Range hood and control method and control device thereof

Abstract

The invention relates to the technical field of range hoods, and discloses a range hood and a control method and device thereof. The air conditioner assembly is arranged in the machine shell and comprises a compressor, a condenser and an evaporator. The water tank is detachably connected with the machine shell and used for receiving condensate water dripping from the evaporator. And the water absorption piece is arranged above the water tank. The water absorption piece is arranged above the water tank, the water absorption piece can prevent the water tank from being quickly filled up and the overflow risk caused by the operation of a refrigeration mode, the water absorption piece can firstly absorb condensate water dripping from the evaporator, and after the water absorption piece is filled up with water, the condensate water drips into the water tank under the action of gravity, so that the water absorption piece is convenient to use. The water absorption piece can collect condensate water, relieve the pressure of the condensate water stored in the water tank and prevent the condensate water from overflowing.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood and a control method and a control device thereof. Background Art

[0002] Refrigeration type range hood adds a refrigeration component to the range hood, which can realize all the functions of the range hood and the refrigeration function of air conditioning.

[0003] The related art discloses a refrigeration-type range hood, which can independently start the dehumidification function. A water receiving box is installed under the evaporator, which can receive the condensed water falling from the surface of the evaporator. The condensed water in the water receiving box can flow into a detachable water tank, and the user can regularly remove the water tank to pour out the condensed water stored therein. However, when the amount of condensed water generated is greater than the storage capacity of the water tank, the water tank will overflow due to excessive condensed water flowing into it, and the overflow of condensed water will cause a short circuit inside the casing, and the condensed water will flow into the oil cup from the oil path inside the casing, and then overflow from the oil cup and spill on the surface of the stove, affecting the user's experience. Summary of the invention

[0004] In view of this, the present invention provides a range hood and a control method and a control device thereof, so as to solve the problem that condensed water is easily overflowed from a water tank of the range hood in the related art.

[0005] In a first aspect, the present invention provides a range hood, comprising:

[0006] chassis;

[0007] An air conditioning assembly is disposed in the housing, the air conditioning assembly comprising a compressor, a condenser and an evaporator;

[0008] a water tank, detachably connected to the housing, for receiving condensed water dripping from the evaporator;

[0009] The water absorbing member is arranged above the water tank.

[0010] Beneficial effect: When the air conditioning component is working, the evaporator can exchange heat with the air and cool the air, thereby blowing cold air to the user. Therefore, the range hood can blow cold air to the user when the user is cooking, thereby improving the user's cooking experience. Condensation water will be generated on the surface of the evaporator, and the water tank can receive the condensation water dripping from the evaporator. By setting a water absorbent above the water tank, the water absorbent can prevent the water tank from being filled up quickly while the cooling mode is still running, resulting in the risk of overflow. The water absorbent can first absorb the condensation water dripping from the evaporator. When the water absorbent is full of water, the condensation water will drip into the water tank under the action of gravity. The setting of the water absorbent can collect the condensation water, relieve the pressure of the condensation water stored in the water tank, and prevent the condensation water from overflowing.

[0011] In an optional embodiment, the water absorbing member is detachably connected to the water tank.

[0012] Beneficial effect: Since the water absorbent is detachably connected to the water tank, after the water tank is removed from the casing, the water absorbent can be removed from the water tank, the condensed water in the water tank can be poured out, the condensed water accumulated inside the water absorbent can be manually wrung out, and then installed on the water tank after wrung out. After the installation is completed, the water tank can be reinstalled into the casing.

[0013] In an optional embodiment, a liquid level sensor is provided in the water tank, and the range hood further comprises a controller and a prompt module. The controller is communicatively connected with the liquid level sensor and the prompt module, and can control the prompt module to send a prompt message when the water level in the water tank is higher than the warning liquid level height.

[0014] Beneficial effect: By setting a liquid level sensor in the water tank, the water level in the water tank can be monitored in real time. When the water level in the water tank is higher than the warning liquid level, the control prompt module sends a prompt message to prompt the user to dump the condensed water, thereby preventing the condensed water from overflowing.

[0015] In an optional embodiment, a push-pull mechanism is further provided in the housing, the push-pull mechanism is suitable for squeezing the water absorbing member, and the controller is communicatively connected with the push-pull mechanism.

[0016] Beneficial effect: By providing a push-pull mechanism, the push-pull mechanism squeezes the water absorbent, so that the condensed water stored in the water absorbent can be squeezed out and fall into the water tank, so that the water absorbent can restore or maintain its water absorption performance.

[0017] In an optional embodiment, the controller is also used to control the push-pull mechanism to stop operating and control the refrigeration mode to stop running when the water level in the water tank is greater than or equal to the limit liquid level height.

[0018] Beneficial effect: If the water level in the water tank is greater than or equal to the limit liquid level height, if the refrigeration mode and the push-pull mechanism continue to operate, condensed water will overflow. Therefore, the controller controls the push-pull mechanism to stop operating and controls the refrigeration mode to stop running, which can avoid condensed water overflow.

[0019] In an optional embodiment, a water receiving box is provided below the evaporator, and the water receiving box is connected to the water tank through a flow channel.

[0020] Beneficial effect: By arranging a water receiving box below the evaporator, the water receiving box can receive the condensed water falling from the evaporator, the water receiving box is connected with the water tank through the flow channel, and the condensed water in the water receiving box can flow into the water tank along the flow channel. The arrangement of the water receiving box and the flow channel can make the water tank located at the bottom of the casing, which is more conducive to the removal of the water tank.

[0021] In an optional embodiment, the housing is provided with a cold air outlet, the air outlet of the evaporator is connected to the cold air outlet, and the housing is further provided with:

[0022] An oil fume suction fan, the air outlet of the condenser is connected to the oil fume suction fan;

[0023] A smoke exhaust passage, connected to the air outlet of the range fumes exhaust fan, and an opening is provided on one side of the smoke exhaust passage;

[0024] The purification device has an air inlet side and an air outlet side, wherein the air inlet side is connected to the smoke exhaust channel through the opening, and the air outlet side is respectively connected to the air inlet of the condenser and the air inlet of the evaporator.

[0025] Beneficial effects: By setting a purification device, the air inlet side of the purification device is connected to the smoke exhaust channel through an opening, and the air outlet side of the purification device is connected to the air inlet of the condenser and the air inlet of the evaporator. When the oil fume extractor fan is working, the air containing oil fume sucked flows into the smoke exhaust channel, part of the air is discharged through the smoke exhaust channel, and part of the air flows to the purification device after passing through the opening, and flows to the condenser and evaporator after purification by the purification device. The air after heat exchange in the evaporator is blown out from the cold air outlet and blown to the user, making the user feel cool. The air after heat exchange in the condenser flows back to the oil fume extractor fan. The range hood can purify the air containing oil fume sucked and supply it to the evaporator and condenser, and the casing does not need to be additionally provided with air inlets for the evaporator and condenser.

[0026] In an optional embodiment, a guide plate is provided at the opening, a first end of the guide plate is arranged on a side wall of the smoke exhaust channel, and a second end of the guide plate extends to the central axis of the smoke exhaust channel.

[0027] Beneficial effect: By providing a guide plate, the air entering the smoke exhaust channel can be directed to the purification device.

[0028] In an optional embodiment, the first end of the guide plate is hinged to the side wall of the smoke exhaust channel, and the ratio of the air exhausted through the smoke exhaust channel and the air entering the purification device is adjusted by rotating the guide plate.

[0029] Beneficial effect: Since the first end of the guide plate is hinged to the side wall of the smoke exhaust channel, the position of the guide plate can be adjusted by rotating the guide plate, thereby adjusting the ratio of air exhausted through the smoke exhaust channel and air entering the purification device.

[0030] In an optional embodiment, a switch valve is further provided at the opening, and the switch valve has an open state that connects the smoke exhaust channel with the air inlet side, and a closed state that disconnects the smoke exhaust channel from the air inlet side.

[0031] Beneficial effect: By setting the switch valve, when the user does not need to use the air conditioning function and only needs the fume extraction function, the switch valve is switched to the closed state. At this time, the smoke exhaust channel is disconnected from the air inlet side, and all the air sucked in by the fume extraction fan is discharged through the smoke exhaust channel, which can meet the different needs of users.

[0032] In an optional embodiment, the evaporator and the condenser are separated by a baffle, and the baffle is rotatable.

[0033] Beneficial effects: The evaporator and condenser are separated by a baffle, which can be rotated. The air volume ratio entering the evaporator and condenser can be adjusted by adjusting the position of the baffle. When the user wants to use the dehumidification function, the air outlet side of the purification device can be separated from the evaporator by rotating the baffle, so that all the air purified by the purification device flows to the condenser to achieve the dehumidification function.

[0034] In an optional embodiment, the purification device includes an oil fume filtering device.

[0035] Beneficial effect: The purification device includes an oil fume filtering device, which can filter the oil fume to prevent the oil fume from entering the evaporator and the condenser and causing pollution to the evaporator and the condenser.

[0036] In a second aspect, the present invention further provides a control method for a range hood, which is applied to the range hood, and the control method comprises:

[0037] Get the water level H in the water tank;

[0038] The push-pull mechanism, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank.

[0039] Beneficial effect: By obtaining the water level H in the water tank, the push-pull mechanism, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank, so as to avoid overflow of condensed water in the water tank.

[0040] In an optional embodiment, the controlling the push-pull mechanism, the cooling mode and whether the prompt module is running according to the water level H in the water tank includes:

[0041] Determine whether the water level H in the water tank is greater than the warning liquid level height H1 and less than the limit liquid level height H2 and whether the cooling mode is ended;

[0042] If H1<H<H2 and the cooling mode ends, the push-pull mechanism is controlled to stop working and the prompt module is controlled to issue a prompt message;

[0043] If H1<H<H2 and the cooling mode has not ended, the push-pull mechanism is controlled to work;

[0044] If H≥H2, the push-pull mechanism is controlled to stop operating, the cooling mode stops running, and the prompt module sends a prompt message.

[0045] Beneficial effect: If the cooling mode ends, the height of the condensed water in the water tank does not exceed the maximum liquid level due to the inflow of condensed water generated by squeezing the water absorbent, that is, H1<H<H2, which means that the storage of condensed water in the water tank is alleviated under the absorption of the water absorbent. At this time, if the push-pull mechanism continues to operate, the amount of condensed water in the water tank may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism is controlled to stop operating and the prompt module is controlled to send a prompt message to remind the user to dump the condensed water in the water tank.

[0046] When the water level H in the water tank is greater than H1 and the cooling mode ends, a prompt message is issued to remind the user to dump the condensed water. There is no need to remind the user to dump the condensed water every time the cooling mode ends. If H1<H<H2 and the cooling mode continues to run, the push-pull mechanism is controlled to work, the water absorbent is squeezed back and forth, and the water level in the water tank is monitored at the same time. The push-pull mechanism squeezes the water absorbent to squeeze out the water in the water absorbent. The water absorbent can continue to absorb water to relieve the pressure of the condensed water stored in the water tank. At this time, the condensed water generated during the operation of the cooling mode can be continued to be absorbed by the water absorbent that releases the condensed water. If the water level H in the water tank is greater than or equal to the limit liquid level height H2, at this time, if the cooling mode continues to run or the push-pull mechanism continues to work, the amount of condensed water in the water tank will exceed its own storage space and cause overflow. Therefore, the push-pull mechanism is controlled to stop working, the cooling mode stops running, and the prompt module sends a prompt message to remind the user to dump the condensed water in the water tank. After handling the water absorbent and dumping the condensed water in the water tank, the water tank is installed in place. After installation, the cooling mode is controlled to continue to run.

[0047] In an optional embodiment, after the push-pull mechanism is controlled to stop working, the cooling mode is stopped, and the prompt module sends a prompt message, the control of the push-pull mechanism, the cooling mode, and whether the prompt module is running according to the water level in the water tank further includes:

[0048] Determine whether the user has removed the water tank and installed it in place;

[0049] If yes, control the cooling mode to resume operation.

[0050] Beneficial effect: If the water level H in the water tank is greater than or equal to the limit liquid level height H2, if the cooling mode continues to operate or the push-pull mechanism continues to work, the amount of condensed water in the water tank will exceed its own storage space and cause overflow. Therefore, the push-pull mechanism is controlled to stop working, the cooling mode stops running, and the prompt module sends a prompt message to remind the user to pour out the condensed water in the water tank. After the user handles the water absorbent and pours out the condensed water in the water tank, the water tank is installed in place, and the cooling mode is controlled to continue to operate after it is installed in place. In order to prevent the user from forgetting to pour out the condensed water in the water tank, it is judged whether the user has removed and installed the water tank in place. Only when the water tank is removed and installed in place again, the cooling mode is controlled to resume operation to prevent the condensed water from overflowing due to the user forgetting to pour out the condensed water.

[0051] In an optional embodiment, the controlling the push-pull mechanism, the cooling mode and whether the prompt module is running according to the water level in the water tank further includes:

[0052] Determine whether the water level H in the water tank is less than the warning liquid level H1 and whether the cooling mode is ended;

[0053] If H

[0054] If H

[0055] Beneficial effect: If the water level H in the water tank is less than the warning liquid level height and the cooling mode has not ended, the push-pull mechanism is controlled to work, and the water absorbing member is squeezed back and forth, while the water level in the water tank is monitored. The push-pull mechanism squeezes the water absorbing member to squeeze out the water in the water absorbing member, and the water absorbing member can continue to absorb water to relieve the pressure of condensed water stored in the water tank. At this time, the condensed water generated during the cooling mode operation can continue to be absorbed by the water absorbing member that releases the condensed water. If the water level H in the water tank is less than the warning liquid level height H1 and the cooling mode is ended, the push-pull mechanism is controlled to stop working to prevent the water level in the water tank from continuing to increase.

[0056] In an optional embodiment, the controlling the push-pull mechanism, the cooling mode and whether the prompt module is running according to the water level H in the water tank further includes:

[0057] Determine whether the water level H in the water tank is less than the initial value H0, where H0

[0058] If H<H0, the cooling mode can be turned on normally next time;

[0059] If H≥H0, the push-pull mechanism is controlled to work.

[0060] ​​​Beneficial effect: During the operation of the cooling mode, the water level H in the water tank is monitored in real time. If the water level in the water tank does not exceed the initial value H0, it means that the condensed water collected in the water tank does not exceed the warning liquid level due to the water absorption of the water absorbent. At this time, there is no need to remind the user to dump the condensed water, and the cooling mode can be started normally next time. If the user has to dump the condensed water after each cooling mode operation, it will cause a poor user experience.

[0061] In an optional embodiment, the controlling the push-pull mechanism, the cooling mode and whether the prompt module is running according to the water level H in the water tank further includes:

[0062] If H1<H<H2 and the cooling mode ends, the push-pull mechanism is controlled to work when the cooling mode is turned on next time.

[0063] Beneficial effect: If H1<H<H2 and the cooling mode ends, it means that the storage of condensed water in the water tank is alleviated due to the absorption of the water absorbent. At this time, if the push-pull mechanism continues to operate, the amount of condensed water in the water tank may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism is controlled to stop operating and the prompt module is controlled to issue a prompt message to remind the user to dump the condensed water in the water tank. If the user forgets to dump the condensed water, the next time the cooling mode is running, the squeezing mechanism above the water absorbing member will be controlled to squeeze the water absorbing member back and forth, so as to squeeze out the condensed water in the water absorbing member and release space for water absorption. During the continuous operation of the cooling mode, when the liquid level in the monitored water tank has not reached the limit liquid level H2, it means that the water absorbing member that has released the water absorption space has alleviated the space for storing water in the water tank by absorbing water. After the cooling mode ends, the user is reminded to dump the condensed water. If the user still forgets to dump the condensed water, when the next cooling mode is running, the liquid level in the water tank exceeds H2, the cooling mode is controlled to stop running. The cooling mode can only be operated after the user disassembles the water tank to dump the condensed water and installs it in place. The technical effect of not causing condensed water overflow even if the user forgets to dump the condensed water is further achieved.

[0064] In a third aspect, the present invention further provides a control device for a range hood, which is applied to the range hood, and the control device comprises:

[0065] An acquisition module is used to obtain the water level H in the water tank;

[0066] The control module is used to control the push-pull mechanism, the cooling mode and whether the prompt module is running according to the water level H in the water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0068] Figure 1 is a schematic diagram of a range hood according to an embodiment of the present invention;

[0069] Figure 2 is a schematic diagram of an air conditioning component;

[0070] Figure 3 The process of a control method of a range hood according to an embodiment of the present invention is as follows Figure 1 ;

[0071] Figure 4 The process of a control method of a range hood according to an embodiment of the present invention is as follows Figure 2 .

[0072] Description of reference numerals:

[0073] 1. Casing; 2. Compressor; 3. Oil fume exhaust fan; 4. Water tank; 5. Condenser; 6. Evaporator; 7. Purification device; 8. Oil fume filtering device; 9. Water collection box; 10. Guide plate; 11. Switch valve; 12. Baffle; 13. Smoke exhaust channel; 14. Air inlet side; 15. Air outlet side; 16. Cold air outlet; 17. Water absorption part; 18. Push-pull mechanism; 19. Refrigerant pipeline. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0075] Refrigeration type range hood adds a refrigeration component to the range hood, which can realize all the functions of the range hood and the refrigeration function of air conditioning.

[0076] The related art discloses a refrigeration-type range hood, which can independently start the dehumidification function. A water receiving box is installed under the evaporator, which can receive the condensed water falling from the surface of the evaporator. The condensed water in the water receiving box can flow into a detachable water tank, and the user can regularly remove the water tank to pour out the condensed water stored therein. However, when the amount of condensed water generated is greater than the storage capacity of the water tank, the water tank will overflow due to excessive condensed water flowing into it, and the overflow of condensed water will cause a short circuit inside the casing, and the condensed water will flow into the oil cup from the oil path inside the casing, and then overflow from the oil cup and spill on the surface of the stove, affecting the user's experience.

[0077] In the case of a refrigeration-type range hood in the related art, when there is a family gathering or when a lot of dishes need to be cooked, as the startup time increases and the refrigeration function is prolonged, the amount of condensed water will increase compared to normal situations. If the storage capacity of the water tank is not enough to handle it, it will inevitably cause the condensed water to overflow. However, due to the limitation of the shell volume, the volume of the water tank cannot be increased indefinitely. In addition, in the related art, users need to dump the condensed water regularly, but there is no reminder mechanism for users to dump the condensed water. Dumping the condensed water depends entirely on the user's consciousness. When the user fails to dump the condensed water in time, as the refrigeration function is running cumulatively, the condensed water will accumulate in the water tank, which will inevitably cause the condensed water in the water tank to overflow.

[0078] Combine the following Figures 1 to 4 , describing an embodiment of the present invention.

[0079] According to an embodiment of the present invention, on one hand, a range hood is provided, including a housing 1 , an air conditioning assembly, a water tank 4 and a water absorption member 17 .

[0080] The air conditioning assembly is arranged in the casing 1, and the air conditioning assembly includes a compressor 2, a condenser 5 and an evaporator 6; the water tank 4 is detachably connected to the casing 1 and is used to receive condensed water dripping from the evaporator 6; the water absorbent 17 is arranged above the water tank 4.

[0081] In this embodiment, when the air conditioning assembly is working, the evaporator 6 can exchange heat with the air and cool the air, thereby blowing cold air to the user. Therefore, the range hood can blow cold air to the user when the user is cooking, thereby improving the user's cooking experience. Condensed water will be generated on the surface of the evaporator 6, and the water tank 4 can receive the condensed water dripping from the evaporator 6. By arranging a water absorbing member 17 above the water tank 4, the water absorbing member 17 can prevent the water tank 4 from being filled up quickly while the cooling mode is still running, resulting in the risk of overflow. The water absorbing member 17 can first absorb the condensed water dripping from the evaporator 6. When the water absorbing member 17 is full of water, the condensed water will drip into the water tank 4 under the action of gravity. The setting of the water absorbing member 17 can collect the condensed water, relieve the pressure of the condensed water stored in the water tank 4, and avoid the overflow of the condensed water.

[0082] Specifically in one embodiment, Figure 2As shown, the compressor 2 , the condenser 5 and the evaporator 6 are connected via a refrigerant pipeline 19 .

[0083] Specifically in one embodiment, Figure 1 As shown, the condenser 5 and the evaporator 6 are both arranged at an angle and symmetrically relative to the water receiving box 9 .

[0084] Specifically in one embodiment, the water absorbent 17 can be any structure with water absorbency, such as a sponge or absorbent paper.

[0085] Specifically in one embodiment, a plurality of water absorbing members 17 may be provided.

[0086] In one embodiment, the water absorbing member 17 is detachably connected to the water tank 4 .

[0087] In this embodiment, since the water absorbent member 17 is detachably connected to the water tank 4, after the water tank 4 is removed from the casing 1, the water absorbent member 17 can be removed from the water tank 4, the condensed water in the water tank 4 can be poured out, the condensed water accumulated inside the water absorbent member 17 can be manually wrung out, and then installed on the water tank 4 after wrung out. After the installation is completed, the water tank 4 can be reinstalled into the casing 1.

[0088] Specifically in one embodiment, a groove is provided on the top of the water tank 4, and the water absorbing member 17 is installed in the groove.

[0089] Specifically in one embodiment, a groove is provided on the top of the water tank 4, a plurality of through holes are provided at the bottom of the groove, and the water absorbing member 17 is installed in the groove.

[0090] Specifically in one embodiment, a plurality of grooves are provided on the top of the water tank 4, and one or more water absorbing members 17 are installed in each groove.

[0091] In one embodiment, a liquid level sensor is provided in the water tank 4, and the range hood further includes a controller and a prompt module. The controller, the liquid level sensor and the prompt module are communicatively connected, and can control the prompt module to send a prompt message when the water level in the water tank 4 is higher than the warning liquid level height.

[0092] In this embodiment, by setting a liquid level sensor in the water tank 4, the water level in the water tank 4 can be monitored in real time. When the water level in the water tank 4 is higher than the warning liquid level height, the control prompt module sends a prompt message to prompt the user to pour out the condensed water, thereby preventing the condensed water from overflowing.

[0093] Specifically in one embodiment, the prompt module can send out a voice signal and / or a light signal to prompt the user to remove the water tank 4 from the housing 1 and pour out the condensed water.

[0094] In one embodiment, a push-pull mechanism 18 is further provided in the housing 1 , and the push-pull mechanism 18 is suitable for squeezing the water absorbing member 17 , and the controller is communicatively connected with the push-pull mechanism 18 .

[0095] In this embodiment, by providing a push-pull mechanism 18, the push-pull mechanism 18 squeezes the water absorbing member 17, so that the condensed water stored in the water absorbing member 17 can be squeezed out and dropped into the water tank 4, so that the water absorbing member 17 can restore or maintain its water absorption performance.

[0096] Specifically in one embodiment, the push-pull mechanism 18 may include a driving mechanism and a roller. The driving mechanism may drive the roller to roll along the upper surface of the water absorbing member 17 to squeeze the water absorbing member 17 and squeeze out the condensed water in the water absorbing member 17 .

[0097] In one embodiment, the controller is also used to control the push-pull mechanism 18 to stop working and control the refrigeration mode to stop running when the water level in the water tank 4 is greater than or equal to the limit liquid level height, and H2 is greater than H1.

[0098] In this embodiment, if the water level in the water tank 4 is greater than or equal to the limit liquid level height, if the refrigeration mode and the push-pull mechanism 18 continue to operate, condensed water will overflow. Therefore, the controller controls the push-pull mechanism 18 to stop operating and controls the refrigeration mode to stop running, which can avoid condensed water overflow.

[0099] In one embodiment, a water receiving box 9 is provided below the evaporator 6 , and the water receiving box 9 is connected to the water tank 4 through a flow channel.

[0100] In this embodiment, a water receiving box 9 is provided below the evaporator 6, so that the water receiving box 9 can receive the condensed water falling from the evaporator 6, and the water receiving box 9 is connected with the water tank 4 through a flow channel, and the condensed water in the water receiving box 9 can flow into the water tank 4 along the flow channel. The provision of the water receiving box 9 and the flow channel can make the water tank 4 be located at the bottom of the housing 1, which is more conducive to the removal of the water tank 4.

[0101] Specific as Figure 1 As shown, the water receiving box 9 is horizontally arranged between the evaporator 6 and the condenser 5 .

[0102] In one embodiment, the housing 1 is provided with a cold air outlet, the air outlet of the evaporator 6 is connected to the cold air outlet 16, and the housing 1 is further provided with a range fumes fan 3, a smoke exhaust passage 13 and a purification device 7. Among them, the air outlet of the condenser 5 is connected to the range fumes fan 3; the smoke exhaust passage 13 is connected to the air outlet of the range fumes fan 3, and an opening is provided on one side of the smoke exhaust passage 13; the purification device 7 has an air inlet side 14 and an air outlet side 15, the air inlet side 14 is connected to the smoke exhaust passage 13 through the opening, and the air outlet side 15 is connected to the air inlet of the condenser 5 and the air inlet of the evaporator 6 respectively.

[0103] In this embodiment, by providing the purification device 7, the air inlet side 14 of the purification device 7 is connected to the smoke exhaust channel 13 through the opening, and the air outlet side 15 of the purification device 7 is connected to the air inlet of the condenser 5 and the air inlet of the evaporator 6. When the oil fume extractor fan 3 is working, the air containing oil fume sucked flows into the smoke exhaust channel 13, part of the air is discharged through the smoke exhaust channel 13, and part of the air flows to the purification device 7 after passing through the opening, and flows to the condenser 5 and the evaporator 6 after being purified by the purification device 7. The air after heat exchange in the evaporator 6 is blown out from the cold air outlet 16 and blown to the user, so that the user feels cool, and the air after heat exchange in the condenser 5 flows back to the oil fume extractor fan 3. The range hood can purify the air containing oil fume sucked and supply it to the evaporator 6 and the condenser 5, and the housing 1 does not need to be additionally provided with air inlets for the evaporator 6 and the condenser 5.

[0104] Specifically in one embodiment, an air valve is provided between the air outlet of the condenser 5 and the range fumes exhaust fan 3 , and whether the condenser 5 is connected to the range fumes exhaust fan 3 can be controlled by controlling the air valve.

[0105] In one embodiment, a guide plate 10 is disposed at the opening, a first end of the guide plate 10 is disposed on a side wall of the smoke exhaust passage 13 , and a second end of the guide plate 10 extends to the central axis of the smoke exhaust passage 13 .

[0106] In this embodiment, the air entering the smoke exhaust channel 13 can be directed to the purification device 7 by providing the guide plate 10 .

[0107] Specifically in one embodiment, the surface of the guide plate 10 is a curved surface, which can better guide the air.

[0108] In one embodiment, the first end of the guide plate 10 is hinged to the side wall of the smoke exhaust channel 13 , and the ratio of the air exhausted through the smoke exhaust channel 13 and the air entering the purification device 7 is adjusted by rotating the guide plate 10 .

[0109] In this embodiment, since the first end of the guide plate 10 is hinged to the side wall of the smoke exhaust channel 13, the position of the guide plate 10 can be adjusted by rotating the guide plate 10, thereby adjusting the ratio of the air exhausted through the smoke exhaust channel 13 and the air entering the purification device 7.

[0110] In one embodiment, a switch valve 11 is further provided at the opening, and the switch valve 11 has an open state that connects the smoke exhaust passage 13 with the air inlet side 14 , and a closed state that disconnects the smoke exhaust passage 13 from the air inlet side 14 .

[0111] In this embodiment, by setting the switch valve 11, when the user does not need to use the air conditioning function but only needs the fume extraction function, the switch valve 11 is switched to a closed state. At this time, the smoke exhaust channel 13 is disconnected from the air inlet side 14, and the air sucked in by the fume extraction fan 3 is all discharged through the smoke exhaust channel 13, which can meet the different needs of users.

[0112] In one embodiment, the evaporator 6 and the condenser 5 are separated by a baffle 12, and the baffle 12 is rotatable.

[0113] In this embodiment, the evaporator 6 and the condenser 5 are separated by a baffle 12, and the baffle 12 is rotatable. The ratio of the air volume entering the evaporator 6 and the condenser 5 can be adjusted by adjusting the position of the baffle 12. When the user wants to use the dehumidification function, the air outlet side 15 of the purification device 7 can be separated from the evaporator 6 by rotating the baffle 12, so that all the air purified by the purification device 7 flows to the condenser 5, thereby realizing the dehumidification function.

[0114] Specifically in one embodiment, Figure 1 As shown, a first end of the baffle 12 is hinged to the water receiving box 9 , and a second end is close to the purification device 7 .

[0115] In one embodiment, the purification device 7 includes an oil fume filtering device 8 .

[0116] In this embodiment, the purification device 7 includes an oil fume filtering device 8, which can filter the oil fume to prevent the oil fume from entering the evaporator 6 and the condenser 5 and causing pollution to the evaporator 6 and the condenser 5.

[0117] Specifically in one embodiment, the oil fume filter device 8 can absorb oil stains. The oil fume filter device 8 is provided with a heating device. The heating device can heat-melt the oil stains absorbed by the oil fume filter device 8. The melted oil stains can flow into the oil cup. The oil fume filter device 8 can also be sprayed and cleaned with hot condensed water.

[0118] According to an embodiment of the present invention, on the other hand, a control method for a range hood is also provided, which is applied to the range hood provided in the above embodiment, and the control method includes:

[0119] Obtain the water level H in the water tank 4;

[0120] The push-pull mechanism 18, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank 4.

[0121] In this embodiment, by obtaining the water level H in the water tank 4 and controlling the push-pull mechanism 18, the cooling mode and whether the prompt module is running according to the water level H in the water tank 4, overflow of condensed water in the water tank 4 can be avoided.

[0122] Specifically, when the water level H in the water tank 4 is low, the push-pull mechanism 18 can be controlled to release the condensed water in the water absorbing member 17, so that the water absorbing member 17 continues to absorb water, thereby alleviating the condensed water storage pressure in the water tank 4. When the water level H in the water tank 4 is high, the cooling mode can be controlled to stop working and the prompt module can be controlled to send a prompt message to prevent the cooling mode from continuing to work and causing the condensed water in the water tank 4 to overflow, and to prompt the user to pour out the condensed water in the water tank 4.

[0123] In one embodiment, the push-pull mechanism 18, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank 4, including:

[0124] Determine whether the water level H in the water tank 4 is greater than the warning liquid level height H1 and less than the limit liquid level height H2 and whether the cooling mode is ended;

[0125] If H1<H<H2 and the cooling mode ends, the push-pull mechanism 18 is controlled to stop working and the prompt module is controlled to issue a prompt message;

[0126] If H1<H<H2 and the cooling mode has not ended, the push-pull mechanism 18 is controlled to work;

[0127] If H≥H2, the push-pull mechanism 18 is controlled to stop working, the cooling mode stops running, and the prompt module sends a prompt message.

[0128] In this embodiment, if the refrigeration mode ends, the height of the condensed water in the water tank 4 does not exceed the maximum liquid level height due to the inflow of condensed water generated by squeezing the water absorbing member 17, that is, H1<H<H2, indicating that the storage of condensed water in the water tank 4 is alleviated under the absorption of the water absorbing member 17. At this time, if the push-pull mechanism 18 continues to operate, the amount of condensed water in the water tank 4 may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop operating and the prompt module is controlled to issue a prompt message to remind the user to pour out the condensed water in the water tank 4.

[0129] In this embodiment, a prompt message is issued to prompt the user to dump the condensed water only when the water level H in the water tank 4 is greater than H1 and the cooling mode ends. It is not necessary to prompt the user to dump the condensed water every time the cooling mode ends. If H1<H<H2 and the cooling mode continues to operate, the push-pull mechanism 18 is controlled to work, and the water absorbing member 17 is squeezed back and forth, while the water level in the water tank 4 is monitored. The push-pull mechanism 18 squeezes the water absorbing member 17 to squeeze out the water in the water absorbing member 17. The water absorbing member 17 can continue to absorb water to relieve the pressure of the condensed water stored in the water tank 4. At this time, the condensed water generated during the operation of the cooling mode can continue to be absorbed by the water absorbing member 17 that releases the condensed water. If the water level H in the water tank 4 is greater than or equal to the maximum liquid level height H2, if the refrigeration mode continues to run or the push-pull mechanism 18 continues to work, the amount of condensed water in the water tank 4 will exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop working, the refrigeration mode stops running, and the prompt module sends a prompt message to remind the user to pour out the condensed water in the water tank 4. After handling the water absorbing part 17 and pouring out the condensed water in the water tank 4, the water tank 4 is installed in place, and the refrigeration mode is controlled to continue running after installation.

[0130] It should be noted that if the user needs to pour out the condensed water after each cooling mode operation, it will lead to a poor user experience.

[0131] It should be noted that after receiving the prompt information sent by the prompt module, the user can disassemble the water tank 4 and pour out the condensed water. At the same time, remove the water absorbent part 17 above the water tank 4, manually wring out the condensed water accumulated inside the water absorbent part 17, and then install the water absorbent part 17 on the water tank 4 after wringing it out. After the installation is completed, install the water tank 4 with the water absorbent part 17 installed on the casing 1.

[0132] In one embodiment, after the push-pull mechanism 18 is controlled to stop working, the cooling mode is stopped, and the prompt module sends a prompt message, the push-pull mechanism 18, the cooling mode, and whether the prompt module is running are controlled according to the water level in the water tank 4, and the following is further included:

[0133] Determine whether the user has removed and installed the water tank 4 in place;

[0134] If yes, control the cooling mode to resume operation.

[0135] In this embodiment, if the water level H in the water tank 4 is greater than or equal to the limit liquid level height H2, if the refrigeration mode continues to operate or the push-pull mechanism 18 continues to work, the amount of condensed water in the water tank 4 will exceed its own storage space and cause overflow, so the push-pull mechanism 18 is controlled to stop working, the refrigeration mode stops running, and the prompt module sends a prompt message to remind the user to pour out the condensed water in the water tank 4. After the user handles the water absorbing member 17 and pours out the condensed water in the water tank 4, the water tank 4 is installed in place, and the refrigeration mode is controlled to continue to operate after it is installed in place. In order to prevent the user from forgetting to pour out the condensed water in the water tank 4, it is determined whether the user has disassembled and installed the water tank 4 in place. Only when the water tank 4 is disassembled and installed in place again, the refrigeration mode is controlled to resume operation to prevent the condensed water from overflowing due to the user forgetting to pour out the condensed water.

[0136] In one embodiment, the push-pull mechanism 18, the cooling mode and whether the prompt module is running are controlled according to the water level in the water tank 4, and further includes:

[0137] Determine whether the water level H in the water tank 4 is less than the warning liquid level H1 and whether the cooling mode is ended;

[0138] If H

[0139] If H

[0140] In this embodiment, if the water level H in the water tank 4 is less than the warning liquid level height and the cooling mode is not ended, the push-pull mechanism 18 is controlled to work, and the water absorbing member 17 is squeezed back and forth, while the water level in the water tank 4 is monitored. The push-pull mechanism 18 squeezes the water absorbing member 17 to squeeze out the water in the water absorbing member 17. The water absorbing member 17 can continue to absorb water to relieve the pressure of the condensed water stored in the water tank 4. At this time, the condensed water generated during the operation of the cooling mode can continue to be absorbed by the water absorbing member 17 that releases the condensed water. If the water level H in the water tank 4 is less than the warning liquid level height H1 and the cooling mode is ended, the push-pull mechanism 18 is controlled to stop working to prevent the water level in the water tank 4 from continuing to increase.

[0141] In one embodiment, the push-pull mechanism 18, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank 4, and further includes:

[0142] Determine whether the water level H in the water tank 4 is less than the initial value H0, where H0

[0143] If H<H0, the cooling mode can be turned on normally next time;

[0144] If H≥H0, the push-pull mechanism 18 is controlled to operate.

[0145] ​​​In this embodiment, during the operation of the refrigeration mode, the water level H in the water tank 4 is monitored in real time. If the water level in the water tank 4 does not exceed the initial value H0, it means that the condensed water collected in the water tank 4 does not exceed the warning liquid level due to the water absorption effect of the water absorbent 17. At this time, there is no need to remind the user to pour out the condensed water, and the refrigeration mode can be started normally next time. If the user has to pour out the condensed water after each refrigeration mode operation, it will cause a poor user experience.

[0146] In one embodiment, the push-pull mechanism 18, the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank 4, and further includes:

[0147] If H1<H<H2 and the cooling mode ends, the push-pull mechanism 18 is controlled to operate when the cooling mode starts next time.

[0148] In this embodiment, if H1<H<H2 and the cooling mode ends, it means that the storage of condensed water in the water tank 4 is alleviated due to the absorption of the water absorbent 17. At this time, if the push-pull mechanism 18 continues to operate, the amount of condensed water in the water tank 4 may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop operating and the prompt module is controlled to issue a prompt message to remind the user to pour out the condensed water in the water tank 4. If the user forgets to dump the condensed water, the next time the cooling mode is running, the squeezing mechanism above the water absorbing member 17 is controlled to squeeze the water absorbing member 17 back and forth, so as to squeeze out the condensed water in the water absorbing member 17 and release space for water absorption. During the continuous operation of the cooling mode, when the liquid level in the water tank 4 is monitored to have not reached the limit liquid level H2, it means that the water absorbing member 17 that has released the water absorption space has relieved the space for storing water in the water tank 4 by absorbing water. After the cooling mode ends, the user is reminded to dump the condensed water. If the user still forgets to dump the condensed water, when the next cooling mode is running, the liquid level in the water tank 4 exceeds H2, the cooling mode is controlled to stop running. The cooling mode can only be operated as above after the user disassembles the water tank 4 to dump the condensed water and installs it in place, thereby further achieving the technical effect that even if the user forgets to dump the condensed water, the condensed water will not overflow.

[0149] The control method of the range hood provided in this embodiment monitors the condensed water in the water tank 4 in real time during the operation of the refrigeration mode. During the operation of the refrigeration mode, when the condensed water level does not exceed the initial value H0, it means that the condensed water collected in the water tank 4 does not exceed the warning level H1 under the water absorption effect of the water absorption member 17. At this time, there is no need to remind the user to dump the condensed water. If the user has to dump the condensed water after each refrigeration mode operation, it will cause a poor user experience. The next time the refrigeration mode continues to operate, when the condensed water level in the water tank 4 exceeds the warning level H1, it is detected whether the refrigeration mode is in operation. If the refrigeration mode is in operation, the push-pull mechanism 18 on the upper part of the water absorption member 17 is controlled to squeeze the water absorption member 17 back and forth, and the condensed water level in the water tank 4 is monitored in real time. The push-pull mechanism 18 squeezes the water absorption member 17 to squeeze out the water in the water absorption member 17. The water absorption member 17 can continue to absorb water to relieve the pressure of the condensed water stored in the water tank 4. At this time, the condensed water generated during the operation of the refrigeration mode can continue to enter the refrigeration mode through the water absorption member 17 that releases the condensed water. If the cooling mode is ended, the height of the condensed water in the water tank 4 does not exceed the limit liquid level H2 due to the increase in the inflow of condensed water generated by squeezing the water absorbing member 17, which means that the storage of condensed water in the water tank 4 is relieved under the absorption of the water absorbing member 17. At this time, the push-pull mechanism 18 is controlled to stop operating. If it continues to operate, the amount of condensed water in the water tank 4 will exceed its own storage space and cause overflow. The whole machine sends out a voice signal or light signal to remind the user to dump the condensed water in the water tank 4. If it is not dumped, the limit storage space of the water tank 4 has been reached. Continuing to let the condensed water flow into the water tank 4 will inevitably cause overflow. After receiving the reminder signal, the user can disassemble the water tank 4 and pour out the condensed water. At the same time, the multiple absorbent members 17 inserted in the groove above the water tank 4 are removed, and the condensed water accumulated inside the absorbent member 17 is manually wrung out. After wrung out, the absorbent member 17 can be installed into the groove above the water tank 4. After installation, the water tank 4 with the absorbent member 17 installed is installed on the casing 1; if the cooling mode is ended, the condensed water height in the water tank 4 increases to more than the limit liquid level H2 due to the inflow of condensed water generated by squeezing the absorbent member 17, and the cooling mode is controlled to stop working. Because if the cooling mode continues to work, the continuously generated condensed water exceeds the limit space of the water tank 4, the user is reminded to pour out the condensed water, deal with the absorbent member 17, install the water tank 4 in place, and then control the cooling mode to continue working. The next time the range hood is turned on, when the height of the condensed water in the water tank 4 exceeds the warning liquid level H1, it is detected whether the refrigeration mode is running. If the refrigeration mode is not running, the whole machine is controlled to send a voice signal or a light signal to remind the user to pour out the condensed water, reminding the user to remove the water tank 4 in time to pour out the condensed water inside.

[0150] According to an embodiment of the present invention, on the other hand, a control device for a range hood is further provided, which is applied to the range hood provided in the above embodiment, and the control device comprises:

[0151] An acquisition module, used to acquire the water level H in the water tank 4;

[0152] The control module is used to control the push-pull mechanism 18, the cooling mode and whether the prompt module is running according to the water level H in the water tank 4.

[0153] In this embodiment, the acquisition module acquires the water level H in the water tank 4, and the control module controls the push-pull mechanism 18, the cooling mode and whether the prompt module is running according to the water level H in the water tank 4, so as to avoid the overflow of condensed water in the water tank 4.

[0154] Specifically, when the water level H in the water tank 4 is low, the push-pull mechanism 18 can be controlled to release the condensed water in the water absorbing member 17, so that the water absorbing member 17 continues to absorb water, thereby alleviating the condensed water storage pressure in the water tank 4. When the water level H in the water tank 4 is high, the cooling mode can be controlled to stop working and the prompt module can be controlled to send a prompt message to prevent the cooling mode from continuing to work and causing the condensed water in the water tank 4 to overflow, and to prompt the user to pour out the condensed water in the water tank 4.

[0155] In one embodiment, the control module includes:

[0156] The first judgment module is used to judge whether the water level H in the water tank 4 is greater than the warning liquid level height H1 and less than the limit liquid level height H2 and whether the cooling mode is ended;

[0157] The first control submodule is used to control the push-pull mechanism 18 to stop working and control the prompt module to issue a prompt message when H1<H<H2 and the cooling mode ends;

[0158] The second control submodule is used to control the push-pull mechanism 18 to work when H1<H<H2 and the cooling mode is not ended;

[0159] The third control submodule is used to control the push-pull mechanism 18 to stop working, the cooling mode to stop running, and the prompt module to send out a prompt message when H≥H2.

[0160] In this embodiment, if the refrigeration mode ends, the height of the condensed water in the water tank 4 does not exceed the maximum liquid level height due to the inflow of condensed water generated by squeezing the water absorbing member 17, that is, H1<H<H2, indicating that the storage of condensed water in the water tank 4 is alleviated under the absorption of the water absorbing member 17. At this time, if the push-pull mechanism 18 continues to operate, the amount of condensed water in the water tank 4 may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop operating and the prompt module is controlled to issue a prompt message to remind the user to pour out the condensed water in the water tank 4.

[0161] In this embodiment, a prompt message is issued to prompt the user to dump the condensed water only when the water level H in the water tank 4 is greater than H1 and the cooling mode ends. It is not necessary to prompt the user to dump the condensed water every time the cooling mode ends. If H1<H<H2 and the cooling mode continues to operate, the push-pull mechanism 18 is controlled to work, and the water absorbing member 17 is squeezed back and forth, while the water level in the water tank 4 is monitored. The push-pull mechanism 18 squeezes the water absorbing member 17 to squeeze out the water in the water absorbing member 17. The water absorbing member 17 can continue to absorb water to relieve the pressure of the condensed water stored in the water tank 4. At this time, the condensed water generated during the operation of the cooling mode can continue to be absorbed by the water absorbing member 17 that releases the condensed water. If the water level H in the water tank 4 is greater than or equal to the maximum liquid level height H2, if the refrigeration mode continues to run or the push-pull mechanism 18 continues to work, the amount of condensed water in the water tank 4 will exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop working, the refrigeration mode stops running, and the prompt module sends a prompt message to remind the user to pour out the condensed water in the water tank 4. After handling the water absorbing part 17 and pouring out the condensed water in the water tank 4, the water tank 4 is installed in place, and the refrigeration mode is controlled to continue running after installation.

[0162] It should be noted that if the user needs to pour out the condensed water after each cooling mode operation, it will lead to a poor user experience.

[0163] It should be noted that after receiving the prompt information sent by the prompt module, the user can disassemble the water tank 4 and pour out the condensed water. At the same time, remove the water absorbent part 17 above the water tank 4, manually wring out the condensed water accumulated inside the water absorbent part 17, and then install the water absorbent part 17 on the water tank 4 after wringing it out. After the installation is completed, install the water tank 4 with the water absorbent part 17 installed on the casing 1.

[0164] In one embodiment, after the control module controls the push-pull mechanism 18 to stop working, the cooling mode to stop running, and the prompt module to send a prompt message, the control module controls the push-pull mechanism 18, the cooling mode, and whether the prompt module is running according to the water level in the water tank 4, and further includes:

[0165] The second judgment module is used to judge whether the user has removed and installed the water tank 4 in place after the push-pull mechanism 18 stops working, the cooling mode stops running, and the prompt module sends a prompt message;

[0166] The fourth control submodule is used to control the refrigeration mode to resume operation when the user removes the water tank 4 and installs it in place.

[0167] In this embodiment, if the water level H in the water tank 4 is greater than or equal to the limit liquid level height H2, if the refrigeration mode continues to operate or the push-pull mechanism 18 continues to work, the amount of condensed water in the water tank 4 will exceed its own storage space and cause overflow, so the push-pull mechanism 18 is controlled to stop working, the refrigeration mode stops running, and the prompt module sends a prompt message to remind the user to pour out the condensed water in the water tank 4. After the user handles the water absorbing member 17 and pours out the condensed water in the water tank 4, the water tank 4 is installed in place, and the refrigeration mode is controlled to continue to operate after it is installed in place. In order to prevent the user from forgetting to pour out the condensed water in the water tank 4, it is determined whether the user has disassembled and installed the water tank 4 in place. Only when the water tank 4 is disassembled and installed in place again, the refrigeration mode is controlled to resume operation to prevent the condensed water from overflowing due to the user forgetting to pour out the condensed water.

[0168] In one embodiment, the control module further includes:

[0169] The third judgment module is used to judge whether the water level H in the water tank 4 is less than the warning liquid level height H1 and whether the cooling mode is ended;

[0170] A fifth control submodule, used to control the push-pull mechanism 18 to work when H

[0171] The sixth control submodule is used to control the push-pull mechanism 18 to stop working when H

[0172] In this embodiment, if the water level H in the water tank 4 is less than the warning liquid level height and the cooling mode is not ended, the push-pull mechanism 18 is controlled to work, and the water absorbing member 17 is squeezed back and forth, while the water level in the water tank 4 is monitored. The push-pull mechanism 18 squeezes the water absorbing member 17 to squeeze out the water in the water absorbing member 17. The water absorbing member 17 can continue to absorb water to relieve the pressure of the condensed water stored in the water tank 4. At this time, the condensed water generated during the operation of the cooling mode can continue to be absorbed by the water absorbing member 17 that releases the condensed water. If the water level H in the water tank 4 is less than the warning liquid level height and the cooling mode is ended, the push-pull mechanism 18 is controlled to stop working to prevent the water level in the water tank 4 from continuing to increase.

[0173] In one embodiment, the control module further includes:

[0174] The fourth judgment module is used to judge whether the water level H in the water tank 4 is less than the initial value H0, wherein H0

[0175] The seventh control submodule is used to control the next refrigeration mode to start normally when the water level H in the water tank 4 is less than the initial value H0;

[0176] The eighth control submodule is used to control the push-pull mechanism 18 to operate when the water level H in the water tank 4 is greater than or equal to the initial value H0.​​​

[0177] In this embodiment, during the operation of the refrigeration mode, the water level H in the water tank 4 is monitored in real time. If the water level in the water tank 4 does not exceed the initial value H0, it means that the condensed water collected in the water tank 4 does not exceed the warning liquid level due to the water absorption effect of the water absorbent 17. At this time, there is no need to remind the user to pour out the condensed water, and the refrigeration mode can be started normally next time. If the user has to pour out the condensed water after each refrigeration mode operation, it will cause a poor user experience.

[0178] In one embodiment, the control module further includes:

[0179] The ninth control submodule is used to control the push-pull mechanism 18 to work when the cooling mode is turned on next time when H1<H<H2 and the cooling mode ends.

[0180] In this embodiment, if H1<H<H2 and the cooling mode ends, it means that the storage of condensed water in the water tank 4 is alleviated due to the absorption of the water absorbent 17. At this time, if the push-pull mechanism 18 continues to operate, the amount of condensed water in the water tank 4 may exceed its own storage space and cause overflow. Therefore, the push-pull mechanism 18 is controlled to stop operating and the prompt module is controlled to issue a prompt message to remind the user to pour out the condensed water in the water tank 4. If the user forgets to dump the condensed water, the next time the cooling mode is running, the squeezing mechanism above the water absorbing member 17 is controlled to squeeze the water absorbing member 17 back and forth, so as to squeeze out the condensed water in the water absorbing member 17 and release space for water absorption. During the continuous operation of the cooling mode, when the liquid level in the water tank 4 is monitored to have not reached the limit liquid level H2, it means that the water absorbing member 17 that has released the water absorption space has relieved the space for storing water in the water tank 4 by absorbing water. After the cooling mode ends, the user is reminded to dump the condensed water. If the user still forgets to dump the condensed water, when the next cooling mode is running, the liquid level in the water tank 4 exceeds H2, the cooling mode is controlled to stop running. The cooling mode can only be operated as above after the user disassembles the water tank 4 to dump the condensed water and installs it in place, thereby further achieving the technical effect that even if the user forgets to dump the condensed water, the condensed water will not overflow.

[0181] It should be noted that the term "module" may be a combination of software and / or hardware that implements a predetermined function. Although the apparatus described in the above embodiments is preferably implemented in software, implementation in hardware or a combination of software and hardware is also possible and conceivable.

[0182] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. A range hood, characterized in that: include: Housing (1); An air conditioning component is arranged in the casing (1), and the air conditioning component comprises a compressor (2), a condenser (5) and an evaporator (6); a water tank (4) detachably connected to the housing (1) and used to receive condensed water dripping from the evaporator (6); The water absorbing member (17) is arranged above the water tank (4).

2. The range hood according to claim 1, characterized in that: The water absorbing member (17) is detachably connected to the water tank (4).

3. The range hood according to claim 1, characterized in that: A liquid level sensor is provided in the water tank (4), and the range hood further comprises a controller and a prompt module. The controller is in communication connection with the liquid level sensor and the prompt module, and can control the prompt module to issue a prompt message when the water level in the water tank (4) is higher than the warning liquid level height.

4. The range hood according to claim 3, characterized in that: A push-pull mechanism (18) is also provided in the housing (1), and the push-pull mechanism (18) is suitable for squeezing the water absorbing member (17), and the controller is communicatively connected with the push-pull mechanism (18).

5. The range hood according to claim 4, characterized in that: The controller is also used to control the push-pull mechanism (18) to stop operating and control the refrigeration mode to stop running when the water level in the water tank (4) is greater than or equal to the limit liquid level height.

6. The range hood according to any one of claims 1 to 5, characterized in that: A water receiving box (9) is provided below the evaporator (6), and the water receiving box (9) is connected to the water tank (4) through a flow channel.

7. The range hood according to any one of claims 1 to 5, characterized in that: The casing (1) is provided with a cold air outlet (16), the air outlet of the evaporator (6) is in communication with the cold air outlet, and the casing (1) is further provided with: A fume extractor fan (3), wherein the air outlet of the condenser (5) is connected to the fume extractor fan (3); A smoke exhaust passage (13) is connected to the air outlet of the range fumes exhaust fan (3), and an opening is provided on one side of the smoke exhaust passage (13); The purification device (7) comprises an air inlet side (14) and an air outlet side (15), wherein the air inlet side (14) is connected to the smoke exhaust passage (13) through the opening, and the air outlet side (15) is respectively connected to the air inlet of the condenser (5) and the air inlet of the evaporator (6).

8. The range hood according to claim 7, characterized in that: A guide plate (10) is provided at the opening, a first end of the guide plate (10) is arranged on a side wall of the smoke exhaust channel (13), and a second end of the guide plate (10) extends to the central axis of the smoke exhaust channel (13).

9. The range hood according to claim 8, characterized in that: The first end of the guide plate (10) is hinged to the side wall of the smoke exhaust channel (13), and the ratio of the air exhausted through the smoke exhaust channel (13) and the air entering the purification device (7) is adjusted by rotating the guide plate (10).

10. The range hood according to claim 7, characterized in that: The opening is also provided with a switch valve (11), the switch valve (11) having an open state for connecting the smoke exhaust passage (13) with the air inlet side (14), and a closed state for disconnecting the smoke exhaust passage (13) from the air inlet side (14).

11. The range hood according to claim 7, characterized in that: The evaporator (6) and the condenser (5) are separated by a baffle (12), and the baffle (12) is rotatably arranged.

12. The range hood according to any one of claims 8 to 11, characterized in that: The purification device (7) comprises an oil fume filtering device (8).

13. A control method for a range hood, characterized in that: Applicable to the range hood according to any one of claims 1 to 12, the control method comprises: Obtaining the water level H in the water tank (4); The push-pull mechanism (18), the cooling mode and whether the prompt module is running are controlled according to the water level H in the water tank (4).

14. The control method of the range hood according to claim 13, characterized in that: The method of controlling the push-pull mechanism (18), the cooling mode and whether the prompt module is running according to the water level H in the water tank (4) comprises: Determine whether the water level H in the water tank (4) is greater than the warning liquid level height H1 and less than the limit liquid level height H2 and whether the cooling mode is terminated; If H1<H<H2 and the cooling mode ends, the push-pull mechanism (18) is controlled to stop working and the prompt module is controlled to issue a prompt message; If H1<H<H2 and the cooling mode has not ended, the push-pull mechanism (18) is controlled to operate; If H≥H2, the push-pull mechanism (18) is controlled to stop operating, the cooling mode stops running, and the prompt module sends a prompt message.

15. The control method of the range hood according to claim 14, characterized in that: After the push-pull mechanism (18) is controlled to stop operation, the refrigeration mode is stopped, and the prompt module issues a prompt message, the push-pull mechanism (18), the refrigeration mode, and whether the prompt module is running are controlled according to the water level in the water tank (4), and further comprises: Determine whether the user has removed and installed the water tank (4) in place; If yes, control the cooling mode to resume operation.

16. The control method of the range hood according to claim 14, characterized in that: The method of controlling the push-pull mechanism (18), the cooling mode and whether the prompt module is running according to the water level in the water tank (4) also includes: Determine whether the water level H in the water tank (4) is less than the warning liquid level height H1 and whether the cooling mode is terminated; If H<H1 and the cooling mode has not ended, the push-pull mechanism (18) is controlled to operate; If H<H1 and the cooling mode ends, the push-pull mechanism (18) is controlled to stop working.

17. The control method of the range hood according to claim 16, characterized in that: The method of controlling the push-pull mechanism (18), the cooling mode and whether the prompt module is running according to the water level H in the water tank (4) also includes: Determine whether the water level H in the water tank (4) is less than an initial value H0, where H0<H1; If H<H0, the cooling mode can be turned on normally next time; If H≥H0, the push-pull mechanism (18) is controlled to work.

18. The control method of a range hood according to any one of claims 14 to 17, characterized in that: The method of controlling the push-pull mechanism (18), the cooling mode and whether the prompt module is running according to the water level H in the water tank (4) also includes: If H1<H<H2 and the cooling mode ends, the push-pull mechanism (18) is controlled to operate when the cooling mode is turned on next time.

19. A control device for a range hood, characterized in that: Applicable to the range hood according to any one of claims 1 to 12, the control device comprises: An acquisition module, used for acquiring a water level H in the water tank (4); The control module is used to control the push-pull mechanism (18), the cooling mode and whether the prompt module is running according to the water level H in the water tank (4).

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