CN219735626U - Heat exchanger assembly and gas equipment - Google Patents

Abstract

The utility model discloses a heat exchanger assembly and a gas device, wherein the heat exchanger assembly comprises: the heat exchanger comprises a heat exchanger body, wherein the heat exchanger body is provided with a first channel and a second channel, the first channel and the second channel are transversely distributed and are arranged in parallel, an opening at the upper end of the first channel is formed into an air inlet, an opening at the upper end of the second channel is formed into an air outlet, the lower end of the first channel is communicated with the lower end of the second channel through a communication channel, and a heat exchange tube is arranged in at least one of the first channel and the second channel. The heat exchanger assembly provided by the embodiment of the utility model is beneficial to reducing transverse radiation of heat and energy loss.

Description

Heat exchanger assembly and gas equipment

The utility model is divided into a publication number of 2022-04-29, a publication number of 202221056998.3 and a publication name of gas equipment.

Technical Field

The utility model relates to the technical field of water heaters, in particular to a heat exchanger assembly and gas equipment.

Background

In some related technologies, the outlet smoke temperature of the gas water heater is about 160 ℃, and the high-temperature smoke is directly discharged outside, so that part of energy is not utilized, and a certain waste is caused.

In other related technologies, the flue gas energy utilization rate is improved by setting secondary heat exchange, however, the efficiency of the secondary heat exchange is still lower, and the visual size of the gas water heater is larger due to the addition of the secondary heat exchanger, so that the gas water heater is not beneficial to user experience.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a gas plant which can improve the energy utilization and overall efficiency.

The utility model also provides a heat exchanger assembly.

According to an embodiment of the present utility model, a gas apparatus includes: the shell, the shell has first heat transfer cavity and the second heat transfer cavity that is linked together, be equipped with in the first heat transfer cavity along vertically spaced apart combustor and first heat exchanger, the combustor with form the combustion area between the first heat exchanger, be equipped with the second heat exchanger in the second heat transfer cavity, wherein, at least a portion of second heat transfer cavity is located the combustion area is along one side of horizontal direction, and with the combustion area passes through the division wall and separates.

According to the gas equipment provided by the embodiment of the utility model, the second heat exchange chamber is arranged on one side of the first heat exchange chamber in the horizontal direction, the separation wall separates the combustion area from the second heat exchange chamber, and the heat of the combustion area is conducted to the second heat exchange chamber through the separation wall, so that the energy utilization rate is obviously improved by utilizing the cooperative cooperation of the double heat exchange paths, the heat waste is avoided, the efficiency of the whole equipment is increased, the effect of reducing the gas consumption is further achieved, the exhaust temperature is reduced, and the vertical height of the gas equipment is reduced, so that the installation requirement of a smaller space is met.

In addition, the gas apparatus according to the above embodiment of the present utility model may have the following additional technical features:

according to some embodiments of the utility model, the second heat exchange chamber comprises a first channel, an upper portion of the first heat exchange chamber is communicated with an upper portion of the first channel, a lower portion of the first channel is provided with an outlet, and a bottom of the first heat exchange chamber is provided with an air inlet.

According to some embodiments of the utility model, the lower end of the first channel is below the combustion face of the burner.

According to some embodiments of the utility model, the first heat exchange chamber has a dimension in a first horizontal direction that is greater than a dimension in a second horizontal direction, the second heat exchange chamber being disposed on a side of the combustion zone in the second horizontal direction, the first horizontal direction being perpendicular to the second horizontal direction.

According to some embodiments of the utility model, the first heat exchange chamber and the second heat exchange chamber are arranged along a second horizontal direction, and a projection of the combustion area along the second horizontal direction falls within a projection range of the second heat exchange chamber.

According to some embodiments of the utility model, the partition wall is a partition plate, or the partition wall includes a plurality of partition plates, each of the partition plates has a mounting surface extending in a vertical direction, and the plurality of partition plates are attached and connected by the mounting surface.

According to some embodiments of the utility model, the partition plate is a sheet metal part or a plastic injection molding part and has reinforcing ribs.

According to some embodiments of the utility model, the housing comprises a first housing, a second housing and a top cover, wherein the top cover is covered above the first housing and the second housing, the partition wall is arranged between the first housing and the second housing, so that the partition wall and the first housing define the first heat exchange chamber, the second housing define the second heat exchange chamber, and a communication port for communicating the first heat exchange chamber and the second heat exchange chamber is defined between the partition wall and the second housing and the top cover.

According to some embodiments of the utility model, the partition wall is a partition plate, and the first housing and the second housing are respectively connected to the partition plate; or, the partition wall comprises a first partition plate and a second partition plate, the first partition plate is connected with the first shell, the second partition plate is connected with the second shell, and the first partition plate is connected with the second partition plate through a fastener.

According to some embodiments of the utility model, the top cover has a smoke collecting channel, a portion of which is located above the first heat exchange chamber and another portion of which is located above the second heat exchange chamber and communicates with an outlet of the second heat exchange chamber.

According to some embodiments of the utility model, the second heat exchange chamber comprises a first channel, a second channel and a communication channel, an upper end of the first channel is communicated with the first heat exchange chamber, a lower end of the first channel is communicated with a lower end of the second channel through the communication channel, and the first channel is located between the second channel and the first heat exchange chamber in a transverse direction.

According to some embodiments of the utility model, the second heat exchanger comprises a plurality of serpentine pipes extending in a vertically meandering manner, and the plurality of serpentine pipes are arranged in parallel along the arrangement direction of the first heat exchange chamber and the second heat exchange chamber.

According to some embodiments of the utility model, the burner comprises a plurality of fire rows arranged in a first horizontal direction, and a plurality of the serpentine tubes are arranged in a second horizontal direction perpendicular to the first horizontal direction.

According to some embodiments of the utility model, adjacent two of the serpentine tubes are at least partially vertically staggered.

According to some embodiments of the utility model, the serpentine tubes on both sides are in contact engagement with the walls of the second heat exchange chamber, adjacent two of the serpentine tubes being in contact engagement.

According to some embodiments of the utility model, the water outlet of the second heat exchanger is in communication with the water inlet of the first heat exchanger.

According to some embodiments of the utility model, the gas plant further comprises: the condensate water collector is arranged on the lower side of the second heat exchange chamber and is communicated with the second heat exchange chamber.

According to some embodiments of the utility model, a cooling heat insulation plate is arranged on the cavity wall of the first heat exchange cavity at intervals, and an air cooling channel is formed between the cooling heat insulation plate and the cavity wall of the first heat exchange cavity.

According to some embodiments of the utility model, the gas plant further comprises: the fan assembly is arranged on the lower side of the shell, and an air outlet of the fan assembly is communicated with an air inlet of the first heat exchange cavity.

A heat exchanger assembly according to an embodiment of the present utility model includes: the heat exchanger comprises a heat exchanger body, wherein the heat exchanger body is provided with a first channel and a second channel, the first channel and the second channel are transversely distributed and are arranged in parallel, an opening at the upper end of the first channel is formed into an air inlet, an opening at the upper end of the second channel is formed into an air outlet, the lower end of the first channel is communicated with the lower end of the second channel through a communication channel, and a heat exchange tube is arranged in at least one of the first channel and the second channel.

According to some embodiments of the utility model, the bottom wall of the communication channel is in a shape of a downward concave arc.

According to some embodiments of the utility model, the heat exchange tube is a serpentine tube extending in a zigzag manner in a vertical direction, and the plurality of serpentine tubes are arranged in an arrangement direction of the first and second channels.

According to some embodiments of the utility model, the serpentine tubes are at least three, wherein two adjacent serpentine tubes are at least partially vertically staggered.

According to some embodiments of the utility model, the bottom wall of the communication channel is provided with a drain opening for draining condensed water.

According to some embodiments of the utility model, the heat exchanger body includes a heat exchanger housing and a partition plate provided in the heat exchanger housing, the partition plate extending vertically and a lower end of the partition plate being spaced apart from a bottom wall of the heat exchanger housing by a predetermined gap to partition the heat exchanger housing interior space into the first passage, the second passage, and the communication passage.

According to some embodiments of the utility model, the side wall of the first channel remote from the second channel is a continuous wall, or the side of the first channel remote from the second channel is open to form a side opening.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a front view of a gas apparatus according to a first embodiment of the present utility model;

fig. 2 is a sectional view of a gas-fired apparatus according to a first embodiment of the present utility model;

fig. 3 is a front view of a gas appliance according to a second embodiment of the present utility model;

fig. 4 is a sectional view of a gas-fired apparatus according to a second embodiment of the present utility model;

fig. 5 is an exploded view of a gas appliance according to a second embodiment of the present utility model;

FIG. 6 is a cross-sectional exploded view of a gas appliance according to a second embodiment of the present utility model;

fig. 7 is a sectional view of a gas-fired apparatus according to a third embodiment of the present utility model;

fig. 8 is an exploded view of a gas appliance according to a third embodiment of the present utility model;

FIG. 9 is a cross-sectional exploded view of a gas appliance according to a third embodiment of the present utility model;

fig. 10 is a schematic structural view of a second heat exchanger according to an embodiment of the present utility model.

Reference numerals:

a gas plant 100; a housing 10; a first heat exchange chamber 101; a second heat exchange chamber 102; a combustion zone 103; a first channel 109; a second channel 104; a smoke collecting channel 105; a communication passage 106; a communication port 107; an air inlet 108; a first housing 11; a second housing 12; a side opening 121; a drain port 122; a top cover 13; a partition 14; a partition wall 20; a partition plate 21; a mounting surface 211; a reinforcing rib 212; a burner 30; a combustion surface 31; a first heat exchanger 40; a water pipe 41; a second heat exchanger 50; a serpentine tube 51; a condensed water collector 60; a fan assembly 70; a housing 80; cooling the heat shield 90; an air cooling passage 91; an outlet 911 of the air cooling passage 91; an inlet 912 of the air cooling channel 91; a shut-off section 92; a laterally extending section 921; a longitudinally extending section 922; a heat insulating portion 93; a heat exchanger assembly 200; a heat exchanger body 210; a heat exchanger housing 220.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, "a first feature" may include one or more such features, and "a plurality" may mean two or more, and that a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween, with the first feature "above", "over" and "above" the second feature including both the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature.

A gas combustion apparatus 100 according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

Referring to fig. 1 to 9, a gas apparatus 100 according to an embodiment of the present utility model may include: the housing 10, the burner 30, the first heat exchanger 40 and the second heat exchanger 50.

Specifically, the housing 10 has a first heat exchange chamber 101 and a second heat exchange chamber 102, and the first heat exchange chamber 101 and the second heat exchange chamber 102 communicate with each other. Wherein, the first heat exchange chamber 101 is provided with a burner 30 and a first heat exchanger 40, and the second heat exchange chamber 102 is provided with a second heat exchanger 50. In the working process of the gas equipment 100, the combustor 30 is used for heating cold air entering the first heat exchange chamber 101, the heated hot air exchanges heat with the first heat exchanger 40, then enters the second heat exchange chamber 102 and exchanges heat with the second heat exchanger 50 in the second heat exchange chamber 102, and the second heat exchanger 50 can collect latent heat of water vapor in flue gas, so that the heat exchange efficiency of the whole machine is improved.

In other words, the air heated by the burner 30 can fully absorb and utilize the heat of the air by twice heat exchange in the housing 10, so as to avoid energy waste caused by too high temperature of the flue gas discharged by the gas equipment 100, thereby being beneficial to increasing the efficiency of the whole machine and further achieving the effect of reducing the gas consumption.

Further, referring to fig. 2, 4 and 7, the burner 30 and the first heat exchanger 40 are vertically spaced apart such that a combustion region 103 is formed between the burner 30 and the first heat exchanger 40, i.e., a region of the first heat exchanging chamber 101 between the burner 30 and the first heat exchanger 40 is formed as the combustion region 103. The burner 30 burns air that can efficiently heat the combustion zone 103.

At least a part of the second heat exchanging chamber 102 is located at one side of the combustion area 103 in the horizontal direction, and a partition wall 20 is provided in the housing 10, and the second heat exchanging chamber 102 is partitioned from the combustion area 103 by the partition wall 20. In other words, the partition wall 20 is formed as part of the cavity wall of the combustion zone 103 of the first heat exchange chamber 101, while the partition wall 20 is formed as part of the cavity wall of the second heat exchange chamber 102.

During the heating of the air in the combustion zone 103 by the burner 30, the passing heat may not only flow with the air to exchange heat with the first heat exchanger 40 and the second heat exchanger 50 in turn, but also part of the heat in the combustion zone 103 may be conducted to the second heat exchange chamber 102 through the partition wall 20.

That is, heat in the combustion region 103 can be transferred to the second heat exchange chamber 102 through two paths of air flow heat exchange and conduction heat exchange of the partition wall 20, and exchange heat with the second heat exchanger 50 in the second heat exchange chamber 102, so that heat loss is reduced, and heat utilization rate is greatly improved.

If the second heat exchange chamber is spaced apart from the combustion area by a large distance, for example, the second heat exchange chamber is disposed above the first heat exchange chamber, or the second heat exchange chamber is disposed at one side of the first heat exchange chamber in the horizontal direction, or the second heat exchange chamber is disposed at one side of the combustion area in the horizontal direction, but the cavity wall of the first heat exchange chamber and the cavity wall of the combustion area are independent from each other and spaced apart by a large distance, the heat radiated outwards by the combustion area cannot be absorbed and utilized by the second heat exchange chamber.

In the application, the second heat exchange chamber 102 is arranged at one side of the first heat exchange chamber 101 in the horizontal direction, the combustion area 103 and the second heat exchange chamber 102 are separated by the partition wall 20, the second heat exchanger 50 in the second heat exchange chamber 102 can absorb the air waste heat after heat exchange with the first heat exchanger 40 again, and meanwhile, the partition wall 20 is utilized to radiate the heat which cannot be exchanged by the first heat exchanger 40 to the second heat exchange chamber 102 in advance, so that the heat dissipation heat of the combustion area 103 can be utilized, and the total heat utilization rate is greatly improved. Moreover, the second heat exchange chamber 102 can also avoid the heat radiated outwards by the partition wall 20 from damaging the components of the gas apparatus 100.

In some embodiments, as shown in fig. 1 and 2, the temperature of the air in the combustion zone 103 is about 1000 ℃, the temperature of the air radiated to the partition wall 20 is about 200 to 300 ℃, and the temperature of the air after heat exchange by the first heat exchanger 40 is 160 to 200 ℃. The temperature of the air after heat exchange by the second heat exchanger 50 is far lower than 160 ℃, for example, 50-60 ℃ can be achieved, the energy utilization rate is improved, the exhaust temperature of the gas equipment 100 is also reduced, and the use is safer.

In addition, the arrangement mode of the second heat exchange chamber 102 and the first heat exchange chamber 101 effectively reduces the vertical height of the shell 10, is more beneficial to the use of the gas equipment 100 in a smaller space, effectively reduces the visual size of the gas equipment 100 seen from the front side where a user stands normally, and improves the visual experience of the user.

According to the gas equipment 100 provided by the embodiment of the utility model, the second heat exchange chamber 102 is arranged on one side of the first heat exchange chamber 101 in the horizontal direction, the separation wall 20 separates the combustion area 103 from the second heat exchange chamber 102, so that the heat of the combustion area 103 is conducted to the second heat exchange chamber 102 through the separation wall 20, the energy utilization rate is remarkably improved, the heat waste is avoided, the efficiency of the whole gas equipment is improved, the effect of reducing the gas consumption is further achieved, the exhaust temperature is reduced, the vertical height of the gas equipment 100 is reduced, the installation requirement of a smaller space is met, and the visual experience of a user is improved.

In some embodiments of the present utility model, as shown in fig. 2, 6 and 9, the second heat exchange chamber 102 includes a first passage 109, an upper portion of the first heat exchange chamber 101 communicates with an upper portion of the first passage 109, a lower portion of the first passage 109 has an outlet, and a bottom portion of the first heat exchange chamber 101 has an air inlet 108. The cold air enters the first heat exchange chamber 101 through the air inlet 108, flows upwards, flows through the burner 30, the combustion area 103 and the first heat exchanger 40 in sequence, exchanges heat with the first heat exchanger 40, enters the upper part of the first channel 109 through the communication port 107 at the upper part of the first heat exchange chamber 101, flows downwards in the first channel 109, exchanges heat with the combustion area 103 and the second heat exchanger 50, and finally is discharged out of the first channel 109 through the outlet.

The above-described passage structure increases the flow path of air as much as possible and increases the area of heat transfer between the combustion region 103 and the second heat exchange chamber 102 through the partition wall 20, thereby contributing to an improvement in energy utilization.

In some embodiments, referring to fig. 2, 4, and 7, the lower end of the first passage 109 may be lower than the combustion face 31 of the burner 30. So that heat in the entire combustion zone 103, after being radiated outward through the partition wall 20, can be radiated to the second heat exchange chamber 102 and more fully absorbed and utilized by the second heat exchanger 50, thereby improving heat exchange efficiency.

According to some embodiments of the present utility model, as shown in fig. 1-5 and 7-8, the first heat exchange chamber 101 has a larger dimension in a first horizontal direction than in a second horizontal direction, and the second heat exchange chamber 102 is disposed on one side of the combustion region 103 in the second horizontal direction, the first horizontal direction being perpendicular to the second horizontal direction. Taking fig. 1 and 2 as an example, the dimension of the first heat exchanging chamber 101 in the left-right direction is larger than the dimension in the front-rear direction, and the second heat exchanging chamber 102 is provided at the rear side of the combustion area 103, i.e., the partition wall 20 is formed as the rear cavity wall of the first heat exchanging chamber 101.

Thus, the second heat exchange chamber 102 is provided at one side in the thickness direction of the first heat exchange chamber 101, and the chamber wall of the first heat exchange chamber 101 in the second horizontal direction is smaller than the chamber wall in the first horizontal direction from the fire row of the burner 30, for example, the distance of the front and rear chamber walls of the first heat exchange chamber 101 from the fire row of the burner 30 is generally smaller than 1cm, and the distance of the left and right chamber walls of the first heat exchange chamber 101 from the fire row of the burner 30 is generally larger than 10cm. And the combustion surface 31 corresponding to the cavity wall of the first heat exchange chamber 101 along the second horizontal direction is smaller than the combustion surface 31 corresponding to the cavity wall along the first horizontal direction, so that the temperature rise is faster.

Therefore, the temperature of the cavity wall of the first heat exchange chamber 101 along the second horizontal direction is higher than the temperature of the cavity wall along the first horizontal direction, and the second heat exchange chamber 102 is positioned at one side of the first heat exchange chamber 101 along the second direction, so that the heat radiated by the cavity wall of the first heat exchange chamber 101 can be more fully utilized, and the energy utilization rate is improved.

In some embodiments, as shown in fig. 5 and 8, the first heat exchange chamber 101 and the second heat exchange chamber 102 are arranged along a second horizontal direction (e.g., front-to-back direction), and the projection of the combustion region 103 along the second horizontal direction falls within the projection range of the second heat exchange chamber 102 along the second horizontal direction, in other words, the second heat exchange chamber 102 completely covers the combustion region 103, that is, the distance from the bottom of the first heat exchanger 40 to the top of the burner 30 falls completely within the height range of the second heat exchange chamber 102. Thereby ensuring that the heat of the combustion region 103 can be transferred to the second heat exchange chamber 102 to a greater extent, and improving the energy utilization rate.

In some embodiments, as shown in fig. 5 and 8, two cavity walls of the first heat exchange chamber 101 along the first horizontal direction may be further provided with a water pipe 41, the water pipe 41 may be used for communication between the heat exchange channels in the first heat exchanger 40, or the water pipe 41 may be used for communication between the heat exchange channels of the first heat exchanger 40 and the heat exchange channels of the second heat exchanger 50, so that the liquid may flow through the channels of the first heat exchanger 40 and the second heat exchanger 50 through the water pipe 41, so as to exchange heat with the hot air in the first heat exchange chamber 101 and the second heat exchange chamber 102 efficiently through the first heat exchanger 40 and the second heat exchanger 50. The arrangement mode of the first heat exchange chamber 101, the second heat exchange chamber 102 and the water pipe 41 enables the second heat exchange chamber 102 and the combustion area 103 to be in close fit for realizing efficient heat transfer, the water pipe 41 also has enough space for installation, the three are not interfered with each other, and the space arrangement is more reasonable.

According to some embodiments of the present utility model, as shown in fig. 7-9, the partition wall 20 may be a partition plate 21, where the thickness of the partition plate 21 is smaller, so as to improve the efficiency of heat transfer from the combustion area 103 to the second heat exchange chamber 102, and effectively separate the first heat exchange chamber 101 from the second heat exchange chamber 102, so as to ensure that air flows along a set route.

According to other embodiments of the present utility model, as shown in fig. 1 to 6, the partition wall 20 may include a plurality of partition plates 21, the plurality of partition plates 21 being arranged in the thickness direction, i.e., in the arrangement direction of the first heat exchange chamber 101 and the second heat exchange chamber 102 (front-rear direction as shown in fig. 2). And each partition plate 21 has a mounting surface 211 extending vertically, and a plurality of partition plates 21 can be attached and connected (welded or connected by fasteners, etc.) through the mounting surface 211, so that the space between any two adjacent partition plates 21 is smaller, thereby facilitating conduction of heat in the combustion area 103 to the second heat exchange chamber 102, reducing energy waste, and improving sealing property.

In some embodiments, the partition plate 21 may be a sheet metal part or a plastic injection molding part, which can meet processing requirements of different shapes and different thicknesses, and has high heat transfer performance.

In addition, as shown in fig. 6 and 9, the partition plate 21 may further have reinforcing ribs 212, and the reinforcing ribs 212 can enhance the structural strength of the partition plate 21, enabling the partition plate 21 to be processed to a thinner thickness, thereby being more advantageous in improving the heat transfer efficiency.

In some embodiments of the present utility model, as shown in fig. 5 to 6 and 8 to 9, the case 10 includes a first case 11, a second case 12, and a top cover 13, the second case 12 may be disposed at one side of the first case 11 in a horizontal direction, and the top cover 13 is disposed over the first case 11 and the second case 12. The partition wall 20 is disposed between the first housing 11 and the second housing 12, such that a first heat exchange chamber 101 is defined between the partition wall 20 and the first housing 11, a second heat exchange chamber 102 is defined between the partition wall 20 and the second housing 12, and a communication port 107 is defined between the partition wall 20 and the top cover 13, and the communication port 107 communicates with the first heat exchange chamber 101 and the second heat exchange chamber 102.

The chambers or channels within the housing 10, such as the first heat exchange chamber 101, the second heat exchange chamber 102, etc., are more easily defined and facilitate assembly of the burner 30, the first heat exchanger 40, the second heat exchanger 50, and the partition wall 20. Moreover, the second heat exchange chamber 102 can be formed by slightly improving the shell 10 on the basis of the gas equipment in the related art, which is beneficial to reducing the production cost.

In some embodiments, as shown in fig. 7 to 9, the partition wall 20 is a partition plate 21, and the first case 11 and the second case 12 are respectively connected to the partition plate 21, thereby achieving connection of the first case 11, the second case 12, and the partition plate 21, and the combustion region 103 and the second heat exchange chamber 102 can be separated by the partition plate 21 having a smaller thickness to enhance the heat transfer effect.

For example, as shown in fig. 9, the partition plate 21 is integrally formed with the left and right chamber walls of the first housing 11 and is engaged with the bottom chamber wall of the first housing 11, the peripheral edge of the partition plate 21 is formed as a mounting surface 211, and the mounting surface 211 is provided with a connection hole. The side of the second housing 12 facing the first housing 11 has a side opening, the rim of the side opening has a mounting surface 211, and the mounting surface 211 is provided with a connecting hole, the partition plate 21 and the mounting surface 211 of the second housing 12 are connected by a fastener penetrating the connecting hole, so that the partition plate 21 covers the side opening of the second housing 12, and the upper end of the partition plate 21 is provided with a notch to be spaced apart from the top cover 13 by a certain gap, thereby defining the communication port 107.

In other embodiments, as shown in fig. 1-6, the partition wall 20 includes two partition plates 21, namely, a first partition plate and a second partition plate, wherein the first partition plate is connected to the first housing 11, the second partition plate is connected to the second housing 12, and the first partition plate and the second partition plate are connected by fasteners, so that the connection of the first housing 11, the second housing 12, and the partition wall 20 is achieved. The thickness of the partition wall 20 formed by the first partition plate and the second partition plate is smaller, the heat transfer effect is good, and the first partition plate and the second partition plate are respectively connected with the first shell 11 and the second shell 12, so that the sealing performance of the first heat exchange chamber 101 and the second heat exchange chamber 102 is improved.

For example, as shown in fig. 6, the first partition plate is integrally formed with the left cavity wall and the right cavity wall of the first housing 11 and is connected to the bottom cavity wall of the first housing 11 in a clamping manner, the periphery of the first partition plate is formed as a mounting surface 211, and the mounting surface 211 is provided with a connecting hole. The second partition plate is integrally formed with the second housing 12, and the peripheral edge of the second partition plate is formed as a mounting surface 211, and the mounting surface 211 is provided with a connection hole. The first partition plate and the second partition plate are fastened and connected through the fastener penetrating through the connecting hole, connection is reliable, the distance between the first partition plate and the second partition plate is smaller, and heat loss is reduced. The upper ends of the two partition plates 21 may be respectively provided with notches to be spaced apart from the top cover 13 by a certain gap, thereby defining the communication ports 107.

According to some embodiments of the present utility model, as shown in fig. 1-9, the second heat exchange chamber 102 includes a first channel 109, a second channel 104, and a communication channel 106, wherein an upper end of the first channel 109 communicates with the first heat exchange chamber 101, a lower end of the first channel 109 communicates with a lower end of the second channel 104 through the communication channel 106, and the second heat exchanger 50 may be disposed in at least one of the first channel 109 and the second channel 104.

The flue gas in the first channel 109 flows downwards, the flue gas in the second channel 104 flows upwards, the second heat exchange chamber 102 is formed into a U-shaped channel structure, and the special structure not only meets the requirement that the flue gas subjected to heat exchange by the first heat exchanger 40 flows into the second heat exchange chamber 102 in time, but also meets the requirement that the second heat exchange chamber 102 conducts heat with a combustion area 103 in a larger range, and in addition, meets the requirement that the flue gas subjected to heat exchange in the second heat exchange chamber 102 is formed from the upper part, and meets the convenience and the concealment of the pipeline installation of the gas equipment 100.

It should be noted that, the housing defining the second heat exchange chamber 102 may be an integral piece or a separate piece, which is within the scope of the present utility model.

Further, as shown in fig. 2, 4 and 7, the first passage 109 is provided between the second passage 104 and the first heat exchange chamber 101 in the lateral direction. For example, the first channel 109 is located at the rear side of the first heat exchange chamber 101 and the second channel 104 is located at the rear side of the first channel 109. On the one hand, the second channel 104 is convenient to communicate with the first channel 109, and the space arrangement is reasonable; on the other hand, in embodiments in which the second heat exchanger 50 is disposed within the first passage 109, the first passage 109 spaces the first heat exchange chamber 101 from the second passage 104, avoiding energy waste from directly radiating heat from the combustion region 103 to the second passage 104.

In some embodiments, as shown in fig. 2, 4 and 7, the housing 10 also has a smoke-collecting channel 105, the smoke-collecting channel 105 being in communication with the second heat exchange chamber 102, e.g. in communication with the second channel 104, and the smoke-collecting channel 105 being located above the first heat exchange chamber 101 and the second heat exchange chamber 102. In other words, a portion of the smoke collecting channel 105 is located above the first heat exchange chamber 101, and another portion is located above the second heat exchange chamber 102 and communicates with the outlet of the second heat exchange chamber 102.

The air after heat exchange in the second heat exchange chamber 102 enters the smoke collecting channel 105, and is discharged out of the gas equipment 100 through the smoke collecting channel 105. In the whole flow process, the gas in the second channel 104 can form a heat insulation channel at the rear side of the first channel 109, and the smoke collecting channel 105 can form a heat insulation channel at the upper sides of the first heat exchange chamber 101 and the second heat exchange chamber 102, so that the backward radiation of the heat in the first channel 109 and the upward radiation of the heat in the first heat exchange chamber 101 can be reduced, thereby being beneficial to reducing the energy loss.

In some embodiments including the top cover 13, the top cover 13 may define the smoke collecting channel 105, so that the smoke collecting channel 105 is located above the first heat exchange chamber 101 and the second heat exchange chamber 102, which is beneficial to reduce the number of parts and make the gas apparatus 100 compact.

The second heat exchanger 50 according to some embodiments of the present utility model is described below with reference to the accompanying drawings.

According to some embodiments of the present utility model, as shown in fig. 6, 9 and 10, the second heat exchanger 50 may include a plurality of heat exchange tubes, which may be serpentine tubes 51, each serpentine tube 51 extending in a vertically meandering manner, the plurality of serpentine tubes 51 being arranged in a lateral direction, such as in an arrangement direction of the first heat exchange chamber 101 and the second heat exchange chamber 102, and the plurality of serpentine tubes 51 being connected in parallel. The length of the flow passage in the serpentine tube 51 is longer, so that the time for fluid to flow through the second heat exchanger 50 can be prolonged, and the liquid can be sufficiently heated by the hot air in the second heat exchange chamber 102, thereby improving the heat exchange efficiency of the second heat exchanger 50. The plurality of serpentine pipes 51 are connected in parallel to enable the liquid multiple channels to exchange heat simultaneously, which is beneficial to improving the water treatment efficiency.

And, the serpentine tube 51 is meandering along the vertical direction, which is advantageous to increase the extension length of the straight tube of the serpentine tube 51, thereby reducing the fluid flow resistance and facilitating the heat exchange. For example, as shown in fig. 10, each serpentine tube 51 may comprise a plurality of straight tube sections each extending in the left-right direction of the housing 10 and a plurality of bent tube sections vertically spaced apart, with two adjacent straight tube sections communicating through the bent tube sections to achieve a plurality of straight tube sections connected in series. The fluid reciprocates within the serpentine tube 51 to exchange heat substantially with the hot air within the second heat exchange chamber 102.

The shape of the outer surface of the serpentine tube 51 is not particularly limited in the present utility model, and the serpentine tube 51 may be a corrugated tube or a light pipe. Wherein the bellows can increase the surface area of the second heat exchanger 50, improving the heat exchange efficiency; the light pipe can reduce air flow resistance.

In some embodiments of the present utility model, as shown in fig. 6, 9 and 10, the burner 30 includes a plurality of fire rows arranged in a first horizontal direction such that the burner 20 has a larger size in the first horizontal direction and a smaller size in a second horizontal direction perpendicular to the first horizontal direction, resulting in a first heat exchange chamber 101 for mounting the burner 30 having a larger size in the first horizontal direction than in the second horizontal direction. The plurality of serpentine tubes 51 may be arranged in the second horizontal direction, so that the second heat exchanger 50 is located at one side of the thickness direction of the first heat exchange chamber 101, so that the overall thickness (size in the second horizontal direction) of the gas apparatus 100 is slightly increased, but the width (size in the first horizontal direction) and the height are unchanged, and the overall structure is compact and the visual experience for the user is better.

Referring to fig. 4, 7 and 10, in some embodiments, two adjacent serpentine tubes 51 may be at least partially staggered vertically, so that a bent air flow path may be formed between the two serpentine tubes 51, and the air in the second heat exchange chamber 102 flows downward along a serpentine path instead of a straight line in the process of flowing downward from top to bottom, so as to increase the contact time between the air and the second heat exchanger 50, thereby increasing the heat exchange efficiency.

Specifically, in some embodiments in which the serpentine tube 51 includes a plurality of straight tube sections, as shown in fig. 2, 4 and 7, the straight tube section of one serpentine tube 51 is positioned between two adjacent straight tube sections of the adjacent other serpentine tube 51 in a vertical direction such that the two adjacent serpentine tubes 51 are vertically staggered to define a serpentine air flow path.

In some embodiments, as shown in fig. 4 and 7, the serpentine tube 51 on both sides may be in contact engagement with the walls of the second heat exchange chamber 102 to avoid insufficient heat exchange caused by air flowing directly between the serpentine tube 51 and the walls of the second heat exchange chamber 102. And, two adjacent serpentine pipes 51 contact and cooperate, avoid the air to flow downward and cause the insufficient heat transfer directly between two adjacent serpentine pipes 51. In the air flow process, the air can flow obliquely downwards from between two adjacent straight pipe sections of one coiled pipe 51 to between two adjacent straight pipe sections of the other coiled pipe 51, then obliquely downwards to between two adjacent straight pipe sections of one coiled pipe 51, and then flows in a meandering manner until flowing to the bottom of the second heat exchange cavity 102.

By providing the second heat exchange chamber 102 and the second heat exchanger 50 with the above structure, the temperature of the air passing through the second heat exchanger 50 is lower, and the water vapor in the air is condensed to generate condensed water. Thus, according to some embodiments of the present utility model, as shown in fig. 1 and 2, the gas apparatus 100 may further include a condensate collector 60, the condensate collector 60 being disposed at a lower side of the second heat exchange chamber 102, and the condensate collector 60 being in communication with the second heat exchange chamber 102, so that condensate within the second heat exchange chamber 102 can flow into the condensate collector 60 to avoid accumulation within the second heat exchange chamber 102 to affect air flow.

According to some embodiments of the present utility model, as shown in fig. 1-9, the water outlet of the second heat exchanger 50 is communicated with the water inlet of the first heat exchanger 40, that is, cold water can enter the second heat exchanger 50 with lower temperature first to preheat and then enter the first heat exchanger 40 with higher temperature to exchange heat, so that the heat exchange efficiency is improved, the water temperature exchanged with the second heat exchanger 50 is guaranteed to be lower than the temperature in the second heat exchange chamber 102, the effect of reducing the temperature in the second heat exchange chamber 102 after the cold water enters the second heat exchanger 50 is better, the conduction of the temperature of the combustion area 103 to the second heat exchange chamber 102 can be promoted, a good heat insulation and cooling effect can be achieved on the side wall of the first heat exchange chamber 101, and the damage of surrounding electronic devices caused by outward radiation of heat is avoided.

According to some embodiments of the present utility model, as shown in fig. 1-9, the gas apparatus 100 may further include a fan assembly 70, where the fan assembly 70 is disposed on the lower side of the housing 10, and an air outlet of the fan assembly 70 is in communication with an air inlet 108 of the first heat exchange chamber 101. The fan assembly 70 is used for blowing external air into the first heat exchange chamber 101, and can drive the air in the first heat exchange chamber 101 to flow to the second heat exchange chamber 102, so as to ensure smooth heat exchange.

According to some embodiments of the present utility model, as shown in fig. 1 and 2, the gas apparatus 100 may further include a housing 80, the case 10 is disposed in the housing 80, and the condensate collector 60 and the fan assembly 70 are disposed outside the case 10 and within the housing 80 to complete the appearance of the gas apparatus 100.

In some embodiments of the present utility model, as shown in fig. 2 to 9, the cooling insulation board 90 is spaced on the cavity wall of the first heat exchange chamber 101, for example, in some embodiments in which the first heat exchange chamber 101 has a front cavity wall, a rear cavity wall, a left cavity wall, and a right cavity wall, the partition wall 20 may be formed as a rear cavity wall, and the cooling insulation board 90 may be provided on the inner side of at least one of the front cavity wall, the left cavity wall, the right cavity wall, and the partition wall 20. An air cooling channel 91 is formed between the cooling heat insulation plate 90 and the cavity wall of the first heat exchange cavity 101, an inlet 912 of the air cooling channel 91 is communicated with an air inlet 108 of the first heat exchange cavity 101, so that the air inlet 108 enters the air in the first heat exchange cavity 101, one part of the air can be mixed with fuel gas for combustion, the other part of the air can enter the air cooling channel 91 to cool the cavity wall of the first heat exchange cavity 101, external heat radiation of the shell 10 is reduced, damage of heat to parts of the fuel gas equipment 100 is reduced, and electronic components of the fuel gas equipment 100 are prevented from being subjected to heat loss.

In the embodiment where the cavity walls of the first heat exchange chamber 101 are all provided with the cooling insulation boards 90 at intervals, as shown in fig. 4-6, a fully enclosed air-cooled cooling system can be formed, so as to realize more reliable cooling. Through setting up forced air cooling system, make first heat exchanger 40 can adopt no coil pipe heat exchanger, saved the waterway pipeline that is arranged in the correlation technique to cool down, reduced the volume of first heat exchanger 40 greatly, under the condition that does not increase gas equipment 100 volume, can greatly increase the space in first heat exchange chamber 101 combustion area 103, reduced the volumetric heat density, avoid appearing the risk of first heat exchanger 40's heat exchange tube or fin fatigue fracture, improved gas equipment 100's reliability, also eliminated coil pipe corruption, frost crack scheduling problem.

In some embodiments, as shown in fig. 7-9, the partition wall 20 is not provided with cooling insulation panels 90 at intervals, and the other walls of the first chamber wall (e.g., the front chamber wall, the left chamber wall, and the right chamber wall) are provided with cooling insulation panels 90 at intervals. So that the air cooling passage 91 is not formed inside the partition wall 20, heat of the combustion region 103 can be radiated to the second heat exchange chamber 102 through the partition wall 20 to improve the energy utilization rate. The air cooling channels 91 are formed on the inner sides of the other cavity walls, so that heat in the first heat exchange cavity 101 cannot radiate outwards through the other cavity walls, damage to parts outside the shell 10 is avoided, energy loss can be reduced, and heat exchange efficiency is improved.

In addition, the large-area air cooling channel 91 between the cooling heat insulation plate 90 and the cavity wall not only reduces the wall surface temperature, but also effectively isolates combustion noise and improves the sound quality of the whole machine. During the design process, the fan assembly 70 may be adjusted to blow air for combustion and the distribution ratio for air cooling by adjusting the size of the inlet 912 of the air cooling channel 91 to account for combustion and air cooling requirements.

In some embodiments of the present utility model, as shown in fig. 4, the inlet 912 of at least one air cooling channel 91 is lower than the combustion surface 31 of the burner 30, so that the air temperature in the air cooling channel 91 can be ensured to be lower. Preferably, the inlet 912 of the at least one air cooling channel 91 is lower than the bottom surface of the burner 30, that is, the air source in the air cooling channel 91 is the cold air directly introduced by the fan assembly 70, and the cold air can cool the temperature of the housing 10 during the upward flowing process of the air cooling channel 91, so as to reduce the external heat radiation of the housing 10 and reduce the damage of heat to the components of the gas equipment 100.

According to some embodiments of the present utility model, as shown in fig. 4-9, at least one cooling insulation board 90 has a plurality of intercepting segments 92, each intercepting segment 92 has a laterally extending segment 921 and a longitudinally extending segment 922, the laterally extending segment 921 extends from inside to outside, a start end of the longitudinally extending segment 922 is connected to an outer end (i.e., a tail end) of the laterally extending segment 921, and the longitudinally extending segment 922 extends obliquely upward in a folded manner, each intercepting segment 92 has an outlet 911 of the air cooling passage 91. That is, the air cooling channel 91 is split by the plurality of intercepting segments 92, and splits and flows out at the outlet 911 of each intercepting segment 92, and is dispersed in the inner wall surface area of the cooling insulation board 90, so that a better-distributed air film protection layer is always formed on the inner wall surface of the cooling insulation board 90, and heat is blocked from radiating outwards, thereby reducing the influence of heat on the parts of the gas equipment 100.

In some embodiments of the present utility model, as shown in fig. 4-9, each of the laterally extending sections 921 has an outlet 911 of the air cooling passage 91 and is opened upward so that air flowing out from the outlet 911 of the air cooling passage 91 has an upward flow tendency, so that a film protection layer is formed on the inner wall surface of the cooling insulation board 90 all the time, and heat radiation to the outside is reduced. It should be noted that the lateral extension 921 may extend in a horizontal direction or may extend obliquely to the horizontal direction, and the opening direction of the outlet 911 of the air cooling channel 91 may be vertically upward or may be obliquely upward, which is within the scope of the present utility model.

In addition, referring to fig. 4 to 9, the longitudinal extension 922 extends obliquely upward and inward, so that the air flowing out of the outlet 911 on the transverse extension 921 can be directly blown to the inclined longitudinal extension 922, and more air forms a film protection layer under the guiding action of the longitudinal extension 922, so as to improve the heat insulation effect.

In some embodiments, as shown in fig. 6, the inlet 912 of the air cooling channel 91 may include a plurality of strip holes, and the outlet 911 of the air cooling channel 91 disposed in the intercepting section 92 may include a plurality of strip holes, which are disposed at intervals, so that on one hand, the structural strength of the air cooling insulation board is ensured, and on the other hand, the air inlet and outlet area of the air cooling channel 91 may be increased, so as to improve the cooling effect.

In some embodiments of the present utility model, as shown in fig. 4-9, the junction of the transversely extending section 921 and the longitudinally extending section 922 of the uppermost intercepting section 92 among the plurality of intercepting sections 92 is in contact engagement with the corresponding cavity wall to form an air insulating layer on the upper side of the cooling insulation board 90; the junction of the laterally extending section 921 and the longitudinally extending section 922 of the other shut-off section 92 is spaced apart from the corresponding cavity wall to form a cooling channel in the gap between the cooling insulation 90 and the cavity wall.

In some embodiments of the present utility model, as shown in fig. 4-9, the cooling insulation plate 90 extends toward the top of the cavity wall of the first heat exchange chamber 101 to the top of the first heat exchanger 40 to form an insulation 93 on the side of the first heat exchanger 40. In embodiments including a plurality of shut-off segments 92, a thermal insulation 93 may also be configured between the cooling insulation 90 and at least one cavity wall, the thermal insulation 93 being located on the upper side of the air-cooled channel 91, the thermal insulation 93 being connected to the longitudinally extending segment 922 of the uppermost shut-off segment 92 to simplify the construction and make full use of space. And the heat insulating portion 93 is located at the outer periphery of the first heat exchanger 40. The heat insulation portion 93 can insulate the first heat exchanger 40 from the outside, reduce heat radiation from the region where the first heat exchanger 40 is located, and prevent electronic components of the gas apparatus 100 from heat loss.

In some embodiments, as shown in fig. 4-9, the insulation 93 is an air insulation layer that may be defined by the upper portion of the cooling insulation panel 90 in cooperation with the corresponding cavity wall, simplifying the device structure. Specifically, the lower end of the air insulating layer may be a junction of the laterally extending section 921 and the longitudinally extending section 922 of the uppermost intercepting section 92 in contact engagement with the corresponding cavity wall.

In addition, the air heat insulating layer is not communicated with the air cooling channel 91, so that the air flow in the air cooling channel 91 enters the air heat insulating layer to prevent an air film layer from being formed on the inner side of the cooling heat insulating plate 90.

In some embodiments, the first heat exchange chamber 101 has a dimension in the first direction that is greater than a dimension in the second direction, which is the lateral direction, and the longitudinal direction is exemplified by the first direction. The portion of the cooling insulation 90 spaced from the left and right walls of the first heat exchange chamber 101 between the inlet 912 and the outlet 911 of the air cooling passage 91 may be a continuous plate. In other words, from the bottom to the top of the first heat exchange chamber 101, the cooling insulation plate 90 is not provided with the outlet 911 of the air cooling passage 91. The cooling insulation 90 spaced from the front and rear walls of the first heat exchange chamber 101 may include a plurality of shut-off sections 92 to ensure a relatively high temperature cooling effect of the front and rear walls.

Because the temperatures of the left cavity wall and the right cavity wall are lower than those of the front cavity wall and the rear cavity wall, the outlet 911 of the air cooling channel 91 is not arranged in the middle of the cooling insulation board 90 corresponding to the left cavity wall and the right cavity wall, only the outlet 911 of the air cooling channel 91 is arranged at the top, so that combustion can be stabilized, meanwhile, cold air flowing in the corresponding air cooling channel 91 can effectively reduce the temperatures of the left cavity wall and the right cavity wall through a convection heat exchange principle, and air in the air cooling channel 91 can flow out from the outlet 911 at the top to be directly blown to two ends of the first heat exchanger 40, thereby forming a low-temperature air flow layer at two ends of the first heat exchanger 40, continuously cooling the two ends of the first heat exchanger 40, reducing heat dissipated from the left end and the right end of the first heat exchanger 40 to the outside, and avoiding heat loss of electronic components of the gas equipment 100.

In some embodiments, the gas appliance 100 may be a gas heating stove or a gas wall-mounted stove, or the like.

A heat exchanger assembly 200 according to some embodiments of the present utility model is described below in conjunction with the accompanying drawings.

It should be noted that, in some embodiments, the second heat exchanger 50 of the gas apparatus 100 and the shell structure defining the second heat exchange chamber 102 according to the embodiments of the present utility model may constitute the heat exchanger assembly 200 according to the embodiments of the present utility model, and all the features and advantages of the above structures may be incorporated into the heat exchanger assembly 200 according to the embodiments of the present utility model.

The heat exchanger assembly 200 according to an embodiment of the present utility model includes: a heat exchanger body 210 and a heat exchange tube. Wherein the heat exchanger body 210 has a first passage 109, a second passage 104, and a communication passage 106. The first and second passages 109, 104 are arranged in a lateral direction (front-to-rear direction as shown in fig. 1 to 9), and the first and second passages 109, 104 are disposed in parallel with each other. An upper end opening of the first passage 109 is formed as an air inlet, an upper end opening of the second passage 104 is formed as an air outlet, and a lower end of the first passage 109 communicates with a lower end of the second passage 104 through the communication passage 106. Further, a heat exchange tube is provided in at least one of the first passage 109 and the second passage 104.

Thus, when the heat exchanger assembly 200 is applied to a gas plant 100 or the like, high temperature flue gas may enter the first passage 109 through the gas inlet and flow downward, then enter the second passage 104 through the communication passage 106, then flow upward and flow out through the gas outlet. The whole flow passage is generally formed into a U-shaped structure, and gas can exchange heat with the heat exchange tube in the passage in the flow process of the flow passage so as to heat the low-temperature medium in the heat exchange tube.

On the one hand, the channel structure with the special structure can meet the arrangement requirements of upper-end air inlet and upper-end air outlet. For example, when used in the gas apparatus 100, the first channel 109, the second channel 104 and the communication channel 106 may constitute the second heat exchange chamber 102, the heat exchange tube may constitute the second heat exchanger 50, the gas inlet of the heat exchanger assembly 200 may be formed as the communication port 107 to communicate with the first heat exchange chamber 101 of the gas apparatus 100, and the burner 30 and the first heat exchanger 40 may be disposed in the first heat exchange chamber 101, thereby forming a secondary heat exchange structure to improve the energy utilization rate of the exhaust gas in the first heat exchange chamber 101; and the low-temperature flue gas subjected to heat exchange with the second heat exchanger 50 can be discharged out of the second heat exchange chamber 102 through the upper end air outlet, so that the discharged flue gas can be discharged through the flue gas collecting channel 105 at the top of the gas equipment 100, and the structural design is reasonable. On the other hand, the channel structure with the special structure can vertically cover the combustion area 103 of the gas equipment 100 in a larger range, for example, the first heat exchange chamber 101 comprises the combustion area 103, and the second heat exchange chamber 102 can be positioned at least on one lateral side of the combustion area 103, so that heat in the combustion area 103 can be directly transferred to the second heat exchange chamber 102 through the cavity wall, thereby further improving the utilization rate of flue gas energy and heat exchange efficiency.

According to the heat exchanger assembly 200 of the embodiment of the utility model, by arranging the first channel 109 and the second channel 104 in parallel and communicating the lower parts of the first channel 109 and the second channel 104 through the communication channel 106, the vertical extension size of the formed channel structure can be increased, the transverse thickness can be reduced, the heat exchanger assembly 200 can fully exchange heat with the combustion area 103 when being used for the gas equipment 100, the energy utilization rate can be improved, and the pipeline connection requirement of the hot gas equipment can be met.

According to some embodiments of the present utility model, as shown in fig. 6 and 9, the bottom wall of the communication channel 106 includes a downwardly concave arc shape. The arc-shaped structure can guide the flue gas in the communication channel 106 to reduce the flow resistance and improve the heat exchange efficiency.

In some embodiments, as shown in fig. 6 and 9, the bottom wall of the communication channel 106 may be provided with a drain 122 for draining condensed water, and the condensed water generated in the first channel 109 and the second channel 104 may drain out of the channel through the drain 122, avoiding the condensed water accumulating in the channel to affect the air flow.

In addition, in some embodiments where the bottom wall of the communication channel 106 includes an arc shape, the drain opening 122 may be disposed at the lowest point of the arc shape, and the arc structure may not only guide the flue gas, but also guide the condensed water, so as to ensure more thorough drainage.

According to some embodiments of the present utility model, as shown in fig. 1 to 10, the heat exchange tube is a serpentine tube 51 extending in a zigzag direction in the vertical direction, and a plurality of serpentine tubes 51 are arranged along the arrangement direction of the first passage 109 and the second passage 104. Not only can the length of the flow channel be increased and the heat exchange efficiency be improved, but also the overall thickness of the heat exchanger assembly 200 is smaller by the arrangement mode, which is beneficial to improving the overall visual effect of the gas equipment 100.

In some embodiments, as shown in fig. 10, there are at least three serpentine tubes 51, where two adjacent serpentine tubes 51 are at least partially staggered vertically, so as to further increase the contact time between the flue gas and the heat exchange tubes, and improve the heat exchange efficiency.

In some embodiments of the present utility model, as shown in fig. 6 and 9, the heat exchanger body 210 includes a heat exchanger case 220 and a partition plate 14 provided in the heat exchanger case 220, the partition plate 14 extending in a vertical direction, and a lower end of the partition plate 14 being spaced apart from a bottom wall of the heat exchanger case 220 by a predetermined gap to partition a space in the heat exchanger case 220 into the first passage 109, the second passage 104, and the communication passage 106. The heat exchanger case 220 may be formed as an integral structure, which is advantageous in improving the sealability of the communication between the first passage 109 and the second passage 104, and is compact in the thickness direction.

It should be noted that, the specific structure of the heat exchanger housing 220 may be flexibly set according to practical situations. For example, in some embodiments, as shown in fig. 9, the second housing 12 of the gas apparatus 100 according to some embodiments of the present utility model may be formed as a heat exchanger housing 220, or as shown in fig. 6, the second housing 12 of the gas apparatus 100 and the associated partition plate 14 according to some embodiments of the present utility model may be formed as a heat exchanger housing 220.

In some embodiments, as shown in fig. 6, the side wall of the first channel 109 away from the second channel 104 is a continuous wall, that is, the middle of the side wall of the first channel 109 away from the second channel 104 is not provided with an open mouth, so that when the heat exchanger assembly 200 is used in the gas apparatus 100, the side wall can be matched with or in contact with the side wall of the combustion area 103 at a smaller distance, so that higher heat conduction efficiency is achieved, and meanwhile, the structural strength of the heat exchanger assembly 200 is ensured.

In other embodiments, as shown in fig. 9, a side of the first channel 109 remote from the second channel 104 is open to form a side opening 121. When the heat exchanger assembly 200 is used in the gas combustion apparatus 100, the wall thickness between the first passage 109 and the combustion region 103 is smaller, which is more beneficial to improving the heat transfer efficiency.

Other configurations and operations of the gas apparatus 100 according to the embodiment of the present utility model are known to those skilled in the art, and will not be described in detail herein.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the description herein, reference to the terms "embodiment," "specific embodiment," "example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (27)

1. A heat exchanger assembly, comprising:

the heat exchanger comprises a heat exchanger body, wherein the heat exchanger body is provided with a first channel and a second channel, the first channel and the second channel are transversely distributed and are arranged in parallel, an opening at the upper end of the first channel is formed into an air inlet, an opening at the upper end of the second channel is formed into an air outlet, the lower end of the first channel is communicated with the lower end of the second channel through a communication channel, and a heat exchange tube is arranged in at least one of the first channel and the second channel.

2. The heat exchanger assembly of claim 1, wherein the bottom wall of the communication channel comprises a downwardly concave arc.

3. The heat exchanger assembly of claim 1, wherein the heat exchange tube is a serpentine tube extending in a vertically meandering manner, the plurality of serpentine tubes being arranged in an arrangement direction of the first and second channels.

4. A heat exchanger assembly according to claim 3 wherein there are at least three serpentine tubes, wherein adjacent two of the serpentine tubes are at least partially vertically offset.

5. The heat exchanger assembly according to claim 1, wherein a bottom wall of the communication passage is provided with a drain port for draining condensed water.

6. The heat exchanger assembly according to any one of claims 1 to 5, wherein the heat exchanger body includes a heat exchanger housing and a partition plate provided in the heat exchanger housing, the partition plate extending vertically and a lower end of the partition plate being spaced apart from a bottom wall of the heat exchanger housing by a predetermined gap to partition the heat exchanger housing interior space into the first passage, the second passage, and the communication passage.

7. The heat exchanger assembly according to any one of claims 1 to 5, wherein a side wall of the first channel remote from the second channel is a continuous wall, or a side of the first channel remote from the second channel is open to form a side opening.

8. A gas plant comprising a heat exchanger assembly according to any one of claims 1-7.

9. The gas plant of claim 8, comprising:

a first shell, the first shell is provided with a first heat exchange cavity, the first heat exchange cavity is communicated with the first channel, a combustor and a first heat exchanger which are vertically spaced are arranged in the first heat exchange cavity, a combustion area is formed between the combustor and the first heat exchanger, a second heat exchanger is arranged in the first channel or the second channel,

at least a portion of the first passage is located on one side of the combustion region in the horizontal direction and is separated from the combustion region by a partition wall.

10. The gas fired apparatus according to claim 9, wherein an upper portion of the first heat exchange chamber is in communication with an upper portion of the first channel, and a bottom portion of the first heat exchange chamber has an air inlet.

11. The gas plant of claim 10, wherein a lower end of the first channel is below a combustion face of the burner.

12. The gas fired apparatus according to claim 9, wherein the first heat exchange chamber has a dimension in a first horizontal direction that is greater than a dimension in a second horizontal direction, the first channel being provided on a side of the combustion zone in the second horizontal direction, the first horizontal direction being perpendicular to the second horizontal direction.

13. The gas fired apparatus according to claim 9, wherein the first heat exchange chamber and the first channel are arranged in a second horizontal direction, a projection of the combustion zone in the second horizontal direction falling within a projection range of the first channel.

14. The gas plant according to claim 9, wherein the gas plant comprises a gas turbine,

the partition wall is a partition plate, or,

the partition wall comprises a plurality of partition plates, each partition plate is provided with a mounting surface extending along the vertical direction, and the partition plates are attached and connected through the mounting surfaces.

15. The gas plant according to claim 14, characterized in that the partition plate is a sheet metal part or a plastic injection-molded part and has reinforcing ribs.

16. The gas plant of claim 9 further comprising a top cover, wherein the heat exchanger body comprises a heat exchanger housing, wherein the top cover is positioned over the first housing and the heat exchanger housing,

the partition wall is arranged between the first shell and the heat exchanger shell, so that a first heat exchange chamber is defined between the partition wall and the first shell, a first channel is defined between the partition wall and the heat exchanger shell, and a communication port for communicating the first heat exchange chamber and the first channel is defined between the partition wall and the top cover.

17. The gas plant according to claim 16, wherein the gas plant comprises a gas turbine,

the partition wall is a partition plate, and the first shell and the heat exchanger shell are respectively connected with the partition plate; or,

the partition wall comprises a first partition plate and a second partition plate, the first partition plate is connected with the first shell, the second partition plate is connected with the heat exchanger shell, and the first partition plate is connected with the second partition plate through a fastener.

18. The gas fired apparatus according to claim 16, wherein the top cover has a smoke collecting channel with a portion above the first heat exchange chamber and another portion above the heat exchanger body and in communication with the outlet of the second channel.

19. The gas fired apparatus according to claim 9, wherein the first channel is located between the second channel and the first heat exchange chamber in a lateral direction.

20. A gas plant according to any one of claims 9-19, wherein the second heat exchanger comprises a plurality of serpentine tubes extending in a vertically meandering manner, the plurality of serpentine tubes being arranged in parallel along the direction of arrangement of the first heat exchange chamber and the first channel.

21. The gas fired apparatus according to claim 20, wherein the burner comprises a plurality of fire rows arranged in a first horizontal direction and a plurality of serpentine tubes arranged in a second horizontal direction perpendicular to the first horizontal direction.

22. The gas fired apparatus according to claim 20, wherein adjacent two of the serpentine tubes are at least partially vertically staggered.

23. The gas fired apparatus according to claim 22, wherein said serpentine on both sides is in contact engagement with the lumen wall of said first passageway, adjacent two of said serpentine being in contact engagement.

24. The gas plant according to any one of claims 9-19, wherein the water outlet of the second heat exchanger is in communication with the water inlet of the first heat exchanger.

25. The gas combustion apparatus as set forth in any one of claims 9 to 19, further comprising:

and the condensed water collector is arranged at the lower side of the communication channel and is communicated with the communication channel.

26. The gas-fired appliance according to any of claims 9-19, wherein cooling insulation boards are arranged on the cavity wall of the first heat exchange cavity at intervals, and an air cooling channel is formed between the cooling insulation boards and the cavity wall of the first heat exchange cavity.

27. The gas combustion apparatus as set forth in any one of claims 9 to 19, further comprising:

the fan assembly is arranged on the lower side of the first shell, and an air outlet of the fan assembly is communicated with an air inlet of the first heat exchange cavity.