Detachable water tank structure and household appliance

Abstract

The detachable water tank structure comprises a water storage container, a water outlet is formed in the bottom of the water storage container, and a water outlet valve is arranged on the water outlet; the water drainage device is provided with a water drainage cavity, a water inlet of the water drainage cavity is connected with the bottom of the water storage container in a matched mode, and a non-contact liquid level sensor electrically connected with the control unit is arranged on the outer wall of the water drainage device; a protruding piece is arranged in the lower water cavity, a flow channel is formed between the protruding piece and the inner wall of the lower water cavity, and the protruding piece abuts against the water outlet valve in a matched mode, so that the water outlet valve opens the water outlet, and water in the water storage container flows into the water pump from the lower water cavity through the flow channel. The utility model further discloses a household appliance comprising the detachable water tank structure. The non-contact liquid level sensor is arranged on the outer wall of the water drainage device below the water storage container, whether water shortage exists in the water storage container or not is detected, water is prevented from remaining in the water storage container, detection is more accurate, meanwhile, the water quality cannot be affected, the structure is simple, and the service life of the non-contact liquid level sensor can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a detachable water tank structure and a household appliance. Background Art

[0002] In daily life, we often use some household appliances with detachable water tank structures, such as electric irons, hanging irons, coffee machines, and beverage machines. Taking electric irons as an example, they generally include a main body, in which a water tank, a water pump, and a steam generator are installed, and the three are interconnected through water pipes in turn. When using an electric iron, in order to timely understand the amount of water in the water tank and prevent dry burning or dry pumping of the water pump, it is necessary to install a mechanical buoy device or a contact detection device such as a water level detector in the water tank to intelligently determine whether there is water in the water tank. However, due to the limitations of the installation position of the detection device, there is often a problem that the water tank is empty but there is still water remaining in the water tank, resulting in inaccurate water level detection, and the use of contact detection will have an adverse effect on the service life of the detection device and the water quality.

[0003] The detachable water tank structure and household appliance provided by the utility model are intended to solve at least one of the above technical problems. Utility Model Content

[0004] In view of the above analysis, the detachable water tank structure and household appliance proposed in the present invention are used to solve the deficiencies of the prior art.

[0005] The utility model is mainly realized through the following technical solutions:

[0006] The detachable water tank structure provided by the utility model comprises:

[0007] A water storage container, the bottom of which is provided with a water outlet, and the water outlet is provided with a water outlet valve;

[0008] A water discharge device is provided at the bottom of the water storage container and is provided with a water discharge cavity, the water discharge cavity has a water inlet and a water discharge port, the water inlet is matched and connected with the bottom of the water storage container and corresponds to the position of the water discharge port, the water discharge port is communicated with a water pump, and a non-contact liquid level sensor electrically connected to a control unit is provided on an outer wall of the water discharge device;

[0009] A protrusion is provided in the lower water cavity, and a flow channel is provided between the protrusion and the inner wall of the lower water cavity. The protrusion cooperates with the water outlet valve to abut against the water outlet valve, so that the water outlet valve opens the water outlet, so that the water in the water storage container flows into the water pump from the lower water cavity through the flow channel.

[0010] Furthermore, an annular groove is provided on the inner wall of the lower water cavity, a plate-shaped body is provided on the annular groove, a protrusion is provided on the upper surface of the plate-shaped body, and a plurality of filtering holes distributed around the outer side of the protrusion are provided on the plate-shaped body to form the flow channel;

[0011] Alternatively, an annular groove is provided on the inner wall of the lower water cavity, a protrusion is provided on the inner bottom surface of the lower water cavity, a plate-like body is provided on the annular groove and clamped on the protrusion, and a plurality of filtering holes distributed around the outer side of the protrusion are provided on the plate-like body to form the flow channel.

[0012] Furthermore, a first convex ring is provided at the bottom of the water storage container to cooperate with the bottom surface of the water storage container to form a receiving groove, the water outlet is located in the receiving groove, and a first sealing structure is provided between the water inlet of the lower water cavity and the first convex ring.

[0013] Furthermore, a first side wall abutting against the first sealing structure is provided on the outer edge of the upper surface of the plate-like body.

[0014] Furthermore, the annular groove is arranged in the middle part of the lower water cavity, the plate-like body divides the lower water cavity into an upper space and a lower space, a water inlet is arranged at the top of the upper space, and a water outlet is arranged at the bottom of the lower space, and the non-contact liquid level sensor is located on the outer wall of the upper space and below the water outlet.

[0015] Furthermore, the non-contact liquid level sensor is a capacitive sensor.

[0016] Furthermore, a backing plate is detachably provided on the outer wall of the water discharge device, and the non-contact liquid level sensor is clamped between the backing plate and the outer wall of the water discharge device.

[0017] Furthermore, the water outlet valve includes a valve body and an elastic member, the bottom of the valve body is convexly provided with a support portion movably arranged in a first convex ring, the top of the valve body is penetrated on the water outlet and is provided with a second sealing structure movably sealed with the water outlet, the valve body is sleeved with an elastic member arranged between the support portion and the bottom of the accommodating groove, a water passage is provided between the outer wall of the support portion and the inner wall of the first convex ring, or a water passage is provided between the support portion and the outer wall of the valve body.

[0018] Furthermore, a household appliance comprises a main body and the detachable water tank structure, wherein the water storage container can be detachably assembled on the main body.

[0019] Furthermore, the main body includes a bottom shell and a top shell, the water discharge device is installed between the bottom shell and the bottom surface of the top shell, the top shell is provided with a recessed portion, the bottom surface of the recessed portion is provided with a through hole corresponding to the water outlet, the water storage container is movably fitted on the recessed portion, and the bottom of the water storage container is passed through the through hole.

[0020] Compared with the prior art, the detachable water tank structure and household appliance provided by the technical solution of the utility model have the following beneficial effects:

[0021] 1. By arranging a non-contact liquid level sensor on the outer wall of the water discharge device under the water storage container, it is possible to detect whether there is a lack of water in the water storage container, thereby avoiding residual water in the water storage container, making the detection more accurate and not affecting the water quality. Compared with traditional contact liquid level sensors such as reed switches, float boxes, magnet combinations and flow meters, the non-contact liquid level sensor has a simple structure, low cost and can increase the service life of the non-contact liquid level sensor.

[0022] 2. Use a non-flexible drainage device with an upper and lower drop to replace the flexible water pipe, and set the non-contact liquid level sensor on the upper outer wall of the drainage device. Because the drainage device has a certain hardness, it can avoid the situation where there is water in the upper part of the water pipe and no water in the lower part, which is similar to the situation caused by the bending of the water pipe, thus causing the water level detection to fail. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a detachable water tank structure provided by an embodiment of the utility model;

[0025] Figure 2 It is a top view of the detachable water tank structure provided by the embodiment of the utility model;

[0026] Figure 3 yes Figure 2 AA section view;

[0027] Figure 4 yes Figure 1 Schematic diagram of the decomposition of

[0028] Figure 5 It is a structural schematic diagram of an electric iron provided by an embodiment of the utility model;

[0029] Figure 6 yes Figure 5 sectional view of .

[0030] The reference numerals are as follows:

[0031] 1. Water storage container, 1a. Water outlet, 11. Bottom plate, 111. First convex ring, 112. Raised portion, 12. Upper shell, 2. Water outlet valve, 21. Valve body, 21a. Water passage, 211. Support portion, 22. Elastic member, 23. Second sealing structure, 3. Water discharge device, 3a. Water discharge cavity, 3b. Water inlet, 3c. Water discharge port, 31. Ring groove, 32. Step surface, 33. First convex edge, 34. Water discharge joint, 35. Raised ridge, 4. Non-contact liquid level sensor Sensor, 51, plate-shaped body, 51a, flow channel, 511, first side wall, 512, notch, 513, strip-shaped recess, 52, protrusion, 6, first sealing structure, 7, pad, 71, second convex edge, 8, body, 81, bottom shell, 82, top shell, 82a, accommodating cavity, 821, recessed portion, 821a, through hole, 822, second side wall, 823, pit, 9, sealing cover, 10, water pump, 13, handle, 14, sewer pipe, 20, control unit. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selections and substitutions made by those skilled in the art under the guidance of the present invention shall be deemed to be within the scope of protection claimed by the present invention.

[0033] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] like Figure 1-4 As shown, the utility model provides a detachable water tank structure, including: a water storage container 1, a water outlet 1a is provided at the bottom of the water storage container, a water outlet valve 2 is provided on the water outlet 1a, a first convex ring 111 is provided at the bottom of the water storage container 1 to cooperate with the bottom surface of the water storage container 1 to form a receiving groove, and the water outlet 1a is located in the receiving groove.

[0036] In this embodiment, a water inlet is provided at the top of the water storage container 1, and a sealing cover 9 is detachably provided on the water inlet for convenient water replenishment. A raised portion 112 is provided at the bottom of the water storage container 1, and a handle 13 is hinged at the top of the water storage container 1. The water storage container 1 includes a bottom plate 11 and an upper shell 12 connected to each other, and the water outlet valve 2 is installed on the bottom plate 11. The split structure of the water storage container 1 facilitates the installation of the water outlet valve 2.

[0037] The water discharge device 3 is arranged at the bottom of the water storage container 1 and is provided with a water discharge chamber 3a. The water discharge chamber 3a has a water inlet 3b and a water discharge port 3c. A first sealing structure 6 is provided between the water inlet 3b of the water discharge chamber 3a and the first convex ring 111. The first sealing structure 6 is a sealing ring. The water inlet 3b is matched and connected with the bottom of the water storage container 1 and corresponds to the position of the water outlet 1a. The water discharge port 3c is connected with the water pump 10. A non-contact liquid level sensor 4 electrically connected with the control unit 20 is provided on the outer wall of the water discharge device 3. Among them, a water discharge joint 34 connected with the water discharge chamber 3a is provided on the water discharge device 3. The water discharge joint 34 is connected with the water pump 10 through the water discharge pipe 14.

[0038] A protrusion 52 is provided in the lower water chamber 3a, and a flow channel 51a is provided between the protrusion 52 and the inner wall of the lower water chamber 3a. The protrusion 52 cooperates with the water outlet valve 2 to abut against the water outlet valve 2, so that the water outlet valve 2 opens the water outlet 1a, and the water in the water storage container 1 flows from the lower water chamber 3a through the flow channel 51a into the water pump 10. Among them, the water inlet 3b is located at the top of the lower water chamber 3a, and the lower water outlet 3c is located at one side of the bottom of the lower water chamber 3a.

[0039] The water outlet valve 2 includes a valve body 21 and an elastic member 22. The bottom of the valve body 21 is convexly provided with a support portion 211 movably provided in the first convex ring 111. The top of the valve body 21 is penetrated on the water outlet 1a and provided with a second sealing structure 23 movably sealed with the water outlet 1a. The valve body 21 is sleeved with an elastic member 22 provided between the support portion 211 and the bottom of the accommodating groove. A water passage 21a is provided between the support portion 211 and the outer wall of the valve body 21. In another embodiment, a water passage is provided between the outer wall of the support portion 211 and the inner wall of the first convex ring 111.

[0040] In this embodiment, the elastic member 22 is a spring, and the second sealing structure 23 is a sealing ring, and is placed in the water storage container 1. The support portion 211 is annular, and the bottom and middle cross-sections of the valve body 21 are cross-shaped to form a water passage 21a between the inner side wall of the support portion 211, and the cross-section of the protrusion 52 is cross-shaped to form four ribs in its circumferential direction, and the ribs correspond to the positions of the water passage 21a.

[0041] An annular groove 31 is provided on the inner wall of the lower water cavity 3a, and a plate-like body 51 is provided on the annular groove 31. A protrusion 52 is provided on the upper surface of the plate-like body 51. A plurality of filter holes distributed around the outer side of the protrusion 52 are provided on the plate-like body 51 to form the flow channel 51a for filtering impurities in the water. A first side wall 511 is provided on the outer edge of the upper surface of the plate-like body 51 to abut against the first sealing structure 6, and the filter hole is located between the first side wall 511 and the protrusion 52. By setting the first side wall 511 to abut against the first sealing structure 6, it is prevented that when the water storage container 1 is placed and the protrusion 52 presses against the bottom of the valve body 21 of the water outlet valve 2, the plate-like body 51 is skewed, which affects the water outlet effect. Among them, the protrusion 52 is provided in the middle of the plate-like body 51. And the protrusion 52 and the plate-like body 51 are integrally formed, which is convenient for disassembly and assembly in the lower water device 3, and can ensure the structural strength at the same time.

[0042] In another embodiment, an annular groove 31 is provided on the inner wall of the water chamber 3a, a protrusion 52 is provided on the inner bottom surface of the water chamber 3a, and the protrusion 52 is integrally formed with the water discharge device 3. A plate-shaped body 51 is provided on the annular groove 31 and is clamped on the protrusion 52. The plate-shaped body 51 is provided with a plurality of filtering holes distributed around the outer side of the protrusion 52 to form the flow channel 51a. The middle part of the plate-shaped body 51 is sleeved on the protrusion 52.

[0043] In this embodiment, the annular groove 31 is arranged in the middle of the lower water chamber 3a, and the plate-shaped main body 51 divides the lower water chamber 3a into an upper space and a lower space. A water inlet 3b is arranged at the top of the upper space, and a water outlet 3c is arranged at the bottom of the lower space. The non-contact liquid level sensor 4 is located on the outer wall of the upper space and below the water outlet 1a. The non-contact liquid level sensor 4 is a capacitive sensor.

[0044] Since the capacitive sensor is arranged on the upper outer wall of the water discharge device 3, when the water level in the water discharge chamber 3a drops to the set value, that is, there is always a small amount of water in the lower space, the capacitive sensor cannot sense the water, and the control unit 20 controls the water pump 10 to stop working according to the sensing signal to avoid dry pumping of the water pump 10 connected to the lower space.

[0045] Furthermore, a notch 512 corresponding to the position of the non-contact liquid level sensor 4 is provided on the first side wall 511. When water passes through the side wall of the water discharge device 3, it is possible to avoid the water in the water discharge chamber 3a being too far from the non-contact liquid level sensor 4 and being unable to sense the water depth signal in the water discharge device 3, and the wall thickness of the water discharge chamber 3a corresponding to the capacitive sensor is 0.7-3mm.

[0046] In this embodiment, the first side wall 511 cooperates with the inner wall of the lower water chamber 3a for concave-convex positioning. Specifically, a convex ridge 35 is vertically provided in the lower water chamber 3a, and a strip-shaped recess 513 cooperating with the convex ridge 35 is provided on the outer wall of the first side wall 511, which is convenient for positioning the first side wall 511, so that the position of the notch 512 and the non-contact liquid level sensor 4 is always consistent, thereby preventing it from moving in the lower water chamber 3a.

[0047] A pad 7 is detachably provided on the outer wall of the water discharge device 3, and the non-contact liquid level sensor 4 is clamped between the pad 7 and the outer wall of the water discharge device 3, so as to facilitate the positioning of the non-contact liquid level sensor 4 and prevent it from moving and affecting the detection result. In this embodiment, there is a gap between the inner wall of one end of the pad 7 and the outer wall of the water discharge device 3, so that the wire of the capacitive sensor is led out and electrically connected to the control unit 20.

[0048] The pad 7 is clamped on the water discharge device 3, and a step surface 32 corresponding to the annular groove 31 is provided in the middle of the outer wall of the water discharge device 3. A first convex edge 33 is provided in the transverse direction of the outer wall of the water discharge device 3, and vertical baffles are provided at both ends to limit the end walls of the pad 7. A second convex edge 71 is provided at the inner edge of the bottom of the pad 7, and the top of the pad 7 abuts against the first convex edge 33, and the second convex edge 71 abuts against the step surface 32.

[0049] like Figure 5-6 As shown, the utility model also provides an electric iron, comprising a body 8 and the above-mentioned detachable water tank structure, and the water storage container 1 can be detachably assembled on the body 8. It is also suitable for some household appliances with detachable water tank structures such as hanging irons, coffee machines, and beverage machines.

[0050] The body 8 includes a detachably connected bottom shell 81 and a top shell 82, the water discharge device 3 is installed between the bottom shell 81 and the bottom surface of the top shell 82, the water pump 10 is installed on the bottom shell 81, a recessed portion 821 is provided on the top shell 82, a through hole 821a corresponding to the water outlet 1a is provided on the bottom surface of the recessed portion 821, the water storage container 1 is movably matched with the recessed portion 821, the first convex ring 111 at the bottom of the water storage container 1 is penetrated on the through hole 821a and partially placed in the water discharge cavity 3a. A receiving cavity 82a with a bottom opening is provided on the top shell 82, and the bottom shell 81 is matched and placed in the receiving cavity 82a.

[0051] The first sealing structure 6 is clamped between the top shell 82 and the water discharge device 3. The bottom of the top shell 82 is provided with a second side wall 822 and a second convex ring located inside the second side wall 822. The outer edge of the first sealing structure 6 is provided with a first groove matched with the second convex ring, and the bottom of the first sealing structure 6 abuts against the first convex edge 33 on the upper outer wall of the water discharge device 3. The recessed portion 821 is open on one side and the top, and a pit 823 matched with the convex portion 112 is provided on the bottom surface of the recessed portion 821.

[0052] The pad 7 is clamped between the bottom shell 81, the top shell 82 and the outer wall of the water discharge device 3. The pad 7 is a silicone pad to avoid hard contact with the capacitive sensor. The outer wall of the pad 7 abuts against the second side wall 822, and the bottom of the second convex edge 71 abuts against the protrusion on the bottom shell 81.

[0053] When the water storage container 1 is not placed on the top shell 82 of the main body 8, the valve body 21 moves downward under the action of the spring and blocks the water outlet 1a through the sealing ring.

[0054] When the first convex ring 111 of the water storage container 1 is placed on the water discharge device 3 on the top shell 82, the protrusion 52 on the plate-shaped main body 51 pushes the valve body 21 upward, and the water in the water storage container 1 flows into the water discharge chamber 3a from the gap between the water outlet 1a and the sealing ring and the water passage, so that it is filled with water. Since the capacitive sensor is arranged on the upper outer surface of the water discharge device 3, the sensing signal is transmitted to the control unit 20, and the control unit 20 controls the water pump 10 to turn on for pumping water. When the water in the water storage container 1 is used up and the water level in the water discharge chamber 3a drops to the set value, the capacitive sensor cannot sense the water, and the control unit 20 controls the water pump 10 to turn off and stop pumping water according to the sensing signal.

[0055] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A detachable water tank structure, characterized in that: include: A water storage container (1) is provided with a water outlet (1a) at the bottom thereof, and a water outlet valve (2) is provided on the water outlet (1a); A water discharge device (3) is arranged at the bottom of the water storage container (1) and is provided with a water discharge chamber (3a), the water discharge chamber (3a) having a water inlet (3b) and a water discharge port (3c), the water inlet (3b) being matched and connected to the bottom of the water storage container (1) and corresponding to the position of the water discharge port (1a), the water discharge port (3c) being connected to a water pump (10), and a non-contact liquid level sensor (4) electrically connected to a control unit (20) being provided on an outer wall of the water discharge device (3); A protrusion (52) is provided in the lower water chamber (3a), and a flow channel (51a) is provided between the protrusion (52) and the inner wall of the lower water chamber (3a). The protrusion (52) cooperates with and abuts against the water outlet valve (2), so that the water outlet valve (2) opens the water outlet (1a), allowing water in the water storage container (1) to flow from the lower water chamber (3a) into the water pump (10) through the flow channel (51a).

2. The detachable water tank structure according to claim 1, characterized in that: An annular groove (31) is provided on the inner wall of the lower water cavity (3a), a plate-shaped body (51) is provided on the annular groove (31), a protrusion (52) is provided on the upper surface of the plate-shaped body (51), and a plurality of filtering holes distributed around the outer side of the protrusion (52) are provided on the plate-shaped body (51) to form the flow channel (51a); Alternatively, an annular groove (31) is provided on the inner wall of the lower water cavity (3a), a protrusion (52) is provided on the inner bottom surface of the lower water cavity (3a), a plate-shaped body (51) is provided on the annular groove (31) and is clamped on the protrusion (52), and a plurality of filtering holes are provided on the plate-shaped body (51) and are distributed around the outer side of the protrusion (52) to form the flow channel (51a).

3. The detachable water tank structure according to claim 2, characterized in that: The bottom of the water storage container (1) is provided with a first convex ring (111) to cooperate with the bottom surface of the water storage container (1) to form a receiving groove, the water outlet (1a) is located in the receiving groove, and a first sealing structure (6) is provided between the water inlet (3b) of the lower water chamber (3a) and the first convex ring (111).

4. The detachable water tank structure according to claim 3, characterized in that: A first side wall (511) abutting against the first sealing structure (6) is provided on the outer edge of the upper surface of the plate-shaped main body (51).

5. The detachable water tank structure according to claim 2, characterized in that: The annular groove (31) is arranged in the middle of the lower water chamber (3a); the plate-shaped body (51) divides the lower water chamber (3a) into an upper space and a lower space; a water inlet (3b) is arranged at the top of the upper space; a water outlet (3c) is arranged at the bottom of the lower space; and the non-contact liquid level sensor (4) is located on the outer wall of the upper space and below the water outlet (1a).

6. The detachable water tank structure according to any one of claims 1 to 5, characterized in that: The non-contact liquid level sensor (4) is a capacitive sensor.

7. The detachable water tank structure according to claim 6, characterized in that: A backing plate (7) is detachably provided on the outer wall of the water discharge device (3), and the non-contact liquid level sensor (4) is clamped between the backing plate (7) and the outer wall of the water discharge device (3).

8. The detachable water tank structure according to claim 3 or 4, characterized in that: The water outlet valve (2) comprises a valve body (21) and an elastic member (22); a support portion (211) movably arranged in a first convex ring (111) is convexly arranged at the bottom of the valve body (21); a top of the valve body (21) is penetrated on the water outlet (1a) and a second sealing structure (23) movably sealed with the water outlet (1a) is arranged on the valve body (21); an elastic member (22) is sleeved on the valve body (21) and arranged between the support portion (211) and the bottom of the accommodating groove; a water passage is arranged between the outer wall of the support portion (211) and the inner wall of the first convex ring (111); or a water passage (21a) is arranged between the support portion (211) and the outer wall of the valve body (21).

9. A household appliance, characterized in that: It comprises a main body (8) and a detachable water tank structure as claimed in any one of claims 1 to 8, wherein the water storage container (1) is detachably mounted on the main body (8).

10. The household appliance according to claim 9, characterized in that: The body (8) comprises a bottom shell (81) and a top shell (82); the water discharge device (3) is installed between the bottom shell (81) and the bottom surface of the top shell (82); a recessed portion (821) is provided on the top shell (82); a through hole (821a) corresponding to the water outlet (1a) is provided on the bottom surface of the recessed portion (821); the water storage container (1) is movably fitted on the recessed portion (821); and the bottom of the water storage container (1) is penetrated through the through hole (821a).

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