Intelligent bed dual-channel air cooling and heating main machine and control method

Abstract

The application relates to a smart double-channel air cooling and heating main machine for a bed and a control method, which comprises a mattress; a bellows is connected to the inner cavity of the mattress; the bellows is connected to a main machine; the main machine is an air cooling and heating main machine. The refrigeration and heating mode comprises a square fan installed on the radiating fin of a small aluminum evaporation sheet A; a Peltier A is electrically connected with a Peltier lead wire; the large aluminum evaporation sheet A has a large aluminum evaporation shell; the application has the advantages of reasonable design, compact structure and convenient use.

Description

Technical Field

[0001] This invention relates to a dual-channel air-cooled and heated main unit for intelligent beds and its control method. Background Technology

[0002] In today's society, more and more people are paying attention to their sleep experience. Research has found that mattress temperature is one of the important indicators of people's sleep experience. Mattresses themselves cannot regulate temperature.

[0003] Studies have found that when meeting the above temperature difference requirements, a single-channel air-cooled heating unit, even at rated airflow, produces excessive noise from the fan and turbofan, affecting the user's sleep quality. A dual-channel structure can meet the requirements while reducing noise and maintaining the rated airflow.

[0004] To address the aforementioned technical issues, this application presents a wind-cooled and heated main unit that delivers hot and cold air into the mattress to cool or heat it from the inside out. When the mattress is heated inside and outside the blanket, a temperature difference of approximately 6°C is generated; when it is cooled, a temperature difference of approximately 2°C is generated. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a smart bed dual-channel air-cooled and heated host and control method, thereby solving people's temperature requirements when falling asleep and improving the sleep experience.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0007] A dual-channel air-cooled and heated main unit for a smart bed includes a mattress; a corrugated pipe is connected to the inner cavity of the mattress; the main unit is connected to the corrugated pipe; the main unit is an air-cooled and heated main unit.

[0008] As a further improvement to the above technical solution:

[0009] The cooling and heating module includes a square fan mounted on the heat sink of a small aluminum evaporator A;

[0010] Peltier A external power connection Peltier wire;

[0011] Large aluminum evaporator plate A has a large aluminum evaporation shell;

[0012] Small aluminum evaporator A has a small aluminum evaporator shell.

[0013] The main unit has air duct A; air duct A includes a left air duct and a right air duct;

[0014] The left and right air ducts are separated by partition A.

[0015] The right air duct is equipped with a right air inlet and a right air outlet at each end;

[0016] The left air duct has a left air inlet and a left air outlet at each end;

[0017] A turbofan A is installed in air duct A; air duct A includes a connected air inlet channel and an air outlet duct; an air inlet grille is provided in the air inlet channel.

[0018] A small aluminum evaporator A is provided on the main unit; a retainer A is provided on the back of the small aluminum evaporator A; a Peltier A is provided in the hollow of the retainer A; a large aluminum evaporator A is provided on the other side of the retainer A.

[0019] The main unit has an air duct A; there is a notch in the middle of the air duct A, and a cooling and heating module is installed at the notch; there is a cavity enclosed by an outer shell on one side of the notch.

[0020] A small aluminum evaporator C is installed at the bottom of the cavity; a turbine A is installed on the small aluminum evaporator C;

[0021] The casing opening of turbofan A is provided at one end of the air duct A;

[0022] An opening is provided at the other end of air duct A.

[0023] A small aluminum evaporator A is provided on the main unit; a retainer A is provided on the back of the small aluminum evaporator A; a Peltier A is provided in the hollow of the retainer A; a large aluminum evaporator A is provided on the other side of the retainer A.

[0024] The main unit has an air duct A; there is a notch in the middle of the air duct A, and a cooling and heating module is installed at the notch; there is a cavity enclosed by an outer shell on one side of the notch.

[0025] A small aluminum evaporator C is installed at the bottom of the cavity; a turbine A is installed on the small aluminum evaporator C;

[0026] The casing opening of turbofan A is provided at one end of the air duct A;

[0027] An opening is provided at the other end of air duct A.

[0028] The mattress has an electronic control system; the electronic control system includes a main control board; the main control board circuit is electrically connected to the AD / DC switching power supply, the fan assembly, and the Peltier assembly;

[0029] The fan assembly includes a square fan and a turbofan A;

[0030] Peltier components include Peltier A;

[0031] The controller may include a wired handheld controller or a wireless remote control;

[0032] The main control board includes a microcontroller (MCU); the MCU is electrically connected to an AD / DC switching power supply via a DC-DC circuit.

[0033] The microcontroller (MCU) connects to the wireless remote control via a wireless receiver module and / or an RF module; the MCU is also electrically connected to a buzzer, a built-in MOSFET driver chip circuit, and a built-in H-bridge chip circuit.

[0034] The pulse width modulation driver is electrically connected to the fan assembly; the built-in H-bridge chip circuit is electrically connected to the Peltier assembly; the driver uses a built-in MOS transistor drive chip circuit.

[0035] The MCU is electrically connected to pin 2 of the driver chip; the built-in MOS transistor driver chip U2 is electrically connected to the fan assembly via pin 7.

[0036] The current and temperature rise acquisition circuit is located between the built-in H-bridge chip circuit and the MCU.

[0037] The current and temperature rise acquisition circuit includes chip U5 and chip U8;

[0038] In chip U5, pins 1 and 6 are connected to the current path of the Peltier assembly; pin 3 is grounded through resistor R28, and the current signal collected by resistor R28 is connected to the other end of resistor R4 electrically connected to pin 3 of U8. The current OCP signal of the Peltier assembly is amplified by chip U8 and transmitted to pin 21 of MCU through pin 1; the temperature rise acquisition channel is connected to the NTC temperature acquisition circuit through pin 5 of U8, and the signal is amplified by chip U8 and output through pin 7 of chip U8 and electrically connected to pin 22 of MCU.

[0039] A method for controlling a dual-channel air-cooled and heated main unit for a smart bed, utilizing the aforementioned main unit;

[0040] First, when the turbine fan A is powered on, the fan blades rotate, generating air pressure in the air duct A, and the flowing air enters the air duct A of the main unit; then, inside the air duct A, the module in cooling or heating mode processes the temperature of the air flowing through the air duct A before it is output from the air outlet and enters the interior of the mattress.

[0041] As a further improvement to the above technical solution:

[0042] When implementing the heating strategy: First, when the control system inputs DC power, the positive terminal of the Peltier wire contacts the positive terminal of the circuit, and the negative terminal of the Peltier wire connects to the negative terminal of the circuit. Then, the front side of the Peltier wire generates heat and transfers it to the small aluminum evaporator shell through silicone grease for thermal energy evaporation, which is then collected in the air duct A. The back side of the Peltier wire generates cold energy and transfers it to the large aluminum evaporator shell outside the duct through silicone grease for cold energy evaporation. Second, the square fan operates, accelerating the airflow speed on the surface of the large aluminum evaporator shell, thereby improving the evaporation efficiency of the large aluminum evaporator shell.

[0043] When implementing the cooling strategy, when DC power is input, and the positive terminal of the Peltier wire is connected to the negative terminal of the circuit, and the negative terminal of the Peltier wire is connected to the positive terminal of the circuit, cold energy is generated on the front side of Peltier A. This cold energy is transferred to the small aluminum evaporator shell through silicone grease for evaporation and is collected in the air duct A. Heat energy is generated on the back side of Peltier A. This heat energy is transferred to the large aluminum evaporator shell through silicone grease for evaporation. When the square fan is working, it accelerates the airflow speed on the surface of the large aluminum evaporator shell, thereby improving the evaporation efficiency of the large aluminum evaporator shell.

[0044] Working principle: After the system is connected to AC power, the external switching power supply provides 29V to the main control board. The DC-DC circuit on the main control board steps down the 29V to 3.3V and then supplies power to the microcontroller MCU and RF module.

[0045] When the mattress is heated, commands are sent to the main control board via buttons on the wired controller. The controller interface circuit on the main control board receives the button commands from the wired controller, converts them into voltage levels or command data that can be recognized by the microcontroller MCU, and sends them to the microcontroller MCU for processing. When the microcontroller MCU receives the button commands from the controller, it executes the operation.

[0046] The operation includes turning on the Peltier A heating element; once the Peltier A heating element reaches the user-set temperature, the fan assembly is turned on to deliver warm air from the Peltier A heating element to the mattress. Additionally, air is blown onto the other side of the Peltier A element to balance the temperature on both sides.

[0047] This invention is reasonably designed, low in cost, sturdy and durable, safe and reliable, simple to operate, time-saving and labor-saving, cost-saving, compact in structure and easy to use. It solves the temperature requirements when people fall asleep and improves the sleep experience. The specific embodiments are described in detail. Attached Figure Description

[0048] Figure 1 This is a connection diagram of the air-cooled and heated host system of the present invention.

[0049] Figure 2 This is an external view of the air-cooled main unit of the present invention.

[0050] Figure 3 This is a structural diagram illustrating the single-channel airflow heating and cooling module of the present invention.

[0051] Figure 4 This is a schematic diagram illustrating the principle of the single-channel airflow heating and cooling module of the present invention.

[0052] Figure 5 This is an illustration of the single-channel airflow structure of the present invention.

[0053] Figure 6 This is a diagram illustrating the airflow principle of the air duct of the present invention.

[0054] Figure 7 This is an introductory diagram of the dual-air duct structure of the present invention.

[0055] Figure 8 This is a structural diagram illustrating the dual-channel assembly of the present invention.

[0056] Figure 9 This is a block diagram of the electronic control system of the present invention.

[0057] Figure 10 This is a schematic diagram of the microcontroller circuit of the control box system of the present invention.

[0058] Figure 11 This is a schematic diagram of the wireless transceiver circuit of the present invention.

[0059] Figure 12 This is a schematic diagram of the wired hand controller circuit of the present invention.

[0060] Figure 13 This is a schematic diagram of the power supply circuit of the control box of the present invention.

[0061] Figure 14 This is a schematic diagram of the built-in MOS tube fan drive circuit of the present invention.

[0062] Figure 15 This is a schematic diagram of the Peltier drive circuit of the present invention.

[0063] Figure 16 This is a schematic diagram of the current and temperature rise acquisition circuit of the present invention.

[0064] Figure 17 This is a schematic diagram of the wired hand controller circuit of the present invention.

[0065] The components include: 1. Mattress; 2. Corrugated pipe; 3. Main unit; 4. Air inlet grille; 5. Air outlet duct; 6. Small aluminum evaporator A; 7. Peltier A; 8. Cage A; 9. Large aluminum evaporator A; 10. Square fan; 11. Large aluminum evaporator shell; 12. Small aluminum evaporator shell; 13. Peltier wire; 14. Peltier A; 15. Cage A; 16. Air duct A; 17. Turbine fan A; 18. Small aluminum evaporator C; 19. Baffle A; 20. Baffle A; 21. Large aluminum evaporator A; 22. Turbine fan; 23. Turbine fan; 44. Square fan; 55. Large aluminum evaporator shell; 66. Small aluminum evaporator A; 77. Peltier A; 88. C; 99. Square fan; 100. Square fan; 11. Large aluminum evaporator C; 22. Turbine fan; 23. Large aluminum evaporator C; 24. Large aluminum evaporator C; 25. Large aluminum evaporator C; 26. Large aluminum evaporator C; 27. Large aluminum evaporator C; 28. Large aluminum evaporator C; 29. ​​Large aluminum evaporator C; 20. Large aluminum evaporator C; 21. Large aluminum evaporator C; 22. Large aluminum evaporator C; 23. Large aluminum evaporator C; 24. Large aluminum evaporator C; 25. Large aluminum evaporator C; 26. Large aluminum evaporator C; 27. Large aluminum evaporator C; 28. Large aluminum evaporator C; 29. ​​Large aluminum evaporator C; 20. Large aluminum evaporator C; 23. Fan A; 24. Air Duct A; 25. Square Fan A; 26. Large Aluminum Evaporator E; 27. Peltier C; 28. Cage C; 29. ​​Right Air Duct; 30. Right Turbine Fan; 31. Small Aluminum Evaporator D; 32. Baffle C; 33. Small Aluminum Evaporator E; 34. Left Turbine Fan; 35. Left Air Duct; 36. Cage D; 37. Peltier D; 38. Large Aluminum Evaporator F; 39. Square Fan B; 40. Left Air Inlet; 41. Right Air Inlet; 42. Left Air Outlet; 43. Right Air Outlet. Detailed Implementation

[0066] like Figure 1-17 As an example, such as Figure 1 As shown, this embodiment describes the connection method between the air-cooled and heated main unit and the mattress: it is a product designed and developed by combining sheet metal structure and plastic structure.

[0067] This embodiment includes a mattress 1; a corrugated pipe 2 is connected to the inner cavity of the mattress 1; the corrugated pipe 2 is connected to a main unit 3; the main unit 3 is a fan-cooled and heated main unit;

[0068] When the air-cooled and heated unit 3 is powered on and starts working, the cooling or heating air it outputs is delivered into the mattress 1 through the corrugated pipe 2 connecting the unit and the mattress.

[0069] As an example, such as Figure 2 As shown, the airflow principle of the air-cooled heating unit is explained as follows: Only the air inlet (4) and outlet (5) of the air-cooled heating unit are open; the rest are sealed. A turbine fan (or turbo fan for short) is installed inside the unit's airflow channel. When powered, the turbine fan blades rotate, generating air pressure within the unit's channel. This air pressure creates airflow outside the unit, and the flowing air enters the unit's airflow channel through the inlet. Inside the channel, modules in either cooling or heating mode process the airflow, reducing its temperature before it is output from the outlet and enters the mattress.

[0070] The main unit 3 has an air duct; a turbofan A22 is installed in the air duct; the air duct includes a connected air inlet channel and an air outlet pipe 5; an air inlet grille 4 is provided in the air inlet channel.

[0071] As an example, such as Figure 3 As shown: The cooling and heating module structure is as follows: This module consists of a small aluminum evaporator A6 that releases both heat and cold energy, two Peltiers A7 that generate heat and cold energy when DC power is applied, a retainer A8 that holds the Peltiers A7 in a fixed position, and a large aluminum evaporator A9 that releases both heat and cold energy. These components are assembled together with screws to form the cooling and heating module. Note: Thermal grease should be applied to both the front and back of the two Peltiers.

[0072] A small aluminum evaporator A6 is provided on the main unit 3; a retainer A8 is provided on the back of the small aluminum evaporator A6; a Peltier A7 is provided in the hollow of the retainer A8; a large aluminum evaporator A9 is provided on the other side of the retainer A8;

[0073] As an example, such as Figure 4As shown, the working principle of the cooling and heating modules is as follows: When the air-cooled heating unit is powered on, the control system of the unit receives the control command from the remote control and provides power to the "Peltier" component under the action of the control program.

[0074] The cooling and heating module includes a square fan 10 mounted on the heat sink of a small aluminum evaporator A6;

[0075] Peltier A7 external power connection Peltier wire 13;

[0076] The large aluminum evaporator A9 has a large aluminum evaporator shell 11;

[0077] The small aluminum evaporator plate A6 has a small aluminum evaporator shell 12;

[0078] The heating principle of this embodiment is as follows: When the control system inputs DC power in the following manner: the positive terminal of the Peltier wire 13 is connected to the positive terminal of the circuit, and the negative terminal of the Peltier wire 13 is connected to the negative terminal of the circuit, the front side of the Peltier wire 13 generates heat and transfers it through silicone grease to the small aluminum evaporator shell 12 for thermal evaporation. The heat energy is then collected in the air duct. The reverse side of the Peltier wire 13 generates cold energy, which is also transferred through silicone grease to the large aluminum evaporator shell 11 outside the duct for cold energy evaporation. Two square fans are installed near the large aluminum evaporator shell 11, operating side by side. When the square fans are working, they accelerate the airflow speed on the surface of the large aluminum evaporator shell 11, thereby improving the evaporation efficiency of the large aluminum evaporator shell 11. While improving the evaporation efficiency of the large evaporator shell 11 outside the air duct, the evaporation efficiency of the small aluminum evaporator shell 12 inside the air duct is also improved.

[0079] Refrigeration Principle. When the control system receives DC power in the following manner: the positive terminal of the Peltier wire 13 is connected to the negative terminal of the circuit, and the negative terminal of the Peltier wire 13 is connected to the positive terminal of the circuit, cold energy is generated on the front side of the Peltier wire 13. This cold energy is transferred to the small aluminum evaporator shell 12 through silicone grease for evaporation and accumulates in the channel. The reverse side of the Peltier wire generates heat energy, which is also transferred to the large aluminum evaporator shell 11 outside the channel through silicone grease for evaporation. Two square fans are installed side by side on the large aluminum evaporator shell 11. When the square fans are working, they accelerate the airflow speed on the surface of the large aluminum evaporator shell 11, improving the evaporation efficiency of the large evaporator. While improving the evaporation efficiency of the large aluminum evaporator shell 11 outside the channel, the evaporation efficiency of the small aluminum evaporator shell 12 inside the air duct is also improved.

[0080] As an example, such as Figure 5As shown: Single-channel module structure introduction: This module consists of a small aluminum evaporator shell 12 that generates wind energy when energized, a large aluminum evaporator 13 that releases heat and cold energy, two Peltiers 14 that generate heat and cold energy when DC power is applied, a retainer 15 that keeps the Peltiers in a fixed position, a channel duct 16, a turbofan 17 that generates wind energy in the channel when energized, another small aluminum evaporator 18 that releases heat and cold energy, and a cavity channel partition 8 that forms ventilation at both ends.

[0081] Cooling fan 12 can be a square fan 10.

[0082] As an example, the host 3 is provided with an air duct A16; a notch is provided in the middle of the air duct A16, and a cooling and heating module is provided at the notch; a cavity covered by an outer shell is provided on one side of the notch.

[0083] A small aluminum evaporator C18 is installed at the bottom of the cavity; a turbine fan A17 is installed on the small aluminum evaporator C18;

[0084] The casing opening of the turbofan A17 is provided at one end of the air duct A16;

[0085] An opening is provided at the other end of the air duct A16;

[0086] In this embodiment, the small aluminum evaporator A6 has a small aluminum evaporator shell 12; the large aluminum evaporator 11 has a large aluminum evaporator shell 13;

[0087] A partition A19 is installed between adjacent air ducts A16;

[0088] Peltier A14 is the same as Peltier A7; cage A15 is the same as cage A8.

[0089] like Figure 6 As shown: The working principle of a single-channel module is as follows: A partition 20, a set of cooling and heating modules, a turbine fan, and an air duct are assembled together with screws to form a single-channel module. The single-channel module creates a sealed environment around the channel, allowing air to enter only through the inlet and exit only through the outlet.

[0090] Specifically, a baffle A20 is installed below the air duct A23; the large aluminum evaporator A21 and the turbine fan A22 are arranged in the air duct A23 as follows: Figure 6 Among them, partition A20 is partition A19; large aluminum evaporator A21 is large aluminum evaporator A9; turbo fan A22 is turbo fan A17; and air duct A23 is air duct A16.

[0091] like Figure 7 As shown: In Figure 6Based on this, a dual-channel modular structure is introduced: four square fans A24 and B38, two large aluminum evaporators E25 and F37 that release heat and cold energy, four Peltiers C26 and D36 that generate heat and cold energy when DC power is applied, two retainers C27 and D35 that hold the Peltiers in a fixed position, a right air duct 28 that plays an important role in the air duct configuration, a right turbo fan 29 that generates airflow within the air duct when powered, a small aluminum evaporator D30 that releases heat and cold energy, a baffle C31 that assists in forming ventilation at both ends of the air duct, another small aluminum evaporator E32 that releases heat and cold energy, a left turbo fan 33 that generates airflow within the air duct when powered, a left air duct 34 that plays an important role in the air duct configuration, and a square fan 10 that generates airflow within the air duct when powered. These are assembled together with screws to form the cooling and heating module. Note: Apply thermal grease to both the front and back of the four Peltier stickers.

[0092] like Figure 8 As shown: The working principle of the dual-channel module: The dual-channel air duct is divided into a left air duct and a right air duct by a partition plate, and they are assembled together with screws to form a dual-channel module. The dual-channel module forms a sealed treatment around the channels, so air can only enter from the air inlet of the dual-channel module and exit from the air outlet of the dual-channel module.

[0093] Air duct A16 includes left air duct 34 and right air duct 28;

[0094] Left air duct 34 and right air duct 28 are separated by partition A19;

[0095] The right air duct 28 is provided with a right air inlet 40 and a right air outlet 42 at both ends;

[0096] The left air duct 34 has a left air inlet 39 and a left air outlet 41 at both ends.

[0097] like Figure 9 As shown, mattress 1 has an electronic control system; the electronic control system includes a main control board; the main control board circuit is electrically connected to the AD / DC switching power supply, the fan assembly and the Peltier assembly respectively;

[0098] The fan assembly includes a square fan 10 and a turbofan A17;

[0099] Peltier components include Peltier A7;

[0100] The controller may include a wired handheld controller or a wireless remote control;

[0101] The main control board includes a microcontroller (MCU); the MCU is electrically connected to an AD / DC switching power supply via a DC-DC circuit.

[0102] The microcontroller (MCU) connects to the wireless remote control via a wireless receiver module and / or an RF module; the MCU is also electrically connected to a buzzer, a built-in MOSFET driver chip circuit, and a built-in H-bridge chip circuit.

[0103] The pulse width modulation driver is electrically connected to the fan assembly; the built-in H-bridge chip circuit is electrically connected to the Peltier assembly; the driver uses a built-in MOS transistor drive chip circuit.

[0104] Working Principle: After the system is connected to AC power, an external switching power supply provides 29V to the main control board. The DC-DC circuit on the main control board steps down the 29V to 3.3V to power the MCU and RF modules. The main 29V power supply also powers the fan drive and H-bridge circuit. When the user needs to warm the mattress, they send a command to the main control board via buttons on the wired controller. The controller interface circuit on the main control board receives the button command and converts it into a voltage level or command data that the MCU can recognize, which is then transmitted to the MCU for processing. When the MCU receives the button command, it executes the relevant operation, such as activating the Peltier heating element. Once the Peltier heating element reaches the user-set temperature, the fan is activated to deliver warm air to the mattress through the ventilation duct. Simultaneously, another fan is activated to blow air onto the other side of the Peltier, ensuring temperature balance between the two sides. Similarly, users can also operate other functions through the wired controller, such as turning off the Peltier heating, adjusting the Peltier temperature rise, and adjusting the Peltier cooling.

[0105] Alternatively, users can send commands to the wireless receiver module on the main control board by operating the buttons on the wireless controller. After receiving the button commands from the wireless controller, the wireless receiver module converts them into voltage levels or command data that the microcontroller can recognize and transmits them to the microcontroller for processing. When the microcontroller receives the button commands from the wireless controller, it executes the relevant operations, such as turning on the Peltier heating element, turning off the Peltier heating element, adjusting the temperature rise of the Peltier element, and adjusting the cooling of the Peltier element.

[0106] like Figure 11 The control box system's microcontroller processes wired or wireless remote control commands, controlling the Peltier's cooling or heating functions, while simultaneously monitoring the Peltier's operating current and temperature rise. It collects the Peltier's current and temperature rise data and then uses a PID algorithm in the software to control the Peltier's cooling or heating temperature. The microcontroller also controls the fan to deliver cool or warm air to the mattress and to dissipate heat from the Peltier. When the electrical control system encounters an abnormal situation, the microcontroller activates a buzzer alarm.

[0107] like Figure 12The user operates the buttons on the remote control. When the wireless module on the remote control receives the button command, it converts the button signal into a radio frequency signal and sends it to the wireless receiving module of the control box. After receiving the wireless radio frequency signal from the remote control, the wireless module circuit of the control box converts the wireless radio frequency signal into a level or command data that the microcontroller can recognize. Then, the microcontroller receives the button command from the wireless controller and executes the relevant operation, such as turning on the Peltier heating, turning off the Peltier heating, adjusting the Peltier temperature rise, and adjusting the Peltier cooling, etc.

[0108] The wired controller interface circuit converts the wired controller button signals into voltage levels or command data that the microcontroller can recognize and transmits them to the microcontroller for processing. The microcontroller then controls the operation of the fan and Peltier. Figure 13 In this circuit, the power supply circuit is used to supply power to the microcontroller, hand controller circuit, and MOSFET drive circuit.

[0109] like Figure 14 The fan is controlled by the switching action of the built-in MOS transistor chip driving circuit, thus realizing the start and stop of the fan.

[0110] exist Figure 15 The built-in H-bridge chip circuit is used to change the current direction of the Peltier, thereby achieving Peltier cooling or heating. The H-bridge circuit uses chip U5.

[0111] exist Figure 16 In the middle, the current and temperature rise acquisition circuit is used to collect the current and temperature rise data during the Peltier cooling and heating process and feed them back to the microcontroller for precise PID control of the Peltier cooling or heating temperature.

[0112] exist Figure 17 In the middle, the hand controller circuit is connected to the control box to operate the fan and Peltier.

[0113] The current and temperature rise acquisition circuit is located between the H-bridge circuit and the MCU;

[0114] The current and temperature rise acquisition circuit includes chip U5;

[0115] exist Figure 15 In chip U5, pins 1 and 6 are connected to the current channel of the Peltier module; pin 3 is grounded through resistor R28, and the current signal collected by resistor R28 is connected to the other end of resistor R4 electrically connected to pin 3 of U8. The current OCP signal of the Peltier module is amplified by chip U8 and transmitted to pin 21 of MCU through pin 1; the temperature rise acquisition channel is connected to the NTC temperature acquisition circuit through pin 5 of U8, and the signal is amplified by chip U8 and output through pin 7 of chip U8 and electrically connected to pin 22 of MCU.

[0116] The present invention has been described in detail for the purpose of making the disclosure clearer, and the prior art will not be listed in detail.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. It is obvious to those skilled in the art that multiple technical solutions of the present invention can be combined. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All technical contents not described in detail in the present invention are well-known technologies.

Claims

1. A control method for a dual-channel air-cooled and heated main unit for a smart bed, characterized in that: With the help of the host computer; First, the turbine fan A (22) is powered on and the fan blades rotate, causing air pressure to be generated in the air duct A (16), and the flowing air enters the air duct A (16) of the main unit (3); then, in the air duct A (16), the module in cooling or heating mode processes the air flowing through the air duct A (16) by temperature treatment, and then outputs it from the air outlet into the interior of the mattress (1); When implementing the heating strategy; firstly, when the control system inputs DC power, the positive terminal of the Pel conductor (13) contacts the positive terminal of the circuit, and the negative terminal of the Pel conductor (13) is connected to the negative terminal of the circuit; then, the front side of the Pel conductor (13) generates heat and transfers it to the small aluminum evaporator shell (12) through silicone grease for thermal energy evaporation, and it accumulates in the air duct A (16). The back side of the Pel conductor A (7) generates cold energy and transfers it to the large aluminum evaporator shell (11) outside the channel through silicone grease for cold energy evaporation; secondly, the square fan (10) works, which accelerates the airflow speed on the surface of the large aluminum evaporator shell (11) and improves the evaporation efficiency of the large aluminum evaporator shell (11); When implementing the cooling strategy, when DC power is input, the positive terminal of the Peltier wire (13) contacts the negative terminal of the circuit, and the negative terminal of the Peltier wire (13) is connected to the positive terminal of the circuit, cold energy is generated on the front side of the Peltier A (7), which is transferred to the small aluminum evaporator shell (12) through silicone grease for cold energy evaporation and accumulates in the air duct A (16); heat energy is generated on the back side of the Peltier A (7), which is transferred to the large aluminum evaporator shell (11) through silicone grease for heat energy evaporation. When the square fan (10) is working, it accelerates the air flow speed on the surface of the large aluminum evaporator shell (11) and improves the evaporation efficiency of the large aluminum evaporator shell (11). When AC power is connected, the external switching power supply provides 29V to the main control board. The DC-DC circuit on the main control board then steps down the 29V to 3.3V to power the microcontroller (MCU) and RF module. When the mattress (1) is heated, it sends a command to the main control board through the button on the wired hand controller. After receiving the button command from the wired hand controller, the hand controller interface circuit on the main control board converts it into a level or command data that can be recognized by the microcontroller MCU and sends it to the microcontroller MCU for processing. When the microcontroller MCU receives the button command from the hand controller, it executes the operation. The operation includes turning on the heating of Peltier A (7); when the heating temperature of Peltier A (7) rises to the user-set temperature, the fan assembly is turned on to deliver warm air to the mattress (1) from the heat generated by Peltier A (7), and air is blown to the other side of Peltier A (7) to balance the temperature of the front and back of Peltier A (7); The main unit includes a mattress (1); a corrugated pipe (2) is connected to the inner cavity of the mattress (1); the main unit (3) is connected to the corrugated pipe (2); the main unit (3) is a fan-cooled and heated unit; The cooling and heating module includes a square fan (10) mounted on the heat sink of a small aluminum evaporator A (6). Peltier A (7) External power connection Peltier wire (13); The large aluminum evaporator plate A (9) has a large aluminum evaporator shell (11). The small aluminum evaporator plate A (6) has a small aluminum evaporator shell (12); The main unit (3) has an air duct A (16); the air duct A (16) includes a left air duct (34) and a right air duct (28); The left air duct (34) and the right air duct (28) are separated by a partition A (19); The right air duct (28) is provided with a right air inlet (40) and a right air outlet (42) at both ends; The left air duct (34) is provided with a left air inlet (39) and a left air outlet (41) at both ends. A turbofan A (22) is installed in the air duct A (16); the air duct A (16) includes a connected air inlet channel and an air outlet pipe (5); an air inlet grille (4) is provided in the air inlet channel. A small aluminum evaporator A (6) is provided on the main unit (3); a retainer A (8) is provided on the back of the small aluminum evaporator A (6); a Peltier A (7) is provided in the hollow of the retainer A (8); a large aluminum evaporator A (9) is provided on the other side of the retainer A (8). In the host (3), there is a duct A (16); there is a notch in the middle of the duct A (16), and a cooling and heating module is installed at the notch; there is a cavity covered by an outer shell on one side of the notch; A small aluminum evaporation plate C (18) is provided at the bottom of the cavity; a turbine fan A (17) is provided on the small aluminum evaporation plate C (18); A casing opening for a turbofan A (17) is provided at one end of the air duct A (16); An opening is provided at the other end of the air duct A (16); A small aluminum evaporator A (6) is provided on the main unit (3); a retainer A (8) is provided on the back of the small aluminum evaporator A (6); a Peltier A (7) is provided in the hollow of the retainer A (8); a large aluminum evaporator A (9) is provided on the other side of the retainer A (8). In the host (3), there is a duct A (16); there is a notch in the middle of the duct A (16), and a cooling and heating module is installed at the notch; there is a cavity covered by an outer shell on one side of the notch; A small aluminum evaporation plate C (18) is provided at the bottom of the cavity; a turbine fan A (17) is provided on the small aluminum evaporation plate C (18); A casing opening for a turbofan A (17) is provided at one end of the air duct A (16); An opening is provided at the other end of the air duct A (16); The mattress (1) has an electronic control system; the electronic control system includes a main control board; the main control board circuit is electrically connected to the AD / DC switching power supply, the fan assembly and the Peltier assembly respectively; The fan assembly includes a square fan (10) and a turbofan A (17); The Peltier assembly includes Peltier A (7); The controller may include a wired handheld controller or a wireless remote control; The main control board includes a microcontroller (MCU); the MCU is electrically connected to an AD / DC switching power supply via a DC-DC circuit. The microcontroller (MCU) connects to the wireless remote control via a wireless receiver module and / or an RF module; the MCU is also electrically connected to a buzzer, a built-in MOSFET driver chip circuit, and a built-in H-bridge chip circuit. The pulse width modulation driver is electrically connected to the fan assembly; the built-in H-bridge chip circuit is electrically connected to the Peltier assembly; the driver uses a built-in MOS transistor drive chip circuit. The MCU is electrically connected to pin 2 of the driver chip; the built-in MOSFET driver chip U2 is electrically connected to the fan assembly via pin 7. The current and temperature rise acquisition circuit is located between the built-in H-bridge chip circuit and the MCU. The current and temperature rise acquisition circuit includes chip U5 and chip U8; In chip U5, pins 1 and 6 are connected to the current path of the Peltier assembly; pin 3 is grounded through resistor R28, and the current signal collected by resistor R28 is connected to the other end of resistor R4 electrically connected to pin 3 of U8. The current OCP signal of the Peltier assembly is amplified by chip U8 and transmitted to pin 21 of MCU through pin 1; the temperature rise acquisition channel is connected to the NTC temperature acquisition circuit through pin 5 of U8, and the signal is amplified by chip U8 and output through pin 7 of chip U8 and electrically connected to pin 22 of MCU.

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