Non-pressure heating structure capable of stably outputting liquid with high boiling point

Abstract

The invention discloses a non-pressure heating structure capable of stably outputting boiling-point high-temperature liquid. The non-pressure heating structure comprises a heating cavity, a heating body is arranged in the heating cavity, a liquid inlet is formed in the position, close to the bottom, of the heating cavity, an overflow upper edge opening is formed in one side of the upper end of the heating cavity, a separation buffer cavity is formed in the outer side of the overflow upper edge opening, and a liquid outlet is formed in the lower portion of the separation buffer cavity. The invention has the advantages that: 1, the liquid outlet temperature of the structure is determined by the physical boiling point of liquid, the liquid is not boiled and vaporized, and gas-liquid mixed fluid cannot climb over the upper edge opening of the heating cavity, so that the liquid is not discharged, and the liquid outlet temperature is the boiling point temperature and is constant; 2, when the heating energy is stably input, the output flow of the high-temperature liquid is stable and sustainable; 3, according to the output of the high-temperature liquid in the structure, under the condition that the low-temperature liquid inlet supply condition is constant, the flow of the high-temperature liquid is controllable by controlling the input level of heating energy, and when heating is stopped, the output of the high-temperature liquid is also stopped; and 4, the whole structure is communicated with the atmosphere, so that no-pressure safety is always realized during operation.

Description

Technical Field

[0001] This invention mainly relates to the technical field of rapid water heater liquid supply system, and more specifically to a pressureless heating structure that can stably output high-temperature boiling liquid. Background Technology

[0002] Existing high-temperature liquid heating structures mostly employ an indirect temperature control mode of "temperature sensor + heating power adjustment," relying on the sensor to detect the liquid temperature and then adjust the heating intensity accordingly. This method has significant lag and is easily affected by changes in liquid flow rate and the thermal inertia of the heating element, resulting in large fluctuations in the output liquid temperature.

[0003] Existing technologies suffer from insufficient flow stability. Traditional structures often rely on the rated power of the inlet pump or passive control of the chamber pressure difference, lacking linkage with the heating process. Even when the heating energy input is stable, uneven liquid vaporization and pressure fluctuations within the chamber can cause the output flow to fluctuate, making it impossible to achieve continuous and stable quantitative output. Most technologies require additional auxiliary devices such as flow valves and variable frequency inlet pumps to adjust the flow, which not only increases structural complexity but also introduces a "regulation lag" problem. Furthermore, a direct linear relationship between heating power and flow rate cannot be achieved, making precise on-demand flow control difficult. After heating stops, residual pressure or heat within the chamber can easily lead to "continuous outflow of residual liquid." Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a pressureless heating structure that can stably output high-temperature boiling liquids, overcoming the shortcomings and deficiencies of the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pressureless heating structure capable of stably outputting high-temperature boiling liquid, characterized in that it includes a heating chamber, a heating element is provided inside the heating chamber, a liquid inlet is provided near the bottom of the heating chamber, an overflow upper edge is formed on one side of the upper end of the heating chamber, a separation buffer chamber is formed outside the overflow upper edge, a liquid outlet is formed at the lower part of the separation buffer chamber, an initial liquid level line and a boiling liquid level line are formed at the upper part of the heating chamber, the boiling liquid level line is located above the initial liquid level line, the initial liquid level line is located below the overflow upper edge, and the boiling liquid level line is located above the overflow upper edge. Both the heating chamber and the separation buffer chamber are connected to the outside atmosphere.

[0006] The advantages of this invention are as follows: 1. The outlet temperature of this structure is determined by the physical boiling point of the liquid. If the liquid does not boil and vaporize, the gas-liquid mixture cannot overflow the upper edge of the heating chamber, and therefore no liquid will be discharged. Thus, the outlet temperature is the boiling point temperature, which is constant. 2. When the heating energy is stably input, the output flow rate of the high-temperature liquid is stable and sustainable. 3. Under constant low-temperature liquid supply conditions, the output flow rate of the high-temperature liquid in this structure is controllable by controlling the input of heating energy. When heating stops, the output of the high-temperature liquid also stops. 4. Since the entire structure is open to the atmosphere, it is always pressureless and safe during operation. Attached Figure Description

[0007] Figure 1 This is the main view of the structure of the present invention. Detailed Implementation

[0008] The technical solution of a pressureless heating structure capable of stably outputting high-temperature boiling liquids provided by the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0009] See attached document Figure 1 This invention provides a pressureless heating structure capable of stably outputting high-temperature boiling liquids. It differs from existing technologies in that it includes a heating chamber 1, within which a heating element 2 is provided. A liquid inlet 3 is located near the bottom of the heating chamber 1. An overflow upper edge 4 is formed on one side of the upper end of the heating chamber 1. A separation buffer chamber 5 is formed outside the overflow upper edge 4. A liquid outlet 6 is formed at the lower part of the separation buffer chamber 5. An initial liquid level line 7 and a boiling liquid level line 8 are formed at the upper part of the heating chamber 1. The boiling liquid level line 8 is located above the initial liquid level line 7, and the initial liquid level line 7 is located below the overflow upper edge 4. The boiling liquid level line 8 is located above the overflow upper edge 4. The upper parts of both the heating chamber 1 and the separation buffer chamber 5 are connected to the outside atmosphere.

[0010] like Figure 1 As shown, the height between the liquid inlet 3 and the initial liquid level line 7 is h, and the height between the initial liquid level line 7 and the boiling liquid level line 8 is δh.

[0011] In practice, the first step involves continuously supplying low-temperature liquid through the inlet at the bottom of the heating chamber, maintaining a constant pressure at a liquid level height of h. After entering the heating chamber, the liquid automatically reaches the initial liquid level height h and remains stable. The second step involves the heating element continuously heating the liquid. As the liquid is heated, its specific gravity decreases, and it flows upward under the influence of buoyancy. During this process, the liquid continues to be heated to higher temperatures by the heating element, eventually reaching its boiling point and vaporizing. At this point, the high-temperature fluid is in a vapor-liquid mixed state, its volume expands rapidly, and its specific gravity drops sharply. With a constant inlet pressure, the liquid level at the top will rise to δh, forming a surge until it overflows. The fluid then overflows the upper edge of the heating chamber and enters the separation buffer chamber. At this point, as the liquid continues to flow out from the top, the pressure at the bottom of the heating chamber decreases, and the low-temperature liquid continues to be added to the inlet. The heating element continues to heat the liquid, and this cycle continues until a stable liquid output state is reached. In the third step, when the high-temperature liquid in the vapor-liquid mixture crosses over to the separation buffer chamber, the heating source disappears, vaporization stops, and under the action of gravity, the gas is discharged upward and the high-temperature liquid sinks, achieving vapor-liquid separation and flowing out stably from the liquid outlet at the bottom of the chamber.

[0012] It should be noted that the present invention, as fully described, can have various modifications and variations, and is not limited to the specific embodiments described above. The above embodiments are merely illustrative of the invention and not intended to limit it. In short, the scope of protection of the present invention should include those modifications, substitutions, and alterations that are obvious to those skilled in the art.

Claims

1. A pressureless heating structure capable of stably outputting high-temperature boiling liquids, characterized in that, The heating chamber (1) includes a heating element (2) inside the heating chamber (1). The heating chamber (1) has a liquid inlet (3) near the bottom. An overflow upper edge port (4) is formed on one side of the upper end of the heating chamber (1). A separation buffer chamber (5) is formed outside the overflow upper edge port (4). A liquid outlet (6) is formed at the lower part of the separation buffer chamber (5). An initial liquid level line (7) and a boiling liquid level line (8) are formed at the upper part of the heating chamber (1). The boiling liquid level line (8) is located above the initial liquid level line (7). The initial liquid level line (7) is located below the overflow upper edge port (4). The boiling liquid level line (8) is located above the overflow upper edge port (4). The heating chamber (1) and the separation buffer chamber (5) are both connected to the outside atmosphere.

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