Drainage chassis anti-freezing structure for northern heating

Abstract

The utility model relates to a northern heating drainage chassis anti-freezing structure which comprises an air conditioning system and a drainage chassis, the air conditioning system comprises a compressor, a condenser, an expansion valve and an evaporator, the drainage chassis is arranged at the bottom of the condenser, a drainage opening is formed in the drainage chassis, and the drainage chassis is used for draining condensate water generated in the defrosting process. A refrigerant pipeline between the expansion valve and the evaporator penetrates through the drainage base plate, when the air conditioning system conducts heating, a refrigerant forms medium-temperature and medium-pressure liquid after passing through the expansion valve, and the medium-temperature and medium-pressure liquid passes through the drainage base plate so that the temperature of the drainage base plate can be increased. When the air conditioning system heats, the medium-temperature medium-pressure liquid refrigerant passing through the expansion valve flows through the drainage chassis, so that the temperature of the drainage chassis is increased. Therefore, the condensed water on the base plate cannot be frozen due to low temperature, so that the condensed water can be smoothly discharged.

Description

Technical Field

[0001] The utility model relates to a drainage chassis antifreeze structure for heating in northern China. Background Art

[0002] During heating in the north, when the air conditioning system is running at a low ambient temperature (less than -7 degrees), it is often encountered that the condensed water generated by the outdoor condenser defrosting during the user's activation of the heating function cannot be discharged in time. Due to the low ambient temperature, the condensed water generated during the defrosting process is not discharged in time, and some of it will remain in the chassis, that is, the bottom of the condenser.

[0003] When the defrost mode ends, the condensed water that has not been drained away in time will freeze quickly, causing ice blockage in the chassis and then blocking the drain port.

[0004] If the air conditioning system is operated for a long time under such conditions, ice will accumulate more and more, and eventually the condenser will be frozen as a whole, affecting the normal operation and efficiency of the air conditioning system. This phenomenon not only reduces the defrosting effect of the air conditioning system, but may also cause equipment failure and increase maintenance costs. Utility Model Content

[0005] The purpose of the utility model is to provide a drainage pan antifreeze structure for northern heating that can effectively prevent condensed water from freezing in a low temperature environment, ensure smooth drainage, and improve the efficiency and reliability of the air-conditioning system operating at low ambient temperatures. It is particularly suitable for the problem of removing defrosted condensed water at low ambient temperatures during northern heating.

[0006] The purpose of the utility model is achieved in this way:

[0007] A drainage chassis antifreeze structure for northern heating includes an air-conditioning system and a drainage chassis. The air-conditioning system includes a compressor, a condenser, an expansion valve and an evaporator. The drainage chassis is arranged at the bottom of the condenser. The drainage chassis has a drainage port. The drainage chassis is used to discharge condensed water generated during the defrosting process. The refrigerant pipeline between the expansion valve and the evaporator passes through the drainage chassis. When the air-conditioning system is heating, the refrigerant forms a medium-temperature and medium-pressure liquid after passing through the expansion valve. The medium-temperature and medium-pressure liquid passes through the drainage chassis to increase the temperature of the drainage chassis.

[0008] Prevent the drain pan from freezing: When the air conditioning system is heating, the medium-temperature and medium-pressure liquid refrigerant after passing through the expansion valve flows through the drain pan, raising the temperature of the drain pan. In this way, the condensed water on the pan will not freeze due to the low temperature, thus ensuring that the condensed water can be discharged smoothly.

[0009] Improve system reliability: Since condensed water can be discharged in time, it avoids the blockage of the drain outlet due to ice, prevents chassis ice blockage caused by ice accumulation, and ensures the normal operation of the air-conditioning system in a low temperature environment.

[0010] Improve defrosting efficiency: This design prevents the condensed water generated during the defrosting process from accumulating and freezing at the bottom of the condenser, thereby ensuring the efficient defrosting process and avoiding the problem of incomplete defrosting.

[0011] Extend equipment life: Preventing the condenser and drain pan from freezing in cold temperatures can reduce the need for frequent maintenance and repairs, thereby extending the life of the air conditioning system and reducing maintenance costs.

[0012] Adapt to low temperature environment: It is particularly suitable for air-conditioning systems under low ambient temperature during heating in the north. It solves the problem of removing defrosting condensed water under cold climate conditions and ensures the reliable operation of the system in extreme weather conditions.

[0013] Energy saving: By effectively preventing the chassis from icing, the extra energy consumption caused by incomplete defrosting can be reduced, and the energy utilization efficiency of the entire system can be improved.

[0014] The purpose of the utility model can also be solved by the following technical measures:

[0015] Furthermore, the air conditioning system further comprises a four-way valve, and the compressor, condenser, expansion valve and evaporator are respectively connected to the four-way valve.

[0016] Flexible switching between heating and cooling: The addition of a four-way valve allows the air conditioning system to flexibly switch between heating and cooling modes to adapt to different climate needs. It can provide heating in winter and cooling in summer, with one machine for multiple uses, enhancing the user experience.

[0017] Improve system efficiency: The four-way valve changes the refrigerant flow direction, allowing the same system to perform both heat pump heating and conventional cooling operations. This design improves the overall energy efficiency of the equipment and saves energy.

[0018] Simplified system design: A system with an integrated four-way valve is simpler than a traditional dual system (separate heating and cooling systems). This integration reduces system complexity and the chance of possible failure, while also reducing installation and maintenance costs.

[0019] Enhanced defrosting efficiency: In heating mode, the four-way valve changes the roles of the condenser and evaporator, and the outdoor evaporator becomes the condenser. This configuration can use the system's own heat to effectively defrost the outdoor unit, ensuring efficient operation of the system in cold environments.

[0020] Furthermore, the drainage chassis is a heat-conducting chassis.

[0021] Accelerate heat conduction: The heat-conducting chassis can transfer heat from the refrigerant pipeline to every part of the chassis more quickly through excellent heat-conducting materials and design. This fast and effective heat conduction ensures uniform temperature on the surface of the drain chassis, accelerates the evaporation of condensed water, and thus prevents the formation of ice.

[0022] Furthermore, the drainage chassis is provided with a heat conduction channel, and the refrigerant pipeline between the expansion valve and the evaporator passes through the heat conduction channel.

[0023] Optimized heat distribution: The heat conduction channel can more effectively disperse the heat of the refrigerant pipes throughout the drain pan. This uniform heat distribution helps maintain the temperature of the pan surface, ensuring that condensed water does not freeze even in cold environments.

[0024] Improve thermal efficiency: The heat energy of the refrigerant when it flows between the expansion valve and the evaporator is directly used to heat the drainage chassis through the heat conduction channel, which improves the direct utilization rate of energy and reduces energy consumption.

[0025] Furthermore, the heat conducting channel is a U-shaped heat conducting channel, and the inlet of the U-shaped heat conducting channel and the outlet of the U-shaped heat conducting channel are on the same surface.

[0026] Enhanced heat exchange efficiency: The U-shaped channel increases the path length of the refrigerant in the drain pan, thereby improving heat exchange efficiency. The refrigerant stays in the channel longer, giving it more time to transfer heat to the drain pan, thereby more effectively raising the pan temperature.

[0027] Uniform heating: Due to the design of the U-shaped heat conduction channel, the chassis heats more evenly, helping to avoid local overheating or unheated areas, which can more evenly prevent condensation from freezing in any area.

[0028] Simplified manufacturing and installation: Setting the inlet and outlet on the same surface simplifies the layout and connection of the pipeline, reduces the complexity of installation and potential interface leakage problems, and improves the reliability and durability of the system.

[0029] Reduced space occupation: The compact design of the U-shaped channel makes the overall size of the drainage chassis smaller, suitable for applications with limited space, such as compact air-conditioning systems or integrated equipment.

[0030] The beneficial effects of the utility model are as follows:

[0031] In the utility model, when the air conditioning system is heating, the medium-temperature medium-pressure liquid refrigerant after passing through the expansion valve flows through the drainage chassis, so that the temperature of the drainage chassis is increased. In this way, the condensed water on the chassis will not freeze due to the low temperature, thereby ensuring that the condensed water can be discharged smoothly.

[0032] The utility model can discharge condensed water in time, thus avoiding blockage of the drain port due to ice formation, preventing ice blockage of the chassis due to ice accumulation, and ensuring the normal operation of the air conditioning system in a low temperature environment.

[0033] The U-shaped channel of the utility model increases the path length of the refrigerant in the drainage chassis, thereby improving the heat exchange efficiency. The refrigerant stays in the channel for a longer time, giving it more time to transfer heat to the drainage chassis, thereby more effectively increasing the chassis temperature.

[0034] The utility model arranges the inlet and the outlet on the same surface, simplifies the layout and connection of the pipeline, reduces the complexity of installation and potential interface leakage problems, and improves the reliability and durability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the drainage pan antifreeze structure for northern heating.

[0036] Figure 2 Schematic diagram of a condenser with a drainage chassis antifreeze structure for northern heating.

[0037] Figure 3 Schematic diagram of the drainage chassis. DETAILED DESCRIPTION

[0038] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0039] Combination Figures 1 to 3 As shown, a drainage chassis antifreeze structure for northern heating includes an air-conditioning system and a drainage chassis 1. The air-conditioning system includes a compressor 2, a condenser 3, an expansion valve 4 and an evaporator 5. The drainage chassis 1 is arranged at the bottom of the condenser 3. The drainage chassis 1 has a drain port 11. The drainage chassis 1 is used to discharge condensed water generated during the defrosting process. The refrigerant pipeline 8 between the expansion valve 4 and the evaporator 5 passes through the drainage chassis 1. When the air-conditioning system is heating, the refrigerant passes through the expansion valve 4 to form a medium-temperature and medium-pressure liquid. The medium-temperature and medium-pressure liquid passes through the drainage chassis 1 to increase the temperature of the drainage chassis 1.

[0040] Furthermore, the air conditioning system further comprises a four-way valve 6 , and the compressor 2 , the condenser 3 , the expansion valve 4 and the evaporator 5 are respectively connected to the four-way valve 6 .

[0041] Furthermore, the drainage chassis 1 is a heat-conducting chassis.

[0042] Furthermore, the drain chassis 1 is provided with a heat conduction channel, and the refrigerant pipeline 8 between the expansion valve 4 and the evaporator 5 passes through the heat conduction channel.

[0043] Further, the heat conducting channel is a U-shaped heat conducting channel 7 , and an inlet 71 of the U-shaped heat conducting channel 7 and an outlet 72 of the U-shaped heat conducting channel 7 are located on the same surface.

[0044] Here’s how it works:

[0045] Refrigerant flow in heating mode:

[0046] The compressor 2 compresses the low-pressure and low-temperature refrigerant gas into a high-pressure and high-temperature gas.

[0047] The high-temperature and high-pressure gas enters the condenser 3, dissipates heat inside the condenser 3, and is transformed into a high-temperature and high-pressure liquid refrigerant.

[0048] The four-way valve 6 controls the flow direction of the refrigerant so that the refrigerant can enter the expansion valve 4 .

[0049] The expansion valve 4 expands the high-temperature and high-pressure liquid refrigerant into a medium-temperature and medium-pressure liquid refrigerant.

[0050] Heating of thermally conductive chassis:

[0051] The liquid refrigerant at medium temperature and medium pressure passes through the heat conduction channel, which is a U-shaped heat conduction channel 7 , so that the refrigerant forms a longer path in the drainage chassis 1 .

[0052] The design of the U-shaped heat conduction channel 7 allows the refrigerant to stay in the drain pan 1 for a long time, transferring heat to the drain pan 1, so that the drain pan 1 is effectively heated and the temperature of the drain pan 1 is above 0°.

[0053] The heating of the heat-conducting bottom plate helps to prevent the condensed water on the drainage bottom plate 1 from freezing, thus maintaining smooth drainage.

[0054] Function of drainage chassis 1:

[0055] The drainage bottom plate 1 is located at the bottom of the condenser 3 and is provided with a drainage port 11 for draining the condensed water generated during the defrosting process.

[0056] The drainage chassis 1 is heated through the heat conduction channel in the heating mode to keep the chassis temperature elevated, prevent condensed water from freezing, and ensure smooth drainage.

[0057] Through the above working principle, the antifreeze structure of the drainage chassis 1 can effectively prevent condensed water from freezing during heating in the north, thereby ensuring the normal operation of the air-conditioning system.

Claims

1. A drainage chassis antifreeze structure for heating in the north, comprising an air conditioning system and a drainage chassis, wherein the air conditioning system comprises a compressor, a condenser, an expansion valve and an evaporator, the drainage chassis is arranged at the bottom of the condenser, and the drainage chassis has a drainage port, and the drainage chassis is used to discharge condensed water generated during the defrosting process, and is characterized in that: The refrigerant pipeline between the expansion valve and the evaporator passes through the drain pan. When the air conditioning system is heating, the refrigerant passes through the expansion valve to form a medium-temperature and medium-pressure liquid. The medium-temperature and medium-pressure liquid passes through the drain pan to increase the temperature of the drain pan.

2. The antifreeze structure of the drainage chassis for heating in northern China according to claim 1 is characterized by: The air conditioning system further comprises a four-way valve, and the compressor, the condenser, the expansion valve and the evaporator are respectively connected to the four-way valve.

3. The drainage chassis antifreeze structure for heating in northern China according to claim 1 is characterized by: The drainage chassis is a heat-conducting chassis.

4. The drainage chassis antifreeze structure for heating in northern China according to claim 3 is characterized by: The drainage bottom plate is provided with a heat conduction channel, and the refrigerant pipeline between the expansion valve and the evaporator passes through the heat conduction channel.

5. The drainage chassis antifreeze structure for heating in northern China according to claim 4 is characterized by: The heat-conducting channel is a U-shaped heat-conducting channel, and the inlet and the outlet of the U-shaped heat-conducting channel are located on the same surface.

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