CN215892840U - Energy-saving dehumidifying refrigeration heat exchange device - Google Patents
Energy-saving dehumidifying refrigeration heat exchange device Download PDFInfo
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- CN215892840U CN215892840U CN201821297629.7U CN201821297629U CN215892840U CN 215892840 U CN215892840 U CN 215892840U CN 201821297629 U CN201821297629 U CN 201821297629U CN 215892840 U CN215892840 U CN 215892840U
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Abstract
The utility model discloses an energy-saving dehumidification refrigeration heat exchange device which comprises at least one refrigerant loop and an air channel, wherein the refrigerant loop comprises a compressor, a condenser, a supercooling reheating heat exchanger, a throttling device and an evaporator which are sequentially connected, the evaporator and the supercooling reheating heat exchanger are respectively positioned in the air channel, the evaporator is positioned at the position, close to an air inlet, of the air channel, the supercooling reheating heat exchanger is positioned at the position, close to an air outlet, of the air channel, the refrigeration heat exchange device further comprises a heat pipe loop, the heat pipe loop is positioned in the air channel, the heat pipe loop comprises the precooling heat exchanger and the reheating heat exchanger, the precooling heat exchanger is positioned in the air channel between the air inlet and the evaporator, and the reheating heat exchanger is positioned in the air channel between the evaporator and the supercooling reheating heat exchanger. The utility model has the advantages of energy saving, consumption reduction, simple system and small pipeline pressure drop.
Description
Technical Field
The utility model relates to the technical field of refrigeration and air conditioning equipment, in particular to an energy-saving dehumidification refrigeration heat exchange device.
Background
The refrigeration heat exchange device with the dehumidification function is widely applied to industries with higher requirements on temperature and humidity, such as electronics, machine tools, textiles, medicines and the like, wherein most of the refrigeration heat exchange devices adopt a condensation dehumidification method, namely, the air temperature is cooled to be below a dew point, moisture in the air is condensed out, the absolute humidity is reduced, the air is in a saturated state at the moment, and the air needs to be heated again, so that the relative humidity is reduced.
In the condensation process, when general air just enters an air treatment system, the temperature is high, the air needs to be pre-cooled to be close to the dew point temperature, then the temperature is further reduced, the temperature of the air after temperature reduction is low, the absolute moisture content of the air is not high at the moment, but the relative humidity is high (in a saturated state), in order to obtain a proper temperature and humidity level, the air needs to be heated, so that the relative humidity is obviously reduced under the condition that the absolute moisture content of the air is not changed, the pre-cooling and reheating processes of the conventional refrigeration heat exchange device all need to consume a large amount of external energy, the economy is poor, and the environment is not protected.
For most of the refrigeration and heat exchange devices, the condenser generally directly radiates heat to the environment, the condensation heat becomes waste heat, and in order to reduce energy consumption, some refrigeration and heat exchange devices use the partial condensation heat to reheat the dehumidified air, for example, chinese patent with application number CN101865497A discloses a high-precision energy-saving constant-temperature and constant-humidity air conditioner, which installs a plurality of condensers with different heat exchange areas in the air duct behind the evaporator, and heats the air by using the heat released by the condensation of the compressed high-temperature gas, thereby saving reheating energy.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an energy-saving dehumidification refrigeration heat exchange device, which can heat air by using high-temperature liquid condensed by a refrigerant, and has the advantages of small pressure drop of pipelines and simple system.
In order to solve the technical problem, the utility model provides an energy-saving dehumidification refrigeration heat exchange device, which comprises at least one refrigerant loop and an air duct, wherein the refrigerant loop comprises a compressor, a condenser, a supercooling reheating heat exchanger, a throttling device and an evaporator which are connected in sequence, the evaporator and the supercooling reheating heat exchanger are respectively positioned in the air duct, the evaporator is positioned at the position of the air duct close to the air inlet, the supercooling reheating heat exchanger is positioned at the position of the air duct close to the air outlet, the refrigerating and heat exchanging device also comprises a heat pipe loop, the heat pipe loop is positioned in the air duct and comprises a precooling heat exchanger and a reheating heat exchanger, the pre-cooling heat exchanger is positioned in an air channel between the air inlet and the evaporator, and the reheating heat exchanger is positioned in an air channel between the evaporator and the super-cooling reheating heat exchanger.
Furthermore, the heat pipe loop is U-shaped, two straight edges of the U-shaped heat pipe loop are composed of the precooling heat exchanger and the reheating heat exchanger, and the precooling heat exchanger and the reheating heat exchanger are communicated through an air pipe and a liquid pipe.
Optionally, the heat pipe loop is L-shaped, two straight edges of the L-shaped heat pipe loop are formed by the precooling heat exchanger and the reheating heat exchanger, and the precooling heat exchanger and the reheating heat exchanger are communicated through an air pipe and a liquid pipe.
Optionally, the heat pipe loop is of an I-type, the upper half part of the I-type heat pipe loop is the reheating heat exchanger, the lower half part of the I-type heat pipe loop is the precooling heat exchanger, and the precooling heat exchanger and the reheating heat exchanger are communicated through an air pipe and a liquid pipe.
Furthermore, the refrigerant circuit comprises a plurality of condensers (1) connected in parallel, and at least one condenser (1) is arranged in an air duct on one side of the supercooling reheating heat exchanger close to the air outlet.
The supercooling reheating heat exchanger in the refrigerant loops is arranged at the position, close to the air outlet, of the air channel in parallel, and the evaporators in the refrigerant loops are arranged at the position, close to the air inlet, of the air channel in parallel.
Optionally, the supercooling reheating heat exchanger and the evaporator are respectively provided with a plurality of pairs of inlet pipes and outlet pipes, and a plurality of refrigerant loops are formed by the plurality of pairs of inlet pipes and outlet pipes of the supercooling reheating heat exchanger and the evaporator.
Further, still include the surface cooler, the surface cooler is located in the wind channel between reheat heat exchanger and the air intake.
Furthermore, the refrigerant circuit further comprises a supercooling reheat flow adjusting device, and the supercooling reheat flow adjusting device is used for adjusting the flow of the refrigerant entering the supercooling reheat heat exchanger.
Further, the subcooling and reheating flow regulating device comprises at least one flow regulating valve, and the flow regulating valve is connected between the condenser and the subcooling and reheating heat exchanger and/or is connected between an inlet pipe and an outlet pipe of the subcooling and reheating heat exchanger in parallel.
The embodiment of the utility model has the following beneficial effects:
the heat pipe loop is arranged in the air duct, the precooling heat exchanger firstly cools and dehumidifies, the reheating heat exchanger reheats the cooled and dehumidified air to reach a certain air outlet temperature, and the precooling heat exchanger and the reheating heat exchanger are driven by temperature difference without consuming extra energy;
by arranging the supercooling reheating heat exchanger in the air duct, when the temperature of the air passing through the reheating heat exchanger still cannot reach the air outlet temperature, the supercooling reheating heat exchanger can further heat the air passing through the reheating heat exchanger to the air supply temperature without adding extra energy, and on the other hand, the refrigerant is supercooled, so that the refrigerating or heating efficiency of the refrigerating and heat exchanging device is improved;
the flow of the refrigerant of the supercooling reheating heat exchanger is adjusted through the supercooling reheating flow adjusting device, so that the function of accurately adjusting the air outlet temperature of the air outlet is realized;
by matching the heat pipe loop with the supercooling reheating heat exchanger, a smaller heat pipe heat exchanger can be selected to achieve the same energy-saving performance, so that the system cost is reduced;
the air outlet temperature is adjusted in a large temperature range by arranging the surface cooler in the air duct and using the surface cooler, the heat pipe loop, the supercooling reheating heat exchanger and the supercooling reheating flow adjusting device in a matching way;
the air outlet temperature is adjusted in a larger temperature range by additionally arranging a condenser behind the supercooling reheating heat exchanger and by matching the additionally arranged condenser, the surface air cooler, the heat pipe loop, the supercooling reheating heat exchanger and the supercooling reheating flow adjusting device;
a plurality of pairs of evaporators and supercooling reheat heat exchangers are arranged, or a plurality of pairs of inlet pipes and outlet pipes are respectively arranged on the evaporators and the supercooling reheat heat exchangers, so that a plurality of refrigeration systems can be formed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a three-way flow regulating valve in an energy-saving dehumidification refrigeration heat exchange device according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a plurality of regulating valves connected in parallel in the energy-saving dehumidification refrigeration heat exchange device according to the first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a regulating valve and a bypass pipe connected in parallel in the energy-saving dehumidification refrigeration heat exchange device according to the first embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a fifth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a refrigeration heat exchange device for energy saving and dehumidification according to a sixth embodiment of the present invention.
Wherein, the corresponding reference numbers in the figures are:
1-condenser 2-dry filter 3-reheat flow control valve
4-main path flow regulating valve 5-throttling device 6-gas-liquid separator
7-blower 8-four-way change valve 9-one-way valve
10-three-way flow regulating valve
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It should be apparent that the described embodiment is only one embodiment of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.
The utility model provides an energy-conserving dehumidification's refrigeration heat transfer device, includes refrigerant circuit, heat pipe loop, wind channel and fan 7, wherein, the refrigerant circuit is including the compressor, condenser 1, supercooling reheat heat exchanger, throttling arrangement 5 and the evaporimeter that connect gradually, supercooling reheat heat exchanger with the evaporimeter is located in the wind channel, heat pipe loop with the surface cooler also locates in the wind channel, fan 7 is located in the wind channel, the air flows under the effect of fan.
Example one
As shown in fig. 1, the energy-saving dehumidifying refrigeration heat exchanger according to an embodiment of the present invention includes a refrigerant loop, the refrigerant loop includes a compressor, a condenser 1, a liquid storage, a dry filter 2, an overcooling reheating flow rate adjusting device, an overcooling reheating heat exchanger, a throttling device 5, an evaporator, and a gas-liquid separator 6, the overcooling reheating flow rate adjusting device includes a reheating flow rate adjusting valve 3 and a main path flow rate adjusting valve 4, the throttling device 5 may be a capillary tube, a throttle valve, or an expansion valve, the refrigerant loop has a connection structure that an outlet tube of the compressor is connected to an inlet tube of the condenser 1, an outlet tube of the condenser 1 is connected to an inlet tube of the liquid storage, an outlet tube of the liquid storage is connected to an inlet tube of the dry filter 2, an outlet tube of the dry filter 2 is connected to one end of the reheating flow rate adjusting valve 3, the other end of the reheating flow regulating valve 3 is connected with an inlet pipe of the supercooling reheating heat exchanger, an outlet pipe of the supercooling reheating heat exchanger is connected with one end of the throttling device 5, the other end of the throttling device 5 is connected with an inlet pipe of the evaporator, an outlet pipe of the evaporator is connected with an inlet pipe of the gas-liquid separator 6, an outlet pipe of the gas-liquid separator 6 is connected with an inlet pipe of the compressor, and in order to control the flow of the main path, the series structure of the reheating flow regulating valve 3 and the supercooling reheating heat exchanger is connected with a pipeline of the main path flow regulating valve 4 in parallel.
The supercooling reheat flow rate adjusting means in the refrigerating and heat exchanging apparatus may have various schemes, but in any scheme, the purpose is to increase the pressure drop of the main path by changing the flow area of the main path, thereby promoting the refrigerant to flow to the supercooling reheat heat exchanger, besides the above adjusting form, the reheat flow rate adjusting valve 3 may be disposed between the outlet pipe of the supercooling reheat heat exchanger and the inlet pipe of the throttling means, a three-way flow rate adjusting valve 10 as shown in fig. 2 may be further employed, three ports of the three-way flow rate adjusting valve 10 are respectively connected to the outlet pipe of the condenser 1, the inlet pipe of the supercooling reheat heat exchanger and the inlet pipe of the throttling means 5, three ports of the three-way flow rate adjusting valve 10 may also be respectively connected to the outlet pipe of the supercooling reheat heat exchanger, the inlet pipe of the throttling means 5 and the outlet pipe of the condenser 1, or a plurality of regulating valves are connected in parallel on the main path as shown in figure 3, even the regulating valve is connected in parallel with the bypass pipe with the reduced diameter as shown in figure 4, and the like. The regulating valve can be a valve with continuous regulating capacity, and can also be a solenoid valve.
The heat pipe loop comprises a precooling heat exchanger and a reheating heat exchanger, and the precooling heat exchanger and the reheating heat exchanger are respectively connected with at least one liquid pipe through at least one air pipe.
The evaporator is positioned at the position of the air duct close to the air inlet, and the supercooling reheating heat exchanger is positioned at the position of the air duct close to the air outlet; the precooling heat exchanger is positioned on one side of the evaporator close to the air inlet, and the reheating heat exchanger is positioned on the other side of the evaporator close to the air outlet;
the refrigeration heat exchange device further comprises a controller (not shown), and the controller controls the work of the supercooling reheat flow adjusting device and the throttling device 5.
The refrigeration heat exchange device further comprises a temperature monitor (not shown), and the temperature monitor is connected with the controller and used for monitoring and feeding back the temperature of the air outlet or the air return inlet.
The working principle of the refrigeration heat exchange device is briefly explained in the following in combination with the structure of the refrigeration heat exchange device:
the circulation process of the refrigerant in the refrigerant loop is as follows: the refrigerant is compressed by a compressor to become high-temperature high-pressure gas, the high-temperature high-pressure gas enters a condenser 1 positioned outdoors and is radiated to form high-pressure normal-temperature liquid or gas-liquid mixture, the high-pressure normal-temperature liquid or the gas-liquid mixture flows through a liquid reservoir and a drying filter 2, a reheating flow regulating valve 3 of a supercooling reheating flow regulating device bypasses a part of the refrigerant to a supercooling reheating heat exchanger, wherein the bypass quantity is determined by the outlet air temperature, the bypass quantity is increased when the temperature is not reached, the refrigerant entering the supercooling reheating heat exchanger mainly takes the condensed liquid as the main part, single-phase heat exchange is mainly carried out in the supercooling reheating heat exchanger, the high-pressure normal-temperature liquid in the supercooling reheating heat exchanger exchanges heat with the outside air to form high-pressure low-temperature liquid, and then the high-pressure low-temperature liquid is mixed with the other part of the non-supercooling refrigerant passing through a main flow regulating valve 4, and the mixed high-pressure low-temperature refrigerant is changed into low-temperature liquid through a throttling device 5, the low-temperature low-pressure liquid enters the evaporator and exchanges heat with the outside air in the evaporator, the low-temperature low-pressure liquid refrigerant absorbs the heat of the air and then is gasified to generate low-pressure gaseous refrigerant, the low-pressure gaseous refrigerant is sucked by the compressor and compressed by the compressor to form high-temperature high-pressure gaseous refrigerant, and the circulation is continuous.
The air cooling, dehumidifying and reheating processes in the air duct are as follows: external air enters the air duct under the action of the fan 7 and exchanges heat with the surfaces of the precooling heat exchanger, the evaporator, the reheating heat exchanger and the supercooling reheating heat exchanger in sequence, after the air passes through the precooling heat exchanger, working media in the precooling heat exchanger absorb heat from the air and evaporate to become gas working media, the gas working media flow into the reheating heat exchanger, the temperature of the external air is reduced due to heat exchange and approaches to the saturation state of the air, at the moment, the air passes through the evaporator, the temperature of the air is further reduced, most of moisture in the air is condensed out, the absolute humidity of the air is reduced, and the relative humidity is very high; the air further circulates, through the reheat heat exchanger, because the gas working medium temperature in the reheat heat exchanger is higher, outside air temperature is lower, the gas working medium in the reheat heat exchanger condenses to release heat, become liquid working medium and flow into the precooling heat exchanger again and continue above-mentioned circulation, outside air is because the heat transfer, the air temperature rises, the refluence passes through the cold reheat heat exchanger, because condenser 1 condensation temperature is higher, therefore flow into the high pressure normal atmospheric temperature liquid temperature in the supercooling reheat heat exchanger still higher, the air temperature further rises, the absolute humidity of air is unchangeable at this moment, relative humidity is showing and is descending, thereby reach required temperature, humidity requirement.
The process of controlling the air outlet temperature by the refrigeration heat exchange device is as follows: the temperature monitor monitors the temperature of the air outlet, when the air outlet temperature is lower than a set target temperature, the controller controls the large reheating flow regulating valve 3 to be opened, the small main path flow regulating valve 4 to be closed, and the flow of the refrigerant passing through the super-cooling reheating heat exchanger is increased, so that the air outlet temperature is increased; when the outlet air temperature is higher than the set target temperature, the controller controls the small reheating flow regulating valve 3 to be closed, the large main path flow regulating valve 4 to be opened, the flow of the refrigerant passing through the super-cooling reheating heat exchanger is reduced, and therefore the outlet air temperature is reduced.
In typical central air-conditioning application, assuming that the air outlet temperature is required to be 18 ℃ and the air inlet temperature is 26 ℃, the precooled air temperature can be reduced to 22 ℃, then the air is cooled and dehumidified by an evaporator, the air temperature behind the evaporator is changed to 12 ℃, the air temperature is increased to 16 ℃ through the heating effect of a reheating heat exchanger, and the air temperature does not reach the air outlet temperature requirement of 18 ℃. The flow rate of the refrigerant supplied to the supercooling reheating heat exchanger is adjusted by the supercooling reheating flow rate adjusting device, so that the outlet air temperature can be controlled to be 18 ℃ as required. In contrast, if the supercooling reheat heat exchanger is simply adopted and no heat pipe is provided, air is cooled and dehumidified through the evaporator under the condition of the inlet air temperature of 26 ℃, the temperature behind the evaporator is generally 12 ℃, and the refrigerating capacity of the refrigerating system at the moment is equivalent to the energy required for cooling and dehumidifying the air from 26 ℃ to 12 ℃. If the outlet air temperature is still 18 ℃, the supercooling reheating heat exchanger is needed to increase the air temperature from 12 ℃ to 18 ℃. The temperature difference is quite large, the supercooling reheating heat exchanger is single-phase heat exchange, the heat exchange coefficient is low, the required heat exchange effect can be achieved only by a large heat exchange area, the cost of the heat exchanger is increased, and the resistance of the heat exchanger is increased.
Example two
As shown in fig. 5, in the second embodiment, a four-way reversing valve 8 and a check valve 9 for switching heating and cooling conditions are added to a refrigerant circuit compared with the first embodiment, the four-way reversing valve 8 is provided with C, D, E and S four ports, the port C is connected to an inlet pipe of the condenser 1, the port D is connected to an outlet pipe of the compressor, the port E is connected to an outlet pipe of the evaporator, and the port S is connected to an inlet pipe of the gas-liquid separator 6.
Four check valves 9 are additionally arranged around a liquid storage device of the refrigerant loop, the four check valves 9 are respectively arranged between inlet pipes of the condenser 1 and the liquid storage device, between an outlet pipe of the liquid storage device and the reheating flow regulating valve 3, between the reheating flow regulating valve 3 and the inlet pipe of the liquid storage device, between the outlet pipe of the liquid storage device and the condenser 1, the first two check valves 9 are used for controlling the refrigerant to flow to the supercooling reheating heat exchanger from the condenser 1, and the second two check valves 9 are used for controlling the refrigerant to flow to the condenser 1 from the supercooling reheating heat exchanger.
A check valve 9 connected in series is additionally arranged between the throttling device 5 and an outlet pipe of the supercooling reheating heat exchanger and used for controlling the refrigerant to flow from the supercooling reheating heat exchanger to the evaporator, and a check valve 9 connected in parallel with the throttling device 5 is additionally arranged between an inlet pipe of the evaporator and an outlet pipe of the supercooling reheating heat exchanger and used for controlling the refrigerant to flow from the evaporator to the supercooling reheating heat exchanger.
The working principle of the refrigeration heat exchange device is briefly explained in the following in combination with the structure of the refrigeration heat exchange device:
under the refrigeration working condition, the circulation process of the refrigerant in the refrigerant loop is similar to the embodiment, the refrigerant is compressed by a compressor to become high-temperature high-pressure gas, the high-temperature high-pressure gas flows to a port C through a port D of a four-way reversing valve 8 and then enters a condenser 1 positioned outdoors, and is radiated to form high-pressure normal-temperature liquid or gas-liquid mixture in the condenser 1, the high-pressure normal-temperature liquid or gas-liquid mixture enters a liquid storage device through a one-way valve 9 arranged between an outlet pipe of the condenser 1 and an inlet pipe of the liquid storage device, then passes through the one-way valve 9 arranged between the outlet pipe of the liquid storage device and a reheating flow regulating valve 3, one part of the high-pressure normal-temperature liquid passes through the reheating flow regulating valve 3 and then enters a supercooling reheating heat exchanger, the high-pressure normal-temperature liquid in the supercooling reheating heat exchanger exchanges heat with outside air to form high-pressure low-temperature liquid, and then is mixed with the other part of the refrigerant passing through a main path flow regulating valve 4, the mixed high-pressure low-temperature refrigerant passes through the check valve 9 and the throttling device 5 which are connected with the throttling device 5 in series and then is changed into low-temperature low-pressure liquid, the low-temperature low-pressure liquid enters the evaporator and exchanges heat with the outside air in the evaporator, the low-temperature low-pressure liquid refrigerant absorbs the heat of the air and then is gasified to generate low-pressure gaseous refrigerant, the low-pressure gaseous refrigerant is sucked by the compressor and compressed by the compressor to form high-temperature high-pressure gaseous refrigerant, and the circulation is continuous.
In the refrigerating condition, the dehumidification process of the air in the air duct is the same as that of the first embodiment.
Under the refrigeration working condition, the process of controlling the air outlet temperature by the controller of the refrigeration heat exchange device is the same as that of the first embodiment.
In the heating condition, the circulation process of the refrigerant in the refrigerant loop is as follows: the functions of the evaporator and the condenser 1 are replaced mutually, the evaporator is changed into a condenser, the condenser is changed into an evaporator, a refrigerant is compressed by a compressor to become high-temperature high-pressure gas, the high-temperature high-pressure gas flows to an E port through a D port of a four-way reversing valve 8 and then enters the indoor condenser (the evaporator under the refrigerating condition) and is radiated to form high-pressure normal-temperature liquid or gas-liquid mixture, the high-pressure normal-temperature liquid or gas-liquid mixture flows into a supercooling reheating heat exchanger through a one-way valve 9 which is connected with a throttling device 5 in parallel, a main flow regulating valve can control the flow of the refrigerant entering the reheating heat exchanger, the refrigerant in the reheating heat exchanger forms low-temperature liquid and flows into a reservoir, then enters the evaporator (the condenser 1 under the refrigerating condition) to absorb heat to form low-pressure gaseous refrigerant, and the low-pressure gaseous refrigerant flows to an S port through a C port of the four-way reversing valve 8, then sucked by the compressor, compressed by the compressor and then formed into high-temperature high-pressure gaseous refrigerant, and the process is continuously circulated.
Under the heating condition, the temperature of outside air is low, the air humidity is low, cooling and dehumidification are not needed, air enters an air channel under the action of a fan, a heat pipe loop does not work due to the low air temperature, the temperature of the air rises after passing through a condenser (an evaporator under the refrigerating working condition), and the air temperature further rises due to the fact that a refrigerant further releases heat into the air after passing through a supercooling reheating heat exchanger, so that the required temperature requirement is met.
Under the heating condition, the controller of the refrigeration heat exchange device controls the air outlet temperature, when the air outlet temperature is lower than the set target temperature, the main path flow regulating valve 4 is closed down, the flow of the refrigerant passing through the super-cooling reheating heat exchanger is increased, and the air outlet temperature is increased; when the outlet air temperature is higher than the set target temperature, the main path flow regulating valve 4 is opened, the flow of the refrigerant passing through the supercooling reheating heat exchanger is reduced, and therefore the outlet air temperature is reduced. At this time, the supercooling and reheating heat exchanger is positioned behind the condenser 1, which is equivalent to increase of the heat exchange area of the condenser 1, so that the condensation temperature can be reduced, and the supercooling degree of the refrigerant can be increased, thereby improving the heating efficiency of the device.
EXAMPLE III
As shown in fig. 6, for the energy-saving dehumidification refrigeration heat exchange device according to the third embodiment, the energy-saving dehumidification refrigeration heat exchange device includes a plurality of refrigerant loops, each refrigerant loop includes a compressor, a condenser 1, a liquid storage device, a drying filter 2, a reheating flow regulating valve 3, a main path flow regulating valve 4, a supercooling reheating heat exchanger, a throttling device 5, an evaporator and a gas-liquid separator 6, the throttling device 5 may be a capillary tube, a throttle valve or an expansion valve, the connection structure of the refrigerant loops is that an outlet pipe of the compressor is connected to an inlet pipe of the condenser 1, an outlet pipe of the condenser 1 is connected to an inlet pipe of the liquid storage device, an outlet pipe of the liquid storage device is connected to an inlet pipe of the drying filter 2, an outlet pipe of the drying filter 2 is connected to one end of the reheating flow regulating valve 3, and the other end of the reheating flow regulating valve 3 is connected to an inlet pipe of the supercooling reheating heat exchanger, an outlet pipe of the supercooling reheating heat exchanger is connected with one end of the throttling device 5, the other end of the throttling device 5 is connected with an inlet pipe of the evaporator, an outlet pipe of the evaporator is connected with an inlet pipe of the gas-liquid separator 6, an outlet pipe of the gas-liquid separator 6 is connected with an inlet pipe of the compressor, and in order to control the main path flow, a main path flow adjusting valve 4 pipeline is connected in parallel with a series structure of the reheating flow adjusting valve 3 and the supercooling reheating heat exchanger.
The supercooling reheating heat exchangers and the evaporators of the refrigerant loops are both positioned in an air duct, the supercooling reheating heat exchangers are arranged in parallel at the position, close to an air outlet, of the air duct, and the evaporators are arranged in parallel at the position, close to an air inlet, of the air duct.
Example four
As shown in fig. 7, in a fourth embodiment, the energy-saving dehumidifying refrigeration heat exchanger includes a plurality of refrigerant loops, each of the refrigerant loops includes a compressor, a condenser 1, a liquid reservoir, a drying filter 2, a reheating flow regulating valve 3, a main path flow regulating valve 4, a supercooling reheating heat exchanger, a throttling device 5, an evaporator and a gas-liquid separator 6, the throttling device 5 may be a capillary tube, a throttle valve or an expansion valve, the supercooling reheating heat exchanger and the evaporator are respectively provided with a plurality of pairs of inlet tubes and outlet tubes, a connection structure of each refrigerant loop is that the outlet tube of the compressor is connected to the inlet tube of the condenser 1, the outlet tube of the condenser 1 is connected to the inlet tube of the liquid reservoir, the outlet tube of the liquid reservoir is connected to the inlet tube of the drying filter 2, and the outlet tube of the drying filter 2 is connected to one end of the reheating flow regulating valve 3, the other end of the reheating flow regulating valve 3 is connected with one inlet pipe of the supercooling reheating heat exchanger, one outlet pipe of the supercooling reheating heat exchanger is connected with one end of the throttling device 5, the other end of the throttling device 5 is connected with one inlet pipe of the evaporator, one outlet pipe of the evaporator is connected with the inlet pipe of the gas-liquid separator 6, the outlet pipe of the gas-liquid separator 6 is connected with the inlet pipe of the compressor, and in order to control the flow of the main path, the series structure of the reheating flow regulating valve 3 and the supercooling reheating heat exchanger is connected with a pipeline of the main path flow regulating valve 4 in parallel.
EXAMPLE five
As shown in fig. 8, in the fifth embodiment, the refrigerant circuit includes a compressor, a condenser 1, a reheat flow regulating valve 3, a main path flow regulating valve 4, a subcooling reheat heat exchanger, a throttling device 5, and an evaporator, and the structure of the refrigerant circuit is similar to that of the first embodiment and is not described herein again. The difference lies in, the heat pipe loop is the I type, the first half of I type heat pipe loop is reheat heat exchanger, the lower half is precool heat exchanger, precool heat exchanger with be linked together through trachea and liquid pipe between the reheat heat exchanger, correspondingly, the wind channel is the U type, precool heat exchanger and evaporimeter are located air intake one side in U type wind channel, reheat heat exchanger, supercooling reheat heat exchanger are located air outlet one side in U type wind channel, heat pipe loop except the form that figure 8 shows, probably has other overall arrangement forms in addition, and the repeated description is no longer given here. EXAMPLE six
As shown in fig. 9, the connection structure of the refrigerant circuit in this embodiment is similar to that in the fifth embodiment, except that the heat pipe circuit is L-shaped, two straight edges of the L-shaped heat pipe circuit are formed by the pre-cooling heat exchanger and the reheating heat exchanger, and the pre-cooling heat exchanger and the reheating heat exchanger are communicated with each other through an air pipe and a liquid pipe; on the other hand, the refrigerant loop is provided with a plurality of condensers 1 and a plurality of regulating valves for controlling the condensers 1, the condensers 1 are connected in parallel, at least one condenser 1 is positioned in an air channel at one side of the supercooling reheating heat exchanger close to the air outlet, the condenser 1 positioned in the air channel is arranged behind the supercooling reheating heat exchanger, the air supply temperature of the air outlet can be further increased, and in addition, the mode of increasing the condensers is also suitable for the situations of a U-shaped heat pipe loop and an I-shaped heat pipe loop
The process of controlling the air outlet temperature by the refrigeration heat exchange device is as follows: the temperature monitor monitors the temperature of the air outlet, when the air outlet temperature is lower than a set target temperature, the controller controls the opening of the large reheating flow regulating valve 3 and the closing of the small main path flow regulating valve 4 to increase the flow of the refrigerant passing through the supercooling reheating heat exchanger so as to increase the air outlet temperature, if the flow of the refrigerant passing through the supercooling reheating heat exchanger is increased to the maximum, the air outlet temperature is still lower than the set target temperature, and the controller controls the opening of the regulating valve which is positioned in the air duct and connected with the condenser 1 so as to increase the air outlet temperature to the set target temperature; when the outlet air temperature is higher than the set target temperature, the controller controls the small reheating flow regulating valve 3 to be closed, the large main path flow regulating valve 4 to be opened, the flow of the refrigerant passing through the super-cooling reheating heat exchanger is reduced, and therefore the outlet air temperature is reduced.
EXAMPLE seven
As shown in fig. 1, 5 or 8, a surface cooler may be additionally arranged between the precooling heat exchanger and the reheating heat exchanger of the heat pipe loop. In some applications, the client may supply additional low temperature chilled water, and a set of surface coolers may be added between the pre-cooling heat exchanger and the reheating heat exchanger to cool the air. Its advantages are sharing the load of air, and low initial investment.
In another application, the air needs to be treated to a lower relative humidity, a set of surface coolers can be added behind the precooling heat exchanger and in front of the evaporator, and the air is cooled and dehumidified by adopting a common water cooler. Because the common water chiller can not operate to low temperature, the evaporator is adopted to further cool and dehumidify the dehumidified air so as to achieve the final required humidity. Similarly, the surface air cooler may be disposed between the evaporator and the reheat heat exchanger, where the evaporator is used to perform the first stage dehumidification. And a low-temperature water cooler is used for supplying chilled water with lower temperature to the surface cooler for further cooling and dehumidification.
When the temperature is high in summer, if the heat pipe is too large in shape selection, the air outlet temperature may be still too high even if the supercooling reheating device is completely closed. At the moment, a group of surface coolers can be added before the precooling heat exchanger to reduce the inlet air temperature, so that the outlet air temperature is indirectly reduced. Similarly, a group of surface coolers can be added behind the supercooling reheating heat exchanger to reduce the outlet air temperature.
The surface cooler in the embodiment can be replaced by an evaporator of an independent refrigerating system, and the similar purpose is realized.
The structure shown in fig. 1, 5 or 8 of this embodiment is equally applicable to all of the foregoing embodiments. While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (9)
1. The utility model provides an energy-conserving dehumidification's refrigeration heat transfer device, includes an at least refrigerant return circuit and wind channel, the refrigerant return circuit is including compressor, condenser (1), supercooling reheat heat exchanger, throttling arrangement (5) and the evaporimeter that connects gradually, the evaporimeter with supercooling reheat heat exchanger is located respectively in the wind channel, the evaporimeter is located the position that the wind channel is close to the air intake, supercooling reheat heat exchanger is located the position that the wind channel is close to the air outlet, its characterized in that, refrigeration heat transfer device still includes:
the heat pipe loop is located in the air duct and comprises a precooling heat exchanger and a reheating heat exchanger, the precooling heat exchanger is located in the air duct between the air inlet and the evaporator, and the reheating heat exchanger is located in the air duct between the evaporator and the supercooling reheating heat exchanger.
2. The energy-saving dehumidifying refrigeration heat exchange device as claimed in claim 1, wherein the heat pipe loop is U-shaped, two straight edges of the U-shaped heat pipe loop are formed by the pre-cooling heat exchanger and the reheating heat exchanger, and the pre-cooling heat exchanger and the reheating heat exchanger are communicated through an air pipe and a liquid pipe.
3. The energy-saving dehumidifying refrigeration heat exchange device as claimed in claim 1, wherein the heat pipe loop is L-shaped, two straight edges of the L-shaped heat pipe loop are formed by the pre-cooling heat exchanger and the reheating heat exchanger, and the pre-cooling heat exchanger and the reheating heat exchanger are communicated through an air pipe and a liquid pipe.
4. The energy-saving dehumidifying refrigeration heat exchange device as claimed in claim 1, wherein the heat pipe loop is I-shaped, the upper half part of the I-shaped heat pipe loop is the reheating heat exchanger, the lower half part of the I-shaped heat pipe loop is the precooling heat exchanger, and the precooling heat exchanger and the reheating heat exchanger are communicated through a gas pipe and a liquid pipe.
5. An energy-saving dehumidifying refrigeration heat exchanger as claimed in claim 1, wherein the refrigerant circuit comprises a plurality of condensers (1) connected in parallel, and at least one condenser (1) is located in the air duct of the supercooling reheat heat exchanger on the side close to the air outlet.
6. The energy-saving dehumidifying refrigeration heat exchange device as claimed in claim 1, comprising a plurality of said refrigerant circuits, wherein the supercooling reheat heat exchangers in the plurality of said refrigerant circuits are connected in parallel at a position close to the air outlet of the air duct, and the evaporators in the plurality of said refrigerant circuits are connected in parallel at a position close to the air inlet of the air duct.
7. An energy-saving dehumidifying refrigeration heat exchanger as claimed in claim 1, wherein the supercooling reheat heat exchanger and the evaporator are respectively provided with a plurality of pairs of inlet pipes and outlet pipes, and a plurality of refrigerant loops are formed by the plurality of pairs of inlet pipes and outlet pipes of the supercooling reheat heat exchanger and the evaporator.
8. The energy-saving dehumidifying refrigeration heat exchange device as claimed in claim 1, further comprising a surface air cooler, wherein the surface air cooler is located in the air duct between the reheating heat exchanger and the air inlet.
9. The energy-saving dehumidifying refrigeration heat exchanger device as claimed in any one of claims 1 to 8, wherein the refrigerant circuit further comprises a subcooling/reheating flow rate adjusting device, and the subcooling/reheating flow rate adjusting device comprises at least one flow rate adjusting valve, and the flow rate adjusting valve is connected between the condenser and the subcooling/reheating heat exchanger and/or connected between an inlet pipe and an outlet pipe of the subcooling/reheating heat exchanger in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821297629.7U CN215892840U (en) | 2018-08-13 | 2018-08-13 | Energy-saving dehumidifying refrigeration heat exchange device |
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| CN201821297629.7U CN215892840U (en) | 2018-08-13 | 2018-08-13 | Energy-saving dehumidifying refrigeration heat exchange device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800668A (en) * | 2018-08-13 | 2018-11-13 | 沈珂 | A kind of the cooling heat exchange device and its control method of energy saving dehumidifying |
| CN114777391A (en) * | 2022-04-27 | 2022-07-22 | 青岛澳柯玛生物医疗有限公司 | Dehumidification functional system |
-
2018
- 2018-08-13 CN CN201821297629.7U patent/CN215892840U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800668A (en) * | 2018-08-13 | 2018-11-13 | 沈珂 | A kind of the cooling heat exchange device and its control method of energy saving dehumidifying |
| CN114777391A (en) * | 2022-04-27 | 2022-07-22 | 青岛澳柯玛生物医疗有限公司 | Dehumidification functional system |
| CN114777391B (en) * | 2022-04-27 | 2023-06-06 | 青岛澳柯玛生物医疗有限公司 | Dehumidification function system |
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