Improvements in steam ovens

Abstract

The utility model discloses an improved structure of steam oven, including machine body and setting in the water supply system and controlling means of machine body, and the water supply system includes water pump, inlet pipe and water inlet, and water pump is connected water inlet through inlet pipe, and machine body is equipped with detachable water tank subassembly, and water tank subassembly is equipped with water outlet, and water inlet and water outlet plug in lead through, still include condenser water level sensing switch, and inlet pipe is non -metal material, and the inductive part of condenser water level sensing switch sets up in the outside of inlet pipe and is close to water inlet one end, and condenser water level sensing switch and controlling means electric connection, when condenser water level sensing switch senses that there is no water in inlet pipe, and condenser water level sensing switch sends power signal to controlling means, and controlling means sends no water warning signal, compared with prior art, the utility model discloses, need not set up floater in water tank, and condenser water level sensing switch installs directly in machine body, and the whole structure design is reasonable. Condenser water level sensing switch need not contact water, and use is more sanitary.

Description

Technical Field

[0001] This utility model relates to the field of steam oven technology, specifically to an improved structure for a steam oven. Background Technology

[0002] Most existing steam ovens use water tanks as their steam source. During operation, the steam oven must detect the water level in the tank to meet the steam generation requirements. When the water level is low or there is no water, a signal needs to be sent to remind the user to add water. Current methods for detecting the water level involve a float-based sensor switch inside the tank. This means a float rises and falls with the water level, and the float contains a magnetic material. A magnetic induction switch is located outside the tank to detect the float's movement. Typically, the water tank needs to be removable from the steam oven, so the signal transmission between the magnetic induction switch and the oven must be considered. Even if the magnetic induction switch is located on the oven itself, the float's limiting position and the sensing distance between the switch and the float need to be addressed. Utility Model Content

[0003] The purpose of this invention is to provide an improved structure for a steam oven that eliminates the need for a float to detect water levels.

[0004] The purpose of this utility model is achieved as follows.

[0005] An improved structure for a steam oven includes a body and a water supply system and a control device disposed within the body. The water supply system includes a water pump, a water inlet pipe, and a water inlet. The water pump is connected to the water inlet via the water inlet pipe. The body has a detachable water tank assembly with a water outlet. The water inlet and outlet are connected by a plug-in connection. The system also includes a capacitive water level sensor switch. The water inlet pipe is made of non-metallic material. The sensing part of the capacitive water level sensor switch is located on the outside of the water inlet pipe and near the water inlet end. The capacitive water level sensor switch and the control device are electrically connected. When the capacitive water level sensor switch senses that no water is flowing through the water inlet pipe, it sends a power signal to the control device, and the control device issues a no-water warning signal.

[0006] Furthermore, the sensing element of the capacitive water level sensor switch is a capacitive sensing spring, which is sleeved on the outer wall of the inlet pipe. The capacitive water level sensor switch provides more accurate detection, capable of detecting even minute water flow rates within the inlet pipe.

[0007] Furthermore, the height of the inlet is higher than that of the water pump, and a vertical part is provided at one end of the inlet pipe. The inlet pipe is connected to the inlet through the vertical part, and the sensing part of the capacitive water level sensor switch is fixed at the top of the vertical part.

[0008] Water is less likely to accumulate in the vertical section, thus preventing water accumulation in the inlet pipe from interfering with the detection of the capacitive water level sensor switch.

[0009] Furthermore, a fixing groove is provided on the top of the machine body, and a protrusion is provided on one side of the fixing groove. The top surface of the protrusion is provided with the water inlet. A coupling device is provided on the machine body corresponding to the water inlet. The top opening of the coupling device is connected to the water inlet, and the bottom outlet of the coupling device is connected to the water inlet pipe. The coupling device facilitates the sealed connection between the water inlet and the water inlet pipe.

[0010] Furthermore, the coupling device includes a mounting base, a support plate, and a sealing sleeve. The mounting base has a mounting cavity, and a connecting pipe is provided at the bottom of the mounting base. The top of the connecting pipe communicates with the mounting cavity, and the bottom of the connecting pipe is connected to and communicates with the water inlet pipe sleeve. The top of the mounting cavity is open, and the bottom surface of the mounting cavity has several protrusions. The support plate sits on the top surface of the protrusions, and the center of the support plate has a first through hole. The top of the sealing sleeve is T-shaped, and the bottom of the sealing sleeve is placed in the mounting cavity. The mounting base and the machine body are connected and fixed to clamp the outer edge of the top of the sealing sleeve, and the hollow part of the sealing sleeve is aligned with the first through hole.

[0011] The coupling device has a simple structure, making it easy to connect the inlet pipe and the outlet of the water tank assembly, and easy to assemble and disassemble.

[0012] Furthermore, the water tank assembly includes a tank body and a cover body. A recess is provided on one side of the tank body, and a connecting seat is formed inside the recess. The connecting seat has an inverted U-shaped water guiding channel. The inner end of the inverted U-shaped water guiding channel is connected to the bottom of the connecting seat and the bottom surface of the tank body. The outer end of the inverted U-shaped water guiding channel extends downward out of the recess. The outer end of the inverted U-shaped water guiding channel is inserted into a sealing sleeve, and the inner edge of the sealing sleeve abuts against the side of the outer end of the inverted U-shaped water guiding channel for sealing.

[0013] The suction force of the water pump can draw water out of the tank.

[0014] Furthermore, the connecting seat forms a first vertical channel and a second vertical channel. The bottom of the first vertical channel extends downward into a recess, and the bottom of the second vertical channel has a notch that communicates with the inner cavity of the bottom of the box. The connecting seat forms a horizontal groove with an open top surface between the first vertical channel and the second vertical channel. The bottom surfaces of both ends of the horizontal groove communicate with the first vertical channel and the second vertical channel, respectively. The top of the connecting seat is provided with a fixing cover and a sealing gasket. The fixing cover and the connecting seat are connected and fixed to clamp the sealing gasket. The sealing gasket is fixed in the water tank and seals the top surface of the water tank. The bottom of the sealing gasket has a groove that connects the first vertical channel and the second vertical channel to form the inverted U-shaped water guiding channel.

[0015] The inverted U-shaped water channel is easy to manufacture, and the sealing gasket makes the inverted U-shaped water channel airtight.

[0016] Compared to existing technologies, this invention eliminates the need for a float inside the water tank; the capacitive water level sensor switch is directly installed within the machine body, resulting in a more rational overall structural design. Furthermore, the capacitive water level sensor switch does not come into contact with water, making it more hygienic to use. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of Embodiment 1.

[0018] Figure 2 This is a partial structural diagram of Example 1.

[0019] Figure 3 This is a partial exploded view of the structure of Example 1.

[0020] Figure 4 This is a partial cross-sectional structural diagram of Example 1.

[0021] Figure 5 This is a partial cross-sectional structural diagram of Example 1.

[0022] Figure 6 This is a schematic diagram of the exploded structure of Example 1.

[0023] Figure 7 This is an exploded view of the water tank assembly in Example 1. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example 1, see Figure 1-7 As shown, an improved structure for a steam oven includes a body 1 and a water supply system 2, a capacitive water level sensor switch 3, and a control device 9 disposed within the body 1.

[0026] The water supply system 2 includes a water pump 21, an inlet pipe 22, and an inlet 23. The water pump 21 is connected to the inlet 23 via the inlet pipe 22. The main body 1 is equipped with a detachable water tank assembly 70, which has an outlet. The inlet 23 and the outlet are connected by a plug-in connection. The inlet pipe 22 is made of non-metallic material. The sensing part of the capacitive water level sensor switch 3 is located on the outside of the inlet pipe 22 and near the inlet 23. The capacitive water level sensor switch 3 is electrically connected to the control device 9. The outlet of the water pump 21 is connected to a steam generator to heat the water into steam.

[0027] In this embodiment, the sensing element of the capacitive water level sensor switch 3 is a capacitive sensing spring 31, which is sleeved on the outer wall of the water inlet pipe 22. The height of the water inlet 23 is higher than the height of the water pump 21. One end of the water inlet pipe 22 is provided with a vertical part 20, and the water inlet pipe 22 is connected to the water inlet 23 through the vertical part 20. The sensing element of the capacitive water level sensor switch 3 is fixed to the top of the vertical part 20. The capacitive water level sensor switch is prior art.

[0028] The top of the body 1 is provided with a fixing groove 11, and a protrusion 12 is provided on one side of the fixing groove 11. The top surface of the protrusion 12 is provided with the water inlet 23. The body 1 is provided with a coupling device 40 corresponding to the water inlet. The top opening of the coupling device 40 is connected to the water inlet 23, and the bottom outlet of the coupling device 40 is connected to the water inlet pipe 22. The coupling device 40 includes a mounting base 4, a support plate 5, and a sealing sleeve 6. The mounting base 4 is provided with a mounting cavity 41. The bottom of the mounting base 4 is provided with a connecting pipe 42. The top of the connecting pipe 42 is connected to the mounting cavity 41, and the bottom of the connecting pipe 42 is inserted and connected to the water inlet pipe 22. The top of the mounting cavity 41 is open, and the bottom surface of the mounting cavity 41 is provided with several protrusions 43. The support plate 5 sits on the top surface of the protrusions 43. The center of the support plate 5 is provided with a first through hole 50. The top of the sealing sleeve 6 is T-shaped, and the bottom of the sealing sleeve 6 is placed in the mounting cavity 41. The mounting base 4 and the body 1 are connected and fixed to clamp the outer edge of the top of the sealing sleeve 6. The hollow part of the sealing sleeve 6 is aligned with the first through hole 50.

[0029] The water tank assembly 70 includes a tank body 7 and a cover 72. A recess 71 is provided on one side of the tank body 7. A connecting seat 8 is formed inside the recess 71 of the tank body 7. The connecting seat 8 is provided with an inverted U-shaped water guiding channel 80. The inner end of the inverted U-shaped water guiding channel 80 is connected to the bottom surface of the tank body 7 at the bottom of the connecting seat 8. The outer end of the inverted U-shaped water guiding channel 80 extends downward out of the recess 71. The outer end of the inverted U-shaped water guiding channel 80 is inserted into the sealing sleeve 6. The inner edge of the sealing sleeve 6 abuts against the side of the outer end of the inverted U-shaped water guiding channel 80 to seal. The connecting seat 8 has a first vertical channel 81 and a second vertical channel 82. The bottom of the first vertical channel 81 extends downward into a recess 71. The bottom of the second vertical channel 82 has a notch 83 that communicates with the bottom cavity of the box body 7. The connecting seat 8 forms a horizontal groove 84 with an open top surface between the first vertical channel 81 and the second vertical channel 82. The bottom surfaces of both ends of the horizontal groove 84 communicate with the first vertical channel 81 and the second vertical channel 82, respectively. The top of the connecting seat 8 has a fixing cover 85 and a sealing gasket 86. The fixing cover 85 is connected and fixed to the connecting seat 8 and clamps the sealing gasket 86. The sealing gasket 86 is fixed in the water tank and seals the top surface of the water tank. The bottom of the sealing gasket 86 has a groove 87 that connects the first vertical channel 81 and the second vertical channel 82 to form the inverted U-shaped water guiding channel 80.

[0030] After the water tank assembly 70 is installed into the fixing groove 11, the control device 9 controls the water pump 21 to start. The water pump 21 generates suction, which draws water from the water tank into the water pump 21 through the notch 83, the second vertical channel 82, the groove 87, the first vertical channel 81, the sealing sleeve 6, the mounting cavity 41, the first through hole 50, the connecting pipe, and the water inlet pipe 22. The water pump 21 then outputs the water to the steam generator to be heated into steam. During this process, when the capacitive water level sensor 3 senses that water is flowing through the water inlet pipe 22, the control device 9 controls the water pump 21 and the steam generator to operate normally. If the capacitive water level sensor 3 senses that no water is flowing through the water inlet pipe 22, the capacitive water level sensor 3 sends a signal to the control device 9, and the control device 9 issues a no-water warning signal and controls the water pump 21 and the steam generator to shut down.

[0031] The terms used in this utility model, such as "first," "second," etc., do not indicate any order, quantity, or importance, but are only used for distinction.

[0032] In this invention, terms such as "a" or "an" are used to indicate not a limitation on the quantity, but rather to indicate the existence of at least one of the mentioned objects.

[0033] In this utility model, terms indicating direction or location such as front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are used to indicate relative positions rather than absolute positions.

[0034] Terms used in this invention, such as "approximately," "overall," "approximately," and "similar," are limiting terms used to indicate features that exist but allow for certain deviations. The amount of deviation allowed may vary depending on the specific context.

Claims

1. An improved structure for a steam oven, comprising a body (1) and a water supply system (2) and a control device (9) disposed within the body (1), wherein the water supply system (2) comprises a water pump (21), a water inlet pipe (22) and a water inlet (23), the water pump (21) being connected to the water inlet (23) via the water inlet pipe (22), the body (1) being provided with a detachable water tank assembly (70), the water tank assembly (70) being provided with a water outlet, and the water inlet (23) and the water outlet being connected by a plug-in connection, characterized in that, It also includes a capacitor water level sensor switch (3), the water inlet pipe (22) is made of non-metallic material, the sensing part of the capacitor water level sensor switch (3) is located outside the water inlet pipe (22) and close to the end of the water inlet (23), the capacitor water level sensor switch (3) and the control device (9) are electrically connected, when the capacitor water level sensor switch (3) senses that there is no water passing through the water inlet pipe (22), the capacitor water level sensor switch (3) sends a power signal to the control device (9), and the control device (9) sends a no-water reminder signal.

2. The improved structure of the steam oven according to claim 1, characterized in that, The sensing part of the capacitive water level sensor switch (3) is a capacitive sensing spring (31), which is sleeved on the outer wall of the water inlet pipe (22).

3. The improved structure of the steam oven according to claim 1, characterized in that, The height of the inlet (23) is higher than that of the water pump (21). One end of the inlet pipe (22) is provided with a vertical part (20). The inlet pipe (22) is connected to the inlet (23) through the vertical part (20). The sensing part of the capacitor water level sensor switch (3) is fixed on the top of the vertical part (20).

4. The improved structure of the steam oven according to claim 1, characterized in that, The top of the body (1) is provided with a fixing groove (11), and a protrusion (12) is provided on one side of the fixing groove (11). The top surface of the protrusion (12) is provided with the water inlet (23). The body (1) is provided with a coupling device (40) corresponding to the water inlet. The top opening of the coupling device (40) is connected to the water inlet (23), and the bottom outlet of the coupling device (40) is connected to the water inlet pipe (22).

5. The improved structure of the steam oven according to claim 4, characterized in that, The coupling device (40) includes a mounting base (4), a support plate (5), and a sealing sleeve (6). The mounting base (4) has a mounting cavity (41) inside. The bottom of the mounting base (4) has a connecting pipe (42). The top of the connecting pipe (42) is connected to the mounting cavity (41). The bottom of the connecting pipe (42) is connected to the water inlet pipe (22) and communicates with it. The top of the mounting cavity (41) is open. The bottom surface of the mounting cavity (41) has several protrusions (43). The support plate (5) sits on the top surface of the protrusions (43). The center of the support plate (5) has a first through hole (50). The top of the sealing sleeve (6) is T-shaped. The bottom of the sealing sleeve (6) is placed inside the mounting cavity (41). The mounting base (4) and the body (1) are connected and fixed to clamp the outer edge of the top of the sealing sleeve (6). The hollow part of the sealing sleeve (6) is aligned with the first through hole (50).

6. The improved structure of the steam oven according to claim 5, characterized in that, The water tank assembly (70) includes a tank body (7) and a cover (72). A recess (71) is provided on one side of the tank body (7). A connecting seat (8) is formed in the recess (71) of the tank body (7). The connecting seat (8) is provided with an inverted U-shaped water guiding channel (80). The inner end of the inverted U-shaped water guiding channel (80) is connected to the bottom of the connecting seat (8) and the bottom surface of the tank body (7). The outer end of the inverted U-shaped water guiding channel (80) extends downward out of the recess (71). The outer end of the inverted U-shaped water guiding channel (80) is inserted into the sealing sleeve (6). The inner edge of the sealing sleeve (6) and the side of the outer end of the inverted U-shaped water guiding channel (80) abut against each other to seal.

7. The improved structure of the steam oven according to claim 6, characterized in that, The connecting seat (8) forms a first vertical channel (81) and a second vertical channel (82). The bottom of the first vertical channel (81) extends downward into a recess (71). The bottom of the second vertical channel (82) is provided with a notch (83) that communicates with the bottom cavity of the box (7). The connecting seat (8) forms a horizontal groove (84) with an open top surface between the first vertical channel (81) and the second vertical channel (82). The bottom surfaces of both ends of the horizontal groove (84) are respectively connected to the first vertical channel (81) and the second vertical channel (82). The top of the connecting seat (8) is provided with a fixing cover (85) and a sealing gasket (86). The fixing cover (85) and the connecting seat (8) are connected and fixed to clamp the sealing gasket (86). The sealing gasket (86) is fixed in the water tank and seals the top surface of the water tank. The bottom of the sealing gasket (86) is provided with a groove (87) that connects the first vertical channel (81) and the second vertical channel (82) to form the inverted U-shaped water guiding channel (80).

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