Refrigeration type range hood

Abstract

A refrigeration type range hood comprises a machine shell, an oil smoke suction fan, a compressor, a condenser, an evaporator and an inner machine fan are installed in the machine shell, a downstream air channel of an air outlet of the oil smoke suction fan is divided into a first air channel and a second air channel, and first valves are installed at an inlet of the first air channel and an inlet of the second air channel. Second valves are mounted at the second air duct outlet and the second air duct outlet, and the third valve moves into the first air duct to close the first air duct and moves into the second air duct to close the second air duct. According to the refrigeration type range hood, a downstream air duct of an air outlet of a lampblack suction fan is switched between a first air duct and a second air duct through switching of a plurality of valves, the first air duct is opened in a refrigeration mode, the second air duct is opened in a lampblack suction mode, and the second air duct is opened in a condenser water treatment mode. Condensate water dripping from the condenser is guided into the oil smoke channel through the third valve and is finally blown into the public flue or flows into an oil cup of the range hood, and effective treatment of the condensate water is achieved.

Description

Technical Field

[0001] The utility model relates to a range hood, in particular to a refrigerating range hood. Background Art

[0002] In order to solve the pain point of the sultry kitchen during summer cooking, people have invented a refrigerating range hood. The refrigerating range hood adds an air conditioning component on the basis of the range hood platform, which can not only realize all the functions of the range hood but also the functions of an air conditioner. The compressor, condenser and evaporator of the air conditioning component are connected through a refrigerant pipeline. In the existing refrigerating range hood, the condenser is usually installed in the oil fume passage of the range hood. When the user uses the kitchen air conditioner in the kitchen, the heat dissipation air of the kitchen air conditioner is discharged through the common flue. On the one hand, it occupies the effective air volume of the range hood itself and affects the oil fume extraction effect. On the other hand, since the condenser is in the oil fume passage and all the oil fume air passes through the condenser, there is a risk of the condenser being contaminated by oil stains. In order to dissipate the heat of the condenser, a scheme of using condensed water to dissipate the heat of the condenser is disclosed in the prior art. For example, the "Air-Conditioned Range Hood" disclosed in the Chinese utility model patent with the patent number 202122814657.X (the authorized announcement number is CN 21657289 U). A compressor and an oil fume extraction fan are arranged in the casing of this range hood, an air conditioner indoor unit is installed on the casing, the inner casing of the air conditioner indoor unit can receive the condensed water condensed on the surface of the evaporator, a condenser is installed in the smoke exhaust passage, and a liquid distributor capable of distributing liquid to the surface of the condenser is installed in the smoke exhaust passage. The condensed water in the inner casing is conveyed to the liquid distributor. Although, this air-conditioned range hood can use condensed water to dissipate the heat of the condenser, it does not intelligently adjust the utilization of the condensed water, and the degree of intelligence is not high, so it needs to be further improved. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a refrigerating range hood capable of switching between a refrigeration mode and a range hood module by controlling multiple valves according to the above-mentioned current situation of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problem is: a refrigerating range hood, including a casing, an oil fume extraction fan, a compressor, a condenser, an evaporator and an inner machine fan are installed in the casing, the compressor, the condenser and the evaporator are connected through a refrigerant pipeline, and it is characterized in that: the air duct downstream of the air outlet of the oil fume extraction fan is divided into a first air duct and a second air duct, a first valve capable of switching between the first air duct and the second air duct is installed at the inlet of the first air duct and the inlet of the second air duct, a second valve capable of switching between the first air duct and the second air duct is installed at the outlet of the second air duct and the outlet of the second air duct, and a third valve is further included, and the third valve can move into the first air duct to close the first air duct and can move into the second air duct to close the second air duct.

[0005] In order to collect the condensed water condensed on the surface of the evaporator and convey it to the condenser, a water receiving box is provided below the evaporator, and the condensed water in the water receiving box can be conveyed to the surface of the condenser through a water pump. With this arrangement, on the one hand, the heat dissipation problem of the condenser is solved, and on the other hand, the treatment of the condensed water is also achieved.

[0006] In order to detect the water level of the water receiving box, a water level sensor is installed in the water receiving box.

[0007] Further preferably, the water pump is arranged in the water receiving box, the water inlet end of the water outlet pipe is installed at the outlet of the water pump, a spray head is installed at the water outlet end of the water outlet pipe, and the water spray port of the spray head faces the condenser. With this arrangement, when the water level in the water receiving box reaches the limit value, the water pump can be turned on to spray water on the surface of the condenser through the spray head.

[0008] In order to detect the indoor environmental temperature, a temperature sensor for detecting the temperature outside the casing is installed on the casing.

[0009] Further preferably, a purification unit is also installed in the first air duct. Along the flow direction of the oil fume, the purification unit is arranged upstream of the condenser. In the state where the third valve moves into the first air duct, the third valve is arranged between the condenser and the purification unit, the vertical projection of the condenser falls on the third valve, and the end of the third valve is exposed in the second air duct. After setting the purification unit, the condenser can be prevented from being polluted by the oil fume. The third valve is located below the condenser, and the water falling on the condenser can drip onto the third valve and then be discharged into the second air duct, that is, the oil fume passage. At this time, the oil fume suction fan blows part of the condensed water directly into the flue, and the other part flows into the volute of the range hood and is scattered by the fan and then blown into the flue again. Finally, the remaining water flows into the oil cup.

[0010] The third valve can adopt various structures. Preferably, the third valve is a telescopic valve capable of moving horizontally.

[0011] In order to prevent the oil fume in the common flue from flowing back, the outlets of the first air duct and the second air duct converge to form an external discharge channel, and a check valve is installed in the external discharge channel.

[0012] In order to enable the cold air of the air conditioner to blow out from the casing, an air outlet module is installed on the casing, and the air outlet of the indoor unit fan is in fluid communication with the air outlet module through an air outlet channel.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: By switching the first valve, the second valve, and the third valve, the air duct downstream of the air outlet of the oil fume extraction fan can be switched between the first air duct and the second air duct. The first air duct is opened in the refrigeration mode, and the second air duct is opened in the oil fume extraction mode. In the condenser water treatment mode, the condensed water dripping from the condenser is diverted through the third valve into the oil fume channel, and finally blown into the common flue or flows into the oil cup of the oil fume extractor, realizing the effective treatment of the condensed water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Structural schematic diagram of the oil fume extractor according to an embodiment of the present utility model (refrigeration mode);

[0015] Figure 2 Structural schematic diagram of the oil fume extractor according to an embodiment of the present utility model (condenser water treatment mode);

[0016] Figure 3 Structural schematic diagram of the oil fume extractor according to an embodiment of the present utility model (oil fume extraction mode);

[0017] Figure 4 Flow chart of the control method of the oil fume extractor according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described in detail below in conjunction with the embodiments of the accompanying drawings.

[0019] As Figures 1 to 3 shown, the refrigerating type oil fume extractor of this embodiment includes a machine shell 1, in which an oil fume extraction fan 2, a compressor 3, a condenser 4, an evaporator 5 and an indoor fan 6 are installed. The compressor 3, the condenser 4 and the evaporator 5 are connected and communicated through a refrigerant pipeline 7. An air outlet module (not shown in the figure) is installed on the machine shell 1, and the air outlet of the indoor fan 6 is fluidly communicated with the air outlet module through an air outlet channel. When working in the refrigeration mode, cold air is blown out through the air outlet of the air outlet module.

[0020] The air duct downstream of the air outlet of the oil fume extraction fan 2 is divided into a first air duct 81 and a second air duct 82. A first valve 91 is installed at the inlet of the first air duct 81 and the inlet of the second air duct 82, and a second valve 92 is installed at the outlet of the second air duct 82 and the outlet of the second air duct 82. The first valve 91 and the second valve 92 are rotary valves, and both the first valve 91 and the second valve 92 are used to switch between the first air duct 81 and the second air duct 82. It further includes a third valve 93, and the third valve 93 is a telescopic valve that can move horizontally. The third valve 93 can move into the first air duct 81 to close the first air duct 81, and can move into the second air duct 82 to close the second air duct 82.

[0021] A purification unit 15 is also installed in the first air duct 81. The purification unit 15 usually adopts an electrostatic module. Along the oil fume flow direction, the purification unit 15 is arranged upstream of the condenser 4. In this embodiment, the condenser 4 is obliquely arranged, and the purification unit 15 is located below the condenser 4. When the third valve 93 moves into the first air duct 81, the third valve 93 is arranged between the condenser 4 and the purification unit 15. The vertical projection of the condenser 4 falls on the third valve 93, and the end of the third valve 93 is exposed in the second air duct 82.

[0022] A water receiving box 10 is provided below the evaporator 5. The water pump 11 is arranged in the water receiving box 10. The water inlet end of the water outlet pipe 13 is installed at the outlet of the water pump 11. The water outlet end of the water outlet pipe 13 is equipped with a spray head 14. The water spraying port of the spray head 14 faces the condenser 4. When the water pump 11 works, the condensed water in the water receiving box 10 is conveyed to the surface of the condenser 4 to dissipate heat and clean the condenser 4. A water level sensor 12 is installed in the water receiving box 10. The water level sensor 12 detects the water level of the water receiving box 10 and controls the working state of the water pump 11 according to the water level.

[0023] A temperature sensor (not shown in the figure) for detecting the external temperature of the casing 1 is installed on the casing 1. After the range hood is installed in the kitchen, the temperature sensor can be used to detect the room temperature in the kitchen, and whether to turn on the air conditioning function can be determined according to the room temperature. For example, the set temperature for turning on the air conditioning can be set to 16 °C.

[0024] In this embodiment, in order to prevent the oil fume in the common flue from flowing back into the range hood, the outlets of the first air duct 81 and the second air duct 82 converge to form an exhaust passage 16, and a check valve 17 is installed in the exhaust passage 16.

[0025] As Figure 1 shown, in the refrigeration mode, the first valve 91 and the second valve 92 rotate to the second air duct 82 side to the right, and the third valve 93 moves into the second air duct 82. At this time, the first air duct 81 is opened and the second air duct 82 is closed. The oil fume is first purified by the purification unit 15, then the condenser 4 is cooled, and then discharged into the flue. The condensed water generated by the evaporator 5 accumulates in the water receiving box 10, and the water pump 11 does not work.

[0026] As Figure 2As shown in the figure, for the condensate water treatment mode, the first valve 91 and the second valve 92 rotate leftward to the side of the first air duct 81, and the third valve 93 moves into the second air duct 81. At this time, the first air duct 81 is closed and the second air duct 82 is opened. The user has turned off the refrigeration module, but the oil fume extraction fan 2 is still running. The water pump 11 works, and the nozzle sprays onto the condenser 4 to clean the condensate water. The sewage drops onto the third valve 93 and is discharged from the third valve 93 into the second air duct 82, that is, the oil fume passage. At this time, the oil fume extraction fan 2 blows a part of the condensate water directly into the exhaust passage 16, and another part flows into the volute of the oil fume extraction fan 2 and is dispersed by the fan and then blown into the exhaust passage 16 again. The remaining water flows into the oil cup.

[0027] As Figure 3 shown in the figure, for the oil fume extraction mode, the first valve 91 and the second valve 92 rotate leftward to the side of the first air duct 81, and the third valve 93 moves into the second air duct 81. At this time, the first air duct 81 is closed and the second air duct 82 is opened. The oil fume is directly discharged into the exhaust passage 16 through the second air duct 82, that is, the oil fume passage.

[0028] As Figure 4 shown, the control method of the refrigerating range hood in this embodiment includes the following steps:

[0029] S1. Start;

[0030] S2. Determine whether it is the range hood mode;

[0031] If it is, switch the first valve 91 and the second valve 92 to close the first air duct 81, and move the third valve 93 into the first air duct 81 to open the second air duct 82; then enter step S11;

[0032] If not, enter step S3;

[0033] S3. Determine whether the room temperature is lower than the set temperature;

[0034] If it is, enter step S11;

[0035] If not, enter step S4;

[0036] S4. Switch the first valve 91 and the second valve 92 to open the first air duct 81, and move the third valve 93 into the second air duct 82 to close the second air duct;

[0037] S5. The compressor 3 works, the water pump 11 does not work, the indoor fan 6 and the oil fume extraction fan 2 work;

[0038] S6. Determine whether the water level in the water receiving box 10 is lower than the limit value;

[0039] If it is, return to step S5;

[0040] If not, turn off the air conditioner and turn on the range hood.

[0041] S7. Switch the first valve 91 and the second valve 92 to close the first air duct 81, move the third valve 93 into the first air duct 81 to open the second air duct 82, and the oil fume suction fan 2 operates.

[0042] S8. The water pump 11 operates.

[0043] S9. Determine whether the water level in the water receiving box 10 is lower than the limit value.

[0044] If so, the water pump 11 stops operating, and then proceed to step S10.

[0045] If not, return to step S8.

[0046] S10. Determine whether the air conditioner is turned off.

[0047] If so, proceed to step S11.

[0048] If not, return to step S4.

[0049] S11. End.

[0050] In the description and claims of the present utility model, terms indicating directions such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc. are used to describe various exemplary structural parts and elements of the present utility model. However, these terms are used herein only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present utility model can be arranged in different directions, these terms indicating directions should be regarded as illustrative rather than restrictive. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0051] As used herein, "fluid communication" refers to the spatial position relationship between two components or parts, hereinafter uniformly referred to as the first part and the second part respectively, that is, fluid (gas, liquid, or a mixture of both) can flow along the flow path or / and be transported from the first part to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party, which can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc., or a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A refrigerating range hood, comprising a housing (1), wherein an oil suction and smoke exhaust fan (2), a compressor (3), a condenser (4), an evaporator (5) and an internal unit fan (6) are installed in the housing (1), and the compressor (3), the condenser (4) and the evaporator (5) are connected through a refrigerant pipeline (7), characterized in that: The air duct downstream of the outlet of the oil fume fan (2) is divided into a first air duct (81) and a second air duct (82). A first valve (91) capable of switching between the first air duct (81) and the second air duct (82) is installed at the inlet of the first air duct (81) and the inlet of the second air duct (82). A second valve (92) capable of switching between the first air duct (81) and the second air duct (82) is installed at the outlet of the second air duct (82) and the outlet of the second air duct (82). A third valve (93) is further included. The third valve (93) can move into the first air duct (81) to close the first air duct (81), and can move into the second air duct (82) to close the second air duct (82).

2. The refrigerated range hood according to claim 1, wherein: A water receiving box (10) is provided below the evaporator (5). The condensed water in the water receiving box (10) can be transported to the surface of the condenser (4) by a water pump (11).

3. The refrigerating range hood according to claim 2, wherein: A water level sensor (12) is installed in the water receiving box (10).

4. The refrigerating range hood according to claim 2, wherein: The water pump (11) is arranged in the water receiving box (10). The inlet end of the water outlet pipe (13) is installed at the outlet of the water pump (11), and a spray head (14) is installed at the outlet end of the water outlet pipe (13). The water spraying port of the spray head (14) faces the condenser (4).

5. The refrigerated range hood according to claim 1, wherein: A temperature sensor for detecting the external temperature of the machine shell (1) is installed on the machine shell (1).

6. The refrigerated range hood according to claim 1, wherein: A purification unit (15) is further installed in the first air duct (81). Along the oil fume flow direction, the purification unit (15) is arranged upstream of the condenser (4). In the state where the third valve (93) moves into the first air duct (81), the third valve (93) is arranged between the condenser (4) and the purification unit (15). The vertical projection of the condenser (4) falls on the third valve (93), and the end of the third valve (93) is exposed in the second air duct (82).

7. The refrigerating range hood according to claim 1, wherein: The third valve (93) is a telescopic valve capable of lateral movement.

8. The refrigerated range hood according to claim 1, wherein: The outlets of the first air duct (81) and the second air duct (82) converge to form an external discharge channel (16). A check valve (17) is installed in the external discharge channel (16).

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