A high COP energy conversion device

Abstract

The utility model discloses a kind of high COP energy conversion devices, including first heat exchanger, second heat exchanger, condensing chamber, heating chamber, drying room and drying room are sequentially communicated by trachea circulation;The first heat exchange structure of first heat exchanger is connected in the condensing chamber, the low-temperature low-humidity gas after the gas in the condensing chamber passes through the first heat exchange structure is cooled into and enters heating chamber;The second heat exchange structure of first heat exchanger is connected in the heating chamber, the high-temperature low-humidity gas after the low-temperature gas in the heating chamber passes through second heat exchange structure is heated into and enters drying room;High-temperature low-humidity gas becomes high-temperature high-humidity gas after drying room and enters drying room;Second heat exchanger is connected in drying room, high-temperature high-humidity gas becomes high-temperature low-humidity gas after passing through second heat exchanger and enters condensing chamber. By re-delivering the gas in drying room to condensing chamber, waste heat and waste gas can be effectively recovered, thereby improving the overall COP.

Description

Technical Field

[0001] This utility model relates to the field of energy conversion technology, and in particular to a high COP energy conversion device. Background Technology

[0002] As a key component for heat recovery and utilization, the energy conversion device's Coefficient of Performance (COP) directly impacts system energy consumption and operating costs. Traditional energy conversion technologies primarily rely on sensible heat exchange, using temperature differences to drive heat transfer; that is, they utilize only the enthalpy (sensible heat) corresponding to gas temperature changes for energy transfer. However, this single sensible heat utilization mode significantly undermines the exploitation of latent heat in the gas (such as the enthalpy of water vapor phase change), resulting in system COPs generally below 4.0, making it difficult to meet the high energy efficiency requirements of modern industry.

[0003] The core technological bottleneck in the design of existing energy conversion devices lies in the lack of a latent heat recovery mechanism. Specifically:

[0004] Latent heat waste during the heating process: When low-temperature, low-humidity gas flows through a heat exchanger, traditional technologies only raise the gas temperature through sensible heat exchange, without actively utilizing the evaporation process of liquid water. In fact, if mist-like water is introduced during the heating stage, the liquid water absorbs heat and evaporates into water vapor (latent heat absorption process), which can significantly increase the total heat carried per unit mass of gas (sensible heat + latent heat). However, existing devices lack guidance and utilization of this phase change process, missing the opportunity to amplify heat absorption through latent heat.

[0005] Latent heat loss during cooling: When high-temperature and high-humidity gases cool down, the large amount of latent heat released by the condensation of water vapor could be recovered through a heat exchanger and used to preheat low-temperature gases or supplement other heat sources. However, traditional devices often discharge the condensate directly into the system, causing this latent heat to be lost with the wastewater, failing to achieve a closed-loop cycle of "heat recovery and reuse".

[0006] Taking industrial waste heat recovery as an example, high-temperature exhaust gases generally have a high water vapor content, but the latent heat they carry is simply wasted through condensation. In heat pump systems, if the latent heat absorption is not enhanced through humidification during the heating of the low-temperature working fluid, the evaporator efficiency will also be limited. With the increasing demand for high-efficiency equipment in fields such as industrial waste heat recovery and district heating, developing an energy conversion device that can coordinate sensible heat and latent heat and construct a "phase change heat high-efficiency coupling" mechanism has become a pain point in the industry. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a high COP energy conversion device that can effectively recover waste heat and waste gas, thereby improving the overall COP.

[0008] According to a first aspect of the present invention, a high COP energy conversion device includes a first heat exchanger, a second heat exchanger, a condensing chamber, a heating chamber, a drying chamber, and a drying chamber that are sequentially connected by a gas pipe, wherein the condensing chamber is also connected to a gas supply device.

[0009] The condensing chamber is connected to a first heat exchange structure of a first heat exchanger. After passing through the first heat exchange structure, the gas in the condensing chamber is dehumidified and becomes low-humidity gas before entering the heating chamber. At the same time, the moisture in the gas condenses into water and releases heat, which is absorbed by the first heat exchange structure and the remaining gas.

[0010] The heating chamber is connected to a second heat exchange structure of the first heat exchanger. The low-humidity gas in the heating chamber is further heated after passing through the second heat exchange structure and becomes high-temperature low-humidity gas before entering the drying room.

[0011] After passing through the drying oven, the high-temperature, low-humidity gas becomes high-temperature, high-humidity gas and then enters the drying chamber;

[0012] A second heat exchanger is connected to the drying chamber. After passing through the second heat exchanger, the high-temperature and high-humidity gas becomes a high-temperature and low-humidity gas and enters the condensation chamber.

[0013] The high COP energy conversion device and energy conversion method according to the present invention have at least the following beneficial effects: by re-transporting the gas in the drying chamber to the condensing chamber, waste heat and waste gas can be effectively recovered, thereby improving the overall COP.

[0014] According to some embodiments of the present invention, the first heat exchange structure and the second heat exchange structure are connected through a circulation pipeline, and a heat exchange medium is connected in the circulation pipeline.

[0015] According to some embodiments of this utility model, the temperature and humidity conditions in each chamber are as follows:

[0016] The humidity of the gas entering the condenser is higher than that of the gas exiting the condenser.

[0017] The temperature of the gas entering the heating chamber is lower than the temperature of the gas exiting the heating chamber;

[0018] The humidity of the gas entering the drying oven is lower than the humidity of the gas exiting the drying oven;

[0019] The temperature of the gas entering the drying chamber is higher than that of the gas exiting the drying chamber, and the humidity of the gas entering the drying chamber is higher than that of the gas exiting the drying chamber.

[0020] According to some embodiments of this utility model, both the condensation chamber and the drying chamber are connected to the drainage system through drain outlets.

[0021] According to some embodiments of this utility model, an atomizing nozzle is connected to the heating chamber, and the atomizing nozzle is connected to the drainage system through a water pipe with a solenoid valve.

[0022] According to some embodiments of this utility model, the atomizing nozzle is an ultrasonic atomizing nozzle.

[0023] According to some embodiments of the present invention, there are at least three second heat exchange structures arranged sequentially at intervals along the airflow direction in the heating chamber, and the atomizing nozzles are disposed on each of the second heat exchange structures.

[0024] According to some embodiments of this utility model, the inlet and outlet of the heating chamber are both connected to a heat flow sensor and a humidity sensor.

[0025] According to some embodiments of the present invention, the high COP energy conversion device further includes a control module, and fans are connected to both the condensing chamber and the heating chamber.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a schematic diagram of the high COP energy conversion device according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic flowchart of the energy conversion method of the high COP energy conversion device according to an embodiment of the present invention.

[0030] 100. First heat exchanger; 110. First heat exchange structure; 120. Second heat exchange structure; 130. Circulation pipeline; 200. Second heat exchanger; 300. Condensation chamber; 400. Heating chamber; 410. Atomizing nozzle; 420. Solenoid valve; 500. Drying oven; 600. Drying chamber; 700. Gas supply equipment; 800. Drain outlet; 900. Fan. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] refer to Figure 1 As shown, the high COP energy conversion device according to an embodiment of the present invention includes a first heat exchanger 100, a second heat exchanger 200, a condensing chamber 300, a heating chamber 400, a drying chamber 500, and a drying chamber 600 that are sequentially connected by a gas pipe. The condensing chamber 300 is also connected to a gas supply device 700.

[0036] The condensing chamber 300 is connected to the first heat exchange structure 110 of the first heat exchanger 100. After passing through the first heat exchange structure 110, the gas in the condensing chamber 300 initially becomes low-temperature and low-humidity gas and enters the heating chamber 400. At the same time, the moisture in the gas condenses into water and releases heat, which is absorbed by the first heat exchange structure and the remaining gas.

[0037] The heating chamber 400 is connected to a second heat exchange structure 120 of the first heat exchanger 100. The low-humidity gas in the heating chamber 400 is further heated after passing through the second heat exchange structure 120 and becomes a high-temperature low-humidity gas before entering the drying room 500.

[0038] After passing through the drying oven at 500°C, the high-temperature, low-humidity gas becomes high-temperature, high-humidity gas and then enters the drying chamber at 600°C.

[0039] A second heat exchanger 200 is connected to the drying chamber 600. After passing through the second heat exchanger 200, the high-temperature and high-humidity gas becomes a high-temperature and low-humidity gas and enters the condensation chamber 300.

[0040] In actual use, by retransmitting the gas in the drying chamber 600 to the condensing chamber 300, waste heat and waste gas can be effectively recovered, thereby improving the overall COP.

[0041] In some specific embodiments of this utility model, it may also have the following additional technical features: the first heat exchange structure 110 and the second heat exchange structure 120 are connected through a circulation pipe 130, and a heat exchange medium is connected in the circulation pipe 130.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: the temperature and humidity conditions in each chamber are as follows:

[0043] The humidity of the gas entering the condenser chamber 300 is higher than the humidity of the gas exiting the condenser chamber 300;

[0044] The temperature of the gas entering the heating chamber 400 is lower than the temperature of the gas exiting the heating chamber 400;

[0045] The humidity of the gas entering the drying oven 500°C is lower than the humidity of the gas exiting the drying oven 500°C.

[0046] The temperature of the gas entering the drying chamber 600 is higher than that of the gas exiting the drying chamber 600, and the humidity of the gas entering the drying chamber 600 is higher than that of the gas exiting the drying chamber 600.

[0047] In some specific embodiments of this utility model, it may also have the following additional technical features: the second heat exchanger 200 may have the same structure as the first heat exchanger 100. In this case, the second heat exchanger has two heat exchange structures, namely a third heat exchange structure and a fourth heat exchange structure. The second heat exchanger also includes a circulation pipeline connecting the third heat exchange structure and the fourth heat exchange structure, and this circulation pipeline is also filled with a heat exchange medium. The third heat exchange structure and the fourth heat exchange structure may be simultaneously arranged in the drying chamber. The ratio of the contact area of ​​the third heat exchange structure with the gas to the contact area of ​​the fourth heat exchange structure with the gas is 1:1.5-3. In this case, the fourth heat exchange structure is used to absorb heat, that is, to cool the gas, while the heat flows through the heat exchange medium to the third heat exchange structure to heat and keep the remaining gas warm, so that it can be easily reintroduced into the condenser 300 for the utilization of waste heat. Preferably, in order to improve the accuracy of the airflow rate directed to the third and fourth heat exchange structures respectively, a three-way pipe is installed between the drying chamber 500 and the drying room 600. The airflow entering the drying room 600 is then directed to the third and fourth heat exchange structures from the two outlets of the three-way pipe. By setting different outlet diameters of the three-way pipe, the accuracy of the airflow directed to the third and fourth heat exchange structures can be achieved. At the same time, flow control valves can be installed at the two outlets of the three-way pipe to control the gas flow rate, thereby achieving a more accurate gas flow rate.

[0048] In some specific embodiments of this utility model, it may also have the following additional technical features: the second heat exchanger may also be a heat exchange scheme that achieves heat exchange through the Peltier effect, which is not limited here.

[0049] In some specific embodiments of this utility model, it may also have the following additional technical features: the heat exchange medium can be Freon or other heat exchange medium technologies commonly used in the prior art, which are not limited here.

[0050] In some specific embodiments of this utility model, it may also have the following additional technical features: both the condensation chamber 300 and the drying chamber 600 are connected to the drainage system through the drain outlet 800.

[0051] In some specific embodiments of this utility model, it may also have the following additional technical features: an atomizing nozzle 410 is connected in the heating chamber 400, and the atomizing nozzle 410 is connected to the drainage system through a water pipe with a solenoid valve 420.

[0052] In some specific embodiments of this utility model, it may also have the following additional technical features: the atomizing nozzle 410 is an ultrasonic atomizing nozzle 410. Specifically, the droplet diameter of the water mist sprayed by the atomizing nozzle 410 is 1μm-3μm.

[0053] In some specific embodiments of this utility model, it may also have the following additional technical features: there are at least three second heat exchange structures 120 arranged sequentially at intervals along the airflow direction in the heating chamber 400, and atomizing nozzles 410 are arranged on each of the second heat exchange structures 120.

[0054] In some specific embodiments of this utility model, it may also have the following additional technical features: the inlet and outlet of the heating chamber 400 are both connected to heat flow sensors and humidity sensors.

[0055] In some specific embodiments of this utility model, it may also have the following additional technical features: a fan 900 is connected to both the condensing chamber 300 and the heating chamber 400.

[0056] In some specific embodiments of this utility model, it may also have the following additional technical features: the high COP energy conversion device further includes a control module, which is electrically connected to the heat flow sensor, the humidity sensor and the solenoid valve 420 respectively.

[0057] Through the above design, the opening degree of the solenoid valve 420 is dynamically adjusted based on the heat flow difference and the target humidity value, thereby achieving precise control of the humidity content of the gas in the heating chamber 400 and improving the system's heat exchange efficiency. Specifically, the dynamic control method of the control module includes the following steps:

[0058] (1) Real-time acquisition of inlet heat flux value Qin, outlet heat flux value Qout, inlet humidity Hin, and outlet humidity Hout of the heating chamber 400, and calculation of heat flux difference ΔQ=Qin Qout and humidity change ΔH=Hout Hin;

[0059] (2) The target heat flow difference ΔQset and the target humidity change ΔHset are preset. When ΔQ>ΔQset and ΔH<ΔHset, it is determined that the gas water carrying capacity needs to be increased to enhance heat absorption. The control module increases the opening degree of the solenoid valve 420 according to the proportional integral derivative (PID) algorithm to increase the atomized water spray volume.

[0060] (3) When ΔQ < ΔQset or ΔH > ΔHset, it is determined that the gas moisture content is too high or the heat exchange is excessive. The control module gradually reduces the opening of the solenoid valve 420 until ΔQ and ΔH return to the target range.

[0061] (4) The ultrasonic atomizing nozzles 410 are evenly distributed on the surface of the second heat exchange structure 120. The water spray volume of a single nozzle is linearly related to the opening degree of the solenoid valve 420. The nozzle spacing is optimized according to the heat flow distribution gradient of the heating chamber 400 section to ensure that the atomized droplets are in full contact with the high-temperature gas and avoid local over-humidification or uneven heat exchange.

[0062] Furthermore, the control module incorporates a fuzzy logic compensation algorithm to handle multi-variable coupling interference.

[0063] When the difference between the outlet gas temperature Tdry_out of the drying chamber 600 and the inlet gas temperature Teva_in of the condensing chamber 300 exceeds the preset threshold, it is determined that the waste heat recovery efficiency of the system has decreased, and the basic opening of the solenoid valve 420 is automatically increased to enhance waste heat absorption by increasing the moisture content of the gas in the heating chamber 400.

[0064] When the deviation rate between the real-time drainage volume Wdrain of the drainage system and the theoretical condensate volume Wtheo (calculated based on changes in gas humidity) exceeds 5%, the sensor calibration program is triggered to correct the impact of the humidity sensor measurement error on the control of solenoid valve 420.

[0065] The heat flow sensor uses an infrared heat flow meter with an accuracy of ±2% and a response time of <1s; the humidity sensor uses a capacitive dew point transmitter with a measurement range of 0-100% RH and an accuracy of ±1.5% RH, ensuring the real-time performance and accuracy of dynamic control.

[0066] The solenoid valve 420 is a proportional electric regulating valve with an opening adjustment resolution of 0.1%. The flow characteristic curve of the atomizing nozzle 410 is pre-stored in the control module to achieve fine control of the water spray volume and avoid condensation on the wall of the heating chamber 400 or increased energy consumption due to excessive water spray.

[0067] Taking three secondary heat exchange structures 120 as an example, the secondary heat exchange structures 120 of each heating chamber 400 are divided into a preheating section heat exchange structure, an enhanced heat exchange section heat exchange structure, and a homogenizing section heat exchange structure along the airflow direction. Each section is equipped with an independent set of atomizing nozzles 410 and a humidity sensor.

[0068] The atomizing nozzle 410 in the heat exchange structure of the preheating section is used for initial humidification, and the solenoid valve 420 has an initial opening of 30%-50% to initially increase the humidity of the gas and prevent the high-temperature gas from directly impacting the subsequent second heat exchange structure 120.

[0069] The heat exchange structure of the enhanced heat exchange section is equipped with an atomizing nozzle 410 to further increase the humidity of the gas. The opening of the solenoid valve 420 is dynamically adjusted according to the real-time data of the heat flow sensor in this section. The goal is to maximize the sensible heat-latent heat exchange efficiency of the gas in this section.

[0070] The heat exchange structure of the heat exchange section is equipped with a humidity compensation nozzle to compensate for the humidity of the gas. When the outlet humidity sensor detects that Hout is lower than the process requirements of the drying chamber 500, the solenoid valve 420 automatically opens to the compensation opening to ensure that the moisture content of the gas entering the drying chamber 500 is stable.

[0071] The humidity sensor data of each heat exchange structure and the opening degree of the solenoid valve of the nozzle group 420 form a local closed-loop control. At the same time, the global optimization algorithm of the control module is connected to achieve the synergy of segmented control and system-level energy efficiency optimization. Compared with the traditional single nozzle control scheme, the heat exchange efficiency is improved by 15%-20%, and the system COP (energy efficiency ratio) is increased to more than 4.

[0072] In some specific embodiments of this utility model, it may also have the following additional technical features: the atomizing nozzle 410 is inclined. The spray direction of the atomizing nozzle is towards the entrance of the drying chamber and it is inclined towards the top of the drying chamber, with an inclination angle of 5°-30°.

[0073] It should be noted that the control module, heat flow sensor, humidity sensor and solenoid valve 420 are all commonly used technical solutions by those skilled in the art, and their specific structures and principles will not be described in detail here.

[0074] refer to Figure 2 As shown, the energy conversion method of the high COP energy conversion device according to an embodiment of the present invention includes the following steps:

[0075] S100, condenser chamber 300 dehumidification:

[0076] The gas supply equipment 700 delivers external gas to the condensing chamber 300. The heat exchange medium in the circulation pipe 130 of the first heat exchange structure 110 of the first heat exchanger 100 in the condensing chamber 300 performs heat exchange and dehumidification treatment on the gas, reducing its humidity and forming low-humidity gas. At the same time, the water in the gas condenses into water and releases heat, which is absorbed by the heat exchange medium of the first heat exchange structure and the remaining gas, and is delivered to the heating chamber 400 through the gas pipe. Meanwhile, the heat exchange medium that has absorbed heat transfers heat to the second heat exchange structure 120 of the first heat exchanger 100 in the heating chamber 400. The water generated by condensation in the condensing chamber 300 is discharged through the drain outlet 800.

[0077] Specifically, the S100 condenser chamber uses 300 dehumidifiers (for the first intake air):

[0078] When ambient temperature and humidity gas is input into the gas supply equipment and passes through the first heat exchange structure 110:

[0079] Water vapor condenses into water (discharged through the drain), releasing latent heat.

[0080] Some of the latent heat is absorbed by the heat exchange medium and transported to the second heat exchange structure in the heating chamber (for heating) through the circulation pipeline.

[0081] The remaining latent heat is absorbed by the low-humidity gas, and the gas temperature drops slightly (e.g., from 25℃ to 22℃), forming a low-humidity gas close to the ambient temperature (not "low temperature and low humidity").

[0082] During subsequent cycles, the high-temperature, low-humidity exhaust gas from the drying chamber enters the condensation chamber, repeating the dehumidification process (the temperature changes from 60℃ at the drying chamber outlet to 58℃, and the humidity decreases).

[0083] Meanwhile, after dehumidification in the condenser chamber, the moisture content of the gas decreases, and the specific heat capacity decreases from the high humidity state (approximately 1.05 kJ / kg). The humidity level drops from ℃ to a low humidity state (approximately 1.0 kJ / kg). (℃), the energy required for heating in the heating chamber is reduced, and the temperature rises faster with the same heat input (such as an efficiency increase of 10%-15%).

[0084] S200, heat exchange medium circulation enhancement:

[0085] The first heat exchange structure 110 and the second heat exchange structure 120 of the first heat exchanger 100 are connected through a circulation pipe 130. The heat exchange medium circulates between the two to transfer the heat released when the gas in the condensing chamber 300 is dehumidified to the heating chamber 400.

[0086] S300, heating chamber 400 temperature rise process:

[0087] After the low-humidity gas enters the heating chamber 400, the second heat exchange structure 120 of the first heat exchanger 100 heats the low-humidity gas, making it further heated into high-temperature low-humidity gas, and then transported to the drying room 500.

[0088] Specific S300 heating chamber 400 temperature rise process:

[0089] Low-humidity gas (from the condenser, initially at 22°C and low humidity, then 58°C and low humidity during circulation) is heated by the second heat exchange structure:

[0090] Because gases have low specific heat capacity (low moisture content), the same amount of heat input can achieve a higher temperature rise (e.g., from 22℃ to 60℃, or from 58℃ to 70℃ for circulating gas).

[0091] Atomized water is sprayed into the nozzle, and the liquid water evaporates and absorbs sensible heat, which is then converted into latent heat, increasing the total heat of the gas and improving the moisture absorption efficiency of the drying room.

[0092] S400, Drying Oven 500 Moisture Absorption and Circulation:

[0093] High-temperature, low-humidity gas enters the drying chamber 500 and comes into contact with the material. After absorbing the moisture from the material, it becomes high-temperature, high-humidity gas and enters the drying chamber 600. During this process, the humidity of the gas in the drying chamber 500 increases.

[0094] S500, Drying Chamber 600 Heat Recovery and Recirculation:

[0095] High-temperature and high-humidity gas undergoes heat exchange in the drying chamber 600 through the second heat exchanger 200. The gas is cooled and dehumidified, and the released latent heat is recovered through the second heat exchanger 200, transforming it into high-temperature and low-humidity gas. The gas then re-enters the condensation chamber 300 to complete the cycle. The condensed moisture in the drying chamber 600 is discharged through the drainage system.

[0096] Specifically, heat recovery and recirculation in the S500 drying chamber:

[0097] The high-temperature, high-humidity gas discharged from the drying oven (e.g., 70°C, high humidity) is cooled to 58°C, low-humidity gas by the second heat exchanger.

[0098] Water vapor is condensed and discharged, and its latent heat is recovered by the second heat exchanger (which can be used for preheating or other processes).

[0099] The cooled, high-temperature, low-humidity exhaust gas (58°C) returns to the condensation chamber and enters the next cycle, instead of being discharged into the external environment.

[0100] Specifically, the materials can be fresh flowers or fresh fruits and vegetables that still contain moisture and need to be dried.

[0101] Using fresh flowers as an example, we will illustrate Example 1, Example 2, Comparative Example 1, and Comparative Example 2 together.

[0102] Example 1 is the complete solution of this technical solution: a closed-loop circulation of condensation chamber - heating chamber - drying chamber - drying chamber, equipped with first / second heat exchangers, ultrasonic atomizing nozzles and control modules, to achieve dual recovery of sensible heat and latent heat and precise temperature and humidity control;

[0103] Example 2 only includes the method steps: executing the S100-S500 exhaust gas recirculation process, but without configuring atomizing nozzles, high-efficiency heat exchangers and control modules, relying on basic heat exchange and passive circulation;

[0104] Comparative Example 1 is an open-loop direct exhaust system: external gas is directly heated before entering the drying chamber, and the exhaust gas from the drying chamber is directly discharged without heat recovery or circulation.

[0105] Comparative Example 2 is a simple circulation system: the external gas is heated before entering the drying room, the exhaust gas is dehumidified and then circulated for heating, only a portion of the sensible heat is recovered, and there is no latent heat utilization or intelligent control.

[0106] Basic processing parameters for fresh flowers:

[0107] The total weight of the fresh flowers is 5 tons, and the initial moisture content of the fresh flowers is 80% (wet basis). The goal is to dehydrate them to 20% in three stages (each time reducing to 50% → 30% → 20%).

[0108] Drying oven process area:

[0109] Temperature: First stage 50℃ (fixing) → Middle stage 60℃ (accelerating dehydration) → Final stage 55℃ (color preservation and setting);

[0110] Humidity: 60% RH in the first stage → 40% RH in the middle stage → 30% RH in the last stage.

[0111] Detailed process:

[0112] 1. Pretreatment stage (0-1 hour)

[0113] Feeding and airflow start-up: Fresh flowers are evenly spread on the drying room trays to a thickness of 5-8cm. The fans in the condensing chamber and heating chamber are started to establish gas circulation.

[0114] Initial air intake (first / second / fourth embodiment only):

[0115] The gas supply equipment introduces ambient temperature and humidity gas (25℃, 70% RH) from outside into the condensation chamber, where it is dehumidified by the first heat exchange structure.

[0116] Water vapor condenses and is discharged, and the gas becomes a low-humidity state (22℃, 30% RH). Some of the latent heat is transferred to the heating chamber through the heat exchange medium.

[0117] 2. First dehydration (1-5 hours, target moisture content 50%)

[0118] Example 1: Heating chamber treatment:

[0119] Low-humidity gas (22℃) is heated by the second heat exchange structure (combined with the condenser to recover latent heat, accounting for 40% of the heating energy), and the temperature rises to 50℃. The ultrasonic atomizing nozzle sprays condensate water (solenoid valve opening 30%), and the gas humidity increases to 50% RH (sensible heat + latent heat coupling, total heat increases by 15%).

[0120] Drying room moisture absorption:

[0121] The gas at 50℃ and 50% RH absorbs moisture from the flowers and becomes a high-temperature and high-humidity gas at 45℃ and 70% RH, which then enters the drying chamber.

[0122] Drying chamber recycling:

[0123] The second heat exchanger cools the gas to a high-temperature, low-humidity state of 48°C and 30% RH, and the condensate is discharged, while the exhaust gas returns to the condensation chamber for circulation.

[0124] Example 2: Differences:

[0125] The heating chamber has no atomizing nozzles, and the gas is heated to 50°C with only sensible heat (30% RH). The exhaust gas at the drying chamber outlet has a higher humidity (75% RH), and the recovery efficiency of the drying chamber is low (exhaust gas temperature 45°C).

[0126] Comparative Example 1: Differences:

[0127] External gas is directly heated to 50℃ (25℃→50℃), and the exhaust gas from the drying chamber (45℃, 70% RH) is directly discharged, requiring continuous replenishment of fresh air. Energy consumption is concentrated in repeated heating.

[0128] Comparative Example 2: Differences:

[0129] The drying chamber only performs simple dehumidification, and the exhaust gas temperature drops to 40°C before being circulated. The heating chamber needs to be supplemented with heat to reach 50°C, resulting in higher energy consumption than in Example 1.

[0130] 3. Second dehydration (5-10 hours, target moisture content 30%)

[0131] Example 1: Heating chamber temperature rise:

[0132] The circulating exhaust gas in the drying chamber (48℃, 30% RH) is dehumidified again in the condensation chamber (temperature slightly drops to 46℃, humidity 25% RH). The second heat exchange structure heats up to 60℃. The control module adjusts the opening of the solenoid valve to 50% according to the humidity of the drying chamber (currently 45% RH, target 40%), and the gas humidity is precisely controlled to 40% RH.

[0133] Drying oven for enhanced dehydration:

[0134] The gas at 60℃ and 40% RH accelerates moisture evaporation, and the outlet gas is at 55℃ and 60% RH. After being recovered in the drying chamber, the exhaust gas temperature is 52℃ and it is circulated to the condensation chamber.

[0135] Example 2: Differences:

[0136] Without a control module, the humidity of the exhaust gas is passively regulated, resulting in a fluctuation of ±5% RH at the outlet humidity of the drying chamber, which reduces the dehydration efficiency.

[0137] Comparative Example 2: Differences:

[0138] The drying chamber lacks a high-efficiency heat exchanger, so the exhaust gas temperature only drops to 50°C. The heating chamber needs to add more energy to raise the temperature to 60°C, increasing energy consumption by 10%.

[0139] 4. Third dehydration (10-15 hours, target moisture content 20%)

[0140] Example 1: Fine-tuning of temperature and humidity:

[0141] The outlet temperature of the heating chamber is reduced to 55℃ (to meet color preservation requirements), the opening of the atomizing nozzle is reduced to 20%, and the gas humidity is maintained at 30% RH to ensure uniform color and moisture content of the flowers.

[0142] Fine recovery in the drying chamber:

[0143] The exhaust gas (50℃, 50% RH) from the drying oven outlet passes through the second heat exchanger, and the exhaust gas temperature is 50℃ and the humidity is 25% RH. It is then circulated to the condensation chamber to complete the final dehydration.

[0144] Comparative Example 1: Key Defects:

[0145] Frequent air replacement caused temperature fluctuations of ±5℃ in the drying room, resulting in scorched petals on fresh flowers and a final moisture content difference of ±5%, thus damaging the quality.

[0146] Comparison parameters of the examples:

[0147]

[0148] The above analysis shows that the technical solution of this application is superior to the technical solution of the prior art, exhibiting better energy-saving performance and COP (Coefficient of Performance) ratio, and also possessing advantages in other aspects. The embodiments of this utility model have been described in detail above with reference to the accompanying drawings. However, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model.

Claims

1. A high COP energy conversion device, characterized in that, It includes a first heat exchanger (100), a second heat exchanger (200), a condensing chamber (300), a heating chamber (400), a drying chamber (500), and a drying chamber (600) that are sequentially connected by a gas pipe. The condensing chamber (300) is also connected to a gas supply device (700). The condensing chamber (300) is connected to a first heat exchange structure (110) of a first heat exchanger (100). After passing through the first heat exchange structure (110), the gas in the condensing chamber (300) is dehumidified and becomes low-humidity gas before entering the heating chamber (400). At the same time, the moisture in the gas condenses into water and releases heat, which is absorbed by the first heat exchange structure and the remaining gas. The heating chamber (400) is connected to a second heat exchange structure (120) of the first heat exchanger (100). The low-humidity gas in the heating chamber (400) is further heated after passing through the second heat exchange structure (120) and becomes a high-temperature low-humidity gas before entering the drying room (500). After passing through the drying oven (500), the high-temperature, low-humidity gas becomes a high-temperature, high-humidity gas and enters the drying chamber (600); A second heat exchanger (200) is connected in the drying chamber (600). After passing through the second heat exchanger (200), the high-temperature and high-humidity gas becomes a high-temperature and low-humidity gas and enters the condensation chamber (300).

2. The high COP energy conversion device according to claim 1, characterized in that, The first heat exchange structure (110) and the second heat exchange structure (120) are connected through a circulation pipe (130), and a heat exchange medium is connected in the circulation pipe (130).

3. The high COP energy conversion device according to claim 2, characterized in that, The temperature and humidity conditions in each room are as follows: The humidity of the gas entering the condenser (300) is higher than the humidity of the gas exiting the condenser (300); The temperature of the gas entering the heating chamber (400) is lower than the temperature of the gas exiting the heating chamber (400); The humidity of the gas entering the drying oven (500) is lower than the humidity of the gas exiting the drying oven (500); The temperature of the gas entering the drying chamber (600) is higher than that of the gas exiting the drying chamber (600), and the humidity of the gas entering the drying chamber (600) is higher than that of the gas exiting the drying chamber (600).

4. The high COP energy conversion device according to claim 3, characterized in that, Both the condensation chamber (300) and the drying chamber (600) are connected to the drainage system through drain outlets (800).

5. The high COP energy conversion device according to claim 4, characterized in that, The heating chamber (400) is connected to an atomizing nozzle (410), which is connected to a drainage system via a water pipe with a solenoid valve (420).

6. The high COP energy conversion device according to claim 5, characterized in that, The atomizing nozzle (410) is an ultrasonic atomizing nozzle (410).

7. The high COP energy conversion device according to claim 6, characterized in that, There are at least three second heat exchange structures (120) arranged sequentially at intervals along the airflow direction in the heating chamber (400), and the atomizing nozzles (410) are arranged on each of the second heat exchange structures (120).

8. The high COP energy conversion device according to claim 7, characterized in that, The inlet and outlet of the heating chamber (400) are both connected to heat flow sensors and humidity sensors.

9. The high COP energy conversion device according to claim 8, characterized in that, A fan (900) is connected to both the condensation chamber (300) and the heating chamber (400).

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