Cooking device

Abstract

The cooking device comprises a steam generator, a water storage tank and a water supply system, the water supply system comprises a tee joint, a water pump and a negative pressure valve, the tee joint is connected with a water outlet branch, a first water inlet branch and a second water inlet branch, the water outlet branch is connected with the steam generator, the water pump is arranged on the water outlet branch, the first water inlet branch is connected with the water storage tank, and the second water inlet branch is connected with the negative pressure valve. The second water inlet branch is suitable for being connected with an external water source. The negative pressure valve is arranged on the second water inlet branch. By arranging the tee joint and the water pump, the water supply system forms two sets of water supply flow paths which are connected in parallel, one water pump is used as a power source of the two sets of water supply flow paths, and the manufacturing cost can be saved. And the situation that water is stored in the water storage tank due to series connection of the water supply flow paths can be reduced, so that the internal cleanliness of the water storage tank can be improved. The negative pressure valve is used for controlling on-off of the second water inlet branch, the problems that an electromagnetic valve cannot keep working for a long time, and the requirement for continuous water supply cannot be met for long-time cooking can be solved, and the working reliability is improved.

Description

Technical Field

[0001] The utility model relates to the field of cooking equipment, in particular to a cooking device. Background Art

[0002] The steam oven can heat water into steam through a steam generator, and then transmit the steam to the cooking chamber of the steam oven for steaming cooking.

[0003] In the related art, there are still deficiencies in the water supply method of the steam oven, and there is room for improvement. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cooking device having two sets of water supply paths connected in parallel to improve working reliability.

[0005] According to an embodiment of the present invention, the cooking device includes: a steam generator for providing steam; a water storage tank for storing water; a water supply system including a tee, a water pump and a negative pressure valve, the tee being respectively connected to a water outlet branch, a first water inlet branch and a second water inlet branch, the water outlet branch being connected to the steam generator, the water pump being arranged on the water outlet branch, the first water inlet branch being connected to the water storage tank, the second water inlet branch being suitable for connection to an external water source, and the negative pressure valve being arranged on the second water inlet branch.

[0006] The cooking device of the present invention utilizes a tee and a water pump, creating two parallel water supply paths in the water supply system. A single water pump serves as the power source for both paths, reducing manufacturing costs. This also reduces the risk of water accumulation in the water tank due to the series connection of the water supply paths, allowing the water inside the tank to be drained, thereby improving internal cleanliness. Furthermore, a negative pressure valve controls the on / off switching of the second water inlet branch, resolving the issue of the solenoid valve's inability to maintain operation for extended periods, preventing continuous water supply during cooking, and improving operational reliability.

[0007] In some embodiments, the first water inlet branch is a cut-off branch so that the connection between the tee and the water tank can be blocked.

[0008] In some embodiments, the first water inlet branch can be cut off through a detachable connection between the pipeline and the pipe joint, and the connection side between the cutoff point and the tee is blocked by a first plug.

[0009] In some embodiments, the first water inlet branch includes a first pipeline, a first pipe joint, a second pipeline, a second pipe joint and a third pipeline, the first pipeline is connected between the tee and the first pipe joint, the second pipeline is connected between the first pipe joint and the second pipe joint, the third pipeline is connected between the second pipe joint and the water tank, the extension direction of the second pipeline is different from the extension direction of the first pipeline, and the extension direction of the third pipeline is different from the extension direction of the second pipeline; wherein, the first pipe joint is detachably connected to at least one of the first pipeline and the second pipeline; and / or, the second pipe joint is detachably connected to at least one of the second pipeline and the third pipeline.

[0010] In some embodiments, the first pipeline and the third pipeline are both located inside the shell of the cooking device, and the second pipeline includes a main pipe section, a first bend pipe section, and a second bend pipe section. The main pipe section is exposed outside the shell, and the first bend pipe section and the second bend pipe section are respectively connected to the two ends of the main pipe section and are both bent toward the inside of the shell. The first pipe joint is provided at the first bend pipe section and is pluggable connected to the first bend pipe section. The second pipe joint is provided at the second bend pipe section and is pluggable connected to the second bend pipe section. After the first pipe joint is separated from the first bend pipe section, it is sealed by the first plug.

[0011] In some embodiments, the front side of the shell has a pull-out opening, the water tank is arranged inside the shell, and the water tank has a water replenishment box suitable for being pulled forward from the pull-out opening, the water supply system is located on the rear side of the water tank, and the main pipe section is exposed on the rear side of the shell.

[0012] In some embodiments, the cooking device includes an inner shell arranged in the outer shell, the inner shell defines a cooking cavity, the steam generator is used to provide steam to the cooking cavity, the water tank is arranged on the top of the inner shell to be located outside the cooking cavity, and the tee, water pump and negative pressure valve are all located between the inner shell and the outer shell.

[0013] In some embodiments, the second water inlet branch includes a fourth pipe, a fifth pipe, a third pipe joint and a sixth pipe, the fourth pipe is connected between the negative pressure valve and the tee, the fifth pipe is connected between the negative pressure valve and the third pipe joint, the sixth pipe is connected to the third pipe joint and is at least partially exposed outside the outer shell of the cooking device.

[0014] In some embodiments, the third pipe joint is an elbow and is passed through the outer shell, a portion of the third pipe joint is located inside the outer shell to connect with the fifth pipe, and a portion of the third pipe joint is located outside the outer shell to connect with the sixth pipe.

[0015] In some embodiments, the sixth pipeline is detachably connected to the third pipe joint, and the third pipe joint is sealed by a second plug after being separated from the sixth pipeline.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a partial structural schematic diagram of a cooking device according to some embodiments of the present invention;

[0018] Figure 2 is a schematic structural diagram of a water storage tank, a water supply system, and a steam generator according to some embodiments of the present utility model;

[0019] Figure 3 is a top view of a cooking device according to some embodiments of the present invention supplying water through a water storage tank;

[0020] Figure 4 is based on Figure 3 A partial enlarged view of area A of the example shown;

[0021] Figure 5 1 is a top view of a cooking device according to some embodiments of the present invention supplied with water through an external water source.

[0022] Reference numerals:

[0023] Cooking device 1000;

[0024] Steam generator 100;

[0025] Water storage tank 200; water replenishment box 201;

[0026] Water supply system 300;

[0027] Tee 1; water pump 2; negative pressure valve 3; water outlet branch 4; first water inlet branch 5; first pipeline 51; first pipe joint 52; second pipeline 53; main pipe section 531; first elbow section 532; second elbow section 533; second pipe joint 54; third pipeline 55; second water inlet branch 6; fourth pipeline 61; fifth pipeline 62; third pipe joint 63; sixth pipeline 64;

[0028] Housing 400; drawer opening 401;

[0029] Inner shell 500; cooking cavity 501. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, 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 intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0032] The cooking device 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0033] According to the cooking device 1000 of the embodiment of the present invention, Figure 1 As shown, the cooking device 1000 includes: a steam generator 100, a water storage tank 200 and a water supply system 300. The steam generator 100 is used to provide steam, and the water storage tank 200 is used to store water. Figure 2 As shown, the water supply system 300 includes: a tee 1, a water pump 2 and a negative pressure valve 3. The tee 1 is respectively connected to the water outlet branch 4, the first water inlet branch 5 and the second water inlet branch 6. The water outlet branch 4 is connected to the steam generator 100. The water pump 2 is arranged on the water outlet branch 4. The first water inlet branch 5 is connected to the water tank 200. The second water inlet branch 6 is suitable for connection to an external water source. The negative pressure valve 3 is arranged on the second water inlet branch 6.

[0034] The steam generator 100 heats water to generate steam, which is then used to steam and cook food. The water storage tank 200 can supply water to the steam generator 100 through the water supply system 300. However, the water supply system 300 can also supply water to the steam generator 100 from an external water source, thereby improving the problem of insufficient water supply and reduced cooking quality when the water storage tank 200 is used alone to supply water to the steam generator 100.

[0035] The water supply system 300 includes two water supply circuits, each utilizing a common water pump 2, providing two water supply modes: tank water supply and direct water supply. In tank water supply mode, the water tank 200 supplies water to the steam generator 100 via a first water inlet branch 5. In direct water supply mode, an external water source supplies water to the steam generator 100 via a second water inlet branch 6. Using a single water pump 2 as the power source for both water supply circuits reduces manufacturing costs, reduces the structural complexity of the water supply system 300, facilitates its placement on the cooking device 1000, and contributes to the lightweight design of the cooking device 1000.

[0036] The first water inlet branch 5 and the second water inlet branch 6 are respectively connected to the tee 1, so that the water supply path of the water tank and the water supply path of the direct water supply are connected in parallel with each other, and the two water supply paths work independently of each other. When one of them fails, the other can still work normally, thereby improving the working reliability of the water supply system 300.

[0037] Furthermore, compared to a design that connects the first and second water inlet branches in series, first directing external water into the water tank and then solely utilizing the water tank to supply water to the steam generator, the present invention allows water tank 200 to be emptied without the pressure-induced accumulation of water in the water tank due to the series connection of the water supply lines. This improves the cleanliness of the interior of water tank 200 and reduces the risk of water quality deterioration and odor generation caused by prolonged non-use of the cooking device 1000 while the water tank 200 is still filled with water.

[0038] It is worth noting that the water supply system 300 can be installed according to actual needs. Only one of the first water inlet branch 5 and the second water inlet branch 6 can be connected to the tee 1, or both can be connected to the tee 1. For example, when the cooking device 1000 is placed in a location that is not accessible to an external water source, only the first water inlet branch 5 can be connected to the tee 1, and water can be supplied to the steam generator 100 solely through the water tank 200. For another example, when the cooking device 1000 is connected to an external water source that can provide a stable water flow, only the second water inlet branch 6 can be connected to the tee 1, and water can be supplied to the steam generator 100 solely through the external water source. This allows the user to freely choose the water supply method for cooking, and can also select the water supply method according to the usage environment, thereby expanding the application range of the cooking device 1000.

[0039] By installing a negative pressure valve 3 in the second water inlet branch 6 to control the on / off state of the second water inlet branch 6, the negative pressure valve 3 is activated based on the pressure within the second water inlet branch 6. This passively triggered valve addresses the issue of the solenoid valve's inability to maintain operation for extended periods, preventing continuous water supply during cooking. Furthermore, as the cooking device's operating temperature rises, the performance of the solenoid valve degrades. Installing the negative pressure valve 3 improves operational reliability.

[0040] The negative pressure valve 3 controls the opening and closing of the second water inlet branch 6 based on the pressure within the second water inlet branch 6. When the flow path from the negative pressure valve 3 to the steam generator 100 is at positive pressure, indicating that the water pump 2 is not started or the water storage tank 200 is supplying water to the steam generator 100, the negative pressure valve 3 closes the second water inlet branch 6. When the water pump 2 starts, negative pressure is generated in the flow path from the negative pressure valve 3 to the steam generator 100, and the negative pressure valve 3 opens the second water inlet flow path, allowing the water pump 2 to deliver water from the external water source to the steam generator 100.

[0041] According to the cooking device 1000 of the present invention, by providing a T-joint 1 and a water pump 2, the water supply system 300 forms two parallel water supply paths. A single water pump 2 serves as the power source for both paths, reducing manufacturing costs. This also reduces the risk of water accumulation in the water tank 200 due to the series connection of the water supply paths. The water tank 200 can be drained, thereby improving the cleanliness of the interior of the water tank 200. Furthermore, the use of a negative pressure valve 3 to control the opening and closing of the second water inlet branch 6 solves the problem of the solenoid valve's inability to maintain operation for extended periods, preventing continuous water supply during cooking, thereby improving operational reliability.

[0042] In some embodiments of the present invention, the first water inlet branch 5 is a cut-off branch so that the connection between the tee 1 and the water tank 200 can be blocked.

[0043] When the first water inlet branch 5 is cut off, the water tank 200 and the steam generator 100 are disconnected, and an external water source can be used to supply water to the steam generator 100; when the first water inlet branch 5 is connected, the water tank 200 and the steam generator 100 are connected, and the water tank 200 can be used to supply water to the steam generator 100.

[0044] The second water inlet branch 6 is provided with a negative pressure valve 3 to control the opening and closing of the second water inlet branch 6. In the related art, when the first water inlet branch is always connected, it will affect the water pump's ability to draw water from the second water inlet branch. This can also cause water from the second water inlet branch to flow through the tee into the first water inlet branch, causing water to flow back into the water storage tank. Therefore, some embodiments of the present invention design the first water inlet branch 5 as a cutoff branch to improve the operating reliability of the second water inlet branch 6 and enhance the cleanliness of the water storage tank 200.

[0045] In some embodiments of the present invention, the first water inlet branch 5 can be cut off through a detachable connection between the pipeline and the pipe joint, and the connection side between the cutoff point and the tee 1 is blocked by a first plug.

[0046] It is worth noting that the connecting side of the cut-off point of the first water inlet branch 5 and the tee 1 refers to the pipe section that remains connected to the tee 1 after the pipe and pipe joint in the first water inlet pipeline are disassembled, and the first plug blocks the tee 1 to the first water inlet pipeline side.

[0047] By sealing the connecting side between the cut-off point and the tee 1 with the first plug, a seal can be formed between the water pump 2 and the first water inlet branch 5. The water pump 2 can generate negative pressure to draw water from the external water source into the second water inlet branch 6. The external water source can be used to supply water to the steam generator 100. By sealing the connecting side between the cut-off point and the tee 1 with the first plug, the stability of the water supply from the external water source can be improved.

[0048] The cut-off method is not limited to this. For example, a cut-off valve can also be set to cut off the first water inlet branch 5. Compared with setting a cut-off valve, the embodiment of the utility model uses a detachable connection between the pipeline and the pipe joint to achieve a cut-off method, which can reduce the manufacturing cost of the water supply system 300.

[0049] In some embodiments of the present invention, Figure 2 and Figure 4 As shown, the first water inlet branch 5 includes a first pipeline 51, a first pipe joint 52, a second pipeline 53, a second pipe joint 54 and a third pipeline 55. The first pipeline 51 is connected between the tee 1 and the first pipe joint 52, the second pipeline 53 is connected between the first pipe joint 52 and the second pipe joint 54, and the third pipeline 55 is connected between the second pipe joint 54 and the water tank 200. The extension direction of the second pipeline 53 is different from the extension direction of the first pipeline 51, and the extension direction of the third pipeline 55 is different from the extension direction of the second pipeline 53.

[0050] The first water inlet branch 5, running from the tee 1 to the water tank 200, comprises, in order: a first pipeline 51, a first pipe joint 52, a second pipeline 53, a second pipe joint 54, and a third pipeline 55. The first pipeline 51, the second pipeline 53, and the third pipeline 55 are relatively long pipelines. The first pipeline 51 and the second pipeline 53 extend in different directions and are connected by the first pipe joint 52. The second pipeline 53 and the third pipeline 55 also extend in different directions and are connected by the second pipe joint 54.

[0051] By designing the first pipeline 51 and the second pipeline 53 as pipelines with different extension directions, and designing the second pipeline 53 and the third pipeline 55 as pipelines with different extension directions, the extension direction of the first water inlet branch 5 can be changed, thereby reducing the space occupied and adapting to a smaller layout space.

[0052] Among them, the first pipe joint 52 is detachably connected to at least one of the first pipeline 51 and the second pipeline 53; and / or, the second pipe joint 54 is detachably connected to at least one of the second pipeline 53 and the third pipeline 55, thereby achieving the ability to cut off the first water inlet branch 5.

[0053] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the first pipeline 51 and the third pipeline 55 are both located inside the shell 400 of the cooking device 1000, and the second pipeline 53 includes a main pipe section 531, a first bend pipe section 532 and a second bend pipe section 533. The main pipe section 531 is exposed outside the shell 400, and the first bend pipe section 532 and the second bend pipe section 533 are respectively connected to the two ends of the main pipe section 531 and are both bent toward the interior of the shell 400. The first pipe joint 52 is provided at the first bend pipe section 532 and is pluggable connected to the first bend pipe section 532. The second pipe joint 54 is provided at the second bend pipe section 533 and is pluggable connected to the second bend pipe section 533. After the first pipe joint 52 is separated from the first bend pipe section 532, it is sealed by the first plug.

[0054] When the first water inlet branch 5 is cut off, the second pipe 53 and the first pipe joint 52 are disconnected, and the second pipe 53 and the second pipe joint 54 are disconnected. The first pipe 51 and the first pipe joint 52 are still connected to the tee 1, so the first plug is used to block the first pipe joint 52 to create a seal.

[0055] Therefore, the second pipe 53 is designed to be exposed outside the outer shell 400, which is convenient for cutting off the first water inlet branch 5. The operation can be performed from the outside of the cooking device 1000 without removing the outer shell 400, thereby reducing the difficulty of removing and connecting the second pipe 53 and facilitating use.

[0056] By designing the first pipeline 51 and the second pipeline 53 as pipelines with different extension directions, and designing the second pipeline 53 and the third pipeline 55 as pipelines with different extension directions, the second pipeline 53 can be thrown out and exposed outside the housing 400.

[0057] By designing the second pipeline 53 to have a structure with a first curved pipe section 532 and a second curved pipe section 533, it is sufficient to apply axial force toward the first pipe joint 52 and the second pipe joint 54 when disassembling and connecting the second pipeline 53, which can further reduce the difficulty of disassembling and connecting the second pipeline 53 and facilitate use.

[0058] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the front side of the shell 400 has a pull-out port 401, the water tank 200 is arranged in the shell 400, and the water tank 200 has a water replenishment box 201 suitable for being pulled forward from the pull-out port 401, and the water supply system 300 is located on the rear side of the water tank 200.

[0059] The water tank 200 is housed within the housing 400, which protects the water tank 200, reducing the risk of rupture from impact and improving cleanliness. The water refill box 201 of the water tank 200 can be pulled out from a drawer 401 on the front of the housing 400, allowing for direct refilling of the water tank 200 without removing the housing 400, making it easier to use.

[0060] like Figure 3 and Figure 4 As shown, the main pipe section 531 is exposed on the rear side of the housing 400. When the cooking appliance is in use, the front side is used. Therefore, placing the main pipe section 531 on the rear side of the housing 400 can reduce the space occupied by the front of the housing 400 and reduce interference with the second pipe 53 when the cooking appliance is in use, thereby improving the operating reliability of the water supply system 300.

[0061] In some embodiments of the present invention, Figure 1 As shown, the cooking device 1000 includes an inner shell 500 arranged in the outer shell 400, the inner shell 500 defines a cooking cavity 501, the steam generator 100 is used to provide steam to the cooking cavity 501, the water storage tank 200 is arranged on the top of the inner shell 500 to be located outside the cooking cavity 501, and the three-way valve 1, the water pump 2 and the negative pressure valve 3 are all located between the inner shell 500 and the outer shell 400.

[0062] The inner shell 500 defines a cooking cavity 501, and food is placed in the cooking cavity 501 for cooking. The steam generator 100 is used to provide steam to the cooking cavity 501, and steam is used to cook the food. Figure 1The dashed line with an arrow in the middle indicates the direction of steam flow provided by the steam generator 100 to the cooking cavity 501 .

[0063] Water tank 200 is mounted on top of inner housing 500, outside cooking cavity 501. It is located between inner housing 500 and outer housing 400, enhancing operational stability. Furthermore, tee 1, water pump 2, and negative pressure valve 3 are also located between inner housing 500 and outer housing 400, minimizing environmental interference with tee 1, water pump 2, and negative pressure valve 3, improving operational reliability of water supply system 300.

[0064] In some embodiments of the present invention, Figure 1 As shown, the three-way valve 1, the water pump 2 and the negative pressure valve 3 are all located at the top of the inner shell 500. By using one water pump 2 as the power source for two sets of water supply paths, the structural complexity of the water supply system 300 can be reduced, the arrangement of the water supply system 300 at the top of the inner shell 500 can be facilitated, and the weight of the water supply system 300 can be reduced, thereby reducing the pressure on the cooking cavity 501.

[0065] The following describes, with reference to the accompanying drawings, a usage process of the cooking device 1000 according to some embodiments of the present invention in which water is supplied to the steam generator 100 only through an external water source.

[0066] In the first water inlet branch 5, the second pipe 53 exposed in the housing 400 is separated from the first pipe joint 52 and the second pipe joint 54 respectively, and the first pipe joint 52 is blocked with a first plug, and the second water inlet branch 6 is normally connected to the external water source.

[0067] The water pump 2 is started, and the flow path between the tee 1 and the first water inlet branch 5 is blocked. Therefore, the water pump 2 generates negative pressure in the flow path between the tee 1 and the second water inlet branch 6. The negative pressure valve 3 is driven to open, and the water pump 2 introduces water from the external water source into the steam generator 100 to produce steam. The water from the external water source circulates, which can solve the problem of insufficient water supply from the water tank 200 to the steam generator 100, resulting in a decrease in cooking effect.

[0068] Figure 5 The dotted line with an arrow in the middle indicates the direction of water flow when water is supplied from an external water source.

[0069] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the second water inlet branch 6 includes a fourth pipeline 61, a fifth pipeline 62, a third pipe joint 63 and a sixth pipeline 64. The fourth pipeline 61 is connected between the negative pressure valve 3 and the tee 1, the fifth pipeline 62 is connected between the negative pressure valve 3 and the third pipe joint 63, and the sixth pipeline 64 is connected to the third pipe joint 63, and is at least partially exposed to the outside of the outer shell 400 of the cooking device 1000.

[0070] The second water inlet branch 6 from the tee 1 to the external water source is, in sequence: the fourth pipeline 61, the negative pressure valve 3, the fifth pipeline 62, the third pipe joint 63 and the sixth pipeline 64. The sixth pipeline 64 is connected to the external water source, so the sixth pipeline 64 is at least partially exposed outside the outer shell 400 of the cooking device 1000.

[0071] In some embodiments of the present invention, Figure 2 and Figure 5 As shown, the third pipe joint 63 is an elbow and is disposed in the housing 400 . A portion of the third pipe joint 63 is located inside the housing 400 to connect with the fifth pipe 62 , and a portion of the third pipe joint 63 is located outside the housing 400 to connect with the sixth pipe 64 .

[0072] The third pipe joint 63 is passed through the outer shell 400 to connect the internal fifth pipe 62 and the external sixth pipe 64. The third pipe joint 63 is an elbow so that the sixth pipe 64 can be a straight pipe, which can reduce the space occupied by the sixth pipe 64.

[0073] like Figure 5 As shown, the third pipe joint 63 passes through the housing 400 in the front-to-back direction. The third pipe joint 63 is an elbow so that the sixth pipe 64 can extend in the left-right direction.

[0074] In some embodiments of the present invention, the sixth pipeline 64 is detachably connected to the third pipe joint 63 , and the third pipe joint 63 is sealed by the second plug after being separated from the sixth pipeline 64 .

[0075] When there is no need to connect the external water source to the steam generator 100, the external sixth pipe 64 can be disconnected from the third pipe joint 63, the second water inlet branch 6 can be disconnected, and water can be supplied to the steam generator 100 using the water storage tank 200. After the third pipe joint 63 is separated from the sixth pipe 64, the space occupied can be reduced. Subsequently, the third pipe joint 63 can be sealed with the second plug to improve cleanliness and prevent dust and other contaminants from entering the pipe.

[0076] Therefore, the sixth pipe 64 is designed to be exposed outside the shell 400, which facilitates the disassembly and connection of the sixth pipe 64 and the third pipe joint 63. The operation can be performed from the outside of the cooking device 1000 without removing the shell 400, which is convenient to use.

[0077] In some embodiments of the present invention, Figure 1 and Figure 5As shown, the cooking device 1000 includes an inner shell 500 arranged in the outer shell 400, the inner shell 500 defines a cooking cavity 501, the tee 1, the water pump 2 and the negative pressure valve 3 are all located between the inner shell 500 and the outer shell 400, the fourth pipeline 61 and the fifth pipeline 62 are located between the inner shell 500 and the outer shell 400 and are located on the rear side of the cooking cavity 501, the third pipe joint 63 is passed through the rear side of the outer shell 400, and the sixth pipeline 64 is exposed on the rear side of the outer shell 400.

[0078] When the cooking utensil is in use, the front side is the usable space, so setting the sixth pipe 64 on the rear side of the shell 400 can reduce the occupation of the front space of the shell 400, and can reduce the interference with the sixth pipe 64 when the cooking utensil is in use, thereby improving the working reliability of the water supply system 300.

[0079] The following describes, with reference to the accompanying drawings, a usage process of the cooking device 1000 according to some embodiments of the present invention, in which water is supplied to the steam generator 100 only through the water storage tank 200 .

[0080] In the second water inlet branch 6, the sixth pipe 64 exposed outside the housing 400 is connected to the third pipe joint 63, and the third pipe joint 63 is sealed with a second plug. The first water inlet branch 5 is normally connected to the water tank 200.

[0081] The flow path between the tee 1 and the second water inlet branch 6 is blocked, and the negative pressure valve 3 blocks the second water inlet branch 6. The water pump 2 directs water from the water tank 200 to the steam generator 100 to produce steam. The water tank 200 can be refilled from outside the cooking device 1000 through the drawer port 401 to address insufficient water in the water tank 200.

[0082] Figure 3 The dotted line with an arrow in the middle is the direction of water flow when the water tank is supplied with water.

[0083] Without limitation thereto, the cooking device 1000 of some embodiments of the present application may also solve the problem of insufficient water supply leading to reduced cooking effect by switching the water supply source.

[0084] First, the first water inlet branch 5 and the second water inlet branch 6 are both connected normally. Water pump 2 is started, and positive pressure is established in the flow path between the tee 1 and the second water inlet branch 6. The negative pressure valve 3 blocks the second water inlet branch 6, and water pump 2 directs water from the water storage tank 200 into the steam generator 100 to produce steam.

[0085] After the water in the water tank 200 is drained, the water pump 2 is first turned off, and then the second pipe 53 exposed in the outer shell 400 is separated from the first pipe joint 52 and the second pipe joint 54 respectively, and the first pipe joint 52 is sealed with a first plug, and the second water inlet branch 6 is normally connected to the external water source.

[0086] The water pump 2 is started again, and the water pump 2 generates negative pressure in the flow path between the tee 1 and the second water inlet branch 6. The negative pressure valve 3 is driven to open, and the water pump 2 introduces water from the external water source into the steam generator 100 to produce steam.

[0087] By switching the water supply source, the problem of insufficient water supply from the water storage tank 200 to the steam generator 100, which leads to reduced cooking effect, can be solved.

[0088] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0089] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0090] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0091] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0093] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cooking device, characterized in that: include: a steam generator for providing steam; Water storage tank, used to store water; The water supply system includes a tee, a water pump and a negative pressure valve. The tee is respectively connected to the water outlet branch, the first water inlet branch and the second water inlet branch. The water outlet branch is connected to the steam generator. The water pump is arranged on the water outlet branch. The first water inlet branch is connected to the water storage tank. The second water inlet branch is suitable for connecting to an external water source. The negative pressure valve is arranged on the second water inlet branch.

2. The cooking device according to claim 1, wherein: The first water inlet branch is a cut-off branch so that the connection between the tee and the water tank can be blocked.

3. The cooking device according to claim 2, wherein: The first water inlet branch can be cut off through a detachable connection between the pipeline and the pipe joint, and the cut-off point and the communicating side of the tee are blocked by a first plug.

4. The cooking device according to claim 3, wherein: The first water inlet branch includes a first pipeline, a first pipe joint, a second pipeline, a second pipe joint, and a third pipeline. The first pipeline is connected between the tee and the first pipe joint, the second pipeline is connected between the first pipe joint and the second pipe joint, and the third pipeline is connected between the second pipe joint and the water tank. The second pipeline extends in a direction different from that of the first pipeline, and the third pipeline extends in a direction different from that of the second pipeline. The first pipe joint is detachably connected to at least one of the first pipeline and the second pipeline; and / or the second pipe joint is detachably connected to at least one of the second pipeline and the third pipeline.

5. The cooking device according to claim 4, wherein: The first pipe and the third pipe are both located inside the shell of the cooking device. The second pipe includes a main pipe section, a first bent pipe section, and a second bent pipe section. The main pipe section is exposed outside the shell. The first bent pipe section and the second bent pipe section are respectively connected to the two ends of the main pipe section and are both bent toward the inside of the shell. The first pipe joint is provided at the first bent pipe section and is pluggable connected to the first bent pipe section. The second pipe joint is provided at the second bent pipe section and is pluggable connected to the second bent pipe section. After the first pipe joint is separated from the first bent pipe section, it is sealed by the first plug.

6. The cooking device according to claim 5, characterized in that The front side of the shell has a pull-out opening, the water tank is arranged in the shell, and the water tank has a water replenishment box suitable for being pulled forward from the pull-out opening, the water supply system is located on the rear side of the water tank, and the main pipe section is exposed on the rear side of the shell.

7. The cooking device according to claim 6, characterized in that The cooking device includes an inner shell arranged in the outer shell, the inner shell defines a cooking cavity, the steam generator is used to provide steam to the cooking cavity, the water storage tank is arranged on the top of the inner shell to be located outside the cooking cavity, and the three-way valve, water pump and negative pressure valve are all located between the inner shell and the outer shell.

8. The cooking device according to claim 1, wherein The second water inlet branch includes a fourth pipeline, a fifth pipeline, a third pipe joint and a sixth pipeline. The fourth pipeline is connected between the negative pressure valve and the tee, the fifth pipeline is connected between the negative pressure valve and the third pipe joint, and the sixth pipeline is connected to the third pipe joint and is at least partially exposed outside the outer shell of the cooking device.

9. The cooking device according to claim 8, wherein The third pipe joint is an elbow and is passed through the shell. A portion of the third pipe joint is located inside the shell to connect with the fifth pipe, and a portion of the third pipe joint is located outside the shell to connect with the sixth pipe.

10. The cooking device according to claim 9, characterized in that The sixth pipeline is detachably connected to the third pipe joint, and the third pipe joint is sealed by a second plug after being separated from the sixth pipeline.

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