Single-cavity multi-system hot-fluorine defrosting refrigeration device

Abstract

The application provides a single-cavity multi-system hot fluorine defrosting refrigeration device, which comprises a refrigeration device body, wherein the refrigeration device body has a refrigeration cavity and multiple independent refrigeration systems; each refrigeration system comprises a compressor, a condenser, a throttling device, an evaporator and a solenoid valve; refrigerant discharged from the exhaust port of the compressor is divided into a first branch and a second branch; the first branch passes through the condenser and the throttling device in sequence and then merges with the second branch to enter the evaporator; the refrigerant discharged from the evaporator returns to the gas inlet of the compressor; and the solenoid valve is arranged on the second branch, and when the solenoid valve is opened, the refrigerant in the second branch defrosts the evaporator. The application can ensure the total amount of refrigerant and defrost the evaporator by using the second branch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, refrigeration warehouses and the like, in particular to a refrigeration device with a multi-refrigeration system and hot fluorine defrosting, and more particularly to a single-cavity multi-system hot fluorine defrosting refrigeration device. BACKGROUND

[0002] At present, refrigeration equipment such as refrigerators is gradually using hydrocarbon refrigerants such as R290, but for the filling amount of hydrocarbon refrigerants in the refrigeration system, some standards require a maximum filling amount, and for freon refrigerants, some refrigeration components also have a maximum filling amount requirement for the filling amount of refrigerants, which makes it difficult to meet the required use temperature for some large-capacity refrigeration devices.

[0003] The existing refrigeration device adopts the mode of an electric heating pipe outside the evaporator for defrosting, which increases the heat radiation of the electric heating pipe to the inside of the refrigeration device during defrosting, and has a great influence on the internal temperature. In addition, if carbon hydrogen refrigerant is used, if there is a leak in the refrigeration device and the density reaches the ignition point of the carbon hydrogen refrigerant, an electric spark will be generated due to the damage of the electric heating pipe, which will cause a risk of explosion in the cavity of the refrigeration device. SUMMARY

[0004] According to the above technical problem, a single-cavity multi-system hot fluorine defrosting refrigeration device is provided.

[0005] The technical means adopted by the present application are as follows:

[0006] A single-cavity multi-system hot fluorine defrosting refrigeration device, comprising a refrigeration device body, the refrigeration device body having a refrigeration cavity and a plurality of independent refrigeration systems;

[0007] The refrigeration device body is provided with a heat preservation layer material, which can play a certain heat preservation role.

[0008] Each refrigeration system comprises a compressor, a condenser, a throttling device, an evaporator and a solenoid valve; the refrigerant discharged from the exhaust port of the compressor is divided into a first branch and a second branch, the first branch passes through the condenser and the throttling device in sequence and then merges with the second branch to enter the evaporator, the refrigerant discharged from the evaporator returns to the gas inlet of the compressor, and the solenoid valve is arranged on the second branch, when the solenoid valve is opened, the refrigerant in the second branch defrosts the evaporator.

[0009] Preferably, the plurality of condensers are made into an integrated type, but the pipelines are not connected to each other. The compressor, the solenoid valve and the condenser are installed at the unit installation position of the refrigeration device body.

[0010] Preferably, the plurality of evaporators are made into an integrated type, but the pipelines are not connected to each other. The evaporators are installed in the refrigeration cavity, and the placement positions of the evaporator fans are determined according to the actual wind direction.

[0011] Preferably, the refrigerant is R290 or other refrigerant, and the refrigerant is controlled below the maximum encapsulation requirement of national standards, industry standards or the maximum refrigerant encapsulation required by the compressor and other parts.

[0012] Preferably, the refrigeration cavity has a door, which is a solid door with thermal insulation material or a glass door or a glass door with an electric heating film or a wind curtain.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] 1. The present application ensures the total amount of refrigerant by setting multiple independent refrigeration systems, which can meet the required use temperature of some large-capacity refrigeration devices.

[0015] 2. The present application uses a solenoid valve to control the opening and closing of the second branch to defrost the evaporator, instead of using an electric heating tube, which does not affect the internal temperature and is safe and reliable.

[0016] 3. The present application can select to open one refrigeration system or multiple refrigeration systems simultaneously according to the specific use of the refrigeration device, with free selection.

[0017] 4. The present application can install two or more groups of refrigeration systems according to the specific use of the refrigeration device.

[0018] 5. The condenser is made into an integrated type, and the evaporator is made into an integrated type, which saves more installation space.

[0019] Based on the above reasons, the present application can be widely popularized in the field of refrigerators or refrigeration warehouses. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a refrigeration system connection diagram in the specific embodiment of the present application.

[0022] Figure 2 It is a condenser combination structure diagram in the specific embodiment of the present application.

[0023] Figure 3 It is an evaporator combination structure diagram in the specific embodiment of the present application.

[0024] Figure 4A single-cavity multi-system hot fluorine defrosting refrigeration device structure diagram is shown in the specific embodiment of the present application.

[0025] In the figure: 1, compressor; 2, condenser; 3, throttling device; 4, evaporator; 5, electromagnetic valve; 6, condenser fan; 7, evaporator fan; 8, condenser combination; 9, evaporator combination; 10, refrigeration device body; 11, unit combination. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a reference to the presence of a feature, step, operation, device, component and / or combinations thereof.

[0029] Unless specifically stated otherwise, the relative arrangement of the components and steps, numerical expressions, and numerical values set forth in the various examples herein are not limitations of the present application. It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the description of the present application. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters in the following drawings represent similar items, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0030] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application: the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0031] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0032] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0033] As shown in Figures 1 to 4 A single-cavity multi-system hot-fluorine defrosting refrigeration device, comprising a refrigeration device body, the refrigeration device body 10 has a refrigeration cavity and a plurality of independent refrigeration systems A, two independent refrigeration systems A are used in the present embodiment, and the refrigeration device body 10 is provided with a heat preservation layer material, which can play a certain heat preservation role.

[0034] Each refrigeration system A comprises a compressor 1, a condenser 2, a throttling device 3, an evaporator 4 and a solenoid valve 5;

[0035] As shown in Figure 2 A plurality of condensers 3 are integrated to form a condenser combination 8, the condenser combination 8 shares one condensing fan 6 in the present embodiment, and a plurality of condensing fans 6 can also be used, and the pipelines of the condenser combination 8 are not connected to each other, as shown in Figure 4As shown, the condenser assembly 8, the condenser fan 6, the compressor 1 and the evaporator 4 form a unit assembly 11. The unit assembly 11 is installed at the unit mounting location of the refrigeration unit body 10. In this specific embodiment, the unit mounting location is located at the bottom of the refrigeration unit body 10.

[0036] like Figure 3 As shown, multiple evaporators 4 are integrated into one unit, forming an evaporator assembly 9, but their piping is not interconnected. The throttling device 3, the evaporator assembly 9, and the evaporator fan 7 are installed inside the refrigeration chamber (e.g., Figure 4 The number of evaporator fans 7 is selected according to needs, and the placement of the evaporator fans 7 is determined according to the actual wind direction. In this specific embodiment, one evaporator fan 7 is used (e.g., Figure 1 (As shown). The refrigeration chamber has a door, which can be a solid door with insulation material, a glass door, a glass door with an electric heating film, or an air curtain.

[0037] The connection relationship of refrigeration system A is as follows Figure 1 As shown:

[0038] After the refrigerant is discharged from the exhaust port of compressor 1, it is connected to one end of pipe a. Then, the end of pipe a is divided into the first branch and the second branch. The refrigerant is R290 or other refrigerants, and the refrigerant is controlled below the maximum filling amount required by national standards and industry standards or below the maximum filling amount required by compressors and other components.

[0039] The first branch includes pipe b connected to the end of pipe a, the end of pipe b connected to one end of condenser 2, the other end of condenser connected to pipe c, the end of pipe c connected to one end of throttling device 3, and the other end of throttling device 3 connected to the end of pipe d.

[0040] The second branch includes pipe g, which is connected to the end of pipe a. The end of pipe g is connected to pipe h via solenoid valve 5. The other end of pipe h merges with the end of pipe d.

[0041] Furthermore, the end of pipe d is connected to pipe e, the end of pipe e is connected to one end of evaporator 4, and the other end of evaporator 4 is connected to the return port of compressor through pipe f.

[0042] During the refrigeration process, compressor 1 operates, solenoid valve 5 is closed, and refrigerant is discharged from compressor 1, flowing from pipe a to b, entering condenser 2 for cooling, then flowing through pipe c to throttling device 3 for throttling, then through pipe d to e, entering evaporator 4 for cooling, and then returning to compressor 1 through pipe f to begin the reciprocating refrigeration cycle. At this time, because solenoid valve 5 is closed, refrigerant does not flow through pipes g and h. During the refrigeration process, the two refrigeration systems can operate simultaneously, or only one can be selected to operate as needed, offering flexible operation.

[0043] In the hot defrosting process, the compressor 1 is running, the electromagnetic valve 5 is opened, the refrigerant is discharged by the compressor 1 and then reaches the pipeline a to b and g, but due to the throttling device 3 in the refrigeration system, the flow is limited, the refrigerant mainly flows through the pipeline g into the electromagnetic valve 5, and then flows through the pipeline h to e into the evaporator 4, since the refrigerant discharged by the compressor at this time has not been cooled by the condenser 2 and throttled by the throttling device 3, the refrigerant with heat can perform hot defrosting on the evaporator 4, and then returns to the compressor 1 through the pipeline f to perform hot defrosting circulation. In the hot defrosting process, two systems can work simultaneously or one system can be selected to work according to the defrosting needs.

[0044] The specific embodiment guarantees the total amount of refrigerant by setting two independent refrigeration systems A, and can meet the required use temperature of a large-capacity refrigeration device.

[0045] The second branch controlled by the electromagnetic valve 5 in the specific embodiment performs defrosting on the evaporator 4, and no electric heating tube is used, so that the internal temperature is not affected, and the specific embodiment is safe and reliable.

[0046] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A single- compartment multi-system hot gas defrost refrigeration device, characterized in that, The refrigeration device comprises a refrigeration device body, the refrigeration device body has a refrigeration cavity and multiple independent refrigeration systems; Each refrigeration system comprises a compressor, a condenser, a throttling device, an evaporator and a solenoid valve; The refrigerant discharged from the exhaust port of the compressor is divided into a first branch and a second branch, the first branch passes through the condenser and the throttling device in sequence and then merges with the second branch to enter the evaporator, the refrigerant discharged from the evaporator returns to the gas inlet of the compressor, and the solenoid valve is arranged on the second branch, when the solenoid valve is opened, the refrigerant in the second branch defrosts the evaporator; During the refrigeration process, the compressor operates and the solenoid valve is closed, the refrigerant discharged from the compressor passes through the pipeline a to b, enters the condenser to be cooled, passes through the pipeline c to enter the throttling device to be throttled, passes through the pipeline d to e to enter the evaporator to be refrigerated, and then passes through the pipeline f to return to the compressor to perform a reciprocating refrigeration cycle, at this time, since the solenoid valve is closed, the refrigerant does not flow through the pipelines g and h, and the two refrigeration systems can work simultaneously or one can be selected to work according to needs, and the working mode is flexible; During the hot fluorine defrosting process, the compressor operates and the solenoid valve is opened, the refrigerant discharged from the compressor passes through the pipelines a to b and g, but since the refrigeration system has the throttling device, the flow is limited, the refrigerant mainly flows through the pipeline g to enter the solenoid valve and flows through the pipeline h to e to enter the evaporator, since the refrigerant discharged from the compressor does not pass through the condenser to be cooled and the throttling device to be throttled at this time, the refrigerant with heat can defrost the evaporator, and then passes through the pipeline f to return to the compressor to perform a hot fluorine defrosting cycle, during the hot fluorine defrosting process, the two systems can work simultaneously or one can be selected to work according to defrosting needs; The throttling device and the evaporator are arranged in the refrigeration cavity, and the compressor and the condenser are arranged outside the refrigeration cavity and located at a unit installation position of the refrigeration device body; The refrigeration cavity has a door, the door is a solid door with thermal insulation material, a glass door or a glass door with an electric heating film or a wind curtain.

2. A single-enclosure multi-system heat-fluorine defrost refrigeration device according to claim 1, characterized in that, Multiple condensers are integrated, and the compressor, the solenoid valve and the condenser are installed at the unit installation position of the refrigeration device body.

3. A single-enclosure multi-system heat-fluorine defrost refrigeration device according to claim 1, characterized in that, Multiple evaporators are integrated and arranged in the refrigeration cavity, and the arrangement positions of the evaporator fans of the evaporators are determined according to actual wind directions.

4. A single-enclosure multi-system heat-fluorine defrost refrigeration device according to claim 1, characterized in that, The refrigerant is R290.

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