Multi-capillary refrigerating system, freezer and refrigerator

Abstract

The utility model belongs to the technical field of refrigerating systems, and particularly discloses a multi-capillary refrigerating system, a freezer and a refrigerator. According to the multi-capillary-tube refrigerating system, the auxiliary refrigerating capillary tube connected with the main refrigerating capillary tube in parallel is arranged between the drying filter and the evaporator, and the one-way valve or the pressure reducing valve is adopted as a valve for controlling the auxiliary refrigerating capillary tube to be connected or disconnected. In the rapid cooling process, the exhaust pressure of the refrigeration system is high, the opening condition of the valve is met, the auxiliary refrigeration capillary tube is conducted to increase the flow, and therefore rapid refrigeration is achieved. In the low-load power consumption process, the exhaust pressure of the refrigerating system is reduced, the valve is closed, the auxiliary refrigerating capillary tube is cut off, and the flow entering the evaporator is reduced, so that the power consumption is reduced. According to the multi-capillary refrigerating system, the flow can be dynamically adjusted, and therefore the requirement for the refrigerating speed in the rapid cooling process and the requirement for reducing the power consumption in the low-load power consumption process are met at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration system technology, and relates to a multi-capillary refrigeration system, a freezer, and a refrigerator. Background Technology

[0002] The refrigeration system of a freezer or refrigerator mainly consists of a compressor, condenser, filter, expansion valve, and evaporator. The expansion valve is usually a capillary tube or an expansion valve. When the refrigeration system starts running, the refrigerant is compressed into a high-temperature, high-pressure gas in the compressor. It then enters the condenser through the exhaust pipe to dissipate heat, passes through the filter to remove impurities, and then passes through the expansion valve to reduce its pressure before entering the evaporator to expand, evaporate, and absorb heat. Finally, it returns to the compressor through the return pipe, thus completing one refrigeration cycle.

[0003] Currently, refrigeration systems on the market often prioritize faster cooling speeds. While systems using large-displacement compressors can achieve rapid cooling, the operating rate of these compressors tends to be low when the temperature stabilizes, typically between 10% and 30%. This results in lower overall efficiency and poor power consumption in actual use. Refrigeration systems using small-displacement compressors perform better in power consumption tests, but because their cooling capacity is smaller, they are less capable of meeting the demands of rapid cooling.

[0004] To simultaneously meet the demands of rapid cooling during the cooling phase and maintaining low power consumption during the low-load power consumption phase after temperature stabilization, two approaches are proposed. One approach is to use a refrigeration system with a variable frequency compressor. Variable frequency compressors operate at high speeds during cooling and low speeds during low-load power consumption phases to improve cooling speed and reduce power consumption. However, since the speed of current variable frequency compressors is generally between 1600 and 4500 RPM, their overall variation is limited. Even while ensuring cooling effect, the operating rate under power consumption conditions is only 20% to 40%, offering limited benefits for reducing power consumption. Furthermore, the cost of using a variable frequency compressor is higher than that of a fixed frequency compressor with the same cooling capacity. The other approach is to use a refrigeration system with an electronic expansion valve as a throttle. This dynamically adjusts the refrigeration system flow rate through the electronic expansion valve to meet the demands of rapid cooling and reduced power consumption. However, this type of refrigeration system requires an additional control system, resulting in high overall cost and limited market application.

[0005] In conclusion, the refrigeration systems of existing freezers and refrigerators require further structural improvements. Utility Model Content

[0006] The purpose of this invention is to propose a multi-capillary refrigeration system for use in freezers and refrigerators. This multi-capillary refrigeration system can meet the different flow requirements of rapid cooling and low-load power consumption processes, thereby achieving rapid cooling during the cooling phase and maintaining low power consumption after the temperature stabilizes.

[0007] To achieve the above objectives, this utility model adopts the following technical solution:

[0008] A multi-capillary refrigeration system includes a compressor, a condenser, a dryer filter, a main refrigeration capillary tube, an evaporator, an auxiliary refrigeration capillary tube, and valves; wherein the compressor, condenser, dryer filter, main refrigeration capillary tube, and evaporator are sequentially connected to form a circuit;

[0009] An auxiliary refrigeration capillary tube is also installed between the dryer filter and the evaporator, and the auxiliary refrigeration capillary tube is connected in parallel with the main refrigeration capillary tube.

[0010] A valve is installed between the dryer filter and the auxiliary refrigeration capillary tube. The valve is either a check valve or a pressure reducing valve.

[0011] Preferably, at least two auxiliary refrigeration capillary tubes are provided, and the auxiliary refrigeration capillary tubes are connected in parallel with each other;

[0012] A valve is installed between the dryer filter and each auxiliary refrigeration capillary tube.

[0013] Preferably, the multi-capillary refrigeration system also includes a fan;

[0014] The fan is located on the outside of the evaporator, and the airflow generated by the fan passes over the surface of the evaporator.

[0015] Preferably, the multi-capillary refrigeration system also includes a temperature sensor for measuring the temperature at the fan.

[0016] Preferably, the multi-capillary refrigeration system also includes a controller;

[0017] The controller is electrically connected to both the fan and the temperature sensor.

[0018] A freezer, wherein the freezer is provided with the above-mentioned multi-capillary refrigeration system.

[0019] Preferably, the evaporator, fan, and temperature sensor are located in the refrigeration compartment of the freezer.

[0020] A refrigerator, wherein the refrigerator is provided with the above-described multi-capillary refrigeration system.

[0021] Preferably, the evaporator, fan, and temperature sensor are located in the refrigerator's cooling compartment.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] As described above, this utility model discloses a multi-capillary refrigeration system applied to freezers and refrigerators. This system features an auxiliary refrigeration capillary tube between the dryer filter and the evaporator, connected in parallel with the main refrigeration capillary tube. The auxiliary capillary tube's opening and closing are controlled by a valve. During rapid cooling, the high exhaust pressure of the refrigeration system satisfies the valve opening condition, allowing the auxiliary capillary tube to open and increasing the flow rate, thus achieving rapid cooling. During low-load power consumption after temperature stabilization, the exhaust pressure of the refrigeration system decreases, causing the valve to close and the auxiliary capillary tube to shut off, thereby reducing the flow rate and lowering power consumption. This multi-capillary refrigeration system can dynamically adjust the flow rate of the refrigeration system, simultaneously meeting the demand for rapid cooling and reducing power consumption during low-load power consumption. Furthermore, this multi-capillary refrigeration system uses a one-way valve or a pressure-reducing valve to control the opening and closing of the auxiliary refrigeration capillary tube. Compared to traditional refrigeration systems, it requires no additional electrical components, resulting in a simple structure, low cost, and high versatility. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0025] Figure 1 This is a schematic diagram of the structure of the multi-capillary refrigeration system in an embodiment of this utility model.

[0026] Among them, 1-compressor, 2-condenser, 3-drier filter, 4-valve, 5-main refrigeration capillary tube, 6-auxiliary refrigeration capillary tube, 7-evaporator, 8-fan, 9-temperature sensor, 10-refrigeration chamber. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0033] Example 1

[0034] like Figure 1 As shown, the multi-capillary refrigeration system in this embodiment includes a compressor 1, a condenser 2, a dryer filter 3, a valve 4, a main refrigeration capillary tube 5, an auxiliary refrigeration capillary tube 6, an evaporator 7, a fan 8, and a temperature sensor 9.

[0035] The system comprises a compressor 1, condenser 2, dryer filter 3, main refrigeration capillary tube 5, and evaporator 7 connected sequentially to form a circuit. The compressor 1, as the power core of the multi-capillary tube refrigeration system, compresses the intake refrigerant gas into a high-temperature, high-pressure gas. This high-temperature, high-pressure refrigerant gas then enters the condenser 2 for heat exchange, during which the refrigerant gas releases heat and gradually liquefies into a high-pressure, room-temperature liquid. The high-pressure, room-temperature liquid refrigerant then passes through the dryer filter 3 to absorb moisture and filter impurities before entering the main refrigeration capillary tube 5. The narrow tube diameter achieves throttling and pressure reduction, and the gas then enters the evaporator 7 to absorb heat from the surrounding environment and completely vaporize. Finally, the refrigerant gas re-enters the compressor 1 through the circuit to begin the next cycle, thus achieving refrigeration.

[0036] In this embodiment of the multi-capillary refrigeration system, an auxiliary refrigeration capillary tube 6 is also provided between the dryer filter 3 and the evaporator 7, and the auxiliary refrigeration capillary tube 6 is connected in parallel with the main refrigeration capillary tube 5. A valve 4 is provided between the dryer filter 3 and the auxiliary refrigeration capillary tube 6, and the valve 4 is a one-way valve or a pressure reducing valve.

[0037] In this embodiment, the multi-capillary refrigeration system utilizes the pressure difference required for the opening and closing of a pressure reducing valve or a check valve. During the load-heating phase requiring rapid cooling, the exhaust pressure within the refrigeration system is high, and valve 4 automatically opens due to the pressure difference. At this time, the auxiliary refrigeration capillary 6 is activated, and refrigerant is supplied through both the parallel auxiliary refrigeration capillary 6 and the main refrigeration capillary 5, thereby increasing the flow rate and achieving multi-channel rapid cooling. During the low-load power consumption phase after cooling is complete, the exhaust pressure of the refrigeration system decreases, causing valve 4 to automatically close and the auxiliary refrigeration capillary 6 to shut off. At this time, only the main refrigeration capillary 5 supplies refrigerant, thereby reducing the flow rate. Using a single main refrigeration capillary 5 achieves optimal power consumption. In this multi-capillary refrigeration system, the auxiliary refrigeration capillary 6 connected in parallel with the main refrigeration capillary 5 and the valve 4 controlling the opening and closing of the auxiliary refrigeration capillary 6 achieve dynamic adjustment of the flow rate in the refrigeration system. It has strong versatility and can be widely applied to different types of refrigeration systems.

[0038] To allow for more flexible flow regulation in the refrigeration system, at least two auxiliary refrigeration capillary tubes 6 are preferably provided, with each auxiliary refrigeration capillary tube 6 connected in parallel. A valve 4 is provided between the dryer filter 3 and each auxiliary refrigeration capillary tube 6. In this embodiment of the multi-capillary refrigeration system, two auxiliary refrigeration capillary tubes 6 are provided, each connected in parallel with the main refrigeration capillary tube 5. Two valves 4 are provided, one between the dryer filter 3 and each of the two auxiliary refrigeration capillary tubes 6.

[0039] One or more auxiliary refrigeration capillary tubes 6 are installed between the dryer filter 3 and the evaporator 7, connected in parallel with the main refrigeration capillary tube 5. One end of the auxiliary refrigeration capillary tube 6 is connected to the dryer filter 3 via a valve 4, and the other end is connected to the evaporator 7. During the load-pull-out phase, the exhaust pressure of the refrigeration system is high, satisfying the opening conditions of one or more valves 4, causing a change in the flow rate of the refrigeration system. At this time, opening valves 4 increases the flow rate of the refrigeration system to match the optimal operating conditions of compressor 1 and achieve rapid cooling. In the middle and later stages of cooling, the exhaust pressure in the refrigeration system decreases, and some of the previously opened valves 4 close. At this time, the flow rate of the refrigeration system decreases to further optimize the flow rate and gradually reduce the power consumption of the refrigeration system. In the final stage of cooling, after the temperature stabilizes, it enters the low-load power consumption phase. The exhaust pressure in the refrigeration system further decreases, at which time all valves 4 close, the auxiliary refrigeration capillary tubes 6 are cut off, and the refrigeration in the circuit only flows through the main refrigeration capillary tube 5, thereby minimizing the flow rate of the refrigeration system and entering the optimal power consumption state, achieving a reduction in the overall power consumption of the unit. The advantage of this multi-capillary refrigeration system is that it can adapt to the flow rate required by the compressor 1 in real time, thereby improving the cooling speed and reducing power consumption when the temperature is kept stable.

[0040] In addition, the multi-capillary refrigeration system of this embodiment also includes a fan 8. The fan 8 is preferably located outside the evaporator 7. The airflow generated by the fan 8 passes over the surface of the evaporator 7, which helps to quickly dissipate heat from the refrigerant in the evaporator 7, enabling the refrigeration system to achieve faster cooling during the load temperature-increasing phase.

[0041] In addition, the multi-capillary cooling system also includes a controller and a temperature sensor 9 for measuring the temperature at the fan 8. The controller is electrically connected to both the fan 8 and the temperature sensor 9, and can adjust the speed of the fan 8 according to the temperature measured by the temperature sensor 9, thereby saving power consumption while meeting the need for rapid cooling.

[0042] This embodiment of the multi-capillary refrigeration system, based on the varying efficiency of compressor 1 under different operating conditions, utilizes the pressure difference required for the opening and closing of the pressure reducing valve or check valve. Valve 4 acts as the switch for one or more new expansion valves, namely the auxiliary refrigeration capillary tubes 6. This allows control of the auxiliary refrigeration capillary tubes 6 during the rapid cooling phase, increasing flow rate and achieving multi-path cooling and rapid refrigeration. Furthermore, this multi-capillary refrigeration system can also control the auxiliary refrigeration capillary tubes 6 to shut off under power-consuming conditions, connecting the entire circuit only through a single expansion valve, namely the main refrigeration capillary tube 5, to reduce flow rate and achieve optimal power consumption.

[0043] The working principle of the multi-capillary refrigeration system in this embodiment is as follows:

[0044] In this embodiment, the multi-capillary refrigeration system connects one or more auxiliary refrigeration capillary tubes 6 in parallel between the dryer filter 3 and the evaporator 7, and uses a pressure reducing valve or a one-way valve as a valve 4 to control the opening and closing of the auxiliary refrigeration capillary tubes 6.

[0045] During the load-heating phase, the refrigeration system's discharge pressure is high, meeting the opening conditions of one or more pressure-reducing valves or check valves. The auxiliary refrigeration capillary tube 6 is activated, causing a change in the refrigeration system's flow rate. The flow rate increases to match the optimal operating conditions of compressor 1, achieving rapid cooling. In the later stages of cooling, the refrigeration system's discharge pressure gradually decreases, and some previously opened pressure-reducing valves or check valves close, thus cutting off some auxiliary refrigeration capillary tubes 6, further optimizing the flow rate. At this point, the refrigeration system's flow rate and power consumption gradually decrease. Towards the end of cooling, after the internal temperature stabilizes, the discharge pressure in the refrigeration system further decreases. At this point, all pressure-reducing valves or check valves close, and all auxiliary refrigeration capillary tubes 6 are cut off. Only the main refrigeration capillary tube 5 is used as a throttling device, maintaining a low flow rate and entering an optimal power consumption state, thus reducing overall power consumption. This multi-capillary refrigeration system can adapt to the flow rate required by compressor 1 in real time, increasing the cooling speed during the load-heating phase while reducing power consumption during low-load power consumption.

[0046] Example 2

[0047] A freezer is provided, wherein the freezer is equipped with the multi-capillary refrigeration system described in Embodiment 1.

[0048] The evaporator 7, fan 8 and temperature sensor 9 are preferably located in the refrigeration compartment 10 of the freezer, which is either a freezer compartment or a refrigerator compartment.

[0049] The multi-capillary refrigeration system in this embodiment of the freezer has an auxiliary refrigeration capillary 6 connected in parallel with the main refrigeration capillary 5 between the dryer filter 3 and the evaporator 7, and a valve 4 is installed between the dryer filter 3 and the auxiliary refrigeration capillary 6. During rapid cooling, the exhaust pressure of the refrigeration system is high, meeting the opening conditions of valve 4, causing the auxiliary refrigeration capillary 6 to open and increasing the flow rate, thus achieving rapid cooling. During low-load power consumption after the temperature stabilizes, the exhaust pressure of the refrigeration system decreases, causing valve 4 to close and the auxiliary refrigeration capillary 6 to shut off, thereby reducing the flow rate and lowering power consumption. This multi-capillary refrigeration system can dynamically adjust the flow rate of the refrigeration system to meet the requirements of rapid cooling speed and low-load power consumption. Furthermore, in the multi-capillary refrigeration system of this embodiment of the freezer, a one-way valve or a pressure reducing valve is used as the valve 4 to control the opening and closing of the auxiliary refrigeration capillary 6. Compared with traditional refrigeration systems, no additional electrical components are required, resulting in lower cost and greater versatility.

[0050] Example 3

[0051] A refrigerator is provided with the multi-capillary refrigeration system described in Embodiment 1.

[0052] The evaporator 7, fan 8, and temperature sensor 9 are preferably located in the refrigerator's cooling compartment 10. The cooling compartment 10 can be either a freezer compartment or a refrigerator compartment, which allows the fan 8 speed to be adjusted based on the temperature measured by the temperature sensor 9, thus saving power while meeting the need for rapid cooling.

[0053] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the multi-capillary refrigeration system, freezer, and refrigerator of this utility model. Of course, the above description is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made using the content of this utility model's specification and drawings under the inventive concept of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model and should be protected by this utility model.

Claims

1. A multi-capillary refrigeration system, characterized in that, It includes a compressor, condenser, dryer filter, main refrigeration capillary tube, evaporator, auxiliary refrigeration capillary tube, and valves; wherein the compressor, condenser, dryer filter, main refrigeration capillary tube, and evaporator are connected in sequence to form a circuit; An auxiliary refrigeration capillary tube is also provided between the dryer filter and the evaporator, and the auxiliary refrigeration capillary tube is connected in parallel with the main refrigeration capillary tube. A valve is provided between the dryer filter and the auxiliary refrigeration capillary tube. The valve is a one-way valve or a pressure reducing valve.

2. The multi-capillary refrigeration system according to claim 1, characterized in that, At least two auxiliary refrigeration capillary tubes are provided, and the auxiliary refrigeration capillary tubes are connected in parallel with each other. A valve is installed between the dryer filter and each auxiliary refrigeration capillary tube.

3. The multi-capillary refrigeration system according to claim 1, characterized in that, The multi-capillary refrigeration system also includes a fan; The fan is located on the outside of the evaporator, and the airflow generated by the fan passes over the surface of the evaporator.

4. The multi-capillary refrigeration system according to claim 3, characterized in that, The multi-capillary refrigeration system also includes a temperature sensing probe for measuring the temperature at the fan.

5. The multi-capillary refrigeration system according to claim 4, characterized in that, The multi-capillary refrigeration system also includes a controller; The controller is electrically connected to both the fan and the temperature sensor.

6. A freezer, characterized in that, The freezer is equipped with the multi-capillary refrigeration system as described in any one of claims 1 to 5.

7. The freezer according to claim 6, characterized in that, The evaporator, fan, and temperature sensor are located in the refrigeration compartment of the freezer.

8. A refrigerator, characterized in that, The refrigerator is equipped with the multi-capillary refrigeration system according to any one of claims 1 to 5.

9. The refrigerator according to claim 8, characterized in that, The evaporator, fan, and temperature sensor are located in the refrigerator's cooling compartment.

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