, and then this air utilizes evaporimeter and dehumidification again, and the air after completing cooling and dehumidification carries out heat exchange through second heat exchange pipeline to realize first time heating, and then this air utilizes condenser and heats up again and enters industrial processing area through first air outlet. The utility model can realize the low energy consumption dehumidification of fresh air.

Description

Technical Field

[0001] This utility model belongs to the field of fresh air system technology, specifically relating to an industrial fresh air system. Background Technology

[0002] During industrial processing, a large amount of high-temperature and high-humidity gas is generated, which causes the industrial processing area to also become high-temperature and high-humidity, thus failing to meet the requirements of industrial processing. In order to improve the environment of the industrial processing area, reduce the moisture content of the production circulating air, and improve production efficiency, it is necessary to exhaust the high-temperature and high-humidity gas and then replenish it with fresh air with lower temperature and lower humidity.

[0003] In related technologies, outdoor air is generally introduced directly into the industrial processing area as fresh air. The fresh air supplied in this way often has a high humidity content. When the supplied fresh air is mixed with the original production circulating air in the industrial processing area, it becomes production circulating mixed air, which in turn leads to a high overall humidity content in the production circulating mixed air, which does not meet the requirements of industrial processing. Utility Model Content

[0004] To overcome at least one of the defects of the prior art, this utility model provides an industrial fresh air system. Outside air undergoes heat exchange through the first heat exchange pipe of a sensible heat exchanger to achieve initial cooling. Then, the air is further cooled and dehumidified by an evaporator, resulting in low energy consumption. After cooling and dehumidification, the air undergoes heat exchange through the second heat exchange pipe of the sensible heat exchanger to achieve initial heating. This initial heating utilizes the energy converted from the initial cooling. Then, the air is further heated by a condenser, again resulting in low energy consumption. Therefore, this utility model can achieve low-energy dehumidification of fresh air, making it more energy-efficient and environmentally friendly.

[0005] The technical solution adopted by this utility model to solve its problem is: An industrial fresh air system includes: The air duct subsystem includes an air inlet duct and a sensible heat exchanger. The first end of the air inlet duct is provided with a first air inlet, and the second end of the air inlet duct is provided with a first air outlet. The sensible heat exchanger is located in the middle of the air inlet duct and includes a first heat exchange pipe and a second heat exchange pipe. The first heat exchange pipe and the second heat exchange pipe are close to each other and separated from each other. The heat pump cycle subsystem is connected to the air inlet duct and includes an evaporator and a condenser. Outside air enters the air intake duct through the first air inlet. The air undergoes heat exchange through the first heat exchange pipe to achieve initial cooling. Then, the air is cooled and dehumidified again by the evaporator. After cooling and dehumidification, the air undergoes heat exchange through the second heat exchange pipe to achieve initial heating. Then, the air is heated again by the condenser and enters the industrial processing area through the first air outlet.

[0006] As an optional implementation, the air inlet duct includes an air inlet section, a reversal section, and an air outlet section; The first air inlet is located at the first end of the air inlet section, the second end of the air inlet section is connected to the first end of the first heat exchange pipe, and the second end of the first heat exchange pipe is connected to the first end of the reversal section. The second end of the reversal section is connected to the first end of the second heat exchange pipe, the second end of the second heat exchange pipe is connected to the first end of the air outlet section, and the first air outlet is located at the second end of the air outlet section.

[0007] As an optional implementation, the air inlet duct includes an air inlet section, a reversal section, and an air outlet section, which are connected sequentially. The first heat exchange pipe is installed outside the air inlet section or the turnaround section, and the second heat exchange pipe is installed outside the turnaround section or the air outlet section.

[0008] As an alternative implementation, the evaporator is located in the reversal section, and the condenser is located in the air outlet section.

[0009] As an optional implementation, the industrial fresh air system also includes a control subsystem; The control subsystem includes a humidity sensor and a control module. The humidity sensor is electrically connected to the control module and is located within the turnaround section.

[0010] As an optional implementation, the control subsystem also includes a temperature sensor, which is electrically connected to the control module. Temperature sensors are installed in both the turnaround section and the air outlet section.

[0011] As an optional implementation, the heat pump cycle subsystem also includes a compressor and a throttling device, both of which are electrically connected to the control module; The compressor's discharge port is connected to the first end of the condenser via a refrigerant pipe. The second end of the condenser is connected to the first end of the evaporator via a refrigerant pipe and a throttling device. The second end of the evaporator is connected to the compressor's suction port via a refrigerant pipe.

[0012] As an optional implementation, the first heat exchange pipe extends along a first direction, and the second heat exchange pipe extends along a second direction; The first direction and the second direction are perpendicular to each other, or the first direction and the second direction are parallel to each other, or the first direction and the second direction form an angle α, where 0° < α < 90°.

[0013] As an optional implementation, the duct subsystem also includes a first fan, which is installed in the air outlet section.

[0014] As an optional implementation, the air duct subsystem also includes an outlet air duct and a second fan, with the second fan installed inside the outlet air duct; The first end of the air outlet duct has a second air inlet, and the second end of the air outlet duct has a second air outlet. The second air inlet is connected to the industrial processing area, and the second air outlet is connected to the outside.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention includes an air duct subsystem and a heat pump circulation subsystem. Outside air undergoes heat exchange through the first heat exchange pipe of the sensible heat exchanger to achieve initial cooling. Subsequently, the air is cooled and dehumidified again by the evaporator, resulting in low energy consumption. After cooling and dehumidification, the air undergoes heat exchange through the second heat exchange pipe of the sensible heat exchanger to achieve initial heating. This initial heating utilizes the energy converted from the initial cooling. Subsequently, the air is heated again by the condenser, resulting in low energy consumption. Thus, this invention can achieve low-energy dehumidification of fresh air, making it relatively energy-efficient and environmentally friendly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a first-view structural schematic diagram of the sensible heat exchanger according to an embodiment of the present invention.

[0019] Figure 3 This is a second-view structural schematic diagram of the sensible heat exchanger according to an embodiment of the present invention.

[0020] Explanation of key figure labels: 10. Air Duct Subsystem, 101. Air Inlet Duct, 111. First Air Inlet, 112. First Air Outlet, 113. Air Inlet Section, 114. Turnback Section, 115. Air Outlet Section, 102. Sensible Heat Exchanger, 121. First Heat Exchange Pipe, 122. Second Heat Exchange Pipe, 103. First Fan, 104. Air Outlet Duct, 141. Second Air Inlet, 142. Second Air Outlet, 105. Second Fan, 20. Heat Pump Cycle Subsystem, 201. Evaporator, 202. Condenser, 203. Compressor, 204. Throttling Device, 205. Refrigerant Pipe, 30. Industrial Processing Area, 40. Control Subsystem, 401. Humidity Sensor, 402. Control Module, 403. Temperature Sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0025] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0026] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0027] Example 1 See Figures 1 to 3This utility model discloses an industrial fresh air system, including: an air duct subsystem 10, which includes an air inlet duct 101 and a sensible heat exchanger 102. The first end of the air inlet duct 101 is provided with a first air inlet 111, and the second end of the air inlet duct 101 is provided with a first air outlet 112. The sensible heat exchanger 102 is located in the middle of the air inlet duct 101 and includes a first heat exchange pipe 121 and a second heat exchange pipe 122, which are close to each other and separated from each other; and a heat pump circulation subsystem 20, which is connected to the air inlet duct 101. The heat pump cycle subsystem 20 includes an evaporator 201 and a condenser 202. Outside air enters the air inlet duct 101 through the first air inlet 111. The air exchanges heat with the cooled and dehumidified air in the second heat exchange duct 122 through the first heat exchange duct 121 to achieve the first cooling. Then, the air is cooled and dehumidified again by the evaporator 201. After cooling and dehumidification, the air exchanges heat with the air in the first heat exchange duct 121 through the second heat exchange duct 122 to achieve the first heating. Then, the air is heated again by the condenser 202 and enters the industrial processing area 30 through the first air outlet 112.

[0028] It should be noted that the sensible heat exchanger 102 uses the first heat exchange pipe 121 and the second heat exchange pipe 122 to exchange heat between the air that just enters the air inlet duct 101 and the air that has passed through the evaporator 201. Thus, the sensible heat exchanger 102 completes heat recovery, which reduces the cooling load of the evaporator 201 and the heating energy consumption of the condenser 202, further improving the energy efficiency of the system.

[0029] See Figure 2 as well as Figure 3 Since the first heat exchange pipe 121 and the second heat exchange pipe 122 need to exchange heat to achieve energy recovery, the first heat exchange pipe 121 and the second heat exchange pipe 122 are close to each other. Since the air that just enters the air inlet duct 101 cannot mix with the air after passing through the evaporator 201, the first heat exchange pipe 121 and the second heat exchange pipe 122 need to be separated from each other.

[0030] For example, the distance between the walls of the first heat exchange pipe 121 and the second heat exchange pipe 122 is 5mm-30mm, and the specific value depends on the actual application and is not limited.

[0031] This invention includes an air duct subsystem 10 and a heat pump circulation subsystem 20. Outside air undergoes heat exchange through the first heat exchange pipe 121 of the sensible heat exchanger 102 to achieve initial cooling. Subsequently, the air is cooled and dehumidified again by the evaporator 201, resulting in low energy consumption. After cooling and dehumidification, the air undergoes heat exchange through the second heat exchange pipe 122 of the sensible heat exchanger 102 to achieve initial heating. The initial heating utilizes the energy converted from the initial cooling. Subsequently, the air is heated again by the condenser 202, resulting in low energy consumption. Thus, this invention can achieve low-energy dehumidification of fresh air, making it relatively energy-efficient and environmentally friendly.

[0032] In this embodiment of the utility model, the air inlet duct 101 includes an air inlet section 113, a reversal section 114, and an air outlet section 115; a first air inlet 111 is disposed at the first end of the air inlet section 113, the second end of the air inlet section 113 is connected to the first end of the first heat exchange pipe 121, the second end of the first heat exchange pipe 121 is connected to the first end of the reversal section 114; the second end of the reversal section 114 is connected to the first end of the second heat exchange pipe 122, the second end of the second heat exchange pipe 122 is connected to the first end of the air outlet section 115, and a first air outlet 112 is disposed at the second end of the air outlet section 115.

[0033] In this embodiment of the utility model, the evaporator 201 is disposed in the reversal section 114, and the condenser 202 is disposed in the air outlet section 115.

[0034] In this embodiment of the utility model, the industrial fresh air system further includes a control subsystem 40; the control subsystem 40 includes a humidity sensor 401 and a control module 402, the humidity sensor 401 is electrically connected to the control module 402, and the humidity sensor 401 is disposed in the turnaround section 114.

[0035] In this embodiment of the utility model, the control subsystem 40 further includes a temperature sensor 403, which is electrically connected to the control module 402. Temperature sensors 403 are installed in both the reversal section 114 and the air outlet section 115.

[0036] In this embodiment of the present invention, the heat pump cycle subsystem 20 further includes a compressor 203 and a throttling device 204. Both the compressor 203 and the throttling device 204 are electrically connected to the control module 402. The exhaust port of the compressor 203 is connected to the first end of the condenser 202 through a refrigerant pipe 205. The second end of the condenser 202 is connected to the first end of the evaporator 201 through the refrigerant pipe 205 and the throttling device 204. The second end of the evaporator 201 is connected to the suction port of the compressor 203 through the refrigerant pipe 205.

[0037] In this way, the compressor 203 regulates the state of the refrigerant by compressing it, and promotes the refrigerant to flow in the circulation system, so as to continuously provide the evaporator 201 with low-temperature refrigerant that can evaporate and absorb heat.

[0038] The specific working principle of the heat pump cycle subsystem 20 is as follows: The refrigerant in the evaporator 201 is a low-pressure, low-temperature liquid refrigerant. After the first cooling, the air exchanges heat with the evaporator 201, thereby further reducing the temperature of the air to the dew point and starting to produce condensate, thus achieving dehumidification. The evaporator 201 transforms the low-pressure, low-temperature liquid refrigerant into a low-temperature, low-pressure gaseous refrigerant through heat exchange.

[0039] The absolute humidity content of the air is detected by the humidity sensor 401. The humidity sensor 401 transmits the detected humidity data to the control module 402 and compares the detected absolute humidity content with the target absolute humidity content. When the absolute humidity content is greater than the target absolute humidity content, the compressor 203 is run. The compressor 203 controls the operating frequency according to the humidity content difference through the unit's frequency conversion operation program. When the absolute humidity content is less than or equal to the target absolute humidity content, the compressor 203 does not run.

[0040] The low-pressure, low-temperature gaseous refrigerant obtained after heat exchange in the evaporator 201 enters the compressor 203 through the refrigerant pipe 205. After being compressed by the compressor 203, the temperature and pressure of the low-pressure, low-temperature gaseous refrigerant are increased, resulting in a high-temperature, high-pressure gaseous refrigerant. It then enters the condenser 202 through the refrigerant pipe. The condenser 202 exchanges heat with the air that has been heated for the first time. After the air is heated again, it enters the industrial processing area 30 through the first air outlet 112. The refrigerant after heat exchange flows out of the condenser 202, enters the throttling device 204 through the refrigerant pipe 205, and becomes a low-temperature, low-pressure liquid refrigerant after throttling. It then enters the evaporator 201 through the refrigerant pipe 205, completing one cycle.

[0041] Temperature sensors 403 installed in the turnaround section 114 and the air outlet section 115 transmit the detected temperature data to the control module 402 to monitor the air temperature. The control module 402 adjusts the operating frequency of the compressor 203 or the speed of the first fan 103 according to the difference between the measured temperature and the target temperature to achieve precise control of the air temperature.

[0042] In this embodiment of the utility model, see Figure 2 as well as Figure 3 The first heat exchange pipe 121 extends along the first direction, and the second heat exchange pipe 122 extends along the second direction; the first direction and the second direction are perpendicular to each other.

[0043] Of course, in other embodiments, the first direction and the second direction are parallel to each other, or the first direction and the second direction form an angle α, where 0° < α < 90°.

[0044] The relative positions of the first heat exchange pipe 121 and the second heat exchange pipe 122 are arranged to enable heat exchange and facilitate the arrangement of the air inlet duct 101, without limitation.

[0045] In this embodiment of the utility model, the air duct subsystem 10 further includes a first fan 103, which is installed in the air outlet section 115.

[0046] When the first fan 103 is running, it creates a negative pressure in the air inlet duct 101, drawing in outside air from the first air inlet 111 and simultaneously pushing the air in the air inlet duct 101 toward the first air outlet 112, eventually entering the industrial processing area 30; the first fan 103 can be a centrifugal fan.

[0047] In this embodiment of the utility model, the air duct subsystem 10 further includes an air outlet duct 104 and a second fan 105. The second fan 105 is installed inside the air outlet duct 104. The first end of the air outlet duct 104 has a second air inlet 141, and the second end of the air outlet duct 104 has a second air outlet 142. The second air inlet 141 is connected to the industrial processing area 30, and the second air outlet 142 is connected to the outside.

[0048] The second fan 105 is installed inside the air outlet duct 104. When it is running, it creates positive pressure inside the air outlet duct 104, which pushes the air in the industrial processing area 30 into the air outlet duct 104 through the second air inlet 141, and then discharges it to the outside through the second air outlet 142. The second fan 105 can be a centrifugal fan.

[0049] Example 2 Unlike Embodiment 1, in this embodiment of the present invention, the air inlet duct 101 includes an air inlet section 113, a reversal section 114, and an air outlet section 115, which are sequentially connected; the first heat exchange pipe 121 is sleeved on the outside of the air inlet section 113 or the reversal section 114, and the second heat exchange pipe 122 is sleeved on the outside of the reversal section 114 or the air outlet section 115.

[0050] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. An industrial fresh air system, characterized in that, include: The air duct subsystem includes an air inlet duct and a sensible heat exchanger. The first end of the air inlet duct is provided with a first air inlet, and the second end of the air inlet duct is provided with a first air outlet. The sensible heat exchanger is located in the middle of the air inlet duct and includes a first heat exchange pipe and a second heat exchange pipe. The first heat exchange pipe and the second heat exchange pipe are close to each other and separated from each other. A heat pump circulation subsystem is connected to the air inlet duct, and the heat pump circulation subsystem includes an evaporator and a condenser. Outside air enters the air inlet duct through the first air inlet. The air undergoes heat exchange through the first heat exchange pipe to achieve initial cooling. Then, the air is cooled and dehumidified again by the evaporator. After cooling and dehumidification, the air undergoes heat exchange through the second heat exchange pipe to achieve initial heating. Then, the air is heated again by the condenser and enters the industrial processing area through the first air outlet.

2. The industrial fresh air system according to claim 1, characterized in that: The air inlet duct includes an air inlet section, a reversal section, and an air outlet section; The first air inlet is located at the first end of the air inlet section, the second end of the air inlet section is connected to the first end of the first heat exchange pipe, and the second end of the first heat exchange pipe is connected to the first end of the reversal section. The second end of the reversal section is connected to the first end of the second heat exchange pipe, the second end of the second heat exchange pipe is connected to the first end of the air outlet section, and the first air outlet is located at the second end of the air outlet section.

3. The industrial fresh air system according to claim 1, characterized in that: The air inlet duct includes an air inlet section, a reversing section, and an air outlet section, which are sequentially connected. The first heat exchange pipe is sleeved outside the air inlet section or the reversing section, and the second heat exchange pipe is sleeved outside the reversing section or the air outlet section.

4. The industrial fresh air system according to claim 2 or 3, characterized in that: The evaporator is located in the deflection section, and the condenser is located in the air outlet section.

5. The industrial fresh air system according to claim 2 or 3, characterized in that: The industrial fresh air system also includes a control subsystem; The control subsystem includes a humidity sensor and a control module. The humidity sensor is electrically connected to the control module and is located within the turnaround section.

6. The industrial fresh air system according to claim 5, characterized in that: The control subsystem also includes a temperature sensor, which is electrically connected to the control module. The temperature sensor is installed in both the deflection section and the air outlet section.

7. The industrial fresh air system according to claim 5, characterized in that: The heat pump cycle subsystem also includes a compressor and a throttling device, both of which are electrically connected to the control module; The compressor's exhaust port is connected to the first end of the condenser via a refrigerant pipe, the second end of the condenser is connected to the first end of the evaporator via a refrigerant pipe and the throttling device, and the second end of the evaporator is connected to the compressor's suction port via a refrigerant pipe.

8. The industrial fresh air system according to claim 1, characterized in that: The first heat exchange pipe extends along a first direction, and the second heat exchange pipe extends along a second direction; The first direction is perpendicular to the second direction, or the first direction is parallel to the second direction, or the first direction forms an angle α with the second direction, where 0° < α < 90°.

9. The industrial fresh air system according to claim 2 or 3, characterized in that: The air duct subsystem also includes a first fan, which is installed in the air outlet section.

10. The industrial fresh air system according to claim 1, characterized in that: The air duct subsystem also includes an air outlet duct and a second fan, wherein the second fan is installed inside the air outlet duct; The first end of the air outlet duct has a second air inlet, and the second end of the air outlet duct has a second air outlet. The second air inlet is connected to the industrial processing area, and the second air outlet is connected to the outside.

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