Low-noise refrigerating system and refrigerating equipment

Abstract

The low-noise refrigerating system comprises a compressor, a condenser, a flow detection valve, a capillary tube, a capillary tube noise reduction device and an evaporator, the compressor, the condenser, the flow detection valve, the capillary tube, the capillary tube noise reduction device and the evaporator are sequentially connected to form a circulation path, the capillary tube noise reduction device comprises an input tube and a plurality of output tubes with different tube diameters, and one-way valves are arranged in the output tubes. The one-way valves and the flow detection valves are in communication connection with the controller, the controller opens one or more one-way valves based on the flow detected by the flow detection valves, self-adaptive shunt noise reduction is adopted, and noise generated by cooling liquid sprayed out of the capillary tubes is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a low-noise refrigeration system and refrigeration equipment. Background Art

[0002] In a refrigeration system, the compressor converts the refrigerant into high-temperature, high-pressure gas. This gas passes through the condenser for heat dissipation and cooling. After throttling and pressure reduction through the capillary tube, it enters the evaporator for evaporation and cooling before returning to the compressor's intake port. When the gas enters the evaporator, it erupts at high speed and produces a loud noise, causing significant discomfort to users. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a low-noise refrigeration system, including a compressor, a condenser, a flow detection valve, a capillary tube, a capillary tube noise reduction device and an evaporator which are connected in sequence to form a circulation path, the capillary tube noise reduction device includes an input pipe and a plurality of output pipes with different diameters, a one-way valve is arranged in the output pipe, the one-way valve and the flow detection valve are communicatively connected to a controller, and the controller opens one or more one-way valves based on the flow detected by the flow detection valve.

[0004] Specifically, there are two output pipes, namely a first output pipe and a second output pipe, and a first one-way valve and a second one-way valve are respectively provided in the first output pipe and the second output pipe.

[0005] Specifically, the capillary tube noise reduction device includes an input tube, an expansion tube and an output tube, and the diameter of the expansion tube is larger than the diameter of the input tube.

[0006] Specifically, the output pipe includes a first pipe section and a second pipe section, the first pipe section is connected to the capillary noise reduction device, the second pipe section is connected to the evaporator, and the diameter of the second pipe section is larger than the diameter of the first pipe section.

[0007] Specifically, the one-way valve is arranged in the first pipe section.

[0008] The utility model also provides a refrigeration device, comprising the above refrigeration system.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. The utility model provides a low-noise refrigeration system. On the basis of the traditional refrigeration system, the refrigeration system adds a flow detection valve, a capillary noise reduction device and a controller. A plurality of output pipes with different diameters are provided in the noise reduction device. Adaptive shunt noise reduction is adopted to significantly reduce the noise emitted by the coolant ejected from the capillary tube.

[0011] 2. The utility model adopts a double-diameter expansion progressive design in the capillary noise reduction device, which reduces the noise generated when the coolant enters the capillary noise reduction device and the noise when the coolant enters the evaporator. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the refrigeration cycle system of the utility model;

[0013] Figure 2 This is a schematic diagram of the control method of the utility model.

[0014] Figure 1: Compressor; 2: Condenser; 3: Flow detection valve; 4: Capillary tube; 5: Capillary tube noise reduction device; 51: Inlet pipe; 52: Expansion pipe; 53: First output pipe; 54: Second output pipe; 55: First one-way valve; 56: Second one-way valve; 6: Evaporator. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The specific implementation of the present invention is described in detail below in combination with specific embodiments.

[0016] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0017] The utility model provides a low-noise refrigeration system for use in refrigeration equipment such as refrigerators, freezers, and display cabinets. The low-noise refrigeration system includes a compressor 1, a condenser 2, a flow detection valve 3, a capillary tube 4, a capillary tube noise reduction device 5, and an evaporator 6, which are sequentially connected to form a circulation path. The high-speed gas-liquid mixture ejected from the capillary tube 4 enters the evaporator 6 through the capillary tube noise reduction device 5.

[0018] The capillary tube noise reduction device 5 includes an input tube 51 and multiple output tubes of different diameters. A one-way valve, specifically a solenoid valve, is provided in the output tube. The input tube 51 is connected to the outlet of the capillary tube 4, and the output tubes are connected to different positions of the evaporator 6. A flow detection valve 3 is provided between the condenser 2 and the capillary tube 4 to detect the flow entering the capillary tube 4. The refrigeration system is also provided with a controller that uses adaptive shunt noise reduction. The controller is in communication with the one-way valve and the flow detection valve 3. Multiple flow thresholds are set in the controller. The controller determines the relationship between the flow rate entering the capillary tube 4 detected by the flow detection valve 3 and the flow threshold, controls the opening of one or more one-way valves, and adjusts the coolant discharge route according to the coolant flow rate.

[0019] As a preferred embodiment of the present invention, the capillary tube noise reduction device 5 includes two output tubes, a first output tube 53 and a second output tube 54. A first check valve 55 and a second check valve 56 are respectively provided in the first output tube 53 and the second output tube 54. The diameter of the first output tube 53 is larger than that of the second output tube 54. The controller is provided with two flow thresholds Q1 and Q2, and the flow rate of the coolant entering the capillary tube 4 is Q. The specific control method of the controller is as follows:

[0020] 1. If Q≤Q1, the current flow rate entering the capillary tube 4 is small, and the low flow control mode is implemented. The first one-way valve 55 is closed, and the second one-way valve 56 is opened. The coolant is ejected from the second output pipe 54 with a smaller diameter, thereby increasing the coolant ejection rate and matching the corresponding flow and pressure conditions to ensure that the coolant can circulate smoothly in the refrigeration system.

[0021] 2. If Q1 < Q < Q2, the current flow rate entering the capillary tube 4 is medium, and the medium flow control mode is implemented. The second one-way valve 56 is closed, and the first one-way valve 55 is opened. The coolant is ejected from the first output pipe 53 with a larger diameter, matching the corresponding flow and pressure conditions and reducing the noise generated by the coolant ejection.

[0022] 3. If Q≥Q2, the current flow entering the capillary 4 is large, and the large flow control mode is executed. The first one-way valve 55 and the second one-way valve 56 are both open. Under high load and large flow intensity, the capillary 4 will emit a large noise. The first output pipe 53 and the second output pipe 54 are used as double branches to divide the large flow into two flows, forming a parallel double-spray structure, which greatly reduces the high-pressure spray noise.

[0023] To further reduce the noise generated by coolant ejection, the capillary tube noise reduction device 5 employs a double-diameter progressive expansion design. An expansion tube 52 is positioned between the inlet tube 51 and the outlet tube. The diameter of expansion tube 52 is larger than that of inlet tube 51. This expansion tube 52 represents the first expansion, reducing the flow rate of coolant entering the capillary tube noise reduction device 5 and thereby reducing the noise generated by the coolant. The outlet tube comprises a first section and a second section. The first section connects to the capillary tube noise reduction device 5, while the second section connects to the evaporator 6. A check valve is positioned in the first section. The diameter of the second section is larger than that of the first section. This second section of the outlet tube represents the second expansion, reducing the coolant ejection rate and further reducing the noise generated by the coolant entering the evaporator 6.

[0024] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation thereto. Any person skilled in the art may utilize the above disclosure to modify or remodel the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention shall remain within the scope of protection of the present invention.

Claims

1. A low-noise refrigeration system, characterized in that: include: A compressor (1), a condenser (2), a flow detection valve (3), a capillary tube (4), a capillary tube noise reduction device (5), and an evaporator (6) are sequentially connected to form a circulation path. The capillary tube noise reduction device (5) comprises an input pipe (51) and a plurality of output pipes with different pipe diameters. A one-way valve is provided in the output pipe. The one-way valve and the flow detection valve (3) are communicatively connected to a controller. The controller opens one or more one-way valves based on the flow detected by the flow detection valve (3).

2. The low-noise refrigeration system according to claim 1, characterized in that: There are two output pipes, namely a first output pipe (53) and a second output pipe (54). A first one-way valve (55) and a second one-way valve (56) are respectively provided in the first output pipe (53) and the second output pipe (54).

3. The low-noise refrigeration system according to claim 1, characterized in that: The capillary tube noise reduction device (5) comprises an input tube (51), an expansion tube (52) and an output tube, wherein the diameter of the expansion tube (52) is larger than the diameter of the input tube (51).

4. The low-noise refrigeration system according to claim 1, characterized in that: The output pipe comprises a first pipe section and a second pipe section, the first pipe section is connected to the capillary noise reduction device (5), the second pipe section is connected to the evaporator (6), and the diameter of the second pipe section is larger than the diameter of the first pipe section.

5. The low-noise refrigeration system according to claim 4, characterized in that: The one-way valve is arranged in the first pipe section.

6. A refrigeration device, characterized in that: The invention comprises the low-noise refrigeration system according to any one of claims 1 to 5.

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