Atomizer and gas water heater

Abstract

This utility model relates to the field of atomizer technology, and more particularly to an atomizer and a gas water heater. The atomizer includes a piezoelectric ceramic plate and a corrosion-resistant component. The corrosion-resistant component has a receiving cavity, and an opening communicating with the receiving cavity is formed at its first end along the height direction. Along the height direction, one end of the piezoelectric ceramic plate extends into the opening and is located within the receiving cavity, forming a colloidal space between it and the inner top wall of the receiving cavity. An overflow channel is provided between the circumferential outer wall of the piezoelectric ceramic plate and the circumferential inner wall of the receiving cavity, and the overflow channel communicates with the colloidal space. The colloidal space is filled with colloidal material, and the piezoelectric ceramic plate is bonded and fixed to the corrosion-resistant component by the colloidal material. The gas water heater includes the above-mentioned atomizer. The colloidal material is evenly distributed between the piezoelectric ceramic plate and the inner top wall of the receiving cavity due to the obstruction of the inner wall of the receiving cavity, effectively reducing air bubbles and allowing the heat generated by the high-frequency vibration of the piezoelectric ceramic plate to be evenly conducted to the corrosion-resistant component, improving the overall temperature rise uniformity of the piezoelectric ceramic plate.

Description

Technical Field

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

[0002] In a condensing gas water heater, an atomizer atomizes the condensate dripping from the outer wall of the heat exchange tubes into a water mist, which is then discharged along with the flue gas after heat exchange through the exhaust shell. The piezoelectric ceramic plate inside the atomizer receives a high-frequency electrical signal generated by an ultrasonic generator and vibrates at the same frequency, thereby transferring the high-frequency mechanical vibration energy to the liquid to produce atomization.

[0003] In existing atomizers, even with anti-corrosion treatment, the piezoelectric ceramic sheet can still corrode if immersed in acidic condensate for extended periods, affecting its atomization capability. Related technologies improve corrosion resistance by attaching corrosion-resistant components, such as glass sheets, to the piezoelectric ceramic sheet. However, the adhesive used to fix the components to the ceramic sheet can lead to uneven application of the adhesive, resulting in numerous air bubbles. This prevents the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet from being evenly transferred to the components, causing localized overheating and damage to the ceramic sheet. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide an atomizer that can effectively reduce air bubbles between the anti-corrosion parts and the piezoelectric ceramic sheet, so that the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet can be evenly conducted to the anti-corrosion parts, thereby improving the overall temperature rise uniformity of the piezoelectric ceramic sheet.

[0005] The second technical problem solved by this utility model is to provide a gas water heater that can effectively reduce air bubbles between the anti-corrosion parts and the piezoelectric ceramic sheet, so that the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet can be evenly conducted to the anti-corrosion parts, thereby improving the overall temperature rise uniformity of the piezoelectric ceramic sheet.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] An atomizer includes a piezoelectric ceramic plate and a corrosion-resistant component, wherein the corrosion-resistant component has a receiving cavity, and the first end of the corrosion-resistant component along the height direction has an opening communicating with the receiving cavity;

[0008] Along the height direction, one end of the piezoelectric ceramic sheet extends into the opening and is located within the receiving cavity, forming a colloidal space between it and the inner top wall of the receiving cavity; an overflow channel is provided between the circumferential outer wall of the piezoelectric ceramic sheet and the circumferential inner wall of the receiving cavity, and the overflow channel is connected to the opening and the colloidal space respectively; the colloidal space is filled with colloidal material, and the piezoelectric ceramic sheet is bonded and fixed to the anti-corrosion component by the colloidal material.

[0009] The atomizer described in this utility model has the following advantages compared with the prior art:

[0010] The piezoelectric ceramic sheet and the anti-corrosion component are bonded together with an adhesive. The piezoelectric ceramic sheet compresses the adhesive within the cavity, causing the adhesive to flow from areas with more adhesive to areas with less adhesive due to the obstruction of the inner wall of the cavity. This results in a uniform distribution of the adhesive between the piezoelectric ceramic sheet and the inner top wall of the cavity. Simultaneously, excess adhesive and air in the adhesive space are squeezed into the overflow channel, and air is discharged from the opening of the anti-corrosion component. This effectively reduces air bubbles between the piezoelectric ceramic sheet and the inner top wall of the cavity, achieving a tight bond between the piezoelectric ceramic sheet and the anti-corrosion component. This allows the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet to be evenly conducted to the anti-corrosion component, preventing excessive local temperature rise of the piezoelectric ceramic sheet and improving the overall temperature uniformity of the piezoelectric ceramic sheet. This, in turn, improves the safety and atomization performance of the piezoelectric ceramic sheet.

[0011] In one embodiment, the thickness of the colloidal space along the height direction is 10 μm to 500 μm.

[0012] In one embodiment, the overflow channel is formed between the outer circumferential wall of the piezoelectric ceramic sheet and the inner wall of the receiving cavity, and the distance between the outer circumferential wall of the piezoelectric ceramic sheet and the inner wall of the receiving cavity is 0.1 mm to 0.5 mm.

[0013] In one embodiment, along the height direction, the other end of the piezoelectric ceramic sheet is coplanar with the first end.

[0014] The first technical problem mentioned above is solved by the following technical solution:

[0015] An atomizer includes a piezoelectric ceramic plate and a corrosion-resistant component, wherein the corrosion-resistant component has a receiving cavity, and the first end of the corrosion-resistant component along the height direction has an opening communicating with the receiving cavity;

[0016] Along the height direction, one end of the piezoelectric ceramic sheet covers the opening; the receiving cavity is filled with colloid, and the piezoelectric ceramic sheet is bonded and fixed to the anti-corrosion component by the colloid.

[0017] The atomizer described in this utility model has the following advantages compared with the prior art:

[0018] The piezoelectric ceramic sheet and the corrosion-resistant component are bonded together with an adhesive. By pressing the adhesive within the cavity with the piezoelectric ceramic sheet, the adhesive flows from areas with more adhesive to areas with less adhesive due to the obstruction of the inner wall of the cavity. This results in a uniform distribution of the adhesive between the piezoelectric ceramic sheet and the inner top wall of the cavity, effectively reducing air bubbles between them. This achieves a tight bond between the piezoelectric ceramic sheet and the corrosion-resistant component, allowing the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet to be evenly conducted to the corrosion-resistant component. This prevents excessive local temperature rise of the piezoelectric ceramic sheet and improves the overall temperature uniformity of the piezoelectric ceramic sheet, thereby enhancing its safety and atomization performance.

[0019] In one embodiment, the first end has an overflow channel that communicates with the receiving cavity and the outside of the receiving cavity respectively.

[0020] In one embodiment, the first end is provided with a plurality of overflow channels spaced apart circumferentially along the receiving cavity.

[0021] In one embodiment, the vertical distance between one end of the piezoelectric ceramic sheet and the inner top wall of the receiving cavity is 10 μm to 500 μm.

[0022] In one embodiment, the end of the overflow channel away from the receiving cavity extends through the circumferential outer side of the corrosion-resistant component and forms an overflow outlet.

[0023] In one embodiment, the corrosion-resistant component is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet.

[0024] The second technical problem mentioned above is solved by the following technical solution:

[0025] Gas water heaters, including the atomizers mentioned above.

[0026] The gas water heater described in this utility model has the following advantages compared with the prior art:

[0027] By pressing the colloid within the receiving cavity with a piezoelectric ceramic sheet, the colloid flows from areas with more colloid to areas with less colloid due to the obstruction of the inner wall of the receiving cavity. This results in a uniform distribution of the colloid between the piezoelectric ceramic sheet and the inner top wall of the receiving cavity, effectively reducing air bubbles between them. This achieves a tight bond between the piezoelectric ceramic sheet and the corrosion-resistant component, allowing the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet to be evenly conducted to the corrosion-resistant component. This prevents excessive local temperature rise of the piezoelectric ceramic sheet and improves the overall temperature uniformity of the piezoelectric ceramic sheet, thereby enhancing its safety and atomization performance. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the atomizer provided in Embodiment 1 of this utility model;

[0029] Figure 2 This is an exploded view of the piezoelectric ceramic sheet and corrosion-resistant component provided in Embodiment 1 of this utility model;

[0030] Figure 3 This is a cross-sectional view of the bonding structure between the piezoelectric ceramic sheet and the anti-corrosion component provided in Embodiment 1 of this utility model;

[0031] Figure 4 This is an exploded view of the piezoelectric ceramic sheet and corrosion-resistant component provided in Embodiment 2 of this utility model;

[0032] Figure 5 This is a cross-sectional view of the bonding structure between the piezoelectric ceramic sheet and the anti-corrosion component provided in Embodiment 2 of this utility model.

[0033] The component names and labels in the diagram are as follows:

[0034] 10. Housing; 20. Sealing sleeve; 201. Mounting groove; 30. Ultrasonic generator; 1. Piezoelectric ceramic sheet;

[0035] 2a. Corrosion-resistant component; 21a. Receiving cavity; 22a. Overflow channel; 23a. First end; 24a. Second end; 3a. Colloid;

[0036] 2b, anti-corrosion component; 21b, receiving cavity; 22b, overflow channel; 220b, overflow port; 23b, first end; 24b, second end; 3b, colloid. Detailed Implementation

[0037] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, terms such as "height direction" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1

[0043] This embodiment proposes a gas water heater, which is a condensing gas water heater. The gas water heater includes a combustion device and a condensing device. The condensing device atomizes the condensate dripping from the outer wall of the heat exchange tube into water mist through an atomizer, and then discharges it along with the flue gas after heat exchange through the exhaust shell. Since gas water heaters are existing technology, the specific structure and working principle of gas water heaters will not be described in detail.

[0044] like Figure 1 As shown, this embodiment also proposes an atomizer, which includes a housing 10, a sealing sleeve 20, an ultrasonic generator 30, a piezoelectric ceramic sheet 1, and a corrosion-resistant component 2a. The corrosion-resistant component 2a is bonded to the piezoelectric ceramic sheet 1. The piezoelectric ceramic sheet 1 with the corrosion-resistant component 2a bonded to it is then installed in the mounting groove 201 of the sealing sleeve 20, with the piezoelectric ceramic sheet 1 facing the inside of the sealing sleeve 20. The corrosion-resistant component 2a is exposed at the opening of the mounting groove 201. The ultrasonic generator 30 is powered by an external power source and is electrically connected to the piezoelectric ceramic sheet 1 through a wiring harness. The high-frequency electrical signal (typically between 1.7MHz and 2.4MHz) generated by the ultrasonic generator 30 is transmitted to the piezoelectric ceramic sheet 1. The piezoelectric ceramic sheet 1 performs high-frequency mechanical vibration at the same frequency and transmits the high-frequency mechanical vibration to the corrosion-resistant component 2a, thereby achieving atomization of condensed water through the corrosion-resistant component 2a.

[0045] In this embodiment, the anti-corrosion component 2a is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet. These three types of glass sheets not only have acid resistance but also high temperature resistance and thermal conductivity, which is beneficial for the glass sheet to be heated during vibration and for heat dissipation during vibration, thus protecting the piezoelectric ceramic sheet 1. In other embodiments, the anti-corrosion component 2a can also be made of other anti-corrosion materials, as long as it can protect the piezoelectric ceramic sheet 1 and achieve the atomization function of the atomizer. Since the atomizer is existing technology, its specific structure and working principle will not be described in detail.

[0046] In existing atomizers, corrosion resistance is improved by attaching anti-corrosion components to the piezoelectric ceramic sheet. However, uneven adhesion between the anti-corrosion components and the piezoelectric ceramic sheet results in numerous air bubbles. Consequently, the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet cannot be evenly conducted to the anti-corrosion components, leading to excessive local temperature rise of the piezoelectric ceramic sheet and damage to itself.

[0047] To solve the above problems, such as Figure 2 and Figure 3 As shown, the corrosion-resistant component 2a in this embodiment has a receiving cavity 21a, and the first end 23a of the corrosion-resistant component 2a along the height direction has an opening communicating with the receiving cavity 21a. Along the height direction, one end of the piezoelectric ceramic sheet 1 extends into the opening and is located inside the receiving cavity 21a, forming a colloidal space between it and the inner top wall of the receiving cavity 21a. An overflow channel 22a is provided between the circumferential outer wall of the piezoelectric ceramic sheet 1 and the circumferential inner wall of the receiving cavity 21a. The overflow channel 22a communicates with both the opening and the colloidal space. The colloidal space is filled with colloid 3a, and the piezoelectric ceramic sheet 1 is bonded and fixed to the corrosion-resistant component 2a by the colloid 3a. The piezoelectric ceramic sheet 1 and the anti-corrosion component 2a are bonded together by an adhesive 3a. The piezoelectric ceramic sheet 1 presses the adhesive 3a within the receiving cavity 21a, causing the adhesive 3a to flow from areas with more adhesive 3a to areas with less adhesive 3a due to the obstruction of the inner wall of the receiving cavity 21a. This results in the adhesive 3a being evenly distributed between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a. At the same time, excess adhesive 3a and air in the adhesive space are squeezed into the overflow channel 22a, and the air is discharged from the opening of the anti-corrosion component 2a. This effectively reduces the air bubbles that appear between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a, achieving a tight bond between the piezoelectric ceramic sheet 1 and the anti-corrosion component 2a. This allows the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet 1 to be evenly conducted to the anti-corrosion component 2a, preventing excessive local temperature rise of the piezoelectric ceramic sheet 1 and improving the overall temperature rise uniformity of the piezoelectric ceramic sheet 1. This, in turn, improves the safety and atomization performance of the piezoelectric ceramic sheet 1.

[0048] It should be noted that when the piezoelectric ceramic sheet 1 is pressed into the receiving cavity 21a, the other end of the piezoelectric ceramic sheet 1 along the height direction is coplanar with the first end 23a. When the other end of the piezoelectric ceramic sheet 1 along the height direction is coplanar with the first end 23a, the piezoelectric ceramic sheet 1 is bonded in place. At this time, the adhesive 3a between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a forms a uniform adhesive layer. At the same time, the piezoelectric ceramic sheet 1 squeezes out any air bubbles that may exist in the adhesive layer, so that the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet 1 is evenly conducted to the anti-corrosion part 2a.

[0049] For ease of understanding, the bonding process between the piezoelectric ceramic sheet 1 and the corrosion-resistant component 2a is as follows: First, apply an appropriate amount of adhesive to the inner top wall of the receiving cavity 21a, then place the piezoelectric ceramic sheet 1 into the receiving cavity 21a. Using a tooling fixture, the corrosion-resistant component 2a and the piezoelectric ceramic sheet 1 are pressed together. When the other end of the piezoelectric ceramic sheet 1 along the height direction is coplanar with the first end 23a, the pressing of the piezoelectric ceramic sheet 1 is stopped. At this point, excess adhesive is squeezed into the overflow channel 22a. After appropriate pressure holding and curing, the bonding process between the corrosion-resistant component 2a and the piezoelectric ceramic sheet 1 is completed. This bonding process effectively ensures a tight bond between the corrosion-resistant component 2a and the piezoelectric ceramic sheet 1, effectively improving the reliability of the atomizer's atomization. The aforementioned tooling fixture is an assembly device for the piezoelectric ceramic sheet 1 and the corrosion-resistant component 2a; the structure and working process of the assembly device will not be detailed further.

[0050] like Figure 3 As shown, when the piezoelectric ceramic sheet 1 is pressed into the receiving cavity 21a, the thickness H1 of the colloid space along the height direction is 10μm to 500μm. In this embodiment, the thickness H1 can be 10μm, 50μm, 100μm, 150μm, 200μm, 250μm, 300μm, 350μm, 400μm, 450μm, or 500μm, etc., so that the colloid 3a between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a forms a colloid layer of suitable thickness, so as to balance the bonding strength between the piezoelectric ceramic sheet 1 and the receiving cavity 21a and the efficiency of high-frequency vibration and heat conduction. If H1 is too small, it reduces the bonding strength of the piezoelectric ceramic sheet 1, which can easily cause the piezoelectric ceramic sheet 1 to separate from the anti-corrosion part 2a, thus reducing the stability and reliability of the atomizer. If H1 is too large, that is, the adhesive layer between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a is too thick, it will weaken the high-frequency vibration and heat conduction efficiency of the piezoelectric ceramic sheet 1, thus reducing the atomization function of the atomizer.

[0051] like Figure 3As shown, the outer wall of the piezoelectric ceramic sheet 1 along its circumference forms an overflow channel 22a with the inner wall of the receiving cavity 21a. The distance H2 between the outer wall of the piezoelectric ceramic sheet 1 and the inner wall of the receiving cavity 21a (i.e., the width of the overflow channel 22a) is 0.1mm to 0.5mm. In this embodiment, H2 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, or 0.5mm, etc. If H2 is too small, the width of the overflow channel 22a will be too narrow, which will easily lead to poor overflow of the colloid 3a, increasing the difficulty of bonding the piezoelectric ceramic sheet 1. If H2 is too large, the width of the overflow channel 22a will be too wide, causing the piezoelectric ceramic sheet 1 to easily shift position within the receiving cavity 21a, reducing the installation accuracy of the piezoelectric ceramic sheet 1.

[0052] like Figure 2 and Figure 3 As shown, the second end 24a of the anti-corrosion component 2a along the height direction, the inner top wall of the receiving cavity 21a, and the end of the piezoelectric ceramic sheet 1 bonded to the inner top wall of the receiving cavity 21a are all planar. This design facilitates the processing and fabrication of the anti-corrosion component 2a, reducing its cost and processing difficulty. Simultaneously, it ensures that the adhesive layer thickness between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21a remains uniform.

[0053] Example 2

[0054] This embodiment proposes an atomizer, the main difference between this atomizer and the one in the embodiment is that the structure of the anti-corrosion component 2b and the installation position of the piezoelectric ceramic sheet 1 are different.

[0055] like Figure 4 and Figure 5 As shown, the corrosion-resistant component 2b has a receiving cavity 21b, and an opening communicating with the receiving cavity 21b is formed at the first end 23b along the height direction of the corrosion-resistant component 2b. One end of the piezoelectric ceramic sheet 1 covers the opening along the height direction. The receiving cavity 21b is filled with colloid 3b, and the piezoelectric ceramic sheet 1 is bonded and fixed to the corrosion-resistant component 2b by the colloid 3b. By pressing the colloid 3b within the receiving cavity 21b with the piezoelectric ceramic sheet 1, the colloid 3b flows from areas with more colloid 3b to areas with less colloid 3b due to the obstruction of the circumferential inner wall of the receiving cavity 21b. This results in the colloid 3b being evenly distributed between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21b, effectively reducing air bubbles between them. This achieves a tight bond between the piezoelectric ceramic sheet 1 and the anti-corrosion component 2b, allowing the heat generated by the high-frequency vibration of the piezoelectric ceramic sheet 1 to be evenly conducted to the anti-corrosion component 2b. This prevents excessive local temperature rise in the piezoelectric ceramic sheet 1, improves the overall temperature rise uniformity of the piezoelectric ceramic sheet 1, and thus enhances the safety and atomization performance of the piezoelectric ceramic sheet 1.

[0056] like Figure 4As shown, the anti-corrosion component 2b has a first end 23b and a second end 24b along its height direction. The first end 23b has overflow channels 22b that communicate with the receiving cavity 21b and the outside of the receiving cavity 21b, respectively. Specifically, the first end 23b has several overflow channels 22b spaced apart along the circumference of the receiving cavity 21b. By setting several overflow channels 22b, when one end of the piezoelectric ceramic sheet 1 is pressed onto the first end 23b along its height direction, the squeezed colloid 3b quickly overflows into different overflow channels 22b, reducing the bonding difficulty between the piezoelectric ceramic sheet 1 and the anti-corrosion component 2b and improving the bonding efficiency.

[0057] In one embodiment, the first end 23b of the corrosion-resistant component 2b is symmetrically provided with two overflow channels 22b along the circumferential direction, so that the colloid 3b extruded from the receiving cavity 21b overflows into the two overflow channels 22b respectively. In other embodiments, the number of overflow channels 22b may be three or four or more, which is not specifically limited here.

[0058] like Figure 4 As shown, the end of the overflow channel 22b away from the receiving cavity 21b penetrates the circumferential outer side of the anti-corrosion component 2b and forms an overflow port 220b. By forming an overflow port 220b on the circumferential outer side of the anti-corrosion component 2b, excess adhesive 3b can flow out from the overflow port 220b, ensuring that the piezoelectric ceramic sheet 1 and the first end 23b of the anti-corrosion component 2b are tightly bonded. This avoids the formation of numerous air bubbles between the piezoelectric ceramic sheet 1 and the first end 23b of the anti-corrosion component 2b when there is too much adhesive 3b, thus improving the bonding quality between the piezoelectric ceramic sheet 1 and the anti-corrosion component 2b.

[0059] like Figure 5 As shown, one end of the piezoelectric ceramic sheet 1 covers the opening, and the vertical distance between one end of the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21b (i.e., the depth of the receiving cavity 21b) is 10μm to 500μm. In this embodiment, H3 can be 10μm, 50μm, 100μm, 150μm, 200μm, 250μm, 300μm, 350μm, 400μm, 450μm, or 500μm, etc., so that the colloid 3b between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21b forms a colloid layer of suitable thickness, so as to balance the bonding strength between the piezoelectric ceramic sheet 1 and the receiving cavity 21b and the high-frequency vibration and heat conduction efficiency. If H3 is too small, it reduces the bonding strength of the piezoelectric ceramic sheet 1, which can easily lead to the separation of the piezoelectric ceramic sheet 1 from the anti-corrosion component 2b, thus reducing the stability and reliability of the atomizer. If H3 is too large, that is, the adhesive layer between the piezoelectric ceramic sheet 1 and the inner top wall of the receiving cavity 21b is too thick, it will weaken the frequency vibration of the piezoelectric ceramic sheet 1 and the heat conduction ability to the anti-corrosion component 2b, thereby reducing the atomization effect of the atomizer.

[0060] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Nebulizer, characterized in that It includes a piezoelectric ceramic sheet and a corrosion-resistant component, wherein the corrosion-resistant component is provided with a receiving cavity, and the first end of the corrosion-resistant component along the height direction has an opening communicating with the receiving cavity; Along the height direction, one end of the piezoelectric ceramic sheet extends into the opening and is located within the receiving cavity, forming a colloidal space between it and the inner top wall of the receiving cavity; an overflow channel is provided between the circumferential outer wall of the piezoelectric ceramic sheet and the circumferential inner wall of the receiving cavity, and the overflow channel is connected to the opening and the colloidal space respectively; the colloidal space is filled with colloidal material, and the piezoelectric ceramic sheet is bonded and fixed to the anti-corrosion component by the colloidal material.

2. The atomizer of claim 1, wherein, Along the height direction, the thickness of the colloidal space is 10 μm to 500 μm.

3. The atomizer according to claim 1, characterized in that, The overflow channel is formed between the outer circumferential wall of the piezoelectric ceramic sheet and the inner wall of the receiving cavity, and the distance between the outer circumferential wall of the piezoelectric ceramic sheet and the inner wall of the receiving cavity is 0.1 mm to 0.5 mm.

4. The atomizer according to claim 1, characterized in that, Along the height direction, the other end of the piezoelectric ceramic sheet is coplanar with the first end.

5. The atomizer according to any one of claims 1 to 4, characterized in that, The corrosion-resistant component is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet.

6. An atomizer, characterized in that, It includes a piezoelectric ceramic sheet and a corrosion-resistant component, wherein the corrosion-resistant component is provided with a receiving cavity, and the first end of the corrosion-resistant component along the height direction has an opening communicating with the receiving cavity; Along the height direction, one end of the piezoelectric ceramic sheet covers the opening; the receiving cavity is filled with colloid, and the piezoelectric ceramic sheet is bonded and fixed to the anti-corrosion component by the colloid.

7. The atomizer according to claim 6, characterized in that, The first end has an overflow channel that communicates with the receiving cavity and the outside of the receiving cavity respectively.

8. The atomizer according to claim 7, characterized in that, The first end is provided with a plurality of overflow channels spaced apart along the circumference of the receiving cavity.

9. The atomizer according to claim 7, characterized in that, The overflow channel extends through the outer circumferential side of the corrosion-resistant component at one end away from the receiving cavity, forming an overflow outlet.

10. The atomizer according to claim 6, characterized in that, The vertical distance between one end of the piezoelectric ceramic sheet and the inner top wall of the receiving cavity is 10μm to 500μm.

11. The atomizer according to any one of claims 6 to 10, characterized in that, The corrosion-resistant component is a quartz glass sheet, a microcrystalline glass sheet, or a borosilicate glass sheet.

12. A gas-fired water heater, characterized in that, The atomizer includes any one of claims 1 to 11.

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