Condenser and gas water heater

Abstract

The utility model relates to kitchen appliance technical field, specifically disclose a condenser and gas water heater, in this condenser, the shell has condensing cavity and the flue gas import and flue gas export that communicate condensing cavity, wherein, the flue gas export is located above the flue gas import, the shell is configured as the connecting casing, and the flue gas import is communicated with the smoke outlet, the heat exchange water pipe is located in condensing cavity, and is located above the flue gas import, the water receiving part has the smoke channel, the water receiving part is installed in condensing cavity, and is located below the heat exchange water pipe, the water retaining part is located in condensing cavity, and is located between the water receiving part and heat exchange water pipe, along the vertical direction, the projection's contour of water retaining part is located in the outer periphery of smoke channel, along the flow direction of flue gas, the flue gas import, smoke channel, condensing cavity, flue gas export are communicated in proper order. The above -mentioned setting has improved secondary heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a condenser and a gas water heater. Background Technology

[0002] A gas water heater is a gas appliance that uses gas as fuel and heats water by transferring heat to cold water flowing through a heat exchanger. To improve energy efficiency, a Class 1 energy efficiency gas water heater is required. The principle of a Class 1 energy efficiency gas water heater is to transfer the heat from the flue gas discharged from the heat exchanger of a standard Class 2 energy efficiency gas water heater to the condenser for secondary heat exchange, thereby improving thermal efficiency.

[0003] In related technologies, the condenser is generally placed above the heat exchanger and connected to the heat exchanger and condenser by a mounting bracket, which makes the installation process of the condenser chamber cumbersome and the assembly efficiency low. At the same time, the flue gas is directly introduced into the condenser after passing through the heat exchanger, resulting in low secondary heat exchange efficiency.

[0004] Therefore, there is an urgent need to research a condenser and a gas water heater to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a condenser to solve the problems of low assembly efficiency and low secondary heat exchange efficiency in existing gas water heaters.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A condenser is installed above a heat exchanger, the heat exchanger including a housing having a heat exchange chamber and a flue gas outlet connected to the heat exchange chamber;

[0008] The condenser includes:

[0009] The housing has a condensation chamber and a flue gas inlet and a flue gas outlet communicating with the condensation chamber, wherein the flue gas outlet is located above the flue gas inlet, the housing is configured to connect to the housing, and the flue gas inlet communicates with the flue gas outlet;

[0010] The hot water pipe is located inside the condensation chamber and above the flue gas inlet;

[0011] A water receiving component, which has a smoke inlet channel, is installed inside the condensation chamber and is located below the hot water exchange pipe;

[0012] A water baffle is disposed in the condensation chamber and located between the water receiving component and the hot water exchange pipe. In the vertical direction, the outline of the projection of the water baffle is located on the outer periphery of the flue gas inlet channel. Along the flue gas flow direction, the flue gas inlet, the flue gas inlet channel, the condensation chamber, and the flue gas outlet are connected in sequence.

[0013] As an optional technical solution for a condenser, the water baffle is plate-shaped and includes a shielding part and two guide parts connected to the front and rear sides of the shielding part. In the vertical direction, the outline of the projection of the shielding part is located on the outer periphery of the smoke inlet channel. The two guide parts are arranged at an angle and form an flared structure with the opening facing the smoke inlet channel.

[0014] As an optional technical solution for the condenser, the flow guide section is provided with through holes to allow flue gas to pass through.

[0015] As an optional technical solution for the condenser, the flow guide section has a plurality of through holes, which are evenly distributed at intervals along the extension direction of the hot water exchange pipe; or,

[0016] The through hole is elongated and extends along the length of the hot water exchange pipe.

[0017] As an optional technical solution for a condenser, the water receiving component is plate-shaped and has a smoke outlet and water receiving portions located on the front and rear sides of the smoke outlet. The smoke inlet channel is located in the smoke outlet, and the two water receiving portions are inclined downwards in a direction away from the smoke outlet and connected to the inner sidewall of the outer casing.

[0018] As an optional technical solution for the condenser, the outer casing has a drain hole located at the lowest point of the water receiving part. The condenser also includes a drain pipe connected to the outer casing and communicating with the drain hole to discharge condensate located in the water receiving part.

[0019] As an alternative technical solution for the condenser, the water receiving element is arranged at an angle and slopes downwards towards the drain hole; and / or,

[0020] The drain pipe is arranged at an angle and slopes downward in a direction away from the drain hole.

[0021] As an optional technical solution for the condenser, the end of the water receiving part away from the smoke outlet is bent upward to form a first flange, and the first flange is welded to the inner wall of the outer shell.

[0022] As an alternative technical solution for a condenser, the flue gas outlet extends horizontally; and / or,

[0023] The smoke outlet is provided with a reinforcing member on the outer periphery of the smoke inlet channel.

[0024] A gas water heater includes a heat exchanger and a condenser as described in any of the above technical solutions. The heat exchanger includes a housing with a heat exchange chamber and a flue gas outlet communicating with the heat exchange chamber. The condenser is installed above the heat exchanger, and the flue gas outlet is communicating with the flue gas inlet.

[0025] This utility model has at least the following beneficial effects:

[0026] This utility model provides a condenser and a gas water heater. The condenser includes a shell, a hot water exchange pipe, a water inlet, and a water baffle. The shell has a condensation chamber and a flue gas inlet and a flue gas outlet communicating with the condensation chamber. The flue gas outlet is located above the flue gas inlet. The shell is configured as a connecting shell, and the flue gas inlet communicates with the flue gas outlet. The hot water exchange pipe is located inside the condensation chamber and above the flue gas inlet. The water inlet has a flue gas inlet channel and is installed inside the condensation chamber, located below the hot water exchange pipe. The water baffle is located inside the condensation chamber, between the water inlet and the hot water exchange pipe. In the vertical direction, the outline of the projected water baffle is located on the outer periphery of the flue gas inlet channel. Along the flue gas flow direction, the flue gas inlet, the flue gas inlet channel, the condensation chamber, and the flue gas outlet are connected in sequence.

[0027] In use, the outer shell of the condenser can be directly connected to the shell of the heat exchanger, thus connecting the flue gas outlet of the heat exchanger with the flue gas inlet. This eliminates the need for installation supports, simplifies the installation process, and improves assembly efficiency. Furthermore, after passing through the flue gas inlet and the flue gas inlet channel, the flue gas is divided into two streams by the baffle. These two streams enter the condensing chamber from the front and rear sides of the baffle, respectively, to contact the heat exchange pipes within the condensing chamber. Compared to the undivided method, the movement paths of the two flue gas streams are doubled, effectively extending the flue gas flow time to provide sufficient time for heat exchange. The larger flow range increases the contact area with the heat exchange pipes, improving the heat absorption capacity of the heat exchange pipes and enhancing the secondary heat exchange efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the condenser in an embodiment of the present invention;

[0030] Figure 2 This is an exploded view of the condenser in an embodiment of this utility model;

[0031] Figure 3 This is a cross-sectional structural diagram of the condenser in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram showing the cooperation between the water receiving component and the water blocking component in an embodiment of this utility model.

[0033] In the picture:

[0034] 100. Outer shell; 110. Condensation chamber; 120. Flue gas inlet; 130. Flue gas outlet; 140. Drain pipe; 150. First channel;

[0035] 200. Replace the hot water pipe;

[0036] 300. Water receiving fitting; 310. Smoke inlet passage; 320. Smoke outlet; 330. Water receiving part; 340. Water collection trough; 350. First flange; 360. Second flange;

[0037] 400, water-blocking component; 410, cavity; 420, flow guide channel; 430, shielding part; 440, flow guide part. Detailed Implementation

[0038] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0039] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0040] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0041] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0042] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms may include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0043] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0044] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0045] A gas water heater is a gas appliance that uses gas as fuel and heats water by transferring heat to cold water flowing through a heat exchanger. It is currently the most convenient and economical device for quickly heating water. For gas water heaters with a lower drum platform, the fan assembly is located below the heat exchanger. The working principle is that gas enters through the inlet, passes through the gas proportional valve and gas distributor, and then burns in the burner. The high-temperature flue gas produced by combustion exchanges heat in the heat exchanger and is discharged through a fume hood. Generally, the discharged flue gas temperature is still relatively high, resulting in energy waste and loss. With increasing attention to the energy efficiency of home appliances, first-level energy-efficient gas water heaters have also been launched. The principle of first-level energy-efficient gas water heaters is to use the heat from the flue gas discharged from the heat exchanger of ordinary second-level energy-efficient gas water heaters for secondary heat exchange through a condenser, thereby improving thermal efficiency.

[0046] In related technologies, the condenser is typically positioned above the heat exchanger and connected to it via a mounting bracket, resulting in a cumbersome installation process and low assembly efficiency. Furthermore, the flue gas is directly introduced into the condenser after passing through the heat exchanger, leading to low secondary heat exchange efficiency.

[0047] like Figures 1 to 4 As shown, this embodiment provides a condenser, which includes a housing 100, a hot water exchange pipe 200, a water receiving component 300, and a water baffle 400. The housing 100 has a condensation chamber 110 and a flue gas inlet 120 and a flue gas outlet 130 communicating with the condensation chamber 110. The flue gas outlet 130 is located above the flue gas inlet 120. The housing 100 is configured as a connecting shell, and the flue gas inlet 120 communicates with the flue gas outlet. The hot water exchange pipe 200 is located inside the condensation chamber 110 and is positioned above the flue gas outlet. Above the inlet 120; the water receiving component 300 has a flue gas inlet channel 310, the water receiving component 300 is installed in the condensation chamber 110 and is located below the hot water exchange pipe 200; the water baffle 400 is located in the condensation chamber 110 and is located between the water receiving component 300 and the hot water exchange pipe 200. In the vertical direction, the outline of the projection of the water baffle 400 is located on the outer periphery of the flue gas inlet channel 310. In the direction of flue gas flow, the flue gas inlet 120, the flue gas inlet channel 310, the condensation chamber 110 and the flue gas outlet 130 are connected in sequence.

[0048] In use, the outer shell 100 of the condenser can be directly connected to the shell of the heat exchanger, thereby connecting the flue gas outlet of the heat exchanger with the flue gas inlet 120. This avoids the need for installation supports, simplifies the installation process, and improves assembly efficiency. In addition, after the flue gas passes through the flue gas inlet 120 and the flue gas inlet channel 310, it is divided into two streams by the baffle 400. The two streams of flue gas enter the condensing chamber 110 from the front and rear sides of the baffle 400, respectively, to contact the heat exchanger pipe 200 in the condensing chamber 110. Compared with the non-diverted method, the movement path of the two streams of flue gas after diversion is doubled, which is equivalent to extending the flow time of the flue gas to provide sufficient time for heat exchange. The flow range is larger to increase the contact area with the heat exchanger pipe 200, thereby increasing the amount of heat absorbed by the heat exchanger pipe 200 from the flue gas and improving the secondary heat exchange efficiency.

[0049] The water-blocking component 400 is plate-shaped and includes a blocking portion 430 and two guide portions 440 connected to the front and rear sides of the blocking portion 430. Vertically, the outline of the projection of the blocking portion 430 is located inside the flue gas inlet channel 310. The two guide portions 440 are arranged at an angle, forming an flared structure with their openings facing the flue gas inlet channel 310. This arrangement allows condensate dripping from the hot water exchange pipe 200 to flow rapidly downwards along the guide portions 440 to the water receiving component 300, reducing residence time and thus reducing the absorption of heat from the flue gas. This increases the amount of heat absorbed by the hot water exchange pipe 200 from the flue gas, thereby improving the secondary heat exchange efficiency. The blocking portion 430 effectively reduces the height of the water-blocking component 400.

[0050] To reduce resistance to flue gas, in some embodiments, the guide section 440 has through holes for flue gas to pass through. It should be noted that, vertically, the projection of the through holes is located outside the flue gas inlet channel 310. Specifically, the guide section 440 has several through holes, which are evenly distributed at intervals along the extension direction of the hot water exchange pipe 200. In other embodiments, the through holes are elongated and extend along the length of the hot water exchange pipe 200. The arrangement of these through holes ensures that the flue gas, after entering the condenser, uniformly contacts and exchanges heat with the hot water exchange pipe 200. The hot water exchange pipe 200 extends in a left-right direction.

[0051] The water receiving component 300 is plate-shaped and has a smoke outlet 320 and two water receiving parts 330, which are respectively located on the front and rear sides of the smoke outlet 320. The smoke inlet channel 310 is located in the smoke outlet 320. The two water receiving parts 330 are inclined downward in a direction away from the smoke outlet 320 and connected to the inner side wall of the outer casing 100 to form a water collection trough 340 on the outer side wall, which facilitates the collection of condensate. At the same time, the water receiving component 300 is connected to the outer casing 100, which improves the structural strength of the outer casing 100.

[0052] To facilitate the drainage of condensate, in some embodiments, the housing 100 has a drain hole located at the lowest point of the water receiving portion 330. The condenser also includes a drain pipe 140 connected to the housing 100 and communicating with the drain hole to drain the condensate located in the water receiving portion 330.

[0053] Furthermore, the water receiving component 300 is arranged at an angle and slopes downwards towards the drain hole, thereby causing the water collection tank 340 to slope downwards towards the drain hole as well. Specifically, the water receiving component 300 slopes downwards from left to right. The drain pipe 140 is arranged at an angle and slopes downwards away from the drain hole. Specifically, the drain pipe 140 slopes downwards from left to right to improve the efficiency of condensate drainage.

[0054] In some embodiments, the end of the water receiving portion 330 away from the smoke outlet portion 320 is bent upward to form a first flange 350. The first flange 350 is welded to the inner wall of the housing 100 to improve the ease of connection. In addition, the first flange 350 also helps to further improve the structural strength of the housing 100 and avoid the probability of dents when the outside is squeezed.

[0055] The smoke outlet section 320 extends horizontally; in other words, it is a flat plate structure perpendicular to the vertical direction, facilitating the stamping of the smoke inlet channel 310 within the smoke outlet section 320. To improve the structural strength of the smoke outlet section 320 and prevent vibration and noise under smoke impact, in some embodiments, a reinforcing member is provided around the smoke inlet channel 310 of the smoke outlet section 320. Specifically, the reinforcing member is a cylindrical second flange 360, which surrounds the outer periphery of the smoke inlet channel 310 and extends upward. The second flange 360 ​​can be completed simultaneously with the stamping of the smoke inlet channel 310, or it can be connected to the smoke outlet section 320 by welding.

[0056] In other embodiments, sheet-like reinforcing ribs may be welded to the smoke outlet 320, wherein the reinforcing ribs are perpendicular to the smoke outlet 320, that is, the reinforcing ribs are parallel to the axial direction of the smoke inlet channel 310. Multiple reinforcing ribs may be provided, and each reinforcing rib is arranged at intervals along the circumference of the smoke inlet channel 310, and each reinforcing rib is arranged radially.

[0057] The outer casing 100 has two first channels 150. The inlet and outlet sections of the hot water pipe 200 are respectively inserted into the two first channels 150 and welded to the outer casing 100. The inlet section is connected to an external water source, and the outlet section is connected to the hot water supply end.

[0058] The water-blocking component 400 has a cavity 410 and an inlet and an outlet connecting the cavity 410. The hot water exchange pipe 200 is connected to the cavity 410. Lower-temperature water first enters the cavity 410 through the inlet, then flows out through the outlet and enters the hot water exchange pipe 200 to absorb the temperature of the water-blocking component 400. This reduces the heat absorbed by the condensate, decreases the heat discharged through the condensate, and increases the heat absorption of the flue gas by the hot water exchange pipe 200, thereby improving the secondary heat exchange efficiency. When water needs to be supplied to the cavity 410, a second channel communicating with the inlet of the cavity 410 can be provided on the outer casing 100. An external water source is connected to the second channel. In this embodiment, the inlet section of the hot water exchange pipe 200 is connected to the outlet of the cavity 410 but not to the external water source; the outlet section is connected to the hot water supply end.

[0059] The upper side of the water baffle 400 is provided with a guide groove 420 extending in the front-to-back direction. Condensate drippings can flow directly outward along the guide groove 420 and reach the water receiving part 330 without converging; each drop can flow independently, increasing the flow rate of the condensate, thereby reducing the heat absorption time, lowering the temperature of the condensate discharge, increasing the heat absorption capacity of the hot water exchanger pipe 200 by the flue gas, and improving the secondary heat exchange efficiency. The upper side of the water baffle 400 is polished to increase the flow rate of the condensate. The guide groove 420 has a V-shaped semi-circular flared structure.

[0060] This embodiment also provides a gas water heater, including a heat exchanger and a condenser as described in any of the above embodiments. The condenser is installed above the heat exchanger, which includes a housing with a heat exchange chamber and a flue gas outlet communicating with the heat exchange chamber. The flue gas outlet is connected to a flue gas inlet 120.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A condenser, characterized in that, Installed above a heat exchanger, the heat exchanger includes a housing having a heat exchange chamber and a flue gas outlet connected to the heat exchange chamber; The condenser includes: A housing (100) having a condensation chamber (110) and a flue gas inlet (120) and a flue gas outlet (130) communicating with the condensation chamber (110), wherein the flue gas outlet (130) is located above the flue gas inlet (120), the housing (100) is configured to connect to the housing, and the flue gas inlet (120) communicates with the flue gas outlet; A hot water pipe (200) is located inside the condensation chamber (110) and above the flue gas inlet (120); A water receiving component (300) having a smoke inlet channel (310) is installed in the condensation chamber (110) and located below the hot water exchange pipe (200); A water baffle (400) is disposed in the condensation chamber (110) and located between the water receiving part (300) and the hot water exchange pipe (200). In the vertical direction, the outline of the projection of the water baffle (400) is located on the outer periphery of the flue gas inlet channel (310). Along the flue gas flow direction, the flue gas inlet (120), the flue gas inlet channel (310), the condensation chamber (110), and the flue gas outlet (130) are connected in sequence.

2. The condenser according to claim 1, characterized in that, The water baffle (400) is plate-shaped and includes a shielding part (430) and two guide parts (440) connected to the front and rear sides of the shielding part (430). In the vertical direction, the outline of the projection of the shielding part (430) is located inside the smoke inlet channel (310). The two guide parts (440) are arranged at an angle and form an flared structure with the opening facing the smoke inlet channel (310).

3. The condenser according to claim 2, characterized in that, The guide section (440) has a through hole for the passage of flue gas.

4. The condenser according to claim 3, characterized in that, The flow guide (440) has a plurality of through holes, which are evenly distributed at intervals along the extension direction of the hot water exchange pipe (200); or, The through hole is elongated and extends along the length of the hot water exchange pipe (200).

5. The condenser according to any one of claims 1-4, characterized in that, The water receiving component (300) is plate-shaped and has a smoke outlet (320) and water receiving portions (330) located on the front and rear sides of the smoke outlet (320). The smoke inlet channel (310) is located in the smoke outlet (320). The two water receiving portions (330) are inclined downward in a direction away from the smoke outlet (320) and are connected to the inner wall of the outer casing (100).

6. The condenser according to claim 5, characterized in that, The housing (100) has a drain hole located at the lowest point of the water receiving part (330). The condenser also includes a drain pipe (140) connected to the housing (100) and communicating with the drain hole to discharge condensate located in the water receiving part (330).

7. The condenser according to claim 6, characterized in that, The water receiving element (300) is arranged at an angle and tilts downwards in the direction close to the drain hole; and / or, The drain pipe (140) is arranged at an angle and slopes downward in a direction away from the drain hole.

8. The condenser according to claim 5, characterized in that, The end of the water receiving part (330) away from the smoke outlet part (320) is bent upward to form a first flange (350), and the first flange (350) is welded to the inner wall of the outer shell (100).

9. The condenser according to claim 5, characterized in that, The smoke outlet (320) extends horizontally; and / or, The smoke outlet (320) is provided with a reinforcing member on the outer periphery of the smoke inlet channel (310).

10. A gas-fired water heater, characterized in that, The device includes a heat exchanger and a condenser as described in any one of claims 1-9, the heat exchanger comprising a housing having a heat exchange chamber and a flue gas outlet communicating with the heat exchange chamber, the condenser being mounted above the heat exchanger, and the flue gas outlet communicating with the flue gas inlet (120).

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