Method for strengthening heat dissipation of condenser of vertical transparent door refrigerated cabinet

Abstract

The invention relates to the technical field of refrigerated cabinets, in particular to a method for strengthening heat dissipation of a condenser of a vertical transparent door refrigerated cabinet, which comprises the following steps: S1, constructing a refrigeration cycle system; s2, refrigerants discharged by the compressor enter an electromagnetic four-way valve through a condenser connecting pipe, the electromagnetic four-way valve has two working states, and in the normal state, the refrigerants sequentially pass through an outer condenser and an inner condenser and then enter a capillary tube through the electromagnetic four-way valve; in a set state, the opening and closing state in the electromagnetic four-way valve is changed, and a refrigerant firstly enters the inner condenser and then enters the outer condenser; and S3, the refrigerant enters the evaporator through the capillary tube and returns to the air suction end of the compressor through the air return pipe connecting pipe, and a complete refrigeration cycle is formed. According to the method, a composite refrigeration cycle system comprising an outer condenser and an inner condenser is constructed, flexible control of an electromagnetic four-way valve and an electromagnetic valve set is combined, and the heat dissipation bottleneck of a traditional single condenser under the space limited working condition is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a method for enhancing heat dissipation of a condenser of a vertical refrigerator with a transparent door. Background Art

[0002] In the field of refrigerated cabinet technology, vertical transparent-door refrigerated cabinets are essential equipment for storing and displaying goods. The heat dissipation of their condensers plays a key role in the equipment's operating efficiency, energy consumption, and service life. With the diversification of commercial spaces, the installation environment for refrigerated cabinets has become increasingly complex, and traditional condenser heat dissipation methods face numerous challenges. Currently, common condenser installation methods for vertical transparent-door refrigerators include integrating the condenser into the back or bottom press chamber. Heat dissipation is typically achieved through natural convection or forced air cooling. In actual applications, due to space constraints, display cabinets are often densely arranged, and the distance between the press chambers of adjacent display cabinets may be too small, or the distance between the back of the press chamber and the wall may be insufficient. For example, in one supermarket, to maximize space utilization, a large number of vertical transparent-door refrigerators were closely arranged, with the press chambers of some cabinets almost touching the wall. Under these harsh operating conditions, the condenser's heat dissipation channels are severely obstructed, significantly reducing heat exchange efficiency. This directly leads to frequent starts and stops of the compressor, significantly increasing energy consumption and shortening equipment life. Traditional condenser designs are primarily based on standard operating conditions, with little consideration for abnormal heat dissipation conditions caused by site constraints. Existing methods for addressing heat dissipation, such as increasing fin area, increasing fan power and layout, adding air shrouds to improve airflow distribution, and adjusting fan blade or fin angles, are ineffective in complex installation environments. For example, patent document CN202121945111.1 proposes directing heat generated by the condenser to the top of the cabinet for discharge. While this addresses the issue of the cabinet's back resting against the wall to some extent, it fails to effectively address the heat accumulation caused by heat being discharged into the room. When the condenser's inlet air temperature exceeds a certain threshold, heat dissipation efficiency continues to decline significantly. Furthermore, increasing fan speed increases noise and energy consumption, while simply increasing fin area can hinder airflow when space is limited, further degrading heat dissipation. Therefore, achieving efficient heat dissipation within a limited space while balancing energy efficiency and equipment reliability has become a pressing technical challenge in this field. Summary of the Invention

[0003] The present invention aims to provide a method for enhancing condenser heat dissipation in upright, transparent-door refrigerators, addressing the aforementioned background art issue of severe obstruction of the condenser's heat dissipation channels, significantly reducing heat exchange efficiency. This directly leads to frequent compressor starts and stops, significantly increasing energy consumption and shortening equipment life.

[0004] To achieve the above object, the present invention provides a method for enhancing the heat dissipation of a condenser of a vertical transparent door refrigerator, comprising the following steps: S1. Build a refrigeration cycle system, including a compressor, an evaporator, an external condenser, an internal condenser, a solenoid four-way valve, a solenoid valve group, a thermostat, a capillary tube, a condensing fan, an evaporating fan, a condenser connecting pipe, and a return air pipe connecting pipe; S2. The refrigerant discharged from the compressor enters the electromagnetic four-way valve through the condenser connecting pipe. The electromagnetic four-way valve has two working states. In the normal state, the refrigerant passes through the external condenser and the internal condenser in sequence and then enters the capillary tube through the electromagnetic four-way valve; in the set state, the opening and closing state of the electromagnetic four-way valve changes, and the refrigerant first enters the internal condenser and then enters the external condenser; S3. The refrigerant enters the evaporator through the capillary tube and returns to the suction end of the compressor through the return pipe connecting pipe, forming a complete refrigeration cycle.

[0005] This setup creates a refrigeration cycle system consisting of a compressor, evaporator, external condenser, internal condenser, and a solenoid four-way valve. Refrigerant discharged from the compressor passes through the solenoid four-way valve and, under normal conditions, flows sequentially through the external and internal condensers. Under a set setting, it flows first through the internal condenser, then through the external condenser, and finally through the capillary tube into the evaporator, completing the cycle. The solenoid four-way valve changes the order in which the refrigerant flows through the condenser, achieving different heat dissipation paths.

[0006] Preferably, a solenoid valve group is added to control whether the refrigerant bypasses the inner condenser to achieve independent heat dissipation of the outer condenser.

[0007] This setting adds a solenoid valve group, which can control whether the refrigerant bypasses the inner condenser. When the solenoid valve group is in a specific state, the refrigerant does not flow through the inner condenser, and only the outer condenser works, realizing independent heat dissipation of the outer condenser.

[0008] Preferably, a temperature sensor is provided at the outlet of the external condenser for detecting the temperature of the external condenser outlet, and the temperature sensor is externally connected to a thermostat; when the ambient temperature is high and the working environment of the condensing cabin is relatively harsh, and the temperature of the external condenser outlet is higher than a preset value, the temperature sensor transmits data to the external thermostat, and the external thermostat controls the switch state change of the solenoid valve group, so that the refrigerant flows through the inner condenser and then enters the capillary tube and evaporator; when the ambient temperature drops below a threshold value, the external thermostat controls the switch state change of the solenoid valve group, so that the refrigerant no longer flows through the inner condenser.

[0009] This setting installs a temperature sensor at the outlet of the external condenser. The sensor transmits the detected temperature data to the thermostat. When the temperature at the outlet of the external condenser exceeds a preset value, the thermostat controls the solenoid valve group to allow refrigerant to flow through the internal condenser. When the temperature falls below the threshold, the solenoid valve group is controlled to prevent refrigerant from flowing through the internal condenser. This automatic control of refrigerant flow is achieved through temperature feedback.

[0010] Preferably, the temperature sensor continuously collects the outlet temperature data of the external condenser. When the detection value exceeds the set threshold, the control system switches the state of the solenoid valve group according to a preset program, so that the refrigerant flows through the internal condenser to enhance heat dissipation; during the switching process, when the compressor stops and delays for a certain period of time, the state of the solenoid valve group is switched to avoid pressure shock caused by starting and stopping the compressor.

[0011] This setting sets a temperature sensor to continuously monitor the condenser outlet temperature. When the temperature exceeds a set threshold, the control system switches the solenoid valve group state. This switching process occurs after the compressor stops and after a certain delay. Continuous monitoring ensures the accuracy of temperature data and delayed switching avoids pressure shock.

[0012] Preferably, by setting up a human-computer interaction interface, the user chooses to enter manual control mode, in which the solenoid valve group is synchronously controlled to determine whether the flow passes through the internal condenser. At this time, the temperature sensor signal is no longer used as a reference signal for opening and closing the solenoid valve group.

[0013] This item sets the human-machine interaction interface, through which the user can select the manual control mode. In this mode, the solenoid valve group is directly controlled to determine whether the refrigerant flows through the internal condenser, which is not affected by the temperature sensor signal.

[0014] Preferably, the internal condenser is installed close to the box shell and close to the glass door. By activating the composite heat dissipation of the external condenser and the internal condenser, the internal condenser realizes the anti-dew pipe function to slow down the occurrence of condensation. By adjusting the electromagnetic four-way valve, the heat dissipation position of the system can be changed to enhance the anti-condensation function.

[0015] Preferably, when the electromagnetic four-way valve is in a normal state, the refrigerant enters the external condenser, which is designed with coil fins for heat dissipation and is fixed in the bottom cabin; the external condenser is connected to the internal condenser, and the internal condenser is connected back to the electromagnetic four-way valve; the electromagnetic four-way valve is switched to an open and closed state so that the refrigerant flows through the internal condenser first and then enters the external condenser.

[0016] This setting specifies that under the normal state of the solenoid four-way valve, refrigerant flows into the external condenser. The external condenser is a coil-fin design fixed in the bottom compartment and connected to the internal condenser. Switching the solenoid four-way valve position changes the refrigerant flow so that it first flows through the internal condenser and then enters the external condenser. It also specifies the structure and installation location of the external condenser, as well as the specific flow changes when the solenoid four-way valve is switched.

[0017] Preferably, the solenoid valve group is two sets of solenoid three-way valves, which are respectively installed at the outlet branches of the external condenser and the internal condenser, and realize the switching of single and double condenser modes by controlling whether the refrigerant flows around the internal condenser.

[0018] This item sets the solenoid valve group to be two sets of solenoid three-way valves, which are installed at the outlet branches of the external condenser and the internal condenser respectively. By controlling their opening and closing states, it is determined whether the refrigerant flows around the internal condenser, and then the single and double condenser modes are switched.

[0019] Preferably, the inner condenser adopts a coil structure and is close to the inner wall of the cabinet side panel, and is installed near the glass door of the display cabinet; the two bypasses at the outlet end of the inner condenser only keep one of the bypasses in a flow state at the same time.

[0020] The internal condenser utilizes a coil structure, tightly attached to the inner wall of the cabinet side panels and installed near the glass door. Only one of the two bypasses at its outlet flows at a time. The coil structure increases the heat dissipation area, while its location near the glass door helps prevent condensation. Controlled bypass flow ensures stable refrigerant flow. This improves the internal condenser's heat dissipation efficiency. The installation close to the inner wall of the cabinet side panels fully utilizes the cabinet space for heat dissipation; its location near the glass door enhances condensation prevention; and controlled bypass at the outlet ensures orderly refrigerant flow, ensuring the effective function of the internal condenser.

[0021] Preferably, in the refrigeration cycle, the condensing fan and the evaporating fan act on the external condenser and the evaporator respectively, thereby achieving forced convection heat exchange.

[0022] During the refrigeration cycle, the condensing fan acts on the external condenser, while the evaporating fan acts on the evaporator. Both achieve forced convection heat exchange, accelerating heat exchange. This forced convection significantly improves the heat dissipation efficiency of the external condenser and the cooling efficiency of the evaporator, ensuring the cooling effect inside the refrigerator while also improving the operating efficiency of the entire refrigeration system.

[0023] Compared with the prior art, the present invention has the following beneficial effects: 1. This method for enhancing condenser heat dissipation in vertical transparent-door refrigerators improves heat dissipation efficiency by constructing a composite refrigeration cycle system consisting of an external condenser and an internal condenser, combined with the flexible control of a solenoid four-way valve and solenoid valve assembly. This effectively addresses the heat dissipation bottleneck of traditional single condensers in space-constrained operating conditions. When the external condenser outlet temperature exceeds a set threshold, the system automatically switches to a coordinated internal and external condenser mode. By leveraging the internal condenser's close proximity to the inner wall of the cabinet side panel, the cabinet's surface area is utilized for auxiliary heat dissipation, significantly expanding the heat dissipation area. 2. In the method of enhancing the heat dissipation of the condenser of this vertical transparent door refrigerator, in terms of energy consumption control and equipment protection, this method realizes the intelligent switching of the condenser working mode through the linkage control of the temperature sensor and the thermostat, avoiding the disadvantage of the traditional solution that simply relies on increasing the fan power to enhance heat dissipation. When the ambient temperature is suitable, the system can control the refrigerant to bypass the inner condenser through the solenoid valve group, relying only on the outer condenser for independent heat dissipation, reducing unnecessary energy consumption; and under high temperature or space-constrained working conditions, the inner condenser is started to assist in heat dissipation. At the same time, the compressor shutdown delay mechanism introduced during the switching process effectively avoids the pressure shock caused by the start and stop of the compressor. Combined with the real-time monitoring of the system status by the temperature sensor, the probability of frequent start and stop of the compressor is significantly reduced, thereby improving the stability of equipment operation. 3. The enhanced condenser heat dissipation method for this vertical transparent-door refrigerator enhances functional diversity and adaptability by positioning the internal condenser close to the display case's glass door. This not only enhances heat dissipation but also serves as an anti-condensation pipe. By adjusting the solenoid four-way valve to alter the refrigerant flow sequence, the anti-condensation effect can be enhanced. This is particularly effective in high-humidity environments, effectively mitigating condensation on the glass door and ensuring the display case's visual appeal. Furthermore, the manual control mode provides users with flexible operating options, allowing the internal condenser to be activated based on actual environmental requirements, adapting to different installation scenarios and usage requirements, and significantly improving the device's adaptability to complex commercial environments. 4. In terms of system reliability and scalability, the modular design concept of the vertical transparent door refrigerator enhances the heat dissipation of the condenser. The internal condenser, solenoid valve group and other components can be independently installed or removed, facilitating subsequent maintenance and upgrades. The solenoid valve group, consisting of two sets of solenoid three-way valves, controls the refrigerant bypass path to achieve stable switching between single and double condenser modes. Combined with remote monitoring and fault diagnosis functions, it can promptly detect and address problems such as abnormal solenoid valve operation and sensor failure. At the same time, the system supports deep compatibility with variable frequency refrigeration systems. Through extended design, it can achieve distributed heat dissipation management of multi-split systems, providing an efficient solution for large-scale commercial refrigeration scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the principle of the first working state of the present invention; Figure 3 This is a schematic diagram of the principle of the second working state of the present invention; Figure 4 This is a schematic diagram of the system control logic in the present invention; The meaning of each number in the figure is: 1. Compressor; 2. Evaporator; 3. External condenser; 4. Internal condenser; 5. Solenoid four-way valve; 6. Solenoid valve group; 7. Thermostat; 8. Capillary tube; 9. Condensing fan; 10. Evaporating fan; 11. Condenser connecting pipe; 12. Return air pipe connecting pipe. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 efforts are within the scope of protection of the present invention.

[0026] The present invention provides a method for enhancing the heat dissipation of the condenser of a vertical transparent door refrigerator, such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, it includes the following steps, S1. Construct a refrigeration cycle system, including a compressor 1, an evaporator 2, an external condenser 3, an internal condenser 4, an electromagnetic four-way valve 5, an electromagnetic valve group 6, a thermostat 7, a capillary tube 8, a condensing fan 9, an evaporating fan 10, a condenser connecting pipe 11, and a return air pipe connecting pipe 12; S2. The refrigerant discharged from the compressor 1 enters the electromagnetic four-way valve 5 through the condenser connecting pipe 11. The electromagnetic four-way valve 5 has two working states. In the normal state, the refrigerant passes through the external condenser 3 and the internal condenser 4 in sequence, and then enters the capillary tube 8 through the electromagnetic four-way valve 5. In the set state, the opening and closing state of the electromagnetic four-way valve 5 changes, and the refrigerant first enters the internal condenser 4 and then enters the external condenser 3. S3. The refrigerant enters the evaporator 2 through the capillary tube 8 and returns to the suction end of the compressor 1 through the return pipe connecting pipe 12, forming a complete refrigeration cycle.

[0027] A refrigeration cycle system is constructed, comprising compressor 1, evaporator 2, external condenser 3, internal condenser 4, electromagnetic four-way valve 5, electromagnetic valve assembly 6, thermostat 7, capillary tube 8, condensing fan 9, evaporating fan 10, condenser connecting pipe 11, and return air connecting pipe 12. Refrigerant discharged from compressor 1 enters electromagnetic four-way valve 5 through condenser connecting pipe 11. Under normal conditions, it flows sequentially through external condenser 3 and internal condenser 4. Under set conditions, it flows first through internal condenser 4 and then through external condenser 3, finally entering evaporator 2 through capillary tube 8 and returning to the suction port of compressor 1 through return air connecting pipe 12, completing the cycle. The electromagnetic four-way valve 5 is used to change the order in which the refrigerant flows through the condenser, achieving different heat dissipation paths. This provides a basic refrigeration cycle framework for refrigerators. By using two different refrigerant flow sequences, the heat dissipation method can be flexibly adjusted according to actual conditions, adapting to different heat dissipation requirements to a certain extent and laying the foundation for subsequent enhanced heat dissipation functions. The coordinated operation of components 1-12 ensures the stable operation of the refrigeration cycle.

[0028] In this embodiment, a solenoid valve group 6 is additionally provided to control whether the refrigerant bypasses the inner condenser 4 , thereby achieving independent heat dissipation of the outer condenser 3 .

[0029] The addition of a solenoid valve assembly 6 controls whether the refrigerant bypasses the inner condenser 4. When the solenoid valve assembly 6 is in a specific state, the refrigerant does not flow through the inner condenser 4, and only the outer condenser 3 operates, achieving independent heat dissipation from the outer condenser 3. This increases the flexibility of the system. When the ambient temperature is suitable and the outer condenser 3 can meet the heat dissipation requirements, the refrigerant bypasses the inner condenser 4, reducing unnecessary energy consumption and lowering system operating costs. The addition of the solenoid valve assembly 6 makes system control more precise.

[0030] Specifically, a temperature sensor is provided at the outlet of the external condenser 3 for detecting the temperature of the outlet of the external condenser 3, and the temperature sensor is externally connected to the thermostat 7; when the ambient temperature is high and the working environment of the condensing cabin is relatively harsh, and the temperature of the outlet of the external condenser 3 is higher than the preset value, the temperature sensor transmits data to the external thermostat 7, and the external thermostat 7 controls the switch state change of the solenoid valve group 6, so that the refrigerant flows through the internal condenser 4 and then enters the capillary tube 8 and the evaporator 2; when the ambient temperature drops below the threshold value, the external thermostat 7 controls the switch state change of the solenoid valve group 6, so that the refrigerant no longer flows through the internal condenser 4.

[0031] A temperature sensor is provided at the outlet of the external condenser 3, and the sensor transmits the detected temperature data to the thermostat 7. When the outlet temperature of the external condenser 3 is higher than the preset value, the thermostat 7 controls the solenoid valve group 6 to allow the refrigerant to flow through the internal condenser 4; when the temperature is lower than the threshold, the solenoid valve group 6 is controlled to prevent the refrigerant from flowing through the internal condenser 4. Automatic control of the refrigerant flow direction is achieved through temperature feedback. Intelligent automatic adjustment of the heat dissipation system is achieved, and it can automatically determine whether the internal condenser 4 is needed to participate in the heat dissipation based on the outlet temperature of the external condenser 3. This ensures that when the ambient temperature is high and the heat dissipation conditions are poor, the heat dissipation is enhanced through the internal condenser 4 to avoid equipment problems caused by insufficient heat dissipation; when the temperature is suitable, the use of the internal condenser 4 is reduced to save energy. The cooperation between the thermostat 7 and the temperature sensor improves the automation level of the system.

[0032] Furthermore, the temperature sensor continuously collects the outlet temperature data of the external condenser 3. When the detection value exceeds the set threshold, the control system switches the state of the solenoid valve group 6 according to the preset program, so that the refrigerant flows through the internal condenser 4 to enhance heat dissipation; during the switching process, when the compressor 1 stops and delays for a certain period of time, the state of the solenoid valve group 6 is switched to avoid the pressure shock caused by the start and stop of the compressor 1.

[0033] The temperature sensor continuously collects the outlet temperature of the external condenser 3. When it exceeds the set threshold, the control system switches the state of the solenoid valve group 6, and the switching process is carried out after the compressor 1 stops and a certain period of time is delayed. Continuous monitoring is used to ensure the accuracy of temperature data, and delayed switching avoids pressure shock. This further improves the stability and reliability of system operation. Continuous temperature collection ensures real-time control of the heat dissipation status and timely starts the internal condenser 4 to enhance heat dissipation; the delayed switching mechanism effectively avoids the pressure shock caused by the start and stop of the compressor 1, protects system components, and extends the service life of the equipment. The stable switching of the solenoid valve group 6 is the key to ensuring the effect.

[0034] Furthermore, by setting up a human-computer interaction interface, the user chooses to enter the manual control mode, in which the solenoid valve group 6 is synchronously controlled to determine whether the flow passes through the internal condenser 4. At this time, the signal of the temperature sensor is no longer used as a reference signal for opening and closing the solenoid valve group 6.

[0035] A human-machine interface allows users to select manual control mode. In this mode, solenoid valve assembly 6 is directly controlled to determine whether refrigerant flows through internal condenser 4, unaffected by temperature sensor signals. This increases user autonomy. When users determine the need for enhanced heat dissipation or other functions based on practical experience or special needs, they can manually control the operating state of internal condenser 4. This improves the system's adaptability to complex environments and special needs, and manual control of solenoid valve assembly 6 provides user convenience.

[0036] Furthermore, the inner condenser 4 is installed close to the box shell and the glass door. By activating the composite heat dissipation of the outer condenser 3 and the inner condenser 4, the inner condenser 4 realizes the anti-dew pipe function to slow down the occurrence of condensation. By adjusting the electromagnetic four-way valve 5, the position of the system heat dissipation can be changed to enhance the anti-condensation function.

[0037] The inner condenser 4 is installed close to the cabinet shell, near the glass door. When the combined heat dissipation of the outer condenser 3 and inner condenser 4 is activated, the inner condenser 4 functions as a condensation prevention pipe. Adjusting the electromagnetic four-way valve 5 changes the heat dissipation position, enhancing the condensation prevention effect. The condensation prevention function is achieved by utilizing the installation position of the inner condenser 4 and the adjustment of the electromagnetic four-way valve 5. While enhancing heat dissipation, it also effectively reduces condensation on the glass door, ensuring the display effect of the refrigerator. This effect is particularly significant in high-humidity environments, enhancing the product's practicality and user experience. The combination of the inner condenser 4 and the electromagnetic four-way valve 5 achieves multifunctionality.

[0038] Furthermore, when the electromagnetic four-way valve 5 is in a normal state, the refrigerant enters the external condenser 3, which is designed with coil fins for heat dissipation and is fixed in the bottom cabin; the external condenser 3 is connected to the internal condenser 4, and the internal condenser 4 is connected back to the electromagnetic four-way valve 5; the electromagnetic four-way valve 5 is switched to an open or closed state so that the refrigerant flows through the internal condenser 4 first and then enters the external condenser 3.

[0039] It is clear that under the normal state of the electromagnetic four-way valve 5, the refrigerant enters the external condenser 3. The external condenser 3 is designed with coil fins and is fixed in the bottom compartment. The external condenser 3 is connected to the internal condenser 4. Switching the state of the electromagnetic four-way valve 5 can change the refrigerant to flow through the internal condenser 4 first and then enter the external condenser 3. The structure and installation position of the external condenser 3, as well as the specific flow direction changes when the electromagnetic four-way valve 5 is switched, are specified. This makes the structure and installation of the external condenser 3 more reasonable and conducive to its heat dissipation function. The clear way of changing the refrigerant flow direction ensures the stable realization of the adjustment function of the electromagnetic four-way valve 5 and ensures the effective operation of the heat dissipation system under different conditions. The structural design of the external condenser 3 improves the basic heat dissipation capacity.

[0040] Furthermore, the solenoid valve group 6 is two sets of solenoid three-way valves, which are respectively installed at the outlet branches of the external condenser 3 and the internal condenser 4, and realize the switching of the single and double condenser modes by controlling whether the refrigerant flows around the internal condenser 4.

[0041] Solenoid valve group 6 comprises two sets of three-way solenoid valves, installed at the outlet branches of external condenser 3 and internal condenser 4, respectively. By controlling their open and closed states, they control whether refrigerant flows around internal condenser 4, thereby switching between single and double condenser modes. Precisely controlling the refrigerant flow direction ensures the reliability and stability of switching between single and double condenser modes, enabling the system to accurately switch operating modes based on actual cooling requirements, further improving cooling efficiency and energy savings. The two sets of three-way solenoid valves, comprising solenoid valve group 6, are the core of this precise control.

[0042] Furthermore, the inner condenser 4 adopts a coil structure and is close to the inner wall of the cabinet side panel and is installed near the glass door of the display cabinet; only one of the two bypasses at the outlet end of the inner condenser 4 is kept in a flow state at the same time.

[0043] The internal condenser 4 adopts a coil structure that is close to the inner wall of the cabinet side panel and is installed near the glass door. Only one of the two bypasses at its outlet is flowing at the same time. The coil structure is used to increase the heat dissipation area. The position close to the glass door is conducive to preventing condensation. The flow control of the bypass ensures the stability of the refrigerant flow. The heat dissipation efficiency of the internal condenser 4 is improved. The installation method close to the inner wall of the cabinet side panel fully utilizes the cabinet space for heat dissipation; the position close to the glass door enhances the anti-condensation effect; the control of the bypass at the outlet ensures the orderly flow of the refrigerant and ensures the effective function of the internal condenser 4. The structure and installation position of the internal condenser 4 are the key to achieving the effect.

[0044] Furthermore, in the refrigeration cycle, the condensing fan 9 and the evaporating fan 10 act on the external condenser 3 and the evaporator 2 respectively, thereby achieving forced convection exchange.

[0045] During the refrigeration cycle, the condensing fan 9 acts on the external condenser 3, and the evaporating fan 10 acts on the evaporator 2. Both achieve forced convection heat exchange, accelerating the heat exchange rate. This forced convection heat exchange significantly improves the heat dissipation efficiency of the external condenser 3 and the cooling efficiency of the evaporator 2, ensuring the cooling effect inside the refrigerator and improving the operating efficiency of the entire refrigeration system. The coordinated operation of the condensing fan 9 and the evaporating fan 10 enhances the heat exchange effect.

[0046] Finally, it should be noted that the external condenser 3, the internal condenser 4, etc. in this embodiment, the electronic components in the above parts are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle area of ​​this device, all the above electrical components are connected respectively through wires. The specific connection means should refer to the working sequence between the electrical components in the above working principle to complete the electrical connection, which are all well-known technologies in the art.

[0047] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for enhancing condenser heat dissipation in a vertical transparent door refrigerator, characterized by: The steps include: S1. Construct a refrigeration cycle system, including a compressor (1), an evaporator (2), an external condenser (3), an internal condenser (4), an electromagnetic four-way valve (5), an electromagnetic valve group (6), a thermostat (7), a capillary tube (8), a condensing fan (9), an evaporating fan (10), a condenser connecting pipe (11), and a return air pipe connecting pipe (12); S2, the refrigerant discharged from the compressor (1) enters the electromagnetic four-way valve (5) through the condenser connecting pipe (11), and the electromagnetic four-way valve (5) has two working states. In the normal state, the refrigerant passes through the external condenser (3) and the internal condenser (4) in sequence, and then enters the capillary tube (8) through the electromagnetic four-way valve (5); in the set state, the opening and closing state of the electromagnetic four-way valve (5) changes, and the refrigerant first enters the internal condenser (4) and then enters the external condenser (3); S3. The refrigerant enters the evaporator (2) through the capillary tube (8) and returns to the suction end of the compressor (1) through the return air pipe connecting pipe (12), forming a complete refrigeration cycle.

2. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: An additional solenoid valve group (6) is provided to control whether the refrigerant bypasses the inner condenser (4) to achieve independent heat dissipation of the outer condenser (3).

3. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 2, characterized in that: A temperature sensor is provided at the outlet of the external condenser (3) for detecting the temperature of the outlet of the external condenser (3), and the temperature sensor is externally connected to a thermostat (7); when the ambient temperature is high and the working environment of the condensing cabin is relatively harsh, and the temperature of the outlet of the external condenser (3) is higher than a preset value, the temperature sensor transmits data to the external thermostat (7), and the external thermostat (7) controls the switching state of the electromagnetic valve group (6) to change, so that the refrigerant flows through the internal condenser (4) and then enters the capillary tube (8) and the evaporator (2); when the ambient temperature drops below a threshold value, the external thermostat (7) controls the switching state of the electromagnetic valve group (6) to change, so that the refrigerant no longer flows through the internal condenser (4).

4. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 3, characterized in that: The temperature sensor continuously collects outlet temperature data of the external condenser (3). When the detected value exceeds a set threshold value, the control system switches the state of the electromagnetic valve group (6) according to a preset program, so that the refrigerant flows through the internal condenser (4) to enhance heat dissipation. During the switching process, when the compressor (1) stops and is delayed for a certain period of time, the state of the electromagnetic valve group (6) is switched to avoid pressure shock caused by the start and stop of the compressor (1).

5. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: By setting the human-machine interaction interface, the user chooses to enter the manual control mode, in which the solenoid valve group (6) is synchronously controlled to determine whether the flow passes through the internal condenser (4). At this time, the signal of the temperature sensor is no longer used as a reference signal for opening and closing the solenoid valve group (6).

6. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: The inner condenser (4) is installed close to the box shell and close to the glass door. By activating the composite heat dissipation of the outer condenser (3) and the inner condenser (4), the inner condenser (4) realizes the anti-dew pipe function to slow down the occurrence of condensation. By adjusting the electromagnetic four-way valve (5), the position of the system heat dissipation can be changed to enhance the anti-dew function.

7. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: When the electromagnetic four-way valve (5) is in a normal state, the refrigerant enters the external condenser (3), and the external condenser (3) is designed with coil fins for heat dissipation and is fixed in the bottom cabin; The outer condenser (3) is connected to the inner condenser (4), and the inner condenser (4) is connected to the electromagnetic four-way valve (5); the electromagnetic four-way valve (5) is switched to an open or closed state so that the refrigerant first flows through the inner condenser (4) and then enters the outer condenser (3).

8. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 7, characterized in that: The solenoid valve group (6) is two sets of solenoid three-way valves, which are respectively installed at the outlet branches of the external condenser (3) and the internal condenser (4), and realize the switching of the single and double condenser modes by controlling whether the refrigerant flows around the internal condenser (4).

9. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: The inner condenser (4) adopts a coil structure and is closely attached to the inner wall of the cabinet side panel, and is installed near the glass door of the display cabinet; the two bypasses at the outlet end of the inner condenser (4) only keep one of the bypasses in a flow state at the same time.

10. The method for enhancing condenser heat dissipation of a vertical transparent door refrigerator according to claim 1, characterized in that: In the refrigeration cycle, the condensing fan (9) and the evaporating fan (10) act on the external condenser (3) and the evaporator (2) respectively, thereby achieving forced convection heat exchange.

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