Automatic water storage cleaning mechanism and range hood

Abstract

The utility model provides an automatic water storage cleaning mechanism and a range hood. The automatic water storage cleaning mechanism comprises a volute and a spraying device, an impeller is arranged in the volute, a water storage cavity is formed in the bottom of the volute, and the bottom of the impeller is located in the water storage cavity; a liquid outlet is formed in the outer wall of the water storage cavity and provided with a plugging device. The range hood provided by the utility model comprises the automatic water storage cleaning mechanism. When the cleaning device is used for cleaning the volute and the impeller in the air duct of the range hood, the contact area between the volute and the impeller and water can be increased, the cleaning time can be prolonged, and then the cleaning rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to an automatic water storage and cleaning mechanism and a range hood. Background Art

[0002] Chinese cooking mostly uses high heat stir-frying and steaming and stewing. During the cooking process, a large amount of oil smoke and water vapor will be generated. More and more oil will adhere to the volute and impeller inside the air duct of the range hood, causing the weight of the impeller to increase, the rotation resistance to increase, the rotation balance to fail, the noise to increase, the ability to absorb and exhaust oil smoke to weaken, and the internal oil will produce unpleasant odors, affecting the product experience and reliability. Therefore, the range hood not only needs to have a larger air volume and oil smoke absorption and exhaust capabilities, but also needs to have a self-cleaning function to clean the volute and impeller inside the air duct, so that the air duct maintains a high degree of cleanliness, the volute and impeller can keep running smoothly, and improve the product life and user experience.

[0003] Currently, most of the range hoods with automatic cleaning function on the market use high-temperature steam cleaning or cold water cleaning solutions. The water is heated by a water pump and a heater, and then when the impeller rotates, the steam or water sprayed from the nozzle connected to the water pump flushes the impeller blades, thereby achieving the effect of cleaning the impeller.

[0004] Due to the limitations of factors such as the short automatic cleaning time of the nozzle, insufficient cleaning water, and low water pump pressure, the contact time between the volute impeller and water is short, only a few minutes, and the contact area is small. The oil stains on the surface of the volute and impeller cannot be fully cleaned, the cleaning rate is low, and the cleaning effect is not ideal.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The utility model aims to provide an automatic water storage cleaning mechanism, which can increase the contact area between the volute and impeller and water and the cleaning time when cleaning the volute and impeller in the air duct of the range hood, thereby improving the cleaning rate.

[0007] Another object of the utility model is to provide a range hood, which includes the above-mentioned automatic water storage and cleaning mechanism, which can increase the contact area between the volute and impeller and water and the cleaning time when cleaning the volute and impeller in the air duct, thereby improving the cleaning rate.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An automatic water storage cleaning mechanism, comprising a volute and a spray device;

[0010] An impeller is arranged in the volute, a water storage chamber is formed at the bottom of the volute, and the bottom of the impeller is located in the water storage chamber; a liquid discharge port is arranged on the outer wall of the water storage chamber, and a sealing device is arranged at the liquid discharge port.

[0011] According to one embodiment of the utility model, the blocking device includes a drain pipe and a driving mechanism;

[0012] One end of the drain pipe is connected to the drain port, and the other end is connected to the driving mechanism; the end of the drain pipe can be driven by the driving mechanism and move between a first position and a second position; the height of the first position is higher than the top of the water storage chamber, and the height of the second position is lower than the drain port.

[0013] According to one embodiment of the utility model, the driving mechanism includes a driving motor and a pulley; the output shaft of the driving motor is connected to the middle part of the pulley, a traction rope is wound around the pulley, and the end of the traction rope is fixedly connected to the end of the drainage pipe.

[0014] According to one embodiment of the utility model, the automatic water storage and cleaning mechanism also includes a vertical water guide groove; a vertical guide groove is provided on the side of the water guide groove; a connecting head is provided at the end of the drain pipe, one end of the connecting head is connected to the drain pipe, and the other end is provided with an annular protrusion, the protrusion is located in the water guide groove, and the outer diameter of the protrusion is greater than the width of the guide groove.

[0015] According to one embodiment of the utility model, a circular mounting groove is provided at the top of the guide groove, the mounting groove is communicated with the guide groove, and the inner diameter of the mounting groove is greater than or equal to the outer diameter of the protrusion.

[0016] According to one embodiment of the utility model, the connecting head is provided with a connecting ring which can rotate around the connecting head, the top of the connecting ring has a through hole, and the end of the traction rope is fixedly connected to the through hole.

[0017] According to one embodiment of the present invention, the impeller is connected to a control device so that the impeller can rotate forward and reverse.

[0018] According to one embodiment of the utility model, the spray device includes a nozzle, a water spray pipe, a water pump and a water tank connected in sequence; the nozzle faces the impeller, the nozzle is connected to one end of the water spray pipe, the other end of the water spray pipe is connected to the water outlet end of the water pump, and the water inlet end of the water pump is connected to the water tank.

[0019] The utility model also provides a range hood, comprising the automatic water storage and cleaning mechanism.

[0020] According to an embodiment of the utility model, the automatic water storage and cleaning mechanism is located in the air duct of the range hood, and the driving mechanism of the blocking device is located at the top of the air duct.

[0021] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0022] (1) The automatic water storage cleaning mechanism and the range hood provided by the embodiment of the utility model can increase the contact area between the volute impeller and water and the cleaning time by setting a water storage chamber at the bottom of the volute, thereby improving the cleaning rate.

[0023] (2) In order to realize the water storage function of the volute, the drainage port (oil leakage port) at the bottom of the volute needs to be sealed. The automatic water storage cleaning mechanism and range hood provided by the embodiment of the utility model use the driving motor to provide the ascending power to lift the outlet end of the drainage pipe to the first position above the water level of the water storage chamber. The U-shaped communicating vessel principle is used. The pressure and water level on both sides of the communicating vessel are the same. When the outlet end of the drainage pipe is higher than the water level of the volute, the water level in the drainage pipe is lower than the outlet end, so that the water storage chamber at the bottom of the volute is stored, so as to increase the contact area and contact time between the volute impeller and the water. Under the traction of the high-speed rotating airflow of the impeller and its own gravity, the water at the bottom of the volute will form a tidal surfing effect, flushing the impeller and the inner wall of the bottom of the volute, thereby improving the cleaning effect. After the impeller and volute are cleaned, the driving motor provides the descending power to descend the end of the drainage pipe to the second position, which is lower than the position of the drainage port of the volute. The oil and water in the volute are discharged smoothly under the action of gravity.

[0024] (3) The automatic water storage cleaning mechanism and the range hood provided by the embodiment of the utility model have a driving mechanism of the automatic water storage mechanism arranged at a position away from the air duct, away from oil smoke and water vapor, and no special sealing protection is required for the driving mechanism. In addition, water storage and drainage can be achieved only by driving the end of the drain pipe to rise and fall. The solution is simple and reliable, does not require additional sealing and other structures, and has low cost.

[0025] (4) In order to further improve the cleaning rate of the volute and the impeller, the automatic water storage cleaning mechanism and the range hood provided by the embodiments of the utility model can appropriately increase the water storage time in the volute and the impeller rotation time during cleaning. The impeller adopts forward and reverse rotation modes during cleaning. Compared with the impeller rotating in the same direction, the cleaning ability of the front and back sides of the impeller blades can be improved, and at the same time, a larger surge can be obtained, thereby improving the cleaning ability of the inner wall of the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0027] Figure 1 A schematic diagram of the structure of an automatic water storage and cleaning mechanism provided in an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the structure of the driving mechanism of the automatic water storage and cleaning mechanism provided in an embodiment of the utility model;

[0029] Figure 3 An exploded schematic diagram of a driving mechanism of an automatic water storage and cleaning mechanism provided in an embodiment of the utility model;

[0030] Figure 4 A schematic diagram of the structure of the automatic water storage and cleaning mechanism provided by an embodiment of the utility model when storing water;

[0031] Figure 5 A schematic structural diagram of the automatic water storage and cleaning mechanism provided in an embodiment of the utility model during drainage.

[0032] Description of reference numerals:

[0033] 1. volute; 11. impeller; 2. spray device; 21. nozzle; 22. water spray pipe; 23. water pump; 24. water tank; 3. air duct; 4. drain pipe; 5. drive mechanism; 51. drive motor; 511. output shaft; 52. pulley; 521. guide groove for traction rope; 53. traction rope; 54. fixed bracket; 55. first retaining spring; 6. water guide groove; 61. guide groove; 62. mounting groove; 7. connector; 71. raised portion; 72. connecting ring; 73. annular boss; 74. second retaining spring. DETAILED DESCRIPTION

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0035] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] like Figure 1 As shown, an embodiment of the utility model provides an automatic water storage cleaning mechanism, including a volute 1 and a spray device 2, which are arranged in an air duct 3 of a range hood.

[0037] The volute 1 is provided with an impeller 11, which rotates in the volute 1 to provide power for sucking and discharging oil smoke. The bottom of the volute 1 is closed to the outside to form a water storage chamber, and the bottom of the impeller 11 is located in the water storage chamber. The water storage chamber can collect the oil droplets and water droplets accumulated and dropped on the volute 1 and the impeller 11 when the impeller is in normal working state. When the impeller 11 and the volute 1 need to be cleaned, the water sprayed by the spray device 2 to the impeller 11 and the volute 1 can be collected by the water storage chamber, and then the impeller 11 is fully soaked and further cleaned. The outer wall of the water storage chamber is provided with a drain port, preferably at the bottom of the water storage chamber, so as to completely discharge the liquid in the water storage chamber. The drain port is provided with a blocking device (such as a solenoid valve) to close the water storage chamber, so that it can collect the water sprayed by the spray device 2 and fill the water storage chamber.

[0038] The automatic water storage cleaning mechanism provided in the present embodiment can collect the sprayed water and / or detergent into the water storage chamber when the spray device 2 sprays and cleans the volute 1 and the impeller 11. When the water in the water storage chamber reaches the washing amount, the impeller 11 can be immersed for a long time to increase the contact area and cleaning time between the volute 1 and the impeller 11 and the water, thereby improving the cleaning effect. After the impeller 11 is turned on to rotate, the water in the water storage chamber will form a tidal surfing effect under the traction of the high-speed rotating airflow of the impeller 11 and its own gravity, and flush the impeller 11 and the inner wall at the bottom of the volute 1, thereby improving the cleaning effect.

[0039] In order to further improve the cleaning effect, the impeller 11 is connected to a control device so that the impeller 11 can rotate forward and reverse. Compared with the impeller 11 rotating in the same direction, the forward and reverse rotation can improve the cleaning ability of the front and back sides of the impeller 11 blades, and at the same time obtain a larger surge, thereby improving the cleaning ability of the inner wall of the volute 1.

[0040] like Figure 1 , Figure 2 As shown, in a preferred embodiment of the present utility model, the blocking device includes a drain pipe 4 and a driving mechanism 5.

[0041] The drain pipe 4 is a flexible pipe, one end of which is connected to the drain port, and the other end is connected to the drive mechanism 5 (such as an electric push-pull rod). The end of the drain pipe 4 can be driven by the drive mechanism 5 and move between a first position and a second position. The height of the first position is higher than the height of the top of the water storage chamber, and the height of the second position is lower than the height of the drain port. When the end of the drain pipe 4 is located at the first position, the water storage chamber can be stored with water; when the end of the drain pipe 4 is located at the second position, the liquid in the water storage chamber can be discharged from the drain pipe 4 by gravity.

[0042] When the cleaning function is turned on, the driving mechanism 5 drives the end of the discharge pipe 4 below the volute 1 to rise, and the water storage chamber at the bottom of the volute 1 stores water, thereby increasing the contact area and contact time between the volute 1 and the impeller 11 and the water. Under the traction of the high-speed rotating airflow of the impeller 11 and its own gravity, the water at the bottom of the volute 1 will form a tidal surfing effect, flushing the impeller 11 and the inner wall of the bottom of the volute 1, thereby improving the cleaning effect.

[0043] In one embodiment of the present invention, Figure 2 , Figure 3 As shown, the driving mechanism 5 includes a driving motor 51 and a rope pulley 52. ​​The output shaft 511 of the driving motor 51 is connected to the middle of the rope pulley 52, so that the rope pulley 52 rotates synchronously with the output shaft 511 of the driving motor 51. A traction rope 53 (such as a steel wire rope) is wound around the rope pulley 52, and the end of the traction rope 53 is fixedly connected to the end of the drain pipe 4. The output shaft 511 of the driving motor 51 drives the rope pulley 52 to rotate, and the traction rope 53 and the end of the drain pipe 4 connected thereto are raised and lowered, so that the water storage chamber can store water and drain water. In this embodiment, the driving mechanism 5 can be installed at a position away from the oil smoke (such as the top of the air duct 3) through an inverted U-shaped fixing bracket 54, and there is no need to perform special sealing protection on the driving mechanism 5. Furthermore, the driving mechanism 5 can be installed at the top outside the air duct 3, and a small hole for the traction rope 53 to pass through is opened on the air duct 3 to achieve isolation from the oil smoke and water vapor.

[0044] Specifically, the automatic water storage cleaning mechanism is arranged inside the air duct 3, and the fixed bracket 54 is fixed to the top plate of the air duct 3 by screws. The driving motor 51 is arranged outside the fixed bracket 54, and the cross section of the output shaft 511 of the driving motor 51 is set to be D-shaped and is inserted into the two ends of the fixed bracket 54. The rope pulley 52 is arranged inside the fixed bracket 54 and is sleeved on the output shaft 511 of the driving motor 51 through the D-shaped hole to achieve synchronous rotation with the output shaft 511 of the driving motor 51. The first clip 55 is installed in the circular groove at the end of the output shaft 511 of the driving motor 51 located outside the fixed bracket 54, so as to complete the fixing of the rope pulley 52. ​​A traction rope guide groove 521 is arranged on the rope pulley 52, and the front end of the traction rope 53 is fixed in the traction rope guide groove 521, and the lower end of the traction rope 53 is fixed at the end of the discharge pipe 4. When the output shaft 511 of the driving motor 51 rotates in a circle, the traction rope 53 is wound around or released on the rope wheel 52, so that the traction rope 53 rises or falls and drives the end of the drainage pipe 4 to rise and fall. In this embodiment, water storage and drainage can be achieved only by driving the end of the drainage pipe 4 to rise and fall through the traction rope 53. The solution is simple and reliable, does not require additional sealing and other structures, and has low cost.

[0045] In order to guide the end of the drain pipe 4 during lifting and lowering and thus control the direction of drainage, in one embodiment of the utility model, the automatic water storage cleaning mechanism further includes a vertical water guide groove 6. The water guide groove 6 is tubular, and the cross section can be rectangular. A vertical guide groove 61 is provided on the side of the water guide groove 6. A connector 7 is provided at the end of the drain pipe 4, one end of the connector 7 is connected to the drain pipe 4, and the other end is provided with an annular protrusion 71. The connector 7 is located in the guide groove 61 and can slide up and down along the guide groove 61. The protrusion 71 is located in the water guide groove 6 and the outer diameter of the protrusion 71 is greater than the width of the guide groove 61, so as to prevent the connector 7 from being separated from the water guide groove 6. Through the annular protrusion 71, the connector 7 connected to the end of the drain pipe 4 can be confined in the guide groove 61, so that it can only slide up and down along the guide groove 61, and the oil and water discharged from the connector 7 flow into the oil cup of the range hood along the water guide groove 6, so as to prevent the sewage generated during the cleaning process from splashing.

[0046] In one embodiment of the utility model, a connecting ring 72 may be further provided on the connecting head 7, and a perforation is provided on the top of the connecting ring 72 for fixed connection with the traction rope 53. The connecting ring 72 is sleeved on the connecting head 7, and an annular boss 73 is provided on the left side of the connecting ring 72, and an annular groove and a second clamping spring 74 inside the annular groove are provided on the right side, so that the connecting ring 72 can be fixed on the connecting head 7, and the connecting ring 72 can rotate freely around the connecting head 7, so as to keep the lower end of the traction rope 53 from being entangled and always keep it in a vertical state.

[0047] In order to facilitate the insertion of the connector 7 into the water guide groove 6 , a circular mounting groove 62 is provided at the top of the guide groove 61 . The mounting groove 62 is connected to the guide groove 61 , and the inner diameter of the mounting groove 62 is greater than or equal to the outer diameter of the protrusion 71 .

[0048] In one embodiment of the utility model, the spray device 2 includes a spray head 21, a water spray pipe 22, a water pump 23 and a water tank 24 connected in sequence. The spray head 21 faces the impeller 11, and the spray head 21 is connected to one end of the water spray pipe 22, and the other end of the water spray pipe 22 is connected to the water outlet of the water pump 23, and the water inlet of the water pump 23 is connected to the water tank 24 through a pipeline. The water in the water tank 24 is pumped to the spray head 21 by the water pump 23, and the volute 1 and the impeller 11 can be sprayed and cleaned. In order to improve the cleaning effect, a heating device is provided in the water tank 24 or on the periphery of the water spray pipe 22, so that the spray head 21 sprays hot water on the volute 1 and the impeller 11 for cleaning.

[0049] The utility model also provides a range hood, comprising the above-mentioned automatic water storage and cleaning mechanism. The automatic water storage and cleaning mechanism is located in the air duct 3 of the range hood. Preferably, the driving mechanism 5 of the blocking device is located outside the air duct 3 to isolate it from oil smoke and water vapor, thereby eliminating the need for a sealing device and saving costs. In addition, the water pump 23 of the spray device 2 can be arranged at the top outside the air duct 3, the water tank 24 can be arranged at the bottom of the range hood, and only the nozzle 21 and part of the water spray pipe 22 are located in the air duct 3, which can also prevent the water pump 23 from contacting with oil smoke and water vapor, thereby extending the service life of the water pump 23.

[0050] After the automatic cleaning function of the range hood provided by the utility model is activated, the driving motor 51 of the driving mechanism 5 is started, and the output shaft 511 of the driving motor 51 drives the rope pulley 52 to make a circular motion, and the rope pulley 52 drives the traction rope 53 to move, and the traction rope 53 rises. When the height set by the program is reached, the driving motor 51 stops running. At the same time, the water pump 23 starts to work, and the water sprayed by the nozzle 21 directly flushes and cleans the rotating impeller 11 blades. The cleaned water will flow into the water storage chamber at the bottom of the volute 1. When all the water in the water tank 24 enters the water storage chamber of the volute 1, the water level in the water storage chamber reaches a predetermined height value, and the bottom of the impeller 11 is immersed in the water. Figure 4 As shown, the water level H1 in the volute 1 is lower than the height H2 at the end of the drain pipe 4. By using the U-shaped communicating vessel principle, the pressure and water level on both sides of the communicating vessel are the same. When the height H2 at the end of the drain pipe 4 is higher than the water level H1 in the water storage chamber, the water level in the drain pipe 4 is lower than the end of the drain pipe 4, so that the water storage chamber at the bottom of the volute 1 can store water, and then the impeller 11 can be immersed and rotated for cleaning. After the automatic cleaning function is completed, the driving motor 51 provides descending power to drive the traction rope 53 to descend, as shown in FIG. Figure 5As shown, the end of the drain pipe 4 is lowered to a set height position H2, which is lower than the drain port position H1 of the volute 1, so that the oil and water in the volute 1 can be discharged smoothly.

[0051] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic water storage cleaning mechanism, characterized in that: It comprises a volute (1) and a spray device (2); An impeller (11) is arranged in the volute (1), a water storage chamber is formed at the bottom of the volute (1), and the bottom of the impeller (11) is located in the water storage chamber; a liquid discharge port is arranged on the outer wall of the water storage chamber, and a sealing device is arranged at the liquid discharge port.

2. The automatic water storage cleaning mechanism according to claim 1, characterized in that: The blocking device comprises a liquid discharge pipe (4) and a driving mechanism (5); One end of the drainage pipe (4) is connected to the drainage port, and the other end is connected to the driving mechanism (5); the end of the drainage pipe (4) can be driven by the driving mechanism (5) and move between a first position and a second position; the height of the first position is higher than the top of the water storage chamber, and the height of the second position is lower than the drainage port.

3. The automatic water storage cleaning mechanism according to claim 2, characterized in that: The driving mechanism (5) comprises a driving motor (51) and a rope pulley (52); an output shaft (511) of the driving motor (51) is connected to the middle of the rope pulley (52); a traction rope (53) is wound around the rope pulley (52); and an end of the traction rope (53) is fixedly connected to an end of the liquid discharge pipe (4).

4. The automatic water storage cleaning mechanism according to claim 3, characterized in that: It also comprises a vertical water guide groove (6); a vertical guide groove (61) is provided on the side of the water guide groove (6); a connector (7) is provided at the end of the drainage pipe (4); one end of the connector (7) is connected to the drainage pipe (4), and the other end is provided with an annular protrusion (71); the protrusion (71) is located in the water guide groove (6), and the outer diameter of the protrusion (71) is greater than the width of the guide groove (61).

5. The automatic water storage cleaning mechanism according to claim 4, characterized in that: A circular mounting groove (62) is provided at the top of the guide groove (61); the mounting groove (62) is connected to the guide groove (61), and the inner diameter of the mounting groove (62) is greater than or equal to the outer diameter of the protruding portion (71).

6. The automatic water storage cleaning mechanism according to claim 4, characterized in that: The connecting head (7) is provided with a connecting ring (72) that can rotate around the connecting head (7), the top of the connecting ring (72) has a through hole, and the end of the traction rope (53) is fixedly connected to the through hole.

7. The automatic water storage cleaning mechanism according to claim 1, characterized in that: The impeller (11) is connected to a control device so that the impeller (11) can rotate forward and reverse.

8. The automatic water storage cleaning mechanism according to claim 1, characterized in that: The spray device (2) comprises a spray head (21), a water spray pipe (22), a water pump (23) and a water tank (24) which are connected in sequence; the spray head (21) faces the impeller (11), the spray head (21) is connected to one end of the water spray pipe (22), the other end of the water spray pipe (22) is connected to the water outlet of the water pump (23), and the water inlet of the water pump (23) is connected to the water tank (24).

9. A range hood, characterized in that: It comprises an automatic water storage cleaning mechanism according to any one of claims 1 to 8.

10. The range hood according to claim 9, characterized in that: The automatic water storage and cleaning mechanism is located in the air duct (3) of the range hood, and the driving mechanism (5) of the blocking device is located at the top of the air duct (3).

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