Refrigeration equipment
By installing a water collection box and pre-cooling pipe in the mechanical chamber of the refrigeration equipment, and combining it with an immersion condenser for pre-cooling, the problem of high condensation temperature is solved, thereby improving the energy efficiency and energy-saving effect of the refrigeration equipment.
Patent Information
- Application Number
- CN202410737076.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-12-09
AI Technical Summary
The condensing temperature of existing refrigeration equipment is usually higher than the ambient temperature, resulting in low system energy efficiency. Furthermore, existing methods to improve energy efficiency are limited by the volume of the refrigeration equipment or may increase noise.
A water collection box is installed in the mechanical chamber of the refrigeration equipment, and the pre-cooling pipe is located in the water collection box. Combined with the immersion condenser, the liquid or air in the mechanical chamber is used for pre-cooling to reduce the condensation temperature of the refrigerant.
Without increasing noise, the energy efficiency of refrigeration equipment is effectively improved, and the condensing temperature is reduced to close to the ambient temperature, thus achieving energy-saving effects.
Smart Images
Figure CN121089355A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of refrigeration equipment technology, and particularly relates to a refrigeration device. Background Technology
[0002] Refrigeration equipment such as refrigerators and freezers usually use vapor compression refrigeration systems for cooling. The condensers in these systems mostly use devices that exchange heat with the air, such as bare tube heat exchangers, wire tube heat exchangers, aluminum tube and aluminum fin heat exchangers, vortex heat exchangers, and microchannel heat exchangers. Because these heat exchange devices exchange heat with the air, the condensing temperature of the refrigeration system is usually 5°C-10°C higher than the ambient temperature, resulting in low system energy efficiency.
[0003] Currently, improving the energy efficiency of refrigeration systems mostly involves increasing the size of the condenser and increasing the air volume of the condenser fan to lower the condensing temperature. However, increasing the size of the condenser is limited by the volume of the refrigeration equipment, and increasing the air volume will increase the operating noise of the equipment. Summary of the Invention
[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a refrigeration device that, by setting a pre-cooling pipe placed in a water receiving box and cooperating with an immersion condenser for condensation, can effectively improve the refrigeration efficiency of the device without increasing noise, and can reduce the condensation temperature to close to the ambient temperature, thereby achieving energy saving.
[0005] In a first aspect, this application provides a refrigeration device, comprising:
[0006] The machine room contains a water collection box, a compressor, a precooling pipe, and an immersion condenser, with the refrigerant passages of the compressor, the precooling pipe, and the immersion condenser connected in sequence.
[0007] The precooling pipe is located inside the water receiving box, which has an opening for collecting liquid from the mechanical chamber. The immersion condenser includes a housing and a condensation assembly. The housing defines a containment space for holding the liquid medium, and the condensation assembly is located within the containment space and submerged in the liquid medium.
[0008] According to the refrigeration equipment of this application, by setting a pre-cooling pipe placed in the water receiving box, the liquid or air in the mechanical chamber is used for pre-cooling, and condensation is carried out in conjunction with the immersion condenser. The refrigeration efficiency of the equipment can be effectively improved without increasing noise, and the condensing temperature can be reduced to close to the ambient temperature to achieve the purpose of energy saving.
[0009] According to one embodiment of this application, the housing includes a top and a bottom disposed opposite to each other, the bottom of the housing is disposed on the base plate of the machine room, and the bottom surface of the water receiving box is disposed on the top of the housing.
[0010] According to one embodiment of this application, the projected area of the water receiving box on the base plate is larger than the projected area of the outer shell on the base plate.
[0011] According to one embodiment of this application, the bottom surface of the water receiving box is stepped, and has a first surface and a second surface connected sequentially from the inside to the outside. The second surface is lower than the first surface, the first surface is in contact with the top of the outer shell, and the second surface is not in contact with the top of the outer shell.
[0012] According to one embodiment of this application, the second surface is in contact with the base plate.
[0013] According to one embodiment of this application, the housing includes a top and a bottom disposed opposite to each other, the top of the housing is disposed on the top plate of the machine room, the bottom surface of the water receiving box is disposed on the bottom plate of the machine room, and the bottom of the housing is spaced apart from the bottom plate.
[0014] According to one embodiment of this application, the projection of the water receiving box on the base plate at least partially coincides with the projection of the outer casing on the base plate, and the opening of the water receiving box is used to collect the liquid medium of the immersion condenser.
[0015] According to one embodiment of this application, the projected area of the water receiving box on the base plate is larger than the projected area of the outer shell on the base plate.
[0016] According to one embodiment of this application, the outer casing is a plastic shell.
[0017] According to one embodiment of this application, the floor of the machine room is a metal plate.
[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is one of the structural schematic diagrams of the refrigeration equipment provided in the embodiments of this application;
[0021] Figure 2 This is a second schematic diagram of the structure of the refrigeration equipment provided in the embodiments of this application;
[0022] Figure 3 This is the third structural schematic diagram of the refrigeration equipment provided in the embodiments of this application;
[0023] Figure 4 This is the fourth schematic diagram of the structure of the refrigeration equipment provided in the embodiments of this application;
[0024] Figure 5 This is a schematic diagram of the structure of the water receiving box provided in the embodiment of this application;
[0025] Figure 6 This is one of the structural schematic diagrams of the refrigeration system of the refrigeration equipment provided in the embodiments of this application;
[0026] Figure 7 This is a second schematic diagram of the structure of the refrigeration system of the refrigeration equipment provided in the embodiments of this application;
[0027] Figure 8 This is the third schematic diagram of the refrigeration system of the refrigeration equipment provided in the embodiments of this application.
[0028] Figure label:
[0029] Housing 110, machine room 120, water receiving box 130, first surface 131, second surface 132.
[0030] Compressor 210, precooling pipe 220, immersion condenser 230, housing 231, condensing assembly 232, bare tube condenser 240, anti-condensation pipe 260, dryer filter 270, evaporator 280, capillary tube 291, return pipe 292.
[0031] First control valve 310, second control valve 320. Detailed Implementation
[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0033] The following is for reference. Figures 1-8 A refrigeration device according to an embodiment of this application is described.
[0034] The refrigeration equipment in this application embodiment can be understood as a broad refrigeration storage device, including but not limited to freezers, refrigerators, display cases, beverage cabinets, wine cabinets, refrigerated display cases, and refrigerated vending machines, etc. Refrigeration equipment has diverse structural forms and a wide range of applications.
[0035] like Figure 1 As shown, the refrigeration equipment includes a machine room 120, in which a water receiving box 130, a compressor 210, a precooling pipe 220, and an immersion condenser 230 are arranged.
[0036] It is understood that the refrigeration equipment includes a shell 110 and an inner liner. The inner liner is installed inside the shell 110 to form a storage compartment. The shell 110 also forms a mechanical compartment 120, which is used to house components such as the compressor 210 and the condenser.
[0037] In actual implementation, the mechanical room 120 can be located at the bottom of the refrigeration equipment housing 110, and the bottom surface of the mechanical room 120 can be provided with a base plate for installing components such as the compressor 210 and condenser.
[0038] It should be noted that the refrigeration system of a refrigeration equipment can achieve refrigeration in four processes: refrigerant compression, refrigerant condensation, refrigerant throttling, and refrigerant evaporation.
[0039] During the refrigerant compression process, low-temperature, low-pressure refrigerant is drawn into the compressor 210, compressed by the compressor 210 into high-temperature, high-pressure refrigerant gas, and then discharged to the condenser.
[0040] During the refrigerant condensation process, the high-temperature and high-pressure refrigerant gas dissipates heat through the condenser, and its temperature gradually decreases, cooling into saturated vapor at room temperature and high pressure. It is then further cooled into saturated liquid, at which point the temperature no longer decreases. This temperature is called the condensation temperature.
[0041] During the refrigerant throttling process, the saturated liquid refrigerant after condensation flows into the capillary tube 291 after the moisture and impurities are filtered out by the dryer filter 270. The refrigerant is throttled and depressurized through the capillary tube 291, and the refrigerant becomes a room temperature, low pressure wet vapor.
[0042] During the refrigerant evaporation process, the refrigerant begins to absorb heat and vaporize in the evaporator 280, and the temperature of the evaporator 280 and its surroundings decreases, achieving cooling of the compartment. The refrigerant becomes a low-temperature, low-pressure gas, and the refrigerant that comes out of the evaporator 280 returns to the compressor 210.
[0043] In this embodiment, the refrigerant passages of the compressor 210, the precooling pipe 220, and the immersion condenser 230 are connected in sequence. That is, the high-temperature and high-pressure superheated refrigerant gas discharged from the compressor 210 is condensed in the precooling pipe 220 and then enters the immersion condenser 230 for condensation.
[0044] like Figure 1 As shown, the precooling pipe 220 is located inside the water receiving box 130, which has an opening for collecting liquid in the machine room 120.
[0045] The water collection box 130 is used to collect liquid in the machine room 120. When the refrigeration equipment is an air-cooled product, the defrosting water of the evaporator 280 can be led out to the water collection box 130 through a pipe. The high-temperature superheated refrigerant discharged by the compressor 210 into the pre-cooling pipe 220 exchanges heat with the defrosting water.
[0046] The precooling pipe 220 condenses the refrigerant and is a heat exchange pipe. Different shapes, materials and sizes of precooling pipes 220 can be selected according to the type of refrigerant and refrigeration requirements.
[0047] In this embodiment, the refrigerant temperature in the precooling pipe 220 decreases and condenses, and the temperature entering the immersion condenser 230 decreases, which can effectively improve the condensation effect during the refrigerant condensation process and reduce the condensation temperature; the defrost water temperature in the water receiving box 130 increases and evaporates, ensuring the normal defrosting function of the refrigeration equipment and preventing defrost water overflow from affecting the normal operation of other components in the machine room 120.
[0048] In this embodiment, the water receiving box 130 is provided with an opening to facilitate the collection of liquid in the machine room 120 and the evaporation of the liquid collected by the water receiving box 130.
[0049] Understandably, once the defrost water in the water collection box 130 has completely evaporated, the high-temperature superheated refrigerant discharged by the compressor 210 into the precooling pipe 220 exchanges heat with the air, resulting in natural convection cooling.
[0050] In actual operation, to improve the condensation effect of the immersion condenser 230, after the defrosting water in the water receiving box 130 has evaporated, liquid can be added to the water receiving box 130 to achieve the function of pre-cooling the refrigerant.
[0051] The immersion condenser 230 of the refrigeration equipment includes a housing 231 and a condensation assembly 232. The housing 231 defines a containment space for holding a liquid medium, and the condensation assembly 232 is located within the containment space and is submerged in the liquid medium.
[0052] In actual operation, the precooling pipe 220 and the condensing component 232 of the immersion condenser 230 are connected. The refrigerant coming out of the precooling pipe 220 enters the condensing component 232 of the immersion condenser 230 and exchanges heat with the liquid medium in the outer shell 231 to condense the refrigerant.
[0053] The outer casing 231 defines the containment space, and the condenser assembly 232 is located within the containment space. The outer casing 231 can be a closed structure, and the liquid medium inside the outer casing 231 will not evaporate due to heat exchange, ensuring that the condenser assembly 232 can always be below the liquid surface of the liquid medium, so that the refrigerant entering the condenser assembly 232 can exchange heat with the liquid medium.
[0054] In actual operation, the liquid medium inside the outer casing 231 can be water, or an aqueous solution such as salt water with water as the main carrier, or other liquids. Different types of liquid media can be selected according to the actual refrigeration requirements of the refrigeration equipment.
[0055] like Figure 6 As shown, the refrigeration system of the refrigeration equipment may include components such as compressor 210, precooling pipe 220, immersion condenser 230, anti-condensation pipe 260, dryer filter 270, capillary tube 291, evaporator 280 and return gas pipe 292.
[0056] Among them, the anti-condensation pipe 260 can be installed at the opening of the inner liner forming the compartment to prevent condensation from forming due to the temperature difference between the compartment and the opening.
[0057] In this embodiment, the high-temperature, high-pressure superheated refrigerant compressed by the compressor 210 enters the immersion condenser 230 through the precooling pipe 220 for condensation. Then, the high-pressure, low-temperature refrigerant sequentially enters the anti-condensation pipe 260 and the dryer filter 270. Subsequently, the refrigerant enters the capillary tube 291 in the return gas pipe group 292 for throttling, becoming a low-temperature, low-pressure two-phase refrigerant. After entering the evaporator 280 for refrigeration, it becomes a low-pressure, low-temperature gaseous refrigerant, achieving refrigeration. Finally, it enters the compressor 210 through the return gas pipe 292 in the return gas pipe group 292, completing the refrigerant cycle.
[0058] In related technologies, improving the energy efficiency of refrigeration systems mostly involves increasing the size of the condenser and increasing the air volume of the condenser fan to reduce the condensing temperature. However, increasing the size of the condenser is limited by the volume of the refrigeration equipment, and increasing the air volume will increase the operating noise of the equipment.
[0059] In this embodiment, a water collection box 130 is provided in the machine room 120, and a pre-cooling pipe 220 is placed inside the water collection box 130. The water collection box 130 collects defrosting water and other liquids in the machine room 120. The high-temperature superheated refrigerant discharged by the compressor 210 into the pre-cooling pipe 220 exchanges heat with the liquid in the water collection box 130, causing the water temperature in the water collection box 130 to rise and evaporate. The refrigerant then enters the immersion condenser 230 for further condensation. The pre-cooling pipe 220 is used for pre-cooling, which reduces the temperature of the refrigerant entering the immersion condenser 230. This eliminates the need to increase the size of the condenser and does not increase noise, effectively improving the condensation effect during the refrigerant condensation process, lowering the condensation temperature, and improving the cooling efficiency of the equipment.
[0060] Understandably, when the heat exchange capacity of the immersion condenser 230 is large enough, in conjunction with the pre-cooling pipe 220 in the water receiving box 130, the condensing temperature of the refrigeration equipment can be reduced to the ambient temperature.
[0061] In actual operation, the immersion condenser 230 can be connected in parallel with the first control valve 310. The precooling pipe 220 first condenses the refrigerant. When further condensation by the immersion condenser 230 is not required, the first control valve 310 can be opened to bypass the immersion condenser 230.
[0062] According to the refrigeration equipment provided in the embodiments of this application, by setting a pre-cooling pipe 220 placed in the water receiving box 130, the liquid or air in the machine room 120 is used for pre-cooling, and condensation is carried out in conjunction with the immersion condenser 230. The refrigeration efficiency of the equipment can be effectively improved without increasing noise, and the condensation temperature can be reduced to close to the ambient temperature to achieve the purpose of energy saving.
[0063] The water receiving box 130 and the immersion condenser 230 installed in the machine room 120 in this embodiment will be described in detail from two different implementation perspectives.
[0064] 1. An immersion condenser 230 is installed on the top plate of the machine room 120, and a water receiving box 130 is installed on the bottom plate of the machine room 120.
[0065] In some embodiments, the housing 231 of the immersion condenser 230 includes a top and a bottom disposed opposite to each other.
[0066] like Figure 1 As shown, the top of the outer casing 231 is disposed on the top plate of the machine room 120, the bottom surface of the water receiving box 130 is disposed on the bottom plate of the machine room 120, and the bottom of the outer casing 231 is spaced apart from the bottom plate of the machine room 120.
[0067] The immersion condenser 230 can be installed on the top plate of the machine room 120, the water collection box 130 can be installed on the bottom plate of the machine room 120, and the compressor 210 and other components can also be installed on the bottom plate of the machine room 120.
[0068] In this embodiment, the bottom surface of the water receiving box 130 is disposed on the bottom plate of the machine room 120. The water in the water receiving box 130 exchanges heat with the pre-cooling pipe 220. The water in the water receiving box 130 also exchanges heat with the bottom surface and the bottom plate of the machine room 120 to evaporate the liquid in the water receiving box 130.
[0069] In some embodiments, the projection of the water collection box 130 on the base plate at least partially overlaps with the projection of the housing 231 on the base plate, and the opening of the water collection box 130 is used to collect the liquid medium of the immersion condenser 230.
[0070] In this embodiment, the water collection box 130 is located below the immersion condenser 230. When the outer shell 231 of the immersion condenser 230 is damaged, the water collection box 130 can collect the liquid medium leaked from the immersion condenser 230, preventing the leaked liquid from flowing to the bottom plate of the machine room 120 or out of the refrigeration equipment.
[0071] In actual use, when the refrigeration equipment is an air-cooled product, the water collection box 130 can collect defrosting water and liquid media leaked when the outer shell 231 of the immersion condenser 230 is damaged; when the refrigeration equipment is a direct-cooled product, the water collection box 130 can collect liquid media leaked when the outer shell 231 of the immersion condenser 230 is damaged.
[0072] In some embodiments, the projected area of the water receiving box 130 on the base plate is greater than the projected area of the outer casing 231 on the base plate.
[0073] like Figure 2 As shown, the projected area of the water receiving box 130 on the base plate is larger than the projected area of the outer shell 231 of the immersion condenser 230 on the base plate. The increased evaporation area of the water receiving box 130 can effectively improve the evaporation efficiency. The increased volume of the water receiving box 130 can also effectively prevent liquid overflow from the water receiving box 130.
[0074] In this embodiment, the projected area of the water receiving box 130 on the base plate can be equal to the bottom area of the water receiving box 130, and the projected area of the outer shell 231 on the base plate can also be equal to the bottom area of the outer shell 231. For example, the bottom area of the water receiving box 130 is A1, and the bottom area of the outer shell 231 is A2, where A1 is greater than A2.
[0075] In actual implementation, the projection of the water receiving box 130 on the base plate and the projection of the outer shell 231 on the base plate at least partially overlap, and the projection area of the water receiving box 130 on the base plate is larger than the projection area of the outer shell 231 on the base plate. This ensures that the projection of the outer shell 231 on the base plate is completely within the projection of the water receiving box 130 on the base plate, guaranteeing that all liquid leaked from the damaged outer shell 231 of the immersion condenser 230 is collected by the water receiving box 130.
[0076] The following is a specific example.
[0077] like Figure 2 As shown, in the mechanical compartment 120 of the refrigeration equipment, a compressor 210 and an immersion condenser 230 are arranged from left to right. The immersion condenser 230 is arranged on the top plate of the mechanical compartment 120, and a water collection box 130 is arranged on the bottom plate of the mechanical compartment 120. The water collection box 130 can collect defrost water and liquid media leaked from the broken outer shell 231 of the immersion condenser 230.
[0078] A precooling pipe 220 is installed inside the water receiving box 130. The precooling pipe 220 is connected to the outlet of the compressor 210. The high-temperature superheated refrigerant is cooled by the liquid in the water receiving box 130 (when the liquid has completely evaporated, the precooling pipe 220 becomes air natural convection cooling). The immersion condenser 230 is connected to the outlet of the precooling pipe 220. When the heat exchange of the immersion condenser 230 is sufficient, the condenser temperature can be reduced to close to the ambient temperature, which can save about 5% to 10% of energy.
[0079] The projected area of the water collection box 130 on the base plate is larger than the projected area of the outer shell 231 on the base plate. The size of the water collection box 130 is larger than the size of the immersion condenser 230. While increasing the evaporation area and liquid storage capacity of the water collection box 130, it can also ensure that the liquid is collected when the immersion condenser 230 is damaged.
[0080] 2. The immersion condenser 230 is installed on the bottom plate of the machine room 120, and the water receiving box 130 is installed on the top of the immersion condenser 230.
[0081] In some embodiments, the housing 231 includes a top and a bottom disposed opposite to each other, the bottom of the housing 231 being disposed on the bottom plate of the machine room 120, and the bottom surface of the water receiving box 130 being disposed on the top of the housing 231.
[0082] like Figure 3 As shown, the bottom of the outer shell 231 of the immersion condenser 230 is located on the bottom plate of the machine room 120, and the top of the outer shell 231 is provided with a water collection box 130, which can be used to collect defrost water and other liquids.
[0083] In this embodiment, the top of the outer shell 231 of the immersion condenser 230 contacts the water receiving box 130, which can quickly transfer the heat of the liquid medium inside the outer shell 231 to the water receiving box 130 above, effectively increasing the evaporation efficiency of the water receiving box 130. The bottom of the outer shell 231 of the immersion condenser 230 can also contact the bottom plate of the mechanical chamber 120 for heat conduction, allowing the immersion condenser 230 to dissipate heat quickly and effectively ensure the condensation effect of the immersion condenser 230.
[0084] In some embodiments, the projected area of the water receiving box 130 on the base plate is greater than the projected area of the outer casing 231 on the base plate.
[0085] In this embodiment, the projected area of the water receiving box 130 on the base plate is larger than the projected area of the outer shell 231 of the immersion condenser 230 on the base plate. The increased evaporation area of the water receiving box 130 can effectively improve the evaporation efficiency.
[0086] It should be noted that the water receiving box 130 is located on the top of the outer shell 231. The projection of the water receiving box 130 on the bottom plate and the projection of the outer shell 231 on the bottom plate at least partially overlap. The part where the projection of the water receiving box 130 on the bottom plate and the projection of the outer shell 231 on the bottom plate overlap is the part where the top of the water receiving box 130 contacts the top of the outer shell 231. The larger the area of this part, the greater the heat transferred by the liquid medium inside the outer shell 231 to the water receiving box 130 above.
[0087] In actual implementation, the projected area of the water receiving box 130 on the base plate is larger than the projected area of the outer shell 231 on the base plate. The projection of the water receiving box 130 on the base plate may include a first part that overlaps with the projection of the outer shell 231 on the base plate, and a second part that exceeds the projection of the outer shell 231 on the base plate (i.e., does not overlap with the projection of the outer shell 231 on the base plate).
[0088] In some embodiments, such as Figure 4 As shown, the bottom surface of the water receiving box 130 is stepped, and has a first surface 131 and a second surface 132 connected sequentially from the inside to the outside. The second surface 132 is lower than the first surface 131. The first surface 131 is in contact with the top of the outer shell 231, and the second surface 132 is not in contact with the top of the outer shell 231.
[0089] like Figure 5 As shown, the bottom surface of the water receiving box 130 is stepped, the second surface 132 is lower than the first surface 131, and the bottom edge of the water receiving box 130 is recessed, which can increase the capacity of the water receiving box 130 and prevent the risk of liquid overflow.
[0090] In this embodiment, the second surface 132 may be disposed around the edge of the first surface 131.
[0091] For example, the bottom surface of the water receiving box 130 is rectangular, and it has a first surface 131 and a second surface 132 connected sequentially from the inside to the outside. The second surface 132 is provided around the first surface 131. The water receiving box 130 is recessed around the perimeter, which can effectively increase the capacity of the water receiving box 130.
[0092] In actual implementation, the projected area of the water receiving box 130 on the base plate can be larger than the projected area of the outer shell 231 on the base plate. The first surface 131 corresponds to the part where the projected areas of the water receiving box 130 and the outer shell 231 on the base plate overlap, and the second surface 132 corresponds to the part where the projected areas of the water receiving box 130 and the outer shell 231 on the base plate do not overlap.
[0093] In some embodiments, the second surface 132 contacts the base plate.
[0094] In this embodiment, the second surface 132 of the bottom surface of the water receiving box 130 is lowered to the position of the bottom plate of the mechanical chamber 120, and the second surface 132 is in contact with the bottom plate. In addition to exchanging heat with the immersion condenser 230, the water receiving box 130 also exchanges heat with the bottom plate of the mechanical chamber 120, which effectively increases the volume of the water receiving box 130 and improves the evaporation efficiency of the water receiving box 130.
[0095] The following is a specific example.
[0096] like Figure 4 As shown, in the mechanical compartment 120 of the refrigeration equipment, a compressor 210 and an immersion condenser 230 are arranged from left to right. The immersion condenser 230 is arranged on the bottom plate of the mechanical compartment 120, and a water collection box 130 is arranged on top of the immersion condenser 230. The water collection box 130 can collect defrost water.
[0097] A precooling pipe 220 is installed inside the water receiving box 130. The precooling pipe 220 is connected to the outlet of the compressor 210. The high-temperature superheated refrigerant is cooled by the liquid in the water receiving box 130. In order to increase the evaporation area and volume of the water receiving box 130, the bottom surface of the water receiving box 130 is stepped, and has a first surface 131 and a second surface 132 connected from the inside to the outside. The second surface 132 is lower than the first surface 131.
[0098] The bottom of the outer shell 231 of the immersion condenser 230 contacts the bottom plate of the machine room 120 for heat conduction, and the top of the outer shell 231 contacts the water receiving box 130. This allows the heat of the liquid medium inside the outer shell 231 to be quickly transferred to the water receiving box 130 above. The immersion condenser 230 is connected to the outlet of the precooling pipe 220. When the heat exchange of the immersion condenser 230 is sufficient, the condenser temperature can be reduced to close to the ambient temperature, which can save about 5% to 10% of energy.
[0099] In some embodiments, the housing 231 is a plastic housing 110.
[0100] In this embodiment, the outer shell 231 of the immersion condenser 230 is a plastic shell 110, which can quickly transfer the heat of the liquid medium in the immersion condenser 230 to the bottom plate of the machine room 120, the top plate of the machine room 120, or the bottom of the water receiving box 130.
[0101] In some embodiments, the base plate of the machine room 120 is a metal plate.
[0102] In this embodiment, the base plate of the machine room 120 is a metal plate, which can be a sheet metal part. The outer shell 231 of the immersion condenser 230 or the water receiving box 130 contacts the base plate for heat conduction, which effectively improves the evaporation efficiency of the water receiving box 130 and the condensation effect of the immersion condenser 230.
[0103] In this embodiment, the compressor 210 in the machine room 120 is connected to a precooling pipe 220, which is located in the water receiving box 130. The precooling pipe 220 condenses the high-temperature and high-pressure superheated refrigerant output by the compressor 210, and then inputs it into the immersion condenser 230. The refrigeration system of the refrigeration equipment may also include other types of condensers (e.g., bare tube condenser 240, air-cooled condenser, etc.) to be used in conjunction with the immersion condenser 230 to improve the refrigeration efficiency of the equipment.
[0104] Among them, the bare tube condenser 240 is a heat exchange device that achieves condensation through natural air convection.
[0105] like Figure 7 As shown, the refrigeration system of the refrigeration equipment may include components such as compressor 210, precooling pipe 220, immersion condenser 230, bare tube condenser 240, anti-condensation pipe 260, dryer filter 270, capillary tube 291, evaporator 280 and return pipe 292.
[0106] In this embodiment, the high-temperature, high-pressure superheated refrigerant compressed by the compressor 210 enters the immersion condenser 230 and the bare tube condenser 240 through the precooling pipe 220 for condensation. Then, the high-pressure, low-temperature refrigerant sequentially enters the anti-condensation pipe 260 and the dryer filter 270. Subsequently, the refrigerant enters the capillary tube 291 in the return gas pipe group 292 for throttling and becomes a low-temperature, low-pressure two-phase refrigerant. After entering the evaporator 280 for refrigeration, it becomes a low-pressure, low-temperature gaseous refrigerant, thus achieving refrigeration. Finally, it enters the compressor 210 through the return gas pipe 292 in the return gas pipe group 292, completing the refrigerant cycle.
[0107] In actual operation, the immersion condenser 230 can be connected in parallel with the first control valve 310. The precooling pipe 220 first condenses the refrigerant. When further condensation by the immersion condenser 230 is not required, the first control valve 310 can be opened to bypass the immersion condenser 230.
[0108] like Figure 8 As shown, the bare tube condenser 240 can be connected in parallel with the second control valve 320. When the condensation of the precooling tube 220 and the immersion condenser 230 has met the refrigeration requirements, the second control valve 320 can be opened to bypass the bare tube condenser 240.
[0109] It should be noted that the immersion condenser 230 and the bare tube condenser 240 bypass part of the condenser through the control valve, which can prevent the refrigerant from being stored in the condenser and causing liquid shortage under special operating conditions such as low temperature.
[0110] In this embodiment, a water collection box 130 is provided in the machine room 120, and a pre-cooling pipe 220 is placed inside the water collection box 130. The water collection box 130 collects defrosting water and other liquids in the machine room 120. In the refrigerant circuit, the pre-cooling pipe 220 is located before the condensers such as the immersion condenser 230 and the bare tube condenser 240. The high-temperature superheated refrigerant discharged by the compressor 210 into the pre-cooling pipe 220 exchanges heat with the liquid in the water collection box 130, causing the water in the water collection box 130 to evaporate due to increased temperature. The refrigerant then enters the immersion condenser 230 for further condensation. The pre-cooling pipe 220 is used for pre-cooling, which reduces the temperature of the refrigerant entering the immersion condenser 230. There is no need to increase the size of the condenser, and the pre-cooling pipe 220, immersion condenser 230, and bare tube condenser 240 will not increase noise. This effectively improves the condensation effect during the refrigerant condensation process, lowers the condensation temperature, and improves the cooling efficiency of the equipment.
[0111] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0112] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0113] In the description of this application, "first feature" and "second feature" may include one or more of the features.
[0114] In the description of this application, "multiple" means two or more.
[0115] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.
[0116] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.
[0117] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0118] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A refrigeration device, characterized in that, include: The machine room contains a water collection box, a compressor, a precooling pipe, and an immersion condenser, with the refrigerant passages of the compressor, the precooling pipe, and the immersion condenser connected in sequence. The precooling pipe is located inside the water receiving box, which has an opening for collecting liquid from the mechanical chamber. The immersion condenser includes a housing and a condensation assembly. The housing defines a containment space for holding the liquid medium, and the condensation assembly is located within the containment space and submerged in the liquid medium.
2. The refrigeration equipment according to claim 1, characterized in that, The outer casing includes a top and a bottom that are disposed opposite to each other. The bottom of the outer casing is disposed on the bottom plate of the machine room, and the bottom surface of the water receiving box is disposed on the top of the outer casing.
3. The refrigeration equipment according to claim 2, characterized in that, The projected area of the water receiving box on the base plate is larger than the projected area of the outer shell on the base plate.
4. The refrigeration equipment according to claim 2, characterized in that, The bottom surface of the water receiving box is stepped, and has a first surface and a second surface connected sequentially from the inside to the outside. The second surface is lower than the first surface. The first surface is in contact with the top of the outer shell, and the second surface is not in contact with the top of the outer shell.
5. The refrigeration equipment according to claim 4, characterized in that, The second surface is in contact with the base plate.
6. The refrigeration equipment according to claim 1, characterized in that, The outer casing includes a top and a bottom disposed opposite to each other. The top of the outer casing is disposed on the top plate of the machine room, the bottom surface of the water receiving box is disposed on the bottom plate of the machine room, and the bottom of the outer casing is spaced apart from the bottom plate.
7. The refrigeration equipment according to claim 6, characterized in that, The projection of the water receiving box on the base plate at least partially overlaps with the projection of the outer shell on the base plate, and the opening of the water receiving box is used to collect the liquid medium of the immersion condenser.
8. The refrigeration equipment according to claim 7, characterized in that, The projected area of the water receiving box on the base plate is larger than the projected area of the outer shell on the base plate.
9. The refrigeration equipment according to any one of claims 1-8, characterized in that, The outer shell is a plastic shell.
10. The refrigeration equipment according to any one of claims 1-8, characterized in that, The floor of the machine room is made of metal.