A dual steam source vapor heating apparatus

Abstract

This utility model discloses a steam heating device with dual steam sources, belonging to the field of air conditioning equipment and heating technology. The device includes a water supply unit, a first heating source, at least one second heating source, a heat exchanger, a fan, and a controller. The first heating source heats liquid water into initial-heat steam, and the second heating source reheats it to generate reheat steam. Rapid heating is achieved through the heat exchanger and fan. The device also includes a condensate recovery pipeline, an expansion tank, a temperature sensor, and a valve control unit, supporting independent temperature control and frequency conversion adjustment for multiple rooms. This utility model has advantages such as high heating efficiency, energy saving and environmental protection, flexible control, and system stability, and is suitable for heating scenarios in homes, offices, and cold regions.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning and heating technology, specifically to a steam heating device with dual steam sources. Background Technology

[0002] Currently, common indoor heating methods mainly include commercial air conditioning systems and hydronic heating systems. Commercial air conditioning systems mostly use compressor circulation or auxiliary electric heating to achieve winter heating. Essentially, they use electricity to drive the compressor to perform thermodynamic circulation, converting electrical energy into heat energy. However, this method has problems such as low energy conversion efficiency, high power consumption, and high operating costs. Especially when a rapid increase in indoor temperature is required, its heating speed is slow and its thermal response is lagging, making it difficult to meet users' comfort requirements.

[0003] On the other hand, traditional hydronic heating systems heat water in a boiler, circulate it through pipes to each room, and release heat into the room through radiators. While hydronic heating systems provide a stable heat source to some extent, their heat transfer medium is hot water, and the upper temperature limit is limited by the boiling point of water, resulting in limited heat transfer efficiency. Furthermore, the entire piping system needs to be preheated when the system starts up; rooms farther from the heat source heat up slowly, and heat distribution is uneven, making rapid and precise temperature control impossible. Especially in cold regions or large-space buildings, traditional hydronic heating systems perform poorly in terms of energy efficiency and response speed.

[0004] Therefore, there is an urgent need for a new type of heating system that can achieve rapid, uniform, and controllable indoor heating while ensuring energy efficiency, thereby improving user experience and reducing operating costs. Utility Model Content

[0005] To solve the above problems, this utility model provides a steam heating device with dual steam sources, comprising:

[0006] (1) Water supply unit, including water outlet;

[0007] (2) A first heating source, including a first heating source inlet and a first heating source outlet, wherein the first heating source inlet is connected to the water outlet along a first pipeline and is used to heat liquid water to generate initial heat steam;

[0008] (3) At least one second heating source, including a second heating source inlet and a second heating source outlet, the second heating source inlet being connected to the first heating source outlet along the first pipeline, for reheating the initial heat steam from the first heating source to generate reheat steam;

[0009] (4) At least one heat exchanger, including a heat exchanger inlet and a heat exchanger outlet, wherein the heat exchanger inlet is connected to the outlet of the second heating source;

[0010] (5) At least one fan is provided in relation to a corresponding heat exchanger. The fan drives the airflow to flow through the fin surface of the heat exchanger and exchange heat with the indoor air through the air outlet on the front of the heat exchanger.

[0011] (6) A controller is connected to the first heating source, the second heating source, the heat exchanger and the fan respectively, and is used to adjust the steam temperature and the air volume.

[0012] Furthermore, the dual-stage heating steam heating system also includes a second pipeline, and the water supply unit also includes a return water inlet. The second pipeline connects the condensate outlet of each heat exchanger to the return water inlet of the water supply unit to return the condensate to the water supply unit.

[0013] Furthermore, the dual-stage heating steam heating system also includes at least one pipe valve, which is located before the inlet of the second heating source or between the outlet of the second heating source and the inlet of the heat exchanger, for controlling whether steam flows to the corresponding heat exchanger.

[0014] Furthermore, when the pipeline valve is located before the inlet of the second heating source, the multiple second heating sources are connected in parallel on the first pipeline, and the multiple second heating sources can be controlled separately and operate in parallel.

[0015] Furthermore, when the pipeline valve is located between the outlet of the second heating source and the inlet of the heat exchanger, the multiple second heating sources are connected in series on the first pipeline. This series connection of multiple second heating sources allows for coordinated operation, jointly reheating the water vapor in the first pipeline and increasing the temperature of the water vapor in the second pipeline for rapid room use.

[0016] Furthermore, the pipeline valve is a manually operated shut-off valve.

[0017] Furthermore, the pipeline valve includes an electric ball valve, which is signal-connected to the controller. The opening degree of the electric ball valve is controlled by the controller to independently regulate the steam flow of each heat exchanger.

[0018] Furthermore, the manual shut-off valve is connected in parallel with the electric ball valve. When the electric ball valve malfunctions or loses power, the steam passage is maintained by opening the manual shut-off valve.

[0019] Furthermore, it also includes an ambient temperature sensor for monitoring indoor ambient temperature.

[0020] Furthermore, the controller is connected to the ambient temperature sensor for adjusting the steam temperature and / or airflow.

[0021] Furthermore, at least one of the first heating source, the second heating source, and the fan is frequency converter controlled.

[0022] Furthermore, it includes an expansion tank, which is connected to a first pipeline on the outlet side of the first heating source for absorbing steam pressure fluctuations.

[0023] Through the above technical solution, the two-stage heating steam heating system provided by this utility model has the following beneficial effects:

[0024] High heating efficiency: It adopts a two-stage heating structure. The first heating source converts water into initial hot steam, and the second heating source reheats it, which significantly increases the steam temperature, accelerates the heat exchange rate, and achieves rapid indoor heating.

[0025] Energy-saving and environmentally friendly: Water resources are recycled through a condensate recovery system, reducing energy waste; frequency conversion control is supported, which dynamically adjusts the power according to actual needs to avoid energy waste.

[0026] Flexible control: The controller can be linked with ambient temperature sensors, heating sources, fans, etc., to achieve independent temperature control of multiple rooms and meet the differentiated heating needs of different areas.

[0027] The system is stable and reliable: it is equipped with an expansion tank to absorb pressure fluctuations and prevent the system pressure from becoming too high; the electric valve and the manual valve are designed in parallel to ensure that the system can still operate in the event of a failure.

[0028] Highly applicable: It can be used in ordinary households and office buildings, as well as in cold regions or large-space buildings, and has strong practicality and promotional value. Attached Figure Description

[0029] Figure 1 A pipeline schematic diagram of a first embodiment of a steam heating device with dual steam sources;

[0030] Figure 2 This is a schematic diagram of the control wiring principle for a steam heating device system with dual steam sources.

[0031] Figure 3 A pipeline schematic diagram of a second embodiment of a steam heating device with dual steam sources;

[0032] In the diagram: 1-Water supply unit; 2-First heating source; 3-First pipeline; 4-Pipeline valve; 5-Second heating source; 6-Fan; 7-Heat exchanger; 8-Second pipeline; 9-Expansion tank; 10-Controller; 11-Temperature sensor. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] Figure 1 and 2 As shown, a steam heating device with dual steam sources includes a water supply unit 1, which includes a water outlet 101; it also includes a first heating source 2, which includes a first heating source inlet 201 and a first heating source outlet 202. The first heating source inlet 201 is connected to the water outlet 101 along a first pipeline 3. The first heating source 2 is used to heat liquid water to generate initial heat steam.

[0036] The device also includes at least one second heating source 5, including a second heating source inlet 501 and a second heating source outlet 502. The second heating source inlet 501 is connected to the first heating source outlet 202 along the first pipeline 3, and is used to reheat the initial hot steam from the first heating source 2 to generate reheated steam.

[0037] In one optional technical solution, the first heating source 2 can be a gas-fired boiler (rated thermal power 10-30kW) to heat the liquid water provided by the water supply unit 1 to the initial hot steam at 100-150℃; the second heating source 5 can be an electric heater (power 5-15kW) to heat the initial hot steam to the reheat steam at 150-250℃, which significantly improves the heat exchange efficiency.

[0038] The device also includes at least one heat exchanger 7, including a heat exchanger inlet 701 and a heat exchanger outlet 702, wherein the heat exchanger inlet 701 is connected to the outlet 502 of the second heating source; and at least one fan 6, which is correspondingly arranged with the heat exchanger 7, wherein the fan 6 drives the airflow to flow through the surface of the heat exchanger fins and exchange heat with the indoor air through the air outlet on the front of the heat exchanger 7.

[0039] The system also includes a controller 10 and at least one pipeline valve 4, located before the inlet 501 of the second heating source, for controlling whether steam flows to the corresponding heat exchanger. The pipeline valve 5 includes either an electric ball valve or a manual shut-off valve, and is signal-connected to the controller 10. The opening degree of the electric ball valve is controlled by the controller 10 to independently regulate the steam flow rate of the heat exchanger 7. In an optional embodiment, the manual shut-off valve is connected in parallel with the electric ball valve; when the electric ball valve malfunctions or loses power, the steam passage is maintained by opening the manual shut-off valve.

[0040] Furthermore, the device also includes an ambient temperature sensor 11 for monitoring indoor ambient temperature.

[0041] In one optional implementation, the controller 10 receives a signal from the ambient temperature sensor 11 (accuracy ±0.5℃). When the indoor temperature is lower than the set value, it automatically increases the power of the second heating source 5 and the speed of the fan 6 corresponding to the heat exchanger 7. When the temperature reaches the set value, it switches to variable frequency low-power operation to achieve energy saving.

[0042] according to Figure 1 As shown, this embodiment illustrates multiple rooms, each equipped with an independent pipe valve 4, a second heating source 5, a fan 6, and a heat exchanger 7. The corresponding pipe valve 4, second heating source 5, fan 6, and heat exchanger 7 in each room form an independent room-end heating unit. The beneficial effect of this embodiment is that, because liquid water is heated by the first heating source 2 and converted into steam (i.e., initial heated steam), it continues to be transmitted to each room along the first pipe 3. At the entrance of each room corresponding to the first pipe 3, an independent heating unit (including a second heating source 5) is set up. The second heating source 5 can reheat the initial heated steam from the first heating source 2 to the room entrance, forming reheated steam. The reheated steam enters the heat exchanger 7, and under the action of the fan 6, transfers heat into the room, rapidly increasing the indoor temperature, thereby shortening the room heating time and improving the user experience. The multiple second heating sources 5 are connected in parallel on the first pipe 3, and each second heating source 5 can be controlled separately and operate in parallel.

[0043] Furthermore, the device also includes a second pipeline 8, and the water supply unit also includes a return water port 102. The second pipeline 8 connects the condensate formed by heat exchange in the heat exchanger 7 to the return water port 102 of the water supply unit through the heat exchanger outlet 702, so as to send the condensate back to the water supply unit 1, forming a closed loop of water, water vapor and water flow.

[0044] Furthermore, at least one of the first heating source 2, the second heating source 5, and the fan 6 in this device is frequency converter controlled. The frequency converter is used to adjust the motor frequency and control the fan speed or heating power through the controller.

[0045] The controller 10 is connected to at least one of the ambient temperature sensor 11, the first heating source 2, the second heating source 5, the fan 6, and the heat exchanger 7, and is used to adjust the steam temperature and / or the air volume.

[0046] Furthermore, the device also includes an expansion tank 9, which is connected to the first pipeline 3 on the side of the first heating source outlet 202, for absorbing steam pressure fluctuations.

[0047] The water supply unit of this device has an inlet that connects to an external water source to provide water to the unit as needed.

[0048] like Figure 3 As shown, a second embodiment based on the first embodiment is illustrated. The main difference between the second and first embodiments is that the pipe valve 4 is positioned between the second heating source outlet 502 and the heat exchanger inlet 701, and the multiple second heating sources are connected in series on the first pipe 3. The advantage of the second embodiment is that, for cold regions, such as northern regions, where multiple rooms have multiple heating needs, the series connection of the second heating sources allows for control of their operating states to meet the different heating efficiency requirements of different rooms. For example, if the room furthest from the first heating source needs rapid heating, the controller 10 can control multiple second heating sources 5 to work in tandem, increasing the temperature of the steam inside the first pipe 3. By controlling the opening and closing of multiple pipe valves, only the pipe valve corresponding to the room requiring rapid heating can be opened, allowing reheated steam after multiple reheating cycles to enter the room and raise its temperature.

[0049] The various embodiments listed in this utility model, along with the corresponding illustrations and scheme descriptions, involve the representation of a room. The second heating source or pipe valve can be placed inside or outside the room, all of which are within the inventive scope of this utility model.

[0050] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above-mentioned terms can be understood according to the specific circumstances.

[0051] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may be an intermediate component; when a component is referred to as being "fixed" to another component, it can be directly fixed to the other component or there may be an intermediate component, which can be done by effective means such as bonding, welding, riveting, bolting, etc., which will not be listed in this application; when a component is referred to as being "movable" to another component, it can be done by rotation or sliding.

[0052] This application is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A steam heating device with dual steam sources, characterized in that, include: (1) Water supply unit, including water outlet; (2) A first heating source, including a first heating source inlet and a first heating source outlet, wherein the first heating source inlet is connected to the water outlet along a first pipeline and is used to heat liquid water to generate initial heat steam; (3) At least one second heating source, including a second heating source inlet and a second heating source outlet, the second heating source inlet being connected to the first heating source outlet along the first pipeline, for reheating the initial heat steam from the first heating source to generate reheat steam; (4) At least one heat exchanger, including a heat exchanger inlet and a heat exchanger outlet, wherein the heat exchanger inlet is connected to the outlet of the second heating source; (5) At least one fan is provided in relation to a corresponding heat exchanger. The fan drives the airflow to flow through the fin surface of the heat exchanger and exchange heat with the indoor air through the air outlet on the front of the heat exchanger. (6) A controller is connected to the first heating source, the second heating source, the heat exchanger and the fan respectively, and is used to adjust the steam temperature and the air volume.

2. The steam heating device with dual steam sources according to claim 1, characterized in that: The water supply unit includes a second pipeline and a return water inlet. The second pipeline connects the condensate outlet of each heat exchanger to the return water inlet of the water supply unit to return the condensate to the water supply unit.

3. A steam heating device with dual steam sources according to claim 1, characterized in that: This includes ambient temperature sensors used to monitor indoor ambient temperature.

4. A steam heating device with dual steam sources according to claim 3, characterized in that: The controller is connected to the ambient temperature sensor and is used to adjust the steam temperature and / or air volume.

5. A steam heating device with dual steam sources according to claim 1, characterized in that: It includes at least one pipe valve, which is located before the inlet of the second heating source or between the outlet of the second heating source and the inlet of the heat exchanger, for controlling whether water vapor flows to the corresponding heat exchanger.

6. A steam heating device with dual steam sources according to claim 5, characterized in that: The pipeline valve is a manually operated shut-off valve.

7. A steam heating device with dual steam sources according to claim 5, characterized in that: The pipeline valves include electric ball valves, which are signal-connected to the controller. The opening degree of the electric ball valves is controlled by the controller to independently regulate the steam flow of each heat exchanger.

8. A steam heating device with dual steam sources according to claim 7, characterized in that: The pipeline valve also includes a manual shut-off valve, which is connected in parallel with the electric ball valve. When the electric ball valve malfunctions or loses power, the steam passage is maintained by opening the manual shut-off valve.

9. A steam heating device with dual steam sources according to claim 1, characterized in that: At least one of the first heating source, the second heating source, and the fan is frequency converter controlled.

10. A steam heating device with dual steam sources according to claim 1, characterized in that: It includes an expansion tank, which is connected to a first pipeline on the outlet side of a first heating source and is used to absorb steam pressure fluctuations.

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