Heating control method and heating device

Abstract

According to the heating control method and the heating device, a corresponding response relation exists between the air outlet amount and different heating powers generated by a heating element along with operation time, namely, when the heating power of the heating element is gradually increased to the maximum stage, the air outlet amount is the first air outlet amount; when the heating power of the heating element is gradually reduced, the air outlet amount is second air outlet amount; after the heating power of the heating element is reduced to the stable stage, the air outlet amount is the third air outlet amount, and the first air outlet amount is larger than the second air outlet amount and is smaller than or equal to the third air outlet amount, so that when the heating element is at the maximum heating power, air flow is minimum, and hotter air is exhausted by sucking hot air, and therefore air around the heating element is heated to the maximum extent; and the situation that a large amount of air which is not completely heated is blown to a user in the prior art is avoided. And after the air around the to-be-heated element is fully heated, the air outlet amount is increased, so that more heated air is blown to a user, and the somatosensory comfort of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bathroom heater control, and in particular to a heating control method and a heating device. Background Art

[0002] Existing bathrooms are equipped with heating equipment, mainly including lamp heating and air heating. Air heating is widely used because it is safer and more comfortable than lamp heating. Existing air heating heating elements usually have two gears, strong and weak, to achieve strong heating and weak heating, but the fan speed cannot be adjusted and always remains at full speed. Therefore, there are the following problems in the initial startup of air heating: In the initial startup, the temperature in the bathroom is low and the indoor temperature rise time is long. In this case, the fan rotates at full speed to blow the indoor air that has not been fully heated to the user, which is not a good customer experience. Summary of the invention

[0003] The present invention provides a heating control method and a heating device, aiming to avoid blowing unheated air to a user and improve the user experience.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A heating control method for controlling air flow rate comprises the following steps:

[0006] S1, start to t 1 During the period, the heating power of the heating element increases with the temperature until it reaches the maximum heating power, and the air output is the first air output;

[0007] S2, t 1 Time period to t 2 During this period, the heating power of the heating element decreases as the temperature increases, and the air volume is the second air volume;

[0008] S3, t 2 At the end of the time period, the heating power of the heating element reaches a steady state, and the air volume is the third air volume;

[0009] Among them, the first air volume < the second air volume ≤ the third air volume.

[0010] Furthermore, a temperature sensor is included, and the temperature sensor is 1 The current ambient temperature monitored during the time period is in the first temperature range, and the air volume corresponding to the first temperature range is the first air volume;

[0011] The temperature sensor is at t 1 Time period to t 2 The current ambient temperature monitored during the time period is in the second temperature range, and the air volume corresponding to the second temperature range is the second air volume;

[0012] The temperature sensor is at t 2 The current ambient temperature monitored from the time period to the end is in the third temperature range, and the air volume corresponding to the third temperature range is the third air volume;

[0013] Among them, any temperature value in the first temperature interval is lower than any temperature value in the second temperature interval, and any temperature in the second temperature interval is lower than any temperature value in the third temperature interval.

[0014] Furthermore, the change in air volume is achieved by adjusting the flow area of ​​the air inlet, the flow area of ​​the air outlet, or the flow area of ​​the air duct connecting the air inlet and the air outlet; or the change in air volume is achieved by adjusting the fan speed.

[0015] A heating device includes an air inlet, an air outlet and an air duct connecting the air inlet and the air outlet, wherein a heating element, a fan and a temperature sensor are arranged in the air duct; the device also has a quick heating mode, so that the heating element and the fan are suitable for the heating control method as described above.

[0016] Furthermore, the heating element has a temperature resistance characteristic in which its resistance first decreases and then increases as the temperature increases within a rated range.

[0017] Furthermore, it also includes a thyristor, which is connected to the fan. The thyristor controls the speed of the fan by changing the conduction angle of the thyristor based on the ambient temperature monitored by the temperature sensor.

[0018] Furthermore, it also includes a start / stop button for starting the rapid heating mode, and a wind speed button for controlling the fan speed.

[0019] Furthermore, the control priority of the wind speed button on the air output volume is higher than the control priority of the air output volume in the heating control method.

[0020] Furthermore, it also includes a display screen for displaying the current ambient temperature.

[0021] Furthermore, it includes a control panel, which is provided with a start / stop button, a wind speed button and a display screen.

[0022] The beneficial effects of the present invention are:

[0023] 1. A heating control method proposed in the present invention enables a corresponding response relationship between the air volume and the different heating powers generated by the heating element over the running time, that is, when the heating power of the heating element gradually increases to the maximum stage, the air volume is the first air volume; when the heating power of the heating element gradually decreases, the air volume is the second air volume; after the heating power of the heating element decreases to a stable stage, the air volume is the third air volume, and the first air volume < the second air volume ≤ the third air volume, so that when the heating element is at the maximum heating power, the air flow is the minimum, and the hotter air is discharged by inhaling hot air, thereby heating the air around the heating element to the maximum extent, avoiding the situation in the prior art where a large amount of incompletely heated air is blown to the user. After the air around the heating element is fully heated, the air volume is increased so that more heated air is blown to the user, thereby improving the user's physical comfort.

[0024] 2. A heating control method proposed in the present invention further includes a temperature sensor, wherein the temperature sensor is respectively 1 Time period, t 1 Time period to t 2 Time period and t 2 The ambient temperatures monitored in the three stages from the time period to the end are the first temperature range, the second temperature range and the third temperature range. The first temperature range, the second temperature range and the third temperature range correspond to the first air volume, the second air volume and the third air volume respectively, so that the current air volume is adjusted according to the change of the current ambient temperature to achieve automatic control.

[0025] 3. A heating device proposed in the present invention is applicable to the aforementioned heating control method. The heating element adopted has a temperature resistance characteristic in which its resistance first decreases and then increases as the temperature increases within the rated range, so that the heating power of the heating element first increases and then decreases as the temperature increases, and the air outlet volume is first small and then large, so as to quickly increase the temperature of the local air, and then diffuse the heated air into the environment, so as to achieve a faster temperature rise under the same conditions.

[0026] 4. In a heating device proposed by the present invention, a thyristor is connected to the fan, and the rotation speed of the fan is controlled by changing the conduction angle of the thyristor, thereby realizing stepless speed regulation of air heating.

[0027] 5. In a heating device proposed by the invention, the control priority of the wind speed button on the air output is higher than the control priority of the air output in the heating control method, thereby meeting the diverse usage needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of a heating control method of the present invention;

[0030] Figure 2 A circuit diagram of a heating device of the present invention;

[0031] Figure 3 A temperature resistance characteristic curve of a heating element of a heating device of the present invention;

[0032] Figure 4 A control panel of a heating device of the present invention;

[0033] In the figure, there is a control panel 10; a start / stop button 20; a wind speed button 30; a display screen 40; a lighting button 50; a night light button 60; and a ventilation button 70. DETAILED DESCRIPTION

[0034] Embodiment 1

[0035] Combine the following Figure 1 The present invention is described in detail.

[0036] A heating control method for controlling air flow rate comprises the following steps:

[0037] S1, start to t 1 During this period, the heating power of the heating element increases with the temperature until it reaches the maximum heating power, and the air volume is the first air volume W1. Figure 1 Medium 0-t 1 shown.

[0038] S2, t 1 Time period to t 2 During the period, the heating power of the heating element decreases as the temperature increases, and the air volume is the second air volume W2. Figure 1 Medium 1 -t 2 As shown;

[0039] S3, t 2 At the end of the time period, the heating power of the heating element reaches a steady state, and the air volume is the third air volume W3. Figure 1 Medium 2 -t 3 shown.

[0040] Furthermore, the current ambient temperature can be monitored by a temperature sensor to control the air volume. Specifically, the temperature sensor is set to 1 The current ambient temperature monitored during the time period is in the first temperature range, and the air volume corresponding to the first temperature range is the first air volume;

[0041] The temperature sensor is at t 1 Time period to t 2 The current ambient temperature monitored during the time period is in the second temperature range, and the air volume corresponding to the second temperature range is the second air volume;

[0042] The temperature sensor is at t 2 The current ambient temperature monitored from the time period to the end is in the third temperature range, and the air volume corresponding to the third temperature range is the third air volume;

[0043] In summary, 0-t 1 In the first temperature interval T1, the temperature is relatively low, and the air flow should be reduced to avoid the situation in the prior art where a large amount of unheated air is blown to the user. Therefore, the first air volume W 1 Smaller. 1 -t 2 In the second stage, the heating power gradually decreases. At this time, the heating element peripheral control has completed heating. Any temperature value in the second temperature interval T2 is greater than any temperature value in the first temperature interval T1. The air volume can be appropriately increased, so that most of the heated air is blown to the user, improving the user's body comfort. Therefore, the second air volume W 2 Greater than the first air volume W 1 .t 2 -t 3 In the stage, the resistance of the heating element reaches the maximum value within the rated range, the heating power is minimum, the heating power is no longer changing, the temperature of the indoor environment has risen significantly, any temperature value in the third temperature interval T3 is greater than any temperature value in the second temperature interval T2, the air volume can be further increased or maintained, therefore, the third air volume W 3 Not less than the second air volume W 2 Furthermore, the maximum heating power is 2600W to avoid excessive use, and the minimum heating power is 1600W to avoid the overall temperature of the bathroom space being too low.

[0044] In summary, in the first temperature interval T1, the second temperature interval T2 and the third temperature interval T3, the first air volume W 1 , Second air volume W 2 And the third air volume W 3The following conditions must be met: any temperature value in the first temperature interval T1 is less than any temperature value in the second temperature interval T2, and any temperature in the second temperature interval T2 is less than any temperature value in the third temperature interval T3, and the first air volume W 1 < Second air volume W 2 ≤The third air volume W 3 .

[0045] Therefore, this heating control method makes the air volume, the current ambient temperature and the heating power of the heating element have a corresponding response relationship. Specifically, when the heating element is at the maximum heating power, the air flow is minimal, and the hot air is inhaled to discharge the hotter air, thereby heating the air around the heating element to the maximum extent, avoiding the situation in the prior art where a large amount of incompletely heated air is blown to the user. After the air around the heating element is fully heated, the air volume is increased so that more heated air is blown to the user, improving the user's physical comfort. Experiments have shown that when the heating elements of the same specifications are used in the same space to respectively operate the heating control method proposed in this embodiment and the commonly used control scheme in the prior art, the temperature rise effect of the heating control method proposed in this embodiment is 4°C-12°C higher than that of the prior art at each stage.

[0046] In this embodiment, the change of the air volume is achieved by adjusting the fan speed, so the maximum air volume is the air volume corresponding to the maximum speed. Further, by changing the conduction angle of the thyristor to change the voltage of the fan, the power of the fan is controlled to change the fan speed.

[0047] In other implementations, the change in the air volume is also achieved by adjusting the flow area of ​​the air inlet, the flow area of ​​the air outlet, or the flow area of ​​the air duct connecting the air inlet and the air outlet. Specifically, a baffle is set in any one or more of the air inlet, the air outlet, or the air duct, and the flow area at each location is changed by controlling the opening and closing size of the baffle. When the baffle is opened to the maximum extent, the flow area is the largest and the corresponding air volume is the largest. On the contrary, the air volume is the smallest.

[0048] Embodiment 2

[0049] Combine the following Figure 2-Figure 4 The present invention is described in detail.

[0050] A heating device includes an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, wherein a heating element, a fan, and a temperature sensor are arranged in the air duct; the device also has a rapid heating mode, so that the heating element and the fan are suitable for the heating control method described above. When in use, in the initial stage of heating by the heating element, the hot air flows less, and by inhaling hot air and discharging hotter air, a rapid heating effect within the area is achieved, giving the user an obvious sense of warmth. Preferably, the fan blows the hot air to a height between 1.2m and 1.8m from the ground, wherein, based on the average adult height of 1.7m, 1.2m corresponds to the position around the waist of the human body, and 1.8m corresponds to the position around the head of the human body, so that the hot air covers the area from the waist to the head of the human body, ensuring the user's experience.

[0051] In this embodiment, the heating element has a temperature resistance characteristic in which the resistance first decreases and then increases as the temperature increases within the rated range. The temperature resistance characteristic is as follows: Figure 2 As shown, the heating power of the heating element increases first and then decreases as the temperature rises, and the air volume is first small and then large, which quickly increases the temperature of the local air, and then diffuses the heated air into the environment, achieving a faster temperature rise under the same conditions. Specifically, as the temperature gradually rises, the resistance of the heating element gradually decreases until it is the minimum, such as Figure 2 As shown in the T1 section, the heating power changes during the heating process are as follows: Figure 1 Medium 0-t 1 stage; as the temperature rises, the resistance of the heating element gradually increases, such as Figure 2 As shown in the T2 segment, the corresponding time is Figure 1 Medium 1 -t 2 stage; until the resistance gradually increases to the rated maximum value, the power is stable, the ambient temperature is at T3, and the corresponding time is Figure 1 Medium 2 -t 3 The maximum rated resistance of the heating element does not exceed T N Point, T N These points are common knowledge in this field and will not be elaborated on.

[0052] In this embodiment, a thyristor is also included. The thyristor is connected to the fan. The thyristor controls the speed of the fan by changing the conduction angle of the thyristor based on the ambient temperature monitored by the temperature sensor, thereby realizing stepless speed regulation of the air heating outlet. At the same time, the thyristor is used to reduce the power of the fan from the original 35W to 31W, and the rapid heating effect is better. The principle of controlling the fan speed through thyristor is as follows:

[0053] The conduction angle of the thyristor is achieved by adjusting the phase of the trigger pulse. The trigger pulse is ensured by the charging and discharging of the capacitor. The faster the charging and discharging speed of the capacitor, the wider the peak pulse, the earlier the first pulse is emitted, the larger the conduction angle of the thyristor, and the higher the output voltage; conversely, the slower the charging and discharging speed of the capacitor, the smaller the conduction angle of the thyristor, and the lower the output voltage, thereby changing the voltage at both ends of the fan and adjusting the speed of the fan.

[0054] In this embodiment, a start / stop button 20 for starting the quick heating mode and a wind speed button 30 for controlling the fan speed are also included. The wind speed button 30 has a higher priority for controlling the air volume than the control priority for the air volume in the heating control method, so as to meet the diverse needs of users. Specifically, when the quick heating mode is started, the fan speed gradually runs according to the first air volume, the second air volume and the third air volume in the aforementioned heating control method. At any time when the heating control method is running, the user can adjust the air volume through the wind speed button 30 to meet the diverse needs of users.

[0055] In this embodiment, a display screen 40 for displaying the current ambient temperature is also included.

[0056] In this embodiment, a control panel 10 is included. Figure 4 As shown, the control panel 10 is provided with a start / stop button 20, a wind speed button 30 and a display screen 40. Further, the control panel 10 is also provided with one or more of a lighting button 50 for turning on lighting, a night light button 60 for turning on a night light, and a ventilation button 70 for turning on ventilation.

[0057] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating control method for controlling air volume, characterized in that: The steps include: S1, from start to t1, the heating power of the heating element increases with the temperature until it reaches the maximum heating power, and the air output is the first air output; S2, from period t1 to period t2, the heating power of the heating element decreases as the temperature increases, and the air volume is the second air volume; From S3 to the end of t2, the heating power of the heating element reaches a steady state, and the air output is the third air output; Wherein, the first air volume<the second air volume≤the third air volume.

2. A heating control method according to claim 1, characterized in that: It also includes a temperature sensor, wherein the current ambient temperature monitored by the temperature sensor from the start-up to the time period t1 is in a first temperature range, and the air flow corresponding to the first temperature range is the first air flow; The current ambient temperature monitored by the temperature sensor during the period from t1 to t2 is in the second temperature range, and the air flow corresponding to the second temperature range is the second air flow; The current ambient temperature monitored by the temperature sensor from the time period t2 to the end is in the third temperature range, and the air flow corresponding to the third temperature range is the third air flow; Any temperature value in the first temperature interval is lower than any temperature value in the second temperature interval, and any temperature in the second temperature interval is lower than any temperature value in the third temperature interval.

3. A heating control method according to claim 1 or 2, characterized in that: The change in the air volume is achieved by adjusting the flow area of ​​the air inlet, the flow area of ​​the air outlet, or the flow area of ​​the air duct connecting the air inlet and the air outlet; or the change in the air volume is achieved by adjusting the fan speed.

4. A heating device, characterized in that: It includes an air inlet, an air outlet and an air duct connecting the air inlet and the air outlet, wherein the air duct is provided with a heating element, a fan and a temperature sensor; it also has a quick heating mode, so that the heating element and the fan are suitable for the heating control method as described in any one of claims 1-3.

5. A heating device as claimed in claim 4, characterized in that: The heating element has a temperature resistance characteristic in which the resistance thereof first decreases and then increases as the temperature increases within a rated range.

6. A heating device as claimed in claim 4, characterized in that: It also includes a thyristor, which is connected to the fan. The thyristor controls the rotation speed of the fan by changing the conduction angle of the thyristor based on the ambient temperature monitored by the temperature sensor.

7. A heating device as claimed in claim 4, characterized in that: It also includes a start / stop button for starting the rapid heating mode, and a wind speed button for controlling the fan speed.

8. A heating device according to claim 7, characterized in that: The control priority of the wind speed button on the air output volume is higher than the control priority of the air output volume in the heating control method.

9. A heating device according to claim 7, characterized in that: Also included is a display for showing the current ambient temperature.

10. A heating device according to claim 9, characterized in that: It comprises a control panel, and the control panel is provided with the start / stop button, the wind speed button and a display screen.

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