WO2017193479A1 - Gas water heater - Google Patents

Gas water heater Download PDF

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Publication number
WO2017193479A1
WO2017193479A1 PCT/CN2016/091931 CN2016091931W WO2017193479A1 WO 2017193479 A1 WO2017193479 A1 WO 2017193479A1 CN 2016091931 W CN2016091931 W CN 2016091931W WO 2017193479 A1 WO2017193479 A1 WO 2017193479A1
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WO
WIPO (PCT)
Prior art keywords
burner
gas
water heater
heat exchanger
catalyst
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PCT/CN2016/091931
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French (fr)
Chinese (zh)
Inventor
寿利萍
梁国荣
黄官贤
但清海
Original Assignee
芜湖美的厨卫电器制造有限公司
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Priority to CN201610317119.0A priority Critical patent/CN105823204A/en
Priority to CN201620435279.0U priority patent/CN205783717U/en
Priority to CN201620435279.0 priority
Priority to CN201610317119.0 priority
Application filed by 芜湖美的厨卫电器制造有限公司 filed Critical 芜湖美的厨卫电器制造有限公司
Publication of WO2017193479A1 publication Critical patent/WO2017193479A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12Radiant burners
    • F23D14/18Radiant burners using catalysis for flameless combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H1/00Water heaters having heat generating means, e.g. boiler, flow- heater, water-storage heater
    • F24H1/10Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium

Abstract

A gas water heater (100) comprises: a housing (10), in which an accommodation cavity (13) is defined; a pre-mixing chamber casing (20), wherein the pre-mixing chamber casing (20) is disposed in the accommodation cavity (13), and a mixing chamber is defined in the pre-mixing chamber casing (20); a burner (30), disposed below the mixing chamber; a heat exchanger (40), disposed below the burner (30) and connected to the burner (30) to absorb heat generated by the burner (30); a pre-heating plate (50), connected to the burner (30) to pre-heat the burner (30); and a controller, connected to the pre-heating plate (50) to control heating temperature of the pre-heating plate (50).

Description

燃气热水器Gas water heater 技术领域Technical field
本发明涉及热水器技术领域,更具体地,涉及一种燃气热水器。The invention relates to the technical field of water heaters, and more particularly to a gas water heater.
背景技术Background technique
相关技术中的燃气热水器的燃烧器采用的主要燃烧方式为有焰燃烧,不但会使能源利用率降低,而且燃烧过程中会排放大量的污染物,是造成雾霾天气频发的主要原因之一。因此,用高效、清洁的燃烧方式代替传统的低效燃烧方式被认为是最理想的燃烧方式。The main combustion method of the burner of the gas water heater in the related art is flaming combustion, which not only reduces the energy utilization rate, but also emits a large amount of pollutants during the combustion process, which is one of the main causes of frequent smog weather. . Therefore, replacing the traditional inefficient combustion method with an efficient and clean combustion method is considered to be the most ideal combustion method.
发明内容Summary of the invention
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此,本发明提出一种燃气热水器,该燃气热水器的结构简单,各部件连接可靠,装拆方便,燃料在燃烧器内可以进行无焰催化燃烧,可以避免产生有害气体,使用安全、环保。The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, the present invention provides a gas water heater, which has a simple structure, reliable connection of various components, convenient assembly and disassembly, and fuel can be subjected to flameless catalytic combustion in the burner, which can avoid generation of harmful gases, and is safe and environmentally friendly.
根据本发明实施例的燃气热水器,包括:壳体,所述壳体内限定有容纳腔,所述壳体具有排气口、热水出口和冷水进口;预混合腔体壳,所述预混合腔体壳设在所述容纳腔内,所述预混合腔体壳内限定有混合腔;燃烧器,所述燃烧器设在所述混合腔的下方,所述燃烧器与所述混合腔导通,所述燃烧器内设有催化所述燃烧器进行无烟催化燃烧的催化剂;换热器,所述换热器设在所述燃烧器的下方且与所述燃烧器相连以吸收所述燃烧器燃烧产生的热量,所述换热器具有进水口和出水口,所述进水口与所述冷水进口导通,所述出水口与所述热水出口导通;预加热盘,所述预加热盘与所述燃烧器相连以对所述燃烧器进行预加热;控制器,所述控制器与所述预加热盘相连以控制所述预加热盘的加热温度。A gas water heater according to an embodiment of the present invention includes: a casing defining a receiving chamber therein, the casing having an exhaust port, a hot water outlet, and a cold water inlet; a premixing cavity shell, the premixing chamber a body casing is disposed in the accommodating cavity, a pre-mixing cavity body defines a mixing cavity therein; a burner, the burner is disposed under the mixing cavity, and the burner is electrically connected to the mixing cavity a catalyst for catalyzing the smokeless catalytic combustion of the burner; a heat exchanger disposed below the burner and connected to the burner to absorb the combustion The heat generated by the combustion, the heat exchanger having a water inlet and a water outlet, the water inlet is electrically connected to the cold water inlet, the water outlet is electrically connected to the hot water outlet; the preheating tray, the preheating A heating plate is coupled to the burner to preheat the burner; a controller coupled to the preheating plate to control a heating temperature of the preheating plate.
根据本发明实施例的燃气热水器,通过在燃烧器内设置用于使燃料发生无焰催化燃烧的催化剂,并在燃烧器外设置预加热盘,使预加热盘可以对燃烧器内的催化剂进行预热,从而降低燃料的起燃温度,使燃料可以进行充分燃烧并加深其氧化程度,既可以提高燃料的反应速率,提高燃料的利用率,又可以避免有害气体(一氧化碳和氮氧化物)的产生,从源头控制一氧化碳和氮氧化物的产生。该燃气热水器的结构简单,各部件连接可靠,装拆方便,燃料在燃烧器内可以进行无焰催化燃烧,大大地降低了有害气体的产生,使用安全、环保。According to the gas water heater of the embodiment of the present invention, the preheating tray can pre-catalyze the catalyst in the burner by providing a catalyst for generating flameless catalytic combustion of the fuel in the burner and providing a preheating tray outside the burner. Heat, which lowers the light-off temperature of the fuel, allows the fuel to fully burn and deepen its oxidation level, which not only improves the fuel reaction rate, improves the fuel utilization rate, but also avoids the generation of harmful gases (carbon monoxide and nitrogen oxides). Control the production of carbon monoxide and nitrogen oxides from the source. The gas water heater has a simple structure, reliable connection of various components, convenient assembly and disassembly, and fuel can be flameless catalytic combustion in the burner, which greatly reduces the generation of harmful gases, and is safe and environmentally friendly.
另外,根据本发明实施例的燃气热水器,还可以具有如下附加的技术特征:In addition, the gas water heater according to the embodiment of the present invention may further have the following additional technical features:
根据本发明的一个实施例,还包括风机和燃气比例阀,所述风机和所述燃气比例阀分别与所述控制器相连,所述风机设在所述混合腔的上方以向所述混合腔输送空气,所述燃 气比例阀与所述燃烧器相连以向所述混合腔输送所述燃气。According to an embodiment of the present invention, a fan and a gas proportional valve are further included, the fan and the gas proportional valve are respectively connected to the controller, and the fan is disposed above the mixing chamber to the mixing chamber Conveying air A gas proportional valve is coupled to the burner to deliver the gas to the mixing chamber.
根据本发明的一个实施例,所述预加热盘对所述燃烧器的预加热温度控制在300℃-400℃。According to an embodiment of the invention, the preheating temperature of the preheating tray to the burner is controlled between 300 ° C and 400 ° C.
根据本发明的一个实施例,所述预加热盘采用电加热方式进行加热。According to an embodiment of the invention, the preheating disk is heated by electrical heating.
根据本发明的一个实施例,所述催化剂为贵金属材料件或者非金属材料件。According to an embodiment of the invention, the catalyst is a piece of precious metal material or a piece of non-metallic material.
根据本发明的一个实施例,所述催化剂涂覆在所述燃烧器的内壁面上。According to an embodiment of the invention, the catalyst is coated on the inner wall surface of the burner.
根据本发明的一个实施例,所述燃烧器内设有催化剂载体,所述催化剂涂覆在所述催化剂载体的表面。According to an embodiment of the invention, a catalyst carrier is provided in the burner, and the catalyst is coated on the surface of the catalyst carrier.
根据本发明的一个实施例,所述催化剂载体为蜂窝陶瓷。According to an embodiment of the invention, the catalyst support is a honeycomb ceramic.
根据本发明的一个实施例,所述燃烧器内设有温度检测器以检测所述催化剂的加热温度。According to an embodiment of the invention, a temperature detector is provided in the burner to detect the heating temperature of the catalyst.
根据本发明的一个实施例,所述催化剂的加热温度为T,若T>400℃,所述控制器控制所述风机与所述燃气比例阀分别启动以向所述混合腔输送所述空气和所述燃气;若T>700℃,所述控制器控制所述预加热盘停止加热。According to an embodiment of the present invention, the heating temperature of the catalyst is T, and if T>400 ° C, the controller controls the fan and the gas proportional valve to be respectively activated to deliver the air to the mixing chamber and The gas; if T>700 ° C, the controller controls the preheating tray to stop heating.
根据本发明的一个实施例,所述混合腔内设有扰流片或者阻尼件,以将所述空气与所述燃气充分混合。According to an embodiment of the invention, a spoiler or a damper is provided in the mixing chamber to sufficiently mix the air with the gas.
根据本发明的一个实施例,还包括集烟罩,所述集烟罩与所述换热器相连且与所述排气口导通,所述集烟罩用于收集和排放与所述燃烧器燃烧产生的烟气。According to an embodiment of the present invention, a hood is further provided, the hood is connected to the heat exchanger and is electrically connected to the exhaust port, and the hood is used for collecting and discharging and burning The smoke produced by the combustion of the device.
根据本发明的一个实施例,还包括缓冲水罐,所述缓冲水罐设在所述容纳腔内,所述缓冲水罐在水流方向上位于所述出水口与所述热水出口之间且分别与所述出水口和所述热水出口连通。According to an embodiment of the present invention, further comprising a buffer water tank disposed in the accommodating chamber, the buffer water tank being located between the water outlet and the hot water outlet in a water flow direction and And communicating with the water outlet and the hot water outlet respectively.
根据本发明的一个实施例,所述换热器包括第一换热器和第二换热器,所述第一换热器设在所述第二换热器的上方且位于所述燃烧器与所述第二换热器之间。According to an embodiment of the invention, the heat exchanger comprises a first heat exchanger and a second heat exchanger, the first heat exchanger being disposed above the second heat exchanger and located at the burner Between the second heat exchanger and the second heat exchanger.
本发明的附加方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本发明的实践了解到。The additional aspects and advantages of the invention will be set forth in part in the description which follows.
附图说明DRAWINGS
图1是根据本发明实施例的燃气热水器的结构示意图。1 is a schematic structural view of a gas water heater according to an embodiment of the present invention.
附图标记:Reference mark:
100:燃气热水器;100: gas water heater;
10:壳体;11:进气口;12:排气口;13:容纳腔; 10: housing; 11: air inlet; 12: exhaust port; 13: receiving chamber;
20:预混合腔体壳;20: pre-mixing the cavity shell;
30:燃烧器;31:温度检测器;30: burner; 31: temperature detector;
40:换热器;40a:第一换热器;40b:第二换热器;41:缓冲水罐;40: heat exchanger; 40a: first heat exchanger; 40b: second heat exchanger; 41: buffer water tank;
50:预加热盘;50: preheating plate;
70:风机;70: fan;
80:燃气比例阀;80: gas proportional valve;
90:集烟罩;91:冷凝水盒。90: collecting hood; 91: condensing water box.
具体实施方式detailed description
下面详细描述本发明的实施例,所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的,旨在用于解释本发明,而不能理解为对本发明的限制。Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.
燃气热水器的燃烧器采用的主要燃烧方式为有焰燃烧:燃气和空气在燃烧装置中不预先进行混合,而是分别将他们送进燃烧室中,并在燃烧室内边混合边燃烧,该种燃烧方式燃烧产生的火焰较长,并有鲜明的轮廓,属于扩散燃烧。有焰燃烧由于活化能较高,燃烧速度慢,燃烧不完全,会导致热效率下降。此外,有焰燃烧火焰的气体辐射量较小,以对流换热为主要传热方式,会降低能源利用率。再者,由于燃烧的不同部位与空气接触的差异,会导致燃烧的完全程度和温度也不同。具体地,在高温区,由于温度高,导致空气中的氧气和氮气反应生成氮氧化物污染物;低温区,由于燃烧不完全,会产生一氧化碳、碳氢化合物和焦油等有害物质。The main combustion mode of the burner of a gas water heater is flaming combustion: gas and air are not pre-mixed in the combustion device, but they are respectively sent into the combustion chamber and burned while mixing in the combustion chamber. The way the combustion produces a longer flame with a sharp outline that belongs to diffusion combustion. Flaming combustion results in higher activation energy, slower burning, and incomplete combustion, which leads to a decrease in thermal efficiency. In addition, the amount of gas radiation from a flame combustion flame is small, and convective heat transfer is the main heat transfer mode, which reduces energy utilization. Furthermore, due to the difference in contact between the different parts of the combustion and the air, the degree of completeness of combustion and the temperature are also different. Specifically, in the high temperature region, due to the high temperature, oxygen and nitrogen in the air react to form nitrogen oxide contaminants; in the low temperature region, harmful substances such as carbon monoxide, hydrocarbons, and tar are generated due to incomplete combustion.
为此,本发明提出一种燃气热水器100,该燃气热水器100的结构简单,各部件连接可靠,装拆方便,燃料在燃烧器30内可以进行无焰催化燃烧,可以避免产生有害气体,使用安全、环保。To this end, the present invention provides a gas water heater 100. The gas water heater 100 has a simple structure, reliable connection of components, convenient assembly and disassembly, and fuel can be flameless catalytic combustion in the burner 30 to avoid generation of harmful gases and safe use. And environmental protection.
下面结合附图1具体描述根据本发明实施例的燃气热水器100。A gas water heater 100 according to an embodiment of the present invention will be specifically described below with reference to FIG.
根据本发明实施例的燃气热水器100包括壳体10、预混合腔体壳20、燃烧器30、换热器40、预加热盘50和控制器(未示出)。具体而言,壳体10内限定有容纳腔13,壳体10具有排气口12、热水出口(未示出)和冷水进口(未示出),预混合腔体壳20设在容纳腔13内,预混合腔体壳20内限定有混合腔,燃烧器30设在混合腔的下方,燃烧器30与混合腔导通,燃烧器30内设有催化燃烧器30进行无烟催化燃烧的催化剂,换热器40设在燃烧器30的下方且与燃烧器30相连以吸收燃烧器30燃烧产生的热量,换热器40具有进水口和出水口,进水口与冷水进口导通,出水口与热水出口导通,预加热盘50与燃烧器30相连以对燃烧器30进行预加热,控制器与预加热盘50相连以控制预加热盘50的加热温度。 A gas water heater 100 according to an embodiment of the present invention includes a housing 10, a premixing chamber housing 20, a combustor 30, a heat exchanger 40, a preheating tray 50, and a controller (not shown). Specifically, the housing 10 defines a receiving chamber 13 having an exhaust port 12, a hot water outlet (not shown), and a cold water inlet (not shown), and the premixing chamber housing 20 is disposed in the receiving chamber. In the pre-mixing cavity shell 20, a mixing chamber is defined, the burner 30 is disposed below the mixing chamber, the burner 30 is electrically connected to the mixing chamber, and the catalytic burner 30 is provided in the burner 30 for the smokeless catalytic combustion. The catalyst, the heat exchanger 40 is disposed below the burner 30 and connected to the burner 30 to absorb the heat generated by the combustion of the burner 30. The heat exchanger 40 has a water inlet and a water outlet, and the water inlet is connected to the cold water inlet, and the water outlet is connected. In conjunction with the hot water outlet, the preheating tray 50 is coupled to the burner 30 to preheat the burner 30, and the controller is coupled to the preheating tray 50 to control the heating temperature of the preheating tray 50.
换言之,该燃气热水器100主要由壳体10、预混合腔体壳20、燃烧器30、换热器40、预加热盘50和控制器组成。其中,壳体10沿竖直方向(如图1所示的上下方向)延伸,壳体10内限定有容纳腔,壳体10具有燃料的进气口11、废气的排气口12,预混合腔体壳20内限定有用于容纳空气和燃气的混合腔,预混合腔体壳20具有与混合腔导通的燃气进口、空气进口和混合气体出口,燃烧器30与预混合腔体壳20连通以使混合腔内的燃料可以进入燃烧器30内进行燃烧。In other words, the gas water heater 100 is mainly composed of a housing 10, a premixing chamber housing 20, a burner 30, a heat exchanger 40, a preheating tray 50, and a controller. Wherein, the housing 10 extends in a vertical direction (up and down direction as shown in FIG. 1), and a housing cavity is defined in the housing 10. The housing 10 has a fuel inlet 11 and an exhaust port 12 for exhaust gas, and is premixed. A cavity for housing air and gas is defined in the cavity housing 20. The premixing cavity housing 20 has a gas inlet, an air inlet and a mixed gas outlet that are electrically connected to the mixing chamber, and the burner 30 is connected to the premixing chamber housing 20. The fuel in the mixing chamber can enter the combustor 30 for combustion.
具体地,燃烧器30内设有催化剂,该催化剂可以降低燃料的起燃温度,并加深其氧化程度,使有机物在交底的起燃温度下发生无焰燃烧,并将燃料氧化分解为燃烧的最终产物二氧化碳和水,与此同时,释放大量的热量,燃料的反应物分子可以富集于催化剂的表面,提高反应速率,提高燃料的利用率,该催化剂可以有效抑制氮氧化物的产生,同事催化燃烧比较完全,降低烟气中一氧化碳的含量,从而有效降低有害气体的排放。预加热盘50与燃烧器30相连以对燃烧器30进行预加热至一定温度,预加热盘50可以对燃烧器30内的催化剂进行预加热至一定温度,从而使空气与燃气的混合气体一进入燃烧器30内就可以发生无焰燃烧,减少燃料在起燃时产生的有害气体。Specifically, the burner 30 is provided with a catalyst which can lower the light-off temperature of the fuel and deepen the oxidation degree thereof, so that the organic matter is flamelessly burned at the light-off temperature of the bottom, and the fuel is oxidized and decomposed into the final combustion. The product carbon dioxide and water, at the same time, release a large amount of heat, the reactant molecules of the fuel can be concentrated on the surface of the catalyst, increase the reaction rate, improve the utilization of fuel, the catalyst can effectively inhibit the production of nitrogen oxides, colleagues catalyze The combustion is relatively complete, reducing the content of carbon monoxide in the flue gas, thereby effectively reducing the emission of harmful gases. The preheating tray 50 is connected to the burner 30 to preheat the burner 30 to a certain temperature. The preheating tray 50 can preheat the catalyst in the burner 30 to a certain temperature, so that the mixed gas of air and gas enters. Flameless combustion can occur within the combustor 30, reducing the harmful gases generated by the fuel at the time of ignition.
换热器40与燃烧器30相连,当燃烧器30工作时,换热器40内的水可以吸收燃烧器30产生的热量,由此形成热水以供用户使用。例如,燃烧器30产生的大量热量可以与换热器40的表面直接进行热交换,从而达到对换热器40内的水加热的目的,具体地,换热器40上设有翅片,高温烟气冲击换热器40上的翅片,进行换热。当然,本发明并不限于此,换热器40内还可有设置多个用流通水的水管,换热器40的外部设有与水管连通的进水管和出水管,系统可以通过进水管(未示出)向换热器40的水管注入冷水,燃料在燃烧器30内进行燃烧会产生高温烟气,高温烟气进入热水器内并与水管内的水进行热交换,从而达到对换热器40内的水加热的目的,最后换热器40内的热水从出水管(未示出)排出燃气热水器100外以供用户使用。The heat exchanger 40 is coupled to the combustor 30. When the combustor 30 is in operation, water in the heat exchanger 40 can absorb the heat generated by the combustor 30, thereby forming hot water for use by the user. For example, a large amount of heat generated by the burner 30 can be directly exchanged with the surface of the heat exchanger 40 to achieve the purpose of heating the water in the heat exchanger 40. Specifically, the heat exchanger 40 is provided with fins and a high temperature. The flue gas impinges on the fins on the heat exchanger 40 for heat exchange. Of course, the present invention is not limited thereto, and a plurality of water pipes for circulating water may be disposed in the heat exchanger 40. The outside of the heat exchanger 40 is provided with an inlet pipe and an outlet pipe communicating with the water pipe, and the system may pass through the water inlet pipe ( Not shown) injecting cold water into the water pipe of the heat exchanger 40, the combustion of the fuel in the burner 30 generates high-temperature flue gas, and the high-temperature flue gas enters the water heater and exchanges heat with the water in the water pipe to reach the heat exchanger. For the purpose of water heating in 40, the hot water in the heat exchanger 40 is finally discharged from the outlet pipe (not shown) out of the gas water heater 100 for use by the user.
具体地,如图1所示,在本实施例中,预混合腔体壳20、燃烧器30、换热器40、预加热盘50、风机70、燃气比例阀80均设在壳体10的容纳腔13内,其中,燃烧器30的上方和下方分别设有风机70和换热器40,风机70与燃烧器30之间设有预混合腔体壳20,预加热盘50与燃烧器30相连以对燃烧器30内的催化剂进行预加热,当燃气热水器100工作时,空气和燃气分别进入混合腔混合均匀,然后燃料由上至下流动、进入位于混合腔下方的燃烧器30内进行燃烧,燃烧器30产生的高温烟气由上至下进入换热器40内与水管内的冷水进行换热,从而实现加热水的目的,在此过程中,风机70的运行可以为预加热盘50对燃烧器30预热提供方向支持。Specifically, as shown in FIG. 1 , in the present embodiment, the pre-mixing cavity shell 20 , the burner 30 , the heat exchanger 40 , the preheating tray 50 , the fan 70 , and the gas proportional valve 80 are all disposed on the casing 10 . The accommodating chamber 13 is provided with a fan 70 and a heat exchanger 40 respectively above and below the burner 30. A premixing chamber shell 20, a preheating tray 50 and a burner 30 are disposed between the fan 70 and the burner 30. Connected to preheat the catalyst in the burner 30. When the gas water heater 100 is in operation, the air and the gas respectively enter the mixing chamber and mix uniformly, and then the fuel flows from top to bottom into the burner 30 located below the mixing chamber for combustion. The high-temperature flue gas generated by the burner 30 enters the heat exchanger 40 from the top to the bottom to exchange heat with the cold water in the water pipe, thereby achieving the purpose of heating the water. In the process, the fan 70 can be operated as the preheating plate 50. Directional support is provided for preheating the burner 30.
由此,根据本发明实施例的燃气热水器100,通过在燃烧器30内设置用于使燃料发生 无焰催化燃烧的催化剂,并在燃烧器30外设置预加热盘50,使预加热盘50可以对燃烧器30内的催化剂进行预热,从而降低燃料的起燃温度,使燃料可以进行充分燃烧并加深其氧化程度,既可以提高燃料的反应速率,提高燃料的利用率,又可以避免有害气体(一氧化碳和氮氧化物)的产生,从源头控制一氧化碳和氮氧化物的产生。该燃气热水器100的结构简单,各部件连接可靠,装拆方便,燃料在燃烧器30内可以进行无焰催化燃烧,大大地降低了有害气体的产生,使用安全、环保。Thus, the gas water heater 100 according to an embodiment of the present invention is provided for generating fuel by being disposed in the burner 30. A catalyst for flameless catalytic combustion, and a preheating plate 50 is disposed outside the burner 30, so that the preheating plate 50 can preheat the catalyst in the burner 30, thereby reducing the light-off temperature of the fuel, so that the fuel can be fully burned. And to deepen its oxidation degree, it can not only improve the fuel reaction rate, improve the fuel utilization rate, but also avoid the generation of harmful gases (carbon monoxide and nitrogen oxides), and control the production of carbon monoxide and nitrogen oxides from the source. The gas water heater 100 has a simple structure, reliable connection of various components, convenient assembly and disassembly, and fuel can be flameless catalytic combustion in the burner 30, which greatly reduces the generation of harmful gases, and is safe and environmentally friendly.
当燃气热水器100工作时,风机70和燃气比例阀80分别向混合腔内输送空气和燃气,空气和燃气在混合腔内进行充分混合均匀后,进入位于混合腔下方的燃烧器30内进行燃烧,由于预加热盘50已经对燃烧器30内的催化剂进行预加热,因此,燃料一进入燃烧器30内便可以进行无焰催化燃烧,在催化燃烧过程中,催化剂的作用是降低燃料的起燃温度,并加深其氧化程度,使有机物在较低的起燃温度条件下发生无焰燃烧,并氧化分解为燃烧最终产物二氧化碳和水,释放出大量热量,同时使反应物分子富集于催化剂表面,以提高反应速率、提高燃料利用率,大大地减少燃料燃烧产生的有害气体。When the gas water heater 100 is in operation, the fan 70 and the gas proportional valve 80 respectively deliver air and gas into the mixing chamber, and the air and the gas are thoroughly mixed in the mixing chamber, and then enter the burner 30 located below the mixing chamber for combustion. Since the preheating plate 50 has preheated the catalyst in the burner 30, the flame can be subjected to flameless catalytic combustion as soon as the fuel enters the burner 30. In the catalytic combustion process, the catalyst acts to lower the light-off temperature of the fuel. And deepen the degree of oxidation, so that the organic matter undergoes flameless combustion at a lower light-off temperature, and oxidatively decomposes to burn the final product carbon dioxide and water, releasing a large amount of heat while enriching the reactant molecules on the catalyst surface. In order to increase the reaction rate, improve fuel utilization, and greatly reduce harmful gases generated by fuel combustion.
与相关技术中采用有焰燃烧的燃气热水器相比,该燃气热水器100的结构简单,各部件连接可靠,布局合理,装拆方便,通过在燃烧器30内设置催化剂,并设置可以对燃烧器30进行预加热的预加热盘50,可以降低燃料的催化燃烧温度,有效抑制氮氧化物的产生,同时燃料的催化燃烧比较完全,可以降低烟气中一氧化碳的含量,从而有效降低有害气体的排放。该燃气热水器100既可以使燃料完全燃烧,提高燃料的燃烧效率,从而提高燃气热水器100的加热效率,又可以减少有害气体(例如一氧化碳以及氮氧化物)的排放,使用安全、环保。Compared with the gas water heater using flaming combustion in the related art, the gas water heater 100 has a simple structure, reliable connection of various components, reasonable layout, convenient assembly and disassembly, and a catalyst can be disposed in the burner 30, and the burner 30 can be disposed. The preheating preheating plate 50 can reduce the catalytic combustion temperature of the fuel, effectively suppress the generation of nitrogen oxides, and at the same time, the catalytic combustion of the fuel is relatively complete, and the content of carbon monoxide in the flue gas can be reduced, thereby effectively reducing the emission of harmful gases. The gas water heater 100 can completely burn the fuel, improve the combustion efficiency of the fuel, thereby improving the heating efficiency of the gas water heater 100, and reducing the emission of harmful gases (such as carbon monoxide and nitrogen oxides), and is safe and environmentally friendly.
其中,根据本发明的一个实施例,燃气热水器100还包括风机70和燃气比例阀80,风机70和燃气比例阀80分别与控制器相连,风机70设在混合腔的上方以向混合腔输送空气,从而为空气的流动提供动力,燃气比例阀80与燃烧器30相连以向混合腔输送燃气,保证燃气热水器100的燃料供给,从而保证燃气热水器100的正常工作。According to an embodiment of the present invention, the gas water heater 100 further includes a fan 70 and a gas proportional valve 80. The fan 70 and the gas proportional valve 80 are respectively connected to the controller, and the fan 70 is disposed above the mixing chamber to deliver air to the mixing chamber. In order to provide power for the flow of air, the gas proportional valve 80 is connected to the burner 30 to deliver the gas to the mixing chamber to ensure the fuel supply of the gas water heater 100, thereby ensuring the normal operation of the gas water heater 100.
其中,预加热盘50对燃烧器30的预加热温度控制在300℃-400℃。也就是说,在向燃烧器30内通燃料之前,控制器控制预加热盘50对燃烧器30进行预热,使燃烧器30内的催化剂预热至300℃-400℃,最终降低进入燃烧器30内的燃气的起燃温度,使燃料可以发生无焰燃烧,减少有害气体的产生。The preheating temperature of the preheating plate 50 to the burner 30 is controlled at 300 ° C to 400 ° C. That is, before passing the fuel into the combustor 30, the controller controls the preheating tray 50 to preheat the combustor 30, preheating the catalyst in the combustor 30 to 300 ° C - 400 ° C, and finally lowering into the combustor. The light-off temperature of the gas within 30 allows the fuel to undergo flameless combustion and reduces the generation of harmful gases.
优选地,根据本发明的一个实施例,预加热盘50采用电加热方式进行加热。例如,预加热盘50可以采用电磁加热,还可以采用电阻电热等,通过将预加热盘50与燃烧器30相连,可以对燃烧器30进行预热,即可以对燃烧器30内的催化剂进行预热,从而降低燃料的起燃温度,从而加深燃料的氧化程度,使燃料在较低的起燃温度条件下发生无焰燃烧, 减少有害气体的产生,更加环保。Preferably, in accordance with an embodiment of the present invention, the preheating tray 50 is heated by electrical heating. For example, the preheating tray 50 may be electromagnetically heated, or may be electrically heated by electric resistance, etc., by connecting the preheating tray 50 to the burner 30, the burner 30 may be preheated, that is, the catalyst in the burner 30 may be pre-prepared. Heat, thereby reducing the light-off temperature of the fuel, thereby deepening the oxidation of the fuel, causing the flame to burn at a lower light-off temperature, Reduce the generation of harmful gases and be more environmentally friendly.
可选地,根据本发明的一个实施例,催化剂为贵金属材料件或者非金属材料件。在本发明的一些具体实施例中,催化剂涂覆在燃烧器30的内壁面上。具体地,燃烧器30的内表面涂覆有贵金属层,燃气进入燃烧器30内,燃烧器30的内表面上的贵金属可以对燃气进行催化,在贵金属作用下、燃料的起燃温度可以降低到350℃,有效地降低了燃烧器30火口温度,抑制氮氧化物的产生,同时催化剂可使一氧化碳氧化成二氧化碳,以此达到降低有害气体排放的目的。Optionally, in accordance with an embodiment of the invention, the catalyst is a piece of precious metal material or a piece of non-metallic material. In some embodiments of the invention, the catalyst is coated on the inner wall surface of the combustor 30. Specifically, the inner surface of the burner 30 is coated with a precious metal layer, and the gas enters the burner 30. The noble metal on the inner surface of the burner 30 can catalyze the gas, and under the action of the noble metal, the light-off temperature of the fuel can be lowered to At 350 ° C, the burner temperature of the burner 30 is effectively reduced, and the generation of nitrogen oxides is suppressed, and the catalyst can oxidize carbon monoxide to carbon dioxide, thereby achieving the purpose of reducing harmful gas emissions.
在本发明的另一些具体实施例中,燃烧器30内设有催化剂载体,催化剂涂覆在催化剂载体的表面。优选地,催化剂载体为蜂窝陶瓷。耐高温1200℃,保证燃烧器30内的催化剂的可靠性,从而延长使用寿命。当空气与燃气的混合气体进入燃烧器30内时,催化剂载体上的催化剂可以对燃料进行催化,使燃料发生无焰催化燃烧,与相关技术中的直接燃烧相比,该燃烧器30内的燃料的起燃温度较低,可以有效地抑制氮氧化物的产生,同时使燃料的催化燃烧比较完全,降低烟气中的一氧化碳的含量。In other embodiments of the invention, a catalyst carrier is disposed within the combustor 30 and the catalyst is coated on the surface of the catalyst support. Preferably, the catalyst support is a honeycomb ceramic. High temperature resistance of 1200 ° C, to ensure the reliability of the catalyst in the burner 30, thereby extending the service life. When a mixed gas of air and gas enters the combustor 30, the catalyst on the catalyst carrier can catalyze the fuel to cause flameless catalytic combustion of the fuel, and the fuel in the combustor 30 is compared with direct combustion in the related art. The lower light-off temperature can effectively inhibit the production of nitrogen oxides, and at the same time, the catalytic combustion of the fuel is relatively complete, and the content of carbon monoxide in the flue gas is reduced.
在本发明的一些具体实施例中,燃烧器30内设有温度检测器31以检测催化剂的加热温度。具体地,催化剂的加热温度为T,若T>400℃,控制器控制风机70与燃气比例阀80分别启动以向混合腔输送空气和燃气;若T>700℃,控制器控制预加热盘50停止加热。In some embodiments of the invention, a temperature detector 31 is provided within the combustor 30 to detect the heating temperature of the catalyst. Specifically, the heating temperature of the catalyst is T. If T>400° C., the controller controls the fan 70 and the gas proportional valve 80 to be respectively activated to deliver air and gas to the mixing chamber; if T>700° C., the controller controls the preheating plate 50. Stop heating.
具体地,控制器输出信号给风机70和燃气比例阀80,风机70接到信号后运行,提供空气和动力;燃气比例阀80接到信号后开启,燃气通道内设置引射区域(通常为文丘里方式),当风机70运行后,引射燃气,为燃烧提供燃气,燃气与空气进入混合腔内进行充分混合,然后预加热盘50对燃烧器30以及燃烧器30内的催化剂进行预热,由于预加热盘50预先已对催化剂进行预热,当燃气/空气的混合物进入燃烧器30内时,燃料在催化剂的作用下实现无焰催化燃烧,燃烧产生高温烟气可以与换热器40进行热量交换,将热量传递给换热器40内流动的水,使得热水器产生热水,高温烟气与换热器40经过热量交换后,温度降低,最后排除燃气热水器100外。Specifically, the controller outputs a signal to the fan 70 and the gas proportional valve 80. The fan 70 operates after receiving the signal to provide air and power; the gas proportional valve 80 is opened after receiving the signal, and the ejector area is set in the gas passage (usually Wenqiu) In the mode), when the fan 70 is operated, the gas is exhausted to provide gas for combustion, the gas and the air enter the mixing chamber for thorough mixing, and then the preheating plate 50 preheats the catalyst in the burner 30 and the burner 30, Since the preheating tray 50 has previously preheated the catalyst, when the gas/air mixture enters the combustor 30, the fuel achieves flameless catalytic combustion under the action of the catalyst, and combustion to generate high temperature flue gas can be performed with the heat exchanger 40. The heat exchange transfers heat to the water flowing in the heat exchanger 40, so that the water heater generates hot water, and after the high temperature flue gas and the heat exchanger 40 are exchanged for heat, the temperature is lowered, and finally the gas water heater 100 is excluded.
这里需要说明的是,由于燃料在燃烧器30内发生无焰催化燃烧,该催化燃烧是自持式反应,只要当温度达到700℃以上,且有燃气/空气供给,催化燃烧就能持续进行。It should be noted here that since the fuel undergoes flameless catalytic combustion in the burner 30, the catalytic combustion is a self-sustaining reaction, and the catalytic combustion can be continued as long as the temperature reaches 700 ° C or higher and there is a gas/air supply.
由此,该燃气热水器100内的燃料进行无焰催化燃烧,燃烧缓和,可以大大地降低燃烧噪音,同时燃烧过程安全性更高,再者,燃烧器30内的催化剂可以降低维持燃烧反应所需要的反应温度,节省燃烧反应本身对燃料燃烧能量的消耗,实现一氧化碳和氮氧化物的低排放,节能环保。Thereby, the fuel in the gas water heater 100 is subjected to flameless catalytic combustion, the combustion is moderated, the combustion noise can be greatly reduced, and the combustion process is safer. Further, the catalyst in the burner 30 can reduce the need for maintaining the combustion reaction. The reaction temperature saves the combustion reaction itself from the consumption of fuel combustion energy, achieves low emission of carbon monoxide and nitrogen oxides, and is energy-saving and environmentally friendly.
有利地,根据本发明的一个实施例,混合腔内设有扰流片或者阻尼件(未示出),以将空气与燃气充分混合。具体地,燃气热水器100的燃烧器30在工作前,系统需要将空气与 燃气在混合腔内进行全部预混,当风机70以及燃气比例阀80分别向混合腔输入空气和燃气时,混合腔内的扰流片和阻尼件可以打乱空气以及燃气的流向,从而使空气与燃气充分均匀地混合,保证燃料的无焰催化燃烧。Advantageously, in accordance with an embodiment of the present invention, a spoiler or damper (not shown) is provided within the mixing chamber to adequately mix the air with the gas. Specifically, before the burner 30 of the gas water heater 100 is in operation, the system needs to The gas is fully premixed in the mixing chamber. When the fan 70 and the gas proportional valve 80 respectively input air and gas into the mixing chamber, the spoiler and the damper in the mixing chamber can disrupt the flow of air and gas, thereby making the air Fully and evenly mixed with the gas to ensure flameless catalytic combustion of the fuel.
另外,根据本发明的一个实施例,燃气热水器100还包括集烟罩90,集烟罩90与换热器40相连且与排气口12导通,集烟罩90用于收集和排放与燃烧器30燃烧产生的烟气,最后将烟气排向室外。参照图1,在本实施例中,集烟罩90设在换热器40的下方,换热器40具有进烟口和出烟口,换热器40的进烟口与燃烧器30连通,换热器40的出烟口与集烟罩90连通,燃烧器30内的燃料进行无焰催化燃烧产生的高温烟气通过进烟口进入换热器40内,高温烟气与换热器40内的流动的水进行换热后、从出烟口排到集烟罩90内,最后通过集烟罩90上的排烟管排出外界。In addition, according to an embodiment of the present invention, the gas water heater 100 further includes a hood 90, the hood 90 is connected to the heat exchanger 40 and is connected to the exhaust port 12, and the hood 90 is used for collecting, discharging and burning. The burner 30 burns the generated flue gas and finally discharges the flue gas to the outside. Referring to FIG. 1, in the present embodiment, the hood 90 is disposed under the heat exchanger 40, the heat exchanger 40 has a smoke inlet and a smoke outlet, and the inlet of the heat exchanger 40 is connected to the burner 30. The outlet of the heat exchanger 40 is connected to the hood 90, and the high-temperature flue gas generated by the flameless catalytic combustion of the fuel in the burner 30 enters the heat exchanger 40 through the inlet, and the high-temperature flue gas and the heat exchanger 40 The flowing water inside is discharged to the hood 90 from the vent port after the heat exchange, and finally discharged to the outside through the exhaust pipe on the hood 90.
其中,燃气热水器100还包括缓冲水罐41,缓冲水罐41设在容纳腔13内,缓冲水罐41在水流方向上位于出水口与热水出口之间且分别与出水口和热水出口连通。参照图1,缓冲水罐41设在壳体10的容纳腔13内且位于换热器40的上方,换热器40内的冷水经过换热后、进入缓冲水罐41内进行压力释放,随着换热过程的进行,缓冲水罐41内的热水逐渐增加,若用户需要热水时,可以将阀门打开,取用热水,从而为用户提供足量的生活用水。壳体10内还设有开关电磁阀/电动三通阀和冷凝水盒91,开关电磁阀/电动三通阀可以实现水路的切换,冷凝水盒91可以收集系统换热产生的冷凝水,最后排除燃气热水器100外。The gas water heater 100 further includes a buffer water tank 41. The buffer water tank 41 is disposed in the accommodating chamber 13, and the buffer water tank 41 is located between the water outlet and the hot water outlet in the water flow direction and is respectively connected with the water outlet and the hot water outlet. . Referring to Fig. 1, a buffer water tank 41 is disposed in the accommodating chamber 13 of the casing 10 and above the heat exchanger 40. The cold water in the heat exchanger 40 is subjected to heat exchange and enters the buffer water tank 41 for pressure release. During the heat exchange process, the hot water in the buffer water tank 41 is gradually increased. If the user needs hot water, the valve can be opened and the hot water can be taken, thereby providing the user with a sufficient amount of domestic water. The casing 10 is further provided with a switch solenoid valve/electric three-way valve and a condensate water tank 91. The switch solenoid valve/electric three-way valve can realize the switching of the waterway, and the condensate water tank 91 can collect the condensed water generated by the heat exchange of the system, and finally Exclude the gas water heater 100.
在本发明的一些具体实施例中,换热器40包括第一换热器40a和第二换热器40b,第一换热器40a设在第二换热器40b的上方且位于燃烧器30与第二换热器40b之间。燃烧器30内的燃料进行无焰催化燃烧后产生的高温烟气可以分别进入第一换热器40和第二换热器40内,然后分别与第一换热器40a和第二换热器40b内的水管内的冷水进行换热,使得第一换热器40a和第二换热器40b分别产生热水以供用户使用,通过在壳体10内设置两个换热器40,可以提高燃气热水器100的加热效率,保证用户可以实时地用水需求,用户体验更好。In some embodiments of the invention, the heat exchanger 40 includes a first heat exchanger 40a and a second heat exchanger 40b, the first heat exchanger 40a being disposed above the second heat exchanger 40b and located at the combustor 30 Between the second heat exchanger 40b. The high-temperature flue gas generated after the flame-free catalytic combustion of the fuel in the combustor 30 can enter the first heat exchanger 40 and the second heat exchanger 40, respectively, and then with the first heat exchanger 40a and the second heat exchanger, respectively. The cold water in the water pipe in 40b performs heat exchange, so that the first heat exchanger 40a and the second heat exchanger 40b respectively generate hot water for the user to use, and by providing two heat exchangers 40 in the casing 10, the heat can be improved. The heating efficiency of the gas water heater 100 ensures that the user can have water demand in real time, and the user experience is better.
根据本发明实施例的燃气热水器100的其他构成以及操作对于本领域普通技术人员而言都是已知的,这里不再详细描述。Other configurations and operations of gas water heater 100 in accordance with embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发 明的限制。In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. Must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a The limits of the Ming.
此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.
在本发明中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接或彼此可通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.
尽管上面已经示出和描述了本发明的实施例,可以理解的是,上述实施例是示例性的,不能理解为对本发明的限制,本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。 Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims (14)

  1. 一种燃气热水器,其特征在于,包括:A gas water heater characterized by comprising:
    壳体,所述壳体内限定有容纳腔,所述壳体具有排气口、热水出口和冷水进口;a housing defining a receiving chamber therein, the housing having an exhaust port, a hot water outlet, and a cold water inlet;
    预混合腔体壳,所述预混合腔体壳设在所述容纳腔内,所述预混合腔体壳内限定有混合腔;Pre-mixing a cavity shell, the pre-mixing cavity shell is disposed in the receiving cavity, and a pre-mixing cavity body defines a mixing cavity therein;
    燃烧器,所述燃烧器设在所述混合腔的下方,所述燃烧器与所述混合腔导通,所述燃烧器内设有催化所述燃烧器进行无烟催化燃烧的催化剂;a burner, the burner is disposed below the mixing chamber, the burner is electrically connected to the mixing chamber, and a catalyst for catalyzing the smokeless catalytic combustion of the burner is disposed in the burner;
    换热器,所述换热器设在所述燃烧器的下方且与所述燃烧器相连以吸收所述燃烧器燃烧产生的热量,所述换热器具有进水口和出水口,所述进水口与所述冷水进口导通,所述出水口与所述热水出口导通;a heat exchanger, the heat exchanger being disposed below the burner and connected to the burner to absorb heat generated by combustion of the burner, the heat exchanger having a water inlet and a water outlet, the inlet The water inlet is electrically connected to the cold water inlet, and the water outlet is electrically connected to the hot water outlet;
    预加热盘,所述预加热盘与所述燃烧器相连以对所述燃烧器进行预加热;Preheating a tray, the preheating tray being coupled to the burner to preheat the burner;
    控制器,所述控制器与所述预加热盘相连以控制所述预加热盘的加热温度。And a controller coupled to the preheating tray to control a heating temperature of the preheating tray.
  2. 根据权利要求1所述的燃气热水器,其特征在于,还包括风机和燃气比例阀,所述风机和所述燃气比例阀分别与所述控制器相连,所述风机设在所述混合腔的上方以向所述混合腔输送空气,所述燃气比例阀与所述燃烧器相连以向所述混合腔输送所述燃气。The gas water heater according to claim 1, further comprising a fan and a gas proportional valve, wherein the fan and the gas proportional valve are respectively connected to the controller, and the fan is disposed above the mixing chamber To deliver air to the mixing chamber, the gas proportional valve is coupled to the burner to deliver the gas to the mixing chamber.
  3. 根据权利要求1或2所述的燃气热水器,其特征在于,所述预加热盘对所述燃烧器的预加热温度控制在300℃-400℃。The gas water heater according to claim 1 or 2, characterized in that the preheating temperature of the preheating tray to the burner is controlled at 300 °C - 400 °C.
  4. 根据权利要求1-3中任一项所述的燃气热水器,其特征在于,所述预加热盘采用电加热方式进行加热。The gas water heater according to any one of claims 1 to 3, wherein the preheating tray is heated by electric heating.
  5. 根据权利要求1-4中任一项所述的燃气热水器,其特征在于,所述催化剂为贵金属材料件或者非金属材料件。The gas water heater according to any one of claims 1 to 4, wherein the catalyst is a precious metal material member or a non-metal material member.
  6. 根据权利要求5所述的燃气热水器,其特征在于,所述催化剂涂覆在所述燃烧器的内壁面上。A gas water heater according to claim 5, wherein said catalyst is coated on an inner wall surface of said burner.
  7. 根据权利要求5所述的燃气热水器,其特征在于,所述燃烧器内设有催化剂载体,所述催化剂涂覆在所述催化剂载体的表面。A gas water heater according to claim 5, wherein a catalyst carrier is disposed in said burner, said catalyst being coated on a surface of said catalyst carrier.
  8. 根据权利要求7所述的燃气热水器,其特征在于,所述催化剂载体为蜂窝陶瓷。The gas water heater according to claim 7, wherein said catalyst carrier is a honeycomb ceramic.
  9. 根据权利要求2所述的燃气热水器,其特征在于,所述燃烧器内设有温度检测器以检测所述催化剂的加热温度。The gas water heater according to claim 2, wherein a temperature detector is provided in said burner to detect a heating temperature of said catalyst.
  10. 根据权利要求9所述的燃气热水器,其特征在于,所述催化剂的加热温度为T,若T>400℃,所述控制器控制所述风机与所述燃气比例阀分别启动以向所述混合腔输送所述空气和所述燃气;若T>700℃,所述控制器控制所述预加热盘停止加热。The gas water heater according to claim 9, wherein the heating temperature of the catalyst is T, and if T > 400 ° C, the controller controls the fan and the gas proportional valve to be respectively activated to the mixing The chamber delivers the air and the gas; if T > 700 ° C, the controller controls the preheating tray to stop heating.
  11. 根据权利要求1-10中任一项所述的燃气热水器,其特征在于,所述混合腔内设有 扰流片或者阻尼件,以将所述空气与所述燃气充分混合。The gas water heater according to any one of claims 1 to 10, wherein the mixing chamber is provided A spoiler or a damping member to thoroughly mix the air with the gas.
  12. 根据权利要求1-11中任一项所述的燃气热水器,其特征在于,还包括集烟罩,所述集烟罩与所述换热器相连且与所述排气口导通,所述集烟罩用于收集和排放与所述燃烧器燃烧产生的烟气。The gas water heater according to any one of claims 1 to 11, further comprising a hood, the hood being connected to the heat exchanger and electrically connected to the exhaust port, A hood is used to collect and discharge the fumes generated by combustion with the burner.
  13. 根据权利要求1-12中任一项所述的燃气热水器,其特征在于,还包括缓冲水罐,所述缓冲水罐设在所述容纳腔内,所述缓冲水罐在水流方向上位于所述出水口与所述热水出口之间且分别与所述出水口和所述热水出口连通。The gas water heater according to any one of claims 1 to 12, further comprising a buffer water tank, wherein the buffer water tank is disposed in the accommodating chamber, and the buffer water tank is located in a water flow direction Between the outlet and the hot water outlet, and communicating with the water outlet and the hot water outlet, respectively.
  14. 根据权利要求1-13中任一项所述的燃气热水器,其特征在于,所述换热器包括第一换热器和第二换热器,所述第一换热器设在所述第二换热器的上方且位于所述燃烧器与所述第二换热器之间。 The gas water heater according to any one of claims 1 to 13, wherein the heat exchanger comprises a first heat exchanger and a second heat exchanger, and the first heat exchanger is provided in the first Above the two heat exchangers and between the burner and the second heat exchanger.
PCT/CN2016/091931 2016-05-13 2016-07-27 Gas water heater WO2017193479A1 (en)

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CN105258323A (en) * 2015-11-10 2016-01-20 广东万家乐燃气具有限公司 Gas water heater based on catalytic combustion

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