CN112665033A - Double-cold-source dehumidifying unit - Google Patents
Double-cold-source dehumidifying unit Download PDFInfo
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- CN112665033A CN112665033A CN202011420331.2A CN202011420331A CN112665033A CN 112665033 A CN112665033 A CN 112665033A CN 202011420331 A CN202011420331 A CN 202011420331A CN 112665033 A CN112665033 A CN 112665033A
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Abstract
The invention provides a double-cold-source dehumidifying unit, relates to the technical field of dehumidifiers, and solves the technical problem that an existing double-cold-source dehumidifying system cannot be normally used in transition seasons or due to insufficient external cold sources. The double-cold-source dehumidifying unit comprises a dehumidifier. The unit comprises a fresh air dehumidification system and a refrigerant refrigeration circulating system, wherein the fresh air dehumidification system comprises a precooling device, a first refrigerant evaporator, a first condenser and a blower which are sequentially arranged, the precooling device comprises a coil surface cooler and a second refrigerant evaporator which are arranged between an air inlet of the unit and the first refrigerant evaporator, and when one of the coil surface cooler and the second refrigerant evaporator works, the other one stops working; when the second refrigerant evaporator works, the second refrigerant evaporator can be communicated with the refrigerant refrigeration circulating system to cool and dehumidify fresh air entering through the air inlet of the unit. The invention is used for achieving the effect of controlling the temperature and the humidity by double cold sources when the cold sources are insufficient or the external cold sources are insufficient in spring and summer.
Description
Technical Field
The invention relates to the technical field of dehumidifiers, in particular to a double-cold-source dehumidifier unit.
Background
Because some special industries can not adopt return air circulation and the requirement of people on the indoor air quality is improved, the fresh air dehumidifier is produced. The fresh air dehumidifier is a dehumidifying device which carries out humidity reduction and temperature adjustment treatment on external fresh air, and sends the fresh air into a specific space after meeting the requirements set by a user.
Present industrial product environment requires more and more high to indoor air temperature and humidity, use two cold source dehumidification units in more and more industrial use, can guarantee toward the suitable new trend of indoor transport humiture, the structure of current two cold source dehumidification unit is shown in figure 1, the new trend gets into the unit through new trend entry 1, carry out dehumidification for the first time through water coil pipe 2 (accepting outside cold source), carry out dehumidification for the second time through fin evaporimeter 3 after the dehumidification, reheat by fin condenser 4 again, the wind after the reheat is sent into indoorly by fan 5 again, give the new trend of indoor transport constant temperature and humidity.
The applicant has found that the prior art has at least the following technical problems:
when the external cold supply is in a transition season or lack, the double-cold-source dehumidifier unit system cannot carry out heat and humidity treatment on outdoor fresh air, the double-cold-source dehumidifier unit fails, the utilization rate is low, and the expected effect of the system cannot be achieved.
Disclosure of Invention
The invention aims to provide a double-cold-source dehumidification unit, which solves the technical problem that the existing double-cold-source dehumidification system cannot be normally used in transition seasons or due to insufficient external cold sources in the prior art. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a double-cold-source dehumidifying unit, which comprises a fresh air dehumidifying system and a refrigerant refrigerating circulation system, wherein the fresh air dehumidifying system comprises a precooling device, a first refrigerant evaporator, a first condenser and a blower which are arranged in sequence,
the precooling device comprises a coil surface cooler and a second refrigerant evaporator which are arranged between the air inlet of the unit and the first refrigerant evaporator, and when one of the coil surface cooler and the second refrigerant evaporator works, the other one stops working; when the second refrigerant evaporator works, the second refrigerant evaporator can be communicated with the refrigerant refrigeration circulating system to cool and dehumidify fresh air entering through the air inlet of the unit.
Preferably, the refrigerant refrigeration cycle system includes a compressor, a first condenser, a second condenser and a first refrigerant evaporator connected to each other, and the second refrigerant evaporator is connected in parallel with the first refrigerant evaporator.
Preferably, a first throttling element is arranged between the first condenser and the first refrigerant evaporator, and a second throttling element is arranged between the second condenser and the first refrigerant evaporator.
Preferably, the second refrigerant evaporator is connected in parallel with the first refrigerant evaporator through a connecting pipeline, and a third throttling element and an electromagnetic valve are arranged on the connecting pipeline and a refrigerant inlet end of the second refrigerant evaporator.
Preferably, the double-cold-source dehumidification unit adopts an upper-lower double-layer structure, wherein the fresh air dehumidification system is located at an upper layer, and the refrigerant refrigeration cycle system is located at a lower layer.
Preferably, the second condenser is a shell-and-tube condenser or an air-cooled condenser.
Preferably, the first condenser is a fin condenser, and the first condenser is further provided with a cold water inlet and a cold water outlet.
Preferably, the blower is disposed near the unit outlet.
Preferably, the first throttling element, the second throttling element and the third throttling element are all electronic expansion valves.
Preferably, a wet bulb sensor and a temperature sensor are arranged on the first condenser to detect the humidity and the temperature of fresh air flowing through the first condenser.
The invention provides a double-cold-source dehumidifying unit which comprises a fresh air dehumidifying system and a refrigerant refrigerating circulation system, wherein the fresh air dehumidifying system comprises a precooling device, a first refrigerant evaporator, a first condenser and a blower which are sequentially arranged, the precooling device comprises a coil surface air cooler and a second refrigerant evaporator which are arranged between an air inlet of the unit and the first refrigerant evaporator, and when one of the coil surface air cooler and the second refrigerant evaporator works, the other one stops working; when the second refrigerant evaporator works, the second refrigerant evaporator can be communicated with the refrigerant refrigeration circulating system to cool and dehumidify fresh air entering through the air inlet of the unit. Under the condition of an external cold source, fresh air enters the unit through the air inlet, is subjected to primary dehumidification through the coil surface air cooler (receiving the external cold source), is subjected to secondary dehumidification through the first refrigerant evaporator after dehumidification, is reheated by the first condenser, and is sent into a room through the air feeder to convey constant-temperature and constant-humidity fresh air into the room; when meeting crossing in spring and summer, or when external cold source stopped using, but two cold source dehumidification units automatic switch-over self-control cold source (second refrigerant evaporimeter begins work), refrigerant in the refrigerant refrigeration cycle system gets into the second refrigerant evaporimeter, it dehumidifies to replace external cold source, reach the effect of first round dehumidification equally, dehumidify again through first refrigerant evaporimeter after the dehumidification, the new trend is reheated by first condenser again, the wind after the reheat is sent into indoorly by the forced draught blower again, play the regulation new trend humiture requirement equally, accomplish the requirement of two cold source dehumidification systems annual control humiture.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a dual cold source dehumidification unit in the prior art;
FIG. 2 is a schematic structural diagram of a dual cold source dehumidifier unit according to an embodiment of the present invention;
fig. 3 is a system schematic diagram of a dual cold source dehumidification unit according to an embodiment of the present invention.
Reference numerals: 1. a fresh air inlet; 2. a water coil pipe; 3. a finned evaporator; 4. a finned condenser; 5. a fan; 6. an air inlet of the unit; 7. a first refrigerant evaporator; 8. a coil surface cooler; 9. a second refrigerant evaporator; 10. a first condenser; 11. a blower; 12. a compressor; 13. a second condenser; 14. a first throttling element; 15. a second throttling element; 16. a third throttling element; 17. an electromagnetic valve; 18. a wet bulb sensor; 19. a temperature sensor; 20. and an air outlet of the unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 2 and 3, the invention provides a dual-cold-source dehumidifier unit, which comprises a fresh air dehumidification system and a refrigerant refrigeration cycle system, wherein the dual-cold-source dehumidifier unit in the embodiment adopts an upper-lower double-layer structure, the fresh air dehumidification system is positioned at an upper layer, and the refrigerant refrigeration cycle system is positioned at a lower layer. Therefore, the occupied area of the unit is reduced, and the transportation and the installation are convenient.
The fresh air dehumidification system comprises a precooling device, a first refrigerant evaporator 7, a first condenser 10 and a blower 11 which are sequentially arranged, a refrigerant refrigeration circulating system comprises a compressor 12, the first condenser 10, a second condenser 13 and the first refrigerant evaporator 7 which are connected, wherein the precooling device comprises a coil surface cooler 8 and a second refrigerant evaporator 9, the coil surface cooler 8 and the second refrigerant evaporator 9 are arranged between a unit air inlet 6 and the first refrigerant evaporator 7 of the double-cold-source dehumidification unit, and when one of the coil surface cooler 8 and the second refrigerant evaporator 9 works, the other one stops working; when the second refrigerant evaporator 9 works, the second refrigerant evaporator 9 can be communicated with a refrigerant refrigeration cycle system to cool and dehumidify fresh air entering through the air inlet 6 of the unit.
A first throttling element 14 is arranged between the first condenser 10 and the first refrigerant evaporator 7, and a second throttling element 15 is arranged between the second condenser 13 and the first refrigerant evaporator 7. The second refrigerant evaporator 9 is connected in parallel with the first refrigerant evaporator 7 through a connecting pipeline, and the connecting pipeline and the refrigerant inlet end of the second refrigerant evaporator 9 are provided with a third throttling element 16 and an electromagnetic valve 17. Preferably, the first throttling element 14, the second throttling element 15 and the third throttling element 16 are all electronic expansion valves. The first condenser 10 is a fin condenser, and the first condenser 10 is further provided with a cold water inlet and a cold water outlet. The second condenser 13 is a shell-and-tube condenser.
The working principle of the double-cold-source dehumidifier unit provided by the invention under the condition of an external cold source and the condition of no external cold source is specifically explained as follows:
(1) there is an external cold source:
this new trend dehumidification system is including the coil surface cooler 8 that sets gradually, first refrigerant evaporimeter 7, fin condenser and forced draught blower 11, the new trend enters into coil surface cooler 8 (accepts outside cold source) by unit air intake 6, carry out the condensation dehumidification by outside cold source, accomplish dehumidification for the first time after coil surface cooler 8, the new trend reenters first refrigerant evaporimeter 7 this moment, accomplish the dehumidification for the second time, the new trend after the dehumidification for the second time is again through fin condenser, reheat by fin condenser, thereby promote the new trend temperature, the new trend reaches indoor required temperature and humidity after again by forced draught blower 11 transport indoor. This two cold sources dehumidification unit adopts coil surface cooler 8 and first refrigerant evaporimeter 7 to carry out cooling dehumidification twice to the new trend and handles, and the high temperature cold water precooling new trend of make full use of reduces from taking compressor 12 power, improves the unit efficiency.
The refrigerant refrigeration cycle system comprises a compressor 12, a fin condenser, a shell and tube condenser and a first refrigerant evaporator 7 which are connected, a first throttling element 14 is arranged between the fin condenser and the first refrigerant evaporator 7, and second throttling elements 15 are arranged between the shell and tube condenser and the first refrigerant evaporator 7. The air is exhausted to the fin condenser and the shell and tube condenser through the compressor 12, the refrigerant is condensed and returns to the first refrigerant evaporator 7 through the first throttling element 14 and the second throttling element 15, and enters the vapor-liquid separator and returns to the compressor 12 after being evaporated by the first refrigerant evaporator 7, so that the refrigeration cycle is completed; at this time, an external cold source is provided, and the second refrigerant evaporator 9 does not work. By adopting a double-condenser (a fin condenser and a shell and tube condenser) structure, not only is the condensate water generated by fresh air supply avoided, but also the condensing temperature is reduced, and the heat exchange efficiency is improved.
(2) Under the condition of no external cold source:
the fresh air dehumidification system comprises a second refrigerant evaporator 9, a first refrigerant evaporator 7, a fin condenser and a blower 11 which are arranged in sequence. Fresh air enters the second refrigerant evaporator 9 (participates in work) from the air inlet 6 of the unit, primary dehumidification is completed after the fresh air passes through the second refrigerant evaporator 9, the fresh air enters the first refrigerant evaporator 7 again at the moment, secondary dehumidification is completed, the fresh air reaches preset humidity after two-wheel dehumidification, dehumidification is completed, the dehumidified fresh air passes through the fin condenser and is reheated by the fin condenser, the temperature of the fresh air is increased, and the fresh air reaches indoor required temperature and humidity and is then conveyed to the room by the air feeder 11.
The refrigerant refrigeration cycle system comprises a compressor 12, a fin condenser, a shell and tube condenser, a first refrigerant evaporator 7 and a second refrigerant evaporator 9 which are connected with each other. The refrigerant is exhausted to the fin condenser and the shell and tube condenser through the compressor 12, the refrigerant is condensed and then returns to the first refrigerant evaporator 7 through the first throttling element 14 and the second throttling element 15, the electromagnetic valve 17 is opened at the moment, the third throttling element 16 works to adjust the flow entering the first refrigerant evaporator 7 and the second refrigerant evaporator 9, the fresh air reaches the preset humidity, the refrigerant enters the vapor-liquid separator after entering the first refrigerant evaporator 7 and the second refrigerant evaporator 9 to be evaporated and then returns to the compressor 12, and the refrigeration cycle is completed; at this time, no external cold source is available, the second refrigerant evaporator 9, the solenoid valve 17 and the third throttling element 16 are put into operation, and the compressor 12 needs to be subjected to frequency boosting synchronously due to the increase of the working load.
The shell-and-tube condenser may be replaced with an air-cooled condenser, and the blower 11 is disposed near the unit outlet 20. In addition, a wet bulb sensor 18 and a temperature sensor 19 are arranged on the fin condenser, so that the humidity and the temperature of the fresh air flowing through the first condenser 10 can be conveniently detected.
According to the double-cold-source dehumidifying unit provided by the invention, under the condition that an external cold source exists, fresh air enters the unit through the air inlet, is subjected to primary dehumidification through the coil surface air cooler 8 (receiving the external cold source), is subjected to secondary dehumidification through the first refrigerant evaporator 7 after being dehumidified, is reheated by the first condenser 10, and the reheated air is sent into a room through the air feeder 11 to convey constant-temperature and constant-humidity fresh air into the room; when meeting crossing in spring and summer, or when external cold source stops using, but two cold source dehumidification units automatic switch-over self-control cold source (second refrigerant evaporimeter 9 begins work), refrigerant in the refrigerant refrigeration cycle system gets into second refrigerant evaporimeter 9, it dehumidifies to replace external cold source, reach the effect of first round dehumidification equally, dehumidify again through first refrigerant evaporimeter 7 secondary after the dehumidification, the new trend is reheated by first condenser 10 again, the wind after the reheating is sent into indoorly by forced draught blower 11 again, play the new trend requirement of adjusting the humiture equally, accomplish the requirement of two cold source dehumidification systems annual control humiture.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A double-cold-source dehumidifier unit is characterized by comprising a fresh air dehumidifying system and a refrigerant refrigerating cycle system, wherein the fresh air dehumidifying system comprises a precooling device, a first refrigerant evaporator, a first condenser and a blower which are arranged in sequence,
the precooling device comprises a coil surface cooler and a second refrigerant evaporator which are arranged between the air inlet of the unit and the first refrigerant evaporator, and when one of the coil surface cooler and the second refrigerant evaporator works, the other one stops working; when the second refrigerant evaporator works, the second refrigerant evaporator can be communicated with the refrigerant refrigeration circulating system to cool and dehumidify fresh air entering through the air inlet of the unit.
2. The dual cold source dehumidifier unit of claim 1, wherein the refrigerant refrigeration cycle system comprises a compressor, a first condenser, a second condenser and a first refrigerant evaporator connected to each other, and the second refrigerant evaporator is connected in parallel to the first refrigerant evaporator.
3. The dual cold source dehumidifier unit of claim 2, wherein a first throttling element is disposed between the first condenser and the first refrigerant evaporator, and a second throttling element is disposed between the second condenser and the first refrigerant evaporator.
4. The dual cold source dehumidifier unit of claim 3, wherein the second refrigerant evaporator is connected in parallel with the first refrigerant evaporator through a connection pipeline, and a third throttling element and a solenoid valve are disposed at the refrigerant inlet end of the connection pipeline and the second refrigerant evaporator.
5. The dual cold source dehumidifier set of claim 1, wherein said dual cold source dehumidifier set has a double-layered structure, wherein,
the fresh air dehumidification system is located on the upper layer, and the refrigerant refrigeration cycle system is located on the lower layer.
6. The dual cold source dehumidification unit of claim 2, wherein the second condenser is a shell and tube condenser or an air cooled condenser.
7. The dual cold source dehumidifier unit of claim 1, wherein said first condenser is a finned condenser, and said first condenser further comprises a cold water inlet and a cold water outlet.
8. The dual cold source dehumidification unit of claim 1, wherein said blower is disposed proximate to a unit air outlet.
9. The dual cold source dehumidification unit of claim 4, wherein the first throttling element, the second throttling element, and the third throttling element are electronic expansion valves.
10. The dual cold source dehumidifier set according to any one of claims 1 to 9, wherein a wet bulb sensor and a temperature sensor are disposed on the first condenser to detect the humidity and temperature of the fresh air flowing through the first condenser.
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| CN202011420331.2A CN112665033B (en) | 2020-12-07 | 2020-12-07 | Double-cold-source dehumidifying unit |
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| CN202011420331.2A CN112665033B (en) | 2020-12-07 | 2020-12-07 | Double-cold-source dehumidifying unit |
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| CN112665033A true CN112665033A (en) | 2021-04-16 |
| CN112665033B CN112665033B (en) | 2022-02-01 |
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| CN204141717U (en) * | 2014-09-24 | 2015-02-04 | 南京韩威南冷制冷集团有限公司 | The two cold source full fresh air dehumidifier group of a kind of family formula |
| CN205481659U (en) * | 2016-03-30 | 2016-08-17 | 亚奇百擎（北京）能源科技有限公司 | Constant temperature and humidity capillary air conditioner new trend double -cold -source dehumidification system |
| CN210951610U (en) * | 2019-11-08 | 2020-07-07 | 杭州卓邦环境设备有限公司 | Double-cold-source fresh air constant-temperature dehumidification system |
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2020
- 2020-12-07 CN CN202011420331.2A patent/CN112665033B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008108740A1 (en) * | 2007-03-02 | 2008-09-12 | Sirius Water Technologies Pte Ltd | System and method for atmospheric water generation over extended range of ambient temperatures |
| CN201827979U (en) * | 2010-09-21 | 2011-05-11 | 广州同方瑞风空调有限公司 | Evaporative condensing dual-temperature fresh air handling unit |
| CN103075764A (en) * | 2013-01-15 | 2013-05-01 | 广东省建筑科学研究院 | Double-cold source dehumidification air-conditioning unit |
| CN204141717U (en) * | 2014-09-24 | 2015-02-04 | 南京韩威南冷制冷集团有限公司 | The two cold source full fresh air dehumidifier group of a kind of family formula |
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