Refrigerating unit and refrigerating equipment
By using a dual-compressor parallel design and a compact layout, the refrigeration unit solves the problem of refrigeration equipment downtime caused by single compressor failure or maintenance, achieving continuous operation and high energy efficiency, and reducing production costs and noise.
Patent Information
- Application Number
- CN202423253056.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In traditional refrigeration equipment, the machine needs to be shut down when a single compressor fails or needs maintenance, which affects operation, leads to resource waste and high production costs.
It adopts a dual-compressor design, with the compressors connected in parallel for backup of each other. The condenser, evaporator and compressor are compactly arranged, the frequency converter is independently controlled, and it features a soundproof and heat-insulating structure and a silencer to reduce noise.
It enables continuous operation during compressor failure or maintenance, reduces energy consumption, improves reliability and equipment utilization, reduces noise and vibration, and lowers production costs.
Smart Images
Figure CN223564485U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to refrigeration related technical field especially, a kind of refrigeration unit and refrigeration equipment. BACKGROUND
[0002] Traditional factory uses refrigeration equipment usually for single head compressor, when the problem of compressor failure or needs to overhaul, refrigeration equipment cannot be used, and refrigeration equipment must be stopped, cannot normally operate, to affect refrigeration effect, cause waste of resources. INVENTION CONTENTS
[0003] The utility model provides a kind of refrigeration unit for solving the problem of single compressor of relevant technical refrigeration equipment failure or needs to overhaul when affecting equipment operation.
[0004] The utility model provides a kind of refrigeration unit, comprising:
[0005] Condenser;
[0006] Evaporator, the refrigerant input end of the evaporator is communicated with the refrigerant output end of the condenser;
[0007] At least two compressors, at least two the compressor is connected in parallel, and the refrigerant input end of each compressor is communicated with the refrigerant output end of the evaporator, and the output end of the compressor is communicated with the refrigerant input end of the condenser;
[0008] Among them, the condenser, the evaporator and at least two the compressor are adjacently arranged.
[0009] According to the refrigeration unit provided by the utility model, the condenser and the evaporator are arranged side by side.
[0010] According to the refrigeration unit provided by the utility model, at least two the compressor is arranged above the evaporator.
[0011] According to the refrigeration unit provided by the utility model, the evaporator is provided with mounting seat at each compressor, and the compressor is located above the mounting seat and is connected with the mounting seat, so that the compressor and the evaporator have spacing.
[0012] According to the refrigeration unit provided by the utility model, the refrigeration unit further comprises at least two frequency conversion cabinets, and at least two the frequency conversion cabinet and at least two the compressor are electrically connected one by one to control the operating speed of the corresponding compressor.
[0013] Among them, the frequency conversion cabinet and the compressor are arranged side by side.
[0014] The utility model provides a refrigerating unit, at least two frequency conversion cabinet is located above the condenser.
[0015] According to the utility model provides a refrigerating unit, at least one outer wall among the condenser, the evaporator and the compressor is equipped with sound insulation heat preservation structure;
[0016] And / or, the outer wall of the connecting pipeline between any two among the condenser, the evaporator and the compressor is equipped with sound insulation heat preservation structure.
[0017] According to the utility model provides a refrigerating unit, the sound insulation heat preservation structure is rubber plastic sponge heat preservation layer.
[0018] According to the utility model provides a refrigerating unit, the communication path of refrigerant output end of the compressor and refrigerant input end of the condenser is equipped with sound reduction structure.
[0019] The utility model also provides a refrigeration equipment, including above-mentioned refrigerating unit.
[0020] The refrigerating unit of the utility model compares single compressor in relevant technical field, the utility model is equipped with at least two compressors, can only start one compressor to work under small load working condition, when one compressor can not satisfy the load of rising, the second compressor is automatically put into operation, cooperates the first compressor to realize the refrigerating capacity under different load working condition, reaches the purpose of reducing energy consumption.
[0021] Adopt double compressor design can make the failure rate to be lowest, improve refrigerating unit reliability, double compressor design, when one compressor needs to be repaired, still can normally operate, realizes mutual backup function, is independent to each other, is not influenced respectively.
[0022] In addition, through the adjacent arrangement of condenser, evaporator and at least two compressors, compact layout is favorable for shortening the connecting pipeline between compressor, condenser and evaporator, and the production cost is lower. ACCURACY
[0023] In order to more clearly illustrate the technical scheme in the utility model or prior art, the following will be to the embodiment or prior art description needed to use the drawing a simple introduction, obviously, the following description in the drawing is some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.
[0024] Figure 1 It is the first visual angle structure schematic diagram of the refrigerating unit provided by the utility model.
[0025] Figure 2It is the second perspective structure schematic view of the refrigerating unit provided by the utility model.
[0026] Figure 3 It is the third perspective structure schematic view of the refrigerating unit provided by the utility model.
[0027] Figure 4 It is the fourth perspective structure schematic view of the refrigerating unit provided by the utility model.
[0028] Figure 5 It is the fifth perspective structure schematic view of the refrigerating unit provided by the utility model.
[0029] Reference signs:
[0030] 100, condenser; 110, cooling water inlet; 120, cooling water outlet; 200, evaporator; 210, chilled water inlet; 220, chilled water outlet; 300, compressor; 400, mounting seat; 500, frequency conversion cabinet; 600, sound attenuation structure; 700, suction pipeline; 800, exhaust pipeline; 900, oil separator; A, rack. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0032] At present, the traditional factory uses the single-head compressor in the refrigeration equipment, when the compressor 300 fails or needs to be repaired, the refrigeration equipment cannot be used, and the refrigeration equipment must be stopped, which cannot normally run, thereby affecting the refrigeration effect and causing the waste of resources.
[0033] In addition, the compressor 300, the condenser 100 and the evaporator 200 in the related art are relatively dispersed, the pipeline is long, and the production cost is high.
[0034] The refrigerating unit and the refrigeration equipment of the utility model will be described below in combination with Figures 1-5 The above ice-making unit relates to the structure parts of refrigeration, and the refrigeration equipment includes the above ice-making unit and other structure parts, for example, the pipeline and the like.
[0035] It can be understood that, referring to Figures 1 to 3The utility model provides a refrigerating unit, including condenser 100, evaporimeter 200 and at least two compressor 300, evaporimeter 200's refrigerant input end is linked with condenser 100's refrigerant output end, at least two compressor 300 are in parallel arrangement, and the refrigerant input end of each compressor 300 is linked with the refrigerant output end of evaporimeter 200, and the output end of compressor 300 is linked with the refrigerant input end of condenser 100, wherein, condenser 100, evaporimeter 200 and at least two compressor 300 are adjacent arrangement.
[0036] The refrigerating unit provided by the utility model, compared with single compressor 300 in the related art, at least two compressors 300 are arranged, one compressor 300 can be started to work under small load working condition, when one compressor 300 cannot satisfy the rising load, the second compressor 300 is automatically put into operation to realize the refrigerating capacity under different load working conditions with the first compressor 300, and the purpose of reducing energy consumption is achieved.
[0037] The double compressor 300 design can minimize the failure rate, improve the reliability of the refrigerating unit, the double compressor 300 design enables the unit to operate normally when one compressor 300 needs to be repaired, realizes the mutual backup function, and is independent of each other.
[0038] In addition, the condenser 100, the evaporimeter 200 and the at least two compressors 300 are arranged adjacent to each other, compact layout, which is beneficial to shorten the communication pipeline between the compressor 300, the condenser 100 and the evaporimeter 200, and the production cost is lower.
[0039] Specifically, it can be understood that the above refrigerating unit can select to start only one compressor 300 or start two compressors 300 simultaneously according to the actual refrigeration load change, realize the step adjustment of refrigerating capacity, avoid the phenomenon of big horse pulling small cart under low load working condition, effectively reduce the energy consumption, compared with the refrigerating unit of single compressor 300, has better energy saving performance when operating under partial load, and is especially suitable for application scenarios with large load change, such as central air conditioning system of commercial building.
[0040] When starting, the two compressors 300 of the double compressor 300 refrigerating unit can be started in turn, compared with the single compressor 300 unit, the starting current is smaller, the impact on the power grid is also smaller, the electrical equipment failure caused by the too large starting current is reduced, and the requirement of the power grid capacity is also reduced, which has better adaptability in some places with limited power grid capacity.
[0041] The two refrigeration systems of the double-compressor refrigeration unit are independent of each other, which enables each compressor 300 to be repaired without stopping the entire unit, greatly shortening the maintenance time, improving the utilization rate of the equipment, and reducing the losses caused by production stagnation or refrigeration interruption due to maintenance.
[0042] The main components such as the compressor 300, the evaporator 200, and the condenser 100 have high universality, which not only facilitates daily maintenance and reduces maintenance difficulty, but also makes it easier to find suitable replacements when components need to be replaced, reducing repair costs and time.
[0043] By adjusting the operating state of the two compressors 300, the double-compressor refrigeration unit can achieve a wide range of refrigeration output, meeting the needs of different scales and different refrigeration, and being applicable to various application scenarios from small commercial buildings to large industrial plants, improving the universality and adaptability of the unit.
[0044] The double-compressor refrigeration unit can maintain good operating performance under different environmental temperatures, humidity, and load conditions, and its adjustable refrigeration capacity and flexible operating mode enable it to better cope with complex and variable working conditions, providing stable and reliable refrigeration services to users in both high-temperature and high-humidity summer and low-temperature and low-humidity winter.
[0045] During operation, the two compressors 300 can work alternately, making the operating load of the unit more balanced, reducing vibration and noise caused by uneven load, and also reducing noise problems caused by frequent start-stop of the compressor 300, providing a quieter use environment for users.
[0046] It should be noted that in some embodiments of the present application, the number of compressors 300 is two, of course, in some embodiments, the number of compressors 300 can also be three, etc., which is not limited here; in some embodiments of the present application, the compressor 300 is a screw compressor 300, in some embodiments, it can also be a piston compressor 300, etc., which is not limited here.
[0047] It should also be noted that in some embodiments of the present application, the refrigeration unit further comprises a rack A, and the rack A is provided with a first installation channel and a second installation channel, which can be understood as the end of the condenser 100 being installed in the first installation channel, and the evaporator 200 being installed in the second installation channel to achieve installation and fixation. Specifically, in some embodiments of the present application, the rack A can be assembled by multiple splicing brackets connected by bolts, welded, etc.; the rack A can also be formed by a single frame, which is not limited here.
[0048] It can be understood that, with reference to Figure 1 In some embodiments of the present application, the condenser 100 is provided with a cooling water inlet 110 and a cooling water outlet 120, and the evaporator 200 is provided with a chilled water inlet 210 and a chilled water outlet 220, wherein the cooling water inlet 110, the cooling water outlet 120, the chilled water inlet 210 and the chilled water outlet 220 are located on the same side. It can be understood that, because all the interfaces are concentrated on one side, the difficulty and length of pipeline arrangement can be reduced, installation and maintenance are facilitated, space is effectively utilized, and the monitoring and control of temperature, flow and pressure are more convenient due to the layout on one side.
[0049] Specifically, with reference to Figure 1 and Figure 2 In some embodiments of the present application, the condenser 100 and the evaporator 200 are arranged side by side.
[0050] With the above structure, the condenser 100 and the evaporator 200 arranged side by side can more effectively utilize space, facilitate installation and maintenance, can reduce the length and complexity of the pipeline, and also make the control system design more concentrated, facilitating monitoring and management.
[0051] In some embodiments of the present application, at least two compressors 300 are arranged above the evaporator 200.
[0052] It can be understood that, because the refrigerant becomes gaseous after absorbing heat in the evaporator 200, the density of the gaseous refrigerant is less than that of the liquid. Placing the compressor 300 above the evaporator 200 can utilize gravity assistance to make the gaseous refrigerant flow naturally to the compressor 300, reducing pumping energy consumption. In a limited space, placing the compressor 300 above the evaporator 200 can better utilize the vertical space and save floor area.
[0053] In addition, placing the compressor 300 above the evaporator 200 can shorten the length of the pipeline between them, reduce pipeline friction loss and refrigerant pressure drop, short-distance pipeline can reduce the phenomenon of supercooling or superheating of refrigerant, improve the overall efficiency of the system; and it is easier to maintain and overhaul because they are easier to access and may not need to crawl or enter narrow spaces. In addition, placing the compressor 300 above the evaporator 200 can reduce the impact on the surrounding environment when the compressor 300 is running, because the noise source is farther from the ground and the operating personnel.
[0054] Since the liquid refrigerant is heavier than the gaseous refrigerant, placing the compressor 300 above the evaporator 200 helps prevent the liquid refrigerant from flowing into the compressor 300 due to gravity, causing liquid damage. At the same time, the heat generated by the compressor 300 can be transferred from the compressor 300 to the evaporator 200 by natural convection, which helps to preheat the refrigerant entering the evaporator 200 and reduces the load of the evaporator 200.
[0055] It can be understood that, with reference to Figure 1 and Figure 3 In some embodiments of the present application, the evaporator 200 is provided with a mounting seat 400 corresponding to each compressor 300, and the compressor 300 is located above the mounting seat 400 and connected with the mounting seat 400, so that the compressor 300 and the evaporator 200 have a spacing.
[0056] With the above structure and the above spacing, the air circulation between the evaporator 200 and the compressor 300 can be increased, which helps to dissipate heat. A large amount of heat will be generated when the compressor 300 is running. If the distance between the compressor 300 and the evaporator 200 is appropriate, the heat transfer from the compressor 300 to the evaporator 200 can be reduced, avoiding affecting the refrigeration effect of the evaporator 200. In addition, the spacing can also play a certain sound insulation and vibration reduction effect, reducing the noise and vibration generated by the compressor 300 when running, and affecting the evaporator 200. Maintenance and repair personnel provide enough space for the inspection, cleaning and replacement of parts of the compressor 300.
[0057] Specifically, in some embodiments of the present application, the bottom of the compressor 300 and the mounting seat 400 can be fixedly connected by bolt and nut cooperation or welding, which is not limited here.
[0058] Specifically, in some embodiments of the present application, the upper side outer wall of the evaporator is provided with two mounting seats 400 corresponding to each compressor 300, and the two mounting seats 400 are spaced apart and fixedly connected with the corresponding compressor 300, further improving the air circulation and helping to dissipate heat.
[0059] It can be understood that, with reference to Figures 1 to 3 In some embodiments of the present application, the refrigeration unit further comprises at least two frequency conversion cabinets 500, and the at least two frequency conversion cabinets 500 are electrically connected one by one with the at least two compressors 300 to control the running speed of the corresponding compressor 300; wherein the frequency conversion cabinet 500 and the compressor 300 are arranged side by side.
[0060] With the above structure, the frequency conversion cabinet 500 is electrically connected with the compressor 300 one by one, so as to realize independent control of the rotating speed of the compressor 300. The frequency conversion cabinet 500 and the compressor 300 are arranged side by side, so that the limited space can be more effectively utilized, especially in the case that the space of the equipment room or the machine room is limited; the layout of the pipeline and the cable is facilitated, unnecessary bending and extension are reduced, the complexity of the system is reduced, the installation work is more intuitive and convenient, the installation time and cost are reduced, and the maintenance, replacement of parts or routine inspection is facilitated.
[0061] Specifically, referring to Figure 1 and Figure 4 In some embodiments of the present application, at least two frequency conversion cabinets 500 are arranged above the condenser 100.
[0062] Through the above arrangement, the frequency conversion cabinet 500 is arranged above the condenser 100, and is arranged in a vertical space, so that the space of the machine room or the equipment room can be more effectively utilized, especially in the case that the ground space is limited.
[0063] It can be understood that, in some embodiments of the present application, at least one outer wall of the condenser 100, the evaporator 200 and the compressor 300 is provided with a sound insulation and heat preservation structure (not shown in the figure);
[0064] And / or, the outer wall of the connecting pipeline between any two of the condenser 100, the evaporator 200 and the compressor 300 is provided with a sound insulation and heat preservation structure.
[0065] Specifically, in some embodiments of the present application, it can be understood that the outer walls of the condenser 100, the evaporator 200, the compressor 300 and the connecting pipeline are all covered with a sound insulation and heat preservation structure, so as to reduce the loss of cold energy and effectively reduce the noise of the unit, so that it can better adapt to places with high noise requirements.
[0066] Similarly, in some embodiments of the present application, the rack A is covered with a sound insulation and heat preservation structure, and it can be understood that the double-compressor refrigeration unit is covered with a sound insulation and heat preservation structure except for necessary components.
[0067] Of course, in some embodiments, one or two of the condenser 100, the evaporator 200 and the compressor 300 are covered with a heat preservation structure, or, in other embodiments, the outer wall of the connecting pipeline between any two of the condenser 100, the evaporator 200 and the compressor 300 is provided with a sound insulation and heat preservation structure, which is not limited herein.
[0068] Specifically, in some embodiments of the present application, the sound insulation and heat preservation structure is an rubber-plastic sponge heat preservation layer. The rubber-plastic sponge material has a low thermal conductivity, can effectively block heat transfer, play a heat preservation role, reduce energy loss, has a certain sound absorption effect, can reduce the noise of the pipeline and equipment during operation, improve the indoor environment, has good water vapor permeation resistance, will not reduce the heat preservation effect due to water absorption, and will not affect the structural strength of the heat preservation layer due to water vapor permeation, is soft in texture, easy to cut and install, suitable for heat preservation of pipelines and equipment of various shapes, has good chemical stability and is not easy to age, has a long service life under normal use and maintenance conditions.
[0069] Of course, in some embodiments, the sound insulation and heat preservation structure described above can also be polyurethane foam, sound-absorbing foam, etc.
[0070] It should be noted that, in some embodiments of the present application, the rubber-plastic sponge heat preservation layer is fixedly connected to the condenser 100, the evaporator 200, the compressor 300 and the communication pipeline through an adhesive; of course, the rubber-plastic sponge heat preservation layer can also be fixed to the outer wall of the corresponding component by heat preservation nails, clamps, supports, brackets, etc.
[0071] It can be understood that, with reference to Figure 2 In some embodiments of the present application, the communication path between the refrigerant output end of the compressor 300 and the refrigerant input end of the condenser 100 is provided with a sound insulation structure 600, which is beneficial to reduce the noise when the gas flows, makes the operation of the entire refrigeration unit more quiet, and improves the working environment and living environment.
[0072] Specifically, with reference to Figure 2 In some embodiments of the present application, the refrigerant output end of the compressor 300 and the refrigerant input end of the condenser 100 are communicated through a suction pipeline 700, and the sound insulation structure 600 is a silencer sleeved on the outer wall of the suction pipeline 700, which can be selected as an expansion type silencer or an impedance composite type silencer, etc., which is not limited here.
[0073] With reference to Figure 2 In some embodiments of the present application, the refrigerant input end of the condensing compressor 300 and the refrigerant output end of the evaporator 200 are communicated through an exhaust pipeline 800.
[0074] It can be understood that, with reference to Figure 4 and Figure 5In some embodiments of the present application, the refrigeration unit further comprises at least two oil separators 900, and the at least two oil separators 900 are matched with the at least two compressors 300 one by one. The inlet of each oil separator 900 is communicated with the exhaust pipeline 800, and the oil return port of each oil separator 900 is communicated with the suction pipeline 700 and returns to the compressor 300. The oil separator 900 can effectively separate the lubricating oil from the refrigerant and return the oil to the compressor 300 through the oil return port, thereby ensuring the normal lubrication of the compressor 300 and the stable operation of the system.
[0075] Specifically, in some embodiments of the present application, the at least two oil separators 900 are arranged below the condenser 100. Placing the oil separator 900 below the condenser 100 can optimize the layout of the refrigeration unit, save installation space, and especially in space-limited occasions.
[0076] Specifically, in the embodiments of the present application, the working process of the refrigeration unit is generally as follows:
[0077] Step one: start-up stage: according to the set temperature and the actual temperature of the refrigeration system, it is determined whether the dual compressors 300 need to be started. If the dual compressors 300 need to be started, one compressor 300 is started first, and after it is stably running, the other compressor 300 is started.
[0078] Step two: running stage: during the running process of the dual compressors 300, the control system monitors the running state and parameters of the refrigeration system in real time, such as temperature, pressure, current, etc. When an abnormal situation occurs or maintenance is needed for a certain compressor 300, the control system can automatically switch to the other compressor 300 to continue working, thereby ensuring the continuity and stability of the refrigeration system.
[0079] Step three: stop stage: when the refrigeration system reaches the set temperature or needs to be stopped, the control system stops one compressor 300 first, and then stops the other compressor 300 after it is completely stopped.
[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A refrigeration unit, characterized in that, include: Condenser (100); Evaporator (200), wherein the refrigerant inlet of the evaporator (200) is connected to the refrigerant outlet of the condenser (100); At least two compressors (300) are connected in parallel, and the refrigerant input terminal of each compressor (300) is connected to the refrigerant output terminal of the evaporator (200), and the output terminal of the compressor (300) is connected to the refrigerant input terminal of the condenser (100). The condenser (100), the evaporator (200), and at least two compressors (300) are arranged adjacent to each other.
2. The refrigeration unit according to claim 1, characterized in that, The condenser (100) and the evaporator (200) are arranged side by side.
3. The refrigeration unit according to claim 1, characterized in that, At least two of the compressors (300) are located above the evaporator (200).
4. The refrigeration unit according to claim 3, characterized in that, The evaporator (200) is provided with a mounting base (400) corresponding to each of the compressors (300). The compressor (300) is located above the mounting base (400) and connected to the mounting base (400) so that there is a gap between the compressor (300) and the evaporator (200).
5. The refrigeration unit according to any one of claims 1 to 4, characterized in that, The refrigeration unit also includes at least two frequency converter cabinets (500), and the at least two frequency converter cabinets (500) are electrically connected to at least two compressors (300) in a one-to-one correspondence to control the operating speed of the corresponding compressors (300); The frequency converter cabinet (500) and the compressor (300) are arranged side by side.
6. The refrigeration unit according to claim 5, characterized in that, At least two of the frequency converter cabinets (500) are located above the condenser (100).
7. The refrigeration unit according to claim 1, characterized in that, At least one of the condenser (100), the evaporator (200) and the compressor (300) has a sound insulation and heat preservation structure on its outer wall; And / or, the outer wall of the connecting pipe between any two of the condenser (100), the evaporator (200) and the compressor (300) is provided with a sound insulation and heat preservation structure.
8. The refrigeration unit according to claim 7, characterized in that, The sound insulation and heat preservation structure is a rubber and plastic sponge insulation layer.
9. The refrigeration unit according to claim 1, characterized in that, A noise reduction structure (600) is provided on the communication path between the refrigerant output end of the compressor (300) and the refrigerant input end of the condenser (100).
10. A refrigeration device, characterized in that, Includes the refrigeration unit as described in any one of claims 1 to 9.