Water heater

Abstract

The utility model provides a kind of water heater, it is related to water heater technical field.The water heater includes combustor, main heat exchanger, condensing heat exchanger, evaporation assembly and fan, multiple first heat exchange pieces for heat exchange with high-temperature flue gas are equipped in main heat exchanger, condensing heat exchanger is equipped with multiple second heat exchange pieces for heat exchange with high-temperature flue gas and condensate water passage, evaporation cavity, catchment, liquid level detection device and controller are equipped in evaporation assembly, evaporation assembly and combustor, main heat exchanger thermal contact cooperation, condensate water passage is communicated evaporation cavity, catchment is communicated evaporation cavity and is used to collect unvaporized condensate water, liquid level detection device is used to detect the liquid level height in catchment, fan is communicated evaporation cavity, fan is used to extract the condensate water vaporized in evaporation cavity, the rotational speed of fan can be adjusted according to the liquid level height detected by liquid level detection device.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a water heater. Background Technology

[0002] Current water heaters generate heat through a burner and exchange it through a heat exchanger. During operation, the surface temperature of the burner and heat exchanger rises. Cooling can be achieved through either coil cooling or air cooling. However, using coil cooling increases costs and can cause condensation on the heat exchanger surface under certain conditions. Air cooling, on the other hand, is less effective and can also affect the use of combustion air.

[0003] Condensing water heaters gradually produce condensate during operation. This condensate is corrosive, and direct discharge can corrode sewer pipes. It is typically neutralized using a neutralizing agent box before discharge. The neutralizing agent in the box needs to be replaced regularly, increasing the operating cost of the water heater. Additionally, the neutralizing agent box increases the size of the water heater, making it impossible to integrate it into a cabinet. Draining the condensate requires adding a drain pipe to the bottom of the water heater, which users need to pre-install during renovation, or leave the drain pipe exposed, affecting aesthetics. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of poor surface cooling effect and inconvenient condensate drainage of the heat exchanger and burner of the existing water heater, and to provide a water heater.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a water heater, the water heater comprising:

[0007] A burner, wherein the burner is provided with a flue gas passage for supplying high-temperature flue gas flow;

[0008] The main heat exchanger is provided with a plurality of first heat exchange elements for exchanging heat with the high-temperature flue gas.

[0009] A condensing heat exchanger is provided, wherein the burner, the main heat exchanger and the condensing heat exchanger are arranged sequentially along the flow direction of the high-temperature flue gas, and the condensing heat exchanger is provided with multiple second heat exchange elements for exchanging heat with the high-temperature flue gas and condensate channels.

[0010] An evaporation assembly is provided with an evaporation chamber, a water collection section, a liquid level detection device, and a controller. The evaporation assembly is in thermal contact with the burner and the main heat exchanger. The condensate channel is connected to the evaporation chamber. The water collection section is connected to the evaporation chamber and is used to collect unvaporized condensate. The liquid level detection device is used to detect the liquid level in the water collection section.

[0011] A fan is connected to the evaporation chamber and is used to remove vaporized condensate from the evaporation chamber. The controller can adjust the speed of the fan according to the liquid level detected by the liquid level detection device.

[0012] In this design, the burner, main heat exchanger, and condensing heat exchanger are arranged sequentially along the flow direction of the high-temperature flue gas. The high-temperature flue gas first flows through the main heat exchanger after passing through the flue gas passage of the burner, where it undergoes primary heat exchange. Then, it flows through the condensing heat exchanger for auxiliary heat exchange, where condensate is condensed. The condensate flows into the evaporation chamber through the condensate passage. In the evaporation chamber, the condensate absorbs the heat generated by the burner and the main heat exchanger and then vaporizes. The vaporized water vapor is extracted by a fan and discharged outdoors along with the high-temperature flue gas. The vaporization of the condensate is used to cool the surfaces of the burner and the main heat exchanger, making cooling more convenient. The liquid level detection device can detect the liquid level in the water collection section. The controller can adjust the fan speed according to the liquid level detected by the liquid level detection device. When the liquid level detection device detects that the liquid level has reached the preset height, the controller can increase the fan speed and reduce the combustion thermal efficiency, so that the condensate can evaporate more quickly. Therefore, there is no need to set up a neutralization box, which reduces the size of the water heater. There is no need to reserve a condensate drain pipe or exposed drain pipe, which reduces costs and improves aesthetics.

[0013] Preferably, the liquid level detection device includes a float and a sensor. The float is disposed inside the water collection section, and the sensor is disposed on the side wall of the water collection section. The sensor is used to detect the height of the float and output the detection signal to the controller.

[0014] In this solution, the liquid level detection device uses a float and a sensor. The float can change its height as the water level changes, the sensor detects the height of the float and transmits the detection signal to the controller. The controller adjusts the speed of the blower according to the liquid level. The combination of the float and the sensor has a simple structure, is easy to install and maintain, and reduces production costs.

[0015] Preferably, the burner, the main heat exchanger, the condensing heat exchanger, and the fan are arranged in sequence along the vertical direction.

[0016] In this design, the burner, main heat exchanger, condensing heat exchanger, and fan are arranged vertically in sequence, which better matches the vertical flow path of the high-temperature flue gas. This makes it easier for the high-temperature flue gas to flow through the main heat exchanger and condensing heat exchanger for heat exchange, and also makes it easier for the fan to draw the high-temperature flue gas from above.

[0017] Preferably, the evaporation assembly is located on the side of the burner and the main heat exchanger, the evaporation chamber extends vertically, and the water collection part is located at the lower end of the evaporation chamber.

[0018] In this scheme, by placing the evaporation component on the side of the burner and the main heat exchanger, the evaporation component can have a larger heat exchange surface with the burner and the main heat exchanger, which is more conducive to the heat conduction of the burner and the main heat exchanger to the evaporation chamber, thereby causing the condensate to evaporate, and at the same time, it can better cool the burner and the main heat exchanger.

[0019] Preferably, the water heater further includes a flow guide, which is disposed between the condensing heat exchanger and the evaporation chamber, and the flow guide can guide the condensate in the condensing heat exchanger to the evaporation chamber.

[0020] In this design, the flow guide located between the condensing heat exchanger and the evaporation chamber has a flow guiding function, which can guide the flow direction of the condensate and guide the condensate into the evaporation chamber, preventing the condensate from flowing into other components.

[0021] Preferably, the flow guide includes a first part and a second part, the first part extending obliquely toward the evaporation chamber, and the second part extending in a direction perpendicular to the flow direction of the high-temperature flue gas.

[0022] In this design, by extending the first section at an angle towards the evaporation chamber, the condensate can be better guided towards the evaporation chamber, making it easier for the condensate to flow into the evaporation chamber. Furthermore, by setting the extension direction of the second section perpendicular to the flow direction of the high-temperature flue gas, the high-temperature flue gas can flow more fully through the second section and heat it to vaporize the condensate, further improving the vaporization effect of the condensate.

[0023] Preferably, the condensate channel includes a main channel and branch channels, a plurality of branch channels are connected to the second heat exchanger, the condensate in the plurality of branch channels is collected in the main channel, and the output end of the main channel is arranged toward the guide member.

[0024] In this design, high-temperature flue gas exchanges heat with the second heat exchanger to form condensate. The condensate first flows into the branch channels, and the condensate from multiple branch channels converges into the main channel. It then flows from the output end of the main channel to the guide vane, and is guided into the evaporation chamber. By setting multiple branch channels, condensate can be collected more efficiently.

[0025] Preferably, the evaporation assembly includes a first evaporation section and a second evaporation section. The first evaporation section is attached to the burner and has a first evaporation chamber. The second evaporation section is attached to the main heat exchanger and has a second evaporation chamber. The first evaporation chamber and the second evaporation chamber are connected and together form the evaporation chamber.

[0026] In this design, the first evaporation section is attached to the burner, allowing the condensate in the first evaporation chamber to fully exchange heat with the burner. Similarly, the second evaporation section is attached to the main heat exchanger, allowing the condensate in the second evaporation chamber to fully exchange heat with the main heat exchanger. This improves the evaporation effect of the condensate and also reduces the temperature of the burner and the main heat exchanger more effectively.

[0027] Preferably, the evaporation chamber includes an inlet whose width gradually increases in the direction away from and towards the condensing heat exchanger.

[0028] In this design, the inlet width is gradually increased along the direction away from the condenser heat exchanger and towards the condenser heat exchanger, which makes it more conducive to the flow of condensate into the evaporation chamber.

[0029] Preferably, the second heat exchanger includes a plurality of heat exchange fins and a plurality of heat exchange tubes, wherein the plurality of heat exchange fins are disposed on the heat exchange tubes, and the plurality of heat exchange tubes are staggered in the flow direction facing the high-temperature flue gas.

[0030] In this scheme, by setting multiple heat exchange fins on the heat exchange tubes and arranging the multiple heat exchange tubes in an alternating manner in the direction of flow towards the high-temperature flue gas, the high-temperature flue gas can come into more full contact with the multiple heat exchange tubes, thereby improving the heat exchange effect of the condensing heat exchanger.

[0031] The positive and progressive effects of this utility model are as follows:

[0032] The burner, main heat exchanger, and condensing heat exchanger are arranged sequentially along the flow direction of the high-temperature flue gas. The high-temperature flue gas first flows through the main heat exchanger after passing through the flue gas passage of the burner, where it undergoes primary heat exchange. Then, it flows through the condensing heat exchanger for auxiliary heat exchange, where condensate is produced. The condensate flows into the evaporation chamber through the condensate passage. In the evaporation chamber, the condensate absorbs the heat generated by the burner and the main heat exchanger and then vaporizes. The vaporized water vapor is extracted by a fan and discharged outdoors along with the high-temperature flue gas. The vaporization of the condensate is used to cool the surfaces of the burner and the main heat exchanger, making cooling more convenient. The liquid level detection device can detect the liquid level in the water collection section. The controller can adjust the fan speed according to the liquid level detected by the liquid level detection device. When the liquid level detection device detects that the liquid level has reached the preset height, the controller can increase the fan speed and reduce the combustion thermal efficiency, so that the condensate can evaporate more quickly. Therefore, there is no need to set up a neutralization box, which reduces the size of the water heater. There is no need to reserve a condensate drain pipe or exposed drain pipe, which reduces costs and improves aesthetics. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a water heater according to an embodiment of the present invention.

[0034] Figure 2 This is a partial structural schematic diagram of an evaporation assembly according to an embodiment of the present invention.

[0035] Figure 3 This is a schematic diagram of the main heat exchanger and condensing heat exchanger according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] Burner 100

[0038] Flue gas passage 110

[0039] Main heat exchanger 200

[0040] First heat exchanger 210

[0041] 300 Condensing heat exchanger

[0042] Second heat exchanger 310

[0043] Heat exchange fin 311

[0044] Heat exchanger tube 312

[0045] Condensate channel 320

[0046] Mainstream Road 321

[0047] Diversion channel 322

[0048] Evaporation Unit 400

[0049] Evaporation chamber 410

[0050] First evaporation chamber 411

[0051] Second evaporation chamber 412

[0052] Entrance 413

[0053] Water collection department 420

[0054] Liquid level detection device 430

[0055] Float 431

[0056] Sensor 432

[0057] First Evaporation Section 441

[0058] Second evaporation section 442

[0059] Fan 500

[0060] 600 flow guide

[0061] Part 1, 610

[0062] Part Two 620

[0063] High-temperature flue gas flow direction x

[0064] Condensate flow direction y Detailed Implementation

[0065] The present invention will be further described below by way of embodiments, but the present invention is not limited to the scope of the following embodiments.

[0066] like Figures 1-3As shown, this embodiment provides a water heater, which includes a burner 100, a main heat exchanger 200, a condensing heat exchanger 300, an evaporation assembly 400, and a fan 500. The burner 100 has a flue gas passage 110 for supplying high-temperature flue gas; the main heat exchanger 200 has multiple first heat exchange elements 210 for exchanging heat with the high-temperature flue gas. The burner 100, the main heat exchanger 200, and the condensing heat exchanger 300 are arranged sequentially along the flow direction of the high-temperature flue gas. The condensing heat exchanger 300 has multiple second heat exchange elements 310 for exchanging heat with the high-temperature flue gas and a condensate passage 320. The evaporation assembly 400 includes an evaporation chamber 410, a water collection section 420, a liquid level detection device 430, and a controller. The evaporation assembly 400 is in thermal contact with the burner 100 and the main heat exchanger 200. The condensate channel 320 connects to the evaporation chamber 410, and the water collection section 420 connects to the evaporation chamber 410 and is used to collect unvaporized condensate. The liquid level detection device 430 is used to detect the liquid level in the water collection section 420. A fan 500 connects to the evaporation chamber 410 and is used to remove the vaporized condensate from the evaporation chamber 410. The controller can adjust the speed of the fan 500 according to the liquid level detected by the liquid level detection device 430.

[0067] like Figures 1-3 The diagram shows the flow direction x of the high-temperature flue gas and the flow direction y of the condensate. The burner 100, main heat exchanger 200, and condensing heat exchanger 300 are arranged sequentially along the high-temperature flue gas flow direction x. The high-temperature flue gas flows through the flue gas passage 110 of the burner 100 and first passes through the main heat exchanger 200, where it undergoes primary heat exchange. It then flows through the condensing heat exchanger 300 for auxiliary heat exchange, where condensate is condensed. The condensate flows from the condensate passage 320 into the evaporation chamber 410. In the evaporation chamber 410, the condensate absorbs heat generated by the burner 100 and the main heat exchanger 200 and vaporizes. The vaporized water vapor is extracted by the fan 500 and discharged outdoors along with the high-temperature flue gas. The vaporization of the condensate effectively cools the surfaces of the burner 100 and the main heat exchanger 200, making cooling more convenient. The liquid level detection device 430 can detect the liquid level in the water collection section 420. The controller can adjust the speed of the fan 500 according to the liquid level detected by the liquid level detection device 430. When the liquid level detection device 430 detects that the liquid level has reached the preset height, the controller can increase the speed of the fan 500, reduce the combustion thermal efficiency, and make the condensate evaporate more quickly. Therefore, there is no need to set up a neutralization box, which reduces the size of the water heater. There is no need to reserve a condensate drain pipe or exposed drain pipe, which reduces costs and improves aesthetics.

[0068] The liquid level detection device 430 includes a float 431 and a sensor 432. The float 431 is disposed within the water collection section 420, and the sensor 432 is disposed on the side wall of the water collection section 420. The sensor 432 is used to detect the height of the float 431 and outputs the detection signal to the controller. The liquid level detection device 430 uses a float 431 and a sensor 432. The float 431 can change its height according to changes in water level. The sensor 432 detects the height of the float 431 and transmits the detection signal to the controller. The controller adjusts the rotation speed of the blower 500 according to the liquid level height. The combination of the float 431 and the sensor 432 has a simple structure, is easy to install and maintain, and reduces production costs. In other embodiments, the liquid level detection device 430 may also be selected from other devices deemed suitable by those skilled in the art.

[0069] The burner 100, main heat exchanger 200, condensing heat exchanger 300, and fan 500 are arranged vertically in sequence. By arranging the burner 100, main heat exchanger 200, condensing heat exchanger 300, and fan 500 vertically in sequence, the vertical flow path of the high-temperature flue gas is better matched, making it easier for the high-temperature flue gas to flow through the main heat exchanger 200 and condensing heat exchanger 300 for heat exchange, and also making it easier for the fan 500 to draw in the high-temperature flue gas from above.

[0070] An evaporation assembly 400 is disposed on the side of the burner 100 and the main heat exchanger 200, an evaporation chamber 410 extends vertically, and a water collection part 420 is disposed at the lower end of the evaporation chamber 410. By disposing the evaporation assembly 400 on the side of the burner 100 and the main heat exchanger 200, the evaporation assembly 400 and the burner 100 and the main heat exchanger 200 can have a larger heat exchange surface, which is more conducive to the heat conduction of the burner 100 and the main heat exchanger 200 to the evaporation chamber 410, thereby causing the condensate to evaporate, and at the same time, it can better cool the burner 100 and the main heat exchanger 200.

[0071] The water heater also includes a flow guide 600, which is disposed between the condensing heat exchanger 300 and the evaporation chamber 410. The flow guide 600 can guide the condensate in the condensing heat exchanger 300 to the evaporation chamber 410. The flow guide 600, located between the condensing heat exchanger 300 and the evaporation chamber 410, has a flow guiding function, guiding the flow direction of the condensate and directing it into the evaporation chamber 410, preventing the condensate from flowing into other components.

[0072] The guide member 600 includes a first part 610 and a second part 620. The first part 610 extends obliquely toward the evaporation chamber 410, and the extension direction of the second part 620 is perpendicular to the flow direction x of the high-temperature flue gas. By extending the first part 610 obliquely toward the evaporation chamber 410, the condensate can be better guided toward the evaporation chamber 410, making it easier for the condensate to flow into the evaporation chamber 410. By setting the extension direction of the second part 620 to be perpendicular to the flow direction x of the high-temperature flue gas, the high-temperature flue gas can flow more fully through the second part 620 and heat the second part 620 to vaporize the condensate, further improving the vaporization effect of the condensate.

[0073] The condensate channel 320 includes a main channel 321 and branch channels 322. Multiple branch channels 322 are connected to the second heat exchanger 310. Condensate from the multiple branch channels 322 collects in the main channel 321, and the output end of the main channel 321 faces the guide member 600. High-temperature flue gas exchanges heat with the second heat exchanger 310 to form condensate. The condensate first flows into the branch channels 322, and the condensate from the multiple branch channels 322 collects in the main channel 321. Then, it flows from the output end of the main channel 321 into the guide member 600, and then enters the evaporation chamber 410 under the guidance of the guide member 600. By setting multiple branch channels 322, condensate can be collected more efficiently.

[0074] The evaporation assembly 400 includes a first evaporation section 441 and a second evaporation section 442. The first evaporation section 441 is attached to the burner 100 and has a first evaporation chamber 411. The second evaporation section 442 is attached to the main heat exchanger 200 and has a second evaporation chamber 412. The first evaporation chamber 411 and the second evaporation chamber 412 are connected and together form an evaporation chamber 410. By attaching the first evaporation section 441 to the burner 100, the condensate in the first evaporation chamber 411 can fully exchange heat with the burner 100. Similarly, by attaching the second evaporation section 442 to the main heat exchanger 200, the condensate in the second evaporation chamber 412 can fully exchange heat with the main heat exchanger 200, thereby improving the evaporation effect of the condensate and also more effectively reducing the temperature of the burner 100 and the main heat exchanger 200.

[0075] The evaporation chamber 410 includes an inlet 413, the width of which gradually increases in the direction away from and towards the condenser heat exchanger 300. By gradually increasing the width of the inlet 413 in the direction away from and towards the condenser heat exchanger 300, it is more conducive to the flow of condensate into the evaporation chamber 410.

[0076] The second heat exchanger 310 includes multiple heat exchange fins 311 and multiple heat exchange tubes 312. The multiple heat exchange fins 311 are disposed on the heat exchange tubes 312, and the multiple heat exchange tubes 312 are staggered in the direction x facing the high-temperature flue gas flow. By disposing of multiple heat exchange fins 311 on the heat exchange tubes 312 and staggering the multiple heat exchange tubes 312 in the direction x facing the high-temperature flue gas flow, the high-temperature flue gas can more fully contact the multiple heat exchange tubes 312, thereby improving the heat exchange effect of the condensing heat exchanger 300.

[0077] The water heater has an intelligent voice control module, which includes a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the water heater to perform corresponding operations, thereby realizing intelligent control of the water heater and improving the user experience of using this smart appliance.

[0078] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship of the device or component during normal use. They are used 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 at any time, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model in this respect.

[0079] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water heater, characterized in that, The water heater includes: A burner, wherein the burner is provided with a flue gas passage for supplying high-temperature flue gas flow; The main heat exchanger is provided with a plurality of first heat exchange elements for exchanging heat with the high-temperature flue gas. A condensing heat exchanger is provided, wherein the burner, the main heat exchanger and the condensing heat exchanger are arranged sequentially along the flow direction of the high-temperature flue gas, and the condensing heat exchanger is provided with multiple second heat exchange elements for exchanging heat with the high-temperature flue gas and condensate channels. An evaporation assembly is provided with an evaporation chamber, a water collection section, a liquid level detection device, and a controller. The evaporation assembly is in thermal contact with the burner and the main heat exchanger. The condensate channel is connected to the evaporation chamber. The water collection section is connected to the evaporation chamber and is used to collect unvaporized condensate. The liquid level detection device is used to detect the liquid level in the water collection section. A fan is connected to the evaporation chamber and is used to remove vaporized condensate from the evaporation chamber. The controller can adjust the speed of the fan according to the liquid level detected by the liquid level detection device.

2. The water heater as described in claim 1, characterized in that, The liquid level detection device includes a float and a sensor. The float is located inside the water collection section, and the sensor is located on the side wall of the water collection section. The sensor is used to detect the height of the float and output the detection signal to the controller.

3. The water heater as described in claim 1, characterized in that, The burner, the main heat exchanger, the condensing heat exchanger, and the fan are arranged in sequence along the vertical direction.

4. The water heater as described in claim 1, characterized in that, The evaporation assembly is located on the side of the burner and the main heat exchanger, the evaporation chamber extends vertically, and the water collection part is located at the lower end of the evaporation chamber.

5. The water heater as described in claim 1, characterized in that, The water heater also includes a flow guide, which is disposed between the condensing heat exchanger and the evaporation chamber, and the flow guide can guide the condensate in the condensing heat exchanger to the evaporation chamber.

6. The water heater as described in claim 5, characterized in that, The flow guide includes a first part and a second part. The first part extends obliquely toward the evaporation chamber, and the extension direction of the second part is perpendicular to the flow direction of the high-temperature flue gas.

7. The water heater as described in claim 5, characterized in that, The condensate channel includes a main channel and branch channels. Multiple branch channels are connected to the second heat exchanger. The condensate in the multiple branch channels is collected in the main channel. The output end of the main channel is oriented towards the guide element.

8. The water heater as described in claim 1, characterized in that, The evaporation assembly includes a first evaporation section and a second evaporation section. The first evaporation section is attached to the burner and has a first evaporation chamber. The second evaporation section is attached to the main heat exchanger and has a second evaporation chamber. The first evaporation chamber and the second evaporation chamber are connected and together form the evaporation chamber.

9. The water heater as described in claim 1, characterized in that, The evaporation chamber includes an inlet, the width of which gradually increases in the direction away from the condensing heat exchanger and towards the condensing heat exchanger.

10. The water heater as described in claim 1, characterized in that, The second heat exchanger includes multiple heat exchange fins and multiple heat exchange tubes. The multiple heat exchange fins are disposed on the heat exchange tubes, and the multiple heat exchange tubes are staggered in the flow direction facing the high-temperature flue gas.

Images