CN114631730A

CN114631730A - Water tank assembly of household appliance and household appliance

Info

Publication number: CN114631730A
Application number: CN202210275158.4A
Authority: CN
Inventors: 刘子厚; 付远华
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-06-17
Anticipated expiration: 2042-03-21
Also published as: CN114631730B

Abstract

The invention relates to a water tank component of a household appliance, which comprises a water tank seat extending forwards and backwards, and a water tank accommodated in the water tank seat, wherein the front end of the water tank seat is provided with an opening, the water tank component also comprises a water adding box with a water adding port, the volume of the water adding box is far smaller than that of the water tank, the depth of the water adding box is larger, the water outlet of the water adding box is communicated with the water injecting port of the water tank in a fluid manner, the water adding box is accommodated in the water tank seat in an initial state, and the water adding box moves out of the opening of the water tank seat in a water adding state. According to the invention, water is added into the water tank through the water adding box, the water tank does not need to be moved during water adding operation, the operation is convenient, the volume of the water adding box is far smaller than that of the water tank, the depth of the water adding box is larger, and the problem of overflow caused by movement of the water tank is effectively avoided. Because the water tank does not need to be moved during the water adding operation, the water outlet connecting structure of the water tank and the water tank seat keeps a stable installation state, thereby effectively avoiding the water leakage problem caused by the fact that the water tank is not inserted in place or the water tank and the water tank seat are repeatedly drawn and inserted and the like, and prolonging the service life of the water tank assembly.

Description

Water tank assembly of household appliance and household appliance

Technical Field

The invention relates to the field of household appliances, in particular to a water tank assembly of a household appliance and the household appliance.

Background

At present, the setting modes of water tanks of household appliances such as steam boxes or steam-baking integrated machines have two types: in the first mode, the water tank is arranged on the right side of the inner container, a pressing part for a user to hold is arranged on the water tank, and when water needs to be added to the water tank, the water tank is taken out and added with water by holding the pressing part, for example, an electric steam box disclosed in the Chinese utility model patent with the patent number ZL201721384366.9 (the publication number is CN 208625331U); the second mode, the water tank sets up in the top of inner bag, still is provided with the suppress mechanism that is used for releasing the water tank simultaneously, when needs add water operation to the water tank, releases the water tank forward through suppress mechanism and adds water, like the electric steamer water tank mounting structure that the chinese utility model patent of patent number is ZL201721059173.6 (the publication number is CN 208243387U).

Further, among the above-mentioned second mode, the water inlet that the water tank is used for the water injection is generally seted up at its top, can take place the condition that the water in the water tank spills over when the water tank is filled up water and is pushed like this, and the water that spills over is unrestrained, increases user's cleaning, influences user's use and experiences. The mode that has through setting up the rubber lid at the water inlet among the prior art avoids the water in the water tank to spill over through the water inlet, however when specifically adding water the operation, needs the user to open the rubber lid with the hand, troublesome poeration to the user can be stained with water on hand when the operation, also can influence user's use experience equally.

And furthermore, the water outlet of the water tank is connected with the water outlet joint of the water tank seat to realize water outlet of the water tank, and if the water tank is not placed in place, the water tank is accommodated to cause the water leakage problem in the process of taking and placing the water tank. In addition, the sealing ring at the water outlet joint of the water tank and the water tank seat is repeatedly inserted and pulled, so that the sealing ring is easily abraded to influence the service life of the sealing ring, and further the water tank component is subjected to water leakage.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a water tank assembly for a household electrical appliance, which can prevent water from overflowing during a water adding operation and is convenient to operate.

The second technical problem to be solved by the present invention is to provide a water tank assembly of a household appliance, which can prevent water leakage at a water outlet connection.

The third technical problem to be solved by the present invention is to provide a water tank assembly of a household appliance with a long service life.

A fourth technical problem to be solved by the present invention is to provide a water tank assembly of a household appliance, which can prevent the water level in the water tank from exceeding the highest water level.

A fifth technical problem to be solved by the present invention is to provide a household appliance having the above water tank assembly.

The technical scheme adopted by the invention for solving at least one technical problem is as follows: the utility model provides a domestic appliance's water tank subassembly, includes the water tank seat that extends around and the water tank of holding in this water tank seat, wherein, the front end of water tank seat has the opening, its characterized in that still includes the box of adding water that has the filler, the volume of this box of adding water is far less than the water tank and the degree of depth is great, the delivery port of this box of adding water is fluid communication with the filler of water tank to, under the initial condition, this box of adding water is held in above-mentioned water tank seat, and under the state of adding water, this box of adding water moves out the opening of water tank seat.

Further, the water adding box is arranged on the front side of the water tank and can move back and forth relative to the water tank. Thereby facilitating the water adding operation of the water tank assembly.

Furthermore, the upper part of the water filling box is opened to form the water outlet, the water outlet is arranged on the rear side wall of the water filling box, a water outlet pipe extending forwards and backwards is connected onto the water outlet, the water filling port is arranged on the front side wall of the water tank, a water filling sleeve extending forwards and backwards is connected onto the water filling port, and the water outlet pipe is inserted into the water filling sleeve and can move back and forth along the water filling sleeve. Through the insertion connection of the water outlet guide pipe and the water injection sleeve, on one hand, water in the water adding box can be smoothly injected into the water tank, and on the other hand, the water adding box can stably move back and forth.

Further, the water injection sleeve comprises a front sleeve connected to the front edge of the water injection port and a rear sleeve connected to the rear edge of the water injection port, the opening edge of the free end of the water outlet conduit extends outwards along the circumferential direction to form a limiting circumferential edge, and the limiting circumferential edge is abutted to the front and rear edges of the opening edge of the rear sleeve in the state that the water adding box moves out of the water tank seat. Therefore, the water adding box can be limited through the limiting peripheral edge, and the water adding box is prevented from dropping in a water adding and shifting-out state.

Further, still include the stop gear who is used for carrying on spacingly to the box that adds water under initial condition. Thereby enabling the water adding box to be stably connected with the water tank and avoiding the water adding box falling off from the water tank under the state of not adding water.

Further, the limiting mechanism comprises a limiting cylinder convexly arranged on the rear surface of the water adding box along the front-back direction and a limiting column convexly arranged on the front end surface of the water tank, the limiting column extends along the front-back direction and can be inserted into the limiting cylinder, a limiting boss is convexly arranged at the free end of the limiting column, a limiting hole is formed in the inner surface of the limiting cylinder, the hole edge of the limiting hole extends outwards along the radial direction to form a limiting hole channel, a limiting rod capable of moving back and forth along the limiting hole channel is embedded in the limiting hole channel, the limiting boss is positioned in the limiting cylinder in an initial state, and one end of the limiting rod extends into the limiting cylinder and abuts against the limiting boss front and back. The water adding box is prevented from falling from the water tank under the state of no water adding through the mutual limiting action of the limiting rod and the limiting lug boss.

Furthermore, the limiting column is respectively sleeved and connected with a limiting slide block and a first reset spring, wherein the first reset spring is clamped and arranged between the limiting slide block and the front end surface of the water tank, one end of the limiting rod is provided with a limiting block which can extend out of the limiting hole, the limiting rod is sleeved and connected with a second reset spring, the second reset spring is clamped and arranged between the limiting block and the corresponding inner end surface of the limiting hole channel,

under the initial condition, first reset spring and second reset spring all are in the unstressed state, and above-mentioned stopper is located between above-mentioned spacing boss and the spacing slider and offsets around with spacing boss, by preceding above-mentioned box that adds water to promoting after, the stopper moves into above-mentioned spacing pore and the spacing slider moves backward, and first reset spring and second reset spring all are compressed, the spacing boss roll-off is spacing section of thick bamboo, and the box that adds water moves forward under the effect of first reset spring's elastic force. On the one hand can realize fixing a position the firm of box that adds water under initial condition like this, on the other hand can realize adding the auto-eject of box, convenience of customers's operation of adding water through promoting to add the box.

Furthermore, the limiting blocks are respectively provided with a first limiting surface extending vertically and a second limiting surface extending obliquely front and back, the limiting slide block is provided with a third limiting surface extending obliquely front and back and matched with the second limiting surface, the limiting bosses are respectively provided with a fourth limiting surface extending vertically and a fifth limiting surface extending obliquely front and back and matched with the second limiting surface,

under the initial condition, the fifth spacing face of the spacing boss supports against the first spacing face of the spacing block from front to back, so that the water adding box is stably arranged at the front end of the water tank, the water adding box is pushed from front to back, the second spacing face of the spacing block supports against the third spacing face of the spacing slide block from front to back, the water adding box is pushed from front to back in the shifting-out state, the fourth spacing face of the spacing boss supports against the second spacing face of the spacing block from front to back, and the water adding box can be ejected out smoothly.

Further, the two limiting hole channels are oppositely arranged, the two limiting rods are also in one-to-one correspondence with the two limiting hole channels, the limiting boss is in a spherical segment shape, the rear surface of the limiting boss forms the fourth limiting surface, the outer side surface of the limiting boss forms the fifth limiting surface, the front end of the limiting slide block is in a circular truncated cone shape, and the outer side surface of the front end of the limiting slide block forms the third limiting surface.

Furthermore, the two water outlet guide pipes are symmetrically arranged on the left side and the right side of the limiting cylinder, and correspondingly, the two water injection ports of the water tank are in one-to-one correspondence with the water outlet guide pipes. On the one hand, the water adding box can move back and forth more stably, and on the other hand, the water adding box can be connected with the water tank more stably.

Furthermore, the front upper end of the water tank is sunken downwards to form a water adding step, the water adding box is arranged on the water adding step and can move back and forth along the horizontally extending top surface of the water adding step, and the water filling port is arranged on the rear side wall of the water adding step. Thereby enable the structure of water tank set spare compacter for add water box and water tank can be held in the water tank seat better, can reduce the water yield in the water box after adding water and accomplishing simultaneously, avoid removing the water box and the water box overflow problem that leads to of adding water better, this outer messenger adds water box back-and-forth movement steadily.

Furthermore, the top wall of the water tank is provided with a vent hole, and the water tank is internally provided with a buoyancy sealing element which can float up and down along with the change of the water level in the water tank. When the water level in the water tank reaches the highest water level, the air vent is sealed by the buoyancy sealing piece, so that a sealed cavity structure is formed inside the water tank, the internal pressure of the water tank is greater than the atmospheric pressure, the pressure difference between the water filling port of the water tank and the water outlet of the water adding box and the inner cavity of the water tank form a sealed cavity structure, water cannot be continuously added into the water tank at the moment, and the water level in the water tank is effectively prevented from exceeding the highest water level.

Furthermore, the shape of the water adding box is square, the length of the water adding box in the front-back direction is far smaller than the width of the water adding box in the left-right direction, the length of the water adding box is smaller than the height of the water adding box, and the maximum moving distance of the water adding box is equal to the length of the water adding box. Even if the water adding box is in a water state through the design, the water adding box can not be moved to cause the problem of water overflow.

The technical solution adopted to further solve the fifth technical problem is as follows: a household appliance is characterized by having the water tank assembly of the household appliance.

Further, the household appliance is one of a steam box, a steam oven, a microwave oven, a disinfection cabinet and a cleaning machine or an integrated combination device of at least two of the steam box, the steam oven, the microwave oven, the disinfection cabinet and the cleaning machine.

Furthermore, the water adding box also comprises a control panel which is vertically arranged at the front side of the water tank component, and one end of the control panel is provided with a water adding window for the water adding box to move out, so that the water adding operation of the water tank component is facilitated.

Furthermore, a watering panel is arranged on the front end face of the watering box, and in an initial state, the watering panel is embedded in the watering window, and the front surface of the watering panel is flush with the front surface of the control panel. On one hand, the appearance of the household appliance is attractive, and on the other hand, the automatic ejection of the water adding box is realized by pressing the water adding panel by a user.

Compared with the prior art, the invention has the advantages that: the water adding box is arranged in the water tank, water is added into the water tank through the water adding box, the water tank does not need to be moved during water adding operation, the water adding box only needs to be moved, the water adding operation is convenient, the volume of the water adding box is far smaller than that of the water tank, the depth of the water adding box is large, and the problem of water overflow caused by movement of the water tank is effectively solved. In addition, because the water tank does not need to be moved during the water adding operation, the water outlet connecting structure of the water tank and the water tank seat keeps a stable installation state, thereby effectively avoiding the water leakage problem caused by the fact that the water tank is not inserted in place or the water tank and the water tank seat are repeatedly drawn and inserted and the like, and prolonging the service life of the water tank assembly.

Drawings

Fig. 1 is a schematic structural diagram (in an initial state) of a household appliance in an embodiment of the present invention;

fig. 2 is a sectional view (in an initial state) of the home appliance in the embodiment of the present invention;

fig. 3 is a sectional view (in an initial state) of the electric home appliance in another direction according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of a water tank assembly according to an embodiment of the present invention (in an initial state);

FIG. 5 is a schematic view of a partial structure of a water tank assembly according to an embodiment of the present invention (in an initial state);

FIG. 6 is a schematic structural diagram of a water adding box according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of the household appliance in another state (in a water adding state) according to the embodiment of the present invention;

FIG. 8 is a schematic view of a water tank assembly in another state (in a water filling state) according to an embodiment of the present invention;

FIG. 9 is a partial schematic view of a water tank assembly in another state (water-filling state) according to an embodiment of the present invention;

FIG. 10 is another partial schematic view of the water tank assembly in another state (water-filling state) according to the embodiment of the present invention;

FIG. 11 is an enlarged view of portion A of FIG. 2;

fig. 12 is an enlarged view of a portion B in fig. 3 (the stopper rod on the other side is not shown).

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

As shown in fig. 1 to 12, a household appliance is one of a steam box, a steaming oven, a microwave oven, a disinfection cabinet and a cleaning machine, or an integrated combination of at least two of them, and in this embodiment, is specifically a steam box. The household appliance comprises an inner container 1 and an upper mounting plate 2 horizontally arranged above the inner container 1, wherein a water tank assembly 4 is arranged on the upper surface of the upper mounting plate 2, and a control panel 3 is vertically arranged on the front side of the upper mounting plate 2.

Further, the above-described water tank assembly 4 includes a water tank seat 42 extending forward and rearward, and a water tank 41 accommodated in the water tank seat 42, wherein a front end of the water tank seat 42 has an opening. In this embodiment, the water tank seat 42 and the water tank 41 are both rectangular parallelepiped structures extending forward and backward, and the lengths of the water tank seat 42 and the water tank 41 are both much greater than the widths thereof. Still further, a water adding box 43 having a water adding port 431 is further included, the water adding box 43 has a volume much smaller than that of the water tank 41 and a depth much larger than that of the water tank 41, a water outlet 432 of the water adding box 43 is in fluid communication with the water adding port 411 of the water tank 41, and in an initial state, the water adding box 43 is accommodated in the water tank seat 42, and in a water adding state, the water adding box 43 is moved out of the opening of the water tank seat 42.

Therefore, the water adding box 43 is arranged in the water tank 41, water is added into the water tank 41 through the water adding box 43, the water tank 41 does not need to be moved during water adding operation, only the water adding box 43 needs to be moved, the volume of the water adding box 43 is far smaller than that of the water tank 41, the depth of the water adding box 43 is large, and the problem of overflow caused by movement of the water tank 41 is effectively solved. In addition, because the water tank 41 does not need to be moved during the water adding operation, the water outlet connection structure of the water tank 41 and the water tank seat 42 keeps a stable installation state, thereby effectively avoiding the water leakage problem caused by the fact that the water tank 41 cannot be inserted into the water tank or the water tank 41 and the water tank seat 42 are repeatedly inserted and pulled, and prolonging the service life of the water tank assembly 4. Although there is a possibility that water remains in the water adding box 43 after the water tank 41 is filled with water, since the volume and depth of the water adding box 43 are small and the moving distance of the water adding box 43 is short, the problem of water overflowing of the water adding box 43 can be effectively reduced. Of course, in order to avoid the problem of the water filling box 43 overflowing, in the present embodiment, the shape of the water filling box 43 is square, the length of the water filling box 43 in the front-back direction is much smaller than the width in the left-right direction, the length of the water filling box 43 is smaller than the height, and the maximum moving distance of the water filling box 43 is equal to the length. By the above design, even if the water adding box 43 has water, the water adding box 43 is moved without causing water overflow.

Preferably, in the present embodiment, the above-mentioned watering case 43 is provided at the front side of the water tank 41 and can move back and forth with respect to the water tank 41, thereby facilitating the watering operation of the water tank assembly 4. Furthermore, one end of the control panel 3 is provided with a watering window 31 for the watering box 43 to move out, the front end surface of the watering box 43 is provided with a watering panel 430, and in an initial state, the watering panel 430 is embedded in the watering window 31, and the front surface of the watering panel 430 is flush with the front surface of the control panel 3, so that the appearance of the household appliance is beautiful.

In this embodiment, the upper portion of the water feeding box 43 is opened to form the water outlet 432, the water outlet 432 is opened on the rear side wall of the water feeding box 43, the water outlet 432 is connected with a water outlet conduit 433 extending forward and backward, the water filling port 411 is opened on the front side wall of the water tank 41, the water filling port 411 is connected with a water filling sleeve 4111 extending forward and backward, and the water outlet conduit 433 is inserted into the water filling sleeve 4111 and can move back and forth along the water filling sleeve 4111. By inserting the water outlet pipe 433 into the water injection sleeve 4111, the water in the water feed box 43 can be smoothly injected into the water tank 41, and the water feed box 43 can be stably moved forward and backward. Preferably, the water filling sleeve 4111 includes a front sleeve 41111 connected to the front edge of the water filling port 411 and a rear sleeve 41112 connected to the rear edge of the water filling port 411, the opening edge of the free end of the water outlet conduit 433 extends radially outward along the circumferential direction to form a limiting circumferential edge 4331, and the limiting circumferential edge 4331 abuts against the opening edge of the rear sleeve 41112 in the front-rear direction when the water filling box 43 is moved out of the water tank seat 42. Therefore, the water adding box 43 can be limited through the limiting circumferential edge 4331, and the water adding box 43 is prevented from falling off in a water adding and shifting-out state. In this embodiment, the water outlet tube 433 and the water filling box 43 are an integral piece, and the water filling sleeve 4111 and the water tank 41 are an integral piece.

In addition, the water adding device further comprises a limiting mechanism used for limiting the water adding box 43 in the initial state, so that the water adding box 43 can be stably connected with the water tank 41, and the water adding box 43 is prevented from falling off the water tank 41 in the state of no water adding. Specifically, the limiting mechanism includes a limiting cylinder 5 protruding from the rear surface of the water feeding box 43 in the front-rear direction and a limiting post 7 protruding from the front end surface of the water tank 41, the limiting post 7 extends in the front-rear direction and can be inserted into the limiting cylinder 5, a limiting boss 71 protruding from the free end of the limiting post 7, a limiting hole 51 formed in the inner surface of the limiting cylinder 5, a hole edge of the limiting hole 51 extending radially outward to form a limiting hole passage 511, a limiting rod 6 capable of moving back and forth along the limiting hole 51 is embedded in the limiting hole passage 511, and in an initial state, the limiting boss 71 is located in the limiting cylinder 5, and one end of the limiting rod 6 extends into the limiting cylinder 5 and abuts against the limiting boss 71 in the front-rear direction. The water adding box 43 is prevented from falling off the water tank 41 in the state of no water adding through the mutual limiting action of the limiting rod 6 and the limiting lug boss 71.

Preferably, the limiting post 7 is respectively sleeved with a limiting slider 72 and a first return spring 73, wherein the first return spring 73 is clamped between the limiting slider 72 and the front end surface of the water tank 41, one end of the limiting rod 6 is provided with a limiting block 61 capable of extending out of the limiting hole 51, the limiting rod 6 is sleeved with a second return spring 62, and the second return spring 62 is clamped between the limiting block 61 and the corresponding inner end surface of the limiting hole 51. In an initial state, the first return spring 73 and the second return spring 62 are both in an unstressed state, the limiting block 61 is located between the limiting boss and the limiting slider 72 and is abutted against the limiting boss 71 from front to back, the water adding box 43 is pushed from front to back, the limiting block 61 moves into the limiting hole 51 and the limiting slider 72 moves backwards, the first return spring 73 and the second return spring 62 are both compressed, the limiting boss 71 slides out of the limiting barrel 5, and the water adding box 43 moves forwards under the action of elastic force of the first return spring 73. So on the one hand can realize adding water box 43's firm location under initial condition, on the other hand can realize adding water box 43's auto-eject through promoting to add water box 43, convenience of customers's operation of adding water. The water adding panel 430 arranged on the front end face of the water adding box 43 also facilitates the user to realize the automatic ejection of the water adding box 43 by pressing the water adding panel.

In this embodiment, an installation protrusion 50 is radially protruded from an outer surface of the rear end of the limiting cylinder 5, the limiting hole 511 is formed in the installation protrusion 50, a through hole is formed in an outer end of the installation protrusion 50 and the limiting hole 511, the other end of the limiting rod 6 is inserted into the through hole, and a stop block 63 is protruded from the end of the limiting rod 6.

Further preferably, the limiting block 61 has a first limiting surface 611 extending vertically and a second limiting surface 612 extending obliquely forward and backward, respectively, the limiting slider 72 has a third limiting surface 721 extending obliquely forward and backward and capable of cooperating with the second limiting surface 612, and the limiting boss 71 has a fourth limiting surface 711 extending vertically and a fifth limiting surface 712 extending obliquely forward and backward and capable of cooperating with the second limiting surface 612, respectively. In an initial state, the fifth limiting surface 712 of the limiting boss 71 is abutted against the first limiting surface 611 of the limiting block 61 in a forward and backward direction, so that the water adding box 43 is stably arranged at the front end of the water tank 41, the water adding box 43 is pushed from the front to the back, the second limiting surface 612 of the limiting block 61 is abutted against the third limiting surface 721 of the limiting slider 72 in a forward and backward direction, the water adding box 43 is pushed from the front to the back in a moving-out state of the water adding box 43, and the fourth limiting surface 711 of the limiting boss 71 is abutted against the second limiting surface 612 of the limiting block 61 in a forward and backward direction, so that the water adding box 43 can be ejected automatically and smoothly. In this embodiment, specifically, when the two stopper holes 51 are provided to face each other, the two stopper rods 6 are provided to correspond to the two stopper holes 51 one by one, the outer shape of the stopper boss 71 is in the form of a segment, the rear surface of the stopper boss 71 forms the fourth stopper surface 711, the outer side surface thereof forms the fifth stopper surface 712, the outer shape of the tip of the stopper slider 72 is in the form of a truncated cone, and the outer side surface of the tip of the stopper slider 72 forms the third stopper surface 721. Preferably, the two outlet conduits 433 are symmetrically disposed at the left and right sides of the limiting cylinder 5, and correspondingly, the two water inlets 411 of the water tank 41 are also in one-to-one correspondence with the outlet conduits 433. On the one hand, the watering box 43 can be more smoothly moved back and forth, and on the other hand, the watering box 43 can be more stably connected with the water tank 41. In this embodiment, specifically, the second limiting surface 612, the third limiting surface 721 and the fifth limiting surface 712 extend obliquely backward from inside to outside, wherein corresponding positions of the second limiting surface 612 and the third limiting surface 721 are parallel to each other, and meanwhile, the shape of the rear end of the limiting slider 72 is also truncated cone-shaped, and the outer side surface of the rear end is tilted forward from inside to outside, so as to avoid the problem that the water feeding box 43 cannot be smoothly moved out due to the locking of the limiting block 61 in the process of moving the water feeding box 43 outward.

In addition, in this embodiment, the upper front end of the water tank 41 is recessed downward to form a water filling step 412, the water filling box 43 is mounted on the water filling step 412 to be movable forward and backward along the horizontally extending top surface of the water filling step 412, and the water filling port 411 is opened in the rear side wall of the water filling step 412. Thereby enabling the structure of the water tank assembly 4 to be more compact, reducing the water quantity in the water adding box 43 after the water adding is finished, better avoiding the problem of water overflowing of the water adding box 43 caused by moving the water adding box 43, and further enabling the water adding box 43 to move back and forth more stably.

Further, a vent hole 43 is formed in a top wall of the water tank 41, and a buoyant seal 44 is provided in the water tank 41 to float up and down according to a change in water level in the water tank 41. Therefore, when the water level in the water tank 41 reaches the highest water level, the buoyancy sealing member 44 seals the vent hole 43, so that a sealed cavity structure is formed inside the water tank 41, the internal pressure of the water tank 41 is greater than the atmospheric pressure, the pressure difference between the water filling port 411 of the water tank 41 and the water outlet 432 of the water filling box 43 is reduced, and a sealed cavity structure is formed in the inner cavity of the water tank 41, so that water cannot be continuously filled into the water tank 41, and the water level in the water tank 41 is effectively prevented from exceeding the highest water level. Specifically, a vertically extending mounting box 45 is fixed to the bottom surface of the water tank 41, the top of the mounting box 45 is open, and the buoyancy seal 44 is a block and is accommodated in the mounting box 45. Further, guide protrusions 441 are horizontally protruded at both ends of the buoyant sealing member 44, respectively, and guide grooves 451 corresponding to the guide protrusions 441 one to one are formed on corresponding sidewalls of the mounting case 45, respectively, each of the guide grooves 451 extends vertically, and each of the guide protrusions 441 is fitted into the corresponding guide groove 451 and can move up and down along the guide groove 451, respectively, and when each of the guide protrusions 441 moves to the uppermost end of the corresponding guide groove 451, the buoyant sealing member 44 abuts against the inner bottom surface of the water tank 41, thereby enabling the buoyant sealing member 44 to move up and down smoothly, and enabling the buoyant sealing member 44 to seal the vent hole 43 more effectively. Specifically, the mounting box 45 includes a bent vertical wall 450, a lower end of the vertical wall 450 is fixed to a bottom surface of the water tank 41, two ends of the vertical wall 450 along a length direction are respectively fixed to an inner side surface of one side of the water tank 41, and the guide grooves 451 respectively penetrate through corresponding portions of the vertical wall 450 from top to bottom, so that the structure of the mounting box 45 can be formed well. Preferably, the top surface of the buoyant sealing member 44 is provided with a sealing boss 442 matching the size of the vent hole 43, and the sealing boss 442 is always opposite to the vent hole 43, so that the buoyant sealing member 44 can better seal the vent hole 43.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion, respectively), i.e., a fluid (gas, liquid or a mixture of both) can flow from the first portion along a flow path or/and be transported to the second portion, and may be a direct communication between the first portion and the second portion, or an indirect communication between the first portion and the second portion via at least one third element, such as a fluid channel, e.g., a pipe, a channel, a conduit, a flow guide, a hole, a groove, or a chamber that allows a fluid to flow through, or a combination thereof.

Claims

1. A water tank assembly of a household appliance, comprising a water tank base (42) extending back and forth and a water tank (41) accommodated in the water tank base (42), wherein the front end of the water tank base (42) has an opening, characterized by further comprising a water adding box (43) having a water adding port (431), the volume of the water adding box (43) is much smaller than that of the water tank (41) and the depth is large, a water outlet (432) of the water adding box (43) is in fluid communication with a water filling port (411) of the water tank (41), and, in an initial state, the water adding box (43) is accommodated in the water tank base (42), and, in a water adding state, the water adding box (43) is moved out of the opening of the water tank base (42).

2. The water tank assembly of a home appliance as claimed in claim 1, wherein the watering case (43) is provided at a front side of the water tank (41) and can move back and forth with respect to the water tank (41).

3. The water tank assembly of a home appliance according to claim 2, wherein the upper portion of the water feeding box (43) is opened to form the water outlet (432), the water outlet (432) is opened at a rear sidewall of the water feeding box (43), a water outlet pipe (433) extending forward and backward is connected to the water outlet (432), the water filling port (411) is opened at a front sidewall of the water tank (41), a water filling sleeve (4111) extending forward and backward is connected to the water filling port (411), and the water outlet pipe (433) is inserted into the water filling sleeve (4111) and can move back and forth along the water filling sleeve (4111).

4. A water tank assembly of a home appliance according to claim 3, wherein said water filling sleeve (4111) comprises a front sleeve (41111) connected to a front rim of said water filling port (411) and a rear sleeve (41112) connected to a rear rim of said water filling port (411), and a port rim of a free end of said water outlet conduit (433) extends radially outward in a circumferential direction to form a limiting rim (4331), and said limiting rim (4331) abuts against a port rim of said rear sleeve (41112) in a forward and backward direction in a state that said water filling box (43) is moved out of said water tank seat (42).

5. A water tank assembly for household appliances according to claim 3 or 4, characterized by further comprising a limiting mechanism for limiting the watering box (43) in an initial state.

6. The water tank assembly of a home appliance according to claim 5, wherein said limit mechanism comprises a limit cylinder (5) protruded on a rear surface of said watering case (43) in a front-rear direction and a limit post (7) protruded on a front surface of said water tank (41), the limiting column (7) extends along the front-back direction and can be inserted into the limiting cylinder (5), a limit boss (71) is convexly arranged at the free end of the limit column (7), a limit hole (51) is arranged on the inner surface of the limit cylinder (5), the edge of the limiting hole (51) extends along the radial direction to form a limiting pore passage (511), the limiting pore canal (511) is embedded with a limiting rod (6) which can move back and forth along the limiting pore canal (51), under the initial state, the limit boss (71) is positioned in the limit cylinder (5), one end of the limiting rod (6) extends into the limiting cylinder (5) and is pressed against the limiting lug boss (71) front and back.

7. The water tank assembly of the household appliance as claimed in claim 6, wherein the limiting post (7) is respectively sleeved with a limiting slider (72) and a first return spring (73), wherein the first return spring (73) is clamped between the limiting slider (72) and the front end surface of the water tank (41), one end of the limiting rod (6) is provided with a limiting block (61) which can extend out of the limiting hole (51), the limiting rod (6) is sleeved with a second return spring (62), the second return spring (62) is clamped between the limiting block (61) and the corresponding inner end surface of the limiting hole (511),

in an initial state, the first reset spring (73) and the second reset spring (62) are not stressed, the limiting block (61) is located between the limiting boss (71) and the limiting slide block (72) and is abutted to the limiting boss (71) in a front-back mode, the water adding box (43) is pushed from front to back, the limiting block (61) moves into the limiting hole (511) and the limiting slide block (72) moves towards the back, the first reset spring (73) and the second reset spring (62) are both compressed, the limiting boss (71) slides out of the limiting barrel (5), and the water adding box (43) moves forwards under the action of elastic force of the first reset spring (73).

8. A water tank assembly for a domestic appliance as claimed in claim 7, wherein said stoppers (61) each have a first stopper surface (611) extending vertically and a second stopper surface (612) extending obliquely forward and backward, and said stopper slider (72) has a third stopper surface (721) extending obliquely forward and backward and adapted to cooperate with said second stopper surface (612), and said stopper bosses (71) each have a fourth stopper surface (711) extending vertically and a fifth stopper surface (712) extending obliquely forward and backward and adapted to cooperate with said second stopper surface (612),

in an initial state, the fifth limiting surface (712) of the limiting boss (71) is in front-back contact with the first limiting surface (611) of the limiting block (61), the water adding box (43) is pushed from front to back, the second limiting surface (612) of the limiting block (61) is in front-back contact with the third limiting surface (721) of the limiting slide block (72), the water adding box (43) is pushed from front to back in a moving-out state of the water adding box (43), and the fourth limiting surface (711) of the limiting boss (71) is in front-back contact with the second limiting surface (612) of the limiting block (61).

9. The water tank assembly of electric home appliances as claimed in claim 8, wherein the two restricting hole passages (511) are oppositely disposed, the two restricting rods (6) are also provided and correspond to the restricting hole passages (511) one by one, the restricting boss (71) has a segment-like shape, the rear surface of the restricting boss (71) constitutes the fourth restricting surface (711), the outer side surface constitutes the fifth restricting surface (712), the front end of the restricting slider (72) has a truncated cone-like shape, and the outer side surface of the front end of the restricting slider (72) constitutes the third restricting surface (721).

10. The water tank assembly of electric home appliances as claimed in any one of claims 6 to 9, wherein the water outlet pipes (433) are two and symmetrically disposed at the left and right sides of the limiting cylinder (5), and accordingly, the water filling ports (411) of the water tank (41) are also two and correspond to the water outlet pipes (433) one by one.

11. A water tank assembly for a domestic appliance according to any one of claims 1 to 4 wherein said water tank (41) is recessed downwardly at its upper front end to form a watering stage (412), said watering cartridge (43) is mounted on said watering stage (412) so as to be movable back and forth along a horizontally extending top surface of said watering stage (412), and said water filling opening (411) is provided in a rear side wall of said watering stage (412).

12. A water tank assembly for a domestic appliance as claimed in any one of claims 1 to 4, wherein said water tank (41) has a vent (46) formed in a top wall thereof, and a buoyant sealing member (44) is disposed in said water tank (41) and is capable of floating up and down in response to a change in water level in said water tank (41), said buoyant sealing member (44) sealing said vent (46) when the water level in said water tank (41) reaches a maximum level.

13. The water tank assembly of a home appliance according to any one of claims 1 to 4, wherein the watering box (43) has a square shape, and the length of the watering box (43) in the front-rear direction is much smaller than the width in the left-right direction, and the length of the watering box (43) is smaller than the height, and the maximum moving distance of the watering box (43) is equal to the length thereof.

14. A domestic appliance having a water tank assembly as claimed in any one of claims 1 to 13.

15. The household appliance according to claim 14, wherein the household appliance is one of a steam box, a steam oven, a microwave oven, a disinfection cabinet, a cleaning machine or an integral combination of at least two of them.

16. The household appliance according to claim 15, further comprising a control panel (3) vertically disposed at a front side of the water tank assembly (4), one end of the control panel (3) having a watering window (31) for the watering box (43) to be removed.

17. The household appliance according to claim 16, wherein the watering box (43) has a watering panel (430) on a front face thereof, and in an initial state, the watering panel (430) is fitted in the watering window (31) and a front surface of the watering panel (430) is flush with a front surface of the control panel (3).