Material injection device for electric water heater

Abstract

The invention belongs to the technical field of electric water heaters, and discloses a material injection device for an electric water heater. The material injection device for the electric water heater is used for injecting foaming materials into an interlayer between a shell and an inner container and comprises a mounting frame. A plurality of material injection pipes are arranged on the mounting frame, outlets of the material injection pipes are distributed in the circumferential direction of the interlayer, the distance between the outlets of the material injection pipes and the center of the inner container is adjustable, and the material injection pipes can inject foaming materials into the interlayer at the same time. The material injection device for the electric water heater can guarantee uniform distribution of foaming materials in the material injection process, and is wide in application range.

Description

Technical Field

[0001] The invention relates to the technical field of electric water heaters, in particular to a material injection device for electric water heaters. Background Art

[0002] The electric water heater comprises an outer shell and an inner tank. In order to increase the heat preservation performance of the electric water heater, a foam material is usually injected between the outer shell and the inner tank.

[0003] The thickness of the water heater interlayer is usually between 15 and 40 mm, and the foam itself has fluidity. The prior art usually adopts a single-point injection method, that is, injecting material into the interlayer through a discharge port, and using the fluidity of the foam to fill the entire interlayer with foam. However, in this way, it is easy to have more foam material near the injection point, the foam density is high, and the position away from the discharge port is less foam material or a cavity is generated. Furthermore, if the foam material is filled unevenly, it is easy to cause uneven force on the inner tank during the foaming process, and the position of the inner tank in the outer shell is easy to deflect, which seriously affects the assembly of subsequent parts; in addition, the uneven filling of the foam material causes the overall center of gravity of the water heater to shift, and it is unstable during transportation, which is easy to damage the outer shell; furthermore, the uneven distribution of the foam material or the local cavity leads to poor thermal insulation performance during the use of the water heater, low energy efficiency, energy waste, and affect the user experience. In the prior art, the position of the discharge port of the injection device with multiple discharge ports cannot be adjusted, so it can only be applied to a specific model of water heater, and the scope of application is small.

[0004] Therefore, it is urgent to propose a material injection device for electric water heaters that has uniform material injection and a wide range of applications to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a material injection device for an electric water heater, which can ensure that the foaming material is evenly distributed during the material injection process and has a wide range of applications.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The injection device for an electric water heater is used to inject a foaming material into the interlayer between the outer shell and the inner tank, comprising:

[0008] A mounting frame is provided with a plurality of injection tubes, the outlets of the plurality of injection tubes are distributed along the circumference of the interlayer, the distance from the outlets of the injection tubes to the center of the inner liner is adjustable, and the plurality of injection tubes can inject foaming material into the interlayer at the same time.

[0009] Optionally, the mounting frame includes a plurality of support members, and the plurality of support members extend radially about the center of the inner tank. Each of the support members is provided with at least one injection pipe, and the outlet end of the injection pipe is connected to the support member through a connecting member, and the connecting member can move back and forth along the extension direction of the support member.

[0010] Optionally, a radial adjustment component is provided on the support member, the connecting member is connected to the radial adjustment component, and the radial adjustment component can drive the connecting member to move back and forth along the extension direction of the support member.

[0011] Optionally, the radial adjustment assembly includes a driving pulley and a driven pulley arranged in pairs on the support member, the driving pulley and the driven pulley are connected by a transmission belt, the connecting member is fixedly connected to the transmission belt, and the transmission belt can drive the connecting member to reciprocate along the extension direction of the support member.

[0012] Optionally, the radial adjustment assembly further includes a first driving member, a fixed end of the first driving member is fixedly connected to the supporting member, an output end of the first driving member is connected to the driving pulley, and the first driving member is used to drive the driving pulley to rotate.

[0013] Optionally, a guide rail is provided on the support member, and the guide rail is provided along the extension direction of the support member. The connecting member is connected to the guide rail and can reciprocate along the guide rail.

[0014] Optionally, a circumferential adjustment component is provided on the support member, the support member is connected to the circumferential adjustment component, and the circumferential adjustment component is used to adjust the angle between adjacent support members.

[0015] Optionally, the circumferential adjustment assembly includes a connecting shaft, and the middle parts of the plurality of support members are all sleeved on the connecting shaft. The support members include at least one first support member fixedly connected to the connecting shaft and at least one second support member rotatably connected to the connecting shaft. When the connecting shaft rotates, the first support member and the second support member can rotate relative to each other.

[0016] Optionally, a second driving member is provided on the mounting frame, a fixed end of the second driving member is connected to the mounting frame, an output end of the second driving member is connected to a driving gear, one end of the connecting shaft is connected to a driven gear, the second driving member can drive the driving gear to rotate, the driving gear and the driven gear are meshed for transmission, and the driven gear is used to drive the connecting shaft to rotate.

[0017] Optionally, an operating armrest is provided on the support member fixedly connected to the connecting shaft.

[0018] Optionally, a limiting hole is provided on the operating armrest, the limiting hole is located above the supporting member, and the plurality of injection tubes pass through the limiting hole.

[0019] Optionally, a valve is provided on the injection pipe, and the valve is used to control the flow of the foaming material.

[0020] Beneficial effects:

[0021] The injection device for electric water heater provided by the present invention changes the traditional single-point injection method into multi-point injection by arranging multiple injection pipes on the mounting frame. The outlets of the injection pipes are distributed along the circumference of the interlayer. When injecting, multiple injection pipes inject into the interlayer at the same time, ensuring the uniformity of injection, preventing the inner tank from shifting due to uneven injection, and thus preventing the center of gravity of the water heater from shifting, causing the outer shell to be easily damaged during transportation, or poor thermal insulation performance during use, large energy loss, etc. Because the interlayer is arranged around the center of the inner tank, by adjusting the distance from the outlet of the injection pipe to the center of the inner tank, the injection device can be applied to water heaters of different sizes, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of a material injection device for a water heater provided by the present invention;

[0024] Figure 2 is a structural schematic diagram of a first support member provided by the present invention;

[0025] Figure 3 is a schematic structural diagram of a second support member provided by the present invention;

[0026] Figure 4 yes Figure 1 A partial enlarged view of point A in the middle.

[0027] In the figure:

[0028] 100, mounting frame; 110, support member; 111, first support member; 112, second support member; 120, guide rail; 130, connecting member; 140, operating armrest; 141, limiting hole;

[0029] 200, injection pipe; 201, hose; 202, hard pipe; 210, valve;

[0030] 300, radial adjustment assembly; 310, driving pulley; 320, driven pulley; 330, transmission belt; 340, first driving member;

[0031] 400, circumferential adjustment assembly; 410, connecting shaft; 420, second driving member; 430, driving gear; 440, driven gear. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] See also Figure 1 The present embodiment provides an injection device for an electric water heater, which is used to inject foaming material into the interlayer between the outer shell and the inner tank. The injection device for the electric water heater includes a mounting frame 100. The mounting frame 100 is provided with a plurality of injection pipes 200, the outlets of the plurality of injection pipes 200 are distributed along the circumference of the interlayer, the distance between the outlet of the injection pipe 200 and the center of the inner tank is adjustable, and the plurality of injection pipes 200 can simultaneously inject foaming material into the interlayer.

[0037] The above-mentioned injection device for electric water heaters changes the traditional single-point injection method into multi-point injection by arranging multiple injection pipes 200 on the mounting frame 100. The outlets of the injection pipes 200 are distributed along the circumference of the interlayer. When injecting, multiple injection pipes 200 inject into the interlayer at the same time, ensuring the uniformity of injection and preventing the inner tank from shifting due to uneven injection, thereby preventing the outer shell from being easily damaged during transportation or poor insulation performance during use, large energy loss, etc. due to the displacement of the center of gravity of the water heater. Since the interlayer is arranged around the center of the inner tank, by adjusting the distance from the outlet of the injection pipe 200 to the center of the inner tank, the injection device can be applied to water heaters of different diameters, and has a wide range of applications.

[0038] See also Figure 1 The mounting frame 100 includes a plurality of support members 110, which extend radially about the center of the inner tank. Each support member 110 is provided with at least one injection pipe 200, and the outlet end of the injection pipe 200 is connected to the support member 110 through a connecting member 130, and the connecting member 130 can reciprocate along the extension direction of the support member 110.

[0039] It can be understood that the support 110 can provide an installation position for the injection tube 200 and guide the injection tube 200. Since the interlayer is annular, the support 110 is arranged radially, and when the injection tube 200 moves along the support 110, the position of the injection tube 200 outlet to the center of the inner liner can be adjusted, so that the injection tube 200 outlet faces the interlayer.

[0040] Continue to see Figure 1 The connecting member 130 includes a horizontal portion and a vertical portion that are vertically connected, wherein a positioning hole is provided on the horizontal portion, the outlet end of the injection pipe 200 is passed through the positioning hole and fixedly connected to the connecting member 130, and the vertical portion and the support member 110 are movably connected.

[0041] In this embodiment, two support members 110 are provided, and the two support members 110 are cross-arranged, and the intersection is directly opposite to the center of the inner container. Two injection pipes 200 are connected to each support member 110, and the outlets of the two injection pipes 200 on the same support member 110 are respectively located at the two ends of the support member 110. Furthermore, the two support members 110 have the same length, and the distance from the outlet of the injection pipe 200 to the center of the inner container is the same, so as to ensure that the injection port outlet is symmetrically arranged and the uniformity of injection is ensured. In other embodiments, the number of support members 110 and injection pipes 200 is set according to the use requirements.

[0042] Furthermore, a radial adjustment assembly 300 is disposed on the support member 110 , and the connecting member 130 is connected to the radial adjustment assembly 300 . The radial adjustment assembly 300 can drive the connecting member 130 to reciprocate along the extension direction of the support member 110 .

[0043] The position of the connecting member 130 is adjusted by the radial adjustment assembly 300, so that the connecting member 130 drives the outlet end of the injection tube 200 to move. It can be understood that the position of the outlet of the injection tube 200 is determined according to the position of the interlayer.

[0044] Furthermore, the radial adjustment assembly 300 includes a driving pulley 310 and a driven pulley 320 arranged in pairs on the support member 110. The driving pulley 310 and the driven pulley 320 are connected by a transmission belt 330. The connecting member 130 is fixedly connected to the transmission belt 330. The transmission belt 330 can drive the connecting member 130 to move back and forth along the extension direction of the support member 110.

[0045] The driving pulley 310 can drive the transmission belt 330 to rotate. Since the connecting member 130 is fixedly connected to the transmission belt 330, when the transmission belt 330 rotates, the connecting member 130 can move, thereby adjusting the position of the outlet of the injection pipe 200.

[0046] Furthermore, the radial adjustment assembly 300 also includes a first driving member 340 , a fixed end of the first driving member 340 is fixedly connected to the support member 110 , an output end of the first driving member 340 is connected to the driving pulley 310 , and the first driving member 340 is used to drive the driving pulley 310 to rotate.

[0047] Optionally, the first driving member 340 may be a motor. In this embodiment, the fixed end of the first driving member 340 is located on the side of the support member 110 away from the transmission belt 330. The output end of the first driving member 340 passes through the support member 110 and is connected to the driving pulley 310. The first driving member 340 drives the driving pulley 310 to rotate, thereby rotating the transmission belt 330, and the connecting member 130 moves along the extension direction of the support member 110. Optionally, the vertical portion of the connecting member 130 is fixedly connected to the transmission belt 330.

[0048] Furthermore, a guide rail 120 is disposed on the support member 110 , and the guide rail 120 is disposed along the extension direction of the support member 110 . The connecting member 130 is connected to the guide rail 120 and can reciprocate along the guide rail 120 .

[0049] Optionally, the vertical portion of the connecting member 130 is sleeved on the guide rail 120, and the guide rail 120 guides the connecting member 130 to ensure smooth movement of the connecting member 130. Optionally, the guide rail 120 is located between the driving pulley 310 and the driven pulley 320.

[0050] Furthermore, a circumferential adjustment assembly 400 is provided on the support member 110 , the support member 110 is connected to the circumferential adjustment assembly 400 , and the circumferential adjustment assembly 400 is used to adjust the angle between adjacent support members 110 .

[0051] Further, see Figures 1 to 4 The circumferential adjustment assembly 400 includes a connecting shaft 410, and the middle parts of multiple support members 110 are all sleeved on the connecting shaft 410. The support members 110 include at least one first support member 111 fixedly connected to the connecting shaft 410 and at least one second support member 112 rotatably connected to the connecting shaft 410. When the connecting shaft 410 rotates, the first support member 111 and the second support member 112 can rotate relative to each other.

[0052] Optionally, sleeves are provided in the middle of the first support member 111 and the second support member 112, and the connecting shaft 410 is passed through the sleeves. By adjusting the angle between the first support member 111 and the second support member 112, the injection device can be applied to circular single-tank water heaters or elliptical double-tank water heaters of different diameters, thereby increasing the application range of the injection device.

[0053] Furthermore, a second driving member 420 is provided on the mounting frame 100, and a fixed end of the second driving member 420 is connected to the mounting frame 100, an output end of the second driving member 420 is connected to a driving gear 430, and one end of the connecting shaft 410 is connected to a driven gear 440. The second driving member 420 can drive the driving gear 430 to rotate, and the driving gear 430 and the driven gear 440 are engaged for transmission, and the driven gear 440 is used to drive the support member 110 fixedly connected to the connecting shaft 410 to rotate.

[0054] By adopting the gear meshing transmission, the structure is simple and the operation is stable, and the positions of the first support member 111 and the second support member 112 can be accurately controlled.

[0055] Furthermore, an operating armrest 140 is provided on the support member 110 fixedly connected to the connecting shaft 410 .

[0056] By controlling the operating armrest 140 , the position of the injection device can be manually moved, which is convenient for the user to operate.

[0057] Furthermore, a limiting hole 141 is provided on the operating armrest 140 . The limiting hole 141 is located above the supporting member 110 , and the plurality of injection tubes 200 all pass through the limiting hole 141 .

[0058] The limiting hole 141 is arranged at the intersection of the first support member 111 and the second support member 112. Optionally, the injection pipe 200 includes a hose 201 and a hard pipe 202, the hard pipe 202 is fixedly connected to the connector 130, and the hose 201 passes through the limiting hole 141 and is connected to the hard pipe 202. The hose 201 is convenient for storage, and the hard pipe 202 at the discharge end can facilitate the discharge port to be aligned with the interlayer.

[0059] Optionally, the operating armrest 140 includes a horizontal support and a vertical support, and the horizontal support and the vertical support are vertically connected. The horizontal support is used for handholding, and the limiting hole 141 is set on the vertical support.

[0060] Furthermore, a valve 210 is provided on the injection pipe 200, and the valve 210 is used to control the flow of the foaming material.

[0061] Optionally, the valve 210 is disposed on the hard tube 202. The valve 210 may be a solenoid valve.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A material injection device for an electric water heater, used to inject a foaming material into the interlayer between the outer shell and the inner tank, characterized in that: include: A mounting frame (100) is provided with a plurality of injection pipes (200), the outlets of the plurality of injection pipes (200) are distributed along the circumference of the interlayer, the distance between the outlets of the injection pipes (200) and the center of the inner liner is adjustable, and the plurality of injection pipes (200) can simultaneously inject foaming material into the interlayer.

2. The injection device for an electric water heater according to claim 1, characterized in that: The mounting frame (100) comprises a plurality of support members (110), wherein the plurality of support members (110) extend radially about the center of the inner liner, and each of the support members (110) is provided with at least one injection pipe (200), and the outlet end of the injection pipe (200) is connected to the support member (110) via a connecting member (130), and the connecting member (130) can reciprocate along the extension direction of the support member (110).

3. The injection device for an electric water heater according to claim 2, characterized in that: The support member (110) is provided with a radial adjustment component (300), the connecting member (130) is connected to the radial adjustment component (300), and the radial adjustment component (300) can drive the connecting member (130) to reciprocate along the extension direction of the support member (110).

4. The injection device for an electric water heater according to claim 3, characterized in that: The radial adjustment assembly (300) comprises a driving pulley (310) and a driven pulley (320) arranged in pair on the support member (110); the driving pulley (310) and the driven pulley (320) are connected in transmission via a transmission belt (330); the connecting member (130) is fixedly connected to the transmission belt (330); and the transmission belt (330) can drive the connecting member (130) to move back and forth along the extension direction of the support member (110).

5. The injection device for an electric water heater according to claim 4, characterized in that: The radial adjustment assembly (300) further comprises a first driving member (340), wherein a fixed end of the first driving member (340) is fixedly connected to the support member (110), an output end of the first driving member (340) is connected to the driving pulley (310), and the first driving member (340) is used to drive the driving pulley (310) to rotate.

6. The injection device for an electric water heater according to claim 2, characterized in that: The support member (110) is provided with a guide rail (120), the guide rail (120) is arranged along the extension direction of the support member (110), and the connecting member (130) is connected to the guide rail (120) and can reciprocate along the guide rail (120).

7. The injection device for an electric water heater according to claim 2, characterized in that: The support member (110) is provided with a circumferential adjustment component (400), the support member (110) is connected to the circumferential adjustment component (400), and the circumferential adjustment component (400) is used to adjust the angle between adjacent support members (110).

8. The injection device for an electric water heater according to claim 7, characterized in that: The circumferential adjustment assembly (400) comprises a connecting shaft (410), the middle parts of the plurality of support members (110) are sleeved on the connecting shaft (410), the support members (110) comprise at least one first support member (111) fixedly connected to the connecting shaft (410) and at least one second support member (112) rotatably connected to the connecting shaft (410), and when the connecting shaft (410) rotates, the first support member (111) and the second support member (112) are capable of rotating relative to each other.

9. The injection device for an electric water heater according to claim 8, characterized in that: The mounting frame (100) is provided with a second driving member (420), the fixed end of the second driving member (420) is connected to the mounting frame (100), the output end of the second driving member (420) is connected to a driving gear (430), one end of the connecting shaft (410) is connected to a driven gear (440), the second driving member (420) can drive the driving gear (430) to rotate, the driving gear (430) and the driven gear (440) are meshed for transmission, and the driven gear (440) is used to drive the connecting shaft (410) to rotate.

10. The injection device for an electric water heater according to claim 8, characterized in that: An operating armrest (140) is provided on the support member (110) fixedly connected to the connecting shaft (410).

11. The injection device for an electric water heater according to claim 10, characterized in that: A limiting hole (141) is provided on the operating armrest (140), the limiting hole (141) is located above the support member (110), and the plurality of injection tubes (200) all pass through the limiting hole (141).

12. The injection device for an electric water heater according to any one of claims 1 to 11, characterized in that: The injection pipe (200) is provided with a valve (210), and the valve (210) is used to control the flow of the foaming material.

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