CN217423595U - Heating device and gas water heater - Google Patents

Abstract

The utility model discloses a heating device, including casing and fire lid, the casing has well cavity, be provided with the passageway of ventilating in the cavity, the fire is covered and is provided with two at least combustion area that combustion area is inequality, the passageway of ventilating with the fire lid is linked together. A gas water heater is also disclosed. The utility model provides a heating device and a gas water heater, a first combustion area and a second combustion area with different combustion areas are designed, when heat is burnt in summer, the combustion area is small, the load is low, and the water is not hot in summer; when spring and autumn do not need big fire for combustion, the whole area is small fire for combustion, the heat exchanger is heated evenly, the water temperature is rapid and constant, the structure is simple, and the manufacturing cost is reduced.

Description

Heating device and gas water heater

Technical Field

The utility model relates to a gas heater's technical field especially relates to a heating device and gas heater.

Background

The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.

The gas water heater mainly comprises a valve body assembly, a main burner, a small fire burner, a heat exchanger, a safety device and the like, and also comprises a flue of a flue type water heater and a forced-ventilated device of a forced-ventilated type water heater. The valve body assembly controls the working procedure of the whole water heater and comprises a water valve, an air valve, a microswitch, an igniter and the like. When the water heater is installed, valves are installed on the water inlet pipe, the water outlet pipe and the gas pipe.

At present, the heating system of the gas water heater in the market basically heats air by a burner and then conducts the air to a heat exchanger, and more than 3 fire grates are arranged in a shell of the burner for combustion. At least one row of fire row burns during this kind of combustor small fire, and small fire load is on the high side to lead to summer water temperature on the high side, and the autumn water is partial fire row again and burns, and heat exchanger is heated unevenly, leads to the temperature inconstant, and heat exchanger life-span hangs down user experience also not good.

Therefore, it is desirable to design a heating device and a gas water heater that can realize small-fire combustion and uniform heat exchange of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

For solving the unable small fire heating that realizes of heating device who mentions among the background art, heat exchanger is heated inhomogeneous technical problem, the utility model provides a pair of heating device and gas heater to realize the heating of full area small fire, heat exchanger is heated evenly, and the temperature is invariable fast.

In order to achieve the above object, the utility model discloses a heating device and gas heater's concrete technical scheme as follows:

the utility model discloses a heating device, including casing and fire lid, the casing has well cavity, be provided with the passageway of ventilating in the cavity, it is regional to be provided with two at least burning that combustion area is inequality to cover on the fire, the passageway of ventilating with the fire lid is linked together.

As a preferred technical scheme of heating device, be provided with the partition structure on the fire lid, partition structure divides the fire lid into two at least combustion area.

As a preferred technical scheme of heating device, partition structure includes the baffle, and the baffle is divided into two at least combustion area with the fire lid to make the fire lid fire area size of crossing different.

As a preferable technical scheme of the heating device, the partition plate is of an annular plate-shaped structure.

As a preferred technical scheme of the heating device, the partition plate is arranged on the upper surface of the fire cover.

As a preferred technical scheme of heating device, be provided with a plurality of fire holes on the fire lid, a plurality of fire holes are the array and set up on the fire lid.

As a preferred technical scheme of the heating device, the shell is provided with an opening, and the edge of the fire cover is in interference fit with the opening.

As a preferred technical scheme of heating device, the air vent includes at least two air vent, and at least two air vent and at least two combustion area one-to-one correspondence sets up.

As a preferable technical solution of the heating device, the ventilation channel includes a first ventilation channel and a second ventilation channel, the at least two combustion areas include a first combustion area and a second combustion area, the first ventilation channel is communicated with the first combustion area, and the second ventilation channel is communicated with the second combustion area.

As a preferred technical scheme of heating device, be provided with first in the cavity chamber and draw and penetrate the pipe, first draws and penetrates the pipe and communicate with first breather passage, and first draws and penetrates the pipe and communicate with each other with first combustion area.

As a preferred technical scheme of heating device, first drawing penetrates the pipe and is provided with air inlet and gas outlet, and the air inlet setting is in the bottom surface of casing, and the bottom surface of gas outlet and fire lid is laminated mutually, and the gas outlet is corresponding with the setting of partition structure to make first draw intraductal gas of penetrating and first combustion area combustion reaction.

As a preferred technical scheme of heating device, second ventiduct and second draw and penetrate the pipe and be linked together, and the second draws and penetrates the pipe and set up the bottom surface at the casing to make the gas in the second ventiduct and the regional burning reaction of second burning.

As a preferred technical scheme of heating device, the second draws and penetrates the bottom surface setting of pipe protrusion casing, and the venthole setting that the second drew penetrates the pipe is at the bottom surface of casing.

The utility model also discloses a gas heater, including heat exchanger and as above heating device, heating device sets up in heat exchanger's below.

The utility model provides a heating device and a gas water heater, a first combustion area and a second combustion area with different combustion areas are designed, when the heat is burnt in summer, the combustion area is small, the load is low, and the water is not hot in summer; when spring and autumn do not need big fire combustion, the full-area small fire is combusted, the heat exchanger is heated uniformly, the water temperature is quick and constant, the structure is simple, and the manufacturing cost is reduced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic view of a prior art burner configuration;

FIG. 2 is a cross-sectional view of a prior art burner;

fig. 3 is a first schematic structural diagram of the heating device of the present invention;

FIG. 4 is a schematic structural view of a heating device according to the present invention;

FIG. 5 is a schematic view of the fire cover of the present invention;

fig. 6 is a cross-sectional view of the heating device of the present invention;

fig. 7 is a third schematic structural view of the heating device of the present invention;

fig. 8 is a schematic view of a part of the structure of the gas water heater of the present invention;

fig. 9 is a schematic view of a part of the structure of the gas water heater of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2 and 8, a combustion system provided in the prior art is a core component of a gas water heater, and it functions to generate high-temperature flue gas after combustion of gas entering a burner 1, the high-temperature flue gas heats a heat exchange pipe 33 of a heat exchanger 3, domestic water entering the heat exchange pipe 33 from a water inlet pipe 31 is heated by the high-temperature heat exchange pipe 33, and hot water for domestic needs flows out from a water outlet pipe 32. A combustion system comprises a shell 11, a plurality of rows of fire rows 13 arranged in parallel are arranged in the shell 11, an air inlet injection hole 12 is formed in the shell 11, when a combustor 1 is heated and combusted, the small fire state is usually one or two fire rows 13, even if the small fire state of one or two rows of fire is/are adopted, the minimum load is also more than 1.2KW, the water temperature in summer is higher, and the scald is easy. When the water temperature is high, two rows, three rows, four rows and multiple rows of flames are often used for combustion, and the flames are not in the center of the heat exchanger 3, so that the heat exchanger 3 is heated unevenly, the water temperature is constant and slow, and the service life of the heat exchanger 3 is shortened.

As shown in fig. 3 to 7, the utility model provides a heating device mainly uses in gas heater, lets in the gas and uses, through the less area of crossing fire of design, can realize the heating of small fire underload to the energy can be saved improves heating efficiency, and less area of crossing fire sets up at central point moreover, can be so that the heating is even, and the temperature constant speed is fast.

Further, the utility model provides a pair of heating device, including casing 2 and fire lid 21, casing 2 has well cavity, is provided with the passageway of ventilating in the cavity, is provided with two at least combustion areas that combustion area is inequality on the fire lid 21, lets in air and gas in the passageway of ventilating, and the gas that lets in further mixes in the passageway of ventilating, and the gas after the mixture takes place combustion reaction in two at least combustion areas.

In a preferred embodiment, the air and the fuel gas are introduced into the first combustion area and the second combustion area, the introduced gas is further mixed in the air passage, and the mixed gas generates a combustion reaction in the first combustion area and/or the second combustion area so as to control the size of the fire passing area of the fire cover 21. The combustion areas of the first combustion area and the second combustion area 1 are different, and the first combustion area is arranged at the central position of the fire cover 21, so that the heating is uniform during heating, and the low-load small fire heating can be realized.

Of course, it is understood that the at least two combustion zones may include three, four or more, etc., and the number of combustion zones is not specifically limited herein, but is only described in detail with reference to the above preferred embodiments.

Further, a partition structure is arranged on the fire cover 21, and the partition structure divides the fire cover 21 into at least two combustion areas. The at least two combustion zones are each contacted by gas and/or air to cause one or more of the at least two combustion zones to combust simultaneously or separately to achieve control of the overfire area of the different combustion zones or of all of the combustion zones.

Further, the partition structure comprises a partition 211, the fire cover 21 is provided with the partition 211, and the partition 211 divides the fire cover 21 into a first combustion area and a second combustion area, so that the fire area of the fire cover 21 is different. Of course, it is understood that the first combustion region and the second combustion region are integrally formed on the fire cover 21, that the first combustion region and the second combustion region are fixed on different fire covers 21, and that the first combustion region and the second combustion region are detachably mounted on the fire cover 21, so that the fire cover 21 has different combustion regions.

Of course, it is understood that the partition structure may be provided in other structures as long as the surface of the fire cover 21 can be partitioned into at least two combustion areas. The partition structure may be a stopper, a baffle, or the like, as long as the surface area of the fire cover 21 can be partitioned, and the specific form of the partition structure is not specifically limited herein.

In a preferred embodiment, the partition 211 is an annular structure and the first combustion zone is a circular combustion zone. Of course, it is understood that the first combustion area may also be set to be square, oval, diamond, etc., and the fire passing area of the first combustion area may be set according to the user's requirement, and for this reason, the shape of the first combustion area is not specifically limited herein. The first combustion area may be provided at the center of the fire cover 21, the second combustion area may be provided at another position of the fire cover 21, the fire cover 21 may have a square plate-like structure, and the area excluding the first combustion area may be the second combustion area, so that the first combustion area and the second combustion area control different heating power levels, respectively. Of course, it is understood that the first combustion area may be disposed at other positions of the fire cover 21, the first combustion area and the second combustion area form the surface area of the fire cover 21, and the location and specific shape of the first combustion area and the second combustion area are not particularly limited herein.

Further, the partition 211 is fixedly provided on the upper surface of the fire cover 21 such that the partition 211 is disposed to protrude from the upper surface of the fire cover 21. In other embodiments, the partition 211 may also be disposed on the lower surface of the fire cover 21, or the partition 211 may be flush with the fire cover 21. The partition 211 partitions the first and second combustion regions of the fire cover 21 so that the first and second combustion regions can be partitioned after the fire cover 21 is ignited. Of course, it is understood that according to the requirement of the user, the first combustion area and the second combustion area may be ignited simultaneously, or the first combustion area or the second combustion area alone may be ignited, and when the water temperature required by the user is not high, only the first combustion area may be ignited, so that the temperature set by the requirement is low. Further, the different combustion zones on the fire cover may be different materials, such as a first combustion zone of copper and a second combustion zone of stainless steel; or the first combustion zone has a higher copper content than the second combustion zone.

Further, a plurality of fire holes 212 are formed in the fire cover 21, and the fire holes 212 are arranged in an array on the fire cover 21. Through the fire holes 212 of the fire cover 21, the mixture of gas and air is burned at the fire holes 212, thereby achieving heating of the combustion area. If the temperature of the required water temperature is too high, all the fire holes 212 in all the fire passing areas of the fire cover 21 are uniformly combusted. Therefore, the heat exchanger can be uniformly heated, so that the water temperature can be quickly constant, the heat exchange time is short, and the user experience is improved.

Further, the case 2 has an opening, and the edge of the fire cover 21 is interference-fitted to the opening. Of course, it can be understood that the connection mode of the housing 2 and the opening is fixed connection, wherein the housing 2 and the fire cover 21 can be connected by a buckle, a screw, etc., as long as the housing 2 and the fire cover 21 can be fixedly connected.

As a preferred embodiment, the edge of the air outlet 222 of the first ejector tube 22 of the shell 2 is lower than the thickness of 1 fire cover 21 at the outer edge of the opening of the shell 2, the inner size of the shell 2 is slightly smaller than the outer size of the fire cover 21, and therefore when the fire cover 21 is installed, the fire cover 21 is pressed into the shell 2 in an interference mode, the lower surface of the fire cover 21 is tightly attached to the first ejector tube 22, and then the fire cover 21 can be fixed.

Further, the number of the breathing passages is the same as the number of the combustion zones, such that each breathing passage corresponds to each combustion zone, thereby achieving different temperatures through the overfire area combusting the different combustion zones. If the number of the combustion areas is three, the number of the ventilation channels is three; when the number of combustion areas is four, the number of ventilation channels is four, and the like, which are not specifically listed here. The utility model discloses use the burning area to be two, the air channel is two and exemplifies. The ventilation channel comprises a first ventilation channel and a second ventilation channel, the first ventilation channel is communicated with the first combustion area, and the second ventilation channel is communicated with the second combustion area, so that the fire passing area is controllable. The first ventilation channel is arranged in the hollow chamber of the housing 2, the first ventilation channel comprises a first injection pipe 22, and the first injection pipe 22 is communicated with the first combustion area. It is understood that the first ejector tube 22 forms a first vent channel, which is formed from the bottom of the housing 2 in the direction of the fire lid 21. The first injection pipe 22 is provided with an air inlet 221 and an air outlet 222, the air inlet 221 is arranged on the bottom surface of the shell 2, the air outlet 222 is attached to the bottom surface of the fire cover 21, the air outlet 222 is detachably connected with the partition 211, for example, a groove is formed on the partition 211, the air outlet 222 is inserted into the groove in a matched mode, or the air outlet 222 is connected with the partition 211 through other modes such as a buckle and a screw. The gas outlet 222 and the partition 211 are mutually matched in size and structure, so that the gas in the first injection pipe 22 enters the first combustion area through the first ventilation channel and is subjected to combustion reaction in the first combustion area.

Of course, it can be understood that the port of the first injection pipe 22 is provided with an adjusting structure, the diameter of the first injection pipe 22 is changed through the adjusting structure to control the fire passing area of the heating device, and the diameter of the first injection pipe 22 can be adjusted through the adjusting structure by a user to adjust the fire passing area.

Further, the second vent channel is communicated with a second injection pipe 23, and the second injection pipe 23 is arranged on the bottom surface of the shell. Of course, it can be understood that the second vent passage includes a hollow chamber except the first ejector tube 22, a third vent passage is formed in the second ejector tube 23, and the second vent passage is communicated with the third vent passage, that is, the second ejector tube 23 is communicated with the hollow chamber except the first ejector tube 22. As a preferred embodiment, the first ejector tube 22 is disposed in the hollow chamber; the second ejector pipe 23 is arranged on the bottom surface of the shell 2, so that the gas in the second ejector pipe 23 enters the second combustion area through the second ventilation channel, and is combusted and reacted in the second combustion area. The second injection pipe 23 protrudes out of the bottom surface of the shell 2, and an air inlet of the second injection pipe 23 is formed in the bottom surface of the shell 2.

As a preferred embodiment, the air required for combustion is replaced by primary and secondary air control in the prior art, and is supplemented to the position of the air inlet 221 of the first ejector pipe 22 and/or the pipe orifice of the second ejector pipe 23 for one time, that is, the fuel gas and/or air enters the ventilation channel from the air inlet 221 of the first ejector pipe 22 and/or the air inlet of the second ejector pipe 23, and is further mixed through the ventilation channel and then reaches the fire cover 21, and a combustion reaction occurs in a corresponding combustion area. Because gas and air have carried out further mixture in the ventilation channel before the burning, the mist is more even, more abundant burning easily, and flame can be in fire hole 212 department during the burning, and the flame height on combustor surface will reduce, can effectively reduce the distance of combustor and heat exchanger, reduces the size of whole water heater.

The heating device provided by the utility model designs the combustion of the small fire and the big fire into the combustion state of the inner ring fire and/or the outer ring fire. In summer, when the required water temperature is not high, only the gas entering the first injection pipe 22 in the hollow cavity participates in combustion. The fire passing area of the fire cover 21 corresponding to the first injection pipe 22 is less than 4% of the total fire passing area, and even smaller. Therefore, the heat generated during burning of the small fire is limited, the temperature rise of the water temperature is limited, the small fire in summer is not hot, and the user experience is good. The small fire passing area of the conventional burner 1 is different depending on the number of the combustion fire rows 13 and the total number of the fire rows 13. For example, a burner 1 with six rows of fire rows 13 burns one row of fire with a small fire, and its overfire area ratio is 1/6-16.7% and the two rows of fire is 33.3%. When spring and autumn needs higher water temperature, the first injection pipe 22 in the cavity of the combustor 1 is used for air inlet, the second injection pipe 23 is used for air inlet, the hollow cavity of the heating device shell uniformly reaches the fire cover 21, the needed fire power depends on the temperature requirement, and all fire holes 212 in all fire passing areas of the combustor 1 are uniformly combusted no matter the water temperature requirement is high or higher. Therefore, the heat exchanger 3 can be uniformly heated, so that the water temperature can be quickly constant, the heat exchange time is short, and the user experience is good. Meanwhile, the service life of the heat exchanger 3 can be prolonged due to the fact that the heat exchanger 3 is heated uniformly, and the heat exchanger 3 is the component which is most affected by the service life of the gas water heater, so that the service life of the gas water heater is prolonged.

The utility model provides a casing 2 among the heating device is first to draw and penetrate pipe 22 gas outlet 222 edge and be less than the thickness that 1 fire lid 21 of casing 2 opening part outward flange, and casing 2 internal dimension slightly is less than fire lid 21 external dimension, and when the installation like this with fire lid 21 interference impress inside casing 2, fire lid 21 lower surface and first draw and penetrate the pipe 22 up end and hug closely and can fix this fire lid 21. The fire passing area is controlled by the size of the inner hole of the injection pipe, if the fire passing area is large, the diameter of the hole of the first injection pipe 22 is designed to be a large point, and otherwise, the diameter is designed to be a small point. When the fire is small, only the fire cover in the partition 211 burns and the flame burns, and when the fire is large or large, the fire cover 21 burns due to fire. The utility model provides an air that heating device needs is once drawn the air inlet 221 of penetrating the pipe 22 and/or the air inlet department that penetrates the pipe 23 is once supplyed and targets in place to the second by original once, secondary accuse gas change. That is, in the gas and/or air got into the air passage from the air inlet 221 of first injection pipe 22 and/or the air inlet of second injection pipe 23, after further mixing through the air passage, reach fire lid 21, take place the combustion reaction in corresponding combustion area, because the air inlet 221 and/or the air inlet of second injection pipe 23 are located casing 21 terminal surface, can make enough air be injected into first injection pipe 22 and second injection pipe 23, cancel the cooling of original secondary air to flame, further improved flame temperature and then improved the thermal efficiency again.

As shown in fig. 8 and fig. 9, the present invention further provides a gas water heater, which comprises the heating device. The heat exchanger 3 is arranged above the heating device, the heat exchanger 3 is connected with a water inlet pipe 31 and a water outlet pipe 32, and the water inlet pipe 31 and the water outlet pipe 32 are communicated with a heat exchange pipe 33, so that cold water heated by the water inlet pipe 31 is heated by the heat exchange pipe 33 and then is discharged from the water outlet pipe 32.

The utility model provides a heating device and a gas water heater, a first combustion area and a second combustion area with different combustion areas are designed, when the heat is burnt in summer, the combustion area is small, the load is low, and the water is not hot in summer; when spring and autumn do not need big fire burning, the full area small fire burns, the heat exchanger 3 is heated evenly, the water temperature is quick and constant, the structure is simple, and the manufacturing cost is reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (14)

1. The heating device is characterized by comprising a shell and a fire cover, wherein the shell is provided with a hollow cavity, a ventilation channel is arranged in the hollow cavity, at least two combustion areas with different combustion areas are arranged on the fire cover, and the ventilation channel is communicated with the fire cover.

2. The heating device of claim 1, wherein a partition structure is provided on the fire cover, the partition structure dividing the fire cover into at least the two combustion zones.

3. The heating device of claim 2, wherein the dividing structure comprises a partition that divides the fire lid into at least the two combustion zones.

4. A heating device as claimed in claim 3, wherein the partition is of annular configuration.

5. The heating apparatus as claimed in claim 3 or 4, wherein the partition is provided on an upper surface of the fire cover.

6. The heating device according to any one of claims 1 to 4, wherein a plurality of fire holes are provided on the fire cover, and a plurality of the fire holes are provided in an array on the fire cover.

7. The heating device of claim 1, wherein the housing has an opening, and wherein an edge of the fire cover is an interference fit with the opening.

8. The heating device of any one of claims 2-4 or 7, wherein the vent channel comprises at least two vent channels, at least two vent channels being in one-to-one correspondence with at least two of the combustion zones.

9. The heating device of claim 8, wherein the vent passage comprises a first vent passage and a second vent passage, the at least two combustion zones comprising a first combustion zone and a second combustion zone, the first vent passage being in communication with the first combustion zone, the second vent passage being in communication with the second combustion zone.

10. The heating device of claim 9, wherein the hollow chamber is provided with a first ejector tube, the first ejector tube is in communication with the first vent passage, and the first ejector tube is in communication with the first combustion region.

11. The heating device according to claim 10, wherein the first ejector pipe is provided with an air inlet and an air outlet, the air inlet is arranged on the bottom surface of the shell, the air outlet is attached to the bottom surface of the fire cover, and the air outlet and the separation structure are correspondingly arranged so that the fuel gas in the first ejector pipe and the first combustion area can be subjected to combustion reaction.

12. The heating device according to claim 9, wherein the second vent passage is communicated with a second ejector pipe, and the second ejector pipe is disposed on a bottom surface of the housing.

13. The heating device of claim 12, wherein the second ejector pipe protrudes from the bottom surface of the housing, and the air outlet of the second ejector pipe is disposed on the bottom surface of the housing.

14. A gas water heater comprising a heat exchanger and a heating device as claimed in any one of claims 1 to 13, said heating device being disposed below said heat exchanger.

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