CN210832353U - Energy-saving temperature and humidity control device with variable air volume - Google Patents
Energy-saving temperature and humidity control device with variable air volume Download PDFInfo
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- CN210832353U CN210832353U CN201921360821.0U CN201921360821U CN210832353U CN 210832353 U CN210832353 U CN 210832353U CN 201921360821 U CN201921360821 U CN 201921360821U CN 210832353 U CN210832353 U CN 210832353U
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Abstract
The utility model relates to an air conditioning equipment technical field, in time for solving temperature and humidity control is not accurate, and the not enough energy-conserving problem of control process, provide a changeable amount of wind energy-conserving type temperature and humidity control device, include the first temperature and humidity detection device to indoor temperature and humidity detection, to the second temperature and humidity detection device who gets into the temperature and humidity detection of indoor outdoor wind, will get into the diverging device that indoor outdoor wind falls into first branch wind and second branch wind, dehumidify the circulation governing system who adjusts the temperature with first branch wind, send into the second branch wind indoor nozzle device who mixes with the first branch wind after handling, and the central control system who is connected with their electricity. Compared with the prior art, its beneficial effect lies in: the utility model provides a pair of energy-conserving type temperature and humidity control device of changeable amount of wind has the function of effectively realizing the dehumidification that adjusts the temperature, and the accommodation process is accurate, and utilizes the heat of condensation energy-conserving energy, and with the indoor humiture of second branch road wind mixed control, effectively reduces the energy consumption.
Description
Technical Field
The utility model relates to an air conditioning equipment technical field, more specifically relates to a multivariable energy-saving type temperature and humidity independent control device and air supply method thereof.
Background
The air-conditioning products of the prior air-conditioner which can realize temperature and humidity control generally comprise the following two types: constant temperature and humidity air conditioner, temperature regulating dehumidifier.
The constant temperature and humidity machine adopts one or more constant volume compressors, controls the temperature or the humidity of a room by starting and stopping the compressors, can not control the temperature and the humidity simultaneously because the compressors can not control the temperature and the humidity simultaneously, only can one of indexes be preferentially adopted, and causes that the temperature and humidity precision is not high.
In temperature-adjusting dehumidification, the dehumidifier controls the start and stop of the compressor by relative humidity, the compressor stops running after the set humidity is reached, the temperature control of the temperature-adjusting dehumidifier is controlled by adjusting the condensation heat of the reheating condenser, the compressor does not have the condensation heat after the compressor stops running, namely the temperature rise of the supplied air does not exist, and the temperature of a room cannot be stabilized at the moment.
More importantly, for some occasions such as rooms, when the heat and humidity load is large, the condition of variable working conditions such as fresh air and the like needs to be introduced, particularly, the underground engineering with limited use occasions and no water source is adopted, and the common air conditioner has obvious inadaptability.
In order to improve the adaptability of the air conditioner and achieve the purpose of energy conservation, the air conditioner adopting variable air volume control is available at present, namely the temperature and humidity in a room are controlled by introducing fresh air into the room, but the control method is relatively complex, and the achievable effect is also poor, such as: chinese patent CN201210239255.4 discloses a temperature and humidity control device and method for variable air volume air conditioning system, which adjusts indoor temperature and humidity by introducing mixed post-treatment of outdoor fresh air and indoor circulating air, and this way reduces energy consumption to a certain extent, and the mixed state of fresh air and circulating air at every turn can be changed, and needs to be adjusted by multiple cycles to meet the requirement, and cannot realize the adjustment of indoor temperature and humidity in time, therefore, cannot satisfy the high-precision situation of temperature and humidity control, such as: precision machine processing industry, medicinal food industry, textile industry, tobacco industry, etc.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at overcoming at least one kind defect among the above-mentioned prior art, provide an energy-conserving type temperature and humidity control device of changeable amount of wind for solve the temperature and humidity control accurate in time, and the not enough energy-conserving problem of whole process.
The utility model adopts the technical proposal that:
a variable air volume energy-saving temperature and humidity control device comprises a first temperature and humidity detection device for detecting indoor temperature and humidity, a second temperature and humidity detection device for detecting the temperature and humidity of outdoor air entering the room, a shunting device for dividing the outdoor air entering the room into first branch air and second branch air, a circulating regulation system for dehumidifying and regulating the temperature of the first branch air, a nozzle device for feeding the second branch air into the room to be mixed with the processed first branch air, and a central control system electrically connected with the first branch air and the second branch air; the circulation regulating system comprises a compressor, a condenser, an expansion valve and an evaporator which form a refrigeration cycle process, wherein the evaporator enables a first branch to be cooled and dehumidified, and the condenser enables the first branch to be heated and warmed after cooling and dehumidification. Additionally, the utility model provides a pair of changeable amount of wind energy-saving type temperature and humidity control device still includes and sends into indoor forced draught blower with the first branch wind after handling. The central control system is in fact a simple micro control unit.
The utility model discloses an introduce outdoor wind and fall into two the tunnel with it, adopt circulation adjusting device to adjust first branch wind and handle, second branch wind gets into indoor and the mixed mode that reaches the humiture in the regulation room of first branch wind, can be according to indoor current humiture, and the humiture situation of the outdoor wind of introduction, the proportion of the first branch wind of regulation control and second branch wind, and to first branch wind regulation degree, directly realize the control of indoor humiture, and to first branch wind processing procedure, at first through the evaporimeter to its cooling dehumidification, then adopt the condensation heat that the condenser emitted heats up to its, finally reach the function of temperature regulation dehumidification, accommodation process is accurate, and utilize the condensation heat energy-saving energy, with second branch wind mixed regulation indoor, effectively reduce the energy consumption.
It should be noted that, because there are more devices that are used for air to add humidity alone in the market at present, and the effect is better, therefore, the utility model discloses well mainly used solves indoor environment dehumidification and temperature regulation's problem, so do not set up the device that is used for increasing indoor humidity among the changeable amount of wind energy-saving type temperature and humidity control device.
Further, the energy-saving temperature and humidity control device with variable air volume further comprises a water circulation system for adjusting the temperature and the humidity of the first branch air, the water circulation system is electrically connected with the central control system, and the water circulation system comprises a surface cooling coil pipe for cooling and dehumidifying the first branch air, a water pump for circulating water and a heating coil pipe for heating the first branch air after cooling and dehumidifying. Specifically, still be equipped with first water filter, relief valve, hydrologic cycle stop valve and expansion drum between table cold coil and the heating coil, water circulating system still includes automatic water supply device and automatic drainage device, automatic water supply device includes second water filter, hand valve and automatic water supply valve, automatic drainage device includes the drain valve.
The first branch wind enters the surface cooling coil of the water circulation system to be precooled and cooled, the water side of the heating coil of the water circulation system absorbs heat to heat, the water resistance of the water in the water circulation system is overcome by the water pump, the water reaches the heating coil of the water circulation system through the first water filter, the safety valve, the water circulation stop valve and the expansion tank, the air is heated and recovered by the drain valve arranged in the water circulation system and the automatic water replenishing valve, the hand valve and the second water filter, and then the air returns to the surface cooling coil of the water circulation system, the exhaust valve is arranged at the top of the whole system, and the system is provided with the automatic water replenishing device and the automatic water draining device.
The utility model discloses in, water circulating system have with the similar function of circulation governing system is earlier to first branch wind cooling dehumidification, then heats up to the first branch wind after cooling dehumidification, water circulating system can the exclusive use for the little condition of temperature and humidity control range also can use side by side with circulation governing system, so, it is adjacent with the evaporimeter to become cold coil, carries out two steps of cooling dehumidification to first branch wind, heating coil and condenser are side by side, heats up to two steps of heating of first branch wind after cooling dehumidification. When the water circulation system and the circulation adjusting system are used in parallel, first branch air enters the energy-saving variable air volume temperature and humidity control device from the outside, is precooled, cooled and dehumidified by the surface cooling coil, is deeply cooled and dehumidified by the evaporator, enters the heating coil for heating and warming, and finally enters the condenser for heating and warming to meet the adjusting requirement; on the other hand, the water circulation system is adopted to reinforce the adjusting function of the circulation adjusting system, so that the energy consumption of the circulation adjusting system is reduced, and the energy-saving effect is achieved.
Furthermore, the variable air volume energy-saving type temperature and humidity control device further comprises an electric heater connected with the evaporator and/or the heating coil, and the heater is electrically connected with the central control device. The utility model discloses a set up electric heater, when heating coil and evaporimeter heating ability to first branch wind were not enough or when unable the use, come further heating and heat up through electric heater to ensure that the first branch wind after handling can reach qualified state, and then make indoor humiture obtain controlling more accurately.
Further, the condenser includes air-cooled condenser and water-cooled condenser, water-cooled condenser is used for making the refrigerant that comes out from the compressor carry out preliminary heat absorption cooling, air-cooled condenser is used for making the first branch wind of the condensation heat heating of giving out. It should be noted that, if only one condenser is provided in the utility model, the first branch wind heating and warming wind cooling condenser can be directly adopted; the water cooled condenser can adopt the setting to replace at outdoor air cooled condenser, the utility model discloses in set up the water cooled condenser and carry out the cooling in advance to the high temperature high pressure liquid that gets into air cooled condenser to the realization can realize infinitely variable control to first branch wind cooling fan amount of wind.
Furthermore, a first preheating channel is arranged between the outlet of the compressor and the outlet of the expansion valve, the first channel comprises a first stop valve for adjusting on-off and a first regulating valve for adjusting opening degree, and the first stop valve and the first regulating valve are electrically connected with the central control system. Specifically, the first regulating valve adopts an electromagnetic valve, in the utility model, the outlet of the compressor can be connected to the outlet of the expansion valve, the electromagnetic valve and the first stop valve are arranged in the middle, the refrigerant in a high-temperature and high-pressure liquid state coming out of the compressor can be mixed with the normal-temperature and low-pressure liquid coming out of the expansion valve by opening the electromagnetic valve, the refrigerant which is about to enter the evaporator is preheated and heated, the heat released by the evaporation of the refrigerant in the evaporator is reduced, and the degree of cooling and dehumidifying of the first branch air by the evaporator is reduced; through the aperture that changes the solenoid valve, the proportion that the control mixes, the degree that the refrigerant that adjusts and get into the evaporimeter preheats and heaies up, thereby control the evaporimeter is to the degree of first branch wind cooling dehumidification, makes the utility model provides a temperature and humidity control adjusts more comprehensively and accurately.
Furthermore, a second preheating channel is arranged between the outlet of the water-cooled condenser and the inlet of the expansion valve, the second preheating channel comprises a second regulating valve used for regulating the opening degree, and the second regulating valve is electrically connected with the central control system. Specifically, the second governing valve adopts the solenoid valve, the utility model discloses in, set up the second between water cooled condenser export and the expansion valve import and preheat the passageway, make the process the refrigerant of the relative low high temperature high pressure liquid that comes out from the compressor after water cooled condenser preheats tentatively mixes with the normal atmospheric temperature liquid that is about to get into the expansion valve, adjusts the temperature that the refrigerant got into the evaporimeter, further control the evaporimeter is to the degree of first branch wind cooling dehumidification, makes the utility model provides a atmospheric control realizes infinitely variable control.
Further, a gas-liquid separator is arranged between the evaporator and the compressor, and the gas-liquid separator is used for filtering out liquid refrigerant coming out of the evaporator. Specifically, because the power of evaporimeter, and operating condition's influence follows the refrigerant that the evaporimeter came out can not reach gaseous state completely set up vapour and liquid separator between evaporimeter and the compressor for the refrigerant that gets into the compressor is gaseous state completely, ensures going on smoothly of circulation governing system.
Further, the energy-saving variable air volume temperature and humidity control device further comprises an air filter screen arranged in front of the flow dividing device, and the air filter device is used for filtering impurities in outdoor air and avoiding damage to the energy-saving variable air volume temperature and humidity control device.
Further, the energy-saving temperature and humidity control device of changeable amount of wind still includes the pressure balance device who is connected with central control system electricity, pressure balance device include with first pressure controller, second pressure controller and the two-way valve of setting at the water-cooled condenser export are connected to the compressor electricity, the setting value of first pressure controller is water-cooled condensing pressure and allows the lower limit, the setting value of second pressure controller is water-cooled condensing pressure and allows the upper limit, first pressure controller and second pressure controller are used for through control the pressure of two-way valve aperture governing system. The utility model discloses, in order to realize the circulation governing system, especially the pressure stability of compressor position, set up with the pressure balance device that the central control system electricity is connected.
Specifically, the pressure balancing device in the present invention comprises two pressure controllers and a two-way water valve, the setting values of the pressure controllers are respectively the upper limit value and the lower limit value of the condensing pressure, when the condensing pressure is at the upper limit value of the condensing pressure, the two pressure controllers simultaneously feed back two "on" signals or two "off" signals to control the water valve, and the small water valve is closed; when the condensing pressure is between the upper limit value and the lower limit value of the pressure allowance, the two pressure controllers simultaneously feed back an on signal and an off signal to control the water valve, and the water valve is stable; when the condensing pressure is at the lower limit of the pressure allowable value, the two pressure controllers simultaneously feed back two 'off' signals or two 'on' signals to control the water valve, and open the large water valve to keep the system pressure stable.
Further, the nozzle device comprises a plurality of nozzles and an automatic switch cantilever device arranged on the nozzles, the automatic switch cantilever device is used for opening or closing the nozzles to adjust the air volume of the second branch air, and the automatic switch cantilever device is electrically connected with the central control system. In order to realize the energy-saving control of changeable amount of wind, the utility model discloses an introduce outdoor wind and fall into two the tunnel with it, adopt circulation adjusting device to adjust first branch wind and handle, second branch wind gets into indoor and the mode that first branch wind mixes and reaches the humiture in the regulation room, can be according to indoor current humiture, and the humiture situation of the outdoor wind of introducing, the proportion of the first branch wind of regulation control and second branch wind, and to first branch wind regulation degree, directly realize the control of indoor humiture, wherein mainly adopt the quantity control of opening the nozzle to the amount of wind control of second branch wind. The utility model discloses, through adopting a plurality of nozzles and setting up the automatic switch cantilever device on the nozzle, realize the amount of wind control of second branch road wind.
Specifically, outdoor wind gets into the utility model provides a behind the device, partly amount of wind is through water circulation system and/or circulation governing system, and partly amount of wind is through the inside nozzle device who sets up a plurality of nozzles in addition, and nozzle quantity is according to air regulation, and the nozzle sets up automatic switch cantilever device, and cantilever device includes that rotating electrical machines or air pressure device are rotatory, opens the nozzle or closes the nozzle automatically, according to the in service behavior, and the automatic selection nozzle quantity calculates the bypass amount of wind.
In the actual working process: according to the change of seasons, when the environmental temperature is high, the nozzle device is closed, and the cooling system is cooled; when the environment temperature is low temperature and high humidity, according to the dehumidification quantity requirement, simultaneously acquiring an air inlet parameter and an air outlet absolute moisture content parameter required by calculation, and further automatically selecting the number of the opened nozzles to achieve the effect of saving most energy; when the environmental temperature is low and the absolute moisture content of the room is achieved, different fresh air volumes are selected according to the in-and-out conditions of field personnel or the requirements of equipment, and partial nozzles are automatically closed to achieve the minimum fresh air volume meeting the requirements.
Further, the nozzle device may employ a perforated plate.
Specifically, the air supply method of the variable air volume energy-saving type temperature and humidity control device comprises the following steps;
s1, detecting the indoor current temperature T0 and humidity RH0, the outdoor wind temperature T1 and humidity RH1, and judging the condition needing to be adjusted according to the standard temperature T and humidity RH: if the temperature is higher, i.e. T0> T, go to step S2; if the temperature is lower and the humidity is higher, i.e. T0< T, go to step S3;
s2, closing the nozzle device, and reducing the indoor temperature by adopting the circulation adjusting system;
s3, obtaining the required air volume V1 of the first branch air, the air volume V2 of the second branch air and the temperature T2 and the humidity RH2 which the circulation adjusting system needs to adjust the first branch air to reach according to the dehumidification requirement;
s4, adjusting the number of the opened nozzles by the nozzle device according to the air volume V2 requirement of the second branch air;
s5, the evaporator cools and dehumidifies a first branch air to be entered into a room, and then the condenser heats a second branch air after cooling and dehumidification to reach the temperature T2 and the humidity RH2 required by the first branch air;
and S6, introducing first branch air with the air volume of V1, the temperature and humidity of T2 and RH2 respectively and second branch air with the air volume of V2 and the temperature and humidity of T1 and RH1 respectively into a room, and mixing to ensure that the indoor temperature and humidity reach standard values T and RH respectively.
Specifically, in step S3, when the temperature is relatively low and the absolute humidity is qualified, a part of the nozzle devices is opened to introduce the minimum amount of the second branch wind, and the second branch wind and the first branch wind are mixed and introduced into the room to adjust the indoor temperature and humidity.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses, through introducing outdoor wind and dividing into two the tunnel with it, adopt circulation adjusting device to adjust the processing with first branch wind, the second branch wind gets into indoor and mixes the mode that reaches the humiture in the regulation room with first branch wind, can be according to indoor current humiture, and the humiture situation of the outdoor wind of introducing, the proportion of regulation control first branch wind and second branch wind, and to first branch wind adjustment degree, directly realize the control of indoor humiture; the condensation heat emitted by the condenser is adopted to heat and raise the temperature of the air, the temperature adjusting and dehumidifying functions are finally achieved, the adjusting process is accurate, energy is saved by the condensation heat, the indoor temperature and humidity are adjusted by mixing with the second branch air, and the energy consumption is effectively reduced; the mode of combining the water circulation system and the circulation adjusting system is adopted, the adjusting effect is improved, the water circulation system is suitable for various working conditions, and the energy consumption is reduced; in addition, a heater is arranged, and the heater is adopted to heat the first branch air when necessary, so that unlimited and accurate control is realized; a first preheating channel and a second preheating channel are arranged in the circulation adjusting system, so that stepless adjustment of temperature and humidity control is realized; the pressure balancing device is arranged to ensure the pressure in the device to be stable, so that the device can safely operate; and the nozzle device comprises a plurality of nozzles and an automatic switch cantilever device arranged on the nozzles, so that the air volume of the second branch air can be controlled at will. To sum up, the utility model discloses it is accurate to have accommodation process, the energy saving, and the energy consumption is low, controls convenient beneficial lower effect.
Drawings
Fig. 1 is a schematic view of the working structure principle and the flow of the present invention.
Fig. 2 is a schematic view of the connection structure of the present invention.
Detailed Description
The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a variable air volume energy-saving type temperature and humidity control device, which includes a first temperature and humidity detection device for detecting indoor temperature and humidity, a second temperature and humidity detection device for detecting temperature and humidity of outdoor air entering into an indoor room, a flow dividing device for dividing the outdoor air entering into the indoor room into a first branch air and a second branch air, a circulation regulation system for dehumidifying and temperature regulating the first branch air, a nozzle device 22 for feeding the second branch air into the indoor room to be mixed with the processed first branch air, and a central control system 1 electrically connected to the first branch air and the second branch air; the circulation regulating system comprises a compressor 3, a condenser 4, an expansion valve 5 and an evaporator 6 which form a refrigeration cycle process, wherein the evaporator 6 cools and dehumidifies first branch air, and the condenser 4 heats and warms the first branch air after cooling and dehumidifying. Specifically, the utility model provides a pair of energy-saving temperature and humidity control device of changeable amount of wind still includes sends into indoor forced draught blower 30 with the first branch wind after handling.
The utility model discloses an introduce outdoor wind and fall into it two the tunnel, adopt circulation adjusting device to adjust first branch wind and handle, second branch wind gets into indoor and the mixed mode that reaches the humiture in the regulation room of first branch wind, can be according to indoor current humiture, and the humiture situation of the outdoor wind of introduction, the proportion of the first branch wind of regulation control and second branch wind, and to first branch wind regulation degree, directly realize the control of indoor humiture, and to first branch wind processing procedure, at first through 6 cooling dehumidifications of evaporimeter to it, then adopt the condensation heat that condenser 4 emitted heats up to it, finally reach the function of temperature regulation dehumidification, accommodation process is accurate, and utilize the condensation heat energy-saving energy, mix the regulation room with second branch wind, effectively reduce the energy consumption.
Further, the energy-saving temperature and humidity control device with variable air volume further comprises a water circulation system for adjusting the temperature and the humidity of the first branch air, the water circulation system is electrically connected with the central control system 1, the water circulation system comprises a surface cooling coil 7 for cooling and dehumidifying the first branch air, a water pump 29 for circulating water and a heating coil 8 for heating the first branch air after cooling and dehumidifying.
Specifically, still be equipped with first water filter 9, relief valve 10, hydrologic cycle stop valve 11 and expansion tank 12 between table cold coil 7 and the heating coil 8, hydrologic cycle system still includes automatic water supply device and automatic drainage device, automatic water supply device includes second water filter 13, hand valve 14 and automatic water supply valve 15, automatic drainage device includes drain valve 16.
In the operation process, the first branch wind enters the surface cooling coil 7 of the water circulation system to pre-cool and cool, absorbs heat from the water side of the heating coil 8 of the water circulation system to heat and warm, the water in the water circulation system overcomes water resistance through the water pump 29, reaches the heating coil 8 of the water circulation system through the first water filter 9, the safety valve 10, the water circulation stop valve 11 and the expansion tank 12, the air is heated and recycled through the drain valve 16 configured in the water circulation system and the automatic water replenishing valve 15, the hand valve 14 and the second water filter 13, and then returns to the surface cooling coil 7 of the water circulation system, the exhaust valve is arranged at the top of the whole system, and in addition, the system is provided with an automatic water replenishing device and an automatic water draining device.
The utility model discloses in, water circulating system have with the similar function of circulation governing system is earlier to first branch wind cooling dehumidification, then heats up to the first branch wind after cooling dehumidification, water circulating system can the exclusive use for the little condition of temperature and humidity control range also can use side by side with circulation governing system, so, it is adjacent with evaporimeter 6 to become cold coil, carries out two steps of cooling dehumidification to first branch wind, heating coil 8 stands by side with condenser 4, heats up to the two steps of heating of first branch wind after cooling dehumidification. When the water circulation system and the circulation adjusting system are used in parallel, first branch air enters the energy-saving variable air volume temperature and humidity control device from the outside, is precooled, cooled and dehumidified by the surface cooling coil 7, is deeply cooled and dehumidified by the evaporator 6, enters the heating coil 8 for heating and warming, and finally enters the condenser 4 for heating and warming to meet the adjusting requirement; on the other hand, the water circulation system is adopted to reinforce the adjusting function of the circulation adjusting system, so that the energy consumption of the circulation adjusting system is reduced, and the energy-saving effect is achieved.
Further, the variable air volume energy-saving type temperature and humidity control device further comprises an electric heater 17 connected with the evaporator 6 and/or the heating coil 8, and the heater is electrically connected with the central control device. The utility model discloses a set up electric heater 17, when heating coil 8 and evaporimeter 6 heating ability to first branch wind were not enough or when unable the use, come further heating and rise temperature through electric heater 17 to ensure that the first branch wind after handling can reach qualified state, and then make indoor humiture obtain controlling more accurately.
Further, the condenser 4 includes an air-cooled condenser 4 and a water-cooled condenser 18, the water-cooled condenser 18 is used for making the refrigerant coming out from the compressor 3 to primarily absorb heat and cool, and the air-cooled condenser 4 is used for making the released condensation heat to heat the first branch wind. It should be noted that, the utility model can also be provided with only one condenser 4, and when only one condenser 4 is arranged, the air-cooled condenser 4 capable of directly heating the first branch is adopted; in addition, the water-cooled condenser 18 may be replaced with an air-cooled condenser 4 disposed outdoors. In the embodiment, the water-cooled condenser 18 and the air-cooled condenser 4 are connected, wherein the water-cooled condenser 18 pre-cools the high-temperature and high-pressure liquid entering the air-cooled condenser 4, so that the air volume of the first branch air cooling fan can be steplessly adjusted.
Further, a first preheating channel is arranged between the outlet of the compressor 3 and the outlet of the expansion valve 5, the first channel comprises a first stop valve 19 for adjusting on-off and a first regulating valve 20 for adjusting opening degree, and the first stop valve 19 and the first regulating valve 20 are electrically connected with the central control system 1. Specifically, the first regulating valve 20 is an electromagnetic valve.
In the utility model, the outlet of the compressor 3 can be connected to the outlet of the expansion valve 5, the electromagnetic valve and the first stop valve 19 are arranged in the middle, the refrigerant in the high-temperature and high-pressure liquid state coming out from the compressor 3 can be mixed with the normal-temperature and low-pressure liquid coming out from the expansion valve 5 by opening the electromagnetic valve, the refrigerant which is about to enter the evaporator 6 is preheated and heated, the heat released by the evaporation of the refrigerant in the evaporator 6 is reduced, and the degree of cooling and dehumidification of the first branch air by the evaporator 6 is reduced; through the aperture that changes the solenoid valve, the proportion that the control mixes, the degree that the refrigerant that adjusts and get into evaporimeter 6 preheats and heaies up, thereby control evaporimeter 6 is to the degree of first branch wind cooling dehumidification, feasible the utility model provides a temperature and humidity control adjusts more comprehensively and accurately.
Further, a second preheating channel is arranged between the outlet of the water-cooled condenser 18 and the inlet of the expansion valve 5, the second preheating channel comprises a second regulating valve 21 for regulating the opening degree, and the second regulating valve 21 is electrically connected with the central control system 1. Specifically, the second regulating valve 21 is an electromagnetic valve.
The utility model discloses in, set up the second between the export of water cooled condenser 18 and the import of expansion valve 5 and preheat the passageway, make the process the refrigerant of the relative high temperature high pressure liquid that comes out from compressor 3 slightly low after 18 tentatively preheat of water cooled condenser mixes with the normal atmospheric temperature liquid that is about to get into expansion valve 5, adjusts the temperature that the refrigerant got into evaporimeter 6, further control evaporimeter 6 is to the degree of first branch wind cooling dehumidification, makes the utility model provides a temperature and humidity control realizes infinitely variable control.
Further, a gas-liquid separator 27 is disposed between the evaporator 6 and the compressor 3, and the gas-liquid separator 27 is used for filtering out the liquid refrigerant coming out of the evaporator 6. Specifically, because the power of evaporimeter 6, and operating condition's influence follows the refrigerant that evaporimeter 6 came out can not reach gaseous state completely the utility model discloses set up vapour and liquid separator 27 between evaporimeter 6 and the compressor 3 for the refrigerant that gets into compressor 3 is gaseous state completely, ensures going on smoothly of circulation governing system.
Further, the energy-saving variable air volume temperature and humidity control device further comprises an air filter screen 28 arranged before the flow dividing device, wherein the air filter device is used for filtering impurities in outdoor air and avoiding damage to the energy-saving variable air volume temperature and humidity control device.
Further, the polytropic air quantity energy-saving type temperature and humidity control device further comprises a pressure balancing device electrically connected with the central control system 1, the pressure balancing device comprises a first pressure controller 22, a second pressure controller 23 and a two-way valve 24 arranged at the outlet of the water-cooled condenser 18, the set value of the first pressure controller 22 is a water-cooled condensing pressure allowable lower limit, the set value of the second pressure controller 23 is a water-cooled condensing pressure allowable upper limit, and the first pressure controller 22 and the second pressure controller 23 are used for adjusting the pressure of the system by controlling the opening degree of the two-way valve 24. The utility model discloses, in order to realize the circulation governing system, especially the pressure stability of 3 positions of compressor, set up with the pressure balance device that the 1 electricity of central control system is connected.
In the utility model, the pressure balancing device comprises two pressure controllers and a two-way water valve, the setting values of the pressure controllers are respectively the upper limit value and the lower limit value allowed by the condensing pressure, when the condensing pressure is at the upper limit value allowed by the pressure, the two pressure controllers simultaneously feed back two 'on' signals or two 'off' signals to control the water valve, and the small water valve is closed; when the condensing pressure is between the upper limit value and the lower limit value of the pressure allowance, the two pressure controllers simultaneously feed back an on signal and an off signal to control the water valve, and the water valve is stable; when the condensing pressure is at the lower limit of the pressure allowable value, the two pressure controllers simultaneously feed back two 'off' signals or two 'on' signals to control the water valve, and open the large water valve to keep the system pressure stable.
Further, the nozzle device 22 includes a plurality of nozzles 25 and an automatic opening and closing arm device 26 disposed on the nozzles 25, the automatic opening and closing arm device 26 is used for opening or closing the nozzles 25 to adjust the volume of the second branch wind, and the automatic opening and closing arm device 26 is electrically connected to the central control system 1. The utility model discloses an adopt a plurality of nozzles 25 and the automatic switch cantilever means 26 of setting on nozzle 25, realize the amount of wind control of second branch road wind.
Specifically, outdoor wind gets into the utility model provides a behind the device, partly amount of wind is through water circulation system and/or circulation governing system, and partly amount of wind is through the inside nozzle device 22 that sets up a plurality of nozzles 25 in addition, and nozzle 25 quantity is according to air regulation, and nozzle 25 sets up automatic switch cantilever device 26, and cantilever device 26 includes that rotating electrical machines or air pressure device are rotatory, opens nozzle 25 or closes nozzle 25 automatically, according to the applied condition, and the bypass amount of wind is calculated to automatic selection nozzle 25 quantity.
In the actual working process: according to the change of the whole year, when the environmental temperature is high, the nozzle device 22 is closed, and the cooling system is cooled; when the environment temperature is low temperature and high humidity, according to the dehumidification quantity requirement, simultaneously acquiring an air inlet parameter and an air outlet absolute moisture content parameter required by calculation, and further automatically selecting the number of the opened nozzles 25 so as to achieve the effect of saving most energy; when the environmental temperature is low and the absolute moisture content of the room is reached, different fresh air volumes are selected according to the in-and-out conditions of field personnel or the requirements of equipment, and partial nozzles 25 are automatically closed to reach the minimum fresh air volume meeting the requirements.
Further, the nozzle device 22 may employ a perforated plate.
An air supply method of a variable air volume energy-saving temperature and humidity control device is characterized by comprising the following steps;
s1, detecting the indoor current temperature T0 and humidity RH0, the outdoor wind temperature T1 and humidity RH1, and judging the condition needing to be adjusted according to the standard temperature T and humidity RH: if the temperature is higher, i.e. T0> T, go to step S2; if the temperature is lower and the humidity is higher, i.e. T0< T, go to step S3;
s2, closing the nozzle device 22, and reducing the indoor temperature by using the circulation adjusting system;
s3, obtaining the required air volume V1 of the first branch air, the air volume V2 of the second branch air and the temperature T2 and the humidity RH2 which the circulation adjusting system needs to adjust the first branch air to reach according to the dehumidification requirement;
s4, adjusting the number of the opened nozzles 25 by the nozzle device 22 according to the air volume V2 requirement of the second branch air;
s5, the evaporator 6 cools and dehumidifies the first branch air to be entered into the room, and then the condenser 4 heats the second branch air after cooling and dehumidification to reach the temperature T2 and the humidity RH2 required by the first branch air;
and S6, introducing first branch air with the air volume of V1, the temperature and humidity of T2 and RH2 respectively and second branch air with the air volume of V2 and the temperature and humidity of T1 and RH1 respectively into a room, and mixing to ensure that the indoor temperature and humidity reach standard values T and RH respectively.
Specifically, in step S3, when the temperature is relatively low and the absolute humidity is qualified, part of the nozzle devices 22 are opened to introduce the minimum amount of the second branch wind, and the second branch wind and the first branch wind are mixed and introduced into the room to adjust the indoor temperature and humidity.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (9)
1. A variable air volume energy-saving temperature and humidity control device is characterized by comprising a first temperature and humidity detection device for detecting indoor temperature and humidity, a second temperature and humidity detection device for detecting the temperature and humidity of outdoor air entering an indoor room, a flow dividing device for dividing the outdoor air entering the indoor room into first branch air and second branch air, a circulating regulation system for dehumidifying and regulating the temperature of the first branch air, a nozzle device for feeding the second branch air into the indoor room to be mixed with the first branch air after treatment, and a central control system electrically connected with the first temperature and humidity detection device and the nozzle device; the circulation regulating system comprises a compressor, a condenser, an expansion valve and an evaporator which form a refrigeration cycle process, wherein the evaporator enables a first branch to be cooled and dehumidified, and the condenser enables the first branch to be heated and warmed after cooling and dehumidification.
2. The variable air volume energy-saving type temperature and humidity control device according to claim 1, further comprising a water circulation system for first branch air temperature and humidity adjustment, wherein the water circulation system is electrically connected with the central control system and comprises a surface cooling coil pipe for cooling and dehumidifying the first branch air, a water pump for circulating water and a heating coil pipe for heating the first branch air after cooling and dehumidifying.
3. A variable air volume energy-saving type temperature and humidity control device according to claim 1 or 2, further comprising an electric heater connected with the evaporator and/or the heating coil, wherein the heater is electrically connected with the central control device.
4. The variable air volume energy-saving type temperature and humidity control device according to claim 1, wherein the condenser comprises an air-cooled condenser and a water-cooled condenser, the water-cooled condenser is used for primarily absorbing heat and cooling the refrigerant coming out of the compressor, and the air-cooled condenser is used for heating the first branch air by the released condensation heat.
5. The variable air volume energy-saving type temperature and humidity control device according to claim 1, wherein a first preheating channel is arranged between the outlet of the compressor and the outlet of the expansion valve, the first preheating channel comprises a first stop valve for adjusting on-off and a first regulating valve for adjusting opening degree, and the first stop valve and the first regulating valve are electrically connected with a central control system.
6. The variable air volume energy-saving type temperature and humidity control device according to claim 4, wherein a second preheating channel is arranged between the outlet of the water-cooled condenser and the inlet of the expansion valve, the second preheating channel comprises a second adjusting valve used for adjusting the opening degree, and the second adjusting valve is electrically connected with the central control system.
7. A polytropic air quantity energy-saving type temperature and humidity control device according to claim 1, 2, 4 or 5, further comprising a pressure balancing device electrically connected with a central control system, wherein the pressure balancing device comprises a first pressure controller, a second pressure controller and a two-way valve, the first pressure controller and the second pressure controller are electrically connected with the compressor, the two-way valve is arranged at the outlet of the water-cooled condenser, the set value of the first pressure controller is the lower allowable limit of the water-cooled condensing pressure, the set value of the second pressure controller is the upper allowable limit of the water-cooled condensing pressure, and the first pressure controller and the second pressure controller are used for adjusting the pressure of the system by controlling the opening degree of the two-way valve.
8. A variable air volume energy-saving type temperature and humidity control device according to claim 1, 2, 4 or 5, wherein the nozzle device comprises a plurality of nozzles and an automatic switch cantilever device arranged on the nozzles, the automatic switch cantilever device is used for opening or closing the nozzles to adjust the air volume of the second branch air, and the automatic switch cantilever device is electrically connected with the central control system.
9. The variable air volume energy-saving type temperature and humidity control device according to claim 1, wherein a gas-liquid separator is arranged between the evaporator and the compressor, and the gas-liquid separator is used for filtering out liquid refrigerant coming out of the evaporator.
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| CN110793133A (en) * | 2019-08-20 | 2020-02-14 | 广东申菱环境系统股份有限公司 | Energy-saving temperature and humidity control device with variable air volume and air supply mode thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110793133A (en) * | 2019-08-20 | 2020-02-14 | 广东申菱环境系统股份有限公司 | Energy-saving temperature and humidity control device with variable air volume and air supply mode thereof |
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