A switch device for a heater inlet and outlet air duct and the heater

Abstract

The utility model relates to air duct switch technical field, concretely relates to a kind of for heater air inlet and outlet air duct switch device and the heater, including shell, air inlet, air outlet and air vent are set up on shell, air cavity is provided in shell, and air cavity is communicated with air inlet, air outlet and air vent, air inlet and air vent are oppositely arranged, fan is set in the fan outside shell at air inlet, air vent is used to communicate with air inlet and outlet air duct, air outlet is set in the side between air inlet and air vent, switch piece is set on shell, switch piece includes damper set in air cavity, drive piece is set on shell for driving damper to move between opening position and closing position, when damper is in opening position, damper will air vent be divided into inlet and outlet, and air inlet and air outlet are communicated with inlet and outlet respectively to form air supply duct and exhaust duct, when damper is in closing position, damper seals air vent;The utility model improves heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air duct switch technology, and in particular to a switch device for the air duct inlet and outlet of a heater and the heater. Background Technology

[0002] Existing heaters, heat exchangers, air conditioners, etc., have ventilation ducts. A damper structure is needed to open and close the ventilation ducts so as to selectively receive outside air.

[0003] For example, a patent application with publication number CN117774609A, published on March 29, 2024, entitled "A Switching Device, Air Duct Assembly, and Air Conditioner," is disclosed. The switching device includes a door frame and a switching element. The door frame has a vent extending in a front-to-back direction. The switching element is movably connected to the door frame between an open position and a closed position, and is configured to be inserted into the door frame from front to back. The switching element includes a damper, which opens the vent when the switching element is in the open position and closes the vent when the switching element is in the closed position. Existing vents are prone to air inlet and outlet conflicts, reducing heat exchange efficiency. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a switch device for the air inlet and outlet duct of a heater and the heater, so as to solve the problem of reduced heat exchange efficiency.

[0005] Based on the above objectives, this utility model provides a switch device for the air inlet and outlet ducts of a heater, comprising a housing, an air inlet, an air outlet, and a vent. The housing contains a ventilation cavity communicating with the air inlet, the air outlet, and the vent. The air inlet and the vent face each other. A fan is installed at the air inlet outside the housing. The vent communicates with the air inlet and outlet ducts. The air outlet is located on one side between the air inlet and the vent. The housing has a switch element, including a damper installed within the ventilation cavity. The housing also has a drive element for moving the damper between an open and closed position. When the damper is in the open position, it divides the vent into an inlet and an outlet, with the air inlet and the air outlet communicating with the inlet and outlet respectively to form a supply air duct and an exhaust air duct. When the damper is in the closed position, it closes the vent.

[0006] Optionally, the driving component includes a control motor located on the housing, the output end of which is connected to a rotating shaft extending into the ventilation cavity, and the rotating shaft is connected to the damper.

[0007] Optionally, an inclined guide surface is provided on one side of the ventilation cavity opposite to the air outlet. The end of the inclined guide surface away from the fan is closer to the air outlet than the other end of the inclined guide surface. The end of the inclined guide surface away from the fan is connected to one side of the ventilation outlet, and the other end of the inclined guide surface is connected to one side of the air inlet.

[0008] Optionally, a first baffle wall is provided on the side of the air outlet near the air inlet, located inside the ventilation cavity. When the damper is in the open position, and the damper divides the ventilation opening into an inlet and an outlet, one end of the damper abuts against the first baffle wall, and the other end of the damper is located in the ventilation opening, dividing the ventilation opening into an inlet and an outlet.

[0009] Optionally, a second baffle is provided on the side of the air outlet away from the air inlet, located inside the ventilation cavity. The second baffle is located on one side of the air outlet. When the damper is in the closed position and closes the air outlet, one end of the damper abuts against the second baffle on one side of the air outlet, and the other end of the damper abuts against the side wall on the other side of the air outlet.

[0010] Optionally, an inclined guide plate is provided on one side of the damper located in the ventilation cavity. The upper end of the inclined guide plate is further away from the air outlet than the lower end. The side of the ventilation outlet away from the air outlet is provided with a matching ramp that cooperates with the inclined guide plate. When the damper is in the open position, the width of the upper part of the inlet is smaller than the width of the lower part of the inlet.

[0011] A heater having a switching device, the heater including a heating cylinder, wherein an air inlet and outlet duct for mounting the switching device is provided on the side wall of the heating cylinder.

[0012] Optionally, the air inlet and outlet duct is provided with a partition, which divides the air inlet and outlet duct into an inlet channel and an outlet channel. When the air damper is in the open position, the inlet channel and the outlet channel are respectively connected to the air inlet and the air outlet.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a switch device for the inlet and outlet air ducts of a heater. When the damper needs to be in the open position, the driving component drives the damper to the open position. At this time, the damper divides the ventilation opening into an inlet and an outlet, and the inlet and outlet are connected to the inlet and outlet respectively to form a supply air duct and an exhaust air duct, realizing unidirectional air intake and unidirectional air exhaust, thus improving heat exchange efficiency. When the damper needs to be in the closed position, the driving component drives the damper to the closed position. At this time, the damper closes the ventilation opening, and outside air cannot be connected to the inlet and outlet air ducts through the ventilation opening. In addition, if the fan fails to stop rotating and outside air is not needed to enter the inlet and outlet air ducts, the damper can be in the closed position. Outside air enters the ventilation cavity through the inlet under the action of the fan. After the damper closes the ventilation opening, the air in the ventilation cavity can be discharged through the outlet, which also facilitates the cleaning of part of the space inside the ventilation cavity. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 4 for Figure 3 Schematic diagram of the AA section structure;

[0019] Figure 5 This is a bottom view of the structure of this utility model;

[0020] Figure 6 for Figure 5 Schematic diagram of the BB section structure;

[0021] Figure 7 This is a schematic diagram showing the connection between the switching device and the heater's inlet and outlet air ducts of this utility model.

[0022] Figure 8 for Figure 7 A schematic diagram of the local internal structure.

[0023] In the diagram: 1. Fan; 2. Housing; 3. Ventilation cavity; 4. Air inlet; 5. Air outlet; 6. Ventilation opening; 7. Damper; 8. Control motor; 9. Shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 6 As shown, a switch device for a heater inlet / outlet air duct includes a housing 2. The housing 2 has an air inlet 4, an air outlet 5, and a vent 6. The housing 2 has a ventilation cavity 3 that communicates with the air inlet 4, the air outlet 5, and the vent 6. The air inlet 4 and the vent 6 are arranged facing each other. A fan 1 is provided at the air inlet 4 outside the housing 2. The vent 6 is used to communicate with the inlet / outlet air duct. The air outlet 5 is located on one side between the air inlet 4 and the vent 6. The housing 2 has a switch element, which includes a damper 7 disposed in the ventilation cavity 3. The housing 2 has a drive element for driving the damper 7 to move between an open position and a closed position. When the damper 7 is in the open position, the damper 7 divides the vent 6 into an inlet and an outlet, and the air inlet 4 and the air outlet 5 communicate with the inlet and outlet respectively to form a supply air duct and an exhaust air duct. When the damper 7 is in the closed position, the damper 7 closes the vent 6.

[0027] In use, when the damper 7 needs to be in the open position, the drive unit drives the damper 7 to the open position. At this time, the damper 7 divides the vent 6 into an inlet and an outlet, and the inlet 4 and outlet 5 are connected to the inlet and outlet respectively to form an air supply duct and an exhaust duct, realizing unidirectional air intake and unidirectional air exhaust, thus improving heat exchange efficiency. When the damper 7 needs to be in the closed position, the drive unit drives the damper 7 to the closed position. At this time, the damper 7 closes the vent 6, and outside air cannot be connected to the air supply and exhaust duct through the vent 6. In addition, if the fan 1 fails to stop rotating and outside air is not needed to enter the air supply and exhaust duct, the damper 7 can be in the closed position. Outside air enters the ventilation cavity 3 through the inlet 4 under the action of the fan 1. After the damper 7 closes the vent 6, the air in the ventilation cavity 3 can be discharged through the outlet 5, which also facilitates the cleaning of part of the space inside the ventilation cavity 3.

[0028] The driving component includes a control motor 8 located on the housing 2. The output end of the control motor 8 is connected to a rotating shaft 9 that extends into the ventilation cavity 3. The rotating shaft 9 is connected to the damper 7. When the control motor 8 is started, it drives the rotating shaft 9 to rotate, thereby moving the damper 7 between the open and closed positions.

[0029] When the damper 7 needs to be in the open position, the control motor 8 controls the rotating shaft 9 and the damper 7 to rotate counterclockwise, so that the damper 7 is in the open position. At this time, the damper 7 divides the ventilation opening 6 into an inlet and an outlet, and the air inlet 4 and the air outlet 5 are connected to the inlet and the outlet respectively to form an air supply duct and an air exhaust duct.

[0030] When the damper 7 needs to be in the closed position, the control motor 8 controls the rotating shaft 9 and the damper 7 to rotate clockwise, so that the damper 7 is in the closed position. At this time, the damper 7 closes the ventilation opening 6, and the outside air cannot communicate with the inlet and outlet air duct through the ventilation opening 6. In addition, if the fan 1 fails and cannot stop rotating, and it is not necessary for the outside air to enter the inlet and outlet air duct for heat exchange, the damper 7 can be in the closed position. The outside air enters the ventilation cavity 3 through the air inlet 4 under the action of the fan 1. After the damper 7 closes the ventilation opening 6, the air in the ventilation cavity 3 can be discharged through the air outlet 5, which also facilitates the cleaning of part of the space inside the ventilation cavity 3.

[0031] An inclined guide surface is provided on one side of the ventilation cavity 3 opposite to the air outlet 5. The end of the inclined guide surface away from the fan 1 is closer to the air outlet 5 than the other end of the inclined guide surface. The end of the inclined guide surface away from the fan 1 is connected to the ventilation port 6, and the other end of the inclined guide surface is connected to the air inlet 4. The inclined guide surface facilitates the smooth flow of air entering the ventilation cavity 3 through the air inlet 4 to the ventilation port 6 and then into the air inlet and outlet ducts.

[0032] The air outlet 5 is provided with a first baffle wall located inside the ventilation cavity 3 on the side near the air inlet 4. When the damper 7 is in the open position, the damper 7 divides the ventilation opening 6 into an inlet and an outlet. One end of the damper 7 abuts against the first baffle wall, and the other end of the damper 7 is located in the ventilation opening 6, dividing the ventilation opening 6 into an inlet and an outlet. When the first baffle wall abuts against one end of the damper 7, it restricts the damper 7 from continuing to rotate counterclockwise.

[0033] The air outlet 5 is located on the side away from the air inlet 4, and a second baffle is provided inside the ventilation cavity 3. The second baffle is located on one side of the ventilation opening 6. When the damper 7 is in the closed position and closes the ventilation opening 6, one end of the damper 7 abuts against the second baffle on one side of the ventilation opening 6, and the other end of the damper 7 abuts against the side wall on the other side of the ventilation opening 6. The second baffle is provided and abuts against one end of the damper 7, which restricts the damper 7 from continuing to rotate clockwise, so that the damper 7 does not move in the closed position.

[0034] An inclined guide plate is provided on one side of the damper 7 located in the ventilation cavity 3. The upper end of the inclined guide plate is further away from the air outlet 5 than the lower end. The ventilation opening 6 is provided with a matching ramp on the side away from the air outlet 5, which cooperates with the inclined guide plate. When the damper 7 is in the open position, the width of the upper part of the inlet is smaller than the width of the lower part of the inlet. The inclined guide plate facilitates the downward flow of cool air from the outside after entering the air inlet and outlet duct, and the upward flow of hot air in the air inlet and outlet duct.

[0035] like Figures 7 to 8 As shown, a heater has a switching device, and the heater includes a heating cylinder, which is assembled from two semi-cylinders, as shown. Figures 7 to 8 The image shows a semi-cylinder. The heating cylinder has an inlet and outlet air duct on its side wall for installing a switch device. A partition is installed in the inlet and outlet air duct, which divides the air duct into an inlet channel and an outlet channel. The partition extends into the heating cylinder, which helps to reduce the conflict between the incoming and outgoing air. The switch device is located at the inlet and outlet air duct, which can realize the simultaneous closing and opening of the air supply channel and the air exhaust channel, making the operation convenient and quick. When the damper 7 is in the open position, the inlet channel and the outlet channel are connected to the air inlet 4 and the air outlet 5, respectively.

[0036] When air needs to enter the heating cylinder, the damper 7, in the open position, divides the vent 6 into an inlet and an outlet. The inlet 4 and outlet 5 are connected to the inlet and outlet respectively, forming an air supply duct and an exhaust duct. The air supply duct is connected to the inlet duct, allowing outside air to enter the heater through the inlet duct. The exhaust duct is connected to the outlet duct, and the air duct inside the heater is unidirectional and annular. Outside cold air can enter the heater through the inlet duct, blowing out the hot air in the circulating air duct inside the heater. The exhaust duct is connected to the outlet duct, allowing the hot air inside the heater to be discharged to the external environment of the switching device through the outlet duct and outlet 5, forming a connection between the inlet and outlet. When air does not need to enter the heating cylinder, the damper 7, in the closed position, closes the vent 6. Both the inlet and outlet ducts in the vent 6 are closed, and the air inside the heater does not circulate with the outside air. In this way, the hot air inside the heater cannot escape, achieving the goal of energy saving.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0038] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A switching device for the air inlet and outlet ducts of a heater, comprising a housing, characterized in that, The housing has an air inlet, an air outlet, and a vent. A ventilation cavity is provided inside the housing, communicating with the air inlet, air outlet, and vent. The air inlet and vent face each other. A fan is installed at the air inlet outside the housing. The vent communicates with an air inlet / outlet duct. The air outlet is located on one side between the air inlet and the vent. The housing has a switch, including a damper located within the ventilation cavity. A drive mechanism is provided on the housing to move the damper between an open and closed position. When the damper is in the open position, it divides the vent into an inlet and an outlet, with the air inlet and air outlet communicating with the inlet and outlet respectively to form a supply air duct and an exhaust air duct. When the damper is in the closed position, it closes the vent.

2. The switch device for the inlet and outlet air duct of a heater according to claim 1, characterized in that, The drive unit includes a control motor located on the housing, and the output end of the control motor is connected to a rotating shaft that extends into the ventilation cavity, and the rotating shaft is connected to the damper.

3. The switch device for the inlet and outlet air duct of a heater according to claim 1, characterized in that, An inclined guide surface is provided on one side of the ventilation cavity opposite to the air outlet. The end of the inclined guide surface away from the fan is closer to the air outlet than the other end of the inclined guide surface. The end of the inclined guide surface away from the fan is connected to the ventilation outlet side, and the other end of the inclined guide surface is connected to the air inlet side.

4. A switch device for the inlet and outlet air ducts of a heater according to claim 1, characterized in that, The air outlet is provided with a first baffle wall located inside the ventilation cavity on the side near the air inlet. When the damper is in the open position, the damper divides the ventilation opening into an inlet and an outlet. One end of the damper abuts against the first baffle wall, and the other end of the damper is located in the ventilation opening, dividing the ventilation opening into an inlet and an outlet.

5. A switch device for the inlet and outlet air ducts of a heater according to claim 4, characterized in that, A second baffle is provided on the side of the air outlet away from the air inlet, located inside the ventilation cavity. The second baffle is located on one side of the air outlet. When the damper is in the closed position and closes the air outlet, one end of the damper abuts against the second baffle on one side of the air outlet, and the other end of the damper abuts against the side wall on the other side of the air outlet.

6. A switch device for the inlet and outlet air ducts of a heater according to claim 1, characterized in that, An inclined guide plate is provided on one side of the damper located in the ventilation cavity. The upper end of the inclined guide plate is further away from the air outlet than the lower end. The side of the ventilation outlet away from the air outlet is provided with a matching ramp that cooperates with the inclined guide plate. When the damper is in the open position, the width of the upper part of the inlet is smaller than the width of the lower part of the inlet.

7. A heater, characterized in that: The heater has a switching device, which is the switching device according to any one of claims 1-6. The heater includes a heating cylinder, and an air inlet and outlet duct for installing the switching device is provided on the side wall of the heating cylinder.

8. A heater according to claim 7, characterized in that, A partition is provided in the air inlet and outlet duct, which divides the air inlet and outlet duct into an inlet channel and an outlet channel. When the air damper is in the open position, the inlet channel and the outlet channel are respectively connected to the air inlet and the air outlet.

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