CN211345912U - Refrigerating system with drying function and drying device - Google Patents
Refrigerating system with drying function and drying device Download PDFInfo
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- CN211345912U CN211345912U CN201920962908.9U CN201920962908U CN211345912U CN 211345912 U CN211345912 U CN 211345912U CN 201920962908 U CN201920962908 U CN 201920962908U CN 211345912 U CN211345912 U CN 211345912U
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- 238000001035 drying Methods 0.000 title claims abstract description 61
- 239000003507 refrigerant Substances 0.000 claims abstract description 41
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims description 53
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000007791 dehumidification Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 238000010257 thawing Methods 0.000 abstract description 10
- 230000002441 reversible effect Effects 0.000 abstract description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 8
- 238000005457 optimization Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model relates to a refrigerating system especially relates to a refrigerating system and drying device with drying function. The utility model discloses a single-stage heat pump cycle and the switching of overlapping heat pump cycle, open heating combines together with closed dehumidification mode, realize the dry whole high-efficient operation of heat pump, satisfy the required heat of continuous heating in the defrosting process through setting up auxiliary heater, ensure that the heating process lasts, avoided the problem that the heating intensification process is slow because of the defrosting leads to, the reversible cycle of air supply mode is realized to the flow direction through changing the refrigerant, the inhomogeneous phenomenon of drying that complicated wind channel design and one-way air supply caused has been avoided.
Description
Technical Field
The utility model relates to a refrigerating system especially relates to a refrigerating system and drying device with drying function.
Background
When the refrigeration system technology is adopted for drying materials, a plurality of drying temperatures are higher than 80 ℃, the high-efficiency operation under large temperature rise cannot be realized by adopting a conventional air source heat pump (except a CO2 heat pump), and at the moment, the cascade cycle or the multistage compression cycle is generally adopted. The cascade heat pump links the two heat pump systems through the condensing evaporator, meets the requirement of high heat supply temperature under the condition of large temperature rise, and solves the problems of difficult system design, difficult oil balancing of the compressor and the like possibly existing in multi-stage compression. However, the prior art does not consider the efficient operation of the system at different drying room temperatures, and does not consider the problem that the energy consumption for dehumidification can be obviously reduced by utilizing the evaporator in the drying and dehumidifying section.
Therefore, the prior art can not realize the efficient operation of systems with different drying room temperatures and drying stages.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a can realize the refrigerating system and the drying device of the high-efficient operation of different dry room temperatures and dry stage system.
A refrigeration system with drying function, comprising a first subsystem and a second subsystem, which are overlapped together by a condensing evaporator, wherein:
the first subsystem comprises a first refrigeration cycle loop formed by sequentially connecting a first compressor, a first heat exchanger, a first throttling device, a condensation evaporator and an evaporator side channel;
the first subsystem also comprises a second heat exchanger branch which is connected with a second heat exchanger, a second throttling device and a second valve in series, one end of the second heat exchanger branch is connected to a first refrigeration circulation loop between the first heat exchanger and the first throttling device, the connection point is marked as A, the other end of the second heat exchanger branch is connected to the first refrigeration circulation loop between the condensation evaporator, an evaporator side channel outlet and a compressor suction port, the connection point is marked as F, and the second throttling device is arranged at the upstream of the second heat exchanger and is closer to the connection point; a first valve is disposed in series with said first throttling means and condenser evaporator on the first refrigeration cycle loop between said connection points A, F;
the second subsystem comprises a second refrigeration cycle loop formed by sequentially connecting a second compressor, a condenser side channel of a condensation evaporator, a fifth valve, a third throttling device and an evaporator;
the second subsystem also comprises an auxiliary heating branch which is serially connected with an auxiliary heater, a fourth throttling device and a sixth valve, one end of the auxiliary heating branch is connected to a second refrigeration cycle loop between a compressor air suction port and an evaporator inlet, the connection point is marked as C, the other end of the auxiliary heating branch is connected to a second refrigeration cycle loop between a fifth valve inlet and a condenser side channel outlet of a condensation evaporator, the connection point is marked as E, and the auxiliary heater is arranged at the downstream of the fourth throttling device and is closer to the connection point C;
the second subsystem further comprises a second connecting branch (H) connected with a fourth valve in seriesBD) The second connecting branch (H)BD) One end of the second refrigerating circulation loop is connected with a second refrigerating circulation loop between the third throttling device and the fifth valve, and the connection point is marked as D; the other end of the second refrigerating circulation loop is connected between the exhaust port of the compressor and the inlet of the channel at the condenser side of the condensing evaporator, and the connection point is marked as B.
Preferably, the first refrigeration cycle and the second heat exchanger branch (H)AF) A four-way reversing valve is arranged between the first and the second connecting rods, the four-way valve is provided with a first port, a second port, a third port and a fourth port, wherein the fourth port and the first port are connected at the fourth portA refrigeration cycle with a second port and a third port connected to a second heat exchanger branch (H)AF) When the exhaust gas of the first compressor flows to the second heat exchanger, the second heat exchanger realizes the action of a condenser, and the first heat exchanger realizes the action of an evaporator; when the first compressor discharge flows to the first heat exchanger, the first heat exchanger performs a condenser function, and the second heat exchanger or the evaporator side passage of the condensing evaporator performs an evaporator function.
Preferably, a seventh valve is arranged on the first refrigeration cycle loop between the connection point A and the first heat exchanger and/or an eighth valve is arranged on the first refrigeration cycle loop between the outlet of the evaporator side channel of the condensation evaporator and the connection point F and/or a third valve is arranged between the inlet of the condenser side channel of the condensation evaporator of the second refrigeration cycle loop and the connection point B.
Preferably, the first valve is provided with two second heat exchanger branches (H), one of which is arranged between the second throttling device and the second heat exchangerAF) And the other second heat exchanger branch (H) is arranged between the second port of the four-way valve and the connecting point FAF) The above.
Preferably, one or more or all of the first to eighth valves are shut-off valves.
Preferably, the refrigerant of the first subsystem is medium-high temperature refrigerant, the critical temperature of the refrigerant is not higher than 200 ℃, and the refrigerant can be one or more of the following: R134A, R1234ze (Z), R1234ze (E), R1233zd (E), R245 fa; the refrigerant in the second subsystem is a normal-temperature or low-temperature refrigerant, the critical temperature of the refrigerant is not higher than 120 ℃, and the refrigerant can be one or more of the following: r32, R410A, R290.
The utility model also provides an operation control method to above-mentioned refrigerating system who has drying function, its characterized in that:
when the temperature Tin of the drying room is less than the preset temperature T1 and defrosting is not needed, the temperature in the drying room is low, the drying room can be rapidly heated by adopting a cascade heat pump cycle, the first subsystem and the second subsystem are enabled to operate, the valve of the first subsystem is controlled to enable the refrigerant in the first subsystem to sequentially flow to a first compressor, a first heat exchanger, a first throttling device, a condensing evaporator side channel and a first compressor, and the refrigerant in the second subsystem sequentially flows to a second compressor, a condensing evaporator condenser side channel, a third throttling device, an evaporator and a second compressor.
Preferably, when the drying room temperature Tin is less than the preset temperature T1 and defrosting is required, the operation mode and the refrigerant flow direction of the first subsystem are not changed, and are consistent with the operation mode when the drying room temperature Tin is less than T1, the valve of the second subsystem is controlled to enable refrigerant gas to be divided into two parts after being discharged from the second compressor, and one part of refrigerant gas flows through the fourth valve, the third throttling device and the evaporator to defrost the evaporator; another part of the refrigerant flows through the condenser side passage of the condensing evaporator, the fourth throttling device and the auxiliary heater, and then the two parts of the refrigerant are converged and sucked together by the second compressor, thereby completing the whole cycle.
Preferably, when the temperature Tin of the drying room is more than or equal to T1, the dehumidification operation mode is started, the first subsystem operates independently, the whole drying system operates in a closed mode, latent heat of condensed water is recovered by using an evaporator, the flow direction of a refrigerant in the first subsystem is a first compressor, a first heat exchanger, a second throttling device, a second heat exchanger and the first compressor, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator. After the dehumidification operation is carried out for a period of time, the four-way reversing valve is opened, the first subsystem is enabled to reversely circulate, the fan reversely rotates, the first heat exchanger is an evaporator, the second heat exchanger (132) is a condenser, and the drying medium flows to the first heat exchanger and the second heat exchanger.
The utility model also provides a drying device, it has drying room and refrigerating system, adopts the above-mentioned refrigerating system that has drying function or adopts above-mentioned operation control method, just first heat exchanger, second heat exchanger set up in drying room.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
Fig. 1 shows an embodiment 1 of the refrigeration system with drying function of the present invention;
FIG. 2 is a schematic view of an embodiment of the drying apparatus of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
Example 1:
as shown in fig. 1, a refrigeration system with drying function includes a first subsystem 1 and a second subsystem 2, which are overlapped together by a condensing evaporator 131, wherein the refrigerant of the first subsystem is preferably medium-high temperature refrigerant, the critical temperature of which is not higher than 200 ℃, and can be one or more of the following combinations: r134(a), R1234ze (Z), R1234ze (E), R1233zd (E), R245 fa; the refrigerant in the second subsystem is preferably a normal-temperature or low-temperature refrigerant, the critical temperature of the refrigerant is not higher than 120 ℃, and the refrigerant can be one or more of the following combinations: r32, R410A, R290 and.
The specific optimization scheme of the refrigeration system is as follows:
the first subsystem 1 comprises a first refrigeration cycle loop formed by sequentially connecting a first compressor 101, a first heat exchanger 121, a first throttling device 104 and evaporator side passages 131c-131d of a condensation evaporator 131; the second subsystem 2 comprises a second refrigeration cycle loop formed by connecting a second compressor 201, condenser-side channels 131a-131b of the condensing evaporator 131, a fifth valve 205, a third throttling device 207 and an evaporator 231 in sequence;
further optimization:
the first sub-system further comprises a second heat exchanger branch H in series with the second heat exchanger 132, the second throttling means 103, the second valve 105/106AFSecond heat exchanger branch HAFOne end of the second throttling device 103 is connected to the first refrigeration cycle loop between the first heat exchanger 121 and the first throttling device 104, the connection point is marked as A, the other end of the second throttling device is connected to the first refrigeration cycle loop between the outlet of the evaporator side channel 131c-131d of the condensation evaporator 131 and the suction port of the compressor, the connection point is marked as F, and the second throttling device 103 is arranged at the upstream of the second heat exchanger 132 and is closer to the connection pointA contact A; on the first refrigeration cycle loop between connection points A, F, there is provided a first valve 107/109 in series relationship with first throttle device 104, condenser-evaporator 131;
the second subsystem 2 further comprises an auxiliary heating branch H connected in series with an auxiliary heater 232, a fourth throttling device 209 and a sixth valve 208CEThe auxiliary heating branch HCEOne end of the auxiliary heater is connected to a second refrigeration cycle loop between a suction port of the compressor and an inlet of the evaporator 231, the connection point is marked as C, the other end of the auxiliary heater is connected to the second refrigeration cycle loop between an inlet of the fifth valve 205 and outlets of condenser side channels 131a-131b of the condensing evaporator 131, the connection point is marked as E, and the auxiliary heater 232 is arranged at the downstream of the fourth throttling device and is closer to the connection point C;
the second subsystem 2 further includes a second connecting branch HBD serially connected to the fourth valve 204, one end of the second connecting branch HBD is connected to the second refrigeration cycle loop between the third throttling device 207 and the fifth valve 205, and the connection point is denoted as D; the other end is connected to the second refrigeration cycle circuit between the compressor discharge port and the inlet of the condenser-side channel 131a-131B of the condenser-evaporator 131, and the connection point is denoted by B.
So, combine together through open heating and closed dehumidification mode, satisfy the defrosting in-process and continue the required heat of heating through setting up auxiliary heater, ensure that the heating process lasts, avoided the slow problem of heating intensification process because of the defrosting leads to.
In order to further realize the efficient operation of the system at different temperatures, the method is further optimized as follows:
first refrigeration cycle loop and second heat exchanger branch HAFA four-way reversing valve 112 is arranged between the first and second refrigerating cycle branches H and H, the four-way valve is provided with a first port 112a, a second port 112b, a third port 112c and a fourth port 112d, wherein the fourth port 112d and the first port 112a are connected on the first refrigerating cycle loop, and the second port 112b and the third port 112c are connected on the second heat exchanger branch HAFIn this way, the high-pressure and high-temperature refrigerant discharged from the discharge port of the first compressor 101 can be selectively flowed to the first heat exchanger 121 or the second heat exchanger 132, and the exhaust flow of the first compressor is dischargedWhen the heat is transferred to the second heat exchanger 132, the second heat exchanger 132 realizes the function of a condenser, and the first heat exchanger realizes the function of an evaporator; when the first compressor discharge flows to the first heat exchanger 121, the first heat exchanger 121 performs a condenser function, and the second heat exchanger 132 or the evaporator side passages 131c-131d of the condensing evaporator 131 performs an evaporator function.
The optimization combines the switching of the single-stage heat pump cycle and the cascade heat pump cycle and the open heating and closed dehumidification modes, so that the efficient operation of the whole drying process of the heat pump is realized; meanwhile, the reversible circulation of an air supply mode can be realized by changing the flowing direction of the refrigerant by utilizing the heat pump principle, and the phenomenon of uneven drying caused by complex air duct design and unidirectional air supply is avoided. If the dehumidification operation mode is started, the first subsystem is enabled to operate independently, the whole drying system operates in a closed mode, latent heat of condensed water is recovered by using the evaporator, the flow direction of refrigerant in the first subsystem is the first compressor, the first heat exchanger, the second throttling device, the second heat exchanger and the first compressor, at the moment, the first heat exchanger is the condenser, and the second heat exchanger is the evaporator. After the dehumidification operation is carried out for a period of time, the four-way reversing valve is opened, the first subsystem is enabled to reversely circulate, the fan reversely rotates, the first heat exchanger is an evaporator, the second heat exchanger (132) is a condenser, and the drying medium flows to the first heat exchanger and the second heat exchanger.
From this, carried out above-mentioned optimization the utility model discloses refrigerating system can bring following effect:
1. the high-efficiency operation of the whole drying process of the heat pump is realized by combining the switching of the single-stage heat pump cycle and the cascade heat pump cycle and the open heating and closed dehumidification modes;
2. the auxiliary heater is arranged to meet the requirement of heat required by continuous heating in the defrosting process, so that the heating process is ensured to be continuous, and the problem of slow heating and temperature rising process caused by defrosting is solved;
3. reversible circulation of an air supply mode is realized by changing the flowing direction of the refrigerant, and the phenomenon of uneven drying caused by complex air duct design and unidirectional air supply is avoided.
The utility model discloses utilize valve member control refrigerating system's refrigeration flow path, can also further optimize the setting of refrigerating system valve, of course above-mentioned these means do not require must possess simultaneously. Such as:
a seventh valve 108 is provided on the first refrigeration cycle between the connection point a and the first heat exchanger and/or an eighth valve 109 is provided on the first refrigeration cycle between the outlet of the evaporator-side passage 131c-131d of the condensing evaporator 131 and the connection point F and/or a third valve 202 is provided between the inlet of the condenser-side passage 131a-131B of the second refrigeration cycle condensing evaporator 131 and the connection point B. The first valve is provided in two, one 106 of which is provided on the second heat exchanger branch HAF between the second throttling device 103 and the second heat exchanger 132, and the other one of which is provided on the second heat exchanger branch HAF between the second port 112b of the four-way valve and the connection point F.
One or more or all of the first valve to the eighth valve are stop valves.
Example 2
An example of an operation control method for the refrigeration system of embodiment 1 has the following controls:
when the temperature Tin of the drying room is less than the preset temperature T1 and defrosting is not needed, the temperature in the drying room is low, at the moment, the drying room can be rapidly heated by adopting a cascade heat pump cycle, the first subsystem 1 and the second subsystem 2 are enabled to operate, the valve of the first subsystem is controlled, so that the refrigerant in the first subsystem 1 sequentially flows to the first compressor 101, the first heat exchanger 121, the first throttling device 104, the channel on the condenser-evaporator 131 side and the first evaporator, and the refrigerant in the second subsystem sequentially flows to the second compressor, the channel on the condenser-evaporator condenser side, the third throttling device, the evaporator and the second compressor.
When the temperature Tin of the drying room is less than the preset temperature T1 and defrosting is needed, the operation mode of the first subsystem and the flow direction of the refrigerant are not changed and are consistent with the operation mode when the temperature Tin of the drying room is less than T1, the valve of the second subsystem is controlled to lead the refrigerant gas to be divided into two parts after being discharged from the second compressor, and one part flows through the fourth valve, the third throttling device and the evaporator to defrost the evaporator; another part of the refrigerant flows through the condenser side passage of the condensing evaporator, the fourth throttling device and the auxiliary heater, and then the two parts of the refrigerant are converged and sucked together by the second compressor, thereby completing the whole cycle.
When the temperature Tin of the drying room is more than or equal to T1, the drying room starts to enter a dehumidification operation mode, the first subsystem operates independently, the whole drying system operates in a closed mode, latent heat of condensed water is recovered by using an evaporator, the flow direction of a refrigerant in the first subsystem is a first compressor, a first heat exchanger, a second throttling device, a second heat exchanger and the first compressor, at the moment, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator.
After the dehumidification operation is performed for a period of time, the four-way reversing valve is opened, the first subsystem is made to reversely circulate, the fan rotates in the reverse direction, at the moment, the first heat exchanger 121 serves as an evaporator, the second heat exchanger 132 serves as a condenser, and the drying medium flows to the first heat exchanger 121 and the second heat exchanger 132.
Example 3
As shown in fig. 2, a drying apparatus having a drying room and a refrigeration system adopts the refrigeration system having a drying function or the operation control method of the above embodiment, and a first heat exchanger 121 and a second heat exchanger 132 are provided in the drying room.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A refrigerating system with drying function is characterized in that: the refrigeration system comprises a first subsystem (1) and a second subsystem (2) which are overlapped together through a condensing evaporator (131), wherein:
the first subsystem (1) comprises a first refrigeration cycle loop formed by sequentially connecting a first compressor (101), a first heat exchanger (121), a first throttling device (104) and evaporator side channels (131c-131d) of a condensation evaporator (131);
the first subsystem also comprisesA second heat exchanger branch (H) connected in series with a second heat exchanger (132), a second throttling device (103) and a second valve (105/106)AF) Said second heat exchanger branch (H)AF) One end of the first throttling device is connected to a first refrigeration cycle loop between the first heat exchanger (121) and the first throttling device (104), the connection point is marked as A, the other end of the first throttling device is connected to the first refrigeration cycle loop between the outlet of an evaporator side channel (131c-131d) of the condensation evaporator (131) and the suction port of the compressor, the connection point is marked as F, and the second throttling device (103) is arranged at the upstream of the second heat exchanger (132) and is closer to the connection point A; a first valve (107/109) disposed in series with said first throttling means (104), condensing evaporator (131) on said first refrigeration cycle loop between said connection points A, F;
the second subsystem (2) comprises a second refrigeration cycle loop formed by sequentially connecting a second compressor (201), a condenser-side channel (131a-131b) of a condensation evaporator (131), a fifth valve (205), a third throttling device (207) and an evaporator (231);
the second subsystem (2) also comprises an auxiliary heating branch (H) which is connected with an auxiliary heater (232), a fourth throttling device (209) and a sixth valve (208) in seriesCE) The auxiliary heating branch (H)CE) One end of the auxiliary heater is connected to a second refrigeration cycle loop between a suction port of the compressor and an inlet of the evaporator (231), the connection point is marked as C, the other end of the auxiliary heater is connected to the second refrigeration cycle loop between an inlet of a fifth valve (205) and outlets of condenser side channels (131a-131b) of the condensing evaporator (131), the connection point is marked as E, and the auxiliary heater (232) is arranged at the downstream of the fourth throttling device and is closer to the connection point C;
the second subsystem (2) also comprises a second connecting branch (H) serially connected with a fourth valve (204)BD) The second connecting branch (H)BD) One end of the second refrigerating circulation loop is connected between the third throttling device (207) and the fifth valve (205), and the connection point is marked as D; the other end is connected to a second refrigeration cycle loop between the discharge port of the compressor and the inlet of the condenser-side channel (131a-131B) of the condenser evaporator (131), and the connection point is marked as B.
2. A refrigeration system having a drying function as set forth in claim 1, wherein: the first refrigeration cycle and the second heat exchanger branch (H)AF) A four-way reversing valve (112) is arranged between the first heat exchanger branch and the second heat exchanger branch, the four-way valve is provided with a first port (112a), a second port (112b), a third port (112c) and a fourth port (112d), wherein the fourth port (112d) and the first port (112a) are connected on a first refrigeration cycle loop, and the second port (112b) and the third port (112c) are connected on a second heat exchanger branch (H)AF) The high-pressure and high-temperature refrigerant discharged from the exhaust port of the first compressor (101) can be selectively flowed to the first heat exchanger (121) or the second heat exchanger (132), when the first compressor exhaust gas flows to the second heat exchanger (132), the second heat exchanger (132) realizes a condenser function, and the first heat exchanger realizes an evaporator function; when the first compressor discharge gas flows to the first heat exchanger (121), the first heat exchanger (121) performs a condenser function, and the second heat exchanger (132) or the evaporator side passages (131c-131d) of the condensing evaporator (131) performs an evaporator function.
3. A refrigeration system having a drying function as set forth in claim 2, wherein: a seventh valve (108) is arranged on the first refrigeration cycle between the connection point A and the first heat exchanger, and/or an eighth valve (109) is arranged on the first refrigeration cycle between the outlet of the evaporator side channel (131c-131d) of the condensation evaporator (131) and the connection point F, and/or a third valve (202) is arranged between the inlet of the condenser side channel (131a-131B) of the condensation evaporator (131) of the second refrigeration cycle and the connection point B.
4. A refrigeration system having a drying function as set forth in claim 3, wherein: the first valve is provided with two, one (106) of which is arranged on a second heat exchanger branch (H) between the second throttling device (103) and the second heat exchanger (132)AF) And a second heat exchanger branch (H) arranged between the second port (112b) of the four-way valve and the connection point FAF) The above.
5. The refrigeration system having drying function according to claim 4, wherein: one or more or all of the first valve to the eighth valve are stop valves.
6. A refrigerating system with drying function as set forth in any one of claims 1 to 5, wherein: the refrigerant of the first subsystem is medium-high temperature refrigerant, and the critical temperature of the refrigerant is not higher than 200 ℃; the refrigerant in the second subsystem is a normal-temperature or low-temperature refrigerant, and the critical temperature of the refrigerant is not higher than 120 ℃.
7. A drying device, it has dry room and refrigerating system, its characterized in that: the refrigeration system with drying function according to any one of claims 1 to 6, wherein the first heat exchanger (121) and the second heat exchanger (132) are arranged in a drying room.
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| CN110207413A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Refrigerating system with drying function, drying device and operation control method |
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| CN110207413A (en) * | 2019-06-25 | 2019-09-06 | 珠海格力电器股份有限公司 | Refrigerating system with drying function, drying device and operation control method |
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