A gasified alcohol fireplace and control method thereof

Abstract

The present invention discloses a gasified alcohol fireplace and a control method thereof, wherein the gasified alcohol fireplace comprises a shell, a burner, a gasification chamber, a balancing chamber and a liquid supply device, wherein a flame ejection port and an ignition device are arranged on the burner, the burner is directly connected to the gasification chamber, the balancing chamber is connected to the gasification chamber, a heating element is arranged on the gasification chamber, and the liquid level height range of the balancing chamber is consistent with the liquid level height range of the gasification chamber, and an electric control device controls the liquid supply device to supply alcohol fuel to the balancing chamber at a stable average rate and enter the gasification chamber, and a liquid level detection device is arranged in the balancing chamber, and the heating power of the heating element is dynamically adjusted so that the liquid level in the balancing chamber is always within a set range. Since the alcohol fuel is delivered to the balancing chamber at a stable average rate, the overall alcohol gasification rate of the gasified alcohol fireplace is controlled to be in a relatively stable state, and the flame is kept in a stable state.

Description

Technical Field

[0001] The invention relates to the technical field of alcohol fireplaces, and in particular to an alcohol fireplace which gasifies alcohol and then burns it, and a control method thereof. Background Art

[0002] Traditional fireplace heating mostly uses solid fuel for heating. Due to the large storage volume of solid fuel itself, traditional fireplaces occupy a large area, and have low combustion efficiency and poor energy saving effect. There are also some gas fireplaces that use gas fuel as energy, but since gas fireplaces usually need to be connected to pipes and require the installation of special exhaust chimneys, the requirements for the house structure are complex. If there is no special structure reserved for installing gas fireplaces during house decoration, it is generally difficult to renovate them later.

[0003] With the continuous development of science and technology, alcohol fuel has become a less polluting, renewable clean energy. It is lighter and occupies less space than solid fuels with the same amount of heat energy. It is also more convenient to store than gas fuels and requires smaller pipes. Therefore, it has attracted more and more attention. In order to make the alcohol fuel burn fully, the alcohol is usually gasified first and then passed into the burner for combustion, such as a liquid fuel gasification combustion fireplace mentioned in CN201110219779.2.

[0004] However, the gasification process of the current alcohol gasification combustion fireplace is relatively simple. The fuel tank directly supplies alcohol fuel to the gasification chamber, and the alcohol in the gasification chamber is maintained within a liquid level range, and then directly heated and gasified. This heating method requires the arrangement of relevant detection and control components in the gasification chamber to maintain the alcohol fuel within a liquid level range, and the gasification of the alcohol fuel in the gasification chamber needs to be heated to above the gasification temperature of alcohol, which is relatively high. The relevant detection and control components are not suitable for working under high temperature environments. In addition, not only gasification is required in the gasification chamber, but also relevant detection and control components need to be arranged, which takes up a lot of space, has a large inner cavity volume, and can accommodate a lot of alcohol fuel. Moreover, the method of controlling gasification is relatively extensive, the heating and gasification are violent, and the power is unstable, so that the flame of the fireplace fluctuates, which not only affects the heating effect, but also reduces the overall viewing effect of the flame, and even gasification boiling produces bubbles overflowing the flame ejection port, and the flame abnormally exceeds the safe height, threatening the personal safety of the user. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the technical defects of the background technology and provide a gasified alcohol fireplace and a control method thereof. After the present invention is used in the gasified alcohol fireplace, a balance chamber is added, and alcohol fuel is supplied to the gasification chamber from the balance chamber, and the liquid supply device maintains stability by controlling the rate of liquid supply to the balance chamber. The alcohol fuel added per unit time is certain, and the average rate of adding alcohol fuel is constant, thereby controlling the overall alcohol gasification rate of the gasified alcohol fireplace to be in a relatively stable state, and making the flame in a stable and controllable state.

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

[0007] A gasified alcohol fireplace comprises a shell, a burner, a gasification chamber, a balancing chamber and a liquid supply device; the burner is connected to the gasification chamber through a steam outlet, and the main body of the burner is arranged higher than the gasification chamber and the steam outlet, so as to facilitate the flow of partially condensed fuel back to the gasification chamber for re-gasification when there is partially condensed fuel in the burner; the burner is provided with a flame ejection port and an ignition device, and the ignition device is arranged close to the flame ejection port; the gasification chamber is provided with a fuel addition port A and a heating element; the balancing chamber is provided with a fuel addition port B and a fuel output port A, and the fuel output port A is connected to the fuel addition port A through a pipeline, so that the liquid level of the balancing chamber changes synchronously with the liquid level of the gasification chamber; the liquid level of the balancing chamber is maintained at a set working liquid level; the liquid supply device is connected to the fuel addition port B on the balancing chamber, and can supply liquid to the balancing chamber; the burner, the gasification chamber and the balancing chamber are all accommodated in the shell.

[0008] Furthermore, the shell is provided with a flame outlet, and the flame outlet faces the flame ejection port, so that the flame ejection port on the burner and the area above it can be observed from outside the shell.

[0009] Furthermore, the heating element is arranged inside the vaporization chamber.

[0010] Furthermore, the liquid supply device includes a liquid storage container and a power device for conveying alcohol fuel, and pipelines for connecting the various devices; the input port of the power device is connected to the liquid storage container, and the output port of the power device is connected to the fuel addition port B on the balance chamber; the liquid storage container can be located inside the shell or outside the shell, and preferably, the power device can be an infusion pump.

[0011] Furthermore, the heating element can vaporize the alcohol fuel inside the vaporization chamber. The heating element can be implemented by various electric heating methods in the prior art. Preferably, the heating element is a metal electric heating tube or a PTC heating element or a heating resistance wire or an electromagnetic induction heating coil, etc. Preferably, the heating element is arranged in the middle of the vaporization chamber so that the alcohol fuel contacts all heating surfaces of the heating element, and the vaporization process of the alcohol fuel is more uniform.

[0012] Furthermore, a liquid level detection device is provided in the internal cavity of the balance chamber. The liquid level detection device can be an existing liquid level detection device such as a photoelectric type, a resistance type or a reed switch float type. The liquid level detection device can detect the liquid level height inside the balance chamber, and the liquid level height of the balance chamber is consistent with the liquid level height of the vaporization chamber.

[0013] Furthermore, in order to realize automatic ignition control and power control, preferably, the gasified alcohol fireplace also includes an electronic control device, which can control whether the heating element is working and the power size and control the rate at which the power device delivers alcohol fuel to the balance chamber. The electronic control device is also connected to the liquid level detection device inside the balance chamber, and the liquid level height inside the balance chamber is detected in real time by the liquid level detection device. The ignition device is also connected to the electronic control device, and the electronic control device can control the ignition device to perform ignition operation.

[0014] Furthermore, a solenoid valve is provided on the pipeline between the fuel addition port A and the fuel output port A, and the solenoid valve is a normally closed solenoid valve.

[0015] Furthermore, a flame detection device is provided on the burner, and the flame detection device is connected to the electronic control device.

[0016] Furthermore, a furnace cavity is formed inside the shell, the flame outlet is inside the furnace cavity, a furnace door is arranged in front of the furnace cavity, and a flame observation port is arranged on the furnace door.

[0017] A control method for a gasified alcohol fireplace comprises the following steps:

[0018] Step 1: When starting the ignition, the electronic control device issues a command to drive the power device to transport alcohol fuel from the liquid storage container to the balancing chamber, and controls the rate of transporting the alcohol fuel to maintain stability according to the set power size, and adds the same amount of alcohol fuel per unit time. At the same time, the liquid level detection device detects whether the liquid level inside the cavity of the balancing chamber is within the set working liquid level range. Once the liquid level inside the cavity of the balancing chamber reaches the set working liquid level, it means that the liquid level of the vaporization chamber also reaches the set working liquid level. Then, the electronic control device controls the heating element to heat so that the alcohol fuel inside the vaporization chamber is vaporized. Once the alcohol fuel inside the vaporization chamber is vaporized into alcohol vapor, it enters the internal cavity of the burner through the vapor outlet and then sprays out from the flame outlet. The electronic control device can control the ignition device to ignite. Once the alcohol vapor is sprayed from the flame outlet, the alcohol vapor can be immediately ignited by the ignition device, so that the vaporized alcohol fireplace can burn.

[0019] Step 2: During normal operation, the electronic control device always maintains the rate at which the power device delivers alcohol fuel in a stable state. The stable state means that the alcohol fuel is a periodic function of intermittent addition at continuous intervals, that is, alcohol fuel is added for a period of time, and then stopped for a period of time, and alcohol fuel is added intermittently and repeatedly in this way to maintain a stable state. In the stable state, the average rate at which the power device delivers alcohol fuel remains constant. For the sake of description, the time interval during which the power device adds alcohol fuel is called the adding interval, and the time interval during which the power device stops adding alcohol fuel is called the stopping interval; and the alcohol fuel is added in real time through the liquid The level detection device detects the liquid level height inside the balancing chamber. When the power device is in the stop interval, once it is detected that the liquid level height inside the balancing chamber is higher than the set working liquid level, the electronic control device increases the heating power of the heating element, thereby accelerating the vaporization rate in the vaporization chamber; when the power device is in the addition interval, once it is detected that the liquid level height inside the balancing chamber is lower than the set working liquid level, the electronic control device reduces the heating power of the heating element, thereby slowing down the vaporization rate in the vaporization chamber; and the time point of triggering the high liquid level in the balancing chamber can be determined by detecting the trigger time point of the trigger high liquid level in the stop interval. The degree of increase in the power of the heating element is determined by detecting the triggering time point of the low liquid level in the addition interval of the liquid level inside the balancing chamber to determine the degree of reduction in the power of the heating element. By dynamically increasing or decreasing the heating power of the heating element, the liquid level inside the balancing chamber is always at the normally set working liquid level, and the rate at which the power device delivers the alcohol fuel is always in a stable state. The alcohol fuel added per unit time is constant, and the power of the gasified alcohol fireplace is in a relatively stable state, and the burning flame is also in a relatively stable state. When the power of the gasified alcohol fireplace needs to be adjusted, it is only necessary to adjust the power of the gasified alcohol fireplace by The electronic control device only needs to adjust the average rate of the power device in a stable state of conveying alcohol fuel. Once the power setting is adjusted, the power device conveys alcohol fuel to the balancing chamber at a new average rate. While adjusting the power, the electronic control device will adjust the heating power of the heating element as a whole according to the amplitude of the power adjustment, so that the heating power of the heating element matches the gasification speed of the gasified alcohol fireplace, and the final heating power of the heating element is determined by the liquid level detection device through fine-tuning according to the liquid level changes inside the balancing chamber, so that the liquid level height of the alcohol fuel inside the balancing chamber is within the set working liquid level range.

[0020] Step 3: When stopping working, the electronic control device sends out a command to stop the power device from delivering alcohol fuel and stop the heating element from working, thereby shutting down the gasified alcohol fireplace.

[0021] In the above technical solution, when the power device supplies alcohol fuel to the balancing chamber, it supplies alcohol fuel to the balancing chamber in a stable state. The stable state means that the function of the flow rate of the alcohol fuel delivered by the power device and time is a periodic function, that is, the amount of alcohol fuel added by the power device per unit time is certain, that is, the average rate is constant.

[0022] Furthermore, the stable state of the power device delivering alcohol fuel to the balancing chamber may be continuous addition at a constant rate, that is, the time width of the stop interval tends to zero, so that it is always in the addition interval.

[0023] Furthermore, the stable state of the alcohol fuel delivered by the power device to the balancing chamber may be a general periodic function, such as a square wave function, a sine function or a sawtooth function.

[0024] Furthermore, the period of the periodic function of the stable state of the power unit conveying alcohol fuel to the balancing chamber is 5 seconds to 3 minutes, and the volumes of the vaporization chamber and the balancing chamber and the maximum working liquid level and the minimum working liquid level of the balancing chamber are determined by flow calculation according to the minimum period of the periodic function, so that when the internal cavity of the balancing chamber is at the lowest liquid level, the alcohol fuel added by the power unit in one cycle will not cause the alcohol fuel inside the balancing chamber to exceed the maximum liquid level.

[0025] Furthermore, a flame detection device is provided on the burner, and the flame detection device is connected to the electronic control device to detect whether the flame on the burner is successfully ignited during ignition and whether the flame is abnormal during normal operation. Once the flame abnormality is detected, the power device to transport alcohol fuel and the heating element are immediately stopped, and the gasified alcohol fireplace is closed.

[0026] Furthermore, when the gasified alcohol fireplace is closed, although the heating element stops heating, a certain temperature will still remain in the gasification chamber, and the remaining alcohol fuel in the balancing chamber and the gasification chamber will continue to gasify. In this way, when the gasified alcohol fireplace is closed by the electronic control device, the continued combustion of the alcohol fuel cannot be stopped immediately. In order to stop the combustion of the alcohol fuel as soon as possible after the gasified alcohol fireplace is closed, a solenoid valve is provided on the pipeline between the fuel addition port A and the fuel output port A. Preferably, the solenoid valve is a normally closed solenoid valve, that is, it is turned on to allow liquid to pass through; it is turned off to prevent liquid from passing through. In this way, the alcohol fireplace only needs to burn the alcohol fuel in the gasification chamber to stop fuel combustion, and the alcohol fuel in the balancing chamber will not continue to participate in combustion after the electronic control device issues a shutdown command.

[0027] Furthermore, the shell is a cavity with an internal furnace cavity, the flame outlet is arranged inside the furnace cavity, and a furnace door with a flame observation port is also arranged in front of the shell, so that the flame outlet and the area above it can be observed through the flame observation port, that is, the flame burning in the furnace cavity can be viewed; the flame observation port can be directly empty, and the furnace cavity is directly connected to the outside of the furnace door to facilitate better heat diffusion; transparent glass can also be installed on the flame observation port, so that the carbon dioxide generated by combustion cannot diffuse to the space where the use environment is located through the flame observation port, and the heat generated by combustion will not be blocked too much; a smoke exhaust device is arranged on the back, top or side of the shell, and the smoke exhaust device is connected to the chimney pipe system of the house, and the carbon dioxide generated by the combustion of the gasified alcohol fireplace is discharged to the outside of the house through the smoke exhaust device.

[0028] Basic principles of the present invention:

[0029] Theoretically, to achieve stable combustion of the alcohol fireplace flame, it is only necessary to keep the power device at a stable rate during infusion, and the heating element uses a constant power to vaporize the alcohol. But in reality, even if the heating element uses a constant power, the temperature of the vaporization chamber will gradually rise during the long-term operation of the alcohol fireplace, resulting in a faster vaporization rate, and thus unstable flame combustion will occur.

[0030] In order to solve this problem, a liquid level detection device can be added to the vaporization chamber to maintain the liquid level at the set working level, and the heating element uses a constant power to vaporize the alcohol. However, in fact, the vaporization chamber needs to be heated to a temperature above the vaporization temperature of the alcohol to vaporize the alcohol fuel, which is relatively high. The relevant detection and control components are not suitable for working in a high temperature environment. Therefore, the above technical solutions all have defects.

[0031] The present invention takes a different approach, moving the liquid level detection device originally set in the vaporization chamber to an independent balance chamber that is not affected by temperature factors. By strictly controlling the liquid level height in the balance chamber at the set working liquid level, the U-tube principle is used to synchronously feed back to the vaporization chamber, so as to achieve synchronous changes in the liquid level of the vaporization chamber and the liquid level of the balance chamber, so that the liquid level of the vaporization chamber is also maintained at the set working liquid level. Among them, the heating power of the heating element is slowed down when it is lower than the working liquid level, and the heating power of the heating element is increased when it is higher than the working liquid level. By dynamically changing the heating power of the heating element, the alcohol fuel in the balance chamber is always within the set working range. Among them, in the process of dynamically adjusting the heating power of the heating element, from a microscopic point of view, the alcohol vaporization rate is not in a stable state, but sometimes fast and sometimes slow. However, from a macroscopic point of view, due to the stable infusion power and stable working liquid level, the overall alcohol vaporization rate is also in a relatively stable state, so the stability of flame combustion is greatly improved compared with the prior art.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] A gasified alcohol fireplace provided by the present invention adds a balancing chamber, and controls a power device to transport alcohol fuel to the balancing chamber in a stable state with a constant average rate. In addition, a liquid level detection device is arranged inside the balancing chamber, and the heating power of the heating element is dynamically changed so that the alcohol fuel in the balancing chamber is always within a set working range, thereby ensuring the smooth gasification of the alcohol fuel inside the gasification chamber, so that the overall gasification rate of alcohol in the gasified alcohol fireplace is maintained at a relatively constant level, and is stably supplied to the burner for combustion, so that the stability of the flame generated by the combustion is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the working principle of Embodiment 1 of the present invention;

[0035] Figure 2 It is a schematic diagram of the three-dimensional structure of Example 1 of the present invention;

[0036] Figure 3 This is a longitudinal half-section structural schematic diagram of Example 1 of the present invention;

[0037] Figure 4 This is a schematic diagram of a transverse half-section structure of Example 1 of the present invention;

[0038] Figure 5 It is a schematic three-dimensional assembly diagram of a burner and a gasification chamber according to Example 1 of the present invention;

[0039] Figure 6 It is a schematic diagram of the assembly half-section structure of the burner and the gasification chamber of Example 1 of the present invention;

[0040] Figure 7 It is a schematic diagram of a flow curve of alcohol fuel delivered to a balance chamber by a power device according to Embodiment 1 of the present invention;

[0041] Figure 8 It is a schematic diagram of the longitudinal half-section structure of the burner and the gasification chamber of Example 2 of the present invention;

[0042] Fig. 9 It is a schematic three-dimensional assembly diagram of a burner and a gasification chamber according to Embodiment 2 of the present invention;

[0043] Fig.10 It is a schematic diagram of a transverse half-section structure of the burner and gasification chamber of Example 2 of the present invention;

[0044] Fig.11 It is a schematic three-dimensional assembly diagram of a burner and a gasification chamber according to Embodiment 3 of the present invention;

[0045] Fig.12It is a partial enlarged schematic diagram of part A of Example 3 of the present invention;

[0046] Fig.13 It is a schematic diagram of the longitudinal half-section structure of the burner and the gasification chamber of Example 3 of the present invention;

[0047] Fig.14 It is a schematic diagram of the three-dimensional structure of embodiment 4 of the present invention;

[0048] Fig.15 This is a schematic diagram of a half-section structure of Example 4 of the present invention;

[0049] Fig.16 This is a schematic diagram of the decomposed structure of Example 4 of the present invention;

[0050] Fig.17 It is a schematic diagram of a flow curve of alcohol fuel delivered to a balance chamber by a power device according to Embodiment 5 of the present invention;

[0051] Fig.18 This is another schematic diagram of a flow curve for delivering alcohol fuel to a balance chamber by the power unit of Example 5 of the present invention.

[0052] The corresponding component names of the various reference numerals in the figure are:

[0053] 1-shell; 11-flame outlet; 12-furnace chamber; 13-flame observation port; 14-furnace door; 15-smoke exhaust device; 2-burner; 21-flame outlet; 22-ignition device; 23-flame detection device; 3-gasification chamber; 31-steam outlet; 32-fuel addition port A; 33-heating element; 4-balance chamber; 41-fuel addition port B; 42-fuel output port A; 43-liquid level detection device; 5-liquid supply device; 51-liquid storage container; 52-power device; 6-solenoid valve; 7-electronic control device. DETAILED DESCRIPTION

[0054] In order to better understand the content of the present invention, further description is given below in conjunction with specific embodiments and accompanying drawings. It should be understood that these embodiments are only used to further illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content described in the present invention, those skilled in the art may make some non-essential changes or adjustments to the present invention, which still belong to the protection scope of the present invention.

[0055] Example 1

[0056] like Figures 1 to 7As shown, a gasification alcohol fireplace includes a shell 1, a burner 2, a gasification chamber 3, a balancing chamber 4 and a liquid supply device 5. In this embodiment, the burner 2 is long and strip-shaped. The burner 2 is directly connected to the gasification chamber 3 through a steam outlet 31. The steam outlet 31 is one or more, and the main body of the burner 2 is higher than the gasification chamber 3 and the steam outlet 31. The burner 2 is also provided with a flame outlet 21. The flame outlet 21 is multiple and is spaced apart along the length direction of the burner 2. The gasification chamber 3 is provided with a fuel addition port A 32. The balancing chamber 4 is provided with a fuel addition port B 41 and a fuel output port A 42. The fuel output port A 42 is connected to the fuel addition port A 32 through a pipeline. A solenoid valve 6 is also provided on the pipeline between the liquid supply device 51 and the fuel addition port A32. In this embodiment, the solenoid valve 6 is a normally closed solenoid valve. The liquid supply device 5 includes a liquid storage container 51 and a power device 52. In this embodiment, the power device 52 is an infusion pump. The input port of the power device 52 is connected to the liquid storage container 51, and the output port of the power device 52 is connected to the fuel addition port B41 on the balance chamber 4. A heating element 33 is provided on the vaporization chamber 3. In order to make the heating element 33 uniformly heat the vaporization chamber 3 and the alcohol fuel inside the vaporization chamber 3, in this embodiment, the heating element 33 is arranged inside the vaporization chamber 3, and thermal conductive silicone grease is applied between the heating element 33 and the inner wall of the vaporization chamber 3 to make the heat conduction uniform.

[0057] An ignition device 22 is provided on the burner 2, and the ignition device 22 is arranged near the flame outlet 21; a liquid level detection device 43 is provided inside the balancing chamber 4, and the liquid level detection device 43 can detect the liquid level height inside the balancing chamber 4, so that the liquid level of the internal cavity of the balancing chamber 4 is within the set working liquid level range, and the liquid level height of the balancing chamber 4 is consistent with the liquid level height of the gasification chamber 3.

[0058] The gasified alcohol fireplace also includes an electronic control device 7, which can control whether the heating element 33 is working and the power size and control the rate at which the power device 52 conveys alcohol fuel to the balancing chamber 4. The electronic control device 7 is also connected to the liquid level detection device 43 inside the balancing chamber 4, and the liquid level height inside the balancing chamber 4 is detected in real time through the liquid level detection device 43. The ignition device 22 is also connected to the electronic control device 7, and the electronic control device 7 can control the ignition device 22 to perform an ignition operation.

[0059] In this embodiment, the liquid storage container 51, the power device 52, the burner 2, the vaporization chamber 3, the balance chamber 4, the solenoid valve 6 and the electronic control device 7 are all arranged inside the shell 1, and a flame outlet 11 is provided on the upper surface of the shell 1. The flame outlet 11 is opposite to the flame outlet 21, so that the flame outlet 21 and the area above it can be observed through the flame outlet 11.

[0060] In the gasified alcohol fireplace of this embodiment, a flame detection device 23 is also provided on the burner 2, and the flame detection device 23 is connected to the electronic control device 7, and can detect whether the flame of the flame outlet 21 on the burner 2 is normal; when starting ignition, the electronic control device 7 issues a command to drive the power device 52 to transport alcohol fuel from the liquid storage container 51 to the balance chamber 4, and controls the rate of transporting alcohol fuel to maintain stability according to the set power size, such as Figure 7 As shown, the alcohol fuel delivered by the power device 52 is a periodic function of intermittent delivery (a square wave function in this embodiment), and the minimum period is 5 seconds to 3 minutes. A constant amount of alcohol fuel is added in each minimum period. While delivering the alcohol fuel to the balancing chamber 4, the solenoid valve 6 is opened to connect the balancing chamber 4 with the vaporization chamber 3 through the solenoid valve 6. At the same time, the liquid level detection device 43 is used to detect whether the liquid level of the internal cavity of the balancing chamber 4 is within the set working liquid level range. Once the liquid level of the internal cavity of the balancing chamber 4 reaches the low liquid level of the set working liquid level, the electronic control device 7 controls the heating element 33 to start heating, so that the alcohol fuel inside the vaporization chamber 3 is vaporized. Once the alcohol fuel in the vaporization chamber 3 is After the alcohol fuel is gasified into alcohol vapor, it enters the internal cavity of the burner 2 through the vapor outlet 31 and is then ejected from the flame outlet 21; while the alcohol vapor is ejected from the flame outlet 21, the electronic control device 7 controls the ignition device 22 to ignite, so that the gasified alcohol fireplace can burn and form a burning flame at and above the flame outlet 11; while the ignition device 22 is igniting, the flame detection device 23 detects whether the flame is successfully ignited. Once the flame detection device 23 successfully detects the flame, the ignition device 22 is stopped from igniting and the normal working state is entered. Otherwise, it is judged as an ignition failure, the gasified alcohol fireplace is closed, and an alarm is given.

[0061] During normal operation, Figure 7As shown, the electronic control device 7 always maintains the rate at which the power device 52 delivers alcohol fuel in a stable state. The stable state means that the alcohol fuel is added intermittently at continuous intervals, that is, the alcohol fuel is added for a period of time, and the addition of alcohol fuel is stopped for a period of time, and the alcohol fuel is added intermittently and repeatedly, and a stable state is maintained. In the stable state, the average rate at which the power device delivers alcohol fuel is maintained constant, that is, the amount of alcohol fuel added per unit time is stable. For the convenience of description, the time interval during which the power device adds alcohol fuel is called the adding interval, and the time interval during which the power device stops adding alcohol fuel is called the stopping interval; and the liquid level detection device 4 is used in real time to detect the alcohol fuel. 3 Detecting the liquid level height inside the balancing chamber 4 When the power device 52 is in the stop interval, if it is detected that the liquid level height inside the balancing chamber 4 is higher than the set working liquid level, the electronic control device 7 increases the heating power of the heating element 33, thereby accelerating the gasification rate in the gasification chamber 3; when the power device 52 is in the addition interval, if it is detected that the liquid level height inside the balancing chamber 4 is lower than the set working liquid level, the electronic control device 7 reduces the heating power of the heating element 33, thereby slowing down the gasification rate in the gasification chamber 3; and the degree of increasing the power of the heating element 33 can be determined by detecting the triggering time point of the triggering high liquid level of the liquid level inside the balancing chamber 4 in the stop interval, and the degree of increasing the power of the heating element 33 can be determined by detecting the triggering time point of the triggering high liquid level of the liquid level inside the balancing chamber 4 in the addition interval. The degree of reduction in the power of the heating element 33 is determined by the triggering time point of the low liquid level during the triggering period, and the heating power of the heating element 33 is dynamically accelerated or slowed down, so that the liquid level inside the balancing chamber 4 is always at the normally set working liquid level, and the rate at which the power device 52 delivers the alcohol fuel is always in a stable state, and the alcohol fuel added per unit time is constant, then the power of the gasified alcohol fireplace is in a relatively stable state, and the burning flame is also in a relatively stable state; and when it is necessary to adjust the power of the gasified alcohol fireplace, it is only necessary to adjust the average rate of the stable state of the alcohol fuel delivered by the power device 52 through the electronic control device 7. Once the power setting is adjusted, the power device 52 The device 52 delivers alcohol fuel to the balancing chamber 4 at a new average rate, thereby achieving power adjustment; and in the present embodiment, the volumes of the vaporization chamber 3 and the balancing chamber 4 and the highest and lowest working liquid levels of the balancing chamber 4 are determined by calculation based on the flow rate added by the power device 52 within the minimum cycle time of the periodic function, that is, when the internal cavity of the balancing chamber 4 is at the lowest liquid level, the alcohol fuel added by the power device 52 in one cycle will not cause the alcohol fuel inside the balancing chamber 4 to exceed the highest liquid level, thereby allowing components such as the liquid level detection device 43 and the electronic control device 7 to have sufficient corresponding time to process and adjust the heating power of the heating element 33, so that the liquid level height inside the balancing chamber 4 tends to change smoothly.

[0062] When stopping work, the electronic control device 7 sends a command to stop the power device 52 from delivering alcohol fuel, stop the heating element 33 from working, and close the solenoid valve 6, so that the alcohol fuel in the balance chamber 4 cannot enter the vaporization chamber. Under the effect of the residual temperature of the vaporization chamber 3, after the alcohol fuel in the vaporization chamber 3 is used up, the combustion of the vaporized alcohol fireplace fuel is shut down; or the temperature of the vaporization chamber 3 slowly drops below the alcohol vaporization temperature, and the alcohol fuel inside the vaporization chamber 3 has not been completely used up. At this time, since the temperature of the vaporization chamber 3 is not enough to continue to vaporize the alcohol fuel, the combustion of the vaporized alcohol fireplace fuel is also shut down.

[0063] Example 2

[0064] like Figures 8 to 10 As shown, a gasification alcohol fireplace is different from Example 1 in that: the burner 2 is long and arranged at the upper part of the gasification chamber 3, the burner 2 is connected to the gasification chamber 3 through a certain pipeline, and the connected pipeline serves as a steam outlet 31, so that the burner 2 is not in direct contact with the gasification chamber 3. When working, the temperature generated by the combustion of the burner 2 is not easily transmitted to the gasification chamber 3, thereby not affecting the gasification temperature of the gasification chamber 3.

[0065] In addition, the ignition device 22 and the flame detection device 23 are respectively arranged at the two ends of the burner 2 and are located on the same axis as the flame outlet 21, so that it can better ensure and detect that all the flame outlets 21 on the entire burner 2 can eject alcohol vapor and be ignited.

[0066] Example 3

[0067] like Figures 11 to 13 As shown, a gasified alcohol fireplace, compared with Example 1, is different in that: the burner 2 is arranged to be a curved multi-segment fold line, and the apertures of the flame outlets 21 on the burner 2 are arranged to be of different sizes, so that the flame produced by the combustion can be better made more tortuous and staggered, and the effect of forming a more vigorous local flame can be formed, and the ignition device 22 and the flame detection device 23 are respectively arranged at both ends of the burner 2 and are on the same axis as the flame outlet 21, so that it can better ensure and detect that the flame outlets 21 on the entire burner 2 can eject alcohol vapor and be ignited.

[0068] Example 4

[0069] like Figures 14 to 16As shown, a gasified alcohol fireplace, compared with Example 1, is different in that: the shell 1 is a cavity with an internal furnace cavity 12, the flame outlet 11 is arranged in the internal furnace cavity 12 of the shell 1, the liquid storage container 51, the power device 52, the burner 2, the gasification chamber 3, the balance chamber 4, the solenoid valve 6 and the electronic control device 7 are all arranged at the lower part of the interior of the shell 1, and the burner 2 is below the flame outlet 11, and the flame outlet 11 is opposite to the flame ejection port 21.

[0070] A furnace door 14 with a flame observation port 13 is also provided in front of the shell 1, so that the flame outlet 11 and the area above it can be observed through the flame observation port 13, that is, the flame burning in the furnace cavity 12 can be viewed; a smoke exhaust device 15 is also provided on the back of the shell 1, and exhaust gases such as carbon dioxide generated by combustion can be discharged to the outside through the smoke exhaust device 15.

[0071] The flame observation port 13 can be directly empty, so that the furnace cavity 12 is directly connected to the outside of the furnace door 14 to better diffuse the heat; or a transparent glass can be installed on the flame observation port 13 to prevent the carbon dioxide generated by the combustion from diffusing to the space where the use environment is located through the flame observation port 13, while the heat generated by the combustion will not be blocked too much.

[0072] Example 5

[0073] like Figures 17-18 As shown, a gasified alcohol fireplace is different from Example 1 in that: the power device 52 delivers alcohol fuel to the balance chamber 4 in a stable state, and the relationship between the flow rate and time can be as follows: Fig.17 The sawtooth function can also be Fig.18 Waveform function.

[0074] The above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by a person skilled in the art within the spirit and scope of the present invention shall also fall within the protection scope of the present invention.

Claims

1. A gasified alcohol fireplace, characterized in that: The invention comprises a shell (1), a burner (2), a vaporization chamber (3), a balancing chamber (4) and a liquid supply device (5); the burner (2) is connected to the vaporization chamber (3) through a steam outlet (31), and the main body of the burner (2) is arranged higher than the vaporization chamber (3) and the steam outlet (31); the burner (2) is provided with a flame ejection port (21) and an ignition device (22), and the ignition device (22) is arranged close to the flame ejection port (21); the vaporization chamber (3) is provided with a fuel addition port A (32) and a heating element (33); the balancing chamber (5) is provided with a fuel injection ... (4) a fuel adding port B (41) and a fuel output port A (42), the fuel output port A (42) being connected to the fuel adding port A (32) through a pipeline, so that the liquid level of the balancing chamber (4) changes synchronously with the liquid level of the vaporizing chamber (3); the liquid level of the balancing chamber (4) is maintained at a set working liquid level; the liquid supply device (5) is connected to the fuel adding port B (41) on the balancing chamber (4) and provides alcohol fuel to the balancing chamber (4); the burner (2), the vaporizing chamber (3) and the balancing chamber (4) are all accommodated inside the shell (1); The liquid supply device (5) comprises a liquid storage container (51) and a power device (52) for conveying alcohol fuel, and pipelines for connecting the devices; an input port of the power device (52) is communicated with the liquid storage container (51), and an output port of the power device (52) is communicated with a fuel addition port B (41) on the balance chamber (4); A liquid level detection device (43) is provided in the internal cavity of the balancing chamber (4), and the liquid level detection device (43) can detect the liquid level height inside the balancing chamber (4), and the liquid level height of the balancing chamber (4) is consistent with the liquid level height of the vaporization chamber (3); The gasified alcohol fireplace also includes an electric control device (7) capable of controlling the operation of the gasified alcohol fireplace. The electric control device (7) can control whether the heating element (33) is operating and the power level thereof and control the rate at which the power device (52) delivers alcohol fuel to the balancing chamber (4). The electric control device (7) is also connected to a liquid level detection device (43) inside the balancing chamber (4) and detects the liquid level height inside the balancing chamber (4) in real time through the liquid level detection device (43). The ignition device (22) is also connected to the electric control device (7) and can control the ignition device (22) to perform an ignition operation.

2. A gasified alcohol fireplace as claimed in claim 1, characterized in that: The shell (1) is provided with a flame outlet (11), and the flame outlet (11) faces the flame ejection outlet (21). The flame ejection outlet (21) on the burner (2) and the area above it can be observed from the outside of the shell (1).

3. A gasified alcohol fireplace as claimed in claim 1, characterized in that: The heating element (33) is arranged inside the gasification chamber (3).

4. A gasified alcohol fireplace as claimed in claim 1, characterized in that: The liquid storage container (51) is located inside the shell (1) or outside the shell (1).

5. The gasified alcohol fireplace according to claim 1, characterized in that: The heating element (33) is an element that uses electric heating to achieve heating; the heating element (33) is a metal electric heating tube or a PTC heating element or a heating resistance wire or an electromagnetic induction heating coil.

6. A gasified alcohol fireplace as claimed in claim 1, characterized in that: A solenoid valve (6) is arranged on the pipeline between the fuel addition port A (32) and the fuel output port A (42), and the solenoid valve (6) is a normally closed solenoid valve.

7. The gasified alcohol fireplace according to claim 1, characterized in that: The burner is provided with a flame detection device (23), and the flame detection device (23) is connected to the electric control device (7).

8. The gasified alcohol fireplace according to claim 2, characterized in that: A furnace cavity (12) is formed inside the shell (1), the flame outlet (11) is inside the furnace cavity (12), a furnace door (14) is arranged in front of the furnace cavity (12), and a flame observation port (13) is arranged on the furnace door (14).

9. The control method of a gasified alcohol fireplace according to claim 1, characterized in that: The invention comprises a starting ignition method, wherein the starting ignition method comprises the following steps: (1) the electronic control device (7) issues a command, and the electronic control device (7) drives the power device (52) to supply alcohol fuel to the balance chamber (4) in a stable state; (2) the electric control device (7) detects the liquid level of the internal cavity of the balancing chamber (4) in real time through the liquid level detection device (43); once the electric control device (7) detects that the liquid level in the balancing chamber (4) is higher than a set working liquid level, the electric control device (7) increases the heating power of the heating element (33); once the electric control device (7) detects that the liquid level in the balancing chamber (4) is lower than the set working liquid level, the electric control device (7) reduces the heating power of the heating element (33), so that the liquid level in the balancing chamber (4) is always at the set working liquid level; (3) Once the alcohol vapor is ejected from the flame outlet (21), the electronic control device (7) controls the ignition device (22) to ignite, and the alcohol vapor is immediately ignited, thereby causing the gasified alcohol fireplace to burn.

10. A control method for a gasified alcohol fireplace as claimed in claim 9, characterized in that: The invention comprises a stopping working method, wherein the stopping working method comprises the following steps: the electronic control device (7) issues an instruction to stop the power device (52) from delivering alcohol fuel and to stop the heating element (33) from working, thereby shutting down the gasified alcohol fireplace.

11. The control method of a gasified alcohol fireplace according to claim 9, characterized in that: A solenoid valve (6) is provided on the pipeline between the fuel addition port A (32) and the fuel output port A (42), and the solenoid valve (6) is a normally closed solenoid valve; when the electronic control device (7) issues an instruction to close the gasified alcohol fireplace, the solenoid valve (6) is simultaneously cut off, thereby preventing the alcohol fuel in the internal cavity of the balancing chamber (4) from being supplied to the gasification chamber (3).

12. The control method of a gasified alcohol fireplace according to claim 9, characterized in that: The stable state of the alcohol fuel delivered by the power device (52) to the balancing chamber (4) is an intermittent periodic function of intermittent addition, that is, the alcohol fuel is added for a period of time, which is called the addition interval, and the addition is stopped for a period of time, which is called the stop interval. The average rate of the alcohol fuel added by the power device (52) is constant; when the power device (52) is in the stop interval, once it is detected that the liquid level height inside the balancing chamber (4) is higher than the set working liquid level, the electronic control device (7) increases the heating power of the heating element (33), thereby accelerating the vaporization rate in the vaporization chamber (3); when the power device (52) is in the addition interval, once it is detected that the liquid level height inside the balancing chamber (4) is lower than the set working liquid level, the electronic control device (7) reduces the heating power of the heating element (33), thereby slowing down the vaporization rate in the vaporization chamber (3).

13. A method for controlling a gasified alcohol fireplace as claimed in claim 12, characterized in that: The power of the gasified alcohol fireplace is adjusted by adjusting the average rate at which the power device (52) delivers alcohol fuel in a steady state through the electronic control device (7).

14. The control method of a gasified alcohol fireplace according to claim 12, characterized in that: The power device (52) delivers a stable periodic function of alcohol fuel to the balance chamber (4), and its minimum period is 5 seconds to 3 minutes.

15. A control method for a gasified alcohol fireplace as claimed in claim 14, characterized in that: The internal cavity volumes of the vaporization chamber (3) and the balancing chamber (4) as well as the maximum working liquid level and the minimum working liquid level of the balancing chamber (4) are calculated and determined based on the flow rate of the minimum cycle of the periodic function, so that when the internal cavity of the balancing chamber (4) is at the lowest liquid level, the alcohol fuel added by the power device (52) in one cycle will not cause the alcohol fuel inside the balancing chamber (4) to exceed the maximum working liquid level.

16. The control method of a gasified alcohol fireplace according to claim 12, characterized in that: The power device (52) delivers a steady-state periodic function of the alcohol fuel to the balancing chamber (4), which is to continuously add the alcohol fuel at a constant rate.

17. The control method of a gasified alcohol fireplace according to claim 9, characterized in that: The burner (2) is provided with a flame detection device (23), which is connected to the electronic control device (7) and is used to detect whether the flame on the burner (2) is successfully ignited during ignition and whether the flame is abnormal during normal operation. Once the flame abnormality is detected, the power device (52) is immediately stopped from transporting alcohol fuel and the heating element (33) is stopped from working, and the gasified alcohol fireplace is closed.

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