Refrigeration type range hood

Abstract

An oil smoke suction module and a refrigeration module are integrated in a machine shell, the refrigeration module comprises a compressor, a condenser and a first evaporator, an inlet of a first three-way valve is communicated with an outlet of the condenser, and a refrigerant pipeline between a first outlet of the first three-way valve and a first inlet of a second three-way valve forms a first parallel branch; a first evaporator is arranged on a first parallel branch, an outlet of a second three-way valve is communicated with an inlet of a compressor, a second parallel branch and a third parallel branch which are connected with the first parallel branch in parallel are arranged between a second outlet of the first three-way valve and a second inlet of the second three-way valve, and a second evaporator is installed on the second parallel branch. And a third evaporator is mounted on the third parallel branch. According to the refrigeration type range hood, an existing refrigeration system flow path is improved, a flow path with adjustable flow is added to be connected with an original flow path in parallel, meanwhile, an evaporator for fresh keeping and an evaporator for cold storage are added, and the functions of fresh keeping and cold storage are achieved by means of a new control system.

Description

Technical Field

[0001] This utility model relates to a range hood, and more particularly to a refrigerated range hood. Background Technology

[0002] Integrated kitchen appliances are a growing trend in the current kitchen appliance market. Modern range hoods are increasingly moving towards integration, allowing them to work in conjunction with cooktops, steam ovens, or other cooking appliances. Some models even integrate cooling or steam oven functions. Integrated kitchen appliances enhance functionality without increasing the product's size, achieving multi-functionality, reducing the number of appliances required, saving kitchen space, maintaining a clean and aesthetically pleasing appearance, and improving the user's cooking experience. Currently, integrated kitchen appliances on the market mainly follow two directions: one is function-only integration, where multiple appliances are intelligently linked and share functions under a single operating system; the other is structural and functional integration, where various functions are integrated into a single product, such as a steam oven, a steam oven / steam oven, and a cooling range hood. Integrated kitchen appliances are currently very popular with users, but there are still many more functions that can be integrated to meet the growing needs of users and improve product competitiveness. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a refrigerated range hood with preservation and refrigeration functions, in light of the above-mentioned existing technology.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a refrigeration range hood, including a casing, in which a fume extraction module and a refrigeration module are integrated. The refrigeration module includes a compressor, a condenser, and a first evaporator. The compressor, condenser, and first evaporator are connected by a refrigerant pipeline. The refrigeration module is characterized by further including a first three-way valve and a second three-way valve. The inlet of the first three-way valve is connected to the outlet of the condenser. The refrigerant pipeline between the first outlet of the first three-way valve and the first inlet of the second three-way valve forms a first parallel branch. The first evaporator is located on the first parallel branch. The outlet of the second three-way valve is connected to the inlet of the compressor. A second parallel branch and a third parallel branch are provided between the second outlet of the first three-way valve and the second inlet of the second three-way valve, in parallel with the first parallel branch. A second evaporator is installed on the second parallel branch, and a third evaporator is installed on the third parallel branch.

[0005] Preferably, the system further includes a third three-way valve and a three-way connecting pipe. The inlet of the third three-way valve is connected to the second outlet of the first three-way valve, the first outlet of the third three-way valve is connected to the first parallel branch, the second outlet of the third three-way valve is connected to the second parallel branch, the first inlet of the three-way connecting pipe is connected to the outlet of the first parallel branch, the second inlet of the three-way connecting pipe is connected to the outlet of the second parallel branch, and the outlet of the three-way connecting pipe is connected to the second inlet of the second three-way valve. The refrigerant flow rate entering the second and third evaporators can be adjusted through the third three-way valve.

[0006] Preferably, a dryer filter is installed on the refrigerant pipeline between the second outlet of the first three-way valve and the inlet of the third three-way valve.

[0007] Further preferably, a first capillary tube is installed on the second parallel branch between the first outlet of the third three-way valve and the inlet of the second evaporator, and a second capillary tube is installed on the third parallel branch between the second outlet of the third three-way valve and the inlet of the third evaporator.

[0008] A further preferred embodiment is that a throttling device is installed on the first parallel branch between the first outlet of the first three-way valve and the inlet of the first evaporator.

[0009] In order to effectively dissipate heat from the condenser and allow the cold air from the indoor unit to be blown out smoothly, the system also includes an indoor unit fan and a cooling fan. The indoor unit fan and the evaporator constitute the indoor unit module, and the cooling fan and the condenser constitute the cooling module.

[0010] To regulate the refrigerant flow in each parallel branch, the system also includes controllers that control the flow of the first, second, and third three-way valves, as well as the compressor, indoor unit fan, and cooling fan. In this way, the controllers can also control the operating status of the refrigeration module.

[0011] The indoor unit module and the heat dissipation module can be arranged in several different ways. Preferably, the fume extraction module includes a fume extraction fan, and the indoor unit module and the heat dissipation module are located above the fume extraction fan. An indoor unit air outlet is located at the upper part of the front of the casing, and the air outlet of the heat dissipation fan is connected to the air inlet of the fume extraction fan. This arrangement allows for a shorter air duct between the air outlets of both the indoor unit and the heat dissipation fan.

[0012] To make the installation positions of the fresh-keeping chamber and the refrigeration chamber more reasonable, the housing includes an upper box and a smoke inlet chamber. The fume extractor is located inside the upper box, the smoke inlet chamber is located at the lower rear side of the upper box, and the fresh-keeping chamber and the refrigeration chamber are installed on the front side of the smoke inlet chamber.

[0013] In a further preferred embodiment, the preservation chamber and the refrigeration chamber are arranged adjacent to each other on the left and right.

[0014] Compared with existing technologies, the advantages of this utility model are as follows: This refrigeration range hood improves the flow path of the existing refrigeration system by adding an adjustable flow path in parallel with the original flow path. It also adds an evaporator for preservation and an evaporator for refrigeration. The preservation and refrigeration system directly utilizes the compressor and condenser of the refrigeration system, adding preservation and refrigeration functions with only a small increase in cost. Furthermore, by improving the overall control logic, the on / off logic and normal operation logic of the fume extraction, refrigeration, and preservation / refrigeration functions are clearly defined, ensuring that these functions do not interfere with each other during operation. Attached Figure Description

[0015] Figure 1 This is a front view of the range hood according to an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 The diagram shown is a schematic of the internal structure of the range hood.

[0017] Figure 3 for Figure 1 The side view of the range hood shown;

[0018] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the range hood.

[0019] Figure 5 This is a connection diagram of the refrigeration module, preservation module, and cold storage module of the range hood according to an embodiment of the present utility model.

[0020] Figure 6 This is a flowchart of the control method for a range hood according to an embodiment of the present invention. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4As shown, the refrigerated range hood of this embodiment includes a housing 1, which integrates a fume extraction module and a refrigeration module. The housing 1 includes an upper casing 101 and a smoke inlet chamber 102. The fume extraction module includes a fume extraction fan 13, which is located inside the upper casing 101. The smoke inlet chamber 102 is located at the lower rear side of the upper casing 101. Under the suction of the fume extraction fan 13, fumes are drawn into the smoke inlet chamber 102 from the smoke inlet 105, pass through the fume passage 106 inside the upper casing 101, and are finally discharged outward through the exhaust port 107. A fresh-keeping chamber 103 and a refrigeration chamber 104 are installed on the front side of the smoke inlet chamber 102. The fresh-keeping chamber 103 and the refrigeration chamber 104 are located above the smoke inlet 105 and arranged adjacent to each other on the left and right.

[0023] The refrigeration module includes a compressor 2, an indoor unit module, and a heat dissipation module. The indoor unit module includes an indoor unit fan 11 and a first evaporator 41, and the heat dissipation module includes a cooling fan 12 and a condenser 3. In this embodiment, the indoor unit module and the heat dissipation module are located above the range hood fan 13. An indoor unit air outlet 14 is opened at the upper part of the front of the casing 1, through which cold air is blown out. The air outlet of the cooling fan 12 is connected to the air inlet of the range hood fan 13, and the heat from the condenser 3 is discharged to the outside through the range hood fan 13.

[0024] like Figure 5 As shown, compressor 2, condenser 3, and first evaporator 41 are connected by refrigerant piping. The inlet of first three-way valve 51 is connected to the outlet of condenser 3. The refrigerant piping between the first outlet of first three-way valve 51 and the first inlet of second three-way valve 52 forms a first parallel branch 61. First evaporator 41 is located on first parallel branch 61. A throttling device 10 is installed on first parallel branch 61 between the first outlet of first three-way valve 51 and the inlet of first evaporator 41. The outlet of second three-way valve 52 is connected to the inlet of compressor 2. A second parallel branch 62 and a third parallel branch 63 are provided between the second outlet of first three-way valve 51 and the second inlet of second three-way valve 52, which are connected in parallel with first parallel branch 61, thus adding an A-direction flow path. Second evaporator 42 is installed on second parallel branch 62, and third evaporator 43 is installed on third parallel branch 63. Second evaporator 42 is used for preservation, and third evaporator 43 is used for refrigeration. The third three-way valve 53 is a solenoid valve. The inlet of the third three-way valve 53 is connected to the second outlet of the first three-way valve 51. The first outlet of the third three-way valve 53 is connected to the first parallel branch 61, and the second outlet of the third three-way valve 53 is connected to the second parallel branch 62. The first inlet of the three-way connecting pipe 7 is connected to the outlet of the first parallel branch 61, the second inlet of the three-way connecting pipe 7 is connected to the outlet of the second parallel branch 62, and the outlet of the three-way connecting pipe 7 is connected to the second inlet of the second three-way valve 52.

[0025] Additionally, a dryer filter 8 is installed on the refrigerant line between the second outlet of the first three-way valve 51 and the inlet of the third three-way valve 53. A first capillary tube 91 is installed on the second parallel branch 62 between the first outlet of the third three-way valve 53 and the inlet of the second evaporator 42, and a second capillary tube 92 is installed on the third parallel branch 63 between the second outlet of the third three-way valve 53 and the inlet of the third evaporator 43.

[0026] The flow rates of the first three-way valve 51, the second three-way valve 52, and the third three-way valve 53 are controlled by a controller. The controller can also control the operating status of the compressor 2, the indoor unit fan 11, and the cooling fan 12.

[0027] like Figure 6 As shown, the control logic of this refrigerated range hood is as follows:

[0028] After the machine is powered on, the preservation and refrigeration function starts working directly. The inverter compressor runs at a low frequency to maintain the normal operation of the preservation and refrigeration function while reducing power consumption. Only the A-direction flow path of the first three-way valve 51 and the second three-way valve 52 is connected, while the B-direction flow path is closed. The indoor unit fan 11 and the cooling fan 12 are both in the off state.

[0029] When the refrigeration function is detected to be activated, the first three-way valve 51 and the second three-way valve 52 begin to adjust and regulate the flow rate, directing the flow rate to direction B. The variable frequency compressor adjusts its operating frequency to meet the refrigeration requirements. The indoor unit fan 11 and the cooling fan 12 are activated, and the preservation and refrigeration functions operate normally at the same time.

[0030] When the refrigeration function is detected to be off, the first three-way valve 51 and the second three-way valve 52 begin to adjust and regulate the flow rate, with only the A-way flow path open and the B-way flow path closed. The variable frequency compressor adjusts its operating frequency to meet the freshness preservation and refrigeration functions, and the indoor unit fan 11 and the cooling fan 12 are turned off.

[0031] Turning the fume extraction function on or off does not interfere with the cooling and preservation / refrigeration functions.

[0032] Therefore, by improving the control logic of the whole machine, clarifying the on / off logic and normal operation logic of the fume extraction, cooling and preservation functions, the fume extraction, cooling and preservation functions can be made to operate without interference with each other.

[0033] This embodiment adds an evaporator for the refrigeration module and an evaporator for the preservation module to the existing refrigeration range hood, along with matching piping, the necessary three-way valves and solenoid valves, and a corresponding control system. This allows the refrigeration range hood to add preservation and refrigeration functions. It integrates three completely different product functions—fume extraction, refrigeration, and preservation—into a single product, simplifying the process and reducing hardware duplication and redundancy while ensuring the normal operation of each function, thereby improving space utilization.

[0034] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A refrigerated range hood, comprising a housing (1), wherein a fume extraction module and a refrigeration module are integrated within the housing (1), the refrigeration module comprising a compressor (2), a condenser (3), and a first evaporator (41), wherein the compressor (2), the condenser (3), and the first evaporator (41) are connected by refrigerant pipelines, characterized in that: It also includes a first three-way valve (51) and a second three-way valve (52). The inlet of the first three-way valve (51) is connected to the outlet of the condenser (3). The refrigerant pipeline between the first outlet of the first three-way valve (51) and the first inlet of the second three-way valve (52) forms a first parallel branch (61). The first evaporator (41) is installed on the first parallel branch (61). The outlet of the second three-way valve (52) is connected to the inlet of the compressor (2). A second parallel branch (62) and a third parallel branch (63) are provided between the second outlet of the first three-way valve (51) and the second inlet of the second three-way valve (52) and are connected in parallel with the first parallel branch (61). A second evaporator (42) is installed on the second parallel branch (62), and a third evaporator (43) is installed on the third parallel branch (63).

2. The refrigerated range hood according to claim 1, characterized in that: It also includes a third three-way valve (53) and a three-way connecting pipe (7). The inlet of the third three-way valve (53) is connected to the second outlet of the first three-way valve (51). The first outlet of the third three-way valve (53) is connected to the first parallel branch (61). The second outlet of the third three-way valve (53) is connected to the second parallel branch (62). The first inlet of the three-way connecting pipe (7) is connected to the outlet of the first parallel branch (61). The second inlet of the three-way connecting pipe (7) is connected to the outlet of the second parallel branch (62). The outlet of the three-way connecting pipe (7) is connected to the second inlet of the second three-way valve (52).

3. The refrigerated range hood according to claim 2, characterized in that: A dryer filter (8) is installed on the refrigerant line between the second outlet of the first three-way valve (51) and the inlet of the third three-way valve (53).

4. The refrigerated range hood according to claim 2, characterized in that: A first capillary tube (91) is installed on the second parallel branch (62) between the first outlet of the third three-way valve (53) and the inlet of the second evaporator (42), and a second capillary tube (92) is installed on the third parallel branch (63) between the second outlet of the third three-way valve (53) and the inlet of the third evaporator (43).

5. The refrigerated range hood according to claim 1, characterized in that: A throttling device (10) is installed on the first parallel branch (61) between the first outlet of the first three-way valve (51) and the inlet of the first evaporator (41).

6. The refrigerated range hood according to claim 1, characterized in that: It also includes an indoor unit fan (11) and a cooling fan (12), wherein the indoor unit fan (11) and the first evaporator (41) constitute an indoor unit module, and the cooling fan (12) and the condenser (3) constitute a cooling module.

7. The refrigerated range hood according to claim 6, characterized in that: It also includes controllers for controlling the flow of the first three-way valve (51), the second three-way valve (52) and the third three-way valve (53) as well as for controlling the compressor (2), the indoor unit fan (11) and the cooling fan (12).

8. The refrigerated range hood according to claim 6, characterized in that: The fume extraction module includes a fume extraction fan (13), the indoor unit module and the heat dissipation module are located above the fume extraction fan (13), the upper part of the front of the casing (1) has an indoor unit air outlet (14), and the air outlet of the heat dissipation fan (12) is connected to the air inlet of the fume extraction fan (13).

9. The refrigerated range hood according to claim 8, characterized in that: The housing (1) includes an upper box (101) and a smoke inlet chamber (102). The fume extractor (13) is located inside the upper box (101). The smoke inlet chamber (102) is located below the rear side of the upper box (101). A fresh-keeping chamber (103) and a refrigeration chamber (104) are installed on the front side of the smoke inlet chamber (102).

10. The refrigerated range hood according to claim 9, characterized in that: The preservation chamber (103) and the refrigeration chamber (104) are arranged adjacent to each other on the left and right.

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