CN114992634A

CN114992634A - Multi-connected combustion machine and gas water heater

Info

Publication number: CN114992634A
Application number: CN202110199857.0A
Authority: CN
Inventors: 钱晓林; 梁泽锋; 李鑫; 曲绍鹤; 陆祖安
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2022-09-02

Abstract

The invention discloses a multi-connected burner and a gas water heater, wherein the multi-connected burner comprises a premixer and a plurality of burners, wherein the premixer is used for accessing gas and air and premixing; the combustor is provided with a combustion chamber; the combustor of at least one multi-connected combustor is used for receiving mixed gas provided by the pre-mixer and igniting the mixed gas for combustion. In the invention, the premixer pre-mixes the fuel gas and the air to form mixed gas; the plurality of combustors are connected with the pre-mixer to realize the parallel connection of the plurality of combustors; the premixer can provide mixed gas required by combustion for each combustor, and different combustion powers of the multi-connected combustor can be enabled by selecting the required number of combustors to work synchronously, so that different heat loads are obtained, and different heat exchange effects are generated.

Description

Multi-connected combustion machine and gas water heater

Technical Field

The invention relates to the technical field of water heater combustion, in particular to a multi-connected combustion machine and a gas water heater.

Background

The existing gas water heater is generally provided with a burner, and the purpose of heat exchange of tap water is realized by generating heat through combustion of the burner. However, the combustion power of the existing gas water heater is generally single and fixed, so that the application of the gas water heater is limited.

Disclosure of Invention

The invention mainly aims to provide a multi-connected combustion machine and a gas water heater, and aims to solve the problem of single combustion power of the traditional gas water heater.

In order to achieve the above object, the present invention provides a multiple combustion unit for a gas water heater, the multiple combustion unit comprising:

the premixer is used for accessing fuel gas and air and premixing; and the number of the first and second groups,

a plurality of burners formed with a combustion chamber;

the combustor comprises a plurality of combustors, a plurality of multi-connected combustors, a plurality of pre-mixers and a plurality of multi-connected combustors, wherein the combustors of the combustors are respectively communicated with the pre-mixers, and at least one combustor of the multi-connected combustor is used for receiving mixed gas provided by the pre-mixers and igniting the mixed gas for combustion.

In one embodiment, at least one of the burners comprises:

the combustion chamber comprises a first combustion chamber and a second combustion chamber which are sequentially communicated, and the first combustion chamber is used for accessing the mixed gas provided by the premixer;

the preheating burner is used for igniting the mixed gas in the first combustion chamber and heating the temperature in the first combustion chamber to a preset temperature; and the number of the first and second groups,

and the injector is used for injecting fuel gas and/or air into the second combustion chamber so as to enable the second combustion chamber to carry out high-temperature air combustion reaction.

In an embodiment, the multiple combustion engine further includes a plurality of adjusting valves corresponding to the plurality of burners one to one, and each adjusting valve is disposed on a connecting pipeline between the premixer and the corresponding combustion chamber to adjust the intake amount of the mixed gas in the corresponding combustion chamber.

In one embodiment, the multi-split combustion engine further includes:

the input device is used for inputting the power demand value of the multi-connected combustion machine; and the number of the first and second groups,

and the controller is electrically connected with the input device and the regulating valves respectively so as to control at least one regulating valve to work according to the power demand value.

In one embodiment, the input device includes:

the water flow sensor is used for sensing the water inflow of the gas water heater; and the number of the first and second groups,

the first temperature sensor is used for detecting the water inlet temperature of the gas water heater;

the controller is electrically connected with the water flow sensor and the temperature detection assembly respectively so as to obtain the power demand value according to the water flow sensor, the inlet water temperature and the received user set temperature.

In one embodiment, the input device further comprises a second temperature sensor for sensing the actual outlet water temperature of the gas water heater;

the controller is electrically connected with the second temperature sensor to control the regulating valve to work according to a deviation value between the actual outlet water temperature and the temperature set by the user.

In one embodiment, the multi-connected combustion machine further comprises an inductor, and the inductor is used for triggering a water use signal when sensing that the gas water heater uses water;

the controller is electrically connected with the sensor so as to control the input device to work when the water use signal is received.

In one embodiment, the sensor is a water flow sensor.

In one embodiment, a plurality of the burners are arranged side by side at intervals;

the premixer is respectively communicated with the combustion chambers of the plurality of combustors through a pipeline.

In one embodiment, the premixer comprises a casing and a fan, the casing is provided with a gas passage, an air passage and a mixing passage, an air inlet of the mixing passage is respectively communicated with the gas passage and the air passage, and an air outlet of the mixing passage is respectively communicated with the plurality of combustion chambers;

the fan is arranged in the mixing channel.

In an embodiment, the premixer further comprises a gas proportional valve, and the gas proportional valve is arranged in the gas passage and used for adjusting the gas inlet amount of the gas passage.

In one embodiment, the multiple combustion engine further includes:

the input device is used for inputting the power demand value of the multi-connected combustion machine; and (c) a second step of,

and the controller is electrically connected with the input device, the gas proportional valve and the fan respectively so as to control the gas proportional valve and the fan to work according to the power demand value.

In one embodiment, the premixer is provided in plurality, and each premixer is communicated with the combustion chamber of a plurality of combustors respectively.

In addition, in order to achieve the above object, the present invention further provides a gas water heater, which includes a main body, a heat exchanger and a multiple combustion unit, wherein a heat exchange chamber is disposed in the main body, the heat exchanger is disposed in the heat exchange chamber, a flue gas outlet of the multiple combustion unit is communicated with the heat exchange chamber, and the multiple combustion unit includes:

a plurality of burners formed with a combustion chamber;

In the technical scheme provided by the invention, the premixer is used for premixing fuel gas and air to form mixed gas; the plurality of combustors are connected with the premixer to realize the parallel connection of the plurality of combustors; the premixer can provide mixed gas required by combustion for each combustor, and different combustion powers of the multi-connected combustor can be enabled by selecting the required number of combustors to work synchronously, so that different heat loads are obtained, and different heat exchange effects are generated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a multi-split combustion engine provided by the invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a longitudinal sectional view of a part of the structure of the burner of FIG. 2;

fig. 4 is an enlarged schematic view of a portion B in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name(s)
				1	Multi-connected combustion machine	220	Preheating burner
100	Premixing apparatus	230	Ejector
				110	Casing (CN)	300	Regulating valve
111	Gas burnerRoad	410	Water flow sensor
				112	Air channel	420	First temperature sensor
113	Mixing channel	430	Second temperature sensor
				120	Fan blower	440	Inductor
130	Gas proportional valve	500	Pipe line
				200	Burner with a burner head	510	Connecting pipeline
210	Shell body	2	Water inlet pipe
				211	First combustion chamber	3	Water outlet pipe
212	Second combustion chamber	4	Exhaust pipe

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a multi-connected burner which is applied to gas water heaters, related products and equipment such as gas wall-mounted furnaces and the like which use high-temperature hot water generated by gas combustion to carry out household bathing, heating and the like, and is convenient to understand below, taking the application to the gas water heaters as an example. Fig. 1 to 4 illustrate an embodiment of a multi-connected combustor according to the present invention.

Referring to fig. 1 to 4, the multi-connected combustor 1 provided by the invention comprises a premixer 100 and a plurality of combustors 200, wherein the premixer 100 is used for receiving gas and air and premixing; the burner 200 is formed with a combustion chamber; the combustion chambers of the plurality of combustors 200 are respectively communicated with the premixer 100, and at least one combustion chamber of the multi-split burner 1 is used for receiving the mixed gas provided by the premixer 100 and igniting the mixed gas for combustion.

In the technical scheme provided by the invention, a premixer 100 is used for premixing fuel gas and air to form mixed gas; the plurality of combustors 200 are connected with the pre-mixer 100, so that the plurality of combustors 200 are connected in parallel; the premixer 100 can provide mixed gas required by combustion for each combustor 200, and can enable different combustion powers of the multi-split combustor 1 to be achieved by selecting a required number of combustors 200 to work synchronously, so that different heat loads are obtained, and different heat exchange effects are generated.

It is understood that the premixer 100 generally includes a casing 110, the casing 110 is formed with a gas passage 111, an air passage 112, and a mixing passage 113, an air inlet of the mixing passage 113 is communicated with the gas passage 111 and the air passage 112, respectively, and an air outlet of the mixing passage 113 is communicated with the plurality of combustion chambers, respectively. The gas passage 111 is used for receiving external gas, the air passage 112 is used for receiving external air, and the received gas and air are mixed in the mixing passage 113.

The ratio of the fuel gas to the air in the mixed gas premixed by the premixer 100 is set within an appropriate range, thereby ensuring that the burner 200 can be sufficiently and efficiently combusted in the mixed gas environment.

Based on this, in a further scheme, the premixer 100 may be provided with a proportional valve at the gas passage 111 and/or the air passage 112, and for distinction, it may be defined that the proportional valve provided at the gas passage 111 is the gas proportional valve 130, and the proportional valve provided at the air passage 112 is the air proportional valve; by operating the gas proportional valve 130 and/or the air proportional valve, the gas intake amount and/or the air intake amount in the premixer 100 can be adjusted, so that a mixture gas of a desired ratio can be obtained. In the present embodiment, a gas proportional valve 130 is disposed at the gas passage 111, and the gas intake amount can be correspondingly adjusted by adjusting the opening degree of the gas proportional valve 130.

Furthermore, the premixer 100 may be further provided with a fan 120, and the fan 120 may be capable of driving the flow of the gas and/or air in the premixer 100 such that the gas flow enters each combustion chamber substantially in a desired direction and at a desired speed. In a specific application, the fan 120 may be disposed at the air channel 112 to accelerate the circulation of air, and cooperate with the gas proportional valve 130 to realize the respective control of the air intake amount and the gas intake amount; alternatively, the fan 120 may be disposed at the mixing channel 113, which not only can drive the circulation of the gas, air and mixed gas, but also the gas and air can be dispersed to obtain more sufficient mixing under the disturbance of the rotating blades of the fan 120.

The premixer 100 and the plurality of combustors 200 are generally communicated through a duct 500, specifically, an air inlet of the duct 500 is communicated with an outlet of the mixing passage 113 of the premixer 100, and a plurality of air outlets of the duct 500 are provided and respectively communicated with air inlets of the plurality of combustion chambers. The arrangement of the duct 500 helps to smooth the flow rate of the mixed gas and to uniformly distribute the mixed gas output from the premixer 100 to the plurality of burners 200.

The number of the premixers 100 is not limited in the present design, and may be one or more according to actual needs. Wherein, when the premixer 100 is provided in plurality, each premixer 100 in the plurality of premixers 100 is provided in communication with the plurality of burners 200, that is, such that the plurality of burners 200 are connected in parallel at the mixed gas outlet of each premixer 100. The provision of the plurality of premixers 100 can increase the amount of premixed gas, so that sufficient premixed gas can be supplied to the plurality of combustors 200 when the plurality of combustors 200 are simultaneously operated.

The burner 200 is used for receiving the mixed gas provided by the pre-mixer 100, igniting the mixed gas, and enabling the mixed gas to be stably combusted in a combustion chamber of the burner 200, so that high-temperature flue gas is obtained. The combustion chamber is generally provided with a mixed gas inlet and a flue gas outlet, and the mixed gas inlet and the flue gas outlet can be arranged at any position of the combustion chamber, for example, at two opposite sides of the combustion chamber, or at a certain side surface of the combustion chamber at intervals. The flue gas outlet is used for being communicated with a heat exchange chamber of the gas water heater, so that high-temperature flue gas generated by the combustion chamber can exchange heat with tap water, and hot water is finally prepared.

It should be noted that, the design is not limited to that all the plurality of burners 200 must be turned on during each operation of the gas water heater, and at least one burner 200 in the plurality of burners 200 may be selected to be turned on according to actual needs.

In addition, each burner 200 generally has a rated power or a maximum power meeting its specification, and the specifications of the plurality of burners 200 may be all set to be the same or at least partially different according to different application requirements, so that a more diverse and energy-saving power scheme can be formed among the plurality of burners 200.

The plurality of burners 200 may be arranged in any suitable manner on the multi-split combustor 1 to be adapted to different shapes, sizes and installation orientations of the multi-split combustor 1. In one embodiment, a plurality of burners 200 are arranged in a linear side-by-side spaced arrangement. With such an arrangement, the above-mentioned pipe 500 can be arranged more simply and conveniently, and can be directly arranged in an extending manner along the arrangement direction of the plurality of combustion chambers.

The burner 200 may be a burner 200 for conventional combustion, which is not described in detail herein; alternatively, at least one of the burners 200 is provided as a burner capable of high-temperature air combustion among the plurality of burners 200. It can be understood that the main characteristics of high-temperature air combustion are: the chemical reactions need to occur in a high temperature, low oxygen environment, with the reactants at a temperature above their auto-ignition temperature and the maximum temperature rise during combustion below their auto-ignition temperature, with the oxygen volume fraction being diluted to a very low concentration by the combustion products. Compared with conventional combustion, in the combustion state, the pyrolysis of fuel is inhibited, the flame thickness is thickened, and the flame front surface disappears, so that the temperature of the whole hearth is uniform, the combustion peak temperature is low, the noise is low, and the emission of pollutants NOx and CO is greatly reduced. However, achieving high temperature air combustion requires certain conditions: the oxygen concentration in most areas in the furnace is required to be ensured to be lower than a certain value, generally lower than 5% -10%, the gas is ensured to be fully combusted and uniformly combusted, the temperature is higher than the self-ignition point of the fuel, and the self-ignition is maintained.

Specifically, the combustor 200 for realizing high-temperature air combustion includes a housing 210, a preheating combustor 220 and an injector 230, wherein the housing 210 is formed with the combustion chamber, the combustion chamber includes a first combustion chamber 211 and a second combustion chamber 212 which are sequentially communicated, and the first combustion chamber 211 is used for receiving the mixed gas provided by the premixer 100; the preheating burner 220 is configured to ignite the mixed gas in the first combustion chamber 211, and heat the temperature in the first combustion chamber 211 to a preset temperature; the injector 230 is used for injecting fuel gas and/or air into the second combustion chamber 212, so that a high-temperature air combustion reaction is performed in the second combustion chamber 212.

The first combustion chamber 211 is sequentially communicated with the second combustion chamber 212, so that the airflow formed by gas and/or air and the high-temperature flue gas can circulate between the first combustion chamber 211 and the second combustion chamber 212. Specifically, the mixed gas inlet of the combustion chamber is arranged at the first combustion chamber 211, and is optionally arranged at the side of the first combustion chamber 211 far away from the second combustion chamber 212, so that the first combustion chamber 211 can access the mixed gas provided by the premixed gas; the flue gas outlet of the combustion chamber is arranged at the second combustion chamber 212, and optionally at the side of the second combustion chamber 212 far away from the first combustion chamber 211, so that the second combustion chamber 212 can generate high-temperature flue gas after sufficient air combustion, and the high-temperature flue gas is discharged through the flue gas outlet.

The first combustion chamber 211 and the second combustion chamber 212 may be formed on the same housing 210, or may be formed on different housings 210, and the first combustion chamber 211 and the second combustion chamber 212 may be communicated by detachably connecting the different housings 210.

The preheating burner 220 is disposed in the first combustion chamber 211, and may be specifically disposed at a mixed gas inlet of the first combustion chamber 211; the preheating burner 220 ignites the mixed gas in the first combustion chamber 211, so that the mixed gas is combusted, and a preset high temperature is formed in the region, so that high-temperature preheating can be realized, and high-temperature flue gas is formed.

The injector 230 injects fuel gas and/or air into the second combustion chamber 212, the fuel gas is ignited by the high temperature gas and continuously burns in the second combustion chamber 212, so as to form an injection combustion region, and the fuel gas and/or air injected according to a preset speed is matched with the high temperature flue gas, so as to form an entrainment effect in the second combustion chamber 212, so as to form a flue gas recirculation region, so that part of the high temperature flue gas (the flue gas rich in N2 and CO 2) circulates and dilutes the reactant inside the second combustion chamber 212, and then the injected fuel gas and air are sufficiently diluted to form a lower oxygen concentration, so as to reduce the combustion reaction speed, and continuously maintain a higher temperature in the second combustion chamber 212, so as to ensure that the temperature in the second combustion chamber 212 is higher than the auto-ignition point of the fuel, so as to achieve auto-ignition, thereby achieving high temperature air combustion.

Preheat air and cooperate high-speed efflux to realize the entrainment high temperature flue gas and dilute through high temperature, not only can make the gas obtain abundant burning, reduced the emission of pollutant, make the burning in the second combustion chamber 212 more even moreover, the problem of local combustion too vigorous and noise production can not appear.

It can be known from the above that the target temperature of the high-temperature preheated air cannot be too low, and cannot be lower than 600 ℃, and generally controlled at 600 to 1200 ℃, so that when the high-temperature gas contacts with the airflow ejected from the injector 230, better automatic combustion is realized, and ignition are no longer needed. The scheme for implementing high-temperature preheating of air can be various, for example, it can be implemented by controlling the heating time, controlling the ratio of fuel gas to air, performing heat preservation, increasing the residence time of high-temperature gas in the second combustion chamber 212, and the like.

The injectors 230 may be disposed on a sidewall of the second combustion chamber 212, and a plurality of the injectors 230 may be spaced along a circumferential direction of the second combustion chamber 212, and a plurality of the injectors 230 may be uniformly disposed along each sidewall of the second combustion chamber 212 or may be concentrated on two opposite sidewalls of the second combustion chamber 212. The injection direction of the injector 230 is not limited, and may be injection toward any horizontal direction, or injection inclined slightly toward the preheating burner 220.

Further, in an embodiment, the multi-split combustion engine 1 further includes a plurality of adjusting valves 300 corresponding to the plurality of combustors 200, and each adjusting valve 300 is disposed on a connecting pipe 510 between the premixer 100 and the corresponding combustion chamber for adjusting the intake amount of the mixture gas of the corresponding combustion chamber. The regulating valve 300 can regulate the opening and closing of the corresponding connecting pipeline 510 and the circulation of the mixed gas at any opening degree, so that the regulation of the mixed gas intake amount of the corresponding combustion chamber can be realized, and the mixed gas intake amount of each combustion chamber can be respectively regulated and controlled.

Based on the above, in an embodiment, the multi-connected combustor 1 further includes a sensing device and a controller, wherein the sensing device is used for sensing the power demand value of the multi-connected combustor 1; the controller is electrically connected to the sensing device and the plurality of regulating valves 300, respectively, to control at least one of the regulating valves 300 to operate according to the power demand, so that at least one of the combustors 200 operates to meet the power demand.

The specific scheme of the sensing device is not limited, and in an embodiment, the sensing device may be an input device, and the input device may be, but is not limited to, various buttons, a touch screen, a microphone, and the like, that is, a user may manually press, touch a display control structure of the gas water heater, or directly send out a power demand value required by voice input. When the sensing device is an input device, the user is not limited to input only the power value, and according to different application situations, the user may input any parameter that can be finally converted into the power value, for example, a temperature value, an application environment, a current season and a current region, and the like.

Of course, the sensing device may also be a detection device, and specifically, in an embodiment, the sensing device includes a water flow sensor 410 and a first temperature sensor 420, wherein the water flow sensor 410 is used for sensing the water inflow of the gas water heater; the first temperature sensor 420 is used for detecting the water inlet temperature of the gas water heater; the controller is electrically connected to the water flow sensor 410 and the temperature detection module, respectively, so as to obtain the power demand value according to the water flow sensor 410, the inlet water temperature and the received user set temperature.

The user-set temperature can be directly obtained through communication connection with the control device of the gas water heater. Specifically, when the inlet water temperature and the user set temperature are known, the required temperature rise can be moved, and the product of the temperature rise and the current water flow is converted, so that the required heat load corresponding to the required temperature rise can be obtained, and the required heat load can determine the corresponding power required value due to the known specification parameters of each combustor 200.

Further, in an embodiment, the sensing device further includes a second temperature sensor 430, and the second temperature sensor 430 is used for sensing the actual outlet water temperature of the gas water heater; the controller is electrically connected to the second temperature sensor 430 to control the operation of the regulating valve 300 according to a deviation value between the actual outlet water temperature and the user set temperature.

It can be understood that the second temperature sensor 430 can detect the actual outlet temperature value of the hot water produced by the operation of the at least one burner 200, and in general, the actual outlet temperature should be approximately the same as the temperature set by the user, and the deviation between the actual outlet temperature and the temperature set by the user does not exceed the preset deviation, and at this time, the previous setting does not need to be changed, and the regulating valve 300 is controlled to continue to operate according to the previous setting; when a large deviation occurs between the actual outlet water temperature and the user-set temperature, for example, the deviation exceeds a preset deviation, it indicates that there is a problem in the previous setting, and the working scheme of the regulating valve 300 needs to be adjusted, for example, when the actual outlet water temperature is far less than the user-set temperature, the opening degree of at least one regulating valve 300 can be properly increased to provide more mixed gas for the corresponding combustion chamber, so as to increase the combustion power of the combustor 200; on the contrary, when the actual outlet water temperature is much higher than the set temperature of the user, the opening of the at least one adjusting valve 300 can be properly reduced to provide less mixed gas for the corresponding combustion, so as to reduce the combustion power of the burner 200.

In addition, when a large deviation occurs between the actual outlet water temperature and the user-set temperature, it can also indicate that some components in the multi-split combustion engine 1, such as some regulating valve 300, some preheating burner 220, or some injector 230, are abnormal, and can be timely checked.

In order to accurately obtain whether a user needs to use water currently, that is, to determine whether the multi-connected combustor 1 needs to work currently, in an embodiment, the multi-connected combustor 1 further includes an inductor 440, where the inductor 440 is configured to trigger a water use signal when sensing that the gas water heater uses water; the controller is electrically connected to the sensor 440 to control the operation of the sensing device when the water usage signal is received.

Similarly, the sensor 440 may be an input device for the user to directly input and confirm whether water is needed; alternatively, the sensor 440 may be any sensor, such as a human body sensor 440, which can determine that the user has a water demand when sensing that the user performs a setting operation in a setting area. The setting operation of the setting region may be, but is not limited to: the water outlet is closed in a dish washing pool of a kitchen and dirty bowls are placed or clothes are removed in a bathroom.

Of course, the sensor 440 may also directly employ the water flow sensor 410 mentioned above. When the water flow sensor 410 senses that the current water flow reaches a set flow value, the current water demand is represented, the sensing and control work of the sensing device and the controller can be triggered, and the specific water flow can be detected after the water flow is stable.

It should be noted that the water flow sensor 410, the first temperature sensor 420, and the second temperature sensor 430 may be disposed in a group, or disposed in a plurality corresponding to the plurality of burners 200, so as to respectively sense the parameters of each burner 200, thereby achieving flexible sensing and control of each burner 200.

Since the plurality of burners 200 operate at different powers, different amounts of intake air of the mixture gas are required. Therefore, in an embodiment, when the multi-split combustion engine 1 includes the sensing device and the controller as described above, the controller may be configured to be electrically connected to the sensing device, the gas proportional valve 130, and the fan 120, respectively, so as to control the gas proportional valve 130 and the fan 120 to operate according to the power demand.

Specifically, for example, when the power demand is large, so that a large number of burners 200 need to be started and operated at the same time, more fuel gas and air can be premixed by adjusting the opening of the fuel gas proportional valve 130 to increase and the rotating speed of the fan 120 to increase; on the contrary, when the power demand is small, so that a few combustors 200 need to be started and operated at the same time, the premixing of the fuel gas and the air can be reduced by adjusting the opening degree of the fuel gas proportional valve 130 to be reduced and the rotating speed of the fan 120 to be reduced.

In addition, in order to achieve the above purpose, the invention further provides a gas water heater, which comprises a main body, a heat exchanger and the multi-split combustion machine 1, wherein a heat exchange chamber is arranged in the main body, the heat exchanger is arranged in the heat exchange chamber, and a flue gas outlet of the multi-split combustion machine 1 is communicated with the heat exchange chamber.

The heat exchanger is connected with an external water source, such as tap water, high-temperature flue gas entering the heat exchange chamber through the flue gas outlet of the burner 200 carries enough heat to continuously exchange heat with water in the heat exchanger, so that the temperature of the water is increased to be required, and hot water is prepared.

The gas water heater is generally provided with a control device. The control device can directly form a controller in the multi-connected combustor 1, or is electrically connected with the controller, so that signal communication between the control device and the controller is realized.

In addition, a plurality of burners 200 may communicate with the same exhaust pipe 4, the same inlet pipe 2, and the same outlet pipe 3. The first temperature sensor 420 and the water flow sensor 410 are disposed on the water inlet pipe 2, and the second temperature sensor 430 is disposed on the water outlet pipe 3.

It should be noted that, the detailed structure of the burner 200 in the gas water heater can refer to the above embodiment of the burner 200, and is not described herein again; because the burner 200 is used in the gas water heater of the present invention, the embodiment of the gas water heater of the present invention includes all technical solutions of all embodiments of the burner 200, and the achieved technical effects are also completely the same, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a many combustion machines that ally oneself with for gas heater, its characterized in that, many combustion machines include:

a plurality of burners formed with a combustion chamber;

2. The multi-split combustor as set forth in claim 1, wherein at least one of said combustors comprises:

3. A multi-split combustion machine as set forth in claim 1 or 2, further comprising a plurality of regulating valves disposed in one-to-one correspondence with the plurality of burners, each regulating valve being disposed on a connecting line between the premixer and the corresponding combustion chamber for regulating the intake amount of the mixture gas of the corresponding combustion chamber.

4. The multi-split combustion engine as set forth in claim 3, further comprising:

the input device is used for inputting the power demand value of the multi-connected combustor; and (c) a second step of,

5. The multi-split combustion engine as set forth in claim 4, wherein the input means comprises:

6. The multi-split combustion engine as claimed in claim 5, wherein the input means further comprises a second temperature sensor for sensing an actual leaving water temperature of the gas water heater;

7. The multi-split combustion machine as claimed in claim 4, further comprising a sensor for triggering a water use signal when sensing that the gas water heater uses water;

8. The multi-split combustion machine as set forth in claim 7, wherein said sensor is a water flow rate sensor.

9. The multi-split combustion engine as set forth in claim 1, wherein a plurality of said burners are arranged side by side at intervals;

10. The multi-split combustion machine as claimed in claim 1 or 2, wherein the premixer includes a casing and a blower, the casing is formed with a gas passage, an air passage and a mixing passage, an air inlet of the mixing passage is communicated with the gas passage and the air passage, respectively, and an air outlet of the mixing passage is communicated with the plurality of combustion chambers, respectively;

the fan is arranged in the mixing channel.

11. The multi-split combustion engine as set forth in claim 10, wherein the premixer further includes a gas proportional valve provided in the gas passage for adjusting the gas intake amount of the gas passage.

12. The multiple combustion engine as set forth in claim 11, further comprising:

13. The multi-connected combustor as claimed in claim 1 or 2, wherein a plurality of the premixers are provided, each of which communicates with the combustion chamber of a plurality of the combustors, respectively.

14. A gas water heater, characterized by that, including main part, heat exchanger and claim 1 to 13 any more the combustor of claim 1, be provided with the heat transfer room in the main part, the heat exchanger sets up in the heat transfer room, the flue gas outlet of the combustor of more is with the heat transfer room intercommunication.