CN214148356U

CN214148356U - Heat exchanger and gas water heating equipment

Info

Publication number: CN214148356U
Application number: CN202022167338.XU
Authority: CN
Inventors: 卢楚鹏; 何意
Original assignee: Guangdong Vanward New Electric Co Ltd
Current assignee: Guangdong Vanward New Electric Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-09-07
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to a heat exchanger and gas water heating equipment, in the using process, low-temperature water is filled in a water storage cavity through a water inlet pipe or a water outlet pipe; the burner is started again, so that high-temperature flue gas enters the flue gas channel in the heat exchange piece from the combustion cavity, and the heat exchange piece is positioned in the water storage cavity, so that when the high-temperature flue gas enters the flue gas channel, the high-temperature flue gas can fully exchange heat with water in the water storage cavity, and the water temperature in the water storage cavity is effectively increased; when the water temperature in the water storage cavity reaches a proper temperature, the water is output through the water outlet pipe or the water inlet pipe, so that the problem that the bathing comfort degree of a user is influenced due to too low water temperature when the water valve is started for the first time is avoided. Meanwhile, the water storage cavity is arranged in the heat exchanger, so that when the heat exchanger is restarted after water cut off, low-temperature water flows into the water storage cavity to perform mixed heat exchange with the previous water, water temperature compensation is realized, the temperature stability of the flowing water is ensured, and the fluctuation problem of the water temperature in the use process is effectively solved.

Description

Heat exchanger and gas water heating equipment

Technical Field

The utility model relates to a hot water system technical field especially relates to heat exchanger and gas hot water system.

Background

Gas heater (circulation system model except) of selling on the existing market, in the use, close the bathing temperature before the water valve restart need can reach after a period of time, the reason is that: 1) after the water valve is closed, the residual heat of the heat exchanger continuously heats the stored water in the machine, so that the temperature of the stored water is higher than the set temperature, and the high-temperature stored water flows out firstly after the water valve is re-opened; 2) a certain amount of cold water needs to flow out in the process of re-opening the water valve until the inlet water temperature reaches a set value. Therefore, after the water valve is closed and restarted in the using process, the water temperature can reach the bathing temperature for a period of time, or the phenomenon of sudden cold and sudden hot appears, and the bathing comfort degree of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a first technical problem provide a heat exchanger, its temperature fluctuation problem that can solve the water use in-process effectively promotes user's bathing comfort level.

The utility model provides a second technical problem provide a gas hot-water heating equipment, its temperature fluctuation problem that can solve the water use in-process effectively promotes user's bathing comfort level.

The first technical problem is solved by the following technical scheme:

a heat exchanger, the heat exchanger comprising: the combustion chamber is formed in the first shell, and a first mounting hole communicated with the combustion chamber is formed in the first shell; the second shell is sleeved outside the first shell, a water storage cavity is formed between the second shell and the first shell, a water inlet pipe, a water outlet pipe and a second mounting hole communicated with the water storage cavity are arranged on the second shell, and the water inlet pipe and the water outlet pipe are both communicated with the water storage cavity; the heat exchange piece is arranged in the water storage cavity, a flue gas channel is arranged in the heat exchange piece, and two ends of the flue gas channel are respectively communicated with the first mounting hole and the second mounting hole.

The heat exchanger, compare produced beneficial effect with the background art: in the using process, the water storage cavity is filled with low-temperature water through the water inlet pipe or the water outlet pipe; the burner is started again, so that high-temperature flue gas enters the flue gas channel in the heat exchange piece from the combustion cavity, and the heat exchange piece is positioned in the water storage cavity, so that when the high-temperature flue gas enters the flue gas channel, the high-temperature flue gas can fully exchange heat with water in the water storage cavity, and the water temperature in the water storage cavity is effectively increased; when the water temperature in the water storage cavity reaches a proper temperature, the water is output through the water outlet pipe or the water inlet pipe, so that the problem that the bathing comfort degree of a user is influenced due to too low water temperature when the water valve is started for the first time is avoided. Meanwhile, the water storage cavity is arranged in the heat exchanger, so that when the heat exchanger is restarted after water cut off, low-temperature water flows into the water storage cavity to perform mixed heat exchange with the previous water, water temperature compensation is realized, the temperature stability of the flowing water is ensured, and the fluctuation problem of the water temperature in the use process is effectively solved. In addition, compare in traditional heat exchanger, this heat exchanger is from taking the water storage chamber, saves to need to add the water storage in addition and irritates, effectively reduces gas hot-water apparatus's spare part, simplifies the inside water route of gas hot-water apparatus, and the gas hot-water apparatus of being convenient for integrates, reduces the installation procedure.

In one embodiment, along the height direction of the second shell, one end of the water inlet pipe extends into the second shell to a depth h₁Is greater than the depth h of one end of the water outlet pipe extending into the second shell₂。

In one embodiment, a cooling cavity communicated with the water storage cavity is further formed between the second shell and the first shell, the cooling cavity is arranged around the periphery of the combustion cavity, one end of the water inlet pipe penetrates through the water storage cavity and extends into the cooling cavity, and one end of the water outlet pipe extends into the water storage cavity.

In one of them embodiment, first casing includes first bounding wall and installs the first end plate on the first bounding wall, the second casing includes the second bounding wall and installs the second end plate on the second bounding wall, the second bounding wall cover is established the outside of first bounding wall, first bounding wall with the second bounding wall forms the cooling chamber, first end plate the second end plate with the second bounding wall forms the water storage chamber, the cooling chamber is located the below in water storage chamber.

In one embodiment, a water discharge hole is formed in the pipe wall of the water inlet pipe and is communicated with the water storage cavity.

In one embodiment, the number of the drain holes is at least two, and the at least two drain holes are arranged at intervals along the length direction of the water inlet pipe.

In one embodiment, a first flange is arranged on the first shell, the first flange is arranged around the edge of the first mounting hole, and the heat exchange piece is fixedly connected to the first flange.

In one embodiment, a second flange is arranged on the second shell, the second flange is arranged around the edge of the second mounting hole, and the heat exchange piece is fixedly connected in the second flange.

In one embodiment, the heat exchanger further comprises a spoiler, a third mounting hole and a flow guide hole communicated with the water storage cavity are formed in the spoiler, the flow guide hole is formed in the edge of the third mounting hole and arranged around the third mounting hole, and the heat exchange piece penetrates through the spoiler by being inserted into the third mounting hole.

In one embodiment, the heat exchanger further comprises a flow equalizing piece, the flow equalizing piece is arranged between the first shell and the second shell, at least two flow equalizing holes are formed in the flow equalizing piece, and the water storage cavity is communicated with the cooling cavity through the flow equalizing holes.

The second technical problem is solved by the following technical solutions:

a gas water heating device comprises a burner and the heat exchanger, wherein the burner is used for burning and heating a combustion cavity.

Gas hot water equipment, compare produced beneficial effect with the background art: by adopting the heat exchanger, in the using process, the water storage cavity is filled with low-temperature water through the water inlet pipe or the water outlet pipe; the burner is started again, so that high-temperature flue gas enters the flue gas channel in the heat exchange piece from the combustion cavity, and the heat exchange piece is positioned in the water storage cavity, so that when the high-temperature flue gas enters the flue gas channel, the high-temperature flue gas can fully exchange heat with water in the water storage cavity, and the water temperature in the water storage cavity is effectively increased; when the water temperature in the water storage cavity reaches a proper temperature, the water is output through the water outlet pipe or the water inlet pipe, so that the problem that the bathing comfort degree of a user is influenced due to too low water temperature when the water valve is started for the first time is avoided. Meanwhile, the water storage cavity is arranged in the heat exchanger, so that when the heat exchanger is restarted after water cut off, low-temperature water flows into the water storage cavity to perform mixed heat exchange with the previous water, water temperature compensation is realized, the temperature stability of the flowing water is ensured, and the fluctuation problem of the water temperature in the use process is effectively solved. In addition, compare in traditional heat exchanger, this heat exchanger is from taking the water storage chamber, saves to need to add the water storage in addition and irritates, effectively reduces gas hot-water apparatus's spare part, simplifies the inside water route of gas hot-water apparatus, and the gas hot-water apparatus of being convenient for integrates, reduces the installation procedure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

FIG. 1 is an exploded view of a heat exchanger configuration according to one embodiment;

FIG. 2 is a sectional view of a heat exchanger according to an embodiment;

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

FIG. 4 is a schematic diagram of the heat exchanger water flow in one embodiment.

Reference numerals:

100. the heat exchanger comprises a heat exchanger 110, a first shell body 111, a first enclosing plate 1111, an expanding edge 112, a first end plate 1121, a first mounting hole 1122, a first flanging 113, a combustion cavity 120, a second shell body 121, a second enclosing plate 1211, a third flanging 122, a second end plate 1221, a second mounting hole 1222, a second flanging 130, a heat exchange member 131, a flue gas channel 140, a flow disturbing member 141, a third mounting hole 142, a flow guide hole 143, a flow guide hole group 144, a fourth mounting hole 145, a support part 146, a convection space 150, a flow equalizing member 151, a flow equalizing hole 160, a water inlet pipe 161, a water outlet pipe 170, a water outlet pipe 180, a water storage cavity 190 and a temperature reduction cavity.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In one embodiment, referring to fig. 1 and fig. 2, a heat exchanger 100, the heat exchanger 100 includes: a first housing 110, a second housing 120, and a heat exchange member 130. A combustion chamber 113 is formed in the first housing 110, and a first mounting hole 1121 communicating with the combustion chamber 113 is formed in the first housing 110. The second housing 120 is sleeved outside the first housing 110, a water storage cavity 180 is formed between the second housing 120 and the first housing 110, and the second housing 120 is provided with a water inlet pipe 160, a water outlet pipe 170 and a second mounting hole 1221 communicated with the water storage cavity 180. The water inlet pipe 160 and the water outlet pipe 170 are both communicated with the water storage cavity 180. The heat exchange element 130 is arranged in the water storage cavity 180, and a smoke channel 131 is arranged in the heat exchange element 130. Two ends of the smoke channel 131 are respectively communicated with the first mounting hole 1121 and the second mounting hole 1221.

In the heat exchanger 100, in the use process, the low-temperature water is filled in the water storage cavity 180 through the water inlet pipe 160 or the water outlet pipe 170; the burner is started again, so that the high-temperature flue gas enters the flue gas channel 131 in the heat exchange piece 130 from the combustion cavity 113, and the heat exchange piece 130 is positioned in the water storage cavity 180, so that when the high-temperature flue gas enters the flue gas channel 131, the high-temperature flue gas can fully exchange heat with the water in the water storage cavity 180, and the water temperature in the water storage cavity 180 is effectively improved; when the temperature of the water in the water storage cavity 180 reaches a proper temperature, the water is output through the water outlet pipe 170 or the water inlet pipe 160, so that the problem that the bathing comfort degree of a user is influenced due to the fact that the temperature of the water is too low when the water valve is started for the first time is avoided. Meanwhile, because the heat exchanger 100 is internally provided with the water storage cavity 180, when the water is cut off and restarted, low-temperature water flows into the water storage cavity 180 to perform mixed heat exchange with the previous water, so that the water temperature compensation is realized, the temperature stability of the flowing water is ensured, and the fluctuation problem of the water temperature in the use process is effectively solved. In addition, compare in traditional heat exchanger 100, this heat exchanger 100 is from taking water storage chamber 180, saves to need to add the water storage in addition and irritates, effectively reduces gas hot-water apparatus's spare part, simplifies the inside water route of gas hot-water apparatus, and the gas hot-water apparatus of being convenient for integrates, reduces the installation procedure.

It should be noted that, there are various communication modes between the two ends of the flue gas channel 131 and the first mounting hole 1121 and the second mounting hole 1221, for example: one end of the heat exchange member 130 is inserted into the first mounting hole 1121, and the other end of the heat exchange member 130 is inserted into the second mounting hole 1221; or, one end of the heat exchanging element 130 is connected to the edge of the first mounting hole 1121, and the other end of the heat exchanging element 130 is connected to the edge of the second mounting hole 1221, where the connection manner of the two elements may be welding, bolting, and integrally forming (that is, the heat exchanging element 130 and the first housing 110 are integrally formed, and/or the heat exchanging element 130 and the second housing 120 are integrally formed); alternatively, one end of the heat exchanger 130 may be connected, and the other end of the heat exchanger 130 may be inserted.

Alternatively, the cross-sectional shape of the flue gas channel 131 may be designed as an oval, a circle, a rectangle, a square, etc., although the cross-sectional shape of the flue gas channel 131 may also be designed as a non-regular shape.

Specifically, referring to fig. 2, the water inlet pipe 160 and the water outlet pipe 170 are respectively disposed on the same side of the second housing 120, so that the radial dimension of the whole machine can be controlled conveniently, the appearance of the whole machine is designed to be small and round, and the requirements of users on miniaturization and compactness of products can be met.

Further, referring to fig. 2, a first flange 1122 is disposed on the first housing 110. The first flange 1122 is disposed around the edge of the first mounting hole 1121, and the heat exchanging element 130 is inserted into the first flange 1122. Thus, in the assembling process, one end of the heat exchanging element 130 is inserted into the first flange 1122, so that not only the communication between the smoke channel 131 and the first mounting hole 1121 is realized, but also the connection between the heat exchanging element 130 and the first housing 110 is realized.

Specifically, in the connection between the first turned-over edge 1122 and the heat exchanging member 130, solder paste is coated between the heat exchanging member 130 and the first turned-over edge 1122; after coating, putting the two into a welding furnace together for welding to realize the sealing connection of the two.

In one embodiment, referring to fig. 2, the second shell 120 is provided with a second flange 1222. The second flange 1222 is disposed around the edge of the second mounting hole 1221, and the heat exchanging element 130 is inserted into the second flange 1222, so that, as such, an easy mounting of the heat exchanging element 130 on the second housing 120 is ensured. In addition, in the connection between the second flange 1222 and the heat exchanging member 130, solder paste is applied between the heat exchanging member 130 and the second flange 1222; after coating, the two are put into a welding furnace together for welding, thereby realizing the sealing connection of the two.

In one embodiment, referring to fig. 4, along the height direction of the second housing 120, one end of the water inlet pipe 160 extends into the second housing 120 to a depth h₁Is greater than the depth h of one end of the water outlet pipe 170 extending into the second shell 120₂. Therefore, one end of the water inlet pipe 160 is inserted deeper than one end of the water outlet pipe 170, and a height position difference exists between the two ends, so that the flow path of water in the water storage cavity 180 is prolonged, sufficient heat exchange between the water and the heat exchange member 130 is ensured, and the heat exchange efficiency of the heat exchanger 100 is effectively improved.

In order to facilitate understanding of the height direction of the second housing 120, taking fig. 4 as an example, the height direction of the second housing 120 is a direction indicated by an arrow S in fig. 4.

Further, referring to fig. 2, a cooling cavity 190 communicated with the water storage cavity 180 is formed between the second housing 120 and the first housing 110. The cooling chamber 190 is disposed around the periphery of the combustion chamber 113. One end of the water inlet pipe 160 penetrates through the water storage cavity 180 and extends into the cooling cavity 190. One end of the water outlet pipe 170 extends into the water storage cavity 180. So, water carries to cooling chamber 190 in through inlet tube 160, surrounds the 113 modes of burning chamber and flows, with the outside of first casing 110 fully contact the heat transfer, effectively reduces the outside surface temperature of first casing 110, so, compare in conventional equipment, this heat exchanger 100 encloses into cooling chamber 190 through enclosing between first casing 110 and the second casing 120, need not to coil the coil pipe of too many turns, effectively solves the too big problem of pipeline overlength water resistance. Meanwhile, through the heat exchanger 100, an integral water cooling wall is effectively formed, damage to electronic elements is reduced, and the service life of the gas water heating equipment is prolonged.

It should be noted that the arrangement of the cooling chamber 190 around the periphery of the combustion chamber 113 should be understood as follows: the cooling chamber 190 surrounds the entire periphery of the combustion chamber 113, i.e., 360 ° surrounds the combustion chamber 113, please refer to fig. 2; alternatively, the temperature reducing chamber 190 surrounds a portion of the periphery of the combustion chamber 113, i.e., the temperature reducing chamber 190 does not surround the combustion chamber 113 360 °. At this time, when the second housing 120 is sleeved outside the first housing 110, at least one outer side surface of the first housing 110 is attached to at least one inner side surface of the second housing 120, so that the cooling cavity 190 is or is approximately in a "C" shape.

Of course, in other embodiments, only the water storage cavity 180 is formed between the second housing 120 and the first housing 110, at this time, the outside of the first housing 110 is in an exposed state, and at this time, the cavity wall of the combustion cavity 113 may be cooled by winding a cooling pipe around the outside of the first housing 110.

Further, referring to fig. 4, the first housing 110 includes a first enclosure 111 and a first end plate 112 mounted on the first enclosure 111. The second housing 120 includes a second enclosure 121 and a second end plate 122 mounted on the second enclosure 121. The second shroud 121 fits over the exterior of the first shroud 111. The first enclosure 111 and the second enclosure 121 form a cooling chamber 190. The first end plate 112, the second end plate 122 and the second enclosing plate 121 form a water storage cavity 180, and the cooling cavity 190 is located below the water storage cavity 180. Therefore, the first shell 110 and the second shell 120 are both formed by enclosing plates and end plates, and in the assembling process, the second enclosing plate 121 is sleeved outside the first enclosing plate 111, so that the assembly of the cooling cavity 190 and the water storage cavity 180 can be formed.

It should be noted that both the water inlet pipe 160 and the water outlet pipe 170 can be arranged on the second enclosing plate 121; may also be provided on the second end plate 122; of course, the inlet pipe 160 may also be provided on the second enclosing plate 121, the outlet pipe 170 on the second end plate 122, etc. Meanwhile, a second mounting hole 1221 is provided on the second end plate 122, and a first mounting hole 1121 is provided on the first end plate 112.

Specifically, referring to fig. 1, the water inlet tube 160 and the water outlet tube 170 are both disposed on the second enclosing plate 121, and one end of the water inlet tube 160 passes through the water storage cavity 180 and extends into the cooling cavity 190. Therefore, the water inlet pipe 160 and the water outlet pipe 170 are ensured to be arranged in the same direction, so that the heat exchanger 100 is small and compact in appearance, and is easier to reasonably match with other parts when being applied to the whole machine, and the whole machine is more attractive.

Optionally, the first end plate 112 is connected to the first enclosing plate 111 by bolting, clamping, welding, integral molding, or the like. Meanwhile, the second end plate 122 is connected to the second surrounding plate 121 by bolts, clamping, welding, or integrally molding. Wherein, the integrated molding mode can adopt the processes of extrusion, casting, press fitting, injection molding and the like.

In one embodiment, referring to fig. 1, the first enclosing plate 111 is provided with a flared edge 1111. The second enclosing plate 121 is provided with a third flange 1211. When the second surrounding plate 121 is sleeved outside the first surrounding plate 111, the third flange 1211 abuts against the expanded edge 1111, so that the first shell 110 and the second shell 120 are in sealing fit, and the cooling cavity 190 has a good sealing effect.

Of course, in other embodiments, only the first enclosing plate 111 is provided with the expanded edge 1111, and when the second enclosing plate 121 is sleeved outside the first enclosing plate 111, one end of the second enclosing plate 121 abuts against the expanded edge 1111; alternatively, the first panel 111 is not provided with the expanded edge 1111, the second panel 121 is provided with a third turned edge 1211 turned inwards, and when the second panel 121 is sleeved outside the first panel 111, the third turned edge 1211 abuts against the side surface of the first panel 111.

In one embodiment, referring to fig. 2, the wall of the water inlet pipe 160 is provided with a water outlet hole 161. The water discharge hole 161 is communicated with the water storage chamber 180, so that water can be discharged from the side of the water inlet pipe 160 into the water storage chamber 180 through the water discharge hole 161, and water can be introduced into the water storage chamber 180.

It should be noted that the communication between the drain hole 161 and the water storage cavity 180 is understood as: the drain hole 161 is directly communicated with the water storage cavity 180, that is, the drain hole 161 is positioned in the water storage cavity 180; or, the drainage hole 161 is indirectly communicated with the water storage cavity 180, when the first casing 110 and the second casing 120 further enclose the cooling cavity 190, the drainage hole 161 is located in the cooling cavity 190, and at this time, the drainage hole 161 is indirectly communicated with the water storage cavity 180 through the cooling cavity 190.

Further, referring to fig. 2, at least two drainage holes 161 are formed, and the at least two drainage holes 161 are spaced apart along the length direction of the water inlet pipe 160. When water in the water storage chamber 180 flows backwards to the water inlet pipe 160, the water level in the water storage chamber 180 is lower than the water discharge hole 161 located at the top, and a part of the water discharge hole 161 is exposed, so that the pressure in the water inlet pipe 160 is equal to the water level air, the siphon force in the water inlet pipe 160 is damaged, and thus, the water in the water storage chamber 180 is effectively prevented from flowing backwards by arranging the water discharge hole 161 at intervals.

In one embodiment, referring to fig. 2, the heat exchanger 100 further includes a spoiler 140, the spoiler 140 is provided with a third mounting hole 141 and a flow guiding hole 142 communicating with the water storage cavity 180, the flow guiding hole 142 is disposed at an edge of the third mounting hole 141 and is disposed around the third mounting hole 141, and the heat exchanging member 130 is disposed through the spoiler 140 by being inserted into the third mounting hole 141. Therefore, in the using process, the heat exchange device is integrally arranged in the water storage cavity 180; then the flue gas channel 131 is communicated with the combustion cavity 113; after the water storage cavity 180 is assembled, water flows into the water storage cavity 180; then, the burner is started, so that the high temperature flue gas enters the flue gas channel 131 in the heat exchange member 130 from the combustion chamber 113. Since the spoiler 140 is located in the water storage cavity 180, when the water flows in the water storage cavity 180, the water flows into the flow guide hole 142 along the surface of the spoiler 140 under the flow blocking effect of the spoiler 140. And the diversion holes 142 are formed on the edge of the third mounting hole 141 and arranged around the third mounting hole 141, so that when water flows out of the diversion holes 142, the water flows along the outer wall of the heat exchange member 130 and washes the outer wall of the heat exchange member 130, heat exchange between the enhanced water and the heat exchange member 130 is performed, and the heat exchange efficiency is effectively improved.

It should be noted that, when the heat exchanging member 130 is inserted into the third mounting hole 141, it should be understood that: the cross-sectional dimension of the outer wall of the heat exchanging element 130 is matched with the dimension of the third mounting hole 141, that is, there is no excessive gap when the heat exchanging element 130 is inserted into the third mounting hole 141, so that water flows out of the water storage cavity 180 along with the heat exchanging element 130. Meanwhile, the flow guide hole 142 is disposed at the edge of the third mounting hole 141, which is to be understood as follows: the third installation hole 141 is communicated with the guide hole 142 to form the same hole structure, so that the size of the third installation hole 141 is increased. When the heat exchanging member 130 is inserted into the third mounting hole 141, a certain gap is formed between the heat exchanging member 130 and the wall of the third mounting hole 141, the gap is a flow guiding hole 142, and at this time, water flows out from the gap.

Further, referring to fig. 2, there are at least two spoiler 140. At least two spoilers 140 are spaced apart from one another. Convection space 146 is formed between two adjacent spoilers 140, and heat transfer member 130 is arranged by penetrating through each layer of spoilers 140 by being inserted into third mounting hole 141. Therefore, when the heat exchange device is installed in the water storage cavity 180, the two flow disturbing pieces 140 stacked mutually can divide the water storage cavity 180 into the convection space 146 with a plurality of smaller spaces, and when the water flow in the water storage cavity 180 flows into the convection space 146, the water flow speed can be improved to a certain extent, so that the convection system of the water flow is improved, and the heat exchange efficiency in the water storage cavity 180 is accelerated. The size of the space of the convection space 146 is determined according to the actual water flow.

It should be noted that, in this embodiment, there are two relative spacing manners of spoiler 140: first, the spoiler 140 and the spoiler 140 are parallel to each other and spaced apart from each other; second, the spoiler 140 and the spoiler 140 are disposed at an intersecting interval.

Specifically, referring to fig. 2, the spoiler 140 and the spoiler 140 are spaced apart from each other in parallel.

Further, referring to fig. 2, a plurality of third mounting holes 141 and a plurality of flow guiding holes 142 are formed on the spoiler 140. The edge of one part of the third mounting holes 141 is provided with a diversion hole 142, and between two adjacent spoiler 140, the diversion hole 142 on one spoiler 140 and the diversion hole 142 on the other spoiler 140 are distributed in a staggered manner. When the water flows into the water storage chamber 180, the water flows through the at least two spoiler 140 in sequence. Because the diversion holes 142 on two adjacent spoilers 140 are distributed in a staggered manner, when water flows out from the diversion hole 142 on one of the spoilers 140, the water does not directly flow out from the diversion hole 142 on the other spoiler 140, but flows to the diversion hole 142 along the surface of the spoiler 140 and then flows out from the diversion hole 142, so that the water forms a circuitous water path, the mobility of the water is improved, a flow stagnation area formed by the stagnation of the water is reduced, and the heat exchange efficiency between the water and the heat exchange member 130 is improved. Meanwhile, the gasification phenomenon caused by overhigh local water temperature is effectively prevented.

It should be noted that the diversion hole 142 is formed on the edge of a part of the third mounting hole 141, and it should be understood that: the guiding hole 142 is formed on the edge of one portion of the third mounting hole 141, and the guiding hole 142 is not formed on the edge of the other portion of the third mounting hole 141. Thus, the diversion holes 142 of two adjacent spoilers 140 can be ensured to be distributed in a staggered manner. Meanwhile, when the diversion holes 142 are formed in the edges of all the third mounting holes 141, the water flow is prevented from flowing along the outer wall of the heat exchange member 130.

It should be further noted that, between two adjacent spoiler 140, the diversion holes 142 on both sides are distributed in a staggered manner, which is not particularly limited in this embodiment, and only needs to satisfy that the water flow flows in a non-linear and circuitous manner under the action of the spoiler 140. Such as: the flow guide holes 142 on one of the spoiler 140 are concentrated in the middle of the spoiler 140, and the flow guide holes 142 on the other spoiler 140 are dispersed around the spoiler 140, at this time, the flow direction of the water flow is from the middle to the periphery, or from the periphery to the middle; or, the flow guide holes 142 of one of the spoilers 140 are concentrated on the right side of the spoiler 140, and the flow guide holes 142 of the other spoiler 140 are concentrated on the left side of the spoiler 140, at this time, the flow direction of the water flow is from the left side to the right side, or from the right side to the left side; or, the diversion holes 142 on both sides may be crossed and dislocated.

In one embodiment, referring to fig. 3, the hole wall of the third mounting hole 141 having the guiding hole 142 is provided with a supporting portion 145. The supporting portion 145 abuts against the heat exchanging member 130. Because the edge of the third mounting hole 141 is provided with the diversion hole 142, therefore, the aperture of the third mounting hole 141 can be enlarged, when the heat exchanging element 130 is inserted into the third mounting hole 141, a certain gap can occur, so, the supporting part 145 is arranged on the hole wall of the third mounting hole 141, and the supporting part 145 is abutted against the outer wall of the heat exchanging element 130, so that the heat exchanging element 130 is stably supported, the uneven gap between the heat exchanging element 130 and the diversion hole 142 caused by the deviation of the heat exchanging element 130 is reduced, and the uniform flowing of water flowing out of the diversion hole 142 along the outer wall of the heat exchanging element 130 is ensured.

Specifically, referring to fig. 3, there are two supporting portions 145, and the two supporting portions 145 are respectively disposed on the hole wall of the third mounting hole 141 symmetrically about the center of the third mounting hole 141. The mounting manner of the support portion 145 on the hole wall of the third mounting hole 141 is an integral forming manner, welding, clamping, threaded connection, or the like.

In one embodiment, referring to fig. 2, the plurality of flow guiding holes 142 form a flow guiding hole group 143 on the spoiler 140. Between two adjacent spoilers 140. The guide hole group 143 on one of the spoiler 140 and the guide hole group 143 on the other spoiler 140 are spaced apart, that is, the guide hole group 143 on one of the spoiler 140 and the guide hole group 143 on the other spoiler 140 are staggered left and right. When water flows into the water storage cavity 180, the water flows between two adjacent spoilers 140 from left to right; or, the water flows from right to left, so that the heat exchange efficiency between the water flow and the heat exchange member 130 is effectively improved.

In one embodiment, referring to fig. 2, a fourth mounting hole 144 is formed on the spoiler 140. The fourth mounting hole 144 is used for inserting the water inlet pipe 160, so that one end of the water inlet pipe 160 can extend into the cooling chamber 190, and the low-temperature water can be stably fed into the cooling chamber 190 through the water inlet pipe 160.

It should be noted that the water inlet pipe 160 of the present embodiment is a longer pipe, and during the assembling process, the water inlet pipe 160 is installed on the second housing 120; the water inlet pipe 160 is inserted into the fourth mounting hole 144, so that the water inlet pipe 160 penetrates through the heat exchanging device, thereby ensuring that one end of the water inlet pipe 160 can extend into the cooling chamber 190.

In one embodiment, referring to fig. 2, the heat exchanger 100 further includes a flow equalizing member 150, the flow equalizing member 150 is disposed between the first casing 110 and the second casing 120, at least two flow equalizing holes 151 are disposed on the flow equalizing member 150, and the water storage cavity 180 is communicated with the cooling cavity 190 through the flow equalizing holes 151. Therefore, before water flows into the water storage cavity 180, the water flow is blocked by the flow equalizing part 150, so that the water flow flows along the surface of the flow equalizing part 150 and flows into the water storage cavity 180 from the at least two flow equalizing holes 151, the water flow flowing into the water storage cavity 180 is uniformly dispersed, and the low-temperature water is fully mixed with the water in the water storage cavity 180.

Optionally, the connection manner of the flow equalizing member 150 between the first casing 110 and the second casing 120 is clamping, welding, bolting, pinning, or the like.

Further, referring to fig. 2, at least two flow equalizing holes 151 are circumferentially spaced around the spoiler 140, so as to increase the dispersion degree of the water flow and further ensure uniform mixing of the water flow in the water storage cavity 180.

In one embodiment, referring to fig. 1 and fig. 2, a gas-fired water heating apparatus includes a burner and the heat exchanger 100 in any of the above embodiments, wherein the burner is used for heating the combustion chamber 113 by combustion.

In the gas water heating device, the heat exchanger 100 is adopted, and in the use process, low-temperature water is filled in the water storage cavity 180 through the water inlet pipe 160 or the water outlet pipe 170; the burner is started again, so that the high-temperature flue gas enters the flue gas channel 131 in the heat exchange piece 130 from the combustion cavity 113, and the heat exchange piece 130 is positioned in the water storage cavity 180, so that when the high-temperature flue gas enters the flue gas channel 131, the high-temperature flue gas can fully exchange heat with the water in the water storage cavity 180, and the water temperature in the water storage cavity 180 is effectively improved; when the temperature of the water in the water storage cavity 180 reaches a proper temperature, the water is output through the water outlet pipe 170 or the water inlet pipe 160, so that the problem that the bathing comfort degree of a user is influenced due to the fact that the temperature of the water is too low when the water valve is started for the first time is avoided. Meanwhile, because the heat exchanger 100 is internally provided with the water storage cavity 180, when the water is cut off and restarted, low-temperature water flows into the water storage cavity 180 to perform mixed heat exchange with the previous water, so that the water temperature compensation is realized, the temperature stability of the flowing water is ensured, and the fluctuation problem of the water temperature in the use process is effectively solved. In addition, compare in traditional heat exchanger 100, this heat exchanger 100 is from taking water storage chamber 180, saves to need to add the water storage in addition and irritates, effectively reduces gas hot-water apparatus's spare part, simplifies the inside water route of gas hot-water apparatus, and the gas hot-water apparatus of being convenient for integrates, reduces the installation procedure.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A heat exchanger, characterized in that the heat exchanger (100) comprises:

the fuel gas burner comprises a first shell (110), wherein a combustion cavity (113) is formed in the first shell (110), and a first mounting hole (1121) communicated with the combustion cavity (113) is formed in the first shell (110);

the second shell (120), the second shell (120) is sleeved outside the first shell (110), a water storage cavity (180) is formed between the second shell (120) and the first shell (110), the second shell (120) is provided with a water inlet pipe (160), a water outlet pipe (170) and a second mounting hole (1221) communicated with the water storage cavity (180), and the water inlet pipe (160) and the water outlet pipe (170) are both communicated with the water storage cavity (180);

the heat exchange piece (130) is arranged in the water storage cavity (180), a smoke channel (131) is arranged in the heat exchange piece (130), and two ends of the smoke channel (131) are respectively communicated with the first mounting hole (1121) and the second mounting hole (1221).

2. The heat exchanger according to claim 1, wherein the inlet pipe (160) has one end extending into the second housing (120) by a depth h in a height direction of the second housing (120)₁Is larger than the depth h of one end of the water outlet pipe (170) extending into the second shell (120)₂。

3. The heat exchanger according to claim 2, wherein a cooling cavity (190) communicated with the water storage cavity (180) is further formed between the second housing (120) and the first housing (110), the cooling cavity (190) is arranged around the periphery of the combustion cavity (113), one end of the water inlet pipe (160) penetrates through the water storage cavity (180) and extends into the cooling cavity (190), and one end of the water outlet pipe (170) extends into the water storage cavity (180).

4. The heat exchanger according to claim 3, wherein the first casing (110) comprises a first enclosing plate (111) and a first end plate (112) arranged on the first enclosing plate (111), the second casing (120) comprises a second enclosing plate (121) and a second end plate (122) arranged on the second enclosing plate (121), the second enclosing plate (121) is sleeved outside the first enclosing plate (111), the cooling cavity (190) is formed between the first enclosing plate (111) and the second enclosing plate (121), the first end plate (112), the second end plate (122) and the second enclosing plate (121) form the water storage cavity (180), and the cooling cavity (190) is located below the water storage cavity (180).

5. The heat exchanger according to claim 1, wherein a water drainage hole (161) is formed in the wall of the water inlet pipe (160), and the water drainage hole (161) is communicated with the water storage cavity (180).

6. The heat exchanger according to claim 5, wherein the drain holes (161) are at least two, and at least two drain holes (161) are spaced apart along a length direction of the inlet pipe (160).

7. The heat exchanger according to any one of claims 1 to 6, wherein a first flange (1122) is provided on the first shell (110), the first flange (1122) is provided around an edge of the first mounting hole (1121), and the heat exchanging element (130) is fixedly connected to the first flange (1122); and/or the like, and/or,

the second shell (120) is provided with a second flange (1222), the second flange (1222) is arranged around the edge of the second mounting hole (1221), and the heat exchange piece (130) is fixedly connected to the second flange (1222).

8. The heat exchanger according to any one of claims 1 to 6, wherein the heat exchanger (100) further comprises a spoiler (140), a third mounting hole (141) and a flow guide hole (142) communicated with the water storage cavity (180) are formed in the spoiler (140), the flow guide hole (142) is formed in an edge of the third mounting hole (141) and is arranged around the third mounting hole (141), and the heat exchanging member (130) is inserted into the third mounting hole (141) and is arranged to penetrate through the spoiler (140).

9. The heat exchanger according to claim 3 or 4, characterized in that the heat exchanger (100) further comprises a flow equalizing member (150), the flow equalizing member (150) is arranged between the first shell (110) and the second shell (120), at least two flow equalizing holes (151) are arranged on the flow equalizing member (150), and the water storage cavity (180) is communicated with the cooling cavity (190) through the flow equalizing holes (151).

10. A gas-fired water heating apparatus, characterized by comprising a burner for combustion heating of the combustion chamber (113) and a heat exchanger (100) according to any one of claims 1-9.