Refrigerating system of refrigerator and refrigerator

Abstract

The utility model relates to the technical field of refrigerating equipment, and provides a refrigerating system of a refrigerator and the refrigerator, the refrigerating system of the refrigerator comprises a compressor, a condenser and an evaporator which are sequentially connected through a refrigerating pipeline, and a first pipeline is arranged between an outlet of the compressor and an inlet of the condenser and provided with a heat exchanger; the heat exchanger is suitable for being installed on the outer side of the temperature changing box and exchanges heat with the temperature changing box. When the temperature of the variable temperature box needs to be controlled to rise, a high-temperature cooling medium at the outlet of the compressor can be used for directly conducting heat exchange and temperature rise on the variable temperature box through the heat exchanger, so that the variable temperature box can reach a higher temperature interval, wide-range temperature change of the variable temperature box is achieved, the temperature change interval of the variable temperature box is increased, and the use scene of the refrigerator is expanded; and users can use conveniently.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, and particularly relates to a refrigeration system and a refrigerator. Background Technology

[0002] In related technologies, the temperature range of the variable temperature zone of household air-cooled refrigerators is usually set between +5℃ and -30℃, which cannot achieve a variable temperature of 40℃ or higher. This limits the application scenarios, such as the inability to use it for heating water for babies or for comfortable heat preservation, making it inconvenient for users. Utility Model Content

[0003] This application provides a refrigeration system and a refrigerator to solve the problem that the temperature adjustment range of existing refrigerators is limited, causing inconvenience to users.

[0004] In a first aspect, embodiments of this application provide a refrigeration system for a refrigerator, including a compressor, a condenser, and an evaporator connected in sequence via refrigeration pipes. A first pipe is provided between the outlet of the compressor and the inlet of the condenser. A heat exchanger is provided in the first pipe. The heat exchanger is adapted to be installed on the outside of a variable temperature chamber and to exchange heat with the variable temperature chamber.

[0005] In some embodiments of this application, the first pipeline is provided with a first solenoid valve, which is located between the inlet of the compressor and the inlet of the heat exchanger. A second pipeline is also provided between the outlet of the compressor and the inlet of the condenser. The second pipeline is connected in parallel with the first pipeline and is provided with a second solenoid valve.

[0006] In some embodiments of this application, the first pipeline is further provided with a one-way valve, the inlet of which is connected to the outlet of the heat exchanger, and the outlet of which is connected to the inlet of the condenser.

[0007] In some embodiments of this application, the refrigeration system is further provided with a temperature sensor, which is used to detect the current temperature of the variable temperature chamber, and the first solenoid valve is configured to close after the current temperature reaches a preset temperature.

[0008] In some embodiments of this application, the heat exchanger is a heat exchange tube, and the heat exchange tube is spirally wound around the outer side of the temperature-changing box.

[0009] In some embodiments of this application, the refrigeration system further includes fasteners for installing the heat exchange tube into the variable temperature chamber and for making the wall of the heat exchange tube abut against the side of the variable temperature chamber.

[0010] In some embodiments of this application, the fastener includes aluminum foil, which covers the exterior of the heat exchange tube and the variable temperature chamber.

[0011] In some embodiments of this application, the refrigeration system further includes a refrigeration duct, which is connected to the variable temperature box and is adapted to exchange heat with the evaporator to refrigerate the variable temperature box.

[0012] In some embodiments of this application, a drying filter is provided at the outlet of the condenser, and a capillary tube is provided between the drying filter and the evaporator.

[0013] Secondly, embodiments of this application also provide a refrigerator, the refrigerator comprising:

[0014] Variable temperature chamber;

[0015] In the refrigeration system of the refrigerator described in the above embodiments, the heat exchanger is disposed in the variable temperature box to exchange heat with the variable temperature box.

[0016] The refrigeration system of the refrigerator provided in this application includes a compressor, a condenser, and an evaporator connected in sequence via refrigeration pipes. A first pipe is provided between the compressor outlet and the condenser inlet, and a heat exchanger is provided in the first pipe. The heat exchanger is adapted to be installed on the outside of the variable temperature box and exchanges heat with the variable temperature box. When it is necessary to control the temperature rise of the variable temperature box, the high-temperature cooling medium at the compressor outlet can be used to directly exchange heat with the variable temperature box through the heat exchanger to raise the temperature, enabling the variable temperature box to reach a higher temperature range. This achieves a wide temperature range for the variable temperature box, increases the temperature variation range of the variable temperature box, expands the application scenarios of the refrigerator, and facilitates user use.

[0017] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0020] Figure 1 A schematic diagram of the refrigeration system of the refrigerator provided in this application embodiment. Figure 1 .

[0021] Figure 2 A schematic diagram of the refrigeration system of the refrigerator provided in this application embodiment. Figure 2 .

[0022] Figure 3 This is an installation diagram of a heat exchanger installed in a variable temperature box, as provided in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the refrigeration system of a refrigerator in the prior art.

[0024] Figure 5 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application.

[0025] Figure label:

[0026] 100, Compressor; 200, Condenser; 300, Dryer Filter; 400, Capillary Tube; 500, Evaporator; 600, Heat Exchanger; 700, Temperature Variable Box; 110, First Pipeline; 111, First Solenoid Valve; 112, Check Valve; 120, Second Pipeline; 121, Second Solenoid Valve. Detailed Implementation

[0027] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0028] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] A schematic diagram of the refrigeration system of a refrigerator in the prior art is shown below. Figure 4 As shown, the temperature range of the variable temperature zone in a household air-cooled refrigerator is +5 to -30℃. It is impossible to achieve a variable temperature of +40℃ or higher. Users may need to use these high-temperature zones in certain life scenarios, such as for baby water or keeping cooked food warm. Items taken out of this temperature range can be used without heating, which is convenient for users.

[0033] This application provides a refrigeration system and a refrigerator to solve the problem that existing refrigerators have a limited temperature adjustment range, causing inconvenience to users. The following will be described in conjunction with the accompanying drawings. Figure 1-5 Please provide an explanation.

[0034] The refrigeration system of the refrigerator provided in this application embodiment can be applied to refrigerators. For examples, please refer to [link to relevant documentation]. Figure 5 , Figure 5 This is a schematic diagram of the structure of a refrigerator provided in an embodiment of this application. It is understood that the refrigerator can be a single-door refrigerator, a double-door refrigerator, or a three-door refrigerator, etc., and this embodiment does not specifically limit it.

[0035] In the embodiments of this application, reference is made to Figure 1 and Figure 2As shown, the refrigeration system of the refrigerator includes a compressor, a condenser and an evaporator 500 connected in sequence through refrigeration pipes. A first pipe 110 is provided between the outlet of the compressor and the inlet of the condenser. A heat exchanger 600 is provided in the first pipe 110. The heat exchanger 600 is adapted to be installed on the outside of the variable temperature box 700 and exchange heat with the variable temperature box 700.

[0036] Understandably, during normal refrigerator cooling, the compressor draws in low-temperature, low-pressure refrigerant gas and compresses it into high-temperature, high-pressure gas. During compression, both the temperature and pressure of the refrigerant increase significantly. After entering the condenser, the high-temperature, high-pressure refrigerant gas exchanges heat with the external environment through fins or pipes, releasing heat and condensing into a high-pressure, room-temperature liquid. This high-pressure, room-temperature refrigerant liquid then undergoes throttling and pressure reduction before entering the evaporator 500. In the evaporator 500, the refrigerant liquid absorbs heat from inside the refrigerator and vaporizes, thus achieving the cooling effect.

[0037] During the refrigeration process, the temperature at the compressor outlet can typically reach as high as 60°C. By setting a first pipe 110 between the compressor outlet and the condenser inlet, the high-temperature refrigerant gas from the compressor outlet is used to exchange heat with the variable temperature box 700 through the heat exchanger 600 in the first pipe 110, raising the temperature of the variable temperature box 700 to a higher temperature (above 40°C). This achieves a wide temperature range for the variable temperature box 700, enabling the refrigerator to adapt to more diverse usage scenarios, such as heating baby food and keeping beverages warm, thus meeting more personalized user needs and improving the convenience and flexibility of the refrigerator.

[0038] Meanwhile, the heat exchanger 600 directly utilizes the high-temperature refrigerant gas in the compressor's refrigeration cycle for heating, eliminating the need for additional heating devices and energy consumption, thus improving the refrigerator's energy efficiency ratio and saving energy.

[0039] For example, the heat exchanger 600 and the temperature box 700 can be in contact, that is, they are directly connected by thermal conduction; the heat exchanger 600 and the temperature box 700 can also be in a non-contact manner, such as heat exchange by thermal radiation. This embodiment does not specifically limit this.

[0040] In one alternative implementation, refer to Figure 1 As shown, the first pipeline 110 is equipped with a first solenoid valve 111, which is located between the inlet of the compressor and the inlet of the heat exchanger 600. A second pipeline 120 is also provided between the outlet of the compressor and the inlet of the condenser. The second pipeline 120 is connected in parallel with the first pipeline 110, and the second pipeline 120 is equipped with a second solenoid valve 121.

[0041] It is understood that in this embodiment, the refrigeration system is also provided with a second pipeline 120, which is connected in parallel with the first pipeline 110. Both the first pipeline 110 and the second pipeline 120 are provided with corresponding solenoid valves. By opening and closing the corresponding solenoid valves, the flow direction of the refrigerant can be controlled, thereby realizing the switching between the cooling and heating functions of the variable temperature box 700.

[0042] Specifically, a first solenoid valve 111 is installed on the first pipe 110, and a second solenoid valve 121 is installed on the second pipe 120. When the refrigerator is in normal cooling mode, the second solenoid valve 121 opens, and the first solenoid valve 111 closes. The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which then enters the second pipe 120 through the open second solenoid valve 121. The high-temperature, high-pressure refrigerant gas releases heat and condenses into a liquid in the condenser. After being throttled and depressurized, it enters the evaporator 500. In the evaporator 500, the refrigerant liquid absorbs heat from inside the refrigerator and vaporizes, achieving the cooling effect.

[0043] When it is necessary to raise the temperature of the variable temperature chamber 700, the first solenoid valve 111 opens and the second solenoid valve 121 closes. The compressor compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which then enters the first pipeline 110 through the open first solenoid valve 111. The high-temperature, high-pressure refrigerant gas exchanges heat with the variable temperature chamber 700 in the heat exchanger 600, transferring heat to the variable temperature chamber 700 and thus raising its temperature. The refrigerant after heat exchange can then enter the condenser for subsequent refrigeration processes to cool the refrigerator's crisper or freezer compartments.

[0044] Furthermore, by adjusting the opening degree and opening time of the first solenoid valve 111, the temperature and heating rate of the variable temperature chamber 700 can be adjusted to meet different temperature regulation requirements of the variable temperature chamber 700. In some possible embodiments, the first solenoid valve 111 and the second solenoid valve 121 can be opened simultaneously, and the proportion of refrigerant entering the first pipeline 110 and the second pipeline 120 can be adjusted by adjusting the opening degree of the first solenoid valve 111 and the second solenoid valve 121, so as to simultaneously heat the variable temperature chamber 700 and cool the refrigerator compartment and the freezer compartment.

[0045] In one alternative implementation, refer to Figure 1 As shown, the first pipeline 110 is also equipped with a one-way valve 112. The inlet of the one-way valve 112 is connected to the outlet of the heat exchanger 600, and the outlet of the one-way valve 112 is connected to the inlet of the condenser.

[0046] In this embodiment, by setting a one-way valve 112 between the outlet of the heat exchanger 600 and the inlet of the condenser, the refrigerant in the second pipeline 120 is prevented from flowing back into the heat exchanger 600 when the second solenoid valve 121 is opened, thus avoiding the impact on the temperature of the variable temperature box 700. This ensures the temperature control accuracy of the variable temperature box 700, while reducing refrigerant loss caused by backflow and reducing energy consumption.

[0047] In an optional embodiment, the refrigeration system is further provided with a temperature sensor for detecting the current temperature of the variable temperature chamber 700, and the first solenoid valve 111 is configured to close after the current temperature reaches a preset temperature.

[0048] The temperature sensor can monitor the temperature of the variable temperature chamber 700 in real time, thereby ensuring the accuracy of temperature control. When the first solenoid valve 111 is opened to heat up the variable temperature chamber 700, the sensor will control the first solenoid valve 111 to close when the current temperature of the variable temperature chamber 700 reaches the preset temperature set by the user, thus avoiding unnecessary energy waste.

[0049] For example, when the user sets the temperature of the variable temperature box 700 to 40°C, the compressor and the first solenoid valve 111 are turned on to heat up the variable temperature box 700. If there is no cooling demand in the refrigerator and freezer compartments at this time, the condenser and evaporator 500 can be controlled to not work. When the temperature of the variable temperature box 700 is detected to reach 40°C, the first solenoid valve 111 is closed to stop heating. After a period of time, when the temperature of the variable temperature box 700 is detected to drop to a certain temperature threshold, such as 35°C, the compressor and the first solenoid valve 111 are controlled to open to continue heat exchange and heating up the variable temperature box 700, so that the temperature of the variable temperature box 700 is maintained within a reasonable temperature range.

[0050] In an optional embodiment, the refrigeration system further includes a refrigeration duct (not shown in the figure) connected to the variable temperature box 700. The refrigeration duct is adapted to exchange heat with the evaporator 500 to refrigerate the variable temperature box 700.

[0051] In this embodiment, when it is necessary to lower the temperature of the variable temperature box 700 during the normal temperature control process, the normal refrigeration process of a traditional air-cooled refrigerator can be adopted. The compressor and the second solenoid valve 121 are turned on, and the first solenoid valve 111 is turned off. The refrigeration duct can absorb the cold energy on the evaporator 500 and deliver it to the interior of the variable temperature box 700, thereby achieving the refrigeration effect.

[0052] When the refrigerant evaporates in the evaporator 500, it absorbs a large amount of heat, causing the surface temperature of the evaporator 500 to decrease. The cooling duct transfers this cooling energy to the airflow passing through it by being close to or adjacent to the evaporator 500. As the airflow passes through the cooling duct, it exchanges heat with the surface of the evaporator 500, thereby lowering its own temperature. The cooled airflow is then sent into the variable temperature chamber 700, achieving a cooling effect on the variable temperature chamber 700 and lowering its temperature.

[0053] Specifically, the cooling duct is equipped with an openable and closable damper. The opening and closing of the damper is controlled by the current temperature detected by the temperature sensor inside the temperature chamber 700. After the temperature of the temperature chamber 700 is reduced to the preset temperature, the damper is closed, thereby achieving precise temperature control of the temperature chamber 700.

[0054] In one alternative implementation, refer to Figure 1 and Figure 3 As shown, the heat exchanger 600 is a heat exchange tube, and the heat exchange tube is spirally wound on the outer side of the temperature box 700.

[0055] Understandably, the spirally wound heat exchange tubes around the outer surface of the temperature chamber 700 make the entire heat exchanger 600 more compact, saving space and improving the overall integration of the refrigeration system, without affecting the internal storage space of the temperature chamber 700. The spirally wound heat exchange tubes increase the contact area with the outer surface of the temperature chamber 700, thereby improving heat exchange efficiency and allowing heat to be transferred from the heat exchange tubes to the temperature chamber 700 more quickly, increasing the heating rate. Furthermore, the spirally wound heat exchange tubes can be configured according to the shape and size of the temperature chamber 700 to adapt to different application scenarios, improving flexibility.

[0056] In an optional embodiment, the refrigeration system further includes fasteners (not shown) for mounting the heat exchange tubes to the temperature chamber 700 and for abutting the wall of the heat exchange tubes against the side of the temperature chamber 700 to secure the heat exchange tubes to the temperature chamber 700, preventing the heat exchange tubes from moving or falling off during operation. This helps ensure close contact between the heat exchange tubes and the temperature chamber 700, thereby improving heat exchange efficiency.

[0057] In an optional embodiment, the fastener comprises aluminum foil that covers the exterior of the heat exchange tubes and the variable temperature chamber 700. The aluminum foil has excellent thermal conductivity, enabling rapid heat transfer and accelerating the heat transfer process from the heat exchange tubes to the variable temperature chamber 700, thereby improving heat exchange efficiency. Through its tight fit and high thermal conductivity design, the aluminum foil fastener significantly enhances the heat exchange effect, allowing the variable temperature chamber 700 to reach the required temperature in a shorter time, thus improving the system's response speed and efficiency.

[0058] In one alternative implementation, refer to Figure 1 As shown, a dryer filter 300 is installed at the outlet of the condenser, and a capillary tube 400 is installed between the dryer filter 300 and the evaporator 500. The high-pressure, room-temperature liquid in the condenser is reduced in pressure and becomes a low-pressure, low-temperature liquid after being throttled by the capillary tube 400. It then enters the evaporator 500 to absorb the heat of the object being cooled and vaporizes. Then it returns to the compressor for the next cycle, thus playing the role of cyclic refrigeration.

[0059] Secondly, this application also provides a refrigerator, which includes a variable temperature box 700 and the refrigeration system of the refrigerator in the above embodiment. A heat exchanger 600 is disposed in the variable temperature box 700 to exchange heat with the variable temperature box 700. By applying the refrigeration system of the refrigerator in the above embodiment, the temperature of the variable temperature box 700 can be raised to a higher range (-20 to +45°C), realizing a wide temperature range of the variable temperature box 700, making the refrigerator more widely used and improving the user experience.

[0060] It is understood that the refrigerator in this embodiment may also include a refrigerator compartment and a freezer compartment. The refrigeration system can cool and heat the refrigerator compartment and the freezer compartment, and selectively cool or heat the variable temperature box 700 to meet different user needs.

[0061] It is understood that if the refrigeration system of the refrigerator has the beneficial effects of the above embodiments, then the refrigerator will have the beneficial effects of the above embodiments accordingly. The specific implementation method can be referred to the above embodiments, and this embodiment will not repeat it.

[0062] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should all be covered within the protection scope of this application.

Claims

1. A refrigeration system for a refrigerator, characterized in that, The device includes a compressor, a condenser, and an evaporator (500) connected in sequence via refrigeration piping. A first pipe (110) is provided between the outlet of the compressor and the inlet of the condenser. A heat exchanger (600) is provided in the first pipe (110). The heat exchanger (600) is adapted to be installed on the outside of a variable temperature chamber (700) and to exchange heat with the variable temperature chamber (700).

2. The refrigeration system of the refrigerator according to claim 1, characterized in that, The first pipeline (110) is equipped with a first solenoid valve (111), which is located between the inlet of the compressor and the inlet of the heat exchanger (600). A second pipeline (120) is also provided between the outlet of the compressor and the inlet of the condenser. The second pipeline (120) is connected in parallel with the first pipeline (110), and the second pipeline (120) is equipped with a second solenoid valve (121).

3. The refrigeration system of the refrigerator according to claim 1, characterized in that, The first pipeline (110) is also provided with a one-way valve (112), the inlet of which is connected to the outlet of the heat exchanger (600), and the outlet of which is connected to the inlet of the condenser.

4. The refrigeration system of the refrigerator according to claim 2, characterized in that, The refrigeration system is also equipped with a temperature sensor, which is used to detect the current temperature of the variable temperature chamber (700). The first solenoid valve (111) is configured to close after the current temperature reaches a preset temperature.

5. The refrigeration system of the refrigerator according to claim 1, characterized in that, The heat exchanger (600) includes a heat exchange tube, which is spirally wound around the outer side of the temperature box (700).

6. The refrigeration system of the refrigerator according to claim 5, characterized in that, The refrigeration system also includes fasteners for installing the heat exchange tubes into the variable temperature chamber (700) and for making the wall of the heat exchange tubes abut against the side of the variable temperature chamber (700).

7. The refrigeration system of the refrigerator according to claim 6, characterized in that, The fasteners include aluminum foil, which covers the exterior of the heat exchange tube and the variable temperature chamber (700).

8. The refrigeration system of the refrigerator according to any one of claims 1-7, characterized in that, The refrigeration system also includes a refrigeration duct that is connected to the variable temperature box (700). The refrigeration duct is adapted to exchange heat with the evaporator (500) to refrigerate the variable temperature box (700).

9. The refrigeration system of the refrigerator according to any one of claims 1-7, characterized in that, The outlet of the condenser is provided with a dryer filter (300), and a capillary tube (400) is provided between the dryer filter (300) and the evaporator (500).

10. A refrigerator, characterized in that, The refrigerator includes: Variable temperature chamber (700); The refrigeration system of the refrigerator as described in any one of claims 1-9, wherein the heat exchanger (600) is disposed in the variable temperature chamber (700) to exchange heat with the variable temperature chamber (700).

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