Inverted condensation type water heater

Abstract

The utility model discloses an inverted condensation type water heater which comprises a controller, a fan, a combustor, a heat exchanger, a smoke hood and a condenser, the fan, the combustor, the heat exchanger, the smoke hood and the condenser are sequentially arranged from top to bottom, the condenser comprises a shell and a heat exchange component arranged in the shell, and an air inlet and a smoke outlet are formed in the shell. One end of the smoke hood is communicated with the heat exchanger, the other end of the smoke hood is communicated with the air inlet, a condensate water outlet is formed in the bottom of the shell, at least two liquid level contacts are arranged on the side wall of the lower half portion of the shell to detect the liquid level of condensate water in the shell, and the liquid level contacts are electrically connected with the controller. And when the liquid level of the condensate water rises to enable the at least two liquid level contacts to be conducted, the controller receives a conduction signal and controls the combustor to stop working.

Description

Technical Field

[0001] The utility model relates to the technical field of gas water heaters, in particular to an inverted condensing water heater. Background Art

[0002] In common gas water heaters, the burner is usually located below the heat exchanger, and the condenser is usually located above the heat exchanger. In this way, the condensed water generated in the condenser will drip onto the heat exchanger and burner under the action of its own gravity, causing corrosion to the heat exchanger and burner; and if the drain outlet of the condensed water is blocked, the condensed water will continue to spread and flow from the air inlet of the smoke hood into the heat exchanger, affecting the normal operation of the entire machine. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide an inverted condensing water heater that avoids condensed water backflow and corrosion.

[0004] According to an embodiment of the utility model, the inverted condensing water heater includes a controller and a fan, a burner, a heat exchanger, a smoke hood and a condenser arranged in sequence from top to bottom. The condenser includes a shell and a heat exchange component arranged in the shell. The shell is provided with an air inlet and a smoke exhaust port. One end of the smoke hood is connected to the heat exchanger, and the other end of the smoke hood is connected to the air inlet. A condensate outlet is provided at the bottom of the shell. At least two liquid level contacts are provided on the side wall of the lower half of the shell to detect the liquid level of the condensate in the shell. The liquid level contacts are electrically connected to the controller. When the condensate level rises and at least two of the liquid level contacts are turned on, the controller receives a conduction signal and controls the burner to stop working.

[0005] The inverted condensing water heater according to the embodiment of the present invention has at least the following beneficial effects: first, the fan, burner, heat exchanger, smoke hood and condenser are arranged in an inverted manner from top to bottom, so that the condenser is located below other components, thereby preventing condensed water from dripping onto the burner and heat exchanger, thereby avoiding corrosion; second, since at least two liquid level contacts are provided on the shell of the condenser, when the condensed water outlet is blocked and the condensed water level rises and contacts the liquid level contacts, at least two liquid level contacts are turned on, and the controller will detect the conduction signal to control the burner to stop combustion, thereby avoiding backflow of condensate and further improving the reliability of the entire machine.

[0006] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings;

[0008] Figure 1 It is a structural diagram of an inverted condensing water heater;

[0009] Figure 2 yes Figure 1 Enlarged structural diagram of part A in the middle. DETAILED DESCRIPTION

[0010] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0011] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0012] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0013] Reference Figure 1 and Figure 2The utility model is an inverted condensing water heater, comprising a controller 10 and a fan 11, a burner 12, a heat exchanger 13, a smoke hood 14 and a condenser arranged in sequence from top to bottom. The condenser comprises a shell 16 and a heat exchange component 17 arranged in the shell 16. The shell 16 is provided with an air inlet 161 and a smoke exhaust port. One end of the smoke hood 14 is communicated with the heat exchanger 13, and the other end of the smoke hood 14 is communicated with the air inlet 161. A condensate outlet 162 is provided at the bottom of the shell 16. At least two liquid level contacts 18 are provided on the side wall of the lower half of the shell 16 to detect the liquid level of the condensate in the shell 16. The liquid level contacts 18 are electrically connected to the controller 10. When the condensate level rises and the at least two liquid level contacts are turned on, the controller 10 receives a conduction signal and controls the burner 12 to stop working. First, the fan, burner, heat exchanger, smoke hood and condenser are arranged in an inverted manner from top to bottom, so that the condenser is located below other components to prevent condensed water from dripping onto the burner and heat exchanger, thereby avoiding corrosion; secondly, since at least two liquid level contacts are provided on the condenser shell, when the condensed water outlet is blocked and the condensed water level rises and contacts the liquid level contacts, at least two liquid level contacts will be turned on, and the controller will detect the conduction signal to control the burner to stop combustion, thereby avoiding backflow of condensate and further improving the reliability of the entire machine.

[0014] Preferably, the liquid level contact 18 includes a positive liquid level contact and a negative liquid level contact arranged on opposite side walls of the shell 16. The controller 10 is electrically connected to the positive liquid level contact and the negative liquid level contact, respectively. When blockage occurs, the condensation water level rises until the positive liquid level contact and the negative liquid level contact are conductive. After detecting the conductive current, the controller 10 controls the entire machine to stop combustion and close the gas proportional valve 15, thereby playing a protective role.

[0015] like Figure 2 As shown, the liquid level contact includes a screw 181, two nuts 182, an inner insulating ring 183, an outer insulating ring 184, and an electrical connector 185. A through-hole is provided in the side wall of the housing 16. The screw 181 passes through the inner insulating ring 183, the through-hole, the outer insulating ring 184, one nut 182, the electrical connector 185, and another nut 182 in sequence from the inside of the housing 16 to the outside. The electrical connector is electrically connected to the controller via a wire, resulting in a simple structure and excellent insulation and waterproof performance. In some embodiments, two inner insulating rings 183 are provided to further improve insulation and sealing performance.

[0016] Furthermore, the bottom of the shell 16 is in the form of an inclined surface, and the condensed water outlet 162 is arranged below the inclined surface, so that the condensed water can be collected downward through the inclined surface.

[0017] Furthermore, the fan 11 is a strong-drum fan 11, which makes the combustion mixing more complete and improves the combustion efficiency.

[0018] Furthermore, it also includes a gas proportional valve 15 connected to the burner 12, and the controller 10 is electrically connected to the gas proportional valve 15. The controller 10 can control the working state of the gas proportional valve 15 according to the liquid level information.

[0019] Furthermore, the heat exchange component 17 is a heat exchange coil, and the shell 16 is provided with a water outlet 163 connected to one end of the heat exchange coil, and a hot water inlet 164 connected to the heat exchanger 13 and the other end of the heat exchange coil respectively. The hot water after the first heat exchange in the heat exchanger 13 enters the heat exchange coil through the hot water inlet 164 to perform a secondary heat exchange with the high-temperature flue gas. The hot water after the heat exchange flows out through the water outlet 163, effectively utilizing the heat of the high-temperature flue gas, thereby achieving the effect of energy saving and emission reduction.

[0020] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above preferred embodiments can be freely combined and superimposed.

[0021] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An inverted condensing water heater, characterized in that: include: A controller (10) and a fan (11), a burner (12), a heat exchanger (13), a smoke hood (14) and a condenser are sequentially arranged from top to bottom. The condenser includes a shell (16) and a heat exchange component (17) arranged in the shell (16). The shell (16) is provided with an air inlet (161) and a smoke exhaust port. One end of the smoke hood (14) is communicated with the heat exchanger (13), and the other end of the smoke hood (14) is communicated with the air inlet (161). A condensate outlet (162) is provided at the bottom of the shell (16). At least two liquid level contacts (18) are provided on the side wall of the lower half of the shell (16) to detect the liquid level of condensate in the shell (16). The liquid level contacts (18) are electrically connected to the controller (10). When the condensate level rises and at least two of the liquid level contacts are turned on, the controller (10) receives a turn-on signal and controls the burner (12) to stop working.

2. The inverted condensing water heater according to claim 1, characterized in that: The liquid level contact (18) includes a positive liquid level contact and a negative liquid level contact arranged on opposite side walls of the shell (16). The rising level of the condensed water causes the positive liquid level contact and the negative liquid level contact to be conductive, and the controller (10) is electrically connected to the positive liquid level contact and the negative liquid level contact, respectively.

3. The inverted condensing water heater according to claim 2, characterized in that: The liquid level contact comprises a screw (181), two nuts (182), an inner insulating ring (183), an outer insulating ring (184) and an electrical connector (185); a through hole is provided on the side wall of the shell (16); the screw (181) passes through the inner insulating ring (183), the through hole, the outer insulating ring (184), one nut (182), the electrical connector (185) and another nut (182) in sequence from the inside to the outside of the shell (16); and the electrical connector is electrically connected to the controller via a wire.

4. The inverted condensing water heater according to claim 1, characterized in that: The bottom of the shell (16) is in the form of an inclined surface, and the condensed water outlet (162) is arranged below the inclined surface.

5. The inverted condensing water heater according to claim 1, characterized in that: The heat exchange component (17) is a heat exchange coil, and the shell (16) is provided with a water outlet (163) connected to one end of the heat exchange coil, and a hot water inlet (164) connected to the heat exchanger (13) and the other end of the heat exchange coil respectively.

6. The inverted condensing water heater according to claim 1, characterized in that: It also includes a gas proportional valve (15) in communication with the burner (12), the controller (10) is electrically connected to the gas proportional valve (15), and the controller (10) can control the working state of the gas proportional valve (15) according to the liquid level information.

7. The inverted condensing water heater according to claim 1, characterized in that: The fan (11) is a strong drum fan.

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