Air energy water heater liner structure

Abstract

The utility model discloses a kind of air energy water heater inner bag structure, it includes stainless steel inner bag body, stainless steel inner bag body includes top end cover, cylinder and bottom end cover, the outside of bottom end cover and top end cover is fixedly connected with cylinder through reinforcing ring, reinforcing ring is detachably connected with bottom end cover by fastening bolt, the inboard of top end cover and bottom end cover is fixedly connected with locating block, the slot of locating block is connected with filter cartridge, the inside rotation of filter cartridge is connected with receiving tray, the lower surface of receiving tray is fixedly connected with soft hair brush strip, the bottom of soft hair brush strip is fixedly connected with two symmetrical distribution's scraper. Through the above structure, the stability of inner bag structure is strengthened, and it is convenient to disassemble and maintain, and by receiving tray drive soft hair brush strip to clean filter cartridge inside, impurity accumulation can also be prevented, and the combination of two different taper guide seats of inclination and magnesium rod outside porous protective sleeve can prevent water flow impact, and improve guide effect.

Description

Technical Field

[0001] This utility model relates to the field of air source water heater technology, and in particular to an air source water heater inner tank structure. Background Technology

[0002] During the long-term use of air source heat pump water heaters, the inner tank, as the core water storage component, has always been a key issue that needs to be optimized in the industry regarding its structural stability, ease of maintenance, and internal water quality assurance. Currently, most mainstream air source heat pump water heater inner tanks on the market adopt an integrated welded structure. Although this structure has a certain structural strength during the initial installation stage, with the increase of usage time, the inner tank is prone to problems such as weld cracking and local deformation due to long-term water pressure impact and stress changes caused by alternating hot and cold temperatures. This seriously affects the overall stability of the inner tank, not only shortening the service life of the water heater but also potentially causing safety hazards such as water leakage.

[0003] Meanwhile, traditional inner tanks have significant shortcomings in terms of maintenance. Because the inner tank is mostly fixedly connected to external pipes and heating components, when a fault occurs inside the inner tank and needs to be repaired or internal components need to be replaced, staff often need to disassemble the water heater extensively. This not only involves complex procedures and consumes a lot of time and manpower, but also greatly reduces maintenance efficiency and causes many inconveniences for users.

[0004] In addition, the accumulation of impurities inside the inner tank has long been a problem for users and industry professionals. During the operation of the water heater, impurities such as mud, sand, and rust in the water can easily enter the inner tank with the water flow. If not cleaned in time, these impurities will gradually accumulate at the bottom of the tank, pipe interfaces, and the surface of the heating element. Utility Model Content

[0005] The purpose of this utility model is to provide an inner tank structure for an air source water heater to solve the problems mentioned in the background art.

[0006] This utility model also provides an air source water heater inner tank structure as described above, comprising: a stainless steel inner tank body, the stainless steel inner tank body including a top cover, a cylinder body, and a bottom cover, the outer sides of the bottom cover and the top cover being fixedly connected to the cylinder body by reinforcing rings, the reinforcing rings being detachably connected to the bottom cover by fastening bolts, the outer side of the cylinder body being provided with a water inlet pipe and a water outlet pipe, the inner wall of the bottom cover being provided with two conical guide seats with different inclinations, a magnesium rod being fixedly connected to the center of the conical guide seats, and the outer side of the magnesium rod... A perforated protective sleeve is provided, and a sewage discharge component is installed inside the stainless steel inner liner. A heat exchange coil is installed inside the stainless steel inner liner, with both the inlet and outlet ends of the heat exchange coil penetrating the stainless steel inner liner and extending to the outside. Positioning blocks are fixedly connected to the inner sides of the top and bottom covers. A filter cartridge is engaged with the slot of the positioning block. A receiving plate is rotatably connected inside the filter cartridge. A soft brush strip is fixedly connected to the lower surface of the receiving plate, and two symmetrically distributed scrapers are fixedly connected to the bottom of the soft brush strip.

[0007] According to the present invention, the inner tank structure of an air source water heater includes a silicone sealing ring in the inner groove of the reinforcing ring, and the connection between the bottom cover, the cylinder body and the top cover is tightly connected to the silicone sealing ring.

[0008] According to the air source water heater inner tank structure described in this utility model, the ends of the top cover and the bottom cover are both threadedly connected to the cylinder body, and the ends of the top cover and the bottom cover are both annular grooves.

[0009] According to the present invention, the inner tank structure of an air source water heater includes a drain pipe, and a drain valve is provided at the connection between the drain pipe and the bottom cover.

[0010] According to the present invention, the inner tank structure of an air source water heater has a magnesium rod with a thicker bottom and a thinner top, the magnesium rod is located directly above the drain pipe, and the slope of the upper section of the conical guide seat is greater than the slope of the lower section of the conical guide seat.

[0011] According to the present invention, the inner tank structure of an air source water heater has a porous protective sleeve with a cylindrical hollow structure, and the porous protective sleeve is made of a modified EPDM rubber material with elasticity.

[0012] According to the present invention, an air source water heater inner tank structure includes a rotating block fixedly connected to the outside of the receiving plate, and the outside of the rotating block is provided with anti-slip stripes.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the top cover, cylinder and bottom cover of the stainless steel inner liner are fixedly connected by a reinforcing ring, and the reinforcing ring and the bottom cover are detachably connected by fastening bolts, which not only enhances the stability of the inner liner structure, but also facilitates disassembly and maintenance, reduces the difficulty and cost of maintenance, and improves the maintainability of the product; the two sections of tapered guide seats with different inclinations on the inner wall of the bottom cover can guide the water flow to flow more evenly in the liner, reducing the wear and tear of the inner liner caused by local water flow impact;

[0014] The filter cartridge, with its top and bottom caps engaged by positioning blocks, provides initial filtration of the water entering the inner tank, intercepting impurities and effectively reducing scale formation and impurity accumulation. This ensures long-term clean water quality and lowers the risk of equipment malfunctions due to water quality issues. Soft brushes and scrapers clean the filter cartridge, preventing filter screen blockage, improving drainage efficiency, reducing impurity buildup inside the tank, and extending its lifespan. Simultaneously, the porous protective sleeve surrounding the magnesium rod ensures its proper function as a sacrificial anode, preventing corrosion of the inner tank wall, and also prevents residue from the consumed magnesium rod from directly mixing into the water. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a complete structural diagram of the inner tank structure of the air source water heater of this utility model;

[0017] Figure 2 This is a side view of the inner tank structure of the air source water heater of this utility model;

[0018] Figure 3 This is a cross-sectional view of the inner tank structure of the air source water heater of this utility model;

[0019] Figure 4 This is a structural diagram of the cleaning mechanism of the inner tank structure of the air source water heater of this utility model;

[0020] Figure 5 The inner tank structure of the air source heat pump water heater of this utility model Figure 3 Partial structural diagram at point A in the middle.

[0021] Legend:

[0022] 1. Stainless steel inner tank body; 2. Top cover; 3. Cylinder body; 4. Bottom cover; 5. Reinforcing ring; 6. Conical guide seat; 7. Magnesium rod; 8. Perforated protective sleeve; 9. Sewage discharge assembly; 10. Heat exchange coil; 11. Positioning block; 12. Filter cartridge; 13. Receiving plate; 14. Soft brush strip; 15. Silicone sealing ring; 16. Fastening bolt; 17. Sewage discharge pipe; 18. Sewage discharge valve; 19. Scraper; 20. Rotating block; 21. Water inlet pipe; 22. Drain pipe. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] Example 1

[0026] like Figure 1-5 As shown, this utility model provides an air source water heater inner tank structure, which includes: a stainless steel inner tank body, the stainless steel inner tank body including a top cover, a cylinder body and a bottom cover, the bottom cover and the top cover are both fixedly connected to the cylinder body by reinforcing rings, the reinforcing rings are detachably connected to the bottom cover by fastening bolts, the cylinder body is provided with an inlet pipe and a drain pipe, the inner wall of the bottom cover is provided with two conical guide seats with different inclinations, a magnesium rod is fixedly connected to the center of the conical guide seats, the magnesium rod is provided with a porous protective sleeve, the stainless steel inner tank body is provided with a sewage discharge component; the stainless steel inner tank body is provided with a heat exchange coil, the inlet end and outlet end of the heat exchange coil both penetrate the stainless steel inner tank body and extend to the outside, the inner sides of the top cover and the bottom cover are both fixedly connected with positioning blocks, the slots of the positioning blocks are engaged with filter cartridges, the filter cartridges are provided with... A receiving plate is rotatably connected, and a soft brush strip is fixedly connected to the lower surface of the receiving plate. Two symmetrically distributed scrapers are fixedly connected to the bottom of the soft brush strip. A silicone sealing ring is provided in the inner groove of the reinforcing ring. The connection between the bottom end cover, the cylinder, and the top end cover is tightly connected to the silicone sealing ring. The ends of the top end cover and the bottom end cover are threaded to the cylinder, and the ends of the top end cover and the bottom end cover are both annular grooves. The sewage discharge assembly includes a sewage discharge pipe, and a sewage discharge valve is provided at the connection between the sewage discharge pipe and the bottom end cover. The magnesium rod has a two-section structure with a thicker bottom and a thinner top. The magnesium rod is located directly above the sewage discharge pipe, and the slope of the upper section of the conical guide seat is greater than the slope of the lower section of the conical guide seat. The porous protective sleeve has a cylindrical hollow structure and is made of modified EPDM rubber material with high temperature resistance and corrosion resistance. A rotating block is fixedly connected to the outside of the receiving plate, and the outside of the rotating block is provided with anti-slip stripes.

[0027] In this embodiment, the top cover, cylinder, and bottom cover of the stainless steel inner tank are first securely connected with reinforcing rings and fastening bolts to prevent water leakage during operation. Then, the filter cartridge and positioning block are engaged in place, ensuring that the soft brush strips and scrapers are not deformed and do not touch the heat exchange coil. The multi-hole protective sleeve is then fully installed and fitted with the magnesium rod. After installation, water is injected into the stainless steel inner tank, and the drain valve is closed. Water is injected into the interior of the stainless steel inner tank through the water inlet pipe. The segmented conical guide seat inside the bottom cover guides the water flow to be evenly distributed during injection and is protected by the multi-hole protective sleeve to prevent impurities from directly impacting the magnesium rod. The filter cartridge can initially filter impurities in the incoming water, protecting the heat exchange coil and preventing large particles from having an excessive impact on the heat exchange coil. When it is necessary to clean the inside of the filter cartridge, the receiving plate is rotated so that the soft brush strips clean along the inner wall of the filter cartridge to prevent the filter cartridge from becoming clogged.

[0028] Example 2

[0029] like Figure 1-5 The diagram shows the inner tank structure of an air source heat pump water heater, which includes: a stainless steel inner tank body, comprising a top cover, a cylinder, and a bottom cover. The bottom cover and the top cover are both fixedly connected to the cylinder by reinforcing rings. The connection method is based on the original threaded connection and the fixing with reinforcing rings, and the sealing structure is further optimized. Two parallel silicone sealing rings are added to the inner groove of the reinforcing rings. The edges of the annular grooves of the bottom cover, the cylinder, and the top cover are all provided with rounded corner transitions. After assembly, the connection and the silicone sealing rings form a double compression seal, which can prevent the internal liquid of the stainless steel inner tank body from leaking. In addition, the port of the water inlet pipe passes through the interior of the stainless steel inner tank body and extends into the interior of the filter cartridge, while the port of the drain pipe is located between the stainless steel inner tank body and the filter cartridge for drainage.

[0030] The drain pipe in the drain assembly adopts a double-layer composite pipe structure. The inner layer is made of stainless steel, and the outer layer is wrapped with a modified EPDM rubber insulation layer to prevent condensation in the pipe during draining. The drain valve is an electromagnetic three-way valve, whose control end is connected to the main control unit of the water heater via a wire. A pressure sensor and a turbidity sensor are embedded in the inner wall of the bottom cover. When the pressure difference at the bottom of the inner tank exceeds the specified limit, the main control unit automatically opens the drain valve to release pressure and drain the water. At the same time, the inner wall of the bottom cover is provided with two sections of conical flow guide seats with different inclinations. The lower section of the conical flow guide seat has a spiral flow guide groove added to its surface, forming a flow guide channel with the steep slope structure of the upper section, allowing scale and impurities to flow quickly into the drain pipe along the spiral trajectory.

[0031] The magnesium rod has a two-stage stepped structure, with the bottom diameter larger than the top diameter. In addition, the outer wall of the magnesium rod is coated with a nano-ceramic coating, which slows down the corrosion rate and prevents magnesium slag from scattering. The strong adhesion between the nano-ceramic coating and the magnesium rod substrate can tightly wrap the corrosion layer on the surface of the magnesium rod, preventing corrosion products from detaching from the substrate due to the loose structure. The moderate toughness of the coating can adapt to the volume changes of the magnesium rod during the corrosion process and will not crack due to expansion. If the coating cracks, the corrosion products will fall off from the crack to form slag, while the tough coating can maintain its integrity and continue to bind the corrosion products.

[0032] Example 3

[0033] like Figure 1-5 The diagram illustrates the inner tank structure of an air source heat pump water heater, comprising: positioning blocks fixedly connected to the inner sides of both the top and bottom covers; a filter cartridge engaged with the slots of the positioning blocks; a receiving plate rotatably connected inside the filter cartridge; a soft brush strip fixedly connected to the lower surface of the receiving plate; and two symmetrically distributed scrapers fixedly connected to the bottom of the soft brush strip. An annular groove is provided on the inner side of the positioning blocks. During filter cartridge installation, the positioning blocks in the top and bottom covers engage and fix the two ends of the filter cartridge. When cleaning the internal filter screen is required, the receiving plate can be rotated along the inner wall of the filter cartridge by rotating the blocks, thereby allowing the soft brush strip to clean the mesh of the filter cartridge.

[0034] The top and bottom of the filter cartridge feature corresponding annular protrusions that align with the annular grooves of the positioning block, allowing for quick disassembly. The filter cartridge employs a double-layer nested structure with inner and outer layers of mesh. The inner mesh is coarse, while the outer mesh is fine, enabling the filtration of impurities of varying particle sizes. Axial reinforcing ribs are incorporated into the sidewalls of the filter cartridge, enhancing structural strength and creating a spiral flow channel that allows water to spiral upwards along the inner wall of the cartridge, extending the filtration path.

[0035] A soft brush strip is fixedly connected to the lower surface of the receiving tray, with rounded edges. This effectively reduces excessive wear on the brush strip edges when water flows into the filter cartridge. The brush strip employs a double-layered bristle structure for cleaning the inner and outer mesh layers of the filter cartridge. Additionally, a spring is installed inside the brush strip, adjusting the contact pressure with the inner wall of the filter cartridge to ensure effective cleaning while preventing excessive wear.

[0036] The scraper has micro-protrusions at the bottom to enhance its ability to remove stubborn scale from the inner wall of the bottom cover. There are two scrapers symmetrically distributed on both sides, and the scrapers have a certain angle to fit against the inner wall of the bottom cover, so that the scale can be discharged through the through hole at the bottom of the conical guide seat into the drain pipe.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," 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 limitations, 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 said element.

[0038] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A structure for the inner tank of an air source heat pump water heater, characterized in that, include: The stainless steel inner liner body includes a top cover, a cylindrical body, and a bottom cover. The bottom cover and the top cover are both fixedly connected to the cylindrical body by reinforcing rings. The reinforcing rings are detachably connected to the bottom cover by fastening bolts. The cylindrical body is provided with an inlet pipe and a drain pipe. The inner wall of the bottom cover is provided with two conical guide seats with different inclinations. A magnesium rod is fixedly connected to the center of the conical guide seats. The magnesium rod is provided with a porous protective sleeve. The stainless steel inner liner body is provided with a sewage discharge assembly inside. The stainless steel inner liner is equipped with a heat exchange coil. The inlet and outlet ends of the heat exchange coil both penetrate the stainless steel inner liner and extend to the outside. The inner sides of the top and bottom covers are fixedly connected to positioning blocks. The slots of the positioning blocks are engaged with filter cartridges. The filter cartridges are rotatably connected to a receiving plate. The lower surface of the receiving plate is fixedly connected to a soft brush strip. The bottom of the soft brush strip is fixedly connected to two symmetrically distributed scrapers.

2. The air source heat pump water heater inner tank structure according to claim 1, characterized in that, The inner groove of the reinforcing ring is provided with a silicone sealing ring, and the connection between the bottom end cap, the cylinder and the top end cap is tightly connected with the silicone sealing ring.

3. The structure of the inner tank of an air source water heater according to claim 1, characterized in that, The ends of the top and bottom caps are threaded to the cylinder body, and the ends of the top and bottom caps are annular grooves.

4. The structure of the inner tank of an air source water heater according to claim 1, characterized in that, The sewage discharge assembly includes a sewage discharge pipe, and a sewage discharge valve is provided at the connection between the sewage discharge pipe and the bottom cover.

5. The structure of the inner tank of an air source water heater according to claim 1, characterized in that, The magnesium rod has a two-section structure that is thicker at the bottom and thinner at the top. The magnesium rod is located directly above the sewage pipe. The slope of the upper section of the conical guide seat is greater than the slope of the lower section of the conical guide seat.

6. The inner tank structure of an air source water heater according to claim 1, characterized in that, The porous protective sleeve has a cylindrical hollow structure and is made of elastic modified EPDM rubber material.

7. The inner tank structure of an air source water heater according to claim 1, characterized in that, A rotating block is fixedly connected to the outside of the receiving plate, and the outside of the rotating block is provided with anti-slip stripes.

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