CN114353336A

CN114353336A - Water heater

Info

Publication number: CN114353336A
Application number: CN202111680333.XA
Authority: CN
Inventors: 范威; 黄茂林; 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: 2022-04-15

Abstract

The invention discloses a water heater, which comprises a burner and an air pressure detection device, wherein an air cavity for gas circulation is formed in the burner; the wind pressure detection device comprises a detection main body and two pressure taking nozzles, wherein one of the two pressure taking nozzles is communicated with the detection main body and the air cavity, and the other one of the two pressure taking nozzles is communicated with the detection main body and the atmospheric environment. Compared with the scheme directly arranged in the fan, the invention can avoid the adverse effect on the pressure taking result of the pressure taking nozzle when the air pressure in the fan is unstable, is beneficial to stabilizing the flow speed and uniformly distributing, ensures that the pressure taking nozzle is fully contacted with the homogeneous air flow, and is beneficial to improving the accuracy of air pressure detection; because the atmospheric pressure value of atmospheric environment is relatively stable, according to the change around the pressure differential between atmospheric pressure value and the intracavity atmospheric pressure value, can accurately learn the flue of water heater unusual to be favorable to unusual instant investigation, improve the use quality of water heater.

Description

Water heater

Technical Field

The invention relates to the technical field of water heaters, in particular to a water heater.

Background

The existing gas water heater generally obtains the pressure value inside the fan by arranging a pressure sensor, and then judges the flue state of the combustor according to the obtained pressure value. However, the flow field inside the fan of the combustor is generally not uniform, which easily causes the pressure taking result of the pressure sensor to fluctuate greatly, and reduces the accuracy of wind pressure detection.

Disclosure of Invention

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

In order to achieve the above object, the present invention provides a water heater, comprising:

the combustor is internally provided with an air cavity for gas circulation; and the number of the first and second groups,

wind pressure detection device, including detecting main part and two pressure nozzles of getting, two one intercommunication in the pressure nozzle detect the main part with the air cavity, another is used for the intercommunication detect main part and atmospheric environment.

Optionally, the water heater still includes the casing, the combustor with wind pressure detection device all holds and establishes in the casing.

Optionally, the combustor includes a housing, and the wind pressure detecting device is disposed on one side of the housing;

at least one pressure taking nozzle penetrates through the shell and/or the machine shell.

Optionally, a mounting cavity is defined between the housing and the casing;

the wind pressure detection device is arranged in the installation cavity, one pressure taking nozzle penetrates inwards the shell and is communicated with the air cavity, and the other pressure taking nozzle penetrates outwards the shell and is communicated with the atmosphere.

Optionally, the wind pressure detecting device further comprises a conduit connecting the detecting body and the pressure taking nozzle;

the conduit is in a flexible and bendable arrangement.

Optionally, the pressure extraction nozzle penetrating the casing is disposed adjacent to the detection body.

Optionally, the pressure taking nozzle penetrating through the shell and/or the casing is a pre-installed pressure taking nozzle, the corresponding shell and/or the casing is provided with an installation plate, and the installation plate is provided with an installation hole;

the pre-assembled pressure taking nozzle and the mounting plate are integrally arranged, and the mounting hole forms the pre-assembled pressure taking nozzle; or,

the pre-assembled pressure taking nozzle penetrates through the mounting hole and is detachably connected with the mounting plate.

Optionally, the pre-installed pressure tapping nozzle comprises a tubular body and a connecting protrusion formed by laterally protruding from the side wall of one end of the tubular body;

the tubular body is arranged in the mounting hole in a penetrating mode, the connecting bulge is abutted to the mounting plate, and the mounting plate can be detachably connected.

Optionally, the pre-assembled pressure tapping nozzle is provided with a pressure tapping port, and the pressure tapping port is flush with the hole opening of the mounting hole at the position.

Optionally, the mounting plate is formed on the housing, the mounting plate being disposed downward or laterally; or,

the pre-assembled pressure taking nozzle is provided with a pressure taking opening, and the pressure taking opening is arranged downwards and/or in the lateral direction.

Optionally, a plurality of pressure taking nozzles are distributed on the shell in a scattered manner; and/or the presence of a gas in the gas,

the pressure taking nozzles are distributed on the shell in a scattered manner.

Optionally, the burner is formed with a combustion chamber having an intake end and a smoke exhaust end;

the combustion chamber forms the air cavity, and the pressure taking nozzle communicated with the air cavity is arranged at the air inlet end and/or the smoke exhaust end.

Optionally, the combustor further forms an air inlet chamber communicated with an air inlet end of the combustion chamber, and the air inlet chamber forms the air cavity; and/or the presence of a gas in the gas,

the combustor is also provided with a smoke collection chamber communicated with the smoke discharge end of the combustion chamber, the ventilation section of the smoke collection chamber is arranged in a gradually-reduced manner in the direction far away from the combustion chamber, and the smoke collection chamber forms the air cavity; and/or the presence of a gas in the gas,

the combustor protrudes outwards from the smoke exhaust end of the combustion chamber to form a smoke outlet pipe, and the smoke outlet pipe defines the air cavity.

Optionally, the water heater further comprises an adjusting device, wherein the adjusting device is connected with the burner and used for adjusting the combustion state of the burner;

the detection main body is used for respectively sensing the pressure value in the cavity of the air cavity and the atmospheric pressure value through the two pressure taking nozzles;

the wind pressure detection device further comprises a control part, wherein the control part is electrically connected with the detection main body and the adjusting device respectively, so that the adjusting device is controlled to work according to the pressure value in the cavity and the atmospheric pressure value.

Optionally, the burner is formed with a combustion chamber, the combustion chamber being in communication with the air cavity;

the adjusting device comprises:

the gas assembly comprises a gas pipeline and a proportional valve, the gas pipeline is arranged on the combustor and used for introducing gas into the combustion chamber, and the proportional valve is arranged on the gas pipeline and used for adjusting the gas quantity introduced into the combustion chamber; and/or the presence of a gas in the gas,

and the fan is arranged on the combustor and used for adjusting the air volume accessed into the combustion chamber.

Optionally, the regulating device comprises the gas burning component and the fan;

the control unit with the proportional valve the fan is electric connection respectively, with be in when the difference between intracavity pressure value with the atmospheric pressure value is greater than pressure differential calibration value, confirm the water heater is in the wind blockage trouble, and control the rotational speed of fan increase and/or the aperture of proportional valve reduces and is in when the difference between intracavity pressure value and the atmospheric pressure value is less than pressure differential calibration value, confirm the water heater is in the convulsions trouble, and control the rotational speed of fan reduces and/or the aperture of proportional valve increases.

In the technical scheme provided by the invention, the air cavity is formed in the combustor and can be communicated with air supply components such as a fan and the like, and one pressure taking nozzle of the air pressure detection device is arranged in the air cavity, so that the adverse effect on the pressure taking result of the pressure taking nozzle when the air pressure in the fan is unstable can be avoided compared with the scheme of directly arranging the pressure taking nozzle in the fan; when the airflow passes through the air cavity from the fan, the stable flow speed and the uniform distribution are facilitated, so that the pressure taking nozzle is in full contact with the uniform airflow, and the accuracy of wind pressure detection is facilitated to be improved; the wind pressure detection device exposes the other pressure taking nozzle in the atmospheric environment, so that a relatively stable atmospheric pressure value can be obtained, the abnormity of the flue of the water heater can be accurately known according to the change of the pressure difference between the pressure value in the cavity and the atmospheric pressure value, the abnormity can be checked immediately, and the use quality of the water heater is improved.

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

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

FIG. 3 is a schematic structural diagram of a second embodiment of a water heater provided by the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic structural diagram of a third embodiment of a water heater provided by the present invention;

FIG. 6 is an enlarged view of the structure at C in FIG. 5;

FIG. 7 is a schematic structural diagram of a fourth embodiment of a water heater provided by the present invention;

fig. 8 is a schematic structural diagram of a fifth embodiment of the water heater provided by the invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Water heater	221	First pressure-taking nozzle
100	Burner with a burner head	222	Second pressure-taking nozzle
				101	Shell body	223a	Tubular body
102	Mounting plate	223b	Connecting projection
				103	Mounting hole	224	Pressure tapping
110	Air cavity	225	Pressure tapping section
				111	Air inlet chamber	230	Catheter tube
112	Combustion chamber	240	Control unit
				113	Heat exchange chamber	300	Casing (CN)
114	Smoke collecting chamber	310	Mounting cavity
				115	Smoke outlet pipe	410	Gas component
200	Wind pressure detection device	411	Gas pipeline
				210	Detection main body	412	Proportional valve
220	Pressure taking nozzle	420	Fan blower

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 water heater, which may be a product and an apparatus for home bathing, heating, etc. using high-temperature hot water generated by gas combustion. Fig. 1 to 8 show a water heater according to an embodiment of the present invention.

Referring to fig. 1 to 2, a water heater 1 according to the present invention includes a burner 100 and a wind pressure detecting device 200. Wherein, an air cavity 110 for gas circulation is formed inside the burner 100; the wind pressure detecting apparatus 200 includes a detecting body 210 and two pressure taking nozzles 220, one of the two pressure taking nozzles 220 communicating the detecting body 210 with the air chamber 110, the other one communicating the detecting body 210 with the atmospheric environment.

In the technical scheme provided by the invention, the air cavity 110 is formed inside the combustor 100 and can be communicated with air supply components such as a fan 420, and one of the pressure taking nozzles 220 of the air pressure detection device 200 is arranged in the air cavity 110, so that adverse effects on the pressure taking result of the pressure taking nozzle 220 when the air pressure inside the fan 420 is unstable can be avoided compared with the scheme of directly arranging the pressure taking nozzle in the fan 420; when the air flow passes through the air cavity 110 from the fan 420, the stable flow rate and the uniform distribution are facilitated, so that the pressure taking nozzle 220 is in full contact with the uniform air flow, and the accuracy of air pressure detection is facilitated to be improved; the wind pressure detection device 200 exposes the other pressure taking nozzle 220 in the atmospheric environment, so that a relatively stable atmospheric pressure value can be obtained, the flue abnormality of the water heater 1 can be accurately known according to the change of the pressure difference between the pressure value in the cavity and the atmospheric pressure value, the abnormality can be conveniently checked immediately, and the use quality of the water heater 1 is improved.

The water heater 1 that this design relates to is gas heater. The gas water heater generally uses gas as fuel, generates high-temperature flue gas by burning the fuel, and transfers the heat of the high-temperature flue gas to the heat exchanger so as to achieve the purpose of preparing hot water.

The burner 100 is the component of the water heater 1 where the combustion primarily occurs. An air chamber 110 is formed inside the burner 100, the air chamber 110 is configured to allow air to flow therethrough, and the air chamber 110 directly constitutes a flue or is in communication with the flue. Since oxygen or air carrying oxygen is required as combustion-supporting gas (hereinafter, referred to as air for convenience of understanding) when the fuel is ignited, the gas flowing through the air cavity 110 may be air, gas, a mixture of air and gas, high-temperature flue gas, or the like.

The wind pressure detecting device 200 is disposed on the water heater 1. The wind pressure detecting device 200 generally includes a detecting body 210, and the detecting body 210 may be any suitable product and device for collecting pressure detection data, such as a pressure sensor. In this embodiment, the wind pressure detecting apparatus 200 further includes two pressure taking nozzles 220, and therefore, the detecting main body 210 is embodied as a differential pressure sensor and has two independent detecting ports, and the two pressure taking nozzles 220 are in one-to-one communication with the two detecting ports.

Of the two pressure taps 220, the pressure tap 220 for communicating the detection port of the detection body 210 with the air cavity 110 is a first pressure tap 221 capable of sensing an intra-cavity pressure value inside the air cavity 110; the pressure nozzle 220 for communicating the detecting body 210 and the atmosphere is a second pressure nozzle 222, which can sense the atmospheric pressure in the atmosphere.

The wind pressure detecting apparatus 200 generally further includes a control component 240, wherein the control component 240 is electrically connected to the detecting body 210 to receive the pressure value in the cavity and the atmospheric pressure value sensed by the two pressure nozzles 220. The control unit 240 analyzes and compares the pressure value in the cavity with the atmospheric pressure value, and controls and adjusts related functional units of the water heater 1 according to the analysis result, which is described in detail below.

The control unit 240 may be provided separately and exclusively for the detection body 210, and the control unit 240 is electrically connected to a control device unique to the water heater 1; alternatively, the control unit 240 may be provided integrally with a control device unique to the water heater 1, and the control unit 240 may constitute a part of the control device.

It will be appreciated that when the installation position of the water heater 1 is determined, the atmospheric pressure value in the environment in which it is located generally remains stable with a small variation. Even if the atmospheric pressure value changes under the influence of the nonreactive factors, the pressure value in the cavity changes, but the two variables are not the same. Therefore, by comparing the pressure value in the cavity with the atmospheric pressure value, for example, calculating the pressure difference between the pressure value in the cavity and the atmospheric pressure value, the adverse effect of the force ineffectiveness factor can be eliminated, so that the change of the pressure value in the cavity before and after is more obvious and accurate, and then the combustion state of the water heater 1 can be quickly and accurately detected through the pressure difference, thereby being beneficial to timely finding out fault abnormality and quickly eliminating the abnormality.

In an embodiment, the water heater 1 further includes a housing 300, the interior of the housing 300 defines a cavity, and the burner 100 and the wind pressure detecting device 200 are accommodated in the cavity of the housing 300. The burner 100 generally further comprises a housing 101 forming the air cavity 110. The size of the burner 100 is generally larger than that of the wind pressure detecting device 200. It is understood that the wind pressure detecting device 200 may be directly disposed inside the burner 100, for example, in the air cavity 110, such that a detecting port of the detecting body 210 is directly exposed in the air cavity 110 to form the first pressure extracting nozzle 221; the second pressure taking nozzle 222 sequentially penetrates through the casing 101 and the casing 300 outwards, and then is communicated to the atmosphere.

Of course, the burner 100 and the wind pressure detecting device 200 may be independent of each other and kept in parallel. The burner 100 is generally accommodated in the cavity of the housing 300, and the wind pressure detecting device 200 is disposed at one side of the housing 101, so as to reduce the space occupation of the water heater 1 in the vertical direction.

Specifically, the burner 100 and the wind pressure detecting device 200 may be disposed at an interval. The burner 100 and the wind pressure detecting apparatus 200 are both fixedly mounted on the housing 300, so that the dismounting operations of the burner and the wind pressure detecting apparatus are not affected by each other. The wind pressure detecting device 200 may be accommodated in the cavity, and at this time, the first pressure-taking nozzle 221 penetrates the casing 101 inward and is communicated with the air cavity 110, and the second pressure-taking nozzle 222 penetrates the casing 300 outward and is communicated with the atmosphere. The wind pressure detecting device 200 may also be disposed outside the casing 300, and at this time, the first pressure taking nozzle 221 sequentially penetrates through the casing 300 and the casing 101, and then is communicated with the air cavity 110, and the remaining detection port of the detection main body 210 is directly exposed to the atmosphere, thereby forming the second pressure taking nozzle 222.

When the combustor 100 and the wind pressure detecting device 200 are both accommodated inside the casing 300, the combustor 100 and the wind pressure detecting device 200 can be abutted to each other, so that the combustor 100 and the wind pressure detecting device 200 are relatively fixed, and the pressure taking nozzle 220 is prevented from being pulled and falling off due to the mutual displacement between the combustor 100 and the wind pressure detecting device 200 in the using process due to the fact that the pressure taking nozzle 220 is pulled.

Next, in order to facilitate the disassembly and assembly operation, the casing 101 and the inner surface of the casing 300 at the corresponding position are not completely fitted and attached, at least in a partial region, an installation cavity 310 is defined between the casing 101 and the outer surface of the wind pressure detecting device 200 and the inner surface of the casing 300 at the corresponding position, the wind pressure detecting device 200 is disposed in the installation cavity 310, the first pressure taking nozzle 221 penetrates the casing 101 inwards and is communicated with the air cavity 110, and the second pressure taking nozzle 222 penetrates the casing 300 outwards to be communicated with the atmosphere.

As can be seen from the above, at least one pressure nozzle 220 is spaced from the corresponding detection port, and therefore, the pressure nozzle 220 and the detection port need to be communicated through the conduit 230. Referring to fig. 1, in an embodiment, the wind pressure detecting apparatus 200 further includes a conduit 230, and the conduit 230 connects the detecting port of the detecting body 210 and the pressure taking nozzle 220.

The duct 230 may be a rigid pipe, which is designed as a straight pipe or a bent pipe bent in a desired direction, and the rigid pipe may be fixedly connected to the housing 101 and/or the housing 300 at the position, and is also used for supporting the detecting body 210, so as to enhance the stable installation of the wind pressure detecting device 200 in the housing 300.

Of course, in one embodiment, at least a portion of the conduit 230 is flexibly bendable. The guide tube 230 may be provided to be integrally made of a flexible material so that the guide tube 230 as a whole can be bent in response to an installation environment; the conduit 230 may also be configured such that a portion of the length of tubing is made of a flexible material and the remaining length of tubing is made of a rigid material, such that the conduit 230 is capable of both bending to accommodate certain installation environments and providing sufficient strength. The flexible material is not limited and may be, for example, rubber, cotton, or the like.

Further, in one embodiment, at least a portion of the conduit 230 is elastically disposed. Similarly to the above, the conduit 230 may be formed of an elastic material as a whole, or may be formed of a part of the tube section made of an elastic material and the rest of the tube section made of a non-elastic material. Thus, at least part of the pipe section of the conduit 230 can be stretched, compressed and bent under the action of external force, and the conduit is more suitable for different installation environments; and when at least part of the pipe section of the conduit 230 is clamped between two components of the water heater 1, the conduit can also be used as a buffer between the two components.

In the wind pressure detecting apparatus 200, at least one pressure nozzle 220 needs to be disposed through the housing 101 and/or the housing 300, and for the convenience of understanding, the pressure nozzle 220 disposed through the housing 101 and/or the housing 300 is named as a pre-installed pressure nozzle. For example, in the embodiments of fig. 1 to 6, since the first pressure nozzle 221 needs to penetrate the housing 101 inward and the second pressure nozzle 222 needs to penetrate the casing 300 outward, any one of the two pressure nozzles 220 is the pre-assembled pressure nozzle.

When the pre-loading pressure nozzle is disposed on the burner 100, the position of the pre-loading pressure nozzle on the burner 100 is kept fixed, so that in order to save the consumables of the structure of the conduit 230 and the like and simplify the layout of the structure of the conduit 230 and the like, in an embodiment, the detection main body 210 is disposed adjacent to the pre-loading pressure nozzle. It is understood that there are various approaches to the proximity arrangement, for example, when the pre-loading nozzle is disposed in the lower region of the burner 100, the detection body 210 can be fixed at the lower position of the second chamber; for another example, when the pre-loading pressure nozzle is disposed on one side of the burner 100, the detection body 210 may be fixed at the mounting cavity 310 located on the same side of the burner 100.

In the above description, the housing 101 and the chassis 300 may be of an integral structure or of a split structure. Taking the housing 101 as an example, when the housing 101 includes a plurality of separate structures, the separate structures may be assembled by welding or detachably connected to each other to form the housing 101. The detachable connection may be, but is not limited to, one or more of a threaded fixation, a snap fixation, an absorption fixation, and an adhesive fixation.

If the split structure penetrated by the pre-installed pressure tap is named as the mounting plate 102, and the rest split structure is named as the housing main body, the mounting plate 102 may be integrally formed with the housing main body as described above, or the mounting plate 102 may be detachably connected to the housing main body. It will be appreciated that the housing body may be configured to receive most of the functional components of the burner 100 and may be provided with an open slot structure, and that the mounting plate 102, when coupled to the housing body, covers the open slot of the slot structure to enclose and define the air cavity 110. In this way, when the pre-assembled pressure nozzle needs to be replaced by another operation, the mounting plate 102 only needs to be removed, and the interference influence on most functional components of the burner 100 is reduced.

Further, the preassembled pressure nozzle and the mounting plate 102 may be integrally formed or may be provided separately. Specifically, the method comprises the following steps:

in one embodiment, the mounting plate 102 has a mounting hole 103 extending therethrough along a thickness direction thereof. The pre-load tap is integral with the mounting plate 102. In this case, the mounting hole 103 directly constitutes the pre-loading pressure tap. The outer section of the mounting hole 103 may be provided with a connection structure connected to the conduit 230, such as an inner thread, adapted to the outer thread of the conduit 230 and screwed for fixing. Or, an annular convex column is annularly arranged on the outer wall of the casing 101 along the circumferential direction of the mounting hole 103, one of the annular convex column and the guide pipe 230 is provided with an internal thread, the other one of the annular convex column and the guide pipe is provided with an external thread matched with the internal thread, and the annular convex column and the guide pipe are fixedly connected through the threads.

In another embodiment, the mounting plate 102 has a mounting hole 103 extending therethrough in a thickness direction thereof. The pre-assembled pressure taking nozzle is arranged separately from the mounting plate 102. At this time, the pre-assembled pressure taking nozzle penetrates through the mounting hole 103 from outside to inside and is detachably connected with the mounting plate 102. The outer end of the pre-assembled pressure nozzle may be formed with a connection section protruding outward, the connection section is connected to the conduit 230, for example, one of the connection section and the conduit 230 is provided with an internal thread, and the other is provided with an external thread matching with the internal thread, and the two are fixed in threaded connection.

Further, referring to fig. 4, in an embodiment, the pre-installed pressure tapping nozzle includes a tubular body 223a and a connecting protrusion 223b formed by protruding from a side wall of one end of the tubular body 223 a. The tubular body 223a is inserted into the mounting hole 103, and the connecting protrusion 223b may be disposed on the inner side of the mounting plate 102 or on the outer side of the mounting plate 102. The coupling projection 223b abuts the mounting plate 102 and is detachably coupled to the mounting plate 102.

The connecting surface between the connecting projection 223b and the mounting plate 102 is generally adapted to each other, for example, two straight surfaces parallel to each other or two curved surfaces with the same radian. Of course, connect protruding 223b with the concave-convex structure of mutual adaptation can be provided with to the connection face between the mounting panel 102, concave-convex structure can increase connect protruding 223b with area of contact between the mounting panel 102, and avoid the mutual blowby of gas of the inside and outside both sides of mounting hole 103 causes gas leakage pollution.

The connection protrusion 223b and the mounting plate 102 may be, but not limited to, one or more of screw fastening, snap fastening, suction fastening, and adhesive fastening.

The connecting projection 223b can be protruded from one side of the tubular body 223 a; or at least two connecting projections 223b are provided, and two connecting projections 223b are respectively provided on two opposite sides of the tubular body 223 a; of course, the connecting projection 223b may extend continuously along the circumferential direction of the tubular body 223a to form a ring shape.

In the above embodiment, the connection between the plurality of split structures, the connection between the housing main body and the mounting plate 102, and the connection between the pre-assembled pressure tap and the mounting plate 102 are all sealed connections, so as to avoid air leakage.

Specifically, taking the connection between the pre-assembled pressure nozzle and the mounting plate 102 as an example, the connection protrusion 223b may be made of an elastic material, such as rubber. The coupling projection 223b is provided to be screwed to the mounting plate 102 by, for example, a screw, and when the coupling projection 223b is deformed by a force applied thereto, the coupling projection 223b is facilitated to be brought into close contact with the mounting plate 102. Alternatively, a sealing gasket may be provided between the coupling protrusion 223b and the mounting plate 102, which will not be described in detail.

The specific expression of the pre-assembled pressure nozzle is not limited in the design, and a part of the structure of the pre-assembled pressure nozzle will be illustrated below. For the sake of understanding, in the following embodiments, the first pressure taking nozzle 221 is taken as the pre-loading pressure taking nozzle as an example.

Referring to fig. 1-2, in one embodiment, the pre-assembled pressure tapping nozzle has a pressure tapping port 224, and the pressure tapping port 224 is flush with the opening of the mounting hole 103. Specifically, the pressure taking port 224 is substantially flush with the inner side surface of the mounting plate 102 on the peripheral side, so that the airflow passing through the first pressure taking nozzle 221 does not interfere with the first pressure taking nozzle 221, thereby preventing the first pressure taking nozzle 221 from increasing the wind resistance of the passing airflow, disturbing the flow rate of the gas, and contributing to the smooth airflow at the pressure taking position.

In addition, in an embodiment, the mounting plate 102 is formed on the housing 101, and an inner sidewall of the mounting plate 102 is disposed downward or laterally. During the combustion process of the burner 100, the inner cavity wall of the air cavity 110 or the outer wall of the components inside the air cavity 110 may be condensed to form condensed water. The mounting plate 102 is arranged downwards or in a side direction, so that condensed water condensed on the mounting plate 102 flows downwards under the action of gravity, and the phenomenon that the condensed water enters the first pressure taking nozzle 221 along the same direction to cause the blockage of the first pressure taking nozzle 221 cup or the pollution to cause pressure taking failure can be avoided.

In one embodiment, the pre-filled pressure tap is provided with a pressure port 224, and the pressure port 224 is arranged downwards and/or sideways.

Specifically, the first pressure-extracting nozzle 221 is disposed to penetrate from the outside to the inside and protrude from the mounting plate 102 to form a pressure-extracting section 225 inside the air cavity 110. The first pressure-extracting nozzle 221 has a pressure-extracting opening 224 located in the air cavity 110, and the pressure-extracting opening 224 is formed on the pressure-extracting section 225 downward and/or laterally. As such, the pressure taking section 225 protrudes upward from the mounting plate 102 on the peripheral side, and the installation height of the pressure taking port 224 can be increased, thereby preventing condensed water condensed at the pressure taking section 225 from entering the pressure taking port 224; meanwhile, the pressure taking port 224 is arranged downward and/or sideways, so that condensed water falling downward can be prevented from directly entering the first pressure taking nozzle 221.

Referring to fig. 3 to 4, in an embodiment, the pressure-taking section 225 may be substantially a straight tube. The pressure tapping port 224 can be arranged at the end of the free end of the pressure tapping section 225, and particularly when the inner side wall of the mounting plate 102 is arranged to face upwards, the pressure tapping section 225 is arranged to at least raise the arrangement height of the pressure tapping port 224, so that the pressure tapping port 224 and the mounting plate 102 have a height difference, and condensed water condensed at the pressure tapping section 225 is prevented from entering the pressure tapping port 224. In addition, the pressure extraction port 224 may be disposed at a side portion of the pressure extraction section 225, and the pressure extraction port 224 is disposed higher than the mounting plate 102. As described above, the pressure extraction port 224 located on the side of the pressure extraction section 225 can shift the direction of the air flow entering and the direction of the condensed water falling, while achieving the purpose of raising the height of the pressure extraction port 224, and the condensed water dropping downward can be prevented from entering the first pressure extraction nozzle 221 in a favorable manner.

Referring to fig. 5-6, in one embodiment, the pressure extraction section 225 may be substantially curved. The pressure taking section 225 comprises a fixed section which is arranged in a protruding manner on the mounting plate 102 and an extension section which extends from the free end side of the fixed section in a lateral direction; the fixed section is approximately in a straight tube shape extending vertically, the extending section is approximately in a straight tube shape extending horizontally, and the connection part of the fixed section and the extending section is in arc transition, so that the influence on passing air flow caused by overhigh height of the pressure taking section 225 can be avoided, and smooth guiding on the passing air flow is facilitated. The specific structure of each of the fixing section and the extending section is not limited, and the fixing section and the extending section can be set to be required sectional shape, size and material according to actual needs.

It will be appreciated that when the pressure taking section 225 includes the fixed section and the extension section, the pressure taking port 224 may be formed at any side portion of the fixed section, an end portion of the free end of the extension section, and a side portion of the extension section facing downward, and also helps to make the entering direction of the air flow at the pressure taking port 224 offset from the falling direction of the condensed water, so as to avoid the condensed water dropping downward from entering the first pressure taking nozzle 221.

In the above-described structure of the first pressure nozzle 221, one or more pressure ports 224 may be provided in the same first pressure nozzle 221, and the specific shape and the like are not limited.

In addition, in an embodiment, the first pressure-extracting nozzle 221 is distributed on the housing 101 in a plurality; and/or a plurality of second pressure taking nozzles 222 are distributed on the machine shell 300 in a dispersed manner.

Specifically, the first pressure-extracting nozzle 221 is provided with a plurality of nozzles. When one air cavity 110 is provided, the plurality of first pressure nozzles 221 may be dispersedly disposed on the same cavity wall of the air cavity 110, or may be dispersedly disposed on at least two cavity walls of the air cavity 110, so as to increase the data volume of the collected wind pressure in the same region, and to contribute to improving the accuracy of detecting the wind pressure in the region. When the air cavity 110 is provided with a plurality of air cavities, the first pressure taking nozzles 221 can be dispersedly distributed in at least two air cavities 110, so that the diversity of the wind pressure detection of the combustor 100 is increased, the collection types of the wind pressure of the combustor 100 are enriched, and the accuracy of the whole wind pressure detection result of the combustor 100 is improved.

Furthermore, the specific form of the air cavity 110 on the burner 100 may be different according to different application requirements:

in one embodiment, the combustor 100 has at least a combustion chamber 112 formed therein, and the combustion chamber 112 is used for forming a sufficient space for combustion.

It is understood that the combustion chamber 112 has an inlet end and an outlet end, the inlet end is provided for at least one of the combustion-supporting gases to enter, and after the combustion-supporting gases flow through the combustion chamber 112 and are combusted, the high-temperature flue gas generated is discharged from the outlet end. The burner 100 may further include a combustion assembly disposed in the combustion chamber 112 proximate the intake end for combustion under a flow of combustion gases. The combustion assembly includes a fire bank.

The air inlet end and the smoke outlet end may be formed at any position of the combustion chamber 112, for example, in an aspect, the air inlet end and the smoke outlet end may be oppositely disposed at two sides of the combustion chamber 112, which helps to form a sufficiently long flow path in a limited space of the combustion chamber 112, so that sufficient high-temperature smoke is generated after combustion of the combustion-supporting gas is more sufficiently and effectively performed.

Of course, in a further aspect, when the combustion chamber 112 is disposed to extend in the up-down direction, the air inlet end may be formed at the lower end of the combustion chamber 112, and the smoke outlet end is correspondingly formed at the upper end of the combustion chamber 112, so that as much high-temperature smoke as possible can be automatically gathered and discharged towards the smoke outlet end based on the fact that the high-temperature smoke generally naturally flows upwards.

Based on the above, the combustion chamber 112 may constitute the air chamber 110. The first pressure extraction nozzle 221 may be disposed at any position of the combustion chamber 112, for example, at any side portion of the combustion chamber 112, and/or at an air inlet end and a smoke outlet end of the combustion chamber 112. Wherein, because the combustion chamber 112 is mainly used for combustion, in an operating state, the temperature in the combustion chamber 112 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 first pressure taking nozzle 221 is disposed in or at the side of the combustion chamber 112, 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. Therefore, in a further aspect, the first pressure extraction nozzle 221 may be disposed near an air inlet end of the combustion chamber 112, and/or near a smoke outlet end of the combustion chamber 112.

In addition, referring to fig. 1, fig. 3 and fig. 5, in an embodiment, an air intake chamber 111 and a combustion chamber 112 sequentially communicated along an air flow direction may be formed inside the combustor 100, the air intake chamber 111 is used for receiving at least one combustion-supporting gas into the combustion chamber 112, and the combustion chamber 112 is used for forming a sufficient space for combustion. When the burner 100 includes a combustion assembly as described above, the combustion assembly may be disposed at a communication between the intake chamber 111 and the combustion chamber 112, that is, at an outlet of the intake chamber 111 and an intake end of the combustion chamber 112.

When the combustion gas comprises air and gas, the inlet chamber 111 may be used for accessing the air and/or the gas. Wherein, when the air inlet chamber 111 is used for accessing one of the air and the gas, the other of the air and the gas can be accessed through other structures.

For example, in the present embodiment, the air inlet chamber 111 may be configured to receive external air, and specifically, the air inlet chamber 111 may be in communication with a blower 420, and external air is guided by the blower 420 to automatically flow into the air inlet chamber 111 and then enter the combustion chamber 112; the blower 420 may be disposed at an inlet of the intake chamber 111, at a middle portion of the intake chamber 111, or at an outlet of the intake chamber 111, without limitation.

In other embodiments, the air inlet chamber 111 may also be used to receive a mixed gas of the air and the gas, and based on this, the air inlet chamber 111 is equivalent to the air mixing cavity 110 and the gas distribution cavity 110 which form the air and the gas, and can distribute the mixed gas to the combustion assembly as required to meet the combustion requirement of the combustion assembly, which is not described in detail.

Based on the above, the first pressure nozzle 221 may be disposed in the air inlet chamber 111. Specifically, the air inlet chamber 111 may be disposed at a side portion thereof, and/or at an end of the air inlet chamber 111 away from the combustion chamber 112, for the purpose of measuring the air pressure at the location.

It should be noted that, when the first pressure taking nozzle 221 is disposed in the air inlet chamber 111 and the blower 420 is disposed at the inlet of the air inlet chamber 111, the first pressure taking nozzle 221 may be disposed close to the inlet of the air inlet chamber 111, but needs to be spaced apart from the blower 420 to reduce disturbance of the blower 420 to the air flow at the pressure taking position of the first pressure taking nozzle 221. It can be understood that the first pressure-taking nozzle 221 is disposed in the air inlet chamber 111, even though there is fluctuation in the air flow blown by the blower 420, the air flow can be uniformly diffused and stabilized in the air chamber 110 after entering the air chamber 110, so that the air flow is more stable than that in the blower 420 when passing through the first pressure-taking nozzle 221.

In addition, in an embodiment, the combustor 100 may have a combustion chamber 112 and a heat exchange chamber 113 formed therein and sequentially communicated with each other along an airflow direction, and a heat exchanger, such as a heat exchange pipe through which tap water flows, is disposed in the heat exchange chamber 113, and the heat exchange pipe is sequentially wound along a circumferential direction and an up-down direction of the heat exchange chamber 113. The combustion chamber 112 and the heat exchange chamber 113 may be integrally provided or may be separately provided. High-temperature flue gas generated by combustion in the combustion chamber 112 can enter the heat exchange chamber 113 to exchange heat with the heat exchange tubes in the heat exchange chamber 113, so as to achieve the purpose of producing hot water. Based on this, the heat exchange chamber 113 may constitute the air chamber 110.

In addition, referring to fig. 7, in an embodiment, a combustion chamber 112 and a smoke collection chamber 114 sequentially communicated along an airflow direction may be formed inside the burner 100, and the smoke collection chamber 114 is configured to collect high-temperature smoke generated by combustion in the combustion chamber 112, so as to be intensively discharged or intensively exchange heat. The smoke chamber 114 may constitute the air chamber 110.

The smoke chamber 114 is tapered away from the combustion chamber 112. Specifically, for example, at least one side wall surface of the smoke collecting chamber 114 is inclined toward the other side wall surface in a direction away from the combustion chamber 112, so that the ventilation section of the smoke collecting chamber 114 is reduced or gradually reduced in the flow direction of the smoke, thereby achieving the purpose of collecting the smoke and facilitating the concentrated discharge of the smoke.

The first pressure nozzle 221 may be disposed at the smoke collecting chamber 114, specifically, at a side portion of the smoke collecting chamber 114, and/or at an end of the smoke collecting chamber 114 far from the combustion chamber 112, so as to measure the wind pressure at the position.

In addition, referring to fig. 8, in an embodiment, when the combustion chamber 112 has a smoke outlet as described above, the burner 100 includes a smoke outlet pipe 115 protruding outward from the smoke outlet end, and the first pressure-taking nozzle 221 is disposed on the smoke outlet pipe 115 for performing wind pressure detection on smoke flowing through the smoke outlet pipe 115. It can be understood that, since the smoke collection chamber 114 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 first pressure taking nozzle 221 may not be completely the same at different positions of the smoke collection chamber 114; the smoke outlet pipe 115 is substantially straight or partially bent, and compared with the smoke collection chamber 114, the smoke flowing through the smoke outlet pipe 115 can be kept stable at least partially, so that the first pressure taking nozzle 221 can be selectively arranged in the smoke collection chamber 114 and/or the smoke outlet pipe 115 according to actual needs for detecting wind pressure.

It should be noted that, when the above-mentioned at least two embodiments are combined, for example, an air inlet chamber 111, a combustion chamber 112, a heat exchange chamber 113, a smoke collecting chamber 114 and a smoke outlet pipe 115 which are sequentially communicated along an air flow direction may be formed inside the burner 100, at least one of the air inlet chamber 111, the combustion chamber 112, the heat exchange chamber 113, the smoke collecting chamber 114 and the smoke outlet pipe 115 may constitute the air cavity 110. The air inlet chamber 111, the combustion chamber 112, the heat exchange chamber 113, the smoke collecting chamber 114 and the smoke outlet pipe 115 form the air cavity 110, which is referred to above and will not be described in detail herein.

In order to realize the adaptive adjustment of the water heater 1, in an embodiment, the water heater 1 further includes an adjusting device, the adjusting device is connected to the burner 100 and is used for adjusting a combustion state of the burner 100, a specific type of the adjusting device is not limited, and the adjusting device is related to a specific limitation of the combustion state, and the combustion state is a state that can be directly or indirectly measured according to a pressure value measured by the wind pressure detecting device 200.

As can be seen from the above, the wind pressure detecting apparatus 200 further includes a control component 240. The control unit 240 is electrically connected to the detection main body 210 and the adjustment device, respectively, so as to control the adjustment device to work according to the pressure value in the cavity and the atmospheric pressure value and according to a set rule.

In the present design, for example, at the first time of production of the water heater 1, the control part 240 may calculate the difference between the pressure value in the chamber obtained by the first pressure taking nozzle 221 and the atmospheric pressure value obtained by the second pressure taking nozzle 222, and store the difference as a pressure difference calibration value. Next, in the process of actually using the water heater 1, the control unit 240 calculates a difference between the pressure value in the chamber obtained by the first pressure taking nozzle 221 in real time and the atmospheric pressure value obtained by the second pressure taking nozzle 222 in real time, and records the difference as the actual pressure difference value. And comparing the actual pressure difference value with the calibrated pressure value to determine whether the current combustion state of the water heater 1 is normal or not.

It can be understood that when the flue of the water heater 1 is blocked or is affected by inward blowing or the like, the pressure value in the cavity becomes large. Therefore, when the actual value of the pressure difference is judged to be larger than the calibrated value of the pressure difference, the water heater 1 can be determined to be in the wind blockage state currently.

On the contrary, when the flue of the water heater 1 is lengthened or affected by a common flue and the like, the pressure value in the cavity is reduced. Therefore, when the actual value of the pressure difference is judged to be smaller than the calibrated value of the pressure difference, the water heater 1 can be determined to be in the air draft state currently.

In addition, through calculating the specific numerical value of the difference between the actual value of the pressure difference and the calibrated value of the pressure difference, the degree of wind blockage or the degree of air draft of the water heater 1 can be correspondingly determined, and then the specific quantification of the regulating variable of the regulating device can be realized.

In the present embodiment, when the burner 100 is formed with the combustion chamber 112, the combustion chamber 112 communicates with the air chamber 110, or the combustion chamber 112 directly constitutes the air chamber 110, and the combustion chamber 112 has an air inlet. Based thereon, the regulating means comprises at least one of a gas fired assembly 410 and a fan 420.

The gas assembly 410 includes a gas pipe 411 and a proportional valve 412, the gas pipe 411 is disposed on the burner 100 for connecting the combustion chamber 112 with gas, and the proportional valve 412 is disposed on the gas pipe 411 for adjusting the gas amount connected to the combustion chamber 112.

The gas pipe 411 is formed with a gas inlet and at least one gas outlet, and the gas outlet can be communicated with the outlet of the gas inlet chamber 111, the gas inlet end of the combustion chamber 112 and/or the lower region of the combustion chamber 112 to be connected with gas; when the gas outlets are arranged in plurality, the gas outlets can be arranged at intervals along the circumferential direction of the combustion chamber 112, and the gas outlets can 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 112 as much as possible; or towards the combustion assembly, so that the gas sprayed from each gas outlet can fully act on the combustion assembly; 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 112.

Wherein the blower 420 is connected to the burner 100 and communicates with the air inlet to regulate the amount of air introduced into the combustion chamber 112.

The control unit 240 is electrically connected to the proportional valve 412 and the fan 420, respectively, to determine that the water heater 1 is in a wind blockage fault when the actual value of the pressure difference is greater than the calibrated value of the pressure difference. At this time, the control component 240 controls the rotation speed of the fan 420 to increase the air volume, on one hand, since the air volume in the combustion chamber 112 is relatively small when the water heater 1 is in the wind blockage state, the air volume in the combustion chamber 112 can be correspondingly increased by increasing the rotation speed of the fan 420, so that the air-fuel ratio in the combustion chamber 112 reaches the set range, which is beneficial to improving the combustion quality of the water heater 1; on the other hand, because the water heater 1 is in the wind blockage state, when the rotating speed of the fan 420 is increased and more air is introduced, the air can apply a reverse acting force to the wind blockage position, which is beneficial to reducing the wind blockage degree and even eliminating the wind blockage influence and eliminating faults.

Of course, the control part 240 may also control the opening degree of the proportional valve 412 to be decreased. Similarly, when the opening degree of the proportional valve 412 is decreased, the amount of gas that can be regulated and introduced into the combustion chamber 112 is decreased, and the air-fuel ratio in the combustion chamber 112 can be similarly brought within the set range, which is advantageous for improving the combustion quality of the water heater 1. It will be appreciated that the operation of the control blower 420 and the operation of the control proportional valve 412 may be performed alternatively or simultaneously.

And conversely, when the actual value of the pressure difference is smaller than the calibrated value of the pressure difference, determining that the water heater 1 is in air draft fault. At this time, the control component 240 controls the rotation speed of the fan 420 to decrease to reduce the air volume, on one hand, since the air volume in the combustion chamber 112 is relatively large when the water heater 1 is in the air draft state, the air volume in the combustion chamber 112 can be correspondingly decreased by decreasing the rotation speed of the fan 420, so that the air-fuel ratio in the combustion chamber 112 reaches the set range, which is beneficial to improving the combustion quality of the water heater 1; on the other hand, because water heater 1 is in the convulsions state, when the rotational speed of fan 420 reduces and insert less air, the atmospheric pressure in air cavity 110 can exert reverse effort to convulsions department, helps reducing convulsions degree or even eliminates convulsions influence, troubleshooting.

Of course, the control unit 240 may also control the opening of the proportional valve 412 to increase. Similarly, when the opening degree of the proportional valve 412 is increased, the amount of gas adjustably introduced into the combustion chamber 112 is increased, and the air-fuel ratio in the combustion chamber 112 can be similarly brought within the set range, which is advantageous for improving the combustion quality of the water heater 1. It will be appreciated that the operation of the control blower 420 and the operation of the control proportional valve 412 may be performed alternatively or simultaneously.

The adjustment of the rotation speed of the fan 420 and/or the opening degree of the proportional valve 412 may be a stepless adjustment or a stepped adjustment. In addition, the control unit 240 may directly calculate and compare the original collected data of the actual differential pressure value and the calibrated differential pressure value during the control process, or may convert the original collected data of the actual differential pressure value and the calibrated differential pressure value into electrical signals, such as frequency signals, according to a preset rule, and compare the frequency signals to achieve the control purpose.

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 water heater, comprising:

2. The water heater of claim 1, further comprising a cabinet, wherein the burner and the wind pressure detecting device are housed within the cabinet.

3. The water heater of claim 2, wherein said burner includes a housing, said wind pressure detecting means being provided on one side of said housing;

at least one pressure taking nozzle penetrates through the shell device and/or the machine shell.

4. The water heater as recited in claim 3 wherein said shell defines a mounting cavity between said shell and said cabinet;

the wind pressure detection device is arranged in the installation cavity, one pressure taking nozzle penetrates inwards the shell device and is communicated with the air cavity, and the other pressure taking nozzle penetrates outwards the shell to be communicated with the atmosphere.

5. The water heater according to claim 4, wherein said wind pressure detecting means further comprises a conduit connecting said detecting body and said pressure taking nozzle;

the conduit is in a flexible and bendable arrangement.

6. The water heater according to claim 4, wherein said pressure tap extending through said cabinet is disposed adjacent said detection body.

7. The water heater of claim 3, wherein the pressure tap extending through the housing and/or the cabinet is a pre-installed pressure tap, and the corresponding housing and/or the cabinet is provided with a mounting plate provided with mounting holes;

8. The water heater of claim 7, wherein the pre-installed pressure tap includes a tubular body and a connecting protrusion formed by laterally protruding from a side wall of one end of the tubular body;

9. The water heater according to claim 7, wherein the pre-load tap has a tap flush with the opening of the mounting hole at which it is located.

10. The water heater as claimed in claim 7, wherein the mounting plate is formed at the housing, the mounting plate being disposed downward or laterally; or,

11. The water heater according to claim 4, wherein a plurality of said pressure-taking nozzles are distributed on said shell device; and/or the presence of a gas in the gas,

the pressure taking nozzles are distributed on the shell in a scattered manner.

12. The water heater of claim 1, wherein the burner is formed with a combustion chamber having an air intake end and a smoke exhaust end;

13. The water heater of claim 12, wherein the burner further defines an inlet chamber in communication with an inlet end of the combustion chamber, the inlet chamber defining the air chamber; and/or the presence of a gas in the gas,

14. The water heater according to any one of claims 1 to 13, further comprising an adjusting device connected to the burner for adjusting a combustion state of the burner;

15. The water heater of claim 14, wherein the burner is formed with a combustion chamber, the combustion chamber being in communication with the air chamber;

the adjusting device comprises:

16. The water heater as recited in claim 15 wherein said regulating means includes said gas fired assembly and said fan;