Heat pump energy-saving system and industrial drum dryer

Abstract

The present invention relates to the field of heat pump energy-saving systems, and particularly to a heat pump energy-saving system and an industrial drum dryer. It includes at least two sets of heat pump systems, a control system, and a heat recovery and utilization device. It also includes a wind channel, which is provided with an air inlet and an air outlet, and a first fan is arranged at the air inlet; the heat recovery and utilization device includes a heat receiver, a conduction pipeline, and a heat releaser. The heat receiver is internally provided with a microelectromechanical control element, and the heat receiver is installed at the air outlet. The conduction pipeline is internally provided with an adjustable micro-valve for adjusting the flow rate and a variable diversion module for adjusting the flow rate. The heat releaser is close to the air inlet and is located above the condenser. The heat receiver and the heat releaser are communicated through the conduction pipeline; the flow rate of the high-temperature gas in the conduction pipeline is increased and local turbulence is formed in the pipeline, and the hot air is quickly transferred from the heat receiver to the heat releaser, reducing energy consumption and operating costs.

Description

Technical Field

[0001] The present invention relates to the field of heat pump energy-saving systems, and particularly to heat pump energy-saving systems and industrial drum dryers. Background Art

[0002] With the continuous popularization of the concept of energy conservation and environmental protection, heat pump systems, as devices for efficiently utilizing energy, have been widely applied in fields such as building heating, cooling, and industrial waste heat utilization. Existing heat pump systems mainly rely on the basic cycle composed of a compressor, an evaporator, a condenser, and an expansion valve to achieve heat conversion and transfer by enhancing low-grade heat energy in the environment. However, traditional heat pump systems have the following deficiencies:

[0003] During the operation of the heat pump, most of the hot air generated after the condenser heats the surrounding air is directly discharged into the environment without being effectively recycled. This not only causes energy waste but also affects the overall energy efficiency performance of the system. In traditional designs, there is a lack of an effective mechanism for capturing and utilizing the heat energy formed near the condenser, which limits the energy-saving potential of the heat pump system. Summary of the Invention

[0004] The first objective of the present invention is to provide a heat pump energy-saving system with significant energy-saving advantages through the recycling and dynamic regulation of heat energy.

[0005] The second objective of the present invention is to provide an industrial drum dryer with significant energy-saving advantages through the recycling and dynamic regulation of heat energy.

[0006] The first objective of the present invention is achieved as follows:

[0007] A heat pump energy-saving system includes at least two sets of heat pump systems, a control system, and a heat recovery and utilization device. It also includes a wind channel, which is provided with an air inlet and an air outlet, and a first fan is arranged at the air inlet;

[0008] The heat pump system includes a compressor, an evaporator, a condenser, and an electronic expansion valve, and the condenser is close to the air inlet;

[0009] The heat recovery and utilization device includes a heat receiver, a conduction pipeline, and a heat releaser. The heat receiver is internally provided with a microelectromechanical control element, the heat receiver is installed at the air outlet, the conduction pipeline is internally provided with an adjustable micro-valve for adjusting the flow rate and a variable diversion module for adjusting the flow rate, the heat releaser is close to the air inlet and is located above the condenser, and the heat receiver and the heat releaser are connected through the conduction pipeline;

[0010] The heat pump system, the first fan, the microelectromechanical control element, the micro-valve, and the variable diversion module are respectively electrically connected to the control system;

[0011] When the heat pump system is working, the condenser heats the surrounding air to form hot air. The hot air is guided by the first fan to form hot wind and enters the air duct along the air inlet. Finally, the hot wind is discharged from the air outlet and received by the heat receiver, and the hot wind is guided into the conduction pipeline. At the same time, the microelectromechanical control element detects the hot wind, and the microelectromechanical control element adjusts the micro valve and the variable flow guiding module, so that the flow rate of the high-temperature gas in the conduction pipeline is increased and local turbulence is formed in the pipeline, so that the hot wind is quickly transferred from the heat receiver to the heat release device;

[0012] The heat release device releases hot wind to the surrounding of the condenser to preheat the air around the condenser. The condenser quickly heats the preheated air to form hot air. The hot air is guided by the first fan to form hot wind and enters the air duct along the air inlet, and the cycle repeats.

[0013] Using the high-temperature hot air generated by the heat pump system, after being guided by the first fan to form hot wind and entering the air duct, through the closed loop composed of the heat receiver, the conduction pipeline and the heat release device, the heat in the hot wind is quickly recovered and transferred to the air around the condenser, realizing the preheating of waste heat. This multi-stage heat exchange greatly improves the overall energy efficiency of the system and reduces energy consumption.

[0014] The built-in microelectromechanical control element detects the hot wind temperature, and by adjusting the adjustable micro valve and the variable flow guiding module, the gas flow rate in the conduction pipeline is increased, and local turbulence is formed. The local turbulence significantly increases the heat transfer coefficient between the hot wind and the pipeline wall, ensuring that the heat can be quickly and efficiently transferred from the heat receiver to the heat release device, thus accelerating the preheating effect.

[0015] The integrated adaptive algorithm module real-time collects the data of the temperature sensor, and dynamically adjusts the opening of the electronic expansion valve, the operating frequency of the compressor and the rotation speed of the first fan according to the ambient temperature, so that the heat pump system and the heat recovery device always operate in the best state. This dynamic control not only improves the heat exchange efficiency, but also ensures that the equipment can operate efficiently under different working conditions, further reducing energy consumption and operating costs.

[0016] The first object of the present invention can also be solved by the following technical measures:

[0017] Further, the adjustable micro valve includes a valve body, a valve flap and a micro actuator, and the micro actuator is a piezoelectric ceramic drive unit or a MEMS actuator;

[0018] The valve body is arranged in the conduction pipeline, and the valve body is provided with an air outlet;

[0019] The valve flap is provided with an elastic sealing layer, and the valve flap is movably arranged at the air outlet of the valve body to open or close the air outlet;

[0020] The micro actuator is electrically connected to the control system. The control system sends signals to the micro actuator, which drives the valve flap to swing, adjusts the opening degree of the air vent, and changes the flow rate of the high-temperature gas in the conduction pipeline.

[0021] The opening and closing degree of the valve flap is accurately controlled by a micro actuator (such as a piezoelectric ceramic drive unit or a MEMS actuator), so as to dynamically adjust the flow rate of the high-temperature gas in the conduction pipeline.

[0022] This precise adjustment can optimize the heat recovery efficiency according to the real-time temperature change, make the heat transfer faster, and improve the energy efficiency of the whole heat pump system.

[0023] A MEMS or piezoelectric ceramic drive unit is used as the micro actuator. These technologies have the characteristics of high response speed and low power consumption, and can respond to the signals of the control system within milliseconds.

[0024] This fast response characteristic enables the system to adapt to the changes in the temperature, pressure and flow rate of the hot air in real time, and ensures that an efficient heat exchange state can be maintained under different working conditions.

[0025] The elastic sealing layer at the edge of the valve flap effectively reduces gas leakage, ensures that the air flow flows along the set path, and improves the heat transfer efficiency.

[0026] Since the opening and closing of the valve flap are precisely controlled, the heat energy loss caused by air flow fluctuation or pressure instability can be avoided, thus improving the stability and reliability of the whole heat pump system.

[0027] This structure is linked with the control system. Through real-time data feedback (such as temperature, flow rate, etc.), the opening degree of the air vent can be adaptively adjusted, so that the flow rate of the hot air in the conduction pipeline is always in the best state.

[0028] Combined with an adaptive algorithm, the working states of the electronic expansion valve, compressor and fan are further optimized, unnecessary energy consumption is reduced, and energy conservation and consumption reduction are achieved.

[0029] Further, the variable flow guiding module includes a flow guiding plate, a rotating bracket and a motor. The rotating bracket is arranged in the conduction pipeline. The flow guiding plate is a high-temperature resistant flow guiding plate made of lightweight materials. The flow guiding plate is arranged on the rotating bracket, and the motor is connected to the rotating bracket;

[0030] The motor is electrically connected to the control system. When the motor works, it drives the flow guiding plate to swing through the rotating bracket, so as to adjust the angle of the flow guiding plate relative to the pipeline axis, so as to form a local contraction and streamline deflection area in the conduction pipeline, thereby promoting the transformation of the high-temperature gas from the original laminar flow state to the local turbulent flow state.

[0031] Adjusting the angle between the deflector and the axis of the conduction pipeline can form local contraction and streamline deflection regions within the pipeline, converting the originally relatively stable laminar flow into local turbulent flow. Under turbulent flow conditions, the contact and mixing between the gas and the pipeline wall are more sufficient, thus significantly improving the heat transfer efficiency and helping to transfer the thermal energy of the high-temperature gas to the heat release device more quickly.

[0032] The motor drives the rotating bracket to enable the deflector to swing in real time and adjust its angle, realizing the dynamic control of the air flow state. This device is electrically connected to the control system and can automatically adjust the position of the deflector according to real-time temperature and flow data, enabling the system to maintain the best heat transfer state under different working conditions and improving the operation efficiency and stability of the entire heat pump energy-saving system.

[0033] By promoting the transformation of high-temperature gas from laminar flow to turbulent flow, the heat recovery and transfer efficiency are improved, and the energy consumption of the system can be reduced. At the same time, more efficient heat exchange means that the heat pump system does not need to work at a high load for a long time to achieve the preheating effect, thus extending the service life of the equipment and reducing energy loss.

[0034] Furthermore, it also includes an adaptive algorithm module. The control system includes temperature sensors and a circuit board. The temperature sensors are respectively arranged at the air inlet, air outlet, and air duct, and the temperature sensors are electrically connected to the circuit board;

[0035] The adaptive algorithm module is electrically connected to the circuit board. The adaptive algorithm module collects the temperature data provided by the temperature sensors in real time and dynamically adjusts the opening of the electronic expansion valve, the operating frequency of the compressor, and the rotation speed of the first fan according to the temperature data;

[0036] The microelectromechanical control element is a sensor based on the piezoresistive effect or thermopile principle.

[0037] The adaptive algorithm module can immediately reflect the operating state of the system by collecting the temperature data provided by the temperature sensors at the air inlet, air outlet, and air duct in real time. Based on these data, the module dynamically adjusts the opening of the electronic expansion valve, the operating frequency of the compressor, and the rotation speed of the first fan, enabling the system to quickly respond to load changes and always maintain the best operating state.

[0038] The dynamic adjustment enables the heat pump system to accurately control the refrigerant flow rate and the operation of the compressor according to the real-time temperature, thereby achieving the optimal temperature for preheating the air, enhancing the heat exchange effect between the condenser and the external air, reducing energy consumption, and improving the energy-saving effect of the overall system.

[0039] Adopting a microelectromechanical control element based on the piezoresistive effect or thermopile principle ensures high-precision and fast-response temperature measurement, thereby providing accurate data support for the adaptive algorithm, making the entire control link more reliable and refined, and further improving the stability and safety of the system.

[0040] Through the close connection between the adaptive algorithm module and the control system and the circuit board, the entire heat pump energy-saving system realizes intelligent and automated operation. Users can achieve efficient, stable, and energy-saving heat recovery and utilization without frequent intervention, reducing operation and maintenance costs.

[0041] The second object of the present invention is achieved as follows:

[0042] An industrial drum dryer further includes a machine shell, a drum, a driving device, and an emergency stop controller. The machine shell is provided with the air duct, the drum is arranged in the air duct, the driving device is arranged in the machine shell and connected to the drum, the driving device is electrically connected to the control system, and the driving device drives the drum to rotate when working;

[0043] The machine shell is provided with a clothes inlet corresponding to the position of the drum, and a door panel is arranged at the position of the clothes inlet of the machine shell. The door panel opens or closes the clothes inlet;

[0044] The emergency stop controller is arranged on the machine shell, the emergency stop controller is electrically connected to the circuit board, and the emergency stop controller disconnects the main power supply through the circuit board.

[0045] The emergency stop controller is electrically connected to the circuit board and can quickly disconnect the main power supply when an abnormal situation is detected, ensuring the safety of the equipment and users.

[0046] The setting of the door panel effectively prevents misoperation or accidental opening of the clothes inlet during the operation of the equipment, thereby further improving the operation safety.

[0047] The drum is arranged in the air duct, and the driving device drives the drum to rotate to achieve efficient drying;

[0048] The opened clothes inlet facilitates users to load and unload clothes, and the door panel can be flexibly opened and closed according to needs, ensuring the normal operation of the equipment and facilitating user operation.

[0049] An air duct is arranged in the machine shell, which can promote air flow, enhance the hot air transfer effect, and ensure the drying efficiency;

[0050] The driving device is electrically connected to the control system to achieve precise control of the rotation of the drum, improving the operation stability and energy-saving effect of the system.

[0051] In summary, through the reasonable configuration of the air duct, the driving device, the clothes inlet, and the emergency stop controller, the design of this industrial drum dryer not only ensures the efficient drying and convenient operation of the equipment, but also provides a reliable guarantee in terms of safety, with high overall performance and practical value.

[0052] The second object of the present invention can also be solved by the following technical measures:

[0053] Further, it also includes a fluff collector for collecting fluff particles in the high-temperature gas. The fluff collector includes a tray and a filter screen;

[0054] The tray is provided with a plurality of guide grooves for guiding fluff particles and an aggregation area for guiding fluff particles, and the guide grooves and the aggregation area are communicated;

[0055] The filter screen includes a coarse filter layer for intercepting larger fluff particles and a fine filter layer for intercepting fine fluff and dust particles;

[0056] The tray is detachably arranged on the casing and close to the exhaust port, the filter screen is detachably arranged on the casing, the inlet of the filter screen is communicated with the tray, the outlet of the filter screen is communicated with the inlet of the heat receiver, and the hot air enters the heat receiver through the tray and the filter screen.

[0057] Adopting the structure of a tray and a double-layer filter screen, with guide grooves and an aggregation area arranged in the tray, it can effectively guide and concentrate the fluff particles in the high-temperature gas. The coarse filter layer first intercepts larger particles, and the fine filter layer further intercepts fine fluff and dust, ensuring the cleanliness of the gas at the inlet of the heat receiver and avoiding the decrease in heat exchange efficiency caused by fluff accumulation.

[0058] By timely collecting and intercepting fluff particles, it is possible to prevent fluff from accumulating inside the equipment, reduce the risk of blockage or increased thermal resistance caused by dust accumulation, thereby extending the service life of the equipment and maintaining the stable operation of the heat pump system. At the same time, both the tray and the filter screen are of detachable structure, which is convenient for regular cleaning and replacement, reducing the maintenance cost.

[0059] Effective fluff interception reduces the interference of impurities in the high-temperature gas, keeps the hot air in a relatively stable flow state before entering the heat receiver, which is conducive to forming an ideal local turbulent state in the conduction pipeline subsequently, improving the heat transfer efficiency, and realizing more efficient heat energy recovery and utilization.

[0060] Further, it also includes an automatic fluff scraping device, a fluff blocking device and a fluff collection bag. The tray is provided with a fluff discharge port at the bottom corresponding to the aggregation area;

[0061] The automatic fluff scraping device includes a micro motor, a transmission component, a scraper and a weight sensor. The scraper is slidably arranged in the aggregation area of the tray. The micro motor and the transmission component are arranged outside the tray. The transmission component is respectively connected to the micro motor and the scraper, and the micro motor is electrically connected to the circuit board;

[0062] The weight sensor is arranged at the bottom of the accumulation area of the tray and beside the fluff discharge outlet. When the weight sensor detects that the accumulated weight of the fluff reaches a predetermined threshold, the weight sensor transmits a detection signal to the circuit board, and the circuit board controls the operation of the micro-motor. The micro-motor drives the scraper to slide along the accumulation area of the tray through a transmission component, and pushes the fluff to the fluff discharge outlet.

[0063] The fluff blocking device includes a baffle and a cylinder. The baffle is arranged on the tray in a sliding manner. The cylinder is arranged on the tray and connected to the baffle. The cylinder is electrically connected to the circuit board, and the circuit board controls the operation of the cylinder. The cylinder drives the baffle to slide, and the baffle slides to open or close the fluff discharge outlet.

[0064] The fluff collection bag is detachably hung on the tray, and the inlet of the fluff collection bag is communicated with the fluff discharge outlet.

[0065] The weight sensor is used to monitor the accumulated amount of fluff in the tray in real time. When the accumulation reaches the preset threshold, the micro-motor is automatically triggered, and the scraper is driven to slide along the accumulation area of the tray through the transmission component, and the fluff is effectively pushed to the preset fluff discharge outlet, so as to realize automatic continuous cleaning, avoid the influence of excessive fluff accumulation on the air flow and heat exchange efficiency, and reduce the manual maintenance frequency.

[0066] The fluff blocking device is intelligently controlled by a baffle driven by a cylinder, and can open or close the fluff discharge outlet when needed according to the system state, ensure that the scraped fluff smoothly enters the fluff collection bag hung below, and prevent the uncleaned fluff from entering the air duct or heat receiver again, so as to keep the internal air flow smooth and the heat exchange efficiency stable.

[0067] The fluff collection bag installed in a detachable manner makes the collected fluff convenient for centralized treatment and regular replacement, effectively reduces equipment failures caused by fluff blockage, thereby improves the overall operation stability and energy-saving effect of the system, and at the same time reduces the maintenance cost.

[0068] Furthermore, it further includes a clothing cooling module. The clothing cooling module includes a cooling pipeline and a cold air nozzle. A second fan is arranged at the inlet of the cooling pipeline. The inlet of the cooling pipeline is close to the evaporator. The outlet of the cooling pipeline is communicated with the cold air nozzle. A one-way valve is built in the cold air nozzle. The cold air nozzle is communicated with the air duct, and the outlet of the one-way valve is communicated with the air duct.

[0069] The second fan is electrically connected to the circuit board. The control system starts the second fan 10 minutes before the heat pump system stops working. The second fan sucks the cold generated by the evaporator into the cooling pipeline for storage. After the heat pump system stops working, the second fan transmits the cold in the cooling pipeline into the air duct along the cold air nozzle and the one-way valve, realizing the rapid cooling of the clothing. The control system closes the second fan 5 minutes after the heat pump system stops working.

[0070] By starting the second fan 10 minutes before the heat pump system stops working, the cold generated by the evaporator is inhaled into the cooling pipeline in advance for storage, so that after the heat pump system stops working, cold air can still be quickly provided, realizing smoother and more efficient cooling of clothes, and avoiding the influence of high-temperature residues on clothes and users.

[0071] This design uses the low-temperature cold during the operation of the heat pump system for pre-storage, avoiding the direct loss of cold after the heat pump stops, thereby improving the energy utilization rate of the system, reducing cooling energy consumption, and improving the overall energy-saving effect of the dryer.

[0072] The cold air nozzle is connected to the air duct, and the flow direction of the cold air is controlled by a one-way valve to ensure that the cold does not flow back, so as to ensure that the cooling air can enter the air duct stably and directionally, improving the uniformity and effectiveness of clothes cooling.

[0073] Through the intelligent adjustment of the control system, the start and stop times of the second fan are accurately controlled, enabling the cooling process to be seamlessly connected with the drying process, avoiding energy consumption waste or insufficient cooling caused by starting too early or too late, while reducing the need for user intervention and improving the intelligence level and user experience of the equipment.

[0074] Furthermore, the clothes cooling module further includes a cold storage box body, a semiconductor refrigeration sheet is arranged inside the cold storage box body, the cold storage box body is provided with a cold air inlet and a cold air outlet, a third fan and an air inlet valve are arranged at the cold air inlet, a fourth fan and an air outlet valve are arranged at the cold air outlet, and the semiconductor refrigeration sheet, the air inlet valve, the air outlet valve, the third fan and the fourth fan are respectively electrically connected to the circuit board;

[0075] The cold air inlet of the cold storage box body is communicated with the outlet of the cooling pipeline, and the cold air outlet of the cold storage box body is communicated with the cold air nozzle;

[0076] The control system starts the second fan and the third fan and opens the air inlet valve 10 minutes before the heat pump system stops working. The second fan and the third fan inhale the cold air near the evaporator into the cold storage box body through the cooling pipeline and the cold air inlet for storage, and at the same time, the semiconductor refrigeration sheet cools the cold air in the cold storage box body;

[0077] After the heat pump system stops working, the control system automatically closes the air inlet valve. If the control system monitors that the temperature of the air duct exceeds the preset threshold, the control system starts the fourth fan and opens the air outlet valve, and the cold air in the cold storage box body enters the cold air nozzle along the cold air outlet under the action of the fourth fan and is transmitted into the air duct through the one-way valve, thereby reducing the temperature of the air duct.

[0078] When the heat pump system is still running, the second fan and the third fan work together to suck the low-temperature cold air near the evaporator into the cold storage box through the cooling pipeline, and further cool it through the thermoelectric cooler, so that the cold air can be effectively stored, ensuring that low-temperature air can still be continuously supplied after the heat pump stops.

[0079] The control system starts the fan and opens the air inlet valve 10 minutes before the heat pump system stops working in advance to realize the pre-collection of cold air; after shutdown, the fourth fan is started in real time according to the temperature of the air passage and the air outlet valve is opened to transport the stored low-temperature cold air to the air passage, realizing rapid cooling, reducing energy waste and improving the overall system energy efficiency.

[0080] The cold storage box adopts an inner and outer box structure and an internal thermoelectric cooler to ensure the stability of the cold air storage temperature, and quickly transports low-temperature air through the cold air nozzle and the one-way valve when needed, effectively reducing the temperature of the air passage, ensuring the rapid cooling of the clothes after drying, and preventing the user from being scalded by high temperature.

[0081] The multi-stage fan and valve combination structure is linked with the intelligent control module to ensure the stable direction of cold air transmission and the efficient and continuous cooling process. At the same time, the electrical connection of each component realizes remote monitoring and automatic adjustment, making the entire clothes cooling module have the characteristics of high reliability and easy maintenance.

[0082] Further, the cold storage box includes an inner box and an outer box. A low-thermal-conductivity thermal insulation material is filled between the inner box and the outer box or a vacuum layer is provided. The inner wall of the inner box is covered with a reflective heat insulation film. The thermoelectric cooler is arranged on the outer surface of the side wall of the inner box in an embedded installation manner, and the cooling surface of the thermoelectric cooler is closely attached to the inner wall of the inner box through a high-thermal-conductivity heat dissipation adhesive, a metal thermal interface material or a customized cooling substrate.

[0083] A low-thermal-conductivity thermal insulation material is used or a vacuum layer is provided between the inner box and the outer box, significantly reducing the heat transfer through the box body, ensuring that the low-temperature state is maintained in the cold storage box for a long time, and improving the cold air storage effect.

[0084] The inner wall of the inner box is covered with a reflective heat insulation film, effectively reflecting external radiant heat and further preventing heat intrusion.

[0085] The thermoelectric cooler is arranged on the outer surface of the side wall of the inner box in an embedded installation manner, so that the cold quantity can be evenly distributed in the inner box, avoiding local temperature difference and ensuring more balanced cold air storage.

[0086] The cooling surface of the cooler is closely attached to the inner wall of the inner box through a high-thermal-conductivity heat dissipation adhesive, a metal thermal interface material or a customized cooling substrate, ensuring the maximization of heat transfer efficiency, reducing the thermal resistance, and quickly transferring the cold quantity to the inner box.

[0087] This integrated design can not only effectively store cold air at low temperature, but also stably supply cold air when the heat pump system stops, so as to achieve rapid cooling, protect the safety of equipment and users.

[0088] The combination of close thermal contact and excellent heat insulation measures further reduces the system energy consumption and improves the working efficiency and stability of the entire clothing cooling module.

[0089] The beneficial effects of the present invention are as follows:

[0090] In the present invention, the high-temperature waste gas generated by the heat pump is transmitted to the heat release device through the heat receiver and the conduction pipeline, realizing the effective recovery and recycling of waste heat. By using the microelectromechanical control element to intelligently adjust the air flow state, the surrounding air can be preheated before the hot air enters the condenser, thus greatly reducing the energy consumption and improving the overall system energy efficiency.

[0091] In the present invention, the hot air in the air duct is used to quickly dry the clothes, and then the specially designed clothing cooling module is used to quickly cool the dried clothes. The clothing cooling module collects and stores the cold air at low temperature near the evaporator in advance through the second fan and the cold storage box, and quickly conveys the cold air to the air duct through the cooling pipeline and the cold air nozzle after the heat pump stops working, ensuring that the temperature of the clothes drops rapidly and protecting the safety of users.

[0092] The fluff collector equipped in the present invention adopts a tray and a layered filter screen structure. The fluff particles are effectively guided into the filter screen through the guide grooves and the aggregation area in the tray, and the large particles and fine fluff and dust are intercepted by the coarse filter layer and the fine filter layer respectively. At the same time, the automatic fluff scraping device cooperates with the weight sensor to realize automatic fluff scraping and collection, ensuring smooth internal air flow, unaffected heat exchange efficiency, and reduced maintenance frequency.

[0093] In the present invention, the control system collects the temperature data at the air inlet, the air outlet and in the air duct in real time through the adaptive algorithm module, and dynamically adjusts the opening of the electronic expansion valve, the operating frequency of the compressor and the rotation speed of the first fan according to the changes, realizing accurate and real-time system optimization. Moreover, the microelectromechanical control element (based on the piezoresistive effect or the thermopile principle) monitors and controls the air flow state to ensure the formation of local turbulence in the conduction pipeline, thereby improving the heat transfer efficiency and system stability.

[0094] In the present invention, the industrial drum dryer is also provided with an emergency stop controller, a door panel, and an intelligent fluff collection and automatic cleaning device to ensure that the equipment can be quickly powered off in case of abnormal situations, protecting the safety of the equipment and the operators. In addition, the detachable structure design makes the equipment maintenance and cleaning work more convenient, reduces the operation cost, and improves the safety and user experience of the overall system. Description of the Drawings

[0095] Figure 1 Schematic diagram of an industrial drum dryer.

[0096] Figure 2 Schematic diagram of another angle of an industrial drum dryer.

[0097] Figure 3 Schematic diagram of the separation of the tray, filter screen and casing of an industrial drum dryer.

[0098] Figure 4 Schematic diagram of the positional relationship between the heat recovery device and the air duct.

[0099] Figure 5 Schematic diagram of the heat receiver.

[0100] Figure 6 Schematic diagram of the conduction pipeline.

[0101] Figure 7 Schematic diagram of the tray.

[0102] Figure 8 Schematic diagram of the clothing cooling module.

[0103] Figure 9 Schematic diagram of the circuit principle. Detailed implementation manner

[0104] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0105] Embodiment, in combination with Figures 1 to 9 As shown, a heat pump energy-saving system includes at least two sets of heat pump systems 2, a control system 6 and a heat recovery device 3, and further includes an air duct 1. The air duct 1 is provided with an air inlet 11 and an air outlet 12, and a first fan 13 is arranged at the air inlet 11;

[0106] The heat pump system 2 includes a compressor 21, an evaporator 22, a condenser 23 and an electronic expansion valve. The condenser 23 is close to the air inlet 11;

[0107] The heat recovery device 3 includes a heat receiver 31, a conduction pipeline 32 and a heat release device 33. The heat receiver 31 is internally provided with a microelectromechanical control element 311. The heat receiver 31 is installed at the air outlet 12. The conduction pipeline 32 is internally provided with an adjustable micro valve 4 for adjusting the flow rate and a variable diversion module 5 for adjusting the flow rate. The heat release device 33 is close to the air inlet 11 and is located above the condenser 23. The heat receiver 31 and the heat release device 33 are connected through the conduction pipeline 32;

[0108] The heat pump system 2, the first fan 13, the microelectromechanical control element 311, the micro valve 4 and the variable diversion module 5 are respectively electrically connected to the control system 6;

[0109] When the heat pump system 2 operates, the condenser 23 heats the surrounding air to form hot air. The hot air is guided by the first fan 13 to form hot wind and enters the air duct 1 along the air inlet 11. Finally, the hot wind is discharged from the air outlet 12 and received by the heat receiver 31, and the hot wind is guided into the conduction pipeline 32. At the same time, the microelectromechanical control element 311 detects the hot wind, and the microelectromechanical control element 311 adjusts the micro-valve 4 and the variable flow guiding module 5, so that the flow rate of the high-temperature gas in the conduction pipeline 32 is increased and local turbulence is formed in the pipeline, enabling the hot wind to be quickly transferred from the heat receiver 31 to the heat release device 33;

[0110] The heat release device 33 releases hot wind to the surrounding of the condenser 23 for preheating the air around the condenser 23. The condenser 23 quickly forms hot air by heating the preheated air. The hot air is guided by the first fan 13 to form hot wind and enters the air duct 1 along the air inlet 11, and the cycle repeats.

[0111] Refer to Figure 6 , further, the adjustable micro-valve 4 includes a valve body 41, a valve flap 42 and a micro actuator 43, and the micro actuator 43 is a piezoelectric ceramic drive unit or a MEMS actuator;

[0112] The valve body 41 is arranged in the conduction pipeline 32, and the valve body 41 is provided with an air port 411;

[0113] The valve flap 42 is provided with an elastic sealing layer 421, and the valve flap 42 is movably arranged at the air port 411 of the valve body 41 to open or close the air port 411;

[0114] The micro actuator 43 is electrically connected to the control system 6. The control system 6 sends a signal to the micro actuator 43, and the micro actuator 43 pushes the valve flap 42 to swing, adjusts the opening and closing degree of the air port, and changes the flow rate of the high-temperature gas in the conduction pipeline 32.

[0115] Further, the variable flow guiding module 5 includes a flow guiding plate 51, a rotating bracket 52 and a motor 53. The rotating bracket 52 is arranged in the conduction pipeline 32. The flow guiding plate 51 is a high-temperature resistant flow guiding plate 51 made of a lightweight material. The flow guiding plate 51 is arranged on the rotating bracket 52, and the motor 53 is connected to the rotating bracket 52;

[0116] The motor 53 is electrically connected to the control system 6. When the motor 53 operates, it drives the flow guiding plate 51 to swing through the rotating bracket 52, thereby adjusting the angle of the flow guiding plate 51 relative to the pipeline axis to form a local contraction and streamline deflection area in the conduction pipeline 32, so as to promote the transformation of the high-temperature gas from the original laminar flow state to the local turbulent flow state;

[0117] Further, it further includes an adaptive algorithm module 63. The control system 6 includes a temperature sensor 61 and a circuit board 62. The temperature sensor 61 is respectively arranged at the air inlet 11, the air outlet 12 and the air duct 1, and the temperature sensor 61 is electrically connected to the circuit board 62;

[0118] The adaptive algorithm module 63 is electrically connected to the circuit board 62. The adaptive algorithm module 63 collects the temperature data provided by the temperature sensor 61 in real time, and dynamically adjusts the opening degree of the electronic expansion valve, the operating frequency of the compressor 21 and the rotation speed of the first fan 13 according to the temperature data;

[0119] The microelectromechanical control element 311 is a sensor based on the piezoresistive effect or the thermopile principle.

[0120] An industrial drum dryer further includes a machine shell 7, a drum 71, a driving device 72 and an emergency stop controller 73. The machine shell 7 is provided with the air duct 1. The drum 71 is arranged in the air duct 1. The driving device 72 is arranged in the machine shell 7 and connected to the drum 71. The driving device 72 is electrically connected to the control system 6, and the driving device 72 operates to drive the drum 71 to rotate;

[0121] The machine shell 7 is provided with a clothes inlet 711 corresponding to the position of the drum 71. The machine shell 7 is provided with a door panel 712 corresponding to the clothes inlet 711, and the door panel 712 opens or closes the clothes inlet 711;

[0122] The emergency stop controller 73 is arranged on the machine shell 7. The emergency stop controller 73 is electrically connected to the circuit board 62, and the emergency stop controller 73 disconnects the main power supply through the circuit board 62.

[0123] Refer to Figure 7 , further, it further includes a fluff collector 8 for collecting fluff particles in the high-temperature gas. The fluff collector 8 includes a tray 81 and a filter net 82;

[0124] The tray 81 is provided with a plurality of guide grooves 811 for guiding fluff particles and an aggregation area 812 for guiding fluff particles, and the guide grooves 811 are communicated with the aggregation area 812;

[0125] The filter net 82 includes a coarse filter layer 821 for intercepting larger fluff particles and a fine filter layer 822 for intercepting fine fluff and dust particles;

[0126] The tray 81 is detachably arranged on the machine shell 7 and near the air outlet 12. The filter net 82 is detachably arranged on the machine shell 7. The inlet of the filter net 82 is communicated with the tray 81, and the outlet of the filter net 82 is communicated with the inlet of the heat receiver 31. The hot air enters the heat receiver 31 through the tray 81 and the filter net 82.

[0127] Further, it further includes an automatic fluff scraping device 9, a fluff blocking device 10 and a fluff collection bag 100. A fluff discharge port 813 is formed at the bottom position of the tray 81 corresponding to the aggregation area.

[0128] The automatic fluff scraping device 9 includes a micro motor 91, a transmission assembly 92, a scraper 93 and a weight sensor 94. The scraper 93 is arranged in a sliding manner in the aggregation area 812 of the tray 81. The micro motor 91 and the transmission assembly 92 are arranged outside the tray 81. The transmission assembly 92 is respectively connected to the micro motor 91 and the scraper 93. The micro motor 91 is electrically connected to the circuit board 62.

[0129] The weight sensor 94 is arranged at the bottom of the aggregation area 812 of the tray 81 and beside the fluff discharge port 813. When the weight sensor 94 detects that the cumulative weight of the fluff reaches a predetermined threshold, the weight sensor 94 transmits a detection signal to the circuit board 62. The circuit board 62 controls the micro motor 91 to work. The micro motor 91 drives the scraper 93 to slide along the aggregation area 812 of the tray 81 through the transmission assembly 92, and pushes the fluff to the fluff discharge port 813.

[0130] The fluff blocking device 10 includes a baffle 101 and a cylinder 102. The baffle 101 is arranged in a sliding manner on the tray 81. The cylinder 102 is arranged on the tray 81 and connected to the baffle 101. The cylinder 102 is electrically connected to the circuit board 62. The circuit board 62 controls the cylinder 102 to work. The cylinder 102 drives the baffle 101 to slide, and the baffle 101 slides to open or close the fluff discharge port 813.

[0131] The fluff collection bag 100 is detachably suspended on the tray 81, and the inlet of the fluff collection bag 100 is communicated with the fluff discharge port 813.

[0132] Refer to Figure 8 , further, it further includes a clothing cooling module 20. The clothing cooling module 20 includes a cooling pipeline 201 and a cold air nozzle 202. A second fan 203 is arranged at the inlet of the cooling pipeline 201. The inlet of the cooling pipeline 201 is close to the evaporator 22. The outlet of the cooling pipeline 201 is communicated with the cold air nozzle 202. A one-way valve 204 is built in the cold air nozzle 202. The cold air nozzle 202 is communicated with the air channel 1, and the outlet of the one-way valve 204 is communicated with the air channel 1.

[0133] The second fan 203 is electrically connected to the circuit board 62. The control system 6 starts the second fan 203 10 minutes before the heat pump system 2 stops working. The second fan 203 sucks the cold generated by the evaporator 22 into the cooling pipeline 201 for storage. After the heat pump system 2 stops working, the second fan 203 transfers the cold in the cooling pipeline 201 into the air duct 1 along the cold air nozzle 202 and the one-way valve 204, realizing rapid cooling of the clothes. The control system 6 turns off the second fan 203 5 minutes after the heat pump system 2 stops working.

[0134] Refer to Figure 8 , further, the clothes cooling module 20 further includes a cold storage box body 30. A semiconductor refrigeration sheet 301 is arranged inside the cold storage box body 30. The cold storage box body 30 is provided with a cold air inlet 302 and a cold air outlet 303. A third fan 304 and an air inlet valve 305 are arranged at the cold air inlet 302. A fourth fan 306 and an air outlet valve 307 are arranged at the cold air outlet 303. The semiconductor refrigeration sheet 301, the air inlet valve 305, the air outlet valve 307, the third fan 304 and the fourth fan 306 are respectively electrically connected to the circuit board 62;

[0135] The cold air inlet 302 of the cold storage box body 30 is communicated with the outlet of the cooling pipeline 201, and the cold air outlet 303 of the cold storage box body 30 is communicated with the cold air nozzle 202.

[0136] Further, a connecting pipeline 200 is additionally arranged between the cold air outlet 303 of the cold storage box body 30 and the cold air nozzle 202. One end of the connecting pipeline 200 is communicated with the cold air outlet 303, and the other end of the connecting pipeline 200 is communicated with the cold air nozzle 202.

[0137] The control system 6 starts the second fan 203 and the third fan 304 and opens the air inlet valve 305 10 minutes before the heat pump system 2 stops working. The second fan 203 and the third fan 304 suck the cold air near the evaporator 22 into the cold storage box body 30 through the cooling pipeline 201 and the cold air inlet 302 for storage. At the same time, the semiconductor refrigeration sheet 301 cools the cold air in the cold storage box body 30;

[0138] After the heat pump system 2 stops working, the control system 6 automatically closes the air inlet valve 305. If the control system 6 monitors that the temperature of the air duct 1 exceeds the preset threshold, the control system 6 starts the fourth fan 306 and opens the air outlet valve 307. The cold air in the cold storage box body 30 enters the cold air nozzle 202 and the one-way valve 204 along the cold air outlet 303 and the connecting pipeline 200 under the action of the fourth fan 306, thereby reducing the temperature of the air duct 1.

[0139] Further, the cold storage box body 30 includes an inner box body 308 and an outer box body 309. A low thermal conductivity heat insulation material is filled or a vacuum layer 40 is provided between the inner box body 308 and the outer box body 309. The inner wall of the inner box body 308 is covered with a reflective heat insulation film 401. The semiconductor refrigeration sheet 301 is arranged on the outer surface of the side wall of the inner box body 308 in an embedded installation manner, and the refrigerating surface of the semiconductor refrigeration sheet 301 is closely attached to the inner wall of the inner box body 308 through a high thermal conductivity heat dissipation adhesive, a metal thermal interface material or a customized cooling substrate.

[0140] The condenser 23 in the heat pump system 2 is located near the air inlet 11 of the casing 7. When the compressor 21, the evaporator 22, the condenser 23 and the electronic expansion valve work together, the condenser 23 heats the surrounding air to form high-temperature hot air.

[0141] The first fan 13 guides the external air into the air duct 1, so that the hot air flows evenly through the rotating drum 71 placed in the air duct 1, thereby quickly evaporating the moisture in the clothes and achieving efficient drying.

[0142] After the hot air generated during the drying process is discharged from the air duct 1, it is captured by the heat receiver 31 installed at the exhaust port 12.

[0143] The built-in microelectromechanical control element 311 (based on the piezoresistive effect or the thermopile principle) detects the temperature of the hot air and automatically adjusts the adjustable microvalve 4 and the variable flow guiding module 5 embedded in the conduction pipeline 32, so that the flow rate of the high-temperature gas in the pipeline is increased and local turbulence is formed.

[0144] The hot air in the turbulent state is quickly transferred to the heat release device 33 located above the air inlet 11 and above the condenser 23. The released heat preheats the air entering the periphery of the condenser 23, forming an energy recovery closed loop, thereby reducing the overall energy consumption of the system.

[0145] This method realizes the rapid cooling of clothes by pre-collecting and storing low-temperature cold air and quickly transporting it to the air duct 1 after the heat pump system 2 stops working. The specific steps are as follows:

[0146] Pre-collection and storage stage

[0147] a. During the operation of the heat pump system 2, the low-temperature cold air generated by the evaporator 22 is sucked into the cooling pipeline 201 by the second fan 203 installed at the inlet of the cooling pipeline 201.

[0148] b. The inlet of the cooling pipeline 201 is close to the evaporator 22. The collected low-temperature cold air is transported along the pipeline to the outlet of the cooling pipeline 201, and the outlet of the cooling pipeline 201 is connected to the cold air inlet 302 of the cold storage box body 30.

[0149] c. Meanwhile, at the cold air inlet 302 of the cold storage box 30, a third fan 304 and an air inlet valve 305 are provided. The third fan 304 sucks the low-temperature cold air in the cooling pipeline 201 into the cold storage box 30 for storage.

[0150] d. The cold storage box 30 is internally provided with a thermoelectric cooler 301. The thermoelectric cooler 301 is arranged on the outer surface of the side wall of the inner box 308 in an embedded manner. Its refrigerating surface is closely attached to the inner wall of the inner box 308 through a highly thermally conductive heat dissipation glue, a metal thermal interface material or a customized cooling substrate, effectively further reducing the temperature of the stored cold air.

[0151] e. The control system 6 starts the second fan 203 and the third fan 304 10 minutes before the heat pump system 2 stops working, and opens the air inlet valve 305 to collect and store the low-temperature cold air in advance.

[0152] Cooling startup stage

[0153] a. After the heat pump system 2 stops working, the control system 6 automatically closes the air inlet valve 305 of the cold storage box 30 to prevent external hot air from entering.

[0154] b. If the control system 6 monitors that the temperature of the air channel 1 exceeds the preset safety threshold, it starts the fourth fan 306 and opens the air outlet valve 307 at the cold air outlet 303 of the cold storage box 30.

[0155] c. The cold air outlet 303 of the cold storage box 30 is connected to the inlet of the cooling pipeline 201. At this time, the fourth fan 306 pushes the low-temperature cold air stored in the cold storage box 30 and transports it to the cold air nozzle 202 through the cooling pipeline 201.

[0156] Cold air transportation and clothing cooling stage

[0157] a. The outlet of the cooling pipeline 201 is connected to the cold air nozzle 202 equipped with a one-way valve 204. The one-way valve 204 ensures that the low-temperature cold air only enters the air channel 1 in a predetermined direction.

[0158] b. The cold air nozzle 202 introduces the low-temperature cold air into the air channel 1, quickly mixes with the hot air in the air channel 1, and promotes the rapid reduction of the temperature on the surface of the clothes in the drum 71.

[0159] c. The control system 6 automatically closes the second fan 203 5 minutes after the heat pump stops working to ensure that the cooling process is completed in a short time while maintaining the efficient use of energy.

[0160] This method pre-collects and stores low-temperature cold air during the operation of the heat pump system 2, and uses the thermoelectric cooler 301 to further lower the storage temperature, ensuring that continuous and sufficient low-temperature cold air can still be provided after the heat pump stops, so as to achieve rapid cooling of clothes.

[0161] The interlocking control of the multi-stage fan and valves (inlet valve 305, outlet valve 307 and check valve 204) ensures the directional delivery of cold air to the air duct 1, avoids the problem of uneven mixing of cold air and hot air, and improves the cooling efficiency.

[0162] The precise timing control of the intelligent control system 6 (such as starting pre-collection 10 minutes in advance and turning off the fan 5 minutes after shutdown) makes the cooling process efficient and stable, ensuring user safety and reducing energy consumption.

[0163] Efficient interception and automatic cleaning:

[0164] During the drying process, the fluff particles carried by the high-temperature hot air are guided through the exhaust port 12 to the fluff collector 8 set at this position.

[0165] The fluff collector 8 is composed of a tray 81 and a double-layer filter screen 82. The tray 81 is provided with a guide groove 811 and an aggregation area 812 to guide and concentrate the fluff; the outer layer of the filter screen 82 is a coarse filter layer 821 to intercept large fluff particles, and the inner layer is a fine filter layer 822 to intercept fine fluff and dust.

[0166] When the weight sensor 94 (installed at the bottom of the aggregation area 812 of the tray 81, near the fluff discharge port 813) detects that the fluff accumulation reaches the preset threshold, the control system 6 triggers the automatic fluff scraping device 9 through the circuit board 62.

[0167] The micro-motor 91 drives the transmission component 92 and the scraper 93 to slide along the aggregation area 812 of the tray 81, pushing the fluff to the preset fluff discharge port 813, and then the fluff blocking device 10 (controlled by the baffle 101 and the cylinder 102) adjusts the opening and closing to ensure that the fluff smoothly enters the suspended fluff collection bag 100, realizing automatic collection and cleaning and reducing the maintenance workload.

[0168] Real-time monitoring and dynamic adjustment:

[0169] Multiple temperature sensors 61 in the system are respectively arranged at the air inlet 11, the exhaust port 12, the air duct 1 and other key parts, and their data are collected in real time by the circuit board 62 of the control system 6 and the integrated adaptive algorithm module 63.

[0170] The adaptive algorithm module 63 utilizes this data to dynamically adjust the opening degree of the electronic expansion valve, the operating frequency of the compressor 21, and the rotational speeds of the first fan 13 (as well as the second fan 203, the third fan 304, and the fourth fan 306), ensuring that each component always operates in an optimal state, guaranteeing both the drying and cooling efficiency and achieving the minimization of energy consumption.

[0171] Through the closed-loop heat exchange system composed of the heat receiver 31, the conduction pipeline 32, and the heat release device 33, the waste heat during the drying process is recovered and reused. It not only preheats the air entering the condenser 23 but also assists the clothing cooling module 20 in providing cold air, further improving the overall energy efficiency and environmental friendliness of the system.

[0172] In this embodiment, the heat pump energy-saving system adopts at least two sets of heat pump systems 2. The condenser 23 is arranged near the air inlet 11 of the machine shell 7, and the rotational speed of the first fan 13 is controlled within the range of 1200 - 1500 rpm to ensure the formation of sufficient hot air.

[0173] The micro-electromechanical control element 311 adopts a piezoelectric ceramic drive unit with a response time less than 10 milliseconds. The sensors built-in based on the piezoresistive effect or the thermopile principle have an accuracy of ±0.5°C, and they collect the temperature data of the air inlet 11, the air outlet 12, and the air duct 1 in real time to dynamically adjust the opening degree of the electronic expansion valve (adjustable from 0 to 100%), the operating frequency of the compressor 21, and the rotational speed of the first fan 13.

[0174] The high-temperature resistant lightweight flow guide plate 51 in the variable flow guide module 5 is installed on the rotating bracket 52, and its adjustment angle can be within the range of 0° - 45°. It is driven by a micro motor 91 electrically connected to the control system 6, thereby forming a local contraction and streamline deflection area in the conduction pipeline 32, converting the original laminar flow state into local turbulent flow, and improving the heat transfer efficiency.

[0175] The clothing cooling module 20 is equipped with a second fan 203 (rotational speed 1000 - 1300 rpm) and a cooling pipeline 201. Its inlet is close to the evaporator 22. The control system 6 starts the second fan 203 10 minutes before the heat pump system 2 stops working, sucks the low-temperature cold air generated by the evaporator 22 into the cooling pipeline 201 for storage, and operates for at least 5 minutes after the system stops. The cold quantity is stably introduced into the air duct 1 through the built-in one-way valve 204 to achieve rapid cooling of the clothing.

[0176] To further strengthen the cold air storage, the system is also equipped with a cold storage box 30. A low-thermal-conductivity thermal insulation material is filled between its inner and outer boxes 309 or a vacuum layer 40 is set to achieve a thermal insulation effect with a thermal conductivity lower than 0.001 W / (m·K). The volume of the inner box 308 is approximately 20 liters, and the inner wall is covered with a reflective heat insulation film 401.

[0177] Meanwhile, the semiconductor refrigeration chips 301 are evenly arranged on the outer surface of the side wall of the inner box body 308 in an embedded installation manner. Their refrigerating surfaces are closely attached to the inner wall of the inner box body 308 through high thermal conductivity heat dissipation glue, metal thermal interface materials or customized cooling substrates, further reducing the cold air temperature.

[0178] The overall system is precisely regulated through the intelligent adaptive algorithm module 63 to ensure that after the clothes are quickly dried, it operates efficiently using the recovered heat energy and pre-stored cold energy, achieving both efficient energy utilization and ensuring user safety and equipment stability.

[0179] In this embodiment, to achieve automatic control and timely trigger corresponding functions, two key threshold parameters are set, which are respectively used to judge the situations of fluff accumulation and air duct temperature exceeding the standard. Their specific ranges and setting methods are as follows:

[0180] The predetermined threshold of the accumulated fluff weight in the tray is set between approximately 80 grams and 120 grams. In this embodiment, the best reference value is 100 grams (allowing an error range of ±20 grams).

[0181] A weight sensor similar to an electronic scale is adopted to ensure that its output voltage or digital signal has a linear correspondence with the actual weight.

[0182] In the system calibration stage, the correction coefficient between the actual weight and the sensor output is obtained through multiple samplings, and then the target signal corresponding to 100 grams is stored in the program of the control system.

[0183] When the accumulated fluff weight signal detected by the weight sensor 94 reaches or exceeds this target signal (i.e., the voltage range corresponding to approximately 100 grams, allowing a fluctuation of ±10%-20%), the control system 6 triggers the automatic fluff scraping device 9 to start, thereby discharging the fluff from the tray 81, keeping the air flow smooth in the system and preventing the decline of heat exchange efficiency.

[0184] The preset threshold of the temperature of the air duct 1 is set between approximately 40°C and 50°C. In this embodiment, the best set value is 45°C (allowing an error range of ±5°C).

[0185] Multiple temperature sensors 61 (with an accuracy of approximately ±0.5°C) are arranged in the air duct 1. These temperature sensors 61 collect temperature data through analog-to-digital conversion and transmit it to the control system 6.

[0186] In the system calibration stage, statistical analysis is performed on the output of the temperature sensors 61, and 45°C is determined as the most suitable cooling start point to avoid scalding users due to high temperature.

[0187] The control system 6 compares the real-time temperature data with the set threshold value. When it monitors that the temperature of the air duct 1 exceeds 45 °C (the acceptable range is 40 °C to 50 °C), it automatically starts the fourth fan 306 and opens the air outlet valve 307, and releases the low-temperature cold air from the cold storage box body 30 into the air duct 1 to quickly reduce the temperature.

[0188] As used in the present invention, terms such as first and second do not represent any order, quantity or importance, but are only used for distinction.

[0189] As used in the present invention, terms such as a and an do not represent a limitation of quantity, but represent the existence of at least one of the mentioned objects. As used in the present invention, terms indicating orientation or position such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc. mean reflecting relative positions rather than absolute positions.

[0190] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A heat pump energy-saving system, comprising at least two heat pump systems, a control system and a heat recovery device, characterized in that: It also includes an air channel, the air channel is provided with an air inlet and an air outlet, and a first fan is provided at the air inlet; The heat pump system comprises a compressor, an evaporator, a condenser and an electronic expansion valve, wherein the condenser is close to the air inlet; The heat recovery and utilization device comprises a heat receiver, a conduction pipe and a heat releaser, wherein the heat receiver is equipped with a micro-electromechanical control element, the heat receiver is installed at the exhaust port, the conduction pipe is equipped with an adjustable micro-valve for adjusting the flow rate and a variable flow guide module for adjusting the flow rate, the heat releaser is close to the air inlet and located above the condenser, and the heat receiver and the heat releaser are connected through the conduction pipe; The heat pump system, the first fan, the micro-electromechanical control element, the micro-valve and the variable flow guide module are electrically connected to the control system respectively; When the heat pump system is working, the condenser heats the surrounding air to form hot air, which is guided by the first fan to form hot air and enter the wind channel along the air inlet. Finally, the hot air is discharged to the exhaust port and received by the heat receiver, which guides the hot air into the conduction pipe. At the same time, the micro-electromechanical control element detects the hot air, and the micro-electromechanical control element adjusts the microvalve and the variable flow guide module to increase the flow rate of the high-temperature gas in the conduction pipe and form local turbulence in the pipe, so that the hot air is quickly transferred from the heat receiver to the heat releaser; The heat releaser releases hot air to the vicinity of the condenser to preheat the air around the condenser. The condenser heats the preheated air to quickly form hot air. The hot air is guided by the first fan to form hot air and enter the wind channel along the air inlet, and the cycle repeats. The adjustable microvalve comprises a valve body, a valve flap and a micro-actuator, wherein the micro-actuator is a piezoelectric ceramic drive unit or a MEMS actuator; The valve body is arranged in the conducting pipe, and the valve body is provided with an air outlet; The valve flap is provided with an elastic sealing layer, and the valve flap is movably arranged at the air outlet of the valve body for opening or closing the air outlet; The micro-actuator is electrically connected to a control system. The control system sends a signal to the micro-actuator. The micro-actuator pushes the valve flap to swing, adjusts the opening and closing degree of the air outlet, and changes the flow rate of the high-temperature gas in the conduction pipeline.

2. The heat pump energy-saving system according to claim 1, characterized in that: The variable flow guide module comprises a flow guide plate, a rotating bracket and a motor, wherein the rotating bracket is arranged in the conducting pipe, the flow guide plate is a high temperature resistant flow guide plate made of a lightweight material, the flow guide plate is arranged on the rotating bracket, and the motor is connected to the rotating bracket; The motor is electrically connected to the control system. The motor drives the guide plate to swing through the rotating bracket, thereby adjusting the angle of the guide plate relative to the pipeline axis to form a local contraction and streamline deflection area in the conduction pipeline, thereby prompting the high-temperature gas to transform from the original laminar flow to the local turbulent state.

3. The heat pump energy-saving system according to claim 1, characterized in that: It also includes an adaptive algorithm module, the control system includes a temperature sensor and a circuit board, the temperature sensors are respectively arranged in the air inlet, the exhaust port and the wind channel, and the temperature sensor is electrically connected to the circuit board; The adaptive algorithm module is electrically connected to the circuit board, and the adaptive algorithm module collects temperature data provided by the temperature sensor in real time, and dynamically adjusts the opening of the electronic expansion valve, the operating frequency of the compressor and the rotation speed of the first fan according to the temperature data; The micro-electromechanical control element is a sensor based on the piezoresistive effect or the thermopile principle.

4. An industrial tumble dryer using the heat pump energy-saving system according to any one of claims 1 to 3, characterized in that: It also includes a casing, a drum, a driving device and an emergency stop controller, wherein the casing is provided with the wind channel, the drum is arranged in the wind channel, the driving device is arranged in the casing and connected to the drum, the driving device is electrically connected to the control system, and the driving device drives the drum to rotate when it works; The housing is provided with a clothing inlet at a position corresponding to the drum, and a door panel is provided at a position corresponding to the clothing inlet, and the door panel opens or closes the clothing inlet; The emergency stop controller is arranged on the casing, the emergency stop controller is electrically connected to the circuit board, and the emergency stop controller disconnects the main power supply through the circuit board.

5. The industrial tumble dryer according to claim 4, characterized in that: Also included is a lint collector for collecting lint particles in the high-temperature gas, the lint collector comprising a tray and a filter screen; A plurality of guide grooves for guiding fluff particles and a gathering area for guiding fluff particles are provided in the tray, and the guide grooves and the gathering area are communicated; The filter screen includes a coarse filter layer for intercepting larger particles of fluff and a fine filter layer for intercepting fine fluff and dust particles; The tray is detachably arranged on the casing and close to the exhaust port, the filter is detachably arranged on the casing, the inlet of the filter is connected to the tray, the outlet of the filter is connected to the inlet of the heat receiver, and the hot air passes through the tray and the filter into the heat receiver.

6. The industrial tumble dryer according to claim 5, characterized in that: It also includes an automatic fluff scraping device, a fluff blocking device and a fluff collecting bag, and the tray is provided with a fluff discharge outlet at the bottom corresponding to the gathering area; The automatic fluff scraping device comprises a micro motor, a transmission assembly, a scraper and a weight sensor, wherein the scraper is arranged in a sliding manner in the gathering area of ​​the tray, the micro motor and the transmission assembly are arranged outside the tray, the transmission assembly is respectively connected to the micro motor and the scraper, and the micro motor is electrically connected to the circuit board; The weight sensor is arranged at the bottom of the accumulation area of ​​the tray and is located next to the fluff discharge outlet. When the weight sensor detects that the accumulated weight of the fluff reaches a predetermined threshold, the weight sensor transmits a detection signal to the circuit board, and the circuit board controls the operation of the micro motor. The micro motor drives the scraper to slide along the accumulation area of ​​the tray through the transmission assembly, and pushes the fluff to the fluff discharge outlet. The fluff blocking device includes a baffle and a cylinder, wherein the baffle is slidably arranged on the tray, the cylinder is arranged on the tray and connected to the baffle, the cylinder is electrically connected to the circuit board, the circuit board controls the cylinder to work, the cylinder drives the baffle to slide, and the baffle slides to open or close the fluff discharge port; The fluff collecting bag is detachably hung on the tray, and the inlet of the fluff collecting bag is connected to the fluff discharge outlet.

7. The industrial tumble dryer according to claim 4, characterized in that: It also includes a clothing cooling module, the clothing cooling module includes a cooling pipeline and a cold air nozzle, a second fan is arranged at the inlet of the cooling pipeline, the inlet of the cooling pipeline is close to the evaporator, the outlet of the cooling pipeline is connected to the cold air nozzle, a one-way valve is built in the cold air nozzle, the cold air nozzle is connected to the wind channel, and the outlet of the one-way valve is connected to the ventilation channel; The second fan is electrically connected to the circuit board. The control system starts the second fan 10 minutes before the heat pump system stops working. The second fan sucks the cold energy generated by the evaporator into the cooling pipeline for storage. When the heat pump system stops working, the second fan transmits the cold energy of the cooling pipeline into the wind channel along the cold air nozzle and the one-way valve to achieve rapid cooling of the clothes. The control system turns off the second fan 5 minutes after the heat pump system stops working.

8. The industrial tumble dryer according to claim 7, characterized in that: The clothing cooling module also includes a cold storage box, the cold storage box has a built-in semiconductor cooling chip, the cold storage box has a cold air inlet and a cold air outlet, the cold air inlet is provided with a third fan and an air inlet valve, the cold air outlet is provided with a fourth fan and an air outlet valve, the semiconductor cooling chip, the air inlet valve, the air outlet valve, the third fan and the fourth fan are electrically connected to the circuit board respectively; The cold air inlet of the cold storage box is connected to the outlet of the cooling pipeline, and the cold air outlet of the cold storage box is connected to the cold air nozzle; The control system starts the second and third fans and opens the air inlet valve 10 minutes before the heat pump system stops working. The second and third fans draw the cold air near the evaporator into the cold storage box through the cooling pipeline and the cold air inlet for storage. At the same time, the semiconductor refrigeration chip cools the cold air in the cold storage box. When the heat pump system stops working, the control system automatically closes the air inlet valve. If the control system detects that the temperature of the air duct exceeds the preset threshold, the control system starts the fourth fan and opens the air outlet valve. Under the action of the fourth fan, the cold air from the cold storage box enters the cold air nozzle and the one-way valve along the cold air outlet and is transmitted into the air duct, thereby reducing the temperature of the air duct.

9. The industrial tumble dryer according to claim 8, characterized in that: The cold storage box includes an inner box and an outer box, and low thermal conductivity insulation material is filled or a vacuum layer is set between the inner box and the outer box. The inner wall of the inner box is covered with a reflective insulation film, and the semiconductor refrigeration plate is arranged on the outer surface of the side wall of the inner box in an embedded installation manner, and the cooling surface of the semiconductor refrigeration plate is tightly fitted to the inner wall of the inner box through high thermal conductivity heat dissipation glue, metal thermal interface material or customized cooling substrate.

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