Refrigeration range hood

Abstract

The utility model discloses a refrigeration range hood which comprises a lampblack suction assembly and a refrigeration assembly, the lampblack suction assembly comprises an air inlet, a fan frame and a fan system arranged in the fan frame, the fan system comprises a fan system input end and a fan system output end, and the air inlet is communicated with fluid at the fan system input end. The refrigerating system comprises a condenser which is arranged at the downstream of the fan system and can utilize exhausted air at the output end of the fan system to dissipate heat, the refrigerating extractor hood further comprises an air inlet pipe which can introduce outdoor air into the inner side of the fan frame, and the air inlet pipe is in fluid communication with the input end of the fan system; a first air inlet channel is formed between the air inlet pipe and the input end of the fan system, the air inlet and the input end of the fan system form a second air inlet channel, and the first air inlet channel and the second air inlet channel are alternatively communicated.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil fume purification device, especially a kind of refrigeration oil fume exhaust hood. BACKGROUND

[0002] With the improvement of material life level, people's requirement to kitchen environment is higher and higher, people need to use stove and the like in cooking process, a large amount of heat is generated in kitchen, which leads to the temperature rise of whole space, so that the comfort of environment is reduced. Therefore, the oil fume exhaust hood integrated with refrigeration assembly appears.

[0003] For example, a kind of oil fume exhaust hood with heat exchange function disclosed in Chinese utility model patent with application No.202222837398.7, including casing, oil fume fan, compressor, condenser and evaporator are installed in casing, exhaust chamber and air outlet chamber that are isolated from each other are equipped in casing, oil fume fan and condenser are located in exhaust chamber, evaporator is located in air outlet chamber, air outlet fan is also installed in air outlet chamber, further including heat exchanger, heat exchanger has first heat exchange part and second heat exchange part, first heat exchange part is located in exhaust chamber, second heat exchange part is located in air outlet chamber.

[0004] The above-mentioned patent only needs to work refrigeration assembly, the oil fume exhaust hood can inhale indoor air to cool condenser, whether in the stage of preparing food, cleaning or cooking, the oil fume exhaust hood can only inhale indoor air to cool condenser, which causes the cold air generated by refrigeration to be continuously sucked and discharged to outdoor, resulting in poor refrigeration effect and serious decline of refrigeration energy efficiency. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of refrigeration oil fume exhaust hood to solve the technical problems of the above-mentioned prior art, which can realize that oil fume exhaust hood does not inhale and discharge indoor cold air during preparing food and non-cooking period, realize global cooling, and has higher refrigeration energy efficiency ratio and better refrigeration experience.

[0006] The utility model adopts the technical scheme to solve the above-mentioned technical problems: a kind of refrigeration oil fume exhaust hood, including oil fume exhaust component and refrigeration assembly, the oil fume exhaust component includes air inlet, fan frame and fan system arranged in fan frame, the fan system includes fan system input end and fan system output end, the air inlet is in fluid communication with fan system input end, the refrigeration system includes condenser arranged downstream of fan system and capable of using exhaust at fan system output end to cool, characterized by: the refrigeration oil fume exhaust hood further includes air inlet pipe capable of introducing outdoor air to inside of fan frame, the air inlet pipe is in fluid communication with fan system input end, first air inlet passage is formed between the air inlet pipe and fan system input end, the air inlet and fan system input end form second air inlet passage, the first air inlet passage and second air inlet passage are connected alternatively.

[0007] By setting the air inlet pipe, outdoor air is introduced to cool the condenser, so that during food preparation and non-cooking period, the range hood does not suck and exhaust indoor cold air, realizes global cooling, has higher refrigeration energy efficiency ratio and better refrigeration experience.

[0008] In order to realize the heat dissipation of the condenser during non-cooking period and cooking period, the air inlet pipe and the fan frame are provided with a valve capable of communicating or closing the first air inlet channel, and the refrigeration range hood further comprises a smoke baffle capable of opening or closing the air inlet, when the smoke baffle closes the air inlet and closes the second air inlet channel, the valve opens the first air inlet channel, when the smoke baffle opens the air inlet and communicates the second air inlet channel, the valve closes the first air inlet channel.

[0009] In order to make the refrigerant flowing in the refrigerant channel fully cooled, improve the overall heat exchange efficiency, the condenser comprises a main body capable of heat conduction and a refrigerant channel provided on the main body, the main body is in the form of a pipeline, the refrigerant channel is directly formed in the inside of the wall part of the main body, on the oil smoke flow path, the condenser is arranged downstream of the range hood assembly, and the space surrounded by the main body of the condenser constitutes a smoke exhaust channel.

[0010] In order to improve the heat dissipation efficiency, the condenser further comprises a hollow heat dissipation pipe through which oil smoke can pass, the heat dissipation pipe is arranged inside the space surrounded by the main body and is spaced apart from the main body, and a heat conduction sheet is connected between the heat dissipation pipe and the main body.

[0011] Preferably, in order to ensure the heat dissipation efficiency, the wall part of the main body comprises two layers of heat conduction plates, and the gap between the two layers of heat conduction plates constitutes the refrigerant channel.

[0012] In order to arrange the condenser on the smoke exhaust pipe assembly, the range hood assembly further comprises a smoke exhaust pipe assembly, the smoke exhaust pipe assembly comprises a first smoke exhaust pipe and a second smoke exhaust pipe, the main body of the condenser is arranged between the first smoke exhaust pipe and the second smoke exhaust pipe, and the first smoke exhaust pipe is connected with the output end of the fan system at the end away from the main body.

[0013] In order to play a fire safety role, the end of the second smoke exhaust pipe away from the main body is provided with a fireproof valve.

[0014] Preferably, a smoke collecting hood is arranged below the fan frame, and the air inlet is arranged on the smoke collecting hood.

[0015] Compared with the prior art, the advantages of the present application are that by setting the air inlet pipe, outdoor air is introduced to cool the condenser, so that during food preparation and non-cooking period, the range hood does not suck and exhaust indoor cold air, realizes global cooling, has higher refrigeration energy efficiency ratio and better refrigeration experience. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 2 is a schematic diagram showing the flow of heat dissipation airflow of the condenser when the smoke baffle of the refrigeration range hood is closed according to an embodiment of the present application;

[0017] Figure 2 Fig. 3 is a side sectional view when the smoke baffle of the refrigeration range hood is closed according to an embodiment of the present application;

[0018] Figure 3 Fig. 4 is a schematic diagram showing the flow of heat dissipation airflow of the condenser when the smoke baffle of the refrigeration range hood is opened according to an embodiment of the present application;

[0019] Figure 4 Fig. 5 is a side sectional view when the smoke baffle of the refrigeration range hood is opened according to an embodiment of the present application;

[0020] Figure 5 Fig. 6 is a schematic diagram showing the condenser of the refrigeration assembly of the refrigeration range hood according to a first embodiment of the present application;

[0021] Figure 6 Fig. 7 is a sectional view of the condenser according to the first embodiment of the present application; Figure 5

[0022] Figure 7 Fig. 8 is an expanded schematic diagram of the condenser according to the first embodiment of the present application Figure 5

[0023] Figure 8 Fig. 9 is an expanded schematic diagram of an alternative embodiment of the condenser according to the first embodiment of the present application; Figure 5

[0024] Figure 9 Fig. 10 is an expanded schematic diagram of an alternative embodiment of the condenser according to the first embodiment of the present application; Figure 5

[0025] Figure 10 Fig. 11 is a schematic diagram showing the condenser of the refrigeration assembly of the refrigeration range hood according to a second embodiment of the present application;

[0026] Figure 11 Fig. 12 is a schematic diagram showing the condenser of the refrigeration assembly of the refrigeration range hood according to a third embodiment of the present application; DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] Referring to Fig. 1, a refrigeration range hood includes a range hood assembly 1 and a refrigeration assembly 2. The refrigeration assembly 2 is arranged above a ceiling 100. Figures 1-4

[0029] ​​​​​The oil fume suction assembly 1 comprises a fume collecting cover 11 and a fan frame 12 arranged above the fume collecting cover 11, the fume collecting cover 11 is provided with an air inlet 111, and the inner side of the fan frame 12 is provided with a fan system 13. In the embodiment, the oil fume suction machine is in a top suction type, and alternatively, the oil fume suction machine can be in any other existing type. The fan frame 12 can be a separate box body or a box body (such as a side suction type oil fume suction machine) with an air inlet function.

[0030] The fan system 13 comprises a fan system input end 131 and a fan system output end 132, the air inlet 111 is in fluid communication with the fan system input end 131, and the refrigeration assembly 2 comprises a condenser 21 capable of dissipating heat by exhaust gas at the fan system output end 132. The fan system output end 132 is connected with an exhaust pipe assembly. The condenser 21 is arranged on the exhaust pipe assembly.

[0031] The refrigeration oil fume suction machine further comprises an air inlet pipe 4 capable of introducing outdoor air into the inner side of the fan frame 12, the air inlet pipe 4 is in fluid communication with the fan system input end 131. A first air inlet passage is formed between the air inlet pipe 4 and the fan system input end 131, and the air inlet 111 and the fan system input end 131 form a second air inlet passage. The first air inlet passage and the second air inlet passage are selectively communicated, when the first air inlet passage is communicated, the second air inlet passage is closed, and when the second air inlet passage is communicated, the first air inlet passage is closed.

[0032] A valve 5 capable of communicating or closing the first air inlet passage is arranged between the air inlet pipe 4 and the fan frame 12, and the refrigeration oil fume suction machine further comprises a smoke baffle 14 capable of opening or closing the air inlet 111. When the smoke baffle 14 closes the air inlet 111 to close the second air inlet passage, the valve 5 opens the first air inlet passage, and when the smoke baffle 14 opens the air inlet 111 to communicate the first air inlet passage, the valve 5 closes the first air inlet passage.

[0033] By arranging the air inlet pipe 4, using the refrigeration function during food preparation and non-fire cooking, the smoke baffle 14 is in a closed state, the valve 5 is opened, the fan system 13 operates at a set speed, outdoor air is introduced to dissipate heat of the condenser 21, and then is discharged to the outdoor or public flue through the exhaust pipe assembly. In this mode, the oil fume suction machine does not suck and discharge indoor cold air, the kitchen can be cooled down, and the cooling effect is more significant. When cooking, the smoke baffle 14 is opened, the valve 5 is closed, the oil fume suction assembly sucks the gas generated during cooking and indoor air to dissipate heat of the condenser 21.

[0034] Referring to Figure 1 and Figure 3The smoke exhaust pipe assembly comprises a first smoke exhaust pipe 31 and a second smoke exhaust pipe 32. The condenser 21 comprises a main body 211 and a refrigerant passage 212, the main body 211 is in the shape of a hollow pipe, preferably a cylinder, and the refrigerant passage 212 is formed inside the wall of the main body 211. The space surrounded by the main body 211 of the condenser 21 constitutes a smoke exhaust passage 2112. The main body 211 of the condenser 21 is arranged between the first smoke exhaust pipe 31 and the second smoke exhaust pipe 32, and the end of the first smoke exhaust pipe 31 away from the main body 211 is connected to the output end 132 of the fan system. The end of the second smoke exhaust pipe 32 away from the main body 211 is provided with a fireproof valve 6.

[0035] Referring to Figure 5 In this embodiment, the main body 211 is arranged transversely, and the refrigerant passage 212 is in the shape of a transverse parallel return flow. The refrigerant passage 212 is in the shape of a parallel return flow, specifically, the refrigerant passage 212 comprises at least three transversely extending first passages 2123, a second passage 2124 connected between one end of each of two adjacent first passages 2123, and a third passage 2125 connected between the other end of each of two adjacent first passages 2123, the second passage 2124 and the third passage 2125 are arranged in a staggered manner, that is, the second passage 2124 and the third passage 2125 extend reversely at both ends of the same first passage 2123, the second passage 2124 extends to the direction of one of the adjacent first passages 2123 of the first passage 2123, and the third passage 2125 extends to the direction of the other of the adjacent first passages 2123 of the first passage 2123. The second passage 2124 is in the shape of a left convex curve, preferably an arc, and the third passage 2125 is in the shape of a right convex curve, preferably an arc.

[0036] Referring to Figure 6The wall of the main body 211 comprises two layers of heat-conducting plates 2111, the refrigerant channel 212 is directly formed between the two layers of heat-conducting plates 2111 without additional material, and the two layers of heat-conducting plates 2111 only have a gap at the position where the refrigerant channel 212 is formed, i.e. the gap between the two layers of heat-conducting plates 2111 directly constitutes the refrigerant channel 212, and the two layers of heat-conducting plates 2111 are attached at other positions. Optionally, the heat-conducting plates 2111 are metal plates, such as aluminum plates, two aluminum plates are hot-rolled and shaped, the refrigerant channel 212 is formed by blowing between the two aluminum plates, and then the whole is rolled into the required shape. The refrigerant in the refrigerant channel 212 can withstand a pressure of 2.3 MPa after hot rolling, and the refrigerant is in zero-gap contact with the heat-conducting plates 2111, so the heat exchange efficiency is extremely high, and the surface temperature of the condenser is not higher than 50°C in natural environment. In the existing air conditioner, the fins are commonly used, and the refrigerant and the heat-conducting material cannot be completely matched without a gap, so the heat transfer is not smooth, the temperature of the condenser itself is high, and the overall refrigeration effect of the refrigeration assembly is affected.

[0037] Therefore, the space surrounded by the heat-conducting plates 2111 of the inner layer of the main body 211 constitutes the exhaust flue 2112 through which the oil fume discharged by the fan system 13 passes before reaching the public flue, and the inner side wall surface of the heat-conducting plates 2111 of the inner layer (i.e. the inner side wall surface 2113 of the main body 211) and the outer side wall surface of the heat-conducting plates 2111 of the outer layer (i.e. the outer side wall surface 2114 of the main body 211) constitute heat dissipation surfaces. The heat dissipation surface on the inner side dissipates heat through the oil fume passing through the first exhaust flue 31, and the heat dissipation surface on the outer side also dissipates heat to a certain extent by contacting the room temperature air above the kitchen room ceiling 100 during operation. The room temperature air constitutes the heat dissipation fluid.

[0038] The refrigerant channel 212 has a refrigerant inlet 2121 and a refrigerant outlet 2122, as shown in Figures 7-9 After the refrigerant enters the refrigerant inlet 2121, it can be divided into one, two, three or more routes, and then combined into one route before flowing out of the refrigerant outlet 2122, so that the refrigerant flows out of the refrigerant outlet 2122. The refrigerant inlet 2121 and the refrigerant outlet 2122 can be located at the same end of the main body 211 in the axial direction (radial inflow and outflow), located at opposite ends of the main body 211 in the axial direction, or located at the same end of the main body 211 in the axial direction but realizing axial inflow and outflow, as shown in Figure 7 Figure 8 The arrows in the above Figure 9 Figures 7-9 indicate the flow path of the refrigerant.

[0039] Please refer to Figure 5 and Figure 6 ​​To further improve the heat exchange efficiency, the heat dissipation pipe 213 can be arranged inside the space surrounded by the main body 211 of the condenser 21, which is preferably a hollow cylinder with both axial ends open, arranged at the center of the main body 211, and preferably coaxial with the main body 211. The outer side wall of the heat dissipation pipe 213 and the inner side wall of the main body 211 are connected by heat conduction sheets 214, which can be at least two and radially distributed. The heat dissipation pipe 213 and the heat conduction sheets 214 are made of heat-conducting materials and can conduct heat, such as metal, and more preferably aluminum. In this way, the heat released by the refrigerant channel 212 can be conducted radially inward and outward along the circumferential direction through the uniformly distributed heat conduction sheets 214, and the central wind speed of the heat dissipation pipe 213 is large, and the heat dissipation is faster.

[0040] Example two

[0041] Reference Figure 10 In this embodiment, the difference from the above-mentioned embodiment one is that the main body 211 is wound into a spiral column as a whole, and the heat dissipation pipe 213 and the heat conduction sheet 214 are no longer arranged. The refrigerant channel 212 can also be wound in a spiral shape on the wall of the main body 211 as shown in the figure.

[0042] Example three

[0043] Reference Figure 11 In this embodiment, the difference from the above-mentioned embodiment one is that the main body 211 is a hollow cylindrical shape, and the refrigerant channel 212 can be wound in a spiral shape on the wall of the main body 211.

[0044] The condenser of the utility model has the advantages of small wind resistance, high heat transfer efficiency, and no blockage, and is arranged at the rear end of the smoke machine fan, which realizes smoke exhaust and heat dissipation while having little influence on the performance of the smoke machine and almost no adverse effects. The shape and structure of the condenser are not limited to a cylindrical shape, but can also be rectangular or other shapes.

Claims

1. A refrigeration range hood, comprising a fume suction assembly (1) and a refrigeration assembly (2), the fume suction assembly (1) comprising an air inlet (111), a fan frame (12) and a fan system (13) arranged in the fan frame (12), the fan system (13) comprising a fan system input end (131) and a fan system output end (132), the air inlet (111) being in fluid communication with the fan system input end (131), the refrigeration assembly (2) comprising a condenser (21) arranged downstream of the fan system (13) and capable of dissipating heat using exhaust air at the fan system output end (132), characterized in that: The refrigeration range hood further comprises an air inlet pipe (4) capable of introducing outdoor air into the inside of the fan frame (12), the air inlet pipe (4) is in fluid communication with the fan system input end (131), a first air inlet channel is formed between the air inlet pipe (4) and the fan system input end (131), the air inlet (111) and the fan system input end (131) form a second air inlet channel, and the first air inlet channel and the second air inlet channel are selectively communicated.

2. The refrigerant oil extraction hood according to claim 1, characterized in that: The air inlet pipe (4) and the fan frame (12) are provided with a valve (5) capable of communicating or closing the first air inlet channel, the refrigeration range hood further comprises a smoke baffle (14) capable of opening or closing the air inlet (111), when the smoke baffle (14) closes the air inlet (111) to close the second air inlet channel, the valve (5) opens the first air inlet channel, when the smoke baffle (14) opens the air inlet (111) to communicate the second air inlet channel, the valve (5) closes the first air inlet channel.

3. The oil-suction refrigerating range hood according to claim 1, characterized in that: The condenser (21) comprises a main body (211) capable of conducting heat and a refrigerant channel (212) provided on the main body (211), the main body (211) is in the form of a pipe, and the refrigerant channel (212) is directly formed in the inside of the wall of the main body (211), in the oil fume flow path, the condenser (21) is arranged downstream of the range hood assembly (1), and the space surrounded by the main body (211) of the condenser (21) forms a smoke exhaust channel (2112).

4. The oil-extraction range hood according to claim 3, characterized in that: The condenser (21) further comprises a hollow heat dissipation pipe (213) capable of allowing oil fume to pass through, the heat dissipation pipe (213) is arranged inside the space surrounded by the main body (211) and is spaced apart from the main body (211), and a heat conduction sheet (214) is connected between the heat dissipation pipe (213) and the main body (211).

5. The oil-extraction range hood according to claim 3 or 4, characterized in that: The wall of the main body (211) comprises two layers of heat conduction plates (2111), and the gap between the two layers of heat conduction plates (2111) forms the refrigerant channel (212).

6. The refrigerant oil extraction hood as claimed in claim 3 wherein: The range hood assembly (1) further comprises a smoke exhaust pipe assembly, the smoke exhaust pipe assembly comprises a first smoke exhaust pipe (31) and a second smoke exhaust pipe (32), the main body (211) of the condenser (21) is arranged between the first smoke exhaust pipe (31) and the second smoke exhaust pipe (32), and the end of the first smoke exhaust pipe (31) away from the main body (211) is connected with the fan system output end (132).

7. The refrigerant oil extraction hood according to claim 6, characterized in that: The end of the second smoke exhaust pipe (32) away from the main body (211) is provided with a fireproof valve (6).

8. The oil-extraction range hood according to claim 1, characterized in that: A smoke collecting cover (11) is arranged below the fan frame (12), and the air inlet (111) is arranged on the smoke collecting cover (11).

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