CN105135554A - Pre-cooling energy-saving dehumidifying system and method - Google Patents
Pre-cooling energy-saving dehumidifying system and method Download PDFInfo
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- CN105135554A CN105135554A CN201510595900.XA CN201510595900A CN105135554A CN 105135554 A CN105135554 A CN 105135554A CN 201510595900 A CN201510595900 A CN 201510595900A CN 105135554 A CN105135554 A CN 105135554A
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention discloses a pre-cooling energy-saving dehumidifying system and method, and belongs to the field of air conditioners. The dehumidifying system comprises a shell and a dehumidifying unit arranged in the shell. The dehumidifying unit is provided with a compressor, a water-cooled condenser, an air-cooled condenser, an expansion valve, a surface air cooler and an air-air plate heat exchanger. A first refrigerating medium circulating circuit is arranged among the compressor, the water-cooled condenser, the expansion valve and the surface air cooler. A second refrigerating medium circulating circuit is arranged among the compressor, the air-cooled condenser, the expansion valve and the surface air cooler. A first cooling water circulating circuit is arranged between the water-cooled condenser and an external cooling water system. Indoor air sequentially flows through the air-air plate heat exchanger, the surface air cooler, the air-air plate heat exchanger and the air-cooled condenser and is then sent into an air dehumidifying channel arranged indoors. The dehumidifying system has the advantages of being simple in structure, low in energy consumption and high in stability; the dehumidifying method corresponding to the dehumidifying system has the advantages of being easy to implement and flexible to control.
Description
Technical field
The present invention relates to a kind of dehumidification system and dehumanization method of filed of air conditioning, especially relate to a kind of the heat-pump-type freeze drying system and the dehumanization method thereof that possess precooling function.
Background technology
In filed of air conditioning, dehumidifying to air is wherein important program.Traditional cooled dehumidifier unit mainly utilizes compression refrigeration principle by Air flow and removes steam, to realize the object that dehumidifies.But the humidity load of removing in this dehumidification mode is born by refrigeration system, causes the moisture removal of overall unit unit of electrical energy lower, and function singleness.Based on this situation, those skilled in the art have researched and developed a unit double system fresh air dehumidifier, as CN1699855, it is provided with casing and is arranged on evaporimeter, air-cooled condenser, compressor, water-cooled condenser, device for drying and filtering, expansion valve, hot gas bypass valve, water fender, the blower fan in casing, be provided with cooling coil before evaporimeter, cooling coil and water-cooled condenser are in series, to reduce the air-treatment scope of refrigeration system, cold water, after cooling coil heat absorption, enters water-cooled condenser.It is compared with common dehumidifier, and unit of electrical energy moisture removal increases than common dehumidifier.But it is in practical work process, the temperature of air when not entering cooling coil is in 26 DEG C substantially, and after evaporator cools, air themperature is down to about 10 DEG C, because this temperature is too low, be not suitable for directly sending into indoor, need to heat to air, cause the secondary waste of the energy.
Summary of the invention
The object of this invention is to provide a kind of precooling energy-saving dehumidifying system and dehumanization method thereof, dehumidification system has that structure is simple, energy consumption is low, the advantage of good stability; Dehumanization method has to be implemented easily, controls advantage flexibly.
For the moisture removal solving cooled dehumidifier unit unit of electrical energy in prior art is lower, function singleness, the technical problem wasted energy, a kind of precooling energy-saving dehumidifying system of the present invention, comprise housing and be arranged at the dehumidifying unit in housing, dehumidifying unit is provided with compressor, water-cooled condenser, air-cooled condenser, expansion valve, the gentle gas plate type heat exchanger of surface cooler; Compressor, water-cooled condenser, between expansion valve and surface cooler, be provided with the first refrigeration working medium closed circuit, compressor, air-cooled condenser, be provided with the second refrigeration working medium closed circuit between expansion valve and surface cooler, the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit alternate run under normal mode and energy saver mode; The first cooling water circulation loop is provided with between water-cooled condenser and external refrigeration water system; Room air is sent into indoor path again and is provided with air dewetting air channel after flowing through gas gas plate type heat exchanger, surface cooler, gas gas plate type heat exchanger, air-cooled condenser successively, the porch in described air dewetting air channel is provided with blower fan.
Further, a kind of precooling energy-saving dehumidifying system of the present invention, wherein, is provided with the first refrigeration working medium passage and cooling-water duct, is provided with the second refrigeration working medium passage in air-cooled condenser, be provided with the 3rd refrigeration working medium passage in surface cooler in described water-cooled condenser; The first air channel arranged in a crossed manner and the second air channel is provided with in gas gas plate type heat exchanger; Flow to by arranging three-way control valve conversion refrigeration working medium between described first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit;
Described first refrigeration working medium closed circuit is, the liquid outlet of compressor passes through the inlet of pipeline connecting tee control valve, a liquid outlet of three-way control valve connects the inlet of the first refrigeration working medium passage in water-cooled condenser by pipeline, in water-cooled condenser, the liquid outlet of the first refrigeration working medium passage connects the inlet of expansion valve by pipeline, the liquid outlet of expansion valve passes through the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler, and in surface cooler, the liquid outlet of the 3rd refrigeration working medium passage connects the inlet of compressor by pipeline;
Described second refrigeration working medium closed circuit is, the liquid outlet of compressor passes through the inlet of pipeline connecting tee control valve, another liquid outlet of three-way control valve connects the inlet of the second refrigeration working medium passage in air-cooled condenser by pipeline, in air-cooled condenser, the liquid outlet of the second refrigeration working medium passage connects the inlet of expansion valve by pipeline, the inlet of expansion valve passes through the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler, and in surface cooler, the liquid outlet of the 3rd refrigeration working medium passage connects the inlet of compressor by pipeline;
Described first cooling water circulation loop is, in water-cooled condenser, inlet and the liquid outlet of cooling-water duct to be communicated with external refrigeration water lines respectively by pipeline and to form loop;
Described air dewetting air channel is, room air sends into indoor passage after flowing through the second air channel in the first air channel in gas gas plate type heat exchanger, surface cooler, gas gas plate type heat exchanger, air-cooled condenser successively again.
Further, a kind of precooling energy-saving dehumidifying system of the present invention, wherein, the pipeline in described water-cooled condenser between the liquid outlet of the first refrigeration working medium passage and the inlet of expansion valve is provided with the first check valve; Pipeline in described air-cooled condenser between the liquid outlet of the second refrigeration working medium passage and the inlet connecing expansion valve is provided with the second check valve.
Further, a kind of precooling energy-saving dehumidifying system of the present invention, wherein, the front end being in gas gas plate type heat exchanger in described air dewetting air channel is also provided with coiled pipe cooler, is provided with the second cooling water circulation loop between described coiled pipe cooler and external refrigeration water system.
Further, a kind of precooling energy-saving dehumidifying system of the present invention, wherein, also comprises electric control unit, and electric control unit is used for controlling the electric distribution of parts each in unit and operational factor.
The dehumanization method of a kind of precooling energy-saving dehumidifying system provided by the invention, comprises the following steps:
(1) under there is people's situation normal condition indoor, close down the second refrigeration working medium closed circuit, open the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the first refrigeration working medium closed circuit, make cooling water circular flow in the first cooling water circulation loop;
(2) open blower fan, after guiding room air to flow through the second air channel in the first air channel in gas gas plate type heat exchanger, surface cooler, gas gas plate type heat exchanger, air-cooled condenser successively, send into indoor again;
(3) make refrigeration working medium in water-cooled condenser place release heat and carry out heat exchange with cooling water, making refrigeration working medium absorb heat at surface cooler place and carry out heat exchange with air.
Further, the dehumanization method of a kind of precooling energy-saving dehumidifying system provided by the invention, when being provided with coiled pipe cooler, also the second cooling water circulation loop should be opened in above-mentioned steps (1), in above-mentioned steps (2), before the first air channel allowing room air flow through in gas gas plate type heat exchanger, first flow through coiled pipe cooler.
The dehumanization method of another kind of precooling energy-saving dehumidifying system provided by the invention, comprises the following steps:
(1), in the indoor unmanned situation of situation vacation, open the second refrigeration working medium closed circuit, close down the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the second refrigeration working medium closed circuit;
(2) open blower fan, after guiding room air to flow through the second air channel in the first air channel in gas gas plate type heat exchanger, surface cooler, gas gas plate type heat exchanger, air-cooled condenser successively, send into indoor again;
(3) make refrigeration working medium in air-cooled condenser place release heat and carry out heat exchange with air, making refrigeration working medium absorb heat at surface cooler place and carry out heat exchange with air.
Further, the dehumanization method of another kind of precooling energy-saving dehumidifying system provided by the invention, when being provided with coiled pipe cooler, also the second cooling water circulation loop should be closed down in above-mentioned steps (1), in above-mentioned steps (2), before the first air channel allowing room air flow through in gas gas plate type heat exchanger, first flow through coiled pipe cooler.
A kind of precooling energy-saving dehumidifying system of the present invention and dehumanization method thereof are compared with prior art, have the following advantages: as the dehumidifying unit in dehumidification system, 1. the present invention is by arranging compressor, water-cooled condenser, air-cooled condenser, expansion valve, the gentle gas plate type heat exchanger of surface cooler, and at compressor, water-cooled condenser, first refrigeration working medium closed circuit is set between expansion valve and surface cooler, at compressor, air-cooled condenser, second refrigeration working medium closed circuit is set between expansion valve and surface cooler, first cooling water circulation loop is set between water-cooled condenser and external refrigeration water, gas gas plate type heat exchanger is flowed through successively at air, surface cooler, gas gas plate type heat exchanger, indoor channel setting air dewetting air channel is sent into again after air-cooled condenser.Just by the unlatching of control first refrigeration working medium closed circuit processed, the second refrigeration working medium closed circuit and the first cooling water circulation loop or can close down thus, make work of the present invention in different modes.Be specially: when there is people normal condition indoor, by closing down the second refrigeration working medium closed circuit, and open the first refrigeration working medium closed circuit and the first cooling water circulation loop, make work of the present invention in the normal mode, refrigeration working medium circular flow in the first refrigeration working medium closed circuit, on the one hand, refrigeration working medium absorbs heat at surface cooler place and carries out heat exchange with the air flowed through, air themperature is reduced and realizes freeze drying object, on the other hand, refrigeration working medium is in water-cooled condenser place release heat and carry out heat exchange with the first cooling water circulation loop, by the first cooling water circulation loop, heat is passed, air temperature control in suitable scope, in the normal mode, owing to having closed down the second refrigeration working medium closed circuit, air-cooled condenser is inoperative.When situation vacation indoor are unmanned, only need carry out dehumidification treatments to room air, and do not need to control air themperature, now by unlatching second refrigeration working medium closed circuit, and close down the first refrigeration working medium closed circuit and the first cooling water circulation loop, make work of the present invention in the power save mode, refrigeration working medium circular flow in the second refrigeration working medium closed circuit, on the one hand, refrigeration working medium absorbs heat at surface cooler place and carries out heat exchange with the air flowed through, and air themperature is reduced and realizes freeze drying object; On the other hand, refrigeration working medium is in air-cooled condenser place release heat and carry out heat exchange with the air flowed through, and air themperature is raised, owing to having closed down the first refrigeration working medium closed circuit and corresponding first cooling water circulation loop, greatly can reduce energy consumption, realize energy-conservation object.2. the present invention is by arranging gas gas plate type heat exchanger, room air is made to flow through the first air channel in gas gas plate type heat exchanger successively, surface cooler, the second air channel in gas gas plate type heat exchanger, indoor are sent into again after air-cooled condenser, in the process, flow through the air after surface cooler, can carry out heat exchange with refrigeration working medium makes temperature reduce, when it flows through the second air channel in gas gas plate type heat exchanger, heat exchange can be carried out as low-temperature receiver and the air just entering the first air channel in gas plate type heat exchanger, precooling treatment is carried out to the air just entering the first air channel in gas plate type heat exchanger, and therefore own temperature raises, the situation that temperature is too low can be avoided, this structural design, not only can make full use of the cold energy of cold air, realize recycling of the energy, reduce energy consumption, and the air themperature flowing through the first air channel can be made to reach relative equilibrium with the air themperature flowing through the second air channel, strengthen the stability of dehumidification system.As device systems corresponding except method, the dehumanization method of precooling energy-saving dehumidifying system provided by the invention has easy enforcement, controls feature flexibly.
Below in conjunction with detailed description of the invention shown in accompanying drawing, a kind of precooling energy-saving dehumidifying system of the present invention and dehumanization method thereof are described in further detail:
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the detailed description of the invention of a kind of precooling energy-saving dehumidifying system of the present invention;
In figure, 1 is compressor, and 2 is water-cooled condenser, and 3 is air-cooled condenser, and 4 is expansion valve, and 5 is surface cooler, and 6 is gas gas plate type heat exchanger, and 7 is three-way control valve, and 8 is the first check valve, and 9 is the second single valve, and 10 is coiled pipe cooler.
Detailed description of the invention
First it should be noted that, both provided a kind of precooling energy-saving dehumidifying system in the present invention, and further provided the dehumanization method of this precooling energy-saving dehumidifying system.As the detailed description of the invention of precooling dehumidification system, as shown in Figure 1, comprise housing generally and be arranged at the dehumidifying unit in housing, dehumidifying unit is provided with compressor 1, water-cooled condenser 2, air-cooled condenser 3, expansion valve 4, the gentle gas plate type heat exchanger 6 of surface cooler 5, and at compressor 1, water-cooled condenser 2, the first refrigeration working medium closed circuit is set between expansion valve 4 and surface cooler 5, allow the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit alternate run under normal mode and energy saver mode; At compressor 1, air-cooled condenser 3, the second refrigeration working medium closed circuit is set between expansion valve 4 and surface cooler 5; First cooling water circulation loop is set between water-cooled condenser 2 and external refrigeration water; Simultaneously and send into indoor channel setting after room air is flowed through gas gas plate type heat exchanger 6, surface cooler 5, gas gas plate type heat exchanger 6, air-cooled condenser 3 successively again and become air dewetting air channel, and blower fan is set in the porch in air dewetting air channel, to guide room air along air dewetting duct flows.
As detailed description of the invention, the concrete structure of dehumidifying unit is in water-cooled condenser 2, arrange the first refrigeration working medium passage and cooling-water duct, arranges the second refrigeration working medium passage, arrange the 3rd refrigeration working medium passage in surface cooler 5 in air-cooled condenser 3; In gas gas plate type heat exchanger 6, the first air channel arranged in a crossed manner and the second air channel are set.
Allow the liquid outlet of compressor 1 by the inlet of pipeline connecting tee control valve 7, a liquid outlet of three-way control valve 7 is allowed to connect the inlet of the first refrigeration working medium passage in water-cooled condenser 2 by pipeline, the liquid outlet of the first refrigeration working medium passage in water-cooled condenser 2 is allowed to be connected the inlet of expansion valve 4 by pipeline, allow the liquid outlet of expansion valve 4 by the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler 5, the liquid outlet of the 3rd refrigeration working medium passage in surface cooler 5 is allowed to be connected the inlet of compressor 1 by pipeline, to form the first refrigeration working medium closed circuit.And allow another liquid outlet of three-way control valve 7 connect the inlet of the second refrigeration working medium passage in air-cooled condenser 3 by pipeline, the liquid outlet of the second refrigeration working medium passage in air-cooled condenser 3 is allowed to be connected the inlet of expansion valve 4 by pipeline, allow the inlet of expansion valve 4 by the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler 5, the liquid outlet of the 3rd refrigeration working medium passage in surface cooler 5 is allowed to be connected the inlet of compressor 1 by pipeline, to form the second refrigeration working medium closed circuit.Above vibrational power flow, can realize by three-way control valve 7 flow direction changing refrigeration working medium, and and then the operation of control the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit.
Meanwhile, the inlet of cooling-water duct in water-cooled condenser 2 and liquid outlet is allowed to be communicated with external refrigeration water lines respectively by pipeline and to form loop; To form the first cooling water circulation loop; Send into indoor to form air dewetting air channel after allowing room air flow through the second air channel in the first air channel in gas gas plate type heat exchanger 6, surface cooler 5, gas gas plate type heat exchanger 6, air-cooled condenser 3 successively again.
Above vibrational power flow, by the unlatching of control first refrigeration working medium closed circuit processed, the second refrigeration working medium closed circuit and the first cooling water circulation loop or close down, under dehumidifying unit of the present invention just can be made to be operated in different patterns.Be specially: when there is people normal condition indoor, by closing down the second refrigeration working medium closed circuit, and open the first refrigeration working medium closed circuit and the first cooling water circulation loop, make work of the present invention in the normal mode, refrigeration working medium circular flow in the first refrigeration working medium closed circuit, on the one hand, refrigeration working medium absorbs heat at surface cooler 5 place and carries out heat exchange with the air flowed through, air themperature is reduced and realizes freeze drying object, on the other hand, refrigeration working medium is in water-cooled condenser 2 place's release heat and carry out heat exchange with the first cooling water circulation loop, by the first cooling water circulation loop, heat is passed, air temperature control in suitable scope, in the normal mode, owing to having closed down the second refrigeration working medium closed circuit, air-cooled condenser 3 is inoperative.When situation vacation indoor are unmanned, do not need to carry out cooling process to air, by opening the second refrigeration working medium closed circuit, and close down the first refrigeration working medium closed circuit and the first cooling water circulation loop, make work of the present invention in the power save mode, refrigeration working medium circular flow in the second refrigeration working medium closed circuit, on the one hand, refrigeration working medium absorbs heat at surface cooler 5 place and carries out heat exchange with the air flowed through, and air themperature is reduced and realizes freeze drying object; On the other hand, refrigeration working medium is in air-cooled condenser 3 place's release heat and carry out heat exchange with the air flowed through, and air themperature is raised, owing to having closed down the first refrigeration working medium closed circuit and corresponding first cooling water circulation loop, greatly can reduce energy consumption, realize energy-conservation object.Simultaneously, the present invention is by arranging gas gas plate type heat exchanger 6, and make room air flow through the first air channel in gas gas plate type heat exchanger 6 successively, surface cooler 5, the second air channel in gas gas plate type heat exchanger 6, indoor are sent into again after air-cooled condenser 3, in the process, air flows through the board-like parallel operation 6 of gas gas for twice, flow through the air after surface cooler 5, can carry out heat exchange with refrigeration working medium makes temperature reduce, when it flows through the second air channel in gas gas plate type heat exchanger 6, heat exchange can be carried out as low-temperature receiver and the air just entering the first air channel in gas plate type heat exchanger 6, precooling treatment is carried out to the air just entering the first air channel in gas gas plate type heat exchanger 6, and therefore himself temperature raises, the situation that temperature is too low can be avoided.This structural design, not only can make full use of the cold energy of cold air, realize recycling of the energy, reduce energy consumption, and the air themperature flowing through the first air channel can be made to reach relative equilibrium with the air themperature flowing through the second air channel, thus strengthen the stability of dehumidification system.
It should be noted that, first refrigeration working medium closed circuit of above annexation and the second refrigeration working medium closed circuit, structure can be simplified, reduce the volume of dehumidifying unit, and correspondingly reduce costs, but its annexation is not limited to enumerate mode above, two inlets and two liquid outlets can also be set on compressor 1, be connected with water-cooled condenser 2 and air-cooled condenser 3 respectively by pipeline, and be connected expansion valve 4 and surface cooler 5 form the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit, in practical application, by controlling being communicated with or closedown of different inlet and liquid outlet on compressor 1, realize unlatching or the closedown of control first refrigeration working medium closed circuit or the second refrigeration working medium closed circuit, can realize object of the present invention equally.
As prioritization scheme, in this detailed description of the invention, the pipeline in water-cooled condenser 2 between the liquid outlet of the first refrigeration working medium passage and the inlet of expansion valve 4 is provided with the first check valve 8; Pipeline in air-cooled condenser 3 between the liquid outlet of the second refrigeration working medium passage and the inlet connecing expansion valve 4 is provided with the second check valve 9.The object arranging the first check valve 8 and the second check valve 9 is mainly to control the flow direction of refrigeration working medium in the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit, avoids unnecessary energy loss, thus raises the efficiency.It should be noted that, first check valve 8 and the second check valve 9 are also inessential, if do not arranged the first check valve 8 and the second check valve 9, also can realize controlling the flow direction of refrigeration working medium in the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit by three-way control valve 7, but refrigeration working medium can flow into unnecessary path and carry out heat exchange, cause energy loss, affect efficiency.
As prioritization scheme, in this detailed description of the invention, the front end being also in gas gas plate type heat exchanger 6 in air dewetting air channel is provided with coiled pipe cooler 10, and allows the inlet of coiled pipe cooler 10 be communicated with formation second cooling water circulation loop by pipeline with outside cold water with liquid outlet.By arranging coiled pipe cooler 10 and the second cooling water circulation loop, the cooling water in the air of flowing pipe cooler 10 and the second cooling water circulation loop is made to carry out heat exchange, cooling processing is carried out to air, thus further increases freeze drying ability of the present invention and effect on moisture extraction.
It is to be noted, the present invention is provided with electric control unit (not shown), by electric control unit, the electric distribution of parts each in dehumidification system and operational factor controlled and regulated, automatic management degree can be improved, ensureing the stability of unit operation.In the present invention, electric control unit mainly comprises the devices such as detecting sensor, actuator, DDC or PLC single-chip microcomputer.
As the dehumanization method that precooling energy-saving dehumidifying system is corresponding, under there is people's situation normal condition indoor, runs in the normal mode, specifically comprise the following steps:
(1) the second refrigeration working medium closed circuit is closed down, open the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the first refrigeration working medium closed circuit, make cooling water circular flow in the first cooling water circulation loop;
(2) open blower fan, after guiding room air to flow through the second air channel in the first air channel in gas gas plate type heat exchanger 6, surface cooler 5, gas gas plate type heat exchanger 6, air-cooled condenser 3 successively, send into indoor again;
(3) make refrigeration working medium in water-cooled condenser 2 place's release heat and carry out heat exchange with cooling water, making refrigeration working medium absorb heat at surface cooler 5 place and carry out heat exchange with air.
When being provided with coiled pipe cooler 10, also the second cooling water circulation loop should be opened in above-mentioned steps (1), in above-mentioned steps (2), before first air channel that room air should be allowed to flow through in gas gas plate type heat exchanger 6, first flow through coiled pipe cooler 10 and carry out heat exchange with the cooling water in the second cooling water circulation loop.
As the dehumanization method that precooling energy-saving dehumidifying system is corresponding, in the indoor unmanned situation of situation vacation, run with energy saver mode, specifically comprise the following steps:
(1) open the second refrigeration working medium closed circuit, close down the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the second refrigeration working medium closed circuit;
(2) open blower fan, after guiding room air to flow through the second air channel in the first air channel in gas gas plate type heat exchanger 6, surface cooler 5, gas gas plate type heat exchanger 6, air-cooled condenser 3 successively, send into indoor again;
(3) make refrigeration working medium in air-cooled condenser 3 place's release heat and carry out heat exchange with air, making refrigeration working medium absorb heat at surface cooler 5 place and carry out heat exchange with air.
When being provided with coiled pipe cooler 10, also the second cooling water circulation loop should be closed down in above-mentioned steps (1), in above-mentioned steps (2), before first air channel that room air should be allowed to flow through in gas gas plate type heat exchanger 6, first flow through coiled pipe cooler 10 and carry out heat exchange with the cooling water in the second cooling water circulation loop.
Above embodiment is only the description carried out the preferred embodiment of the present invention; the restriction not request protection domain of the present invention carried out; under not departing from the present invention and designing the prerequisite of spirit; the various forms of distortion that this area engineers and technicians make according to technical scheme of the present invention, all should fall in protection domain that claims of the present invention determine.
Claims (9)
1. a precooling energy-saving dehumidifying system, comprise housing and be arranged at the dehumidifying unit in housing, it is characterized in that: described dehumidifying unit is provided with compressor (1), water-cooled condenser (2), air-cooled condenser (3), expansion valve (4), the gentle gas plate type heat exchanger (6) of surface cooler (5); Compressor (1), water-cooled condenser (2), between expansion valve (4) and surface cooler (5), be provided with the first refrigeration working medium closed circuit, compressor (1), air-cooled condenser (3), be provided with the second refrigeration working medium closed circuit between expansion valve (4) and surface cooler (5), the first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit alternate run under normal mode and energy saver mode; The first cooling water circulation loop is provided with between water-cooled condenser (2) and external refrigeration water system; Room air is sent into indoor path again and is provided with air dewetting air channel after flowing through gas gas plate type heat exchanger (6), surface cooler (5), gas gas plate type heat exchanger (6), air-cooled condenser (3) successively, the porch in described air dewetting air channel is provided with blower fan.
2. according to a kind of precooling energy-saving dehumidifying system according to claim 1, it is characterized in that: in described water-cooled condenser (2), be provided with the first refrigeration working medium passage and cooling-water duct, be provided with the second refrigeration working medium passage in air-cooled condenser (3), in surface cooler (5), be provided with the 3rd refrigeration working medium passage; The first air channel arranged in a crossed manner and the second air channel is provided with in gas gas plate type heat exchanger (6); Flow to by arranging three-way control valve (7) conversion refrigeration working medium between described first refrigeration working medium closed circuit and the second refrigeration working medium closed circuit;
Described first refrigeration working medium closed circuit is, the liquid outlet of compressor (1) passes through the inlet of pipeline connecting tee control valve (7), a liquid outlet of three-way control valve (7) connects the inlet of the first refrigeration working medium passage in water-cooled condenser (2) by pipeline, in water-cooled condenser (2), the liquid outlet of the first refrigeration working medium passage connects the inlet of expansion valve (4) by pipeline, the liquid outlet of expansion valve (4) passes through the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler (5), in surface cooler (5), the liquid outlet of the 3rd refrigeration working medium passage connects the inlet of compressor (1) by pipeline,
Described second refrigeration working medium closed circuit is, the liquid outlet of compressor (1) passes through the inlet of pipeline connecting tee control valve (7), another liquid outlet of three-way control valve (7) connects the inlet of the second refrigeration working medium passage in air-cooled condenser (3) by pipeline, in air-cooled condenser (3), the liquid outlet of the second refrigeration working medium passage connects the inlet of expansion valve (4) by pipeline, the inlet of expansion valve (4) passes through the inlet of the 3rd refrigeration working medium passage in pipeline connection table cooler (5), in surface cooler (5), the liquid outlet of the 3rd refrigeration working medium passage connects the inlet of compressor (1) by pipeline,
Described first cooling water circulation loop is, inlet and the liquid outlet of cooling-water duct to be communicated with external refrigeration water lines respectively by pipeline and to form loop in water-cooled condenser (2);
Described air dewetting air channel is, room air sends into indoor passage after flowing through the second air channel in the first air channel in gas gas plate type heat exchanger (6), surface cooler (5), gas gas plate type heat exchanger (6), air-cooled condenser (3) successively again.
3. according to a kind of precooling energy-saving dehumidifying system according to claim 2, it is characterized in that: the pipeline in described water-cooled condenser (2) between the liquid outlet of the first refrigeration working medium passage and the inlet of expansion valve (4) is provided with the first check valve (8); Pipeline in described air-cooled condenser (3) between the liquid outlet of the second refrigeration working medium passage and the inlet connecing expansion valve (4) is provided with the second check valve (9).
4. according to a kind of precooling energy-saving dehumidifying system according to claim 3, it is characterized in that: the front end being in gas gas plate type heat exchanger (6) in described air dewetting air channel is also provided with coiled pipe cooler (10), is provided with the second cooling water circulation loop between described coiled pipe cooler (10) and external refrigeration water system.
5. according to a kind of precooling energy-saving dehumidifying system described in any one of claim 1-4, it is characterized in that: also comprise electric control unit, electric control unit is used for controlling the electric distribution of parts each in unit and operational factor.
6., according to a dehumanization method for precooling energy-saving dehumidifying system described in claim 5, it is characterized in that: comprise the following steps:
(1) under there is people's situation normal condition indoor, close down the second refrigeration working medium closed circuit, open the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the first refrigeration working medium closed circuit, make cooling water circular flow in the first cooling water circulation loop;
(2) open blower fan, guide that room air flows through the second air channel in the first air channel in gas gas plate type heat exchanger (6), surface cooler (5), gas gas plate type heat exchanger (6) successively, air-cooled condenser sends into indoor after (3) again;
(3) make refrigeration working medium in water-cooled condenser (2) place's release heat and carry out heat exchange with cooling water, making refrigeration working medium absorb heat at surface cooler (5) place and carry out heat exchange with air.
7. according to the dehumanization method of precooling energy-saving dehumidifying system described in claim 6, it is characterized in that: when being provided with coiled pipe cooler (10), also the second cooling water circulation loop should be opened in above-mentioned steps (1), in above-mentioned steps (2), before the first air channel allowing room air flow through in gas gas plate type heat exchanger (6), first flow through coiled pipe cooler (10).
8., according to a dehumanization method for precooling energy-saving dehumidifying system described in claim 5, it is characterized in that: comprise the following steps:
(1), in the indoor unmanned situation of situation vacation, open the second refrigeration working medium closed circuit, close down the first refrigeration working medium closed circuit and the first cooling water circulation loop, make refrigeration working medium circular flow in the second refrigeration working medium closed circuit;
(2) open blower fan, guide that room air flows through the second air channel in the first air channel in gas gas plate type heat exchanger (6), surface cooler (5), gas gas plate type heat exchanger (6) successively, air-cooled condenser sends into indoor after (3) again;
(3) make refrigeration working medium in air-cooled condenser (3) place's release heat and carry out heat exchange with air, making refrigeration working medium absorb heat at surface cooler (5) place and carry out heat exchange with air.
9. according to the dehumanization method of precooling energy-saving dehumidifying system described in claim 8, it is characterized in that: when being provided with coiled pipe cooler (10), also the second cooling water circulation loop should be closed down in above-mentioned steps (1), in above-mentioned steps (2), before the first air channel allowing room air flow through in gas gas plate type heat exchanger (6), first flow through coiled pipe cooler (10).
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