Heat exchanger assembly and warmer

Abstract

The utility model relates to the technical field of heat exchangers, and particularly discloses a heat exchanger assembly and a warmer. The heat exchanger assembly comprises a heat exchange cylinder, the top end of the heat exchange cylinder is closed, the bottom end of the heat exchange cylinder is provided with an inlet allowing a burner to be inserted therein, and a plurality of heat exchange fins are arranged on the surface of the heat exchange cylinder. The heat loss of the combustor can be reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger assembly and a heater. Background Technology

[0002] Existing gas heaters include components such as burners, heat exchangers, and fans. The heat generated by the burner is conducted to the heat exchanger, which heats the air, and the fan blows the hot air out to provide warmth to the user.

[0003] For example, Chinese utility model patent with publication number CN214370554U discloses a heater whose heat exchanger adopts a conventional structural design and can only be placed on top of the burner. Since the heat of the burner is dissipated in all directions, some heat is not absorbed by the heat exchanger, resulting in low heat exchange efficiency. Utility Model Content

[0004] This invention provides a heat exchanger assembly and a heater that can reduce heat loss from the burner and improve heat exchange efficiency.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] According to a first aspect of the present invention, an embodiment of the present invention provides a heat exchanger assembly, including a heat exchange cylinder, the top end of which is closed, the bottom end of which is provided with an inlet for inserting a burner, and the surface of which is provided with a plurality of heat exchange fins.

[0007] In some embodiments, the inner wall of the heat exchange cylinder is further provided with protruding heat-absorbing fins.

[0008] In some embodiments, a flow channel is formed between adjacent heat exchange fins to allow air to pass through.

[0009] In some embodiments, the heat exchange fins are disposed on the circumferential surface of the heat exchange cylinder, and the heat exchange fins are distributed along the axial direction of the heat exchange cylinder.

[0010] In some embodiments, the heat exchange fins are sleeved on the outside of the heat exchange cylinder, and baffles extending toward the bottom of the heat exchange cylinder are provided on both sides of the heat exchange fins. The lower end of the baffles abuts against the adjacent heat exchange fins located below it; all baffles are arranged in parallel.

[0011] In some embodiments, the heat exchange cylinder further includes a flue pipe; a baffle is provided inside the heat exchange cylinder, the baffle separating a combustion chamber and a flue pipe in the inner cavity of the heat exchange cylinder, the combustion chamber and the flue pipe are connected, the bottom end of the combustion chamber is connected to the inlet, the flue pipe is connected to the flue pipe, and the burner inserted into the heat exchange cylinder is located in the combustion chamber.

[0012] In some embodiments, the baffle is cylindrical, and a combustion chamber is formed on the inner side of the baffle. The top end of the combustion chamber is connected to the top end of the exhaust chamber.

[0013] According to a second aspect of the present invention, an embodiment of the present invention provides a heater, including a burner assembly, a main fan, and a heat exchanger assembly as described in any of the first aspects above; the burner assembly includes a burner located in a heat exchange cylinder, and the air outlet of the main fan faces the heat exchange fins.

[0014] In some embodiments, the burner assembly further includes an air inlet seat and a gas assembly; the burner is fixed on the air inlet seat, the burner includes a vertically arranged ejector tube and a vertically arranged combustion tube, the lower end of the ejector tube is connected to the air inlet seat, the upper end of the ejector tube is connected to the combustion tube, and the circumferential surface of the combustion tube is provided with a plurality of flame holes; the gas assembly includes a nozzle located below the ejector tube, the nozzle being arranged toward the ejector tube.

[0015] In some embodiments, the air intake seat is provided with an air intake chamber, and the air intake seat is provided with an air inlet communicating with the air intake chamber; the ejector tube is located at the top of the air intake seat, and the lower end of the ejector tube is communicating with the air intake chamber, and the nozzle is located inside the air intake chamber.

[0016] The present invention has at least the following beneficial effects: The heat exchanger assembly of the present invention includes a heat exchange cylinder, the top of which is closed, and the bottom of which is provided with an inlet for inserting a burner. The heat exchange cylinder is positioned to cover the outside of the burner, and the heat exchange cylinder can absorb heat from all sides of the burner to reduce heat loss from the burner and improve heat exchange efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a heat exchanger assembly according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional schematic diagram of the heat exchanger assembly shown;

[0019] Figure 3 This is a schematic diagram of the heat exchanger assembly of one embodiment of the present invention after the top of the heat exchange cylinder is opened;

[0020] Figure 4 This is a schematic diagram of the structure of a heater according to an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of a heater according to an embodiment of the present invention after the outer shell has been removed;

[0022] Figure 6 This is a schematic diagram of the structure of a burner assembly according to an embodiment of the present invention;

[0023] Figure 7 for Figure 6 A cross-sectional schematic diagram of the burner assembly shown;

[0024] Figure 8 This is a schematic diagram of the burner assembly according to another embodiment of the present invention.

[0025] The attached figures are labeled as follows:

[0026] Burner 100, injector 110, combustion tube 120, flame port 121, ignition needle 130, thermocouple 140;

[0027] Air intake seat 200, air intake chamber 210, secondary air passage 220, sealing sleeve 230;

[0028] Gas assembly 300, nozzle 310, valve body 320, gas pipe 330;

[0029] Blower 400, air guide structure 410;

[0030] Inlet 501, combustion chamber 502, exhaust chamber 503, heat exchange cylinder 510, heat exchange fins 520, flow channel 521, baffle 522, partition 530, exhaust pipe 540, heat absorption fins 550;

[0031] Main fan 600;

[0032] The outer casing is 700, and the heating outlet is 710. Detailed Implementation

[0033] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0034] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0036] An embodiment of this utility model provides a heat exchanger assembly, such as... Figure 1-2 As shown, the device includes a heat exchange cylinder 510. The top of the heat exchange cylinder 510 is sealed to prevent flue gas leakage from the top and reduce heat loss at the top of the heat exchange cylinder 510. The bottom of the heat exchange cylinder 510 has an inlet 501 for inserting a burner, allowing the burner to be inserted into the heat exchange cylinder 510. Thus, the heat exchange cylinder 510 can be positioned to cover the outside of the burner, allowing it to absorb heat from all sides of the burner, reducing heat loss and improving heat exchange efficiency.

[0037] The surface of the heat exchange cylinder 510 is provided with multiple heat exchange fins 520. The heat exchange fins 520 increase the contact area with the air. The heat exchange cylinder 510 absorbs heat and conducts it to the surrounding air through the heat exchange fins 520, thereby heating the air around the heat exchange cylinder 510.

[0038] In some embodiments, such as Figure 2 and Figure 3 As shown, protruding heat-absorbing fins 550 are also provided on the inner wall of the heat exchange cylinder 510. The heat-absorbing fins 550 are relatively closer to the burner inside the heat exchange cylinder 510, and can absorb more heat from the burner. The heat is then conducted to the heat exchange cylinder 510 through the heat-absorbing fins 550, further improving the heat exchange efficiency.

[0039] The heat-absorbing fins 550 can be radially distributed relative to the center of the heat exchange cylinder 510. Adjacent heat-absorbing fins 550 do not interfere with each other, and gas can flow between adjacent heat-absorbing fins 550. Hot gas can enter between adjacent heat-absorbing fins 550 to increase the contact area between the heat-absorbing fins 550 and the hot gas, thereby increasing the heat absorption.

[0040] In some embodiments, such as Figure 1-2 As shown, an airflow channel 521 is formed between adjacent heat exchange fins 520. When the main fan blows air onto the heat exchange fins 520, the airflow can flow through the airflow channel 521 to carry away the heated air in the airflow channel 521. The airflow channel 521 can accelerate the flow of gas, making it easier for hot air to be blown out quickly and provide heating to users in a timely manner.

[0041] Furthermore, heat exchange fins 520 are disposed on the circumferential surface of the heat exchange cylinder 510, and the heat exchange fins 520 are distributed along the axial direction of the heat exchange cylinder 510. All heat exchange fins 520 are in a stacked structure, and the aforementioned flow channels 521 can be formed between adjacent heat exchange fins 520. All flow channels 521 are basically in a lateral extension state. Adjacent heat exchange fins 520 can be arranged in parallel or not in parallel.

[0042] Furthermore, the heat exchange fins 520 are fitted onto the outside of the heat exchange cylinder 510, with the heat exchange cylinder 510 extending through the heat exchange fins 520. The heat exchange fins 520 can heat the air surrounding the heat exchange cylinder 510. Baffles 522 extending towards the bottom of the heat exchange cylinder 510 are provided on both sides of the heat exchange fins 520. The lower ends of the baffles 522 abut against the adjacent heat exchange fins 520 located below them. All baffles 522 are arranged in parallel, which blocks both sides of the flow channel 521. The airflow direction in all flow channels 521 is basically the same as the extension direction of the baffles 522, allowing the hot air to flow in basically the same direction and be concentrated towards the air outlet for centralized heat delivery.

[0043] In some embodiments, such as Figure 2 and Figure 3 As shown, the heat exchanger assembly in this embodiment also includes a flue pipe 540; a partition 530 is provided inside the heat exchange cylinder 510, which separates the combustion chamber 502 and the flue pipe 503 in the inner cavity of the heat exchange cylinder 510. The combustion chamber 502 and the flue pipe 503 are connected. The bottom end of the combustion chamber 502 is connected to the inlet 501. The flue pipe 540 is connected to the flue pipe 503. The burner inserted into the heat exchange cylinder 510 is located in the combustion chamber 502.

[0044] Since the combustion of the burner produces flue gas, the flue gas can flow from the combustion chamber 502 to the exhaust chamber 503, and then be discharged outward through the exhaust pipe 540. This prevents the flue gas from accumulating in the combustion chamber 502 and allows the flue gas to be removed in time, ensuring stable combustion of the burner.

[0045] The exhaust pipe 540 can be connected to an exhaust fan to accelerate the airflow in the exhaust pipe 540, speed up the exhaust, and allow the smoke to be discharged as quickly as possible.

[0046] Furthermore, the baffle 530 is cylindrical, with a combustion chamber 502 formed on its inner side, and an exhaust chamber 503 formed between the outer wall of the baffle 530 and the inner wall of the heat exchange cylinder 510. The top of the combustion chamber 502 is connected to the top of the exhaust chamber 503. Due to the upward tendency of hot gas, the flue gas is more easily directed from the top of the combustion chamber 502 to the exhaust chamber 503 under the action of the airflow, so as to facilitate the smooth discharge of the flue gas.

[0047] An embodiment of this utility model provides a heater, such as... Figure 4-5As shown, it includes a burner assembly, a main fan 600, and a heat exchanger assembly of any of the above embodiments. For a detailed description of the heat exchanger assembly, please refer to the above embodiments, which will not be repeated here.

[0048] The burner assembly includes a burner 100, which is located within a heat exchange cylinder 510. The burner 100 is inserted into the heat exchange cylinder 510 through an inlet at the bottom end of the cylinder. This inlet also allows secondary air to enter, providing sufficient air for combustion. When the burner 100 is operating, the heat exchange assembly absorbs heat radiated from the burner 100, reducing heat loss and improving heat exchange efficiency. The main fan 600's outlet faces the heat exchange fins 520, blowing the heated air around the fins outwards for user heating.

[0049] In some embodiments, such as Figure 4 and Figure 5 As shown, the heater also includes a housing 700, and the burner assembly, heat exchanger assembly and main fan 600 are all fixed inside the housing 700. The housing 700 is provided with a heating outlet 710. The air outlet of the main fan 600, the heat exchanger assembly and the heating outlet 710 are arranged sequentially along the air blowing direction of the main fan 600. The heat exchanger assembly absorbs the heat generated by the combustion of the burner 100, and then heats the air around the heat exchange fins 520. The main fan 600 then blows the heated air out through the heating outlet 710 to form hot air for the user to warm up.

[0050] The burner assembly will be described in detail below.

[0051] In some embodiments, such as Figure 6-7 As shown, the burner assembly also includes an air inlet seat 200 and a gas assembly 300. The burner 100 is fixed to the air inlet seat 200, which provides support for the burner 100, ensuring its stability. The burner 100 includes a vertically arranged ejector tube 110 and a vertically arranged combustion tube 120, meaning that the axial directions of both the ejector tube 110 and the combustion tube 120 are parallel to the vertical direction. The lower end of the ejector tube 110 is connected to the air inlet seat 200, and the upper end of the ejector tube 110 is connected to the combustion tube 120. The circumferential surface of the combustion tube 120 is provided with multiple flame holes 121. The gas assembly 300 includes a nozzle 310 located below the ejector tube 110, with the nozzle 310 facing the ejector tube 110.

[0052] Nozzle 310 can inject gas into ejector tube 110. Under the action of airflow, air and gas enter ejector tube 110 together, then flow to combustion tube 120 and mix inside combustion tube 120. The mixed gas can be ejected from flame hole 121. After igniting the mixed gas, a flame is formed on the outer periphery of combustion tube 120. This structure can be adapted to the heat exchanger assembly of the above embodiment, and burner 100 can be inserted into heat exchange cylinder.

[0053] In some embodiments, the air intake seat 200 is provided with an air intake chamber 210, and an air inlet communicating with the air intake chamber 210 is provided on the air intake seat 200. Outside air can enter the air intake chamber 210 through the air inlet and then flow to the burner 100. The ejector tube 110 is located at the top of the air intake seat 200, and the lower end of the ejector tube 110 communicates with the air intake chamber 210. The nozzle 210 is located inside the air intake chamber 210.

[0054] By setting up an air intake chamber 210, the influence of external airflow on the gas injected by the nozzle 210 is prevented, ensuring that the gas can be smoothly injected into the burner 100. At the same time, it plays a role in isolating and sealing the gas to prevent gas leakage.

[0055] Furthermore, a blower 400 for blowing air into the air intake chamber 210 is fixed at the air inlet, and an air guide structure 410 is provided inside the air intake chamber 210 to guide the airflow blown by the blower 400 to the ejector tube 110. The blower 400 can blow air into the air intake chamber 210, increasing the primary air supply, and the air guide structure 410 then guides the air to the ejector tube 110, making the air flow more smoothly into the ejector tube 110. Thus, this embodiment can increase the primary air supply, making the combustion of the gas more complete and increasing the heat load.

[0056] Furthermore, the top of the air intake seat 200 is provided with multiple secondary air passages 220 that communicate with the air intake chamber 210. The secondary air passages 220 are arranged around the ejector tube 110. Under the action of the air guide structure 410, part of the air blown out by the blower 400 is blown towards the ejector tube 110, and the other part can be blown out from the secondary air passages 220 and then blown towards the outer periphery of the combustion tube 120. This provides secondary air for the combustion of the combustion tube 120, making the combustion of the gas more complete and further improving the heat load.

[0057] In some embodiments, such as Figure 8As shown, a sealing sleeve 230 is provided on the top of the air inlet seat 200. The sealing sleeve 230 is fitted onto the outside of the burner 100, and the secondary air passage is located on the inside of the sealing sleeve 230. The sealing sleeve 230 acts as a limit and guide for the airflow blown out from the secondary air passage, causing the secondary air to blow upwards and reach the outer periphery of the combustion tube 120 as much as possible. At the same time, the heat exchanger can be fixed to the top of the sealing sleeve 230, which serves as a seal to prevent leakage of fuel gas and / or exhaust gas generated during combustion.

[0058] In this embodiment, the sealing sleeve 230 can be fixedly connected to the top of the air intake seat 200, or the sealing sleeve 230 can be integrally formed with the air intake seat 200.

[0059] In some embodiments, such as Figure 6-7 As shown, the air inlet is located on the side of the air intake seat 200. The air guide structure 410 is an air guide plate that is inclined relative to the horizontal direction. The air guide plate is directly opposite the air outlet of the blower 400. The height of the air guide plate gradually increases in the blowing direction of the blower 400. When the blower 400 blows air outward, the airflow blows onto the air guide plate, then flows upward along the air guide plate, and then guides the airflow to blow towards the ejector pipe 110 at the top of the air intake seat 200.

[0060] This embodiment uses a side-intake air intake method to avoid direct airflow onto the injector tube 110, thus preventing excessively rapid airflow from affecting the fire. Simultaneously, the blower 400 is located on the side of the air intake seat 200, which reduces the overall height of the burner assembly.

[0061] In some embodiments, such as Figure 7 As shown, there are two nozzles 310. The two nozzles 310 simultaneously inject gas into the ejector tube 110, which can increase the gas supply and improve the heat load.

[0062] In some embodiments, such as Figure 6 As shown, an ignition needle 130 and a thermocouple 140 are also fixed on the intake seat 200. Both the ignition needle 130 and the thermocouple 140 are close to the combustion tube 120. The ignition needle 130 is used to ignite the gas ejected from the ignition hole to form a flame on the outer periphery of the combustion tube 120. The thermocouple 140 is used to detect the temperature near the combustion tube 120.

[0063] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A heat exchanger assembly, characterized in that: It includes a heat exchange cylinder, the top of which is closed, and the bottom of which is provided with an inlet for inserting a burner. The surface of the heat exchange cylinder is provided with multiple heat exchange fins.

2. The heat exchanger assembly according to claim 1, characterized in that: The inner wall of the heat exchange cylinder is also provided with protruding heat-absorbing fins.

3. The heat exchanger assembly according to claim 1, characterized in that: An airflow channel is formed between adjacent heat exchange fins.

4. The heat exchanger assembly according to claim 3, characterized in that: The heat exchange fins are disposed on the circumferential surface of the heat exchange cylinder and are distributed along the axial direction of the heat exchange cylinder.

5. The heat exchanger assembly according to claim 4, characterized in that: The heat exchange fins are sleeved on the outside of the heat exchange cylinder, and baffles extending towards the bottom of the heat exchange cylinder are provided on both sides of the heat exchange fins. The lower end of the baffles abuts against the adjacent heat exchange fins located below it; all baffles are arranged in parallel.

6. The heat exchanger assembly according to claim 1, characterized in that: It also includes a flue pipe; a baffle is provided inside the heat exchange cylinder, the baffle separates the combustion chamber and the flue pipe in the inner cavity of the heat exchange cylinder, the combustion chamber and the flue pipe are connected, the bottom end of the combustion chamber is connected to the inlet, the flue pipe is connected to the flue pipe, and the burner inserted into the heat exchange cylinder is located in the combustion chamber.

7. The heat exchanger assembly according to claim 6, characterized in that: The partition is cylindrical, and a combustion chamber is formed on the inner side of the partition. The top of the combustion chamber is connected to the top of the exhaust chamber.

8. A heater, characterized in that: It includes a burner assembly, a main fan, and a heat exchanger assembly as described in any one of claims 1-7; the burner assembly includes a burner located in a heat exchange cylinder, and the outlet of the main fan faces the heat exchange fins.

9. The heater according to claim 8, characterized in that: The burner assembly further includes an air inlet seat and a gas assembly; the burner is fixed on the air inlet seat, and the burner includes a vertically arranged ejector tube and a vertically arranged combustion tube. The lower end of the ejector tube is connected to the air inlet seat, and the upper end is connected to the combustion tube. The circumferential surface of the combustion tube is provided with multiple flame holes; the gas assembly includes a nozzle located below the ejector tube, and the nozzle is arranged facing the ejector tube.

10. The heater according to claim 9, characterized in that: The air intake seat is provided with an air intake chamber, and the air intake seat is provided with an air inlet communicating with the air intake chamber; the ejector tube is located at the top of the air intake seat, and the lower end of the ejector tube is communicating with the air intake chamber, and the nozzle is located inside the air intake chamber.

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