CN114165785A

CN114165785A - Combustor and water heater

Info

Publication number: CN114165785A
Application number: CN202111682652.4A
Authority: CN
Inventors: 范威; 黄茂林; 黄侨伟; 李光华
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-03-11

Abstract

The invention discloses a burner and a water heater. The burner comprises a combustion main body and a pressure taking nozzle. The combustion main body forms a chamber for gas to pass through. The pressure taking nozzle is arranged on the combustion main body. The other end of the pressure nozzle is used for communicating with the wind pressure detection device. In the present invention, the pressure-taking nozzle is arranged on the combustion main body. Compared with the solution of directly arranging the pressure-taking nozzle in the fan, the adverse effect of the unstable wind pressure inside the fan on the pressure-taking result of the pressure-taking nozzle can be avoided. ; In addition, the chamber can be used for the airflow passage in the combustion body, which is not only beneficial to the full contact between the pressure taking nozzle and the airflow in the combustion main body, which is convenient for the pressure taking of the pressure taking nozzle, and the setting of the chamber is conducive to uniform airflow and smooth air flow. Fluctuations in air flow, thereby helping to improve the accuracy of wind pressure detection.

Description

Combustor and water heater

Technical Field

The invention belongs to the technical field of water heater detection, and particularly relates to a burner and a water heater.

Background

In order to identify the blockage of a flue, an existing gas water heater is generally provided with a wind pressure detection device to detect the wind pressure inside the water heater. However, the existing burner generally arranges the pressure taking position in the blower, and because the flow field inside the blower is not uniform, the pressure taking result of the air pressure detecting device is easy to fluctuate greatly, and the measuring accuracy is reduced.

Disclosure of Invention

The invention mainly aims to provide a burner and a water heater, and aims to solve the problem of low wind pressure measurement accuracy of the traditional water heater.

In order to achieve the above object, the present invention provides a burner for a water heater, the water heater including a wind pressure detecting device, the burner comprising:

a combustion body formed with a chamber for gas to pass through; and the number of the first and second groups,

get and press the mouth, locate the burning main part, get the one end of pressing the mouth with the cavity intercommunication, get the other end of pressing the mouth be used for with wind pressure detection device intercommunication.

Optionally, the pressure extraction nozzle is integrally provided with the combustion body.

Optionally, the combustion main body is provided with a through hole, and the pressure tapping nozzle is arranged through the through hole and mounted to the combustion main body.

Optionally, the chamber comprises a combustion chamber having an air intake end and a smoke output end;

the pressure taking nozzle is arranged at the air inlet end and/or the smoke outlet end.

Optionally, the chamber comprises an air inlet chamber and a combustion chamber which are sequentially communicated, the combustion body comprises a combustion assembly, and the combustion assembly is arranged at a communication position between the air inlet chamber and the combustion chamber;

the pressure sampling nozzle is arranged in the air inlet chamber.

Optionally, the chamber comprises a combustion chamber and a smoke collection chamber which are communicated in sequence, and the smoke collection chamber is arranged in a tapered manner in a direction away from the combustion chamber;

the pressure-taking nozzle is arranged in the smoke-collecting chamber.

Optionally, the chamber comprises a combustion chamber having a smoke outlet end;

the combustion main body comprises a smoke outlet pipe which is arranged at the smoke outlet end in an outward protruding mode, and the pressure taking nozzle is arranged on the smoke outlet pipe.

Optionally, the chamber extends in an up-down direction;

the pressure taking nozzle is arranged on the side part of the combustion main body.

Optionally, the chamber is formed with a pressure-tapping wall face, the pressure-tapping wall face being disposed downward;

the pressure measuring nozzle is arranged on the pressure measuring wall surface.

Optionally, the pressure measuring nozzle is provided with a pressure measuring hole, the pressure measuring hole is provided with a pressure measuring port located in the cavity, and the pressure measuring port is flush with the inner cavity wall of the cavity at the position of the pressure measuring port.

Optionally, the chamber is formed with a pressure tapping wall;

the pressure taking nozzle is arranged on the pressure taking wall surface in a protruding mode so as to form a pressure taking section located in the cavity.

Optionally, the pressure measuring nozzle is provided with a pressure measuring hole through, the pressure measuring hole is provided with a pressure measuring port located in the cavity, and the pressure measuring port is arranged on the side of the pressure measuring section.

Optionally, the pressure tapping section comprises a fixed section protruding from the pressure tapping wall surface and an extension section extending laterally from a free end of the fixed section;

the pressure measuring nozzle is provided with a pressure measuring hole in a penetrating mode, the pressure measuring hole is provided with a pressure measuring port located in the cavity, and the pressure measuring port is arranged at the end portion of the extending section.

Alternatively, the pressure-taking wall surface is disposed upward.

Optionally, the pressure taking nozzle is provided with a plurality of pressure taking nozzles which are dispersedly arranged on the combustion main body.

In addition, in order to achieve the above object, the present invention further provides a water heater including a wind pressure detecting device and a burner, the burner including:

Optionally, the wind pressure detecting device includes a detecting body, and the detecting body is an absolute pressure sensor or a differential pressure sensor.

Optionally, the detection body is connected with the pressure extraction nozzle through a flexible conduit.

Optionally, the water heater further comprises an outer shell, and the burner and the wind pressure detection device are accommodated in an inner cavity of the outer shell; and/or the presence of a gas in the gas,

the water heater also comprises a fan, wherein the fan is connected with the combustion main body and used for connecting air into the cavity, and the pressure taking nozzle is arranged at an interval with the fan.

According to the technical scheme provided by the invention, the pressure taking nozzle is arranged on the combustion main body, and compared with the scheme that the pressure taking nozzle is directly arranged in the fan, the adverse effect of unstable wind pressure in the fan on the pressure taking result of the pressure taking nozzle can be avoided; in addition, the cavity can supply the airflow channel in the burning main body, is not only favorable to getting the pressure mouth fully to contact with the airflow in the burning main body, and the pressure of getting of the pressure mouth is conveniently got to the benefit of, and being provided with of cavity helps even air current in addition, and the fluctuation of gentle air current to help improving the degree of accuracy that the wind pressure detected.

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 perspective view of a first embodiment of a water heater provided by the present invention;

FIG. 2 is a schematic view of a portion of the combustor of FIG. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a perspective view of a second embodiment of a water heater provided by the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 4;

FIG. 6 is a schematic perspective view of a third embodiment of a water heater provided by the present invention;

FIG. 7 is an enlarged view of the structure of FIG. 6 at C;

FIG. 8 is a schematic perspective view of a fourth embodiment of a water heater provided by the present invention;

FIG. 9 is an enlarged view of the structure of FIG. 8 at D;

FIG. 10 is a schematic perspective view of a fifth embodiment of a water heater provided by the present invention;

FIG. 11 is an enlarged view of the structure of FIG. 10 at E;

FIG. 12 is a schematic perspective view of a sixth embodiment of a water heater provided by the present invention;

FIG. 13 is an enlarged view of the structure of FIG. 12 at F;

FIG. 14 is a perspective view of a seventh embodiment of a water heater provided by the present invention;

fig. 15 is an enlarged schematic view of the structure at G in fig. 14.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Water heater	210	Detection main body
10	Burner with a burner head	220	Pressure taking nozzle
				100	Combustion body	221	Pressure tapping section
101	Chamber	221a	Fixed segment
				110	Plate body	221b	Extension section
111	Through hole	222	Pressure tapping hole
				121	Air inlet chamber	222a	Pressure tapping
122	Combustion chamber	223	Joint
				122a	Air inlet end	230	Pressure measuring port
122b	Cigarette outlet end	240	Catheter tube
				123	Smoke collecting chamber	30	Fan blower
124	Smoke outlet pipe	40	Gas component
				130	Combustion assembly	50	Control device
20	Wind pressure detection device	60	Outer casing

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.

In view of the above, the present invention provides a burner that can be applied, for example, on a water heater. Referring to fig. 1 to 15, an embodiment of a burner for a water heater according to the present invention is shown.

Referring to fig. 1 to 3, the present invention provides a water heater 1, where the water heater 1 includes a wind pressure detecting device 20 and a burner 10, the burner 10 can generate high temperature flue gas through a combustion process after receiving combustion-supporting gas such as air and/or gas, and the high temperature flue gas can be used for exchanging heat for tap water, for example, to finally achieve a purpose of adjusting water temperature. Wind pressure detection device 20 is at least including getting pressure mouth 220, wind pressure detection device 20 passes through get pressure mouth 220 for detect the pressure value of the air current of circulation in the combustor 10, and obtain according to the sensing the pressure value, according to setting for the rule, determines whether the operating condition of combustor 10 is unusual, reaches intellectual detection system's purpose.

The burner 10 includes a combustion body 100 and a pressure tap 220. The combustion body 100 is formed with a chamber 101 for the passage of gas; the pressure taking nozzle 220 is disposed on the combustion main body 100, one end of the pressure taking nozzle 220 is communicated with the chamber 101, and the other end of the pressure taking nozzle 220 is used for being communicated with the wind pressure detecting device 20.

In the technical scheme provided by the invention, the pressure taking nozzle 220 is arranged on the combustion main body 100, compared with the scheme that the pressure taking nozzle 220 is directly arranged in the fan 30, the adverse effect of unstable wind pressure in the fan 30 on the pressure taking result of the pressure taking nozzle 220 can be avoided; in addition, the chamber 101 can supply the airflow channel in the combustion main body 100, which is not only beneficial to the sufficient contact of the pressure taking nozzle 220 and the airflow in the combustion main body 100, but also beneficial to the pressure taking of the pressure taking nozzle 220, and the chamber 101 is provided with the advantages of helping the uniform airflow and the fluctuation of the gentle airflow, thereby helping to improve the accuracy of the wind pressure detection.

It is understood that the burner 10 comprises a casing forming the combustion body 100, said casing comprising a plate 110 for the pressure extraction nozzle 220, said plate 110 constituting at least one side wall of the chamber 101.

In the present design, the pressure taking position of the pressure taking nozzle 220 on the combustion body 100 is not limited:

in one embodiment, the combustion body 100 has at least a combustion chamber 122 formed therein, and the combustion chamber 122 is used to form a sufficient space for combustion.

It can be understood that the combustion chamber 122 has an inlet end 122a and an outlet end 122b, the inlet end 122a can be used for at least one of the combustion-supporting gases to enter, and after the combustion gas flows through the combustion chamber 122 and is combusted, the generated flue gas is discharged from the outlet end 122 b. The combustion body 100 may further include a combustion assembly 130, the combustion assembly 130 being disposed proximate the inlet end 122a for combustion with the flow of combustion gases therethrough.

The inlet end 122a and the outlet end 122b may be formed at any position of the combustion chamber 122, for example, in an aspect, the inlet end 122a and the outlet end 122b may be oppositely disposed at two sides of the combustion chamber 122, which helps to form a sufficiently long flow path in the limited space of the combustion chamber 122, so that the combustion-supporting gas can be more sufficiently and effectively combusted to generate a sufficiently high-temperature flue gas.

Of course, in a further aspect, when the combustion chamber 122 is disposed to extend in the up-down direction, the air inlet end 122a may be formed at the lower end of the combustion chamber 122, and the smoke outlet end 122b is correspondingly formed at the upper end of the combustion chamber 122, so that as much high-temperature smoke as possible may be automatically gathered and discharged toward the smoke outlet end 122b due to the fact that the high-temperature smoke is generally naturally circulated upward.

Based on the above, the combustion chamber 122 may constitute the chamber 101. The pressure extraction nozzle 220 may be disposed at any position of the combustion chamber 122, such as at any side of the combustion chamber 122, and/or at the air inlet end 122a and the smoke outlet end 122b of the combustion chamber 122. Since the combustion chamber 122 is mainly used for combustion, in an operating state, the temperature in the combustion chamber 122 is high, and there may be non-uniform combustion-supporting gas and/or high-temperature flue gas in a local area, which results in an unstable gas flow, so that when the pressure taking nozzle 220 is disposed in or at the side of the combustion chamber 122, the pressure taking result may be affected by the high-temperature or non-uniform gas flow to reduce the accuracy, and a corresponding compensation correction is required. Thus, in further aspects, the pressure tap 220 may be disposed proximate to the intake end 122a of the combustion chamber 122 and/or proximate to the smoke outlet end 122b of the combustion chamber 122. That is, correspondingly, the plate body 110 may at least partially constitute a side plate of the combustion chamber 122 or any end plate of the combustion chamber 122.

In addition, in an embodiment, an air inlet chamber 121 and a combustion chamber 122 sequentially communicated in an air flow direction may be formed inside the combustion body 100, the air inlet chamber 121 is used to introduce at least one combustion-supporting gas into the combustion chamber 122, and the combustion chamber 122 is used to form a sufficient space for combustion. When the combustion body 100 includes the combustion assembly 130 as described above, the combustion assembly 130 may be disposed at the intake chamber 121 and the combustion chamber 122, that is, at the outlet of the intake chamber 121 and at the intake end 122a of the combustion chamber 122.

On this basis, the combustion chamber 122 and/or the intake chamber 121 may constitute the chamber 101. The above description is referred to the case that the combustion chamber 122 constitutes the chamber 101, and details are not repeated, and the case that the intake chamber 121 constitutes the chamber 101 will be described in the following.

When the combustion gas comprises air and gas, the inlet chamber 121 may be used to access the air and/or the gas. Wherein, when the inlet chamber 121 is used to access one of the air and the gas, the other of the air and the gas may be accessed through other structures.

For example, in the present embodiment, the air inlet chamber 121 may be configured to receive external air, and specifically, the air inlet chamber 121 may be configured with a blower 30, and external air is guided by the blower 30 to automatically flow into the air inlet chamber 121 and enter the combustion chamber 122; the blower 30 may be disposed at an inlet of the intake chamber 121, at a middle portion of the intake chamber 121, or at an outlet of the intake chamber 121, without limitation.

Next, the combustion body 100 may further include a gas burning assembly 40, wherein the gas burning assembly 40 is at least formed with a gas burning pipeline, the gas burning pipeline is formed with a gas burning inlet and at least one gas burning outlet, and the gas burning outlet may be communicated with the outlet of the gas inlet chamber 121, the gas inlet end 122a of the combustion chamber 122 and/or the lower region of the combustion chamber 122 for receiving the gas burning; when the gas outlets are provided in plurality, the gas outlets may be arranged at intervals along the circumferential direction of the combustion chamber 122, and the gas outlets may be oriented to the center of the cross section, so that the gas ejected from each gas outlet flows towards the middle of the combustion chamber 122 as much as possible; or towards the combustion assembly 130, so that the gas ejected from each gas outlet can fully act on the combustion assembly 130; or inclined toward the same side in the circumferential direction of the cross section, so that the gas ejected from each gas outlet forms a vortex in the combustion chamber 122.

Of course, the gas assembly 40 may also be provided with a proportional valve at the gas pipeline, and the proportional valve is used for realizing the adjustment of the gas flow under the driving of manual operation or the control of the control device 50 of the water heater 1.

The air inlet chamber 121 may also be used to receive a mixed gas of the air and the gas, and based on this, the air inlet chamber 121 is equivalent to the mixing chamber 101 and the gas distribution chamber 101 which form the air and the gas, and can distribute the mixed gas to the combustion assembly 130 as required to meet the combustion requirement of the combustion assembly 130, which is not described in detail.

Based on the above, the pressure nozzle 220 may be disposed in the intake chamber 121, specifically, may be disposed at a side portion of the intake chamber 121, and/or may be disposed at an end of the intake chamber 121 far from the combustion chamber 122, so as to measure the wind pressure at the position. That is, correspondingly, the plate body 110 may at least partially constitute a side plate of the intake chamber 121 or a bottom end plate of the intake chamber 121. Particularly, when the plate body 110 is disposed at an end of the intake chamber 121 far from the combustion assembly 130, the influence of the combustion action of the combustion assembly 130 on the pressure taking position can be reduced.

It should be noted that, when the pressure taking nozzle 220 is disposed at the air inlet chamber 121 and the blower 30 is disposed at the inlet of the air inlet chamber 121, the pressure taking nozzle 220 may be close to the inlet of the air inlet chamber 121, but spaced from the blower 30, so as to reduce disturbance of the blower 30 to the air flow at the pressure taking position of the pressure taking nozzle 220; even though there is still fluctuation in the airflow blown by the blower 30, the airflow can be uniformly diffused and stabilized in the chamber 101 after entering the chamber 101, so that the airflow is more stable than that in the blower 30 when passing through the pressure nozzle 220.

In addition, in an embodiment, a combustion chamber 122 and a smoke collection chamber 123 sequentially communicated in an airflow direction may be formed inside the combustion main body 100, the combustion chamber 122 is configured to form a sufficient space for combustion to generate high-temperature smoke, and the smoke collection chamber 123 is configured to collect the high-temperature smoke generated by the combustion in the combustion chamber 122 for concentrated discharge or concentrated heat exchange.

Based on this, the combustion chamber 122 and/or the smoke collection chamber 123 may constitute the chamber 101. The above description is referred to the case that the combustion chamber 122 forms the chamber 101, and details are not repeated, and the case that the smoke collection chamber 123 forms the chamber 101 will be explained in the following.

The smoke collecting chamber 123 is tapered in a direction away from the combustion chamber 122. Specifically, for example, at least one side wall surface of the smoke collection chamber 123 is inclined toward the other side wall surface in a direction away from the combustion chamber 122, so that the ventilation section of the smoke collection chamber 123 is reduced or gradually reduced in the flow direction of the smoke, the purpose of collecting the gas is achieved, and the smoke is favorably discharged in a concentrated manner.

The pressure nozzle 220 may be disposed at the smoke collecting chamber 123, specifically, at a side portion of the smoke collecting chamber 123, and/or at an end of the smoke collecting chamber 123 far from the combustion chamber 122, so as to measure the wind pressure at the position. That is, correspondingly, the plate body 110 may at least partially constitute a side plate of the smoke collection chamber 123 or a top end plate of the smoke collection chamber 123.

In addition, in an embodiment, when the combustion chamber 122 has the smoke outlet 122b as described above, the combustion body 100 includes a smoke outlet pipe 124 protruding from the smoke outlet 122b, and the pressure tap 220 is disposed on the smoke outlet pipe 124 for detecting the wind pressure of the smoke flowing through the smoke outlet pipe 124. It can be understood that, since the smoke collection chamber 123 is mainly used for collecting smoke, the above-mentioned tapering arrangement may affect the flow speed of smoke, so that the pressure values obtained by the pressure obtaining nozzle 220 may not be completely the same at different positions of the smoke collection chamber 123; the smoke outlet pipe 124 is substantially straight or partially bent, and the smoke flowing through the smoke outlet pipe 124 can be kept stable at least partially compared with the smoke collection chamber 123, so that the pressure taking nozzle 220 can be selectively arranged in the smoke collection chamber 123 and/or the smoke outlet pipe 124 according to actual needs for detecting the wind pressure.

It should be noted that, when the above-mentioned at least two embodiments are combined, for example, an air inlet chamber 121, a combustion chamber 122, a smoke collecting chamber 123 and a smoke outlet pipe 124 which are sequentially communicated along an air flow direction may be formed inside the combustion body 100, at least one of the air inlet chamber 121, the combustion chamber 122, the smoke collecting chamber 123 and the smoke outlet pipe 124 may constitute the chamber 101. The chamber 101 is formed by the air inlet chamber 121, the combustion chamber 122, the smoke collecting chamber 123 and the smoke outlet pipe 124, which is not described in detail herein.

In the following embodiments, for the sake of understanding, the pressure nozzle 220 is disposed at the air inlet chamber 121.

In the above, the housing may further include a cavity shell forming the air inlet chamber 121, the combustion chamber 122 and/or the smoke collecting chamber 123, and based on this, the cavity shell of the air inlet chamber 121, the cavity shell of the combustion chamber 122, the cavity shell of the smoke collecting chamber 123 and the smoke outlet pipe 124 may be integrally disposed, or at least two adjacent cavities may be separately disposed; when at least two of the cavity shell of the intake chamber 121, the cavity shell of the combustion chamber 122, the cavity shell of the smoke collecting chamber 123 and the smoke outlet pipe 124 are separately arranged, the two components may be fixed by welding or the like, or may be fixed by at least one of screwing, snapping, adhering, or adsorbing.

The plate body 110 may be integrally provided with the rest of the housing (hereinafter, referred to as a housing section for convenience of understanding) or may be separately provided from the housing section; when the plate body 110 and the shell section are separately arranged, the connection manner between the plate body 110 and the shell section is not limited, and may be fixed by, for example, welding, or at least one of screwing, snapping, adhering, or adsorbing.

Based on any of the above embodiments, referring to fig. 1 to 5, the pressure nozzle 220 is integrally disposed with the combustion body 100. That is, the pressure nozzle 220 may be integrally formed with the plate body 110, for example, by stamping, injection molding, or the like. When the plate body 110 and the shell section are separately arranged, a part of the shell section can be opened. The plate 110 is connected to the shell segment and is mounted to the opening to form the chamber 101 together with the opening of the shell segment. Thus, by integrally arranging the plate body 110 and the pressure nozzle 220, the pressure nozzle 220 is also mounted immediately after the plate body 110 is mounted on the combustion main body 100, which helps to reduce the mounting and dismounting operations of the pressure nozzle 220, and also enables the position of the pressure nozzle 220 on the plate body 110 to be accurate and fixed.

For ease of understanding, a side wall of the plate 110 facing the chamber 101 is a pressure-taking wall:

specifically, for example, the plate body 110 may be directly subjected to, for example, press forming, so that the plate body 110 is provided with a through hole 111 extending in the thickness direction thereof; the pressure taking nozzle 220 is provided with a pressure taking hole 222, the pressure taking hole 222 is provided with a pressure taking port 222a located in the cavity 101, the through hole 111 forms the pressure taking hole 222 of the pressure taking nozzle 220, and the pressure taking port 222a is approximately flush with the cavity wall at the position, so that the air flow passing through the pressure taking nozzle 220 does not interfere with the pressure taking nozzle 220, and the air flow at the pressure taking position is ensured to be stable.

Alternatively, for example, the plate body 110 may be directly subjected to, for example, injection molding, so that the pressure extraction nozzle 220 is protrudingly disposed on the pressure extraction wall surface of the plate body 110 to form a pressure extraction section 221 in the cavity 101. As described above, the pressure nozzle 220 has a pressure measurement hole 222, and the pressure measurement hole 222 has a pressure measurement port 222a located in the chamber 101.

Of course, the plate body 110 may be provided separately from the pressure nozzle 220. Specifically, the plate body 110 is provided with the through hole 111, for example, and the pressure nozzle 220 is inserted into the through hole 111 and attached to the combustion body 100. Based on this, the pressure taking nozzle 220 can be installed in the through hole 111 through interference fit, the interference fit can be realized by setting the size of the outer wall of the pressure taking nozzle 220 and the aperture of the through hole 111, and can also be realized by setting interference protrusions on the outer wall of the pressure taking nozzle 220 and/or the inner wall of the through hole 111; of course, the pressure nozzle 220 can also be fixed in the through hole 111 by a structure such as a snap structure, an adhesive, an absorption structure, a screw, etc., and will not be described in detail.

Similarly, referring to fig. 6 to 8, the pressure-taking nozzle 220 may be configured such that the pressure-taking port 222a is substantially flush with the cavity wall at the position; alternatively, referring to fig. 9 to 15, the pressure-taking nozzle 220 may be protrudingly disposed on the pressure-taking wall surface of the plate body 110 to form a pressure-taking section 221 in the cavity 101.

In the present design, when the pressure extraction nozzle 220 is disposed at different positions on the combustion body 100, the specific structure of the pressure extraction nozzle 220 may be different:

referring to fig. 4 to 5 and 8 to 9, when the pressure-extracting nozzle 220 is configured as above, the pressure-extracting opening 222a is substantially flush with the cavity wall at the position, the plate body 110 may be further configured to face downward or sideways: for example, when the plate body 110 forms a cavity shell of the smoke collecting chamber 123 at a tapered position, at least the pressure-taking wall surface of the plate body 110 is disposed downward; when the plate body 110 forms a side portion of any one of the intake chamber 121, the combustion chamber 122, the smoke collecting chamber 123, and the smoke outlet pipe 124, at least the pressure-taking wall surface of the plate body 110 is located in a lateral direction of the chamber 101. At this time, the downward or sideward pressure-taking wall surface can avoid forming condensed water, thereby eliminating the adverse effect of the condensed water entering the pressure-taking nozzle 220 on the pressure-taking result of the pressure-taking nozzle 220.

When the pressure-taking nozzle 220 can be protrudingly disposed on the pressure-taking wall surface of the plate body 110 to form the pressure-taking section 221 in the cavity 101:

referring to fig. 10 to 11, in an embodiment, when the pressure taking section 221 is substantially in a straight tube shape, the pressure taking port 222a may be disposed at an end of a free end of the pressure taking section 221, and particularly when the pressure taking wall surface of the plate body 110 is disposed upward, the pressure taking section 221 is disposed to at least raise a height of the pressure taking port 222a, so that a height difference exists between the pressure taking port 222a and the pressure taking wall surface, and condensed water flowing on the pressure taking wall surface is prevented from entering the pressure taking hole 222 under the action of gravity.

Referring to fig. 12 to 13, in an embodiment, when the pressure measuring section 221 is substantially in a straight tube shape, the pressure measuring port 222a may also be disposed at a side portion of the pressure measuring section 221, and the pressure measuring port 222a is disposed higher than the pressure measuring wall surface. As described above, the pressure extraction port 222a located on the side of the pressure extraction stage 221 can shift the direction of the air flow from the direction of the condensed water falling, and prevent the condensed water dropping downward from entering the pressure extraction hole 222 along the same way, while achieving the purpose of raising the height of the pressure extraction port 222 a.

Referring to fig. 14 to 15, in an embodiment, the pressure-taking section 221 includes a fixed section 221a protruding from the plate body 110 and an extending section 221b extending laterally from a free end of the fixed section 221 a; the fixed section 221a is substantially in the shape of a vertically extending straight pipe, the extended section 221b is substantially in the shape of a horizontally extending straight pipe, and the joint of the two sections is in arc transition, so that the influence on the passing airflow caused by the overhigh height of the pressure taking section 221 can be avoided, and smooth guiding of the passing airflow is facilitated. The specific structure of each of the fixing section 221a and the extending section 221b is not limited, and may be set to a desired cross-sectional shape, size and material according to actual needs.

It is understood that when the pressure extraction section 221 includes the fixed section 221a and the extension section 221b, the pressure extraction port 222a may be formed at any side portion of the fixed section 221a, an end portion of a free end of the extension section 221b, and a downward side portion of the extension section 221b, and also helps to make an entering direction of the air flow at the pressure extraction port 222a staggered from a falling direction of the condensed water, so as to prevent the condensed water dropping downward from entering the pressure extraction hole 222 along with the force of the condensed water.

Furthermore, according to one or more of the above embodiments, the pressure tapping nozzle 220 may be provided in plurality on the same water heater 1.

Specifically, the pressure taking nozzle 220 may be disposed on the same plate 110 in a distributed manner, so as to detect the wind pressure at the position adjacent to the chamber 101, increase the data amount of the collected wind pressure at the same area, and contribute to improving the wind pressure detection accuracy at the area.

And/or the pressure extraction nozzle 220 may be provided in a plurality distributed at different portions of the combustion body 100. It can be understood that the plate body 110 can be set to be a plurality of, a plurality of the plate body 110 can be set up in different positions of same cavity 101, also can set up respectively in different cavity 101 departments, increases the variety that the wind pressure of combustor 10 detected to enrich the collection kind of the wind pressure of combustor 10, help improving the degree of accuracy of the holistic wind pressure testing result of combustor 10.

It should be noted that, before the water heater 1 leaves at least the combustor 10, based on the wind pressure detecting device 20, the pressure taking positions on the combustor 10 are respectively calibrated, so as to obtain pressure calibration values corresponding to the pressure taking positions; subsequently, when the assembly of the water heater 1 is completed or the actual working state is performed, the pressure is obtained at each pressure obtaining position of the water heater 1 in real time or according to a set period based on the wind pressure detecting device 20, an actual pressure value is obtained, the actual pressure value is compared with a corresponding pressure calibration value, and for example, when the magnitude relation and the difference between the actual pressure value and the corresponding pressure calibration value are preset, the judgment results such as abnormality of the current state of the water heater 1 are obtained.

In the design, the wind pressure detecting device 20 includes a detecting main body 210, and the detecting main body 210 is integrated with functional modules for wind pressure data acquisition, signal conversion and the like.

The detection main body 210 may be an absolute pressure sensor, that is, only one pressure measuring port 230 is provided in the detection main body 210, the pressure measuring port 230 is communicated with the pressure taking nozzle 220 to obtain an actual pressure value measured by the pressure taking nozzle 220, and the control device 50 compares the actual pressure value obtained by sensing by the pressure taking nozzle 220 with a predetermined pressure preset value (equivalent to the pressure calibration value).

The detection main body 210 may also be a differential pressure sensor, that is, the detection main body 210 is provided with two pressure measurement ports 230, one of the two pressure measurement ports 230 is communicated with the pressure measurement nozzle 220 to obtain a first actual pressure value inside the chamber 101, the other one of the two pressure measurement ports 230 is used for being communicated with the external environment of the chamber 101 to obtain a second actual pressure value outside the chamber 101, an actual pressure difference value between the first actual pressure value and the second actual pressure value is calculated, and the actual pressure difference value is compared with a predetermined differential pressure calibration value.

It is understood that the second actual pressure value may be specifically set as the atmospheric pressure value at that time, and correspondingly, the pressure measuring port 230 for sensing the second actual pressure value may be communicated in the external environment, for example, to the outside of the water heater 1; of course, when the water heater 1 further includes a housing 60, and the above components such as the burner 10 are all accommodated in the inner cavity of the housing 60, a measurement space is formed at least in a local region between the burner 10 and the housing 60, and the pressure measuring port 230 for sensing the second actual pressure value may be communicated with the measurement space, so as to obtain the pressure value from the measurement space.

The inspection main body 210 is fixed relative to the burner 10 and can be disposed adjacent to the pressure nozzle 220 to shorten the wiring length; in addition, the pressure taking nozzle 220 and the pressure measuring port 230 can be connected through a flexible conduit 240, and the flexible conduit 240 has certain deformability, and is adaptable to a specific installation environment between the detection main body 210 and the pressure taking nozzle 220, so that the installation and the layout of the wind pressure detection device 20 are facilitated.

Further, the pressure nozzle 220 may be provided with a connector 223 located outside the chamber 101, the connector 223 is configured to be detachably connected to the conduit 240, and the specific structure of the connector 223 may be specifically limited according to the connection manner with the conduit 240, for example, when the conduit 240 is screwed with the connector 223, a matching external thread and internal thread may be provided on the mating surface between the connector 223 and the conduit 240; for another example, when the conduit 240 is in interference fit with the connector 223, an interference protrusion may be specifically disposed on the mating surface between the connector 223 and the conduit 240, so as to enhance the interference fit between the two; are not described in detail.

In practical application, taking the detection main body 210 as a differential pressure sensor as an example:

when the water heater 1 at least the combustor 10 is produced for the first time, the combustor 10 in a normal combustion state is subjected to pressure measurement based on the wind pressure detection device 20, a first pressure calibration value and a second pressure calibration value at two pressure measurement ports 230 are obtained, a pressure difference calibration value Y0 is obtained through calculation, the pressure difference calibration value Y0 is converted into a preset electric signal, for example, the preset electric signal is converted into a frequency signal P0 and then is sent to the control device 50, and the preset electric signal is stored by the control device 50 and is used as a basic frequency of normal operation of the water heater 1.

It should be noted that the calibration operation may be performed on each combustor 10, or the calibration operation may be performed by sampling all combustors 10 in the same batch or in the same specification according to a preset rule.

When the water heater 1 is assembled or actually used at the user, based on the wind pressure detecting device 20, the first actual pressure value and the second actual pressure value of the burner 10 under the combustion state are collected, and the actual pressure difference Y is obtained by calculation, and after being converted into the frequency signal P, the actual pressure difference Y is sent to the control device 50:

it can be understood that if the current water heater 1 may have the blockage effect such as flue blockage, inward blowing, etc., the pressure value of the chamber 101 of the combustor 10, that is, the first actual pressure value, may become large; of course, when the second actual pressure value is sensed by the pressure in the measurement space in the housing 60, the second actual pressure value will also become large; the actual pressure difference Y between the first actual pressure value and the second actual pressure value increases accordingly, the frequency signal P increases so that P is greater than P0, and the control device 50 determines that the water heater 1 is currently in the blockage abnormality.

At this time, the control device 50 may control the rotation speed of the fan 30 and the opening degree of the gas proportional valve based on the current combustion demand of the water heater 1, for example, increase the rotation speed of the fan 30 to increase the air volume, relieve the blockage abnormality by introducing a large amount of air, or decrease the opening degree of the gas proportional valve to reduce the gas supply, so as to meet the thermal demand of the water heater 1.

On the contrary, if the current water heater 1 may be affected by air draft such as communication with a common flue, extension of a smoke tube, outward air draft and the like, the pressure value of the cavity 101 of the burner 10, that is, the first actual pressure value, is reduced; of course, when the second actual pressure value is sensed as the pressure of the measurement space in the housing 60, the second actual pressure value also becomes smaller; the actual pressure difference Y between the first actual pressure value and the second actual pressure value is reduced, the frequency signal P is reduced, so that P is smaller than P0, and the control device 50 determines that the current water heater 1 is in abnormal air draft.

At this time, the control device 50 can control the rotation speed of the fan 30 and the opening degree of the gas proportional valve based on the current combustion demand of the water heater 1, for example, reduce the rotation speed of the fan 30 to reduce the air volume, adjust the pressure in the chamber 101, or increase the opening degree of the gas proportional valve to increase the gas supply to meet the thermal demand of the water heater 1.

Based on the above, when the specific pressure taking positions of the pressure taking nozzle 220 on the combustion main body 100 are set to be different, the corresponding pressure calibration values and the actual pressure values measured subsequently are also different, but it can be understood that after the mapping association that the pressure calibration values and the actual pressure values of the pressure taking positions are in one-to-one correspondence is maintained, no matter the pressure taking positions are set at any positions of the combustion main body 100, the purpose of detecting the air pressure can be achieved.

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. A burner for a water heater, the water heater comprising a wind pressure detection device, wherein the burner comprises:

a combustion body forming a chamber for the passage of gas; and,

The pressure taking nozzle is arranged on the combustion main body, one end of the pressure taking nozzle is communicated with the chamber, and the other end of the pressure taking nozzle is used to communicate with the wind pressure detection device.

2 . The burner according to claim 1 , wherein the pressure taking nozzle is integrally provided with the combustion body. 3 .

3 . The burner according to claim 1 , wherein the combustion body is provided with a through hole, and the pressure-taking nozzle is penetrated through the through hole and mounted to the combustion body. 4 .

4. The burner of claim 1, wherein the chamber comprises a combustion chamber having an inlet end and a smoke outlet end;

5 . The burner of claim 1 , wherein the chamber comprises an intake chamber and a combustion chamber communicated in sequence, the combustion body comprises a combustion assembly, and the combustion assembly is disposed in the intake chamber. 6 . communication with the combustion chamber;

The pressure taking nozzle is arranged in the air inlet chamber.

6. The burner according to claim 1, wherein the chamber comprises a combustion chamber and a smoke collecting chamber communicated in sequence, and the smoke collecting chamber is arranged in a tapered manner in a direction away from the combustion chamber;

The pressure taking nozzle is arranged in the smoke collecting chamber.

7. The burner of claim 1, wherein the chamber comprises a combustion chamber having a smoke outlet;

The combustion main body includes a smoke outlet pipe protruding outward from the smoke outlet end, and the pressure taking nozzle is arranged on the smoke outlet pipe.

8. The burner of claim 1, wherein the chamber extends vertically;

The pressure taking nozzle is arranged on the side of the combustion body.

9 . The burner of claim 1 , wherein the chamber is formed with a pressure-taking wall, and the pressure-taking wall is disposed downward; 9 .

The pressure-taking nozzle is arranged on the pressure-taking wall surface.

10. The burner according to claim 8 or 9, wherein the pressure taking nozzle is provided with a pressure taking hole therethrough, the pressure taking hole has a pressure taking port located in the chamber, the pressure taking The port is flush with the lumen wall of the chamber at its location.

11. The burner of claim 1, wherein the chamber is formed with a pressure taking wall;

The pressure-taking nozzle is protruded from the pressure-taking wall surface to form a pressure-taking section located in the chamber.

12 . The burner according to claim 11 , wherein the pressure-taking nozzle is provided with a pressure-taking hole therethrough, and the pressure-taking hole has a pressure-taking port located in the chamber, and the pressure-taking port is provided with 12 . on the side of the pressure-taking section.

13. The burner according to claim 11, wherein the pressure taking section comprises a fixed section protruding from the pressure taking wall surface and an extension section extending laterally from the free end of the fixed section;

The pressure-taking nozzle is provided with a pressure-taking hole therethrough, and the pressure-taking hole has a pressure-taking port located in the cavity, and the pressure-taking port is arranged at the end of the extension section.

14. The burner of claim 11, wherein the pressure taking wall is disposed facing upward.

15 . The burner according to claim 1 , wherein a plurality of the pressure taking nozzles are provided, and the plurality of the pressure taking nozzles are distributed on the combustion body. 16 .

16. A water heater, comprising:

a wind pressure detection device; and,

A burner as claimed in any one of claims 1 to 15.

17. The water heater according to claim 16, wherein the wind pressure detection device comprises a detection body, and the detection body is an absolute pressure sensor or a differential pressure sensor.

18. The water heater according to claim 17, wherein the detection body and the pressure nozzle are connected by a flexible conduit.

19. The water heater according to claim 16, characterized in that, the water heater further comprises a casing, and the burner and the wind pressure detection device are accommodated in the inner cavity of the casing; and/or,

The water heater further includes a fan, the fan is connected to the combustion main body, and is used for feeding air into the chamber, and the pressure taking nozzle is arranged at intervals from the fan.