Range hood

Abstract

The utility model discloses a range hood which comprises a refrigerating loop and a conveying loop which are arranged in the range hood, the refrigerating loop and the conveying loop are connected through a regenerator, the regenerator comprises a first heat exchange part and a second heat exchange part, the first heat exchange part is arranged in the refrigerating loop, and the second heat exchange part is arranged in the conveying loop. Heat exchange is carried out between the first heat exchange part and the second heat exchange part, so that cold energy in the refrigerating loop is transferred into the conveying loop; a condenser is further arranged in the refrigerating circuit, and the condenser is used for discharging heat in the refrigerating circuit so as to store cold energy in the cold accumulator; an evaporator is further arranged in the conveying loop and used for discharging cold energy in the conveying loop so as to refrigerate the external space of the range hood. By adopting the scheme, the space outside the range hood can be prevented from being occupied, and implementation and arrangement are facilitated. And compared with water heat dissipation, the cost can be reduced.

Description

Technical Field

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

[0002] The hot and stuffy kitchen is a significant pain point for users. The current solutions are divided into the following categories:

[0003] (1) Category 1:

[0004] Specifically, ① you can install a mobile air conditioner, which is a small compressor + evaporator + condenser combination unit, and the heat dissipation and exhaust need a separate pipe to the outside. ② Or, install a wall-mounted air conditioner, which requires an outdoor unit to drag an indoor unit, the same as a horizontal wall-mounted air conditioner. ③ In addition, a few manufacturers have developed kitchen air conditioners specifically for kitchen use, which are installed inside the ceiling. This type of air conditioner is divided into two solutions: integrated indoor and outdoor units and split. These solutions have a common feature, which is that holes need to be drilled in the exterior wall to discharge the heat generated by the air conditioner condenser to the outside. There are two specific solutions: one is to install the outdoor unit of the air conditioner outdoors, and the other is to connect it to the outdoors with an exhaust pipe.

[0005] However, for the above methods, ① requires the use of kitchen floor, countertop space or wall space, and the heat dissipation pipe needs to extend to the outdoors, which is very unsightly. For ②, the indoor and outdoor integrated unit solution, in order to exhaust the hot air blower, a relatively large hole needs to be opened in the wall, which is generally not allowed in real estate. For ③, the outdoor unit external installation solution, most real estates do not have an outdoor unit installation platform for kitchen air conditioners, and random installation poses a safety hazard of damaging the wall and falling objects from high altitude.

[0006] (2) Category II:

[0007] Some manufacturers combine the air conditioner with the sink and install it under the sink, so that the heat of the condenser is discharged through the sewer pipe by exchanging heat with tap water.

[0008] However, heat dissipation through tap water is costly and is a huge waste of water resources. Utility Model Content

[0009] The technical problem to be solved by the utility model is to provide a range hood in order to overcome the defects of the existing technology that the method used to cool the kitchen is difficult to implement and has high cost.

[0010] The utility model solves the above technical problems through the following technical solutions:

[0011] A range hood, comprising a refrigeration circuit and a conveying circuit arranged inside the range hood, wherein the refrigeration circuit and the conveying circuit are connected via a cold storage device.

[0012] The cold storage device includes a first heat exchange part and a second heat exchange part, wherein the first heat exchange part is arranged in the refrigeration circuit, and the second heat exchange part is arranged in the transmission circuit, and heat exchange is performed between the first heat exchange part and the second heat exchange part to transfer the cold in the refrigeration circuit to the transmission circuit;

[0013] The refrigeration circuit also has a condenser, which is used to discharge the heat in the refrigeration circuit to store cold in the cold storage device; the delivery circuit also has an evaporator, which is used to discharge the cold in the delivery circuit to cool the external space of the range hood.

[0014] In this solution, the refrigeration circuit and the delivery circuit are integrated in the range hood to avoid occupying space outside the range hood and facilitate layout. The refrigeration circuit can perform refrigeration operation, and the refrigeration circuit and the delivery circuit are connected through a cold storage device to transfer the cold in the refrigeration circuit to the delivery circuit, thereby delivering the cold to the kitchen space. The cold storage device exchanges energy through the first heat exchange part and the second heat exchange part inside. Refrigeration is achieved through the condenser in the refrigeration circuit, and cold is delivered through the evaporator in the delivery circuit, which can also reduce costs compared to heat dissipation through water.

[0015] Preferably, the refrigeration circuit further includes a compressor, and one end of the first heat exchange part, the compressor, the condenser and the other end of the first heat exchange part are connected in sequence to form a circulation loop.

[0016] In this solution, the first heat exchange part, the compressor and the condenser form a refrigeration cycle loop. The compressor can provide circulation power for the refrigerant in the refrigeration loop, so that the heat of the first heat exchange part can be discharged through the first heat exchange part to store cold energy in the cold storage device.

[0017] Preferably, the refrigeration circuit further includes an expansion valve, and the expansion valve is connected between the condenser and the other end of the first heat exchange part.

[0018] Preferably, the condenser is a wire-tube condenser or a coil-tube condenser, and the wire-tube condenser or the coil-tube condenser is arranged on the inner surface of the shell of the range hood, and the wire-tube condenser or the coil-tube condenser can perform cooling operation while the range hood is working.

[0019] In this solution, refrigeration is performed by a wire tube condenser or a coil condenser, and a fan is not required for heat dissipation. Therefore, whether the range hood is working or not, the refrigeration can work alone; and there is no fan noise during the refrigeration process. In addition, the wire tube condenser or the coil condenser is arranged on the range hood housing, and the range hood housing can be used to dissipate heat to the outside.

[0020] Preferably, the wire-tube condenser is laid on the inner surface of the front side wall of the shell of the range hood.

[0021] In this solution, the wire-tube condenser can dissipate heat through the front side wall of the shell. The front side wall is larger in size, which can improve the heat dissipation effect.

[0022] Preferably, the range hood also includes a fume blower, which is used to collect and discharge the fume; along the length direction of the range hood, the condenser is arranged on one side of the fume blower, and the heat of the condenser is taken away by the fume blower; the condenser and the fume blower can perform cooling operation when the range hood is idle.

[0023] In this solution, the range hood fan is used to dissipate heat from the condenser, and the heat in the condenser can be discharged through the original exhaust passage of the range hood, which can simplify the structure and reduce costs.

[0024] Preferably, a heat dissipation channel is provided between the condenser and the oil fume blower.

[0025] In this solution, the heat dissipation effect of the fume fan on the condenser can be improved through the heat dissipation channel.

[0026] Preferably, the compressor is arranged at the top of the shell of the range hood; the range hood also includes a range hood fan, and along the length direction of the range hood, the cold storage device is arranged on one side of the range hood fan; and when the condenser takes away heat through the range hood fan, the condenser and the cold storage device are arranged on both sides of the range hood fan.

[0027] In this solution, by adopting the above arrangement, the internal space of the range hood can be reasonably utilized, making the overall structure compact, which is conducive to reducing the size of the range hood.

[0028] Preferably, the delivery loop further includes a water pump, and one end of the second heat exchange part, the water pump, the evaporator and the other end of the second heat exchange part are sequentially connected to form a circulation loop;

[0029] The range hood further comprises a delivery fan, which is located at one side of the evaporator and is used for blowing the cold energy of the evaporator to the external space of the range hood.

[0030] In this solution, the water pump can provide power for the delivery circuit, and the delivery fan can deliver the cold energy of the evaporator to the external space of the range hood, thereby improving the refrigeration effect.

[0031] Preferably, the delivery circuit further includes a one-way valve, and the one-way valve is connected between the evaporator and the other end of the second heat exchange part.

[0032] Preferably, the evaporator and the conveying fan are arranged at the top of the shell of the range hood; along the thickness direction of the range hood, the evaporator is located on one side of the conveying fan, and the front side wall of the shell of the range hood is provided with an air outlet, and the outlet of the conveying fan is opposite to the air outlet.

[0033] In this solution, by arranging an air outlet on the front side wall of the shell, cold air can be supplied to the user, thereby improving the air supply effect.

[0034] Preferably, the range hood comprises a shell and a bracket arranged in the shell, and the bracket comprises a lower frame and an upper frame connected to the lower frame;

[0035] The range hood further comprises a range hood fan, a conveying fan and a compressor, wherein the range hood fan is arranged at the middle part of the lower frame, and an air outlet passage of the range hood fan passes through the upper frame and extends upward; the evaporator and the conveying fan are arranged at one side of the upper frame and are arranged in sequence along the thickness direction of the range hood; the compressor is arranged at the other side of the upper frame; the cold storage device is connected to the side wall of one side of the lower frame;

[0036] When the condenser of the range hood is a wire tube condenser or a coil condenser, the wire tube condenser or the coil condenser is connected to the inner surface of the shell and is directly opposite to the position of the range hood fan;

[0037] When the condenser of the range hood takes away heat through the range hood fan, the condenser is connected to the side wall on the other side of the lower frame.

[0038] In this solution, by adopting the above arrangement, the bracket can be used as a supporting component and a mounting component for the installation of various components, so that the internal space of the range hood can be reasonably utilized, making the overall structure compact and helping to reduce the size of the range hood.

[0039] The positive and progressive effect of the utility model is that the refrigeration circuit and the delivery circuit are integrated in the range hood to avoid occupying the space outside the range hood, which is convenient for implementation. The refrigeration circuit can perform refrigeration operation, and the refrigeration circuit and the delivery circuit are connected through a cold storage device to transfer the cold in the refrigeration circuit to the delivery circuit, thereby delivering the cold to the kitchen space. Among them, the cold storage device exchanges energy through the first heat exchange part and the second heat exchange part inside. Refrigeration is achieved through the condenser in the refrigeration circuit, and cold is delivered through the evaporator in the delivery circuit, which can also reduce costs compared to heat dissipation through water. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of the principle of the refrigeration circuit and the conveying circuit of the range hood provided in Example 1 of the utility model;

[0041] Figure 2 A schematic diagram of the internal structure of the range hood provided in Example 1 of the utility model from one viewing angle, which is the viewing angle when a user is facing the range hood directly;

[0042] Figure 3 A schematic diagram of the internal structure of the range hood provided in Embodiment 1 of the utility model from another perspective;

[0043] Figure 4a A schematic diagram of the use process of the range hood provided in Example 1 of the utility model;

[0044] Figure 4b A schematic diagram of the use process of the range hood provided in Example 1 of the utility model;

[0045] Figure 5 A schematic diagram of the principle of the refrigeration circuit and the conveying circuit of the range hood provided in Example 2 of the utility model;

[0046] Figure 6 A schematic diagram of a viewing angle of the internal structure of a range hood provided in Embodiment 2 of the utility model, which is the viewing angle when a user is facing the range hood directly;

[0047] Figure 7 A schematic diagram of the internal structure of the range hood provided in Embodiment 2 of the utility model from another perspective;

[0048] Figure 8 This is a schematic diagram of the use process of the range hood provided in Example 2 of the utility model.

[0049] Description of Reference Numerals

[0050] Range hood 1, refrigeration circuit 10, compressor 11, condenser 12, expansion valve 13, range hood fan 14, conveying circuit 20, water pump 21, evaporator 22, conveying fan 23, one-way valve 24, cold storage device 30, first heat exchange part 31, second heat exchange part 32, insulation layer 33, shell 41, air outlet 42, lower frame 51, upper frame 52, heat dissipation channel 53, length direction L, thickness direction H. DETAILED DESCRIPTION

[0051] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0052] The utility model embodiment provides a smoke extractor 1, such as Figure 1-Figure 8As shown, the range hood 1 includes a refrigeration circuit 10 and a delivery circuit 20 arranged inside the range hood 1, the refrigeration circuit 10 and the delivery circuit 20 are connected through a cold storage device 30, the cold storage device 30 includes a first heat exchange part 31 and a second heat exchange part 32, the first heat exchange part 31 is arranged in the refrigeration circuit 10, and the second heat exchange part 32 is arranged in the delivery circuit 20, and heat exchange is performed between the first heat exchange part 31 and the second heat exchange part 32 to transfer the cold in the refrigeration circuit 10 to the delivery circuit 20; the refrigeration circuit 10 also has a condenser 12, the condenser 12 is used to discharge the heat in the refrigeration circuit 10 to reserve cold in the cold storage device 30; the delivery circuit 20 also has an evaporator 22, the evaporator 22 is used to discharge the cold in the delivery circuit 20 to cool the external space of the range hood 1.

[0053] The refrigeration circuit 10 and the delivery circuit 20 are integrated in the range hood 1 to avoid occupying space outside the range hood 1, which is convenient for layout. The refrigeration circuit 10 can perform refrigeration operation. The refrigeration circuit 10 and the delivery circuit 20 are connected through the cold storage device 30 to transfer the cold in the refrigeration circuit 10 to the delivery circuit 20, thereby delivering the cold to the kitchen space. The cold storage device 30 exchanges energy through the first heat exchange part 31 and the second heat exchange part 32 inside. Refrigeration is achieved through the condenser 12 in the refrigeration circuit 10, and cold is delivered through the evaporator 22 in the delivery circuit 20. Compared with heat dissipation through water, the cost can also be reduced.

[0054] In a specific implementation, the smoke extractor 1 includes a shell 41, and the shell 41 has a chamber for accommodating various components. The various components in the above refrigeration circuit 10, the delivery circuit 20 and the cold storage device 30 can be arranged in the chamber of the shell 41. The components can be connected by means of pipes or the like to form a circulation loop, thereby forming a smoke extractor 1 with a refrigeration function, and the smoke extractor 1 can still have a conventional range fumes extraction function. The smoke extractor 1 in the utility model does not need to occupy the kitchen floor, countertop space or wall space, and does not require additional holes for heat dissipation, so it is easy to install and implement. In addition, the utility model combines refrigeration with the smoke extractor 1, does not need to borrow the sink space, and uses tap water to dissipate heat, which is relatively low in cost. In addition, the height of the smoke extractor 1 is generally above the stove, and the delivery circuit 20 is set on the smoke extractor 1 to output cold capacity, which can be cooled above the human body to form a better cooling effect.

[0055] like Figure 1 and Figure 5As shown, the refrigeration circuit 10 further includes a compressor 11, and one end of the first heat exchange part 31, the compressor 11, the condenser 12 and the other end of the first heat exchange part 31 are connected in sequence to form a circulation loop. The first heat exchange part 31, the compressor 11 and the condenser 12 form a refrigeration circulation loop, and the compressor 11 can provide circulation power for the refrigerant in the refrigeration circuit 10, so that the heat of the first heat exchange part 31 can be discharged through the first heat exchange part 31 to reserve cold capacity in the cold storage device 30.

[0056] like Figure 1 and Figure 5 As shown, the refrigeration circuit 10 further includes an expansion valve 13 , which is connected between the condenser 12 and the other end of the first heat exchange portion 31 .

[0057] Further, one end of the first heat exchange part 31, the compressor 11, the condenser 12, the expansion valve 13 and the other end of the first heat exchange part 31 are connected in sequence.

[0058] like Figure 1 and Figure 5 As shown, the delivery circuit 20 also includes a water pump 21, one end of the second heat exchange part 32, the water pump 21, the evaporator 22 and the other end of the second heat exchange part 32 are sequentially connected to form a circulation circuit; the smoke extractor 1 also includes a delivery fan 23, which is located on one side of the evaporator 22 and is used to blow the cold energy of the evaporator 22 to the external space of the smoke extractor 1. The water pump 21 can provide power for the delivery circuit 20, and the delivery fan 23 can deliver the cold energy of the evaporator 22 to the external space of the smoke extractor 1, thereby improving the refrigeration effect. In addition, as Figure 2 and Figure 6 As shown, the range hood 1 further comprises an oil fume blower 14, which is used to collect and discharge oil fume; the conveying circuit 20 and the range hood hood 1 work independently to absorb oil fume to avoid mutual influence, thereby achieving refrigeration while absorbing oil fume.

[0059] In specific implementation, the water pump 21 drives the heat exchange medium (such as ethylene glycol) through the cold storage device 30. After the cold storage device 30 obtains cold energy, it goes to the evaporator 22 and passes through the delivery fan 23 to blow the cold energy to the kitchen, thereby realizing kitchen refrigeration.

[0060] like Figure 1 As shown, the delivery circuit 20 further includes a one-way valve 24, which is connected between the evaporator 22 and the other end of the second heat exchange part 32. Further, one end of the second heat exchange part 32, the water pump 21, the evaporator 22, the one-way valve 24 and the other end of the second heat exchange part 32 are connected in sequence.

[0061] In specific implementation, the phase change ice storage material in the cold storage device 30 can be water, with a usable weight of 10Kg, and the stored cold capacity can meet the cooling time of 1.5 hours. The kitchen is mainly used for food preparation and cleaning. The actual cooking time for each meal is 30-45 minutes, and this cooling time can meet the cooling capacity demand for the whole day. In addition, the latent heat of ice is 334KJ / Kg, while the specific heat capacity of water is only 4.2KJ / (Kg.℃). The demand for water is greatly reduced, and the water in this embodiment is reused and will not be consumed, which is conducive to low carbon and environmental protection.

[0062] In specific implementation, the condenser 12 may take various forms, and some feasible implementations will be provided in the following embodiments.

[0063] Example 1

[0064] like Figure 1 , Figure 2 and Figure 3 As shown, the condenser 12 is a wire tube condenser 12 or a coil condenser 12, which is arranged on the inner surface of the housing 41 of the smoke extractor 1, and the wire tube condenser 12 or the coil condenser 12 can perform refrigeration operation while the smoke extractor 1 is working. Refrigeration is performed by the wire tube condenser 12 or the coil condenser 12, and no fan heat dissipation is required, so a single working condition is achieved. Therefore, whether the smoke extractor 1 is working or not, the refrigeration can work alone; and there is no fan noise during the refrigeration process. In addition, the wire tube condenser 12 or the coil condenser 12 is arranged on the housing 41 of the smoke extractor 1, and the housing 41 of the smoke extractor 1 can be used to dissipate heat outward.

[0065] like Figure 2 and Figure 3 As shown, the wire-tube condenser 12 is laid on the inner surface of the front side wall of the housing 41 of the smoke extractor 1. The wire-tube condenser 12 can dissipate heat through the front side wall of the housing 41. The front side wall is relatively large, which can improve the heat dissipation effect.

[0066] like Figure 2 and Figure 3 As shown, the wire-tube condenser 12 is in the form of a plate-like structure, and the wire-tube condenser 12 is relatively thin and can be connected to the inner surface of the front side wall of the shell 41. Compared with other side walls of the shell 41, the space around the front side wall is large, which is convenient for heat dissipation of the condenser 12.

[0067] like Figure 4a As shown, when the range hood 1 is in the cooling mode, the control system in the range hood 1 can determine whether the refrigeration circuit 10 needs to supplement the cooling capacity;

[0068] If no additional cooling capacity is required, the range hood 1 is controlled to be in a standby state;

[0069] If additional cooling capacity is required, the refrigeration system (refrigeration circuit 10) is controlled to operate until the cooling capacity is supplemented and the system is in a standby state.

[0070] like Figure 4b As shown, when the range hood 1 receives an air-conditioning-on instruction, the cold transport system (transport loop 20) is controlled to operate to cool down the kitchen space.

[0071] When the range hood 1 receives the instruction to turn off the air conditioner, the cold transport system (transport loop 20) is controlled to be turned off.

[0072] In specific implementation, it is preferred that when the user does not use the kitchen or the range hood 1 is in an idle state (generally at night), the range hood 1 is controlled to enter the cooling mode. The compressor 11 works, and the heat in the wire-tube condenser 12 or the coil condenser 12 is discharged through the fan housing 41, and the cold is stored in the cold storage device 30. In addition, the present embodiment can use a non-air-conditioning compressor 11, and the compressor 11 can cool when the user is not in the kitchen, and its noise itself is low, and the impact on the user is small.

[0073] Example 2

[0074] like Figure 5 , Figure 6 and Figure 7 As shown, along the length direction L of the hood 1, the condenser 12 is arranged on one side of the oil fume fan 14, and the heat of the condenser 12 is taken away by the oil fume fan 14; the condenser 12 and the oil fume fan 14 can perform cooling operation when the hood 1 is idle. The oil fume fan 14 of the hood 1 is used to dissipate heat from the condenser 12, and the heat in the condenser 12 can be discharged through the original exhaust channel of the hood 1, realizing dual working conditions, simplifying the structure, and reducing costs. In specific implementation, the condenser 12 can be an air-cooled condenser 12.

[0075] Preferably, a heat dissipation channel 53 is provided between the condenser 12 and the oil fume fan 14. Through the heat dissipation channel 53, the heat dissipation effect of the oil fume fan 14 on the condenser 12 can be improved.

[0076] When cooking is not in progress, the air duct of the range hood fan 14 is used to dissipate heat from the air conditioning condenser 12 , thereby achieving refrigeration of the refrigeration circuit 10 . When the range hood 1 is working, the kitchen is cooled by the cold storage device 30 .

[0077] like Figure 8 As shown, when the range hood 1 is in standby mode, the control system in the range hood 1 can determine whether the refrigeration circuit 10 needs to supplement cooling capacity;

[0078] If no additional cooling capacity is required, the range hood 1 is controlled to be in a waiting state;

[0079] If additional cooling capacity is required, it is determined whether the range hood 1 is idle;

[0080] If the range hood 1 is not in an idle state, the range hood 1 is controlled to be in a waiting state;

[0081] If the range hood 1 is in an idle state, the refrigeration system (refrigeration circuit 10) is controlled to operate, and then it is determined whether additional cooling capacity is needed, and the cycle is repeated in sequence.

[0082] like Figure 8 As shown, when the range hood 1 is in standby mode, if the range hood 1 receives an instruction to turn on the air conditioner (deliver cooling capacity), it is determined whether the range hood 1 is idle;

[0083] If the range hood 1 is in an idle state, the cold transport system (transport loop 20) is controlled to work, and after the transport loop 20 has completed its work, the air conditioner is turned off and the machine enters the standby mode again;

[0084] If the range hood 1 is not in an idle state, the refrigeration system (refrigeration loop 10) and the cold delivery system (transmission loop 20) are controlled to work simultaneously. After the transmission loop 20 has finished working, the air conditioner is turned off and the standby mode is re-entered.

[0085] In this embodiment, when the range hood 1 is idle, the refrigeration circuit 10 generates cold and stores it in the cold storage device 30. When cooling is needed, the delivery circuit 20 realizes cooling of the kitchen space. This solves the problem of air duct conflict when the air conditioner heats up and exhausts oil fumes at the same time, and can absorb oil fumes while cooling. In addition, this embodiment uses the range hood 1 to dissipate heat, but there is no need to purify the oil fumes, which is low in cost and has no subsequent maintenance requirements.

[0086] For the smoke extractor 1 of the above two embodiments, each component can be arranged inside the housing 41 of the smoke extractor 1. Figure 2 , Figure 3 and Figure 6 , Figure 7 Provide further explanation.

[0087] like Figure 2 and Figure 6 As shown, the compressor 11 is arranged at the top of the shell 41 of the range hood 1, and the evaporator 22 and the conveying fan 23 are also arranged at the top of the shell 41 of the range hood 1; an exhaust port of the fume fan 14 is provided in the middle part of the top of the shell 41, the compressor 11 is arranged on the right side of the exhaust port, and the evaporator 22 and the conveying fan 23 are arranged on the left side of the exhaust port.

[0088] like Figure 3 and Figure 7As shown, along the thickness direction H of the smoke extractor 1 , the evaporator 22 is located on one side of the conveying fan 23 , an air outlet 42 is provided on the front side wall of the housing 41 of the smoke extractor 1 , and the outlet of the conveying fan 23 is opposite to the air outlet 42 .

[0089] like Figure 2 and Figure 6 As shown, along the length direction L of the smoke extractor 1 , the cold storage device 30 is arranged on one side of the oil fume blower 14 . Further, the cold storage device 30 is arranged on the left side of the oil fume blower 14 .

[0090] like Figure 2 As shown, the wire tube condenser 12 or the coil condenser 12 is connected to the inner surface of the front side wall of the shell 41 and is directly opposite to the position of the oil fume fan 14.

[0091] like Figure 6 As shown, when the condenser 12 takes away heat through the oil fume fan 14 , the condenser 12 and the cold storage device 30 are arranged on both sides of the oil fume fan 14 .

[0092] In specific implementation, the installation and arrangement of each device can be achieved by building a bracket inside the housing 41. Figure 2 and Figure 6 As shown, the bracket includes a lower frame 51 and an upper frame 52 connected to the lower frame 51 .

[0093] The main part of the oil fume fan 14 is arranged in the middle part of the lower frame 51, and the air outlet passage of the oil fume fan 14 extends upward through the upper frame 52. Along the length direction L of the smoke extractor 1, the two ends of the upper frame 52 extend to both sides respectively, and the evaporator 22 and the conveying fan 23 are arranged on the left extension part of the upper frame 52 and arranged in sequence along the thickness direction H of the smoke extractor 1; the compressor 11 is arranged on the right extension part of the upper frame 52.

[0094] The left extension part and the side wall of the lower frame 51 form a storage space for the cold storage device 30, and the cold storage device 30 is connected to the side wall of the lower frame 51. Furthermore, the outside of the cold storage device 30 is also provided with a heat preservation layer 33, and the heat preservation layer 33 is connected to the left side wall of the lower frame 51.

[0095] like Figure 2 As shown, when the condenser 12 of the range hood 1 is a wire-tube condenser 12 or a coil-tube condenser 12 , the wire-tube condenser 12 or the coil-tube condenser 12 is connected to the inner surface of the shell 41 and is directly opposite to the position of the oil fume fan 14 .

[0096] like Figure 6As shown, when the condenser 12 of the range hood 1 takes away heat through the oil fume fan 14, the condenser 12 is connected to the side wall on the other side of the lower frame 51. An accommodating space for the condenser 12 is formed between the right extension portion and the side wall on the other side of the lower frame 51, and a heat dissipation channel 53 is provided on the right side wall of the lower frame 51.

[0097] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A range hood, characterized in that: The range hood comprises a refrigeration circuit and a conveying circuit arranged inside the range hood, wherein the refrigeration circuit and the conveying circuit are connected via a cold storage device. The cold storage device includes a first heat exchange part and a second heat exchange part, wherein the first heat exchange part is arranged in the refrigeration circuit, and the second heat exchange part is arranged in the transmission circuit, and heat exchange is performed between the first heat exchange part and the second heat exchange part to transfer the cold in the refrigeration circuit to the transmission circuit; The refrigeration circuit also has a condenser, which is used to discharge the heat in the refrigeration circuit to store cold in the cold storage device; the delivery circuit also has an evaporator, which is used to discharge the cold in the delivery circuit to cool the external space of the range hood.

2. The range hood according to claim 1, characterized in that: The refrigeration circuit further includes a compressor, and one end of the first heat exchange part, the compressor, the condenser, and the other end of the first heat exchange part are sequentially connected to form a circulation circuit.

3. The range hood according to claim 2, characterized in that: The condenser is a wire tube condenser or a coil condenser, which is arranged on the inner surface of the shell of the range hood and can perform cooling operation while the range hood is working.

4. The range hood according to claim 3, characterized in that: The wire-tube condenser is laid on the inner surface of the front side wall of the shell of the range hood.

5. The range hood according to claim 2, characterized in that: The range hood also includes a fume blower, which is used to collect and discharge the fume; along the length direction of the range hood, the condenser is arranged on one side of the fume blower, and the heat of the condenser is taken away by the fume blower; the condenser and the fume blower can perform cooling operation when the range hood is idle.

6. The range hood according to claim 5, characterized in that: A heat dissipation channel is provided between the condenser and the oil fume blower.

7. The range hood according to claim 2, characterized in that: The compressor is arranged at the top of the housing of the range hood; the range hood further comprises a range hood fan, and the cold storage device is arranged at one side of the range hood fan along the length direction of the range hood; When the condenser takes away heat through the oil fume fan, the condenser and the cold storage device are arranged on both sides of the oil fume fan.

8. The range hood according to any one of claims 1 to 7, characterized in that: The delivery loop further includes a water pump, and one end of the second heat exchange part, the water pump, the evaporator and the other end of the second heat exchange part are sequentially connected to form a circulation loop; The range hood further comprises a delivery fan, which is located at one side of the evaporator and is used for blowing the cold energy of the evaporator to the external space of the range hood.

9. The range hood according to claim 8, characterized in that: The evaporator and the conveying fan are arranged at the top of the shell of the range hood; along the thickness direction of the range hood, the evaporator is located on one side of the conveying fan, and the front side wall of the shell of the range hood is provided with an air outlet, and the outlet of the conveying fan is opposite to the air outlet.

10. The range hood according to claim 1, characterized in that: The range hood comprises a shell and a bracket arranged in the shell, and the bracket comprises a lower frame and an upper frame connected to the lower frame; The range hood further comprises a range hood fan, a conveying fan and a compressor, wherein the range hood fan is arranged at the middle part of the lower frame, and an air outlet passage of the range hood fan passes through the upper frame and extends upward; the evaporator and the conveying fan are arranged at one side of the upper frame and are arranged in sequence along the thickness direction of the range hood; the compressor is arranged at the other side of the upper frame; the cold storage device is connected to the side wall of one side of the lower frame; When the condenser of the range hood is a wire tube condenser or a coil condenser, the wire tube condenser or the coil condenser is connected to the inner surface of the shell and is directly opposite to the position of the range hood fan; When the condenser of the range hood takes away heat through the range hood fan, the condenser is connected to the side wall on the other side of the lower frame.

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