CN217619442U - Cooling system, cooling machine, and machine tool - Google Patents
Cooling system, cooling machine, and machine tool Download PDFInfo
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- CN217619442U CN217619442U CN202221901018.5U CN202221901018U CN217619442U CN 217619442 U CN217619442 U CN 217619442U CN 202221901018 U CN202221901018 U CN 202221901018U CN 217619442 U CN217619442 U CN 217619442U
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Abstract
The utility model discloses a cooling system, cooler and lathe, cooling system includes: the cooling system comprises a refrigeration circulation loop and a cooling circulation loop used for cooling the processing equipment, wherein an evaporator in the refrigeration circulation loop is a cooling evaporator, and the cooling evaporator is provided with a first heat exchange pipeline connected in the refrigeration circulation loop and a second heat exchange pipeline connected in the cooling circulation loop; the cooling circulation loop is provided with a liquid pump and a cold storage box for storing a cold storage medium, the liquid pump, the cold storage box and the second heat exchange pipeline are connected in series, and a cold storage evaporator for providing cold energy is arranged in the cold storage box. The utility model discloses a cooling circulation circuit design has the cold-storage case, through the inside cold-storage evaporimeter cooling cold-storage medium of cold-storage case, will unnecessary cold volume storage, and cooling circulation circuit after the cold-storage can independently cool down to this effect that reaches the energy saving.
Description
Technical Field
The utility model relates to a cooler technical field especially relates to cooling system, cooler and lathe of cold-storage energy storage.
Background
Common processing equipment such as a machine tool and the like can generate a large amount of heat during processing and needs to be cooled through a cooling machine, the cooling machine of the common machine tool is provided with a refrigeration cycle loop which is mainly formed by connecting a compressor, a condenser, a filter, a throttling device and an evaporator, and the evaporator provides cold energy for cooling the processing equipment when the compressor works. The cooler that appears among the prior art only has single refrigeration function, and the cooling machine can last refrigeration cycle during the start-up, and under the condition that the lathe standby state or cooling temperature reached, the unnecessary cold volume that refrigerating unit produced can be wasted, leads to the processing equipment energy consumption too high.
Therefore, how to design a cooling system, a cooling machine and a machine tool capable of effectively reducing energy consumption is an urgent technical problem to be solved in the industry.
SUMMERY OF THE UTILITY MODEL
In order to solve the defect that there is cold volume waste in prior art, the utility model provides a cooling system, cooler and lathe, this cooling system's cooling cycle loop design has the cold storage case, through the inside cold-storage evaporimeter cooling cold-storage medium of cold storage case, will unnecessary cold volume storage, and the cooling cycle loop after the cold storage can independently supply cold to this effect that reaches the energy saving.
The utility model discloses a technical scheme be, design cooling system, include: the cooling system comprises a refrigeration circulation loop and a cooling circulation loop used for cooling the processing equipment, wherein an evaporator in the refrigeration circulation loop is a cooling evaporator, and the cooling evaporator is provided with a first heat exchange pipeline connected in the refrigeration circulation loop and a second heat exchange pipeline connected in the cooling circulation loop; the cooling circulation loop is provided with a liquid pump and a cold storage box for storing a cold storage medium, the liquid pump, the cold storage box and the second heat exchange pipeline are connected in series, and a cold storage evaporator for providing cold is arranged in the cold storage box.
In some embodiments, the cold storage evaporator and the cold supply evaporator are connected in parallel in the same refrigeration cycle circuit. The cold accumulation evaporator is connected in series with a cold accumulation switch valve; when the cold accumulation switch valve is opened, the cold accumulation evaporator is connected with the refrigeration cycle loop, and when the cold accumulation switch valve is closed, the cold accumulation evaporator is disconnected with the refrigeration cycle loop.
In some embodiments, the cold storage evaporator and the cold supply evaporator can also be connected in different refrigeration cycle circuits.
Preferably, the cooling evaporator is connected with a cooling switch valve in series; when the cooling switch valve is opened, the cooling evaporator is connected with the refrigeration circulation loop, and when the cooling switch valve is closed, the cooling evaporator is disconnected with the refrigeration circulation loop.
Preferably, a liquid level detection device for detecting the liquid level of the cold accumulation medium and/or a temperature detection device for detecting the temperature of the cold accumulation medium are/is further arranged in the cold accumulation box.
In some embodiments, the liquid level detection device inside the cold storage box adopts a liquid level switch, and the height of the liquid level switch is higher than the lowest point of the cold storage evaporator.
Preferably, an inlet of the cooling evaporator is provided with an evaporation temperature bulb, and a compressor of the refrigeration cycle loop controls the refrigerant to enter fluorine-deficient protection according to the detection temperature of the evaporation temperature bulb.
Preferably, an inlet and an outlet of the cooling circulation loop are respectively provided with an inlet temperature sensing bulb and an outlet temperature sensing bulb, and a compressor of the refrigeration circulation loop is controlled to enter anti-freezing protection according to the temperature difference between the inlet temperature sensing bulb and the outlet temperature sensing bulb.
In some embodiments, the cold storage medium is water.
The utility model discloses still provide the cooler, this cooler adopts foretell cooling system.
The utility model discloses the lathe that has above-mentioned cooler has still been proposed.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the cold accumulation evaporator for providing cold energy is designed in the cold accumulation box, so that the cold accumulation box can accumulate cold in the electricity utilization low peak period and utilize the cold accumulation box to discharge cold in the electricity utilization high peak period;
2. the cold accumulation evaporator in the cold accumulation box is connected with the cold supply evaporator of the refrigeration cycle loop in parallel, and the refrigerant of the refrigeration cycle loop can flow into the cold accumulation evaporator to cool the cold accumulation medium, so that cold accumulation and energy conservation are realized;
3. the cold accumulation evaporator is connected in series with a cold accumulation switch valve, when the cold accumulation switch valve is opened, the cold accumulation medium in the cold accumulation box starts to accumulate cold, when the cold accumulation switch valve is closed, the cold accumulation medium in the cold accumulation box stops accumulating cold, and whether the cold accumulation function is opened or not is controlled by the cold accumulation switch valve;
4. an evaporation temperature bulb, an inlet temperature bulb, an outlet temperature bulb and the like are designed, so that fluorine deficiency protection and anti-freezing protection are realized, and the safety and the reliability of a cooling system are ensured.
Drawings
The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings, in which:
fig. 1 is a schematic connection diagram of the cooling system of the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the present patent and are not limiting upon the present patent.
As shown in fig. 1, the present invention provides a cooling system suitable for machining equipment, such as machine tools. The whole cooling system is composed of a refrigeration cycle loop and a cooling cycle loop, the refrigeration cycle loop comprises a compressor 1, a condenser 2, a throttling device 3 and a cooling evaporator 4, the compressor 1 provides circulating power of a refrigerant in the refrigeration cycle loop, an air suction port of the compressor 1 is generally connected with a gas-liquid separator 5, the condenser 2 can adopt an air-cooled condenser, the refrigerant is cooled through heat dissipation of a condensing fan, the throttling device 3 can adopt an electronic expansion valve, and the cooling evaporator 4 can adopt a shell and tube heat exchanger. The cooling circulation circuit comprises a liquid pump 6 and a cold storage tank 7, and the liquid pump 6 provides circulating power of a cold storage medium in the cooling circulation circuit.
The cold supply evaporator 4 is provided with a first heat exchange pipeline and a second heat exchange pipeline which exchange heat with each other, the first heat exchange pipeline is connected in the refrigeration cycle loop, the first heat exchange pipeline is connected between the throttling device 3 and the compressor 1, the second heat exchange pipeline is connected in the cooling cycle loop, the cooling cycle loop is provided with a liquid pump 6 and a cold storage box 7 used for storing a cold storage medium, and the cold storage box 7, the second heat exchange pipeline and the liquid pump 6 are sequentially connected in series.
The circulation process of the refrigeration cycle loop is as follows, the compressor 1 sucks the low-temperature low-pressure refrigerant steam sent out by the first heat exchange pipeline, the low-temperature low-pressure refrigerant steam is compressed into high-temperature high-pressure superheated steam through the compressor 1, the superheated steam is radiated to the environment in the condenser 2, and then is condensed into saturated or supercooled refrigerant liquid, the saturated or supercooled refrigerant liquid flows into the first heat exchange pipeline after being throttled and depressurized through the throttling device 3, the refrigerant is sucked by the compressor 1 after absorbing heat of the cold storage medium flowing through the second heat exchange pipeline for vaporization, and a new cycle is started.
The circulation process of the cooling circulation loop is as follows, the high-temperature cold accumulation medium flowing out of the processing equipment flows to the cold accumulation box 7 from the inlet of the cooling circulation loop, the high-temperature cold accumulation medium enters the cold accumulation box 7 and is mixed with the cold accumulation medium therein, a part of the cold accumulation medium in the cold accumulation box 7 flows out and passes through the second heat exchange pipeline, the heat of the cold accumulation medium is absorbed by the refrigerant in the first heat exchange pipeline to be cooled into the low-temperature cold accumulation medium, and the low-temperature cold accumulation medium is sent to the outlet of the cooling circulation loop by the liquid pump 6 to enter the processing equipment again to start new circulation.
The cold accumulation evaporator 8 is arranged in the cold accumulation box 7, the cold accumulation evaporator 8 is immersed in the cold accumulation medium, the cold accumulation evaporator 8 is used for providing cold energy, the preferred mode is that the cold accumulation evaporator and the cold supply evaporator are connected in parallel in the same refrigeration cycle loop, a refrigerant of the refrigeration cycle loop can flow into the cold accumulation evaporator 8 to cool the cold accumulation medium, redundant cold energy is stored, and the cooling cycle loop after cold accumulation can independently supply cold, so that the effect of saving energy is achieved. In practice, the cold storage evaporator and the cold supply evaporator may be connected to different refrigeration cycle circuits.
The utility model discloses an in some embodiments, cold-storage evaporimeter 8 is established ties there is cold-storage ooff valve 9, and when cold-storage ooff valve 9 was opened, cold-storage evaporimeter 8 and refrigeration cycle return circuit switch-on, the cooling medium flowed in cold-storage evaporimeter 8 and is cooled down for cold-storage tank 7 under the refrigeration cycle return circuit operating condition, and when cold-storage ooff valve 9 was closed, cold-storage evaporimeter 8 and refrigeration cycle return circuit disconnection, the refrigerant only can flow in under the refrigeration cycle return circuit operating condition and supplies cold evaporimeter 4.
In still other embodiments of the present invention, the cold-storage evaporator 8 is connected in series with the cold-storage switching valve 9, the cold-supply evaporator 4 is connected in series with the cold-supply switching valve 10, and at least one of the two switching valves, i.e., the cold-storage switching valve 9 and the cold-supply switching valve 10, must be opened in the working state of the refrigeration cycle. When the cold supply switch valve 10 is opened, the cold supply evaporator 4 is connected with the refrigeration cycle circuit, under the working state of the refrigeration cycle circuit, the refrigerant flows into the cold supply evaporator 4 to cool the cold storage medium flowing through the second heat exchange pipeline, when the cold supply switch valve 10 is closed, the cold supply evaporator 4 is disconnected with the refrigeration cycle circuit, and under the working state of the refrigeration cycle circuit, the refrigerant only can flow into the cold storage evaporator 8.
The cooling system has the following four modes of operation.
In the cold accumulation mode, the cold supply switch valve 10 is closed, the cold accumulation switch valve 9 is opened, the compressor 1 works, the liquid pump 6 stops working, and the refrigerant enters the cold accumulation evaporator 8 to cool the cold accumulation medium in the cold accumulation box;
in the direct cold supply mode, the cold supply switch valve 10 is opened, the cold accumulation switch valve 9 is closed, the compressor 1 works, the liquid pump 6 works, and the refrigerant enters the cold supply evaporator 4 to cool the cold accumulation medium flowing through the second heat exchange pipeline;
in the cold supply mode of the cold storage box, the cold supply switch valve 10 is closed, the cold storage switch valve 9 is closed, the compressor 1 stops working, the liquid pump 6 works, and the cold storage medium in the cold storage box 7 is output;
in the combined cooling mode, the cooling switch valve 10 is opened, the cold accumulation switch valve 9 is opened, the compressor 1 works, the liquid pump 6 works, one part of refrigerant enters the cold accumulation evaporator 8 to cool the cold accumulation medium of the cold accumulation box 7, and the other part of refrigerant enters the cooling evaporator 4 to cool the cold accumulation medium flowing through the second heat exchange pipeline.
The utility model discloses a cold-storage medium carries out the phase transition cold-storage under the cold-storage mode, can store this partial cold volume, can carry out the cold-storage during practical application in the power consumption valley period, uses cold-storage case 7 coolings in the power consumption peak period to this reaches the energy saving, makes processing equipment keep low temperature.
In some embodiments of the present invention, at least one of the liquid level detection device 11 and the temperature detection device 12 is further disposed inside the cold storage box 7, the liquid level detection device 11 is used for detecting the liquid level of the cold storage medium, and the temperature detection device 12 is used for detecting the temperature of the cold storage medium. The liquid level detection device 11 can adopt a liquid level switch, the liquid level switch is arranged at the upper side position inside the cold storage tank 7, the liquid level switch is not lower than the lowest point of the cold storage evaporator 8, preferably, the liquid level switch is kept flush with the top of the cold storage evaporator 8 to ensure that the capacity of the cold storage medium in the cold storage tank 7 is proper, and the cold storage evaporator 8 is immersed in the cold storage medium.
In some embodiments of the utility model, the import of cooling evaporimeter 4 is equipped with evaporating temperature bulb 13, and compressor 1 gets into and lacks fluorine protection according to evaporating temperature bulb 13's detection temperature control, and when evaporating temperature bulb 13's detection temperature was less than the default and lacks fluorine temperature promptly, compressor 1 got into and lacks fluorine protection, refrigeration cycle return circuit shutdown.
In still other embodiments of the present invention, the inlet of the cooling circulation loop is provided with the inlet temperature bulb 14, the outlet is provided with the outlet temperature bulb 15, and the compressor 1 enters the anti-freezing protection according to the temperature difference control of the inlet temperature bulb 14 and the outlet temperature bulb 15, that is, when the temperature difference between the inlet temperature bulb 14 and the outlet temperature bulb 15 exceeds the set freezing temperature difference, the compressor 1 enters the anti-freezing protection, and the refrigeration circulation loop stops operating.
It should be noted that the refrigeration cycle circuit may further be designed with functions of high pressure protection, low pressure protection, high temperature protection for exhaust, etc., the high pressure protection is detected by the first pressure sensor 16, the first pressure sensor 16 is installed at the inlet of the condenser 2, and when the detected pressure of the first pressure sensor 16 exceeds the set upper limit pressure value, the compressor 1 enters the high pressure protection, and the refrigeration cycle circuit stops operating. The low-pressure protection is detected through a second pressure sensor 17, the second pressure sensor 17 is installed at an air suction port of the compressor 1, when the detection pressure of the second pressure sensor 17 is lower than a set lower limit pressure value, the compressor 1 enters the low-pressure protection, and the refrigeration cycle loop stops running. The exhaust high temperature protection is detected by an exhaust temperature sensing bulb 18, the exhaust temperature sensing bulb 18 is installed at an exhaust port of the compressor 1, when the detected temperature of the exhaust temperature sensing bulb 18 exceeds a set exhaust temperature, the compressor 1 enters the exhaust high temperature protection, and the refrigeration cycle loop stops running.
The setting of the fluorine-deficient temperature and the setting of the freezing temperature difference are taken as examples, the setting of the fluorine-deficient temperature is about-20 ℃, the setting of the freezing temperature difference is generally 10-15 ℃, each set value appearing in the text can be obtained through experimental statistics, and the temperature difference setting device can also be designed according to specific requirements in practical application, and the utility model discloses do not make special restriction to this.
In order to make the operation of the refrigeration cycle more stable and reliable, a filter 19 is arranged at the inlet of the throttling device 3 to prevent impurities in the refrigerant from blocking the throttling device 3, a fluorine filling nozzle 20 is arranged on the outlet pipeline of the condenser 2, the refrigerant can be supplemented through the fluorine filling nozzle 20 when the refrigeration cycle is short of fluorine, and the fluorine filling nozzle 20 is preferably arranged at the upstream of the filter 19.
In a specific application example of the cooling system, the refrigerant is R410A refrigerant, the cold storage medium is water, the processing equipment is a machine tool, and anti-freezing liquid can be mixed into the water for preventing the cold storage medium from freezing. In the cold accumulation mode, the cold supply switch valve 10 is closed, the cold accumulation switch valve 9 is opened, the compressor 1 works, the liquid pump 6 stops working, and the refrigerant enters the cold accumulation evaporator 8 to cool the water in the cold accumulation tank 7, so that the water temperature is reduced to-2 ℃. In the direct cooling mode, the cooling switch valve 10 is opened, the cold accumulation switch valve 9 is closed, the compressor 1 works, the liquid pump 6 works, the refrigerant enters the cooling evaporator 4 to cool the cold accumulation medium flowing through the second heat exchange pipeline, the inlet water temperature of the cooling circulation loop is 12 ℃, and the outlet water temperature of the cooling circulation loop is 7 ℃. In the cold supply mode of the cold storage tank 7, the cold supply switch valve 10 is closed, the cold storage switch valve 9 is opened, the compressor 1 stops operating, the liquid pump 6 operates, and water in the cold storage tank 7 is output. In the combined cooling mode, the cooling switch valve 10 is opened, the cold accumulation switch valve 9 is opened, the compressor 1 works, the liquid pump 6 works, one part of refrigerant enters the cold accumulation evaporator 8 to cool water in the cold accumulation box 7, and the other part of refrigerant enters the cooling evaporator 4 to cool water flowing through the second heat exchange pipeline.
The utility model discloses still provide the cooler, this cooler adopts foretell cooling system, and the cooler can be used in the lathe, and the import of cooling circulation circuit is as the import of cooler, and cooling circulation circuit's export is as the export of cooler, and the high temperature medium that the lathe flows out flows into the cooler from the import of cooler and cools down, and the low temperature medium after the cooling flows out from the export of cooler and gets into the lathe.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (12)
1. A cooling system, comprising: the cooling system comprises a refrigeration circulation loop and a cooling circulation loop used for cooling processing equipment, wherein an evaporator in the refrigeration circulation loop is a cooling evaporator, and the cooling evaporator is provided with a first heat exchange pipeline connected in the refrigeration circulation loop and a second heat exchange pipeline connected in the cooling circulation loop; the cold storage device is characterized in that the cooling circulation loop is provided with a liquid pump and a cold storage box used for storing a cold storage medium, the liquid pump, the cold storage box and the second heat exchange pipeline are connected in series, and a cold storage evaporator used for providing cold is arranged in the cold storage box.
2. The cooling system as claimed in claim 1, wherein the cold-storage evaporator and the cold-supply evaporator are connected in parallel in the same refrigeration cycle circuit.
3. The cooling system as claimed in claim 1, wherein the cold storage evaporator and the cold supply evaporator are connected in different refrigeration cycle circuits.
4. The cooling system according to claim 2, wherein the cold accumulation evaporator is connected in series with a cold accumulation switching valve; when the cold accumulation switch valve is opened, the cold accumulation evaporator is connected with the refrigeration cycle loop, and when the cold accumulation switch valve is closed, the cold accumulation evaporator is disconnected with the refrigeration cycle loop.
5. The cooling system according to claim 4, wherein the cooling evaporator is connected in series with a cooling switching valve; when the cold supply switch valve is opened, the cold supply evaporator is connected with the refrigeration cycle loop, and when the cold supply switch valve is closed, the cold supply evaporator is disconnected with the refrigeration cycle loop.
6. A cooling system according to claim 1, characterized in that a liquid level detection device for detecting the liquid level of the cold storage medium and/or a temperature detection device for detecting the temperature of the cold storage medium are further provided inside the cold storage tank.
7. The cooling system according to claim 6, wherein the liquid level detection device inside the cold storage tank adopts a liquid level switch, and the height of the liquid level switch is higher than the lowest point of the cold storage evaporator.
8. The cooling system as claimed in claim 1, wherein an inlet of the cooling evaporator is provided with an evaporation temperature bulb, and a compressor of the refrigeration cycle circuit controls the entering of the fluorine-deficient protection according to a detected temperature of the evaporation temperature bulb.
9. The cooling system according to claim 1, wherein an inlet temperature bulb and an outlet temperature bulb are respectively arranged at an inlet and an outlet of the cooling circulation loop, and a compressor of the refrigeration circulation loop is controlled to enter anti-freezing protection according to the temperature difference between the inlet temperature bulb and the outlet temperature bulb.
10. Cooling system according to any one of claims 1 to 9, characterised in that the cold storage medium is water.
11. A cooling machine characterized by employing the cooling system of any one of claims 1 to 10.
12. A machine tool having the cooling machine according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221901018.5U CN217619442U (en) | 2022-07-21 | 2022-07-21 | Cooling system, cooling machine, and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221901018.5U CN217619442U (en) | 2022-07-21 | 2022-07-21 | Cooling system, cooling machine, and machine tool |
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| Publication Number | Publication Date |
|---|---|
| CN217619442U true CN217619442U (en) | 2022-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221901018.5U Active CN217619442U (en) | 2022-07-21 | 2022-07-21 | Cooling system, cooling machine, and machine tool |
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|---|---|
| CN (1) | CN217619442U (en) |
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- 2022-07-21 CN CN202221901018.5U patent/CN217619442U/en active Active
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