CN104748452B - Multi-working-condition air conditioner water chilling unit capable of simultaneously preparing cold water with different temperatures - Google Patents
Multi-working-condition air conditioner water chilling unit capable of simultaneously preparing cold water with different temperatures Download PDFInfo
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- CN104748452B CN104748452B CN201510137449.7A CN201510137449A CN104748452B CN 104748452 B CN104748452 B CN 104748452B CN 201510137449 A CN201510137449 A CN 201510137449A CN 104748452 B CN104748452 B CN 104748452B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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Abstract
The invention relates to a multi-working-condition air-conditioning water chilling unit capable of simultaneously preparing cold water with different temperatures, which comprises a compressor, a condenser capable of providing water supply and return at 30-35 ℃ and 60-65 ℃, an evaporator capable of providing high-temperature cold water with the temperature of 15-20 ℃ or low-temperature cold water with the temperature of 7-12 ℃, a flash evaporation device with the function of quickly preparing ice slurry and an ice tank capable of providing circulating chilled water for preparing the ice slurry and 0-5 ℃ chilled water for deeply dehumidifying fresh air. The water chilling unit can provide cold water with various temperatures on one set of water chilling unit, meets the normal use requirements of high-quality treatment heat removal, dehumidification and conventional air conditioning systems in the temperature and humidity independent control air conditioning system and the living hot water requirements, can be used in various air conditioning systems in the form of a universal core water chilling unit, has the characteristics of simple and reasonable structure, reliable and energy-saving work, convenient use, strong universality, low setting cost and daily use cost, and has strong practicability and wide market application prospect.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment manufacturing, in particular to a multi-working-condition air conditioning water chilling unit capable of simultaneously preparing cold water at different temperatures.
Background
At present, more and more public buildings adopting a central air-conditioning system are adopted, and the problems of huge energy consumption of the central air-conditioning system, unsatisfactory quality of indoor environment air treatment and the like are increasingly revealed, so that the energy conservation of the central air-conditioning system and the further improvement of the indoor air quality become the subjects of common attention and research of the whole society. For an air conditioning system, the air conditioning system mainly plays a role in removing indoor waste heat, residual moisture, harmful gases and peculiar smell. The research shows that: the requirements of removing indoor residual humidity and harmful gas and peculiar smell are common, the task of removing indoor residual heat can be realized by providing deeply dehumidified dry fresh air for the indoor, the task of removing indoor residual heat needs to be realized by additionally arranging an independent temperature control system, and the temperature control system does not need to bear the dehumidification task, so the task of removing residual heat can be realized by using a cold source with higher temperature. The temperature and humidity independent control air conditioning system developed according to the method is put into practical use at present, and the advantages of the temperature and humidity independent control air conditioning system in the aspects of effectively reducing energy consumption and improving the quality of indoor environment air are preliminarily shown. However, in practice, it is found that two sets of independent air conditioner control systems for respectively controlling and adjusting the indoor temperature and humidity need to be arranged in the temperature and humidity independent control air conditioner system, one is a system for processing sensible heat (used for removing waste heat), and the system is composed of a high-temperature cold source and a waste heat elimination terminal device, water is used as an energy transmission medium, and a dehumidification task is not included, so that the water supply temperature of the cold source is not low-temperature cold water (namely a low-temperature cold source) at about 7 ℃ in the conventional condensation dehumidification air conditioner system, but can be increased to high-temperature cold water (namely a high-temperature cold source) at about 18 ℃, and the actual effect of saving energy consumption is brought; the other is a system for treating latent heat (used for dehumidifying residual humidity), which consists of a fresh air processing unit and an air supply end device, low-temperature cold water is used as an energy transmission medium, dry fresh air bears the humidity load, and the dry fresh air is mainly obtained by dehumidifying the fresh air through the low-temperature cold water (namely a low-temperature cold source) at present. As can be seen from the above, when the existing water chiller is applied to a temperature and humidity independent control air conditioning system, two cold source schemes are necessarily involved, two sets of water chiller need to be correspondingly arranged, one set of water chiller provides high-temperature cold water (i.e., a high-temperature cold source) for removing waste heat, and the other set of water chiller provides low-temperature cold water (i.e., a low-temperature cold source) for obtaining dry fresh air and dehumidifying; in addition, an air supply end device and a waste heat elimination end device are required to be arranged respectively. Therefore, the existing temperature and humidity independent control air conditioning system generally has the following characteristics: 1, the structure is complex, and the workload and difficulty of installation and debugging are high during the setting, so that the system setting cost is high; 2, the unit occupies a large building space and is not beneficial to popularization; 3, the cold water unit for dehumidifying is provided with conventional low-temperature cold water (namely a low-temperature cold source) of about 7 ℃ and cannot completely meet the dryness requirement of deep dehumidification of fresh air. Therefore, the method is not ideal from the viewpoint of both practicality and economy, and improvements are necessary.
Disclosure of Invention
The invention aims to overcome the defects of the existing independent temperature and humidity control air conditioning system and provides the multi-working-condition air conditioning water chilling unit which is simple and reasonable in structure, convenient to set and low in cost and can simultaneously prepare cold water with different temperatures including ice slurry (low-temperature cold water), high-temperature cold water and reheated hot water on one set of water chilling unit according to needs.
The invention relates to a multi-working condition air-conditioning water chilling unit capable of simultaneously preparing cold water with different temperatures, which comprises a compressor, a condenser, an evaporator and an ice tank, and is characterized by also comprising a flash evaporation device which is composed of a flash evaporation evaporator, a flash evaporator and a communicating pipe arranged between the flash evaporation evaporator and the flash evaporator and has the function of rapidly preparing ice slurry, wherein a water supply and return channel of the condenser is provided with a water supply and return channel A at 30-35 ℃ and a water supply and return channel B at 60-65 ℃, a refrigerant pipeline of the evaporator is provided with a throttling regulating valve A, a water supply and return channel C is provided with a water supply control pump, and high-temperature cold water at 15-20 ℃ or low-temperature cold water at 7-12 ℃ can be respectively output on the water supply and return channel C by respectively setting the evaporation temperatures of the evaporator 3 at 13 +/-1 ℃ and 6 +/-1 ℃ according to requirements: a throttling regulating valve B is arranged on a refrigerant pipeline of the flash evaporation evaporator, two ends of the refrigerant pipeline are connected with two ends of the refrigerant pipeline of the evaporator, which is provided with the throttling regulating valve A, in parallel, a vacuum pump is also arranged on a side wall body of the flash evaporation evaporator, and an ice slurry pump A communicated with the upper part of the ice tank is arranged on a bottom wall body; the top of the inner cavity of the flash evaporator is provided with a chilled water spray head, and the bottom wall body is provided with an ice slurry pump B communicated with the upper part of the ice groove; a chilled water control pump A communicated with the chilled water spray head is arranged on the side wall of the lower part of the ice tank, and a 0-5 ℃ low-temperature chilled water supply and return water channel D with a chilled water control pump B is arranged at the bottom of the ice tank; when the flash evaporation device works, the evaporation temperature of the flash evaporation device is set to be-2 ℃, then the flash evaporation device is vacuumized by an evaporator vacuum pump, when circulating chilled water is sprayed into a cavity at the top of the flash evaporation device and is suddenly exposed to an environment lower than the saturated pressure of the cavity, the initial equilibrium state is changed into an overheating state, the overheating amount in the circulating chilled water is quickly converted into latent heat easy to evaporate, the latent heat is atomized and flashed to form water droplet steam bubbles, a part of water droplets are vaporized to take away heat to form chilled water at about 0 ℃, and most of the water droplets are cooled and frozen to form ice slurry; the prepared ice slurry and chilled water at about 0 ℃ are sent into an ice tank through an ice slurry pump A and an ice slurry pump B, and are automatically stored in the ice tank in the form of upper ice slurry and lower low-temperature chilled water; the low-temperature chilled water at the bottom of the ice tank is partially used as circulating chilled water to return to the cavity of the flash evaporation device to prepare ice slurry under the control of the chilled water control pump A, and is partially output under the control of the chilled water control pump B to form a low-temperature cold source capable of directly providing 0-5 ℃ chilled water for an air conditioning system comprising a temperature and humidity independent control system.
When the multi-working-condition air conditioning water chilling unit is used, the multi-working-condition air conditioning water chilling unit can be used as a universal core unit, and can be used for simultaneously providing high-temperature cold water, removing waste heat water chilling unit, providing low-temperature cold water, obtaining dry fresh air and dehumidifying two sets of water chilling units in the existing independent temperature and humidity control system, and can also be used as the water chilling units of the existing conventional air conditioning system. Wherein: the high-temperature cold water at the temperature of 15-20 ℃ can be used for removing waste heat in a temperature and humidity independent control system; the low-temperature cold water with the temperature of 7-12 ℃ can be used for removing residual moisture in the conventional air conditioning system; the low-temperature chilled water at the temperature of 0-5 ℃ can be used for deeply dehumidifying air from the outside or the inside in a temperature and humidity independent control system to obtain standard-reaching dry fresh air; the 30-35 ℃ supply and return water can be used for a reheating section in the conventional air-conditioning system; the 60-65 ℃ supply and return water can be used in a preheating section of a domestic hot water system.
The multi-working-condition air-conditioning water chilling unit can simultaneously prepare cold water with different temperatures based on the conception, and the flash evaporation device with the function of flash evaporating the chilled water into ice slurry is additionally arranged in the traditional water chilling unit, so that the ice tank can output low-temperature chilled water with the temperature of 0-5 ℃ lower than the water supply temperature of a conventional low-temperature cold source, and the requirements of deeply dehumidifying fresh air and obtaining up-to-standard dry fresh air are fully met; because the evaporation temperature of the evaporator can be set as required, the 15-20 ℃ high-temperature cold water which can meet the requirement of removing the residual heat in the temperature and humidity independent control air conditioning system or the 7-12 ℃ low-temperature cold water which can be used for the conventional air conditioning system can be obtained; because two water supply and return channels are arranged in the water supply and return channel of the condenser, the water supply and return at the temperature of 30-35 ℃ for the reheating section of the conventional air conditioning system and the water supply and return at the temperature of 60-65 ℃ for the preheating section of the domestic hot water system are obtained. Therefore, the invention can provide cold water with various temperatures on one set of water chilling unit, meet the use requirements of heat removal and dehumidification in the temperature and humidity independent control air conditioning system, and can also meet the normal use requirements of the conventional air conditioning system and the water supply requirements of the preheating section of the domestic hot water system. Therefore, the water supply function of the cold water with different temperatures required by various existing air conditioning systems is comprehensively provided, two sets of water chilling units in the existing temperature and humidity independent control air conditioning system can be effectively replaced, the temperature and humidity independent control technology is implemented on one set of water chilling unit, a better treatment effect can be achieved compared with the existing temperature and humidity independent control air conditioning system consisting of two sets of systems, the water supply system can also be used in other conventional air conditioning systems in the form of a universal core water chilling unit, the structure is simple, scientific and reasonable, the work is reliable and energy-saving, the use is convenient and strong, the setting cost and the daily use cost are low, and the water supply system obviously has strong practicability, economy and a valuable market application prospect.
Drawings
Fig. 1 is a schematic diagram of the basic structure of the embodiment of the present invention.
In the figure:
1. compressor 2, condenser 21, water supply and return channel A22, water supply and return channel B
3. Evaporator 31, throttle regulating valve A32, water supply control pump 33, water supply and return channel C
4. An ice tank 41, a chilled water control pump A42, a chilled water control pump B43, a water supply and return channel D
5. Flash evaporation device 51, flash evaporation device 511, throttle regulating valve B512 and vacuum pump
513. Ice slurry pump A52, flash evaporator 521, chilled water spray head 522, ice slurry pump B
53. A communication pipe is provided.
Detailed Description
The invention will be further described with reference to the figures and the exemplary embodiments.
In figure 1, the multi-working condition air conditioning water chilling unit capable of simultaneously preparing cold water with different temperatures of the invention comprises a compressor 1, a condenser 2, an evaporator 3 and an ice tank 4, and is characterized by further comprising a flash evaporation device 5 which is composed of a flash evaporation evaporator 51, a flash evaporator 52 and a communicating pipe 53 arranged between the flash evaporation evaporator 51 and the flash evaporator 52 and has the function of rapidly preparing ice slurry, a water supply and return channel of the condenser 2 is provided with a water supply and return channel A21 of 30-35 ℃ and a water supply and return channel B22 of 60-65 ℃, a refrigerant pipeline of the evaporator 3 is provided with a throttle regulating valve A31, a water supply and return channel C33 is provided with a water supply control pump 32, and high-temperature cold water of 15-20 ℃ or low-temperature cold water of 7-12 ℃ can be respectively output on the water supply and return channel A33 by respectively setting the evaporation temperatures of the evaporator 3 to be 13 +/-1 ℃ and 6 +/-1 ℃ as required, wherein: a throttling regulating valve B511 is arranged on a refrigerant pipeline of the flash evaporator 51, two ends of the refrigerant pipeline are connected with two ends of the refrigerant pipeline of the evaporator 3 on which the throttling regulating valve A31 is arranged in parallel, a vacuum pump 512 is also arranged on a side wall body of the flash evaporator 51, and an ice slurry pump A513 communicated with the upper part of the ice tank 4 is arranged on a bottom wall body; a chilled water spray head 521 is arranged at the top of the inner cavity of the flash evaporator 52, and an ice slurry pump B522 communicated with the upper part of the ice groove 4 is arranged on the wall body at the bottom; a chilled water control pump A41 communicated with the chilled water spray head 521 is arranged on the side wall of the lower part of the ice tank 4, and a 0-5 ℃ low-temperature chilled water supply and return water channel D43 with a chilled water control pump B42 is arranged at the bottom; when the flash evaporation device 5 works, firstly, the evaporation temperature of the flash evaporation device 51 is set to be-2 ℃, then the flash evaporation device 5 is vacuumized by the evaporator vacuum pump 512, when circulating chilled water is sprayed into a cavity at the top of the flash evaporation device 52 and is suddenly exposed to an environment lower than the saturation pressure of the cavity, the initial equilibrium state is changed into an overheating state, the overheating amount in the circulating chilled water is quickly converted into latent heat easy to evaporate, the latent heat is atomized and flashed to form water droplet steam bubbles, a part of water droplets are vaporized to take away heat and then become chilled water at about 0 ℃, and most of the water droplets are cooled and frozen to form ice slurry; the prepared ice slurry and chilled water at about 0 ℃ are sent into an ice tank 4 through an ice slurry pump A513 and an ice slurry pump B522, and are automatically stored in the ice tank 4 in the form of upper ice slurry and lower low-temperature chilled water; the low-temperature chilled water at the bottom of the ice tank 4 is partially used as circulating chilled water to return to the cavity of the flash evaporation device 5 to prepare ice slurry under the control of a chilled water control pump A41, and is partially output under the control of a chilled water control pump B42 to form a low-temperature cold source capable of directly providing 0-5 ℃ chilled water for an air conditioning system comprising a temperature and humidity independent control system.
Claims (6)
1. The utility model provides a can prepare multiplex condition air conditioner cooling water set of different temperature cold water simultaneously, the main part includes compressor (1), condenser (2), evaporimeter (3), ice chest (4), its characterized in that still contains and is provided with by flash evaporator (51), flash evaporator (52) and setting up communicating pipe (53) between flash evaporator (51) and flash evaporator (52) constitute, flash evaporation device (5) with prepare ice thick liquid function fast, be provided with on the confession return water passageway of condenser (2) 30-35 ℃ confession return water passageway A (21) and 60-65 ℃ confession return water passageway B (22), be provided with throttle governing valve A (31) on the refrigerant pipeline of evaporimeter (3), be provided with on confession return water passageway C (33) water supply control pump (32), through setting for the evaporating temperature of evaporimeter (3) as required respectively for 13 +/-1 ℃ and 6 +/-1 ℃ -, The water supply and return channel C (33) can respectively output high-temperature cold water with the temperature of 15-20 ℃ or low-temperature cold water with the temperature of 7-12 ℃, wherein:
a throttling regulating valve B (511) is arranged on a refrigerant pipeline of the flash evaporator (51), two ends of the refrigerant pipeline are connected with two ends of the refrigerant pipeline of the evaporator (3) on which the throttling regulating valve A (31) is arranged in parallel, a vacuum pump (512) is also arranged on a side wall body of the flash evaporator (51), and an ice slurry pump A (513) communicated with the upper part of the ice tank (4) is arranged on a bottom wall body;
a chilled water spray head (521) is arranged at the top of the inner cavity of the flash evaporator (52), and an ice slurry pump B (522) communicated with the upper part of the ice groove (4) is arranged on the wall body at the bottom;
a chilled water control pump A (41) communicated with the chilled water spray head (521) is arranged on the side wall of the lower part of the ice tank (4), and a 0-5 ℃ low-temperature chilled water supply and return water channel D (43) with a chilled water control pump B (42) is arranged at the bottom;
when the flash evaporation device (5) works, the evaporation temperature of the flash evaporation evaporator (51) is set to-2 ℃, then the flash evaporation device (5) is vacuumized by an evaporator vacuum pump (512), when circulating chilled water is sprayed into a cavity at the top of the flash evaporator (52) and is suddenly exposed to an environment lower than the saturation pressure of the cavity, the circulating chilled water is converted into an overheating state from an initial equilibrium state, the overheating amount is quickly converted into latent heat easy to evaporate, the latent heat is atomized and flashed to form water droplet steam bubbles, a part of water droplets are vaporized to take away heat and then become chilled water at about 0 ℃, and most of water droplets are cooled and frozen to form ice slurry; the prepared ice slurry and chilled water at about 0 ℃ are sent into an ice tank (4) through an ice slurry pump A (513) and an ice slurry pump B (522), and are automatically stored in the ice tank (4) in the form of upper ice slurry and lower low-temperature chilled water; part of the low-temperature chilled water at the bottom of the ice tank (4) is used as circulating chilled water to return to the cavity of the flash evaporation device (5) to prepare ice slurry under the control of a chilled water control pump A (41), and part of the low-temperature chilled water is controlled by a chilled water control pump B (42) to be output to form a low-temperature cold source capable of directly providing 0-5 ℃ chilled water for an air conditioning system comprising a temperature and humidity independent control system;
when the multi-working-condition air conditioning water chilling unit is used, the multi-working-condition air conditioning water chilling unit can be used as a universal core unit, and can be used for simultaneously providing high-temperature cold water, removing waste heat water chilling unit, providing low-temperature cold water, obtaining dry fresh air and dehumidifying two sets of water chilling units in the existing independent temperature and humidity control system, and can also be used as the water chilling units of the existing conventional air conditioning system.
2. The multi-working-condition air-conditioning water chilling unit capable of simultaneously producing cold water of different temperatures according to claim 1, wherein the high-temperature cold water of 15-20 ℃ can be used for removing waste heat in a temperature and humidity independent control system.
3. The multi-operating-condition air conditioning water chilling unit capable of simultaneously preparing cold water of different temperatures according to claim 1, wherein the low-temperature cold water of 7-12 ℃ can be used for dehumidification of an existing conventional air conditioning system.
4. The multi-operating-condition air-conditioning water chilling unit capable of simultaneously preparing cold water at different temperatures according to claim 1, wherein the 0-5 ℃ chilled water can be used for deeply dehumidifying air from outdoors or indoors and obtaining up-to-standard dry fresh air in a temperature and humidity independent control system.
5. The multi-operating-condition air-conditioning water chilling unit capable of simultaneously preparing cold water of different temperatures according to claim 1, wherein the supply water at 30-35 ℃ can be used for a reheating section of an existing conventional air-conditioning system.
6. The multi-operating-condition air-conditioning water chilling unit capable of simultaneously preparing cold water with different temperatures according to claim 1, wherein the 60-65 ℃ supply and return water can be used in a preheating section of a domestic hot water system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510137449.7A CN104748452B (en) | 2015-03-27 | 2015-03-27 | Multi-working-condition air conditioner water chilling unit capable of simultaneously preparing cold water with different temperatures |
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| CN201510137449.7A CN104748452B (en) | 2015-03-27 | 2015-03-27 | Multi-working-condition air conditioner water chilling unit capable of simultaneously preparing cold water with different temperatures |
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| CN104748452A CN104748452A (en) | 2015-07-01 |
| CN104748452B true CN104748452B (en) | 2020-06-19 |
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| CN113834232A (en) * | 2021-10-12 | 2021-12-24 | 珠海格力智能装备有限公司 | Cooling device |
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|---|---|---|---|---|
| WO1982003679A1 (en) * | 1981-04-13 | 1982-10-28 | Villadsen Vagn Hovgaard | A method and a system for production of loose ice at large capacity |
| CN200982780Y (en) * | 2006-10-27 | 2007-11-28 | 上海海事大学 | Water steam compression type binary ice vacuum preparation device |
| CN200986354Y (en) * | 2006-12-26 | 2007-12-05 | 上海海事大学 | Vacuum freezing steam absorbing type binary ice preparing device |
| CN201555406U (en) * | 2009-12-01 | 2010-08-18 | 上海理工大学 | Vacuum ice making system utilizing media to improve system performance |
| CN201903212U (en) * | 2010-12-30 | 2011-07-20 | 福建雪人股份有限公司 | Vacuum slurry ice and cold water making device |
| CN201983553U (en) * | 2011-03-09 | 2011-09-21 | 上海海事大学 | Wind-driven binary ice preparing device through vacuum steam compression method |
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2015
- 2015-03-27 CN CN201510137449.7A patent/CN104748452B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003679A1 (en) * | 1981-04-13 | 1982-10-28 | Villadsen Vagn Hovgaard | A method and a system for production of loose ice at large capacity |
| CN200982780Y (en) * | 2006-10-27 | 2007-11-28 | 上海海事大学 | Water steam compression type binary ice vacuum preparation device |
| CN200986354Y (en) * | 2006-12-26 | 2007-12-05 | 上海海事大学 | Vacuum freezing steam absorbing type binary ice preparing device |
| CN201555406U (en) * | 2009-12-01 | 2010-08-18 | 上海理工大学 | Vacuum ice making system utilizing media to improve system performance |
| CN201903212U (en) * | 2010-12-30 | 2011-07-20 | 福建雪人股份有限公司 | Vacuum slurry ice and cold water making device |
| CN201983553U (en) * | 2011-03-09 | 2011-09-21 | 上海海事大学 | Wind-driven binary ice preparing device through vacuum steam compression method |
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