CN205619633U

CN205619633U - Cold storage high -efficient refrigerating system , refrigeration or heat pump device and compressing and condensing unit

Info

Publication number: CN205619633U
Application number: CN201620469635.0U
Authority: CN
Inventors: 赵向辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-19
Filing date: 2016-05-19
Publication date: 2016-10-05
Anticipated expiration: 2026-05-19

Abstract

The utility model discloses a cold storage high -efficient refrigerating system, refrigeration or heat pump device and compressing and condensing unit, refrigerating system contains refrigeration circuit to be provided with the first container that is used for depositing cold storage medium, still be provided with the first subcooling heat exchanger related with first container the refrigerant channel who establishes ties first subcooling heat exchanger between refrigeration circuit's condenser and the throttling arrangement, be provided with with the first cold -storage return circuit of refrigeration circuit sharing compressor, be provided with refrigeration suction pipe, first cold -storage suction pipe and main suction pipe, refrigeration circuit's evaporimeter refrigeration suction pipe main suction pipe the compressor is serial connectivity in proper order, the evaporimeter in first cold -storage return circuit, first cold -storage suction pipe main suction pipe the compressor is serial connectivity in proper order, refrigeration suction pipe goes up to establish ties has check valve or solenoid valve. The utility model discloses a refrigerating system has higher efficiency.

Description

Cold storage high-efficiency refrigerating system, refrigeration or heat pump assembly and Condensing units

Technical field

This utility model relates to refrigerating field, particularly relates to a kind of cold storage high-efficiency refrigerating system, refrigeration or heat pump assembly and pressure Contracting condensation unit.

Background technology

Evaporating temperature when running according to refrigeration system, can be divided into high temperature modification, middle warm type and low form, high temperature modification refrigeration system Evaporating temperature typically at-5 DEG C～25 DEG C, the evaporating temperature of middle warm type typically at-23 DEG C～10 DEG C, the evaporating temperature of low form General at-46 DEG C～-10 DEG C.

Generally, evaporating temperature is the highest, and the efficiency of refrigeration system is the highest, and evaporating temperature is the lowest, and the efficiency of refrigeration system is the lowest.

The refrigeration system in cold chain field is commonly used to cold preservation or freezing, and evaporating temperature is typically below 0 DEG C, inefficient.

At present, China's cold chain entirety energy consumption level is higher, hence it is evident that higher than European and American developed countries.Although cold chain field is energy-conservation permissible Set about from many aspects, but refrigeration system is energy-conservation emphasis all the time.At present, in middle-size and small-size refrigerating refrigeration system, pressure Contracting machine many employings single stage compress, compression ratio is big, and uses capillary tube or expansion valve throttling, and restriction loss is big, causes corresponding Refrigerant system efficiency is relatively low.Although air injection enthalpy-increasing technology, multi-stage compression power-saving technology, cascade refrigeration technology all can improve refrigeration The efficiency of system, but, or because corresponding compressor kind few (even without small dimension), or because system becomes This most high each side reason, causes less application in middle-size and small-size refrigerating refrigeration system.

It addition, in northern China, use in winter air conditioning and heating is inefficient, although air injection enthalpy-increasing technology is wide in art of heat pumps application General, but, it being limited to outdoor environment temperature, efficiency is the highest.

Summary of the invention

The purpose of this utility model is to provide a kind of high-efficiency refrigerating system, highly effective refrigeration or heat pump assembly and Efficient Compression freezing machine Group.

For achieving the above object, this utility model provides a kind of cold storage high-efficiency refrigerating system, comprises refrigerating circuit, described system Cold loop at least by being sequentially connected in series the compressor of connection, condenser, throttling arrangement, vaporizer form；Described refrigeration system is arranged There is container: the first container, the first container is for depositing cool storage medium: the first cool storage medium；Described refrigeration system is provided with supercool Heat exchanger: first crosses cold heat exchanger, and first crosses cold heat exchanger comprises coolant channel, and its coolant channel is connected on described refrigeration Between condenser and the throttling arrangement in loop, first crosses cold heat exchanger uses form A or form B, institute associated with the first container The form A of stating refers to that the first cold heat exchanger excessively is placed in the first container or is placed in (or in wall) on the first wall of a container, described shape Formula B refers to that the first cold heat exchanger excessively also comprises another passage, this channel connection first container；Described refrigeration system is provided with cold-storage Loop: the first cold-storage loop, the first cold-storage loop is at least by being sequentially connected in series the compressor of connection, condenser, throttling arrangement, steaming Send out device composition, the first cold-storage loop and described refrigerating circuit shared compressor；Described refrigeration system is provided with cold-storage aspirating air pipe: First cold-storage aspirating air pipe, is additionally provided with refrigeration aspirating air pipe and main aspirating air pipe, the vaporizer of described refrigerating circuit, described system Enfleurage feed channel, described main aspirating air pipe, described compressor are sequentially connected in series connection, the vaporizer in the first cold-storage loop, the first storage Enfleurage feed channel, described main aspirating air pipe, described compressor are sequentially connected in series connection；It is in series with valve on described refrigeration aspirating air pipe Part, described valve member is check valve or electromagnetic valve.

Preferential, the first cold-storage loop and described refrigerating circuit common condenser；Condenser and the first mistake in described refrigerating circuit Between cold heat exchanger, being in series with throttling arrangement: the first cold-storage throttling arrangement, the first cold-storage throttling arrangement is electric expansion valve, or The two ends of person's the first cold-storage throttling arrangement are parallel with electromagnetic valve；First cold-storage loop is at least by the described compression being sequentially connected in series connection Machine, described condenser, the first cold-storage throttling arrangement, described cold heat exchanger, the first cold-storage aspirating air pipe, described main suction nozzle excessively Road forms, and the first cold-storage aspirating air pipe is also in series with electromagnetic valve, and this electromagnetic valve and described valve member can be same two-position three ways Electromagnetic valve.

Preferential, the first cold-storage loop and described refrigerating circuit common condenser；Described refrigeration system is provided with cold-storage evaporator: First cold-storage evaporator, the first cold-storage evaporator comprises coolant channel, and the first cold-storage evaporator employing associates with the first container Form A or form D, described form A refers to that the first cold-storage evaporator is placed in the first container or is placed on the first wall of a container (or in wall), described form D refers to that the first cold-storage evaporator also comprises another passage, this channel connection first container；Institute State refrigeration system and be additionally provided with throttling arrangement: the first cold-storage throttling arrangement, the first cold-storage loop is at least by being sequentially connected in series described in connection Compressor, described condenser, the first cold-storage throttling arrangement, the first cold-storage evaporator, the first cold-storage aspirating air pipe, described main suction Feed channel forms；First cold heat exchanger and the first cold-storage evaporator excessively is separate, or the first cold heat exchanger excessively is the first cold-storage A part for vaporizer, or the first cold-storage evaporator be first cross cold heat exchanger a part.

Preferential, on the connecting pipe between the compressor and condenser of described refrigerating circuit, bypass has refrigeration described in pipeline communication The vaporizer in loop, this by-pass line is in series with electromagnetic valve.

Preferential, the connecting pipe between the compressor and condenser of described refrigerating circuit is provided with two-position four-way valve, these two Cross valve is an electromagnetic valve, has c mouth, d mouth, e mouth and s mouth totally four control mouths, and has two operating positions, When this two-position four-way valve is in first operating position, c mouth is connected with d mouth, and e mouth is connected with s mouth, these two four When logical valve is in second operating position, c mouth is connected with s mouth, and d mouth is connected with e mouth；The aerofluxus of described compressor Mouth is connected with the d mouth of this two-position four-way valve；The low pressure air suction mouth of described compressor is connected with the s mouth of this two-position four-way valve； Described condenser is connected with the c mouth of this two-position four-way valve；Described main aspirating air pipe is connected with the e mouth of this two-position four-way valve.

Preferential, described refrigeration system is additionally provided with container: second container, and second container is for depositing cool storage medium: the second cold-storage Medium；Described refrigeration system was additionally provided with cold heat exchanger: the second mistake cold heat exchanger, the second mistake cold heat exchanger comprises cold-producing medium and leads to Road, its coolant channel is connected on first and crosses between cold heat exchanger and the throttling arrangement of described refrigerating circuit, and second crosses cold heat exchanger Use form A that associates with second container or form B, described form A refer to the second mistake cold heat exchanger be placed in second container or Person is placed on the wall of second container (or in wall), and described form B refers to that the second cold heat exchanger excessively also comprises another passage, and this leads to Road connection second container；Described refrigeration system is additionally provided with cold-storage loop: the second cold-storage loop, the second cold-storage loop is at least by successively The compressor of serial communication, condenser, throttling arrangement, vaporizer form, and the second cold-storage loop also shares with described refrigerating circuit Compressor.

For achieving the above object, this utility model provides a kind of highly effective refrigeration or heat pump assembly, comprises described in any of the above-described item Refrigeration system.

For achieving the above object, this utility model provides a kind of Efficient Compression condensation unit, comprises the compression being sequentially connected in series connection Machine, condenser, reservoir and mistake cold heat exchanger, be provided with the described feed pipe crossing cold heat exchanger of connection, be additionally provided with connection The suction nozzle of described compressor low pressure air suction mouth；Described cold heat exchanger of crossing comprises passage one and passage two, and its passage one connects described Reservoir and described feed pipe；Being serially connected with valve member on described suction nozzle, described valve member is check valve or electromagnetic valve, described feed flow On pipe, bypass has valve member described in pipeline communication and the suction nozzle between described compressor, and this by-pass line is in series with electromagnetic valve, should Electromagnetic valve and described valve member can be same two-position three way magnetic valves；At described reservoir and the described passage one crossing cold heat exchanger Between be serially connected with throttling arrangement, described throttling arrangement is electric expansion valve, or the two ends of described throttling arrangement are parallel with electromagnetism Valve.

For achieving the above object, this utility model provides a kind of Efficient Compression condensation unit, comprises compressor and condenser, institute The entrance of the air vent and described condenser of stating compressor is connected, and is provided with the feed pipe connecting described condensator outlet, also sets It is equipped with the suction nozzle connecting described compressor low pressure air suction mouth, described suction nozzle is serially connected with valve member (81), described valve member ( 81) it is check valve or electromagnetic valve；Described Condensing units was provided with cold heat exchanger, and described cold heat exchanger of crossing comprises two Passage: passage one and passage two, its passage one is serially connected in described feed pipe；Described Condensing units is provided with throttling dress Putting, be additionally provided with vaporizer, described vaporizer comprises two passages: passage one and passage two；Described condenser, described throttling Device, the passage one of described vaporizer, described compressor are sequentially connected in series connection.

For achieving the above object, this utility model provides a kind of cold storage Efficient Compression condensation unit, comprises the compression being connected Machine and condenser, be provided with the supply opening connecting described condensator outlet, be additionally provided with air entry；Described Condensing units sets It is equipped with container: the first container, the first container is for depositing cool storage medium: the first cool storage medium；Described Condensing units is arranged There is cold heat exchanger: first crosses cold heat exchanger, and first crosses cold heat exchanger comprises coolant channel, and its coolant channel is serially connected in institute Stating between condenser and described supply opening, first crosses cold heat exchanger uses form A or form B associated with the first container, described Form A refers to that the first cold heat exchanger excessively is placed in the first container or is placed in (or in wall) on the first wall of a container, described form B refers to that the first cold heat exchanger excessively also comprises another passage, this channel connection first container；Described Condensing units is provided with storage Cold vaporizer: the first cold-storage evaporator, the first cold-storage evaporator comprises coolant channel, and uses the shape associated with the first container Formula C or form D, described form A refers to that the first cold-storage evaporator is placed in the first container or is placed on the first wall of a container (or in wall), described form D refers to that the first cold-storage evaporator also comprises another passage, this channel connection first container；Described Condensing units is provided with cold-storage aspirating air pipe: the first cold-storage aspirating air pipe, is additionally provided with refrigeration aspirating air pipe and main suction nozzle Road, the first cold-storage evaporator connects the low pressure air suction of described compressor through the first cold-storage aspirating air pipe with described main aspirating air pipe successively Mouthful, the air entry of described Condensing units connects described compressor through described refrigeration aspirating air pipe with described main aspirating air pipe successively Low pressure air suction mouth, described refrigeration aspirating air pipe is in series with valve member (81), described valve member (81) is check valve or electromagnetism Valve；Described Condensing units is provided with cold-storage loop: the first cold-storage loop, is additionally provided with throttling arrangement: the first cold-storage throttling Device, the first cold-storage loop at least by be sequentially connected in series the described compressor of connection, described condenser, the first cold-storage throttling arrangement, First cold-storage evaporator composition；It can be same heat exchanger that first cold-storage evaporator and first crosses cold heat exchanger, it is also possible to be phase The most independent heat exchanger, or the first cold-storage evaporator be first cross cold heat exchanger a part, or first cross cold heat exchanger be A part for first cold-storage evaporator.

Based on technique scheme, refrigeration system of the present utility model, refrigeration or heat pump assembly and Condensing units are respectively provided with relatively High Energy Efficiency Ratio.

Accompanying drawing explanation

Fig. 1 is the theory of constitution schematic diagram of this utility model refrigeration system first embodiment.

Fig. 2 is the theory of constitution schematic diagram of this utility model refrigeration system the second embodiment.

Fig. 3 is the theory of constitution schematic diagram of this utility model refrigeration system the 3rd embodiment.

Fig. 4 is the theory of constitution schematic diagram of this utility model refrigeration system the 4th embodiment.

Fig. 5 is the theory of constitution schematic diagram of this utility model refrigeration system the 5th embodiment.

Fig. 6 is the theory of constitution schematic diagram of this utility model refrigeration system sixth embodiment.

Fig. 7 is the theory of constitution schematic diagram of this utility model refrigeration system the 7th embodiment.

Fig. 8 is the theory of constitution schematic diagram of this utility model refrigeration system the 8th embodiment.

Fig. 9 is the theory of constitution schematic diagram of this utility model refrigeration system the 9th embodiment.

Figure 10 is the theory of constitution schematic diagram of this utility model refrigeration system the tenth embodiment.

Figure 11 is the theory of constitution schematic diagram of this utility model refrigeration system the 11st embodiment.

Figure 12 is the theory of constitution schematic diagram of this utility model refrigeration system the 12nd embodiment.

Figure 13 is the theory of constitution schematic diagram of this utility model refrigeration system the 13rd embodiment.

Figure 14 is the theory of constitution schematic diagram of this utility model refrigeration system the 14th embodiment.

Figure 15 is the theory of constitution schematic diagram of this utility model refrigeration system the 15th embodiment.

Figure 16 is the theory of constitution schematic diagram of this utility model refrigeration system the 16th embodiment.

Figure 17 is the theory of constitution schematic diagram of this utility model refrigeration system the 17th embodiment.

Detailed description of the invention

Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.

As it is shown in figure 1, be the theory of constitution schematic diagram of this utility model refrigeration system first embodiment.In the present embodiment, pressure Contracting machine 11, condenser 21, reservoir 31, heating power expansion valve 41, heat exchange coil 51, heating power expansion valve 61, vaporizer 71, check valve 81 is sequentially connected in series, and the outlet of check valve 81 connects the air entry of compressor 11；At heating power expansion valve 41 Two ends be parallel with two-way electromagnetic valve 85；Being provided with two-way electromagnetic valve 83, its one end is connected to heat exchange coil 51 and heating power expansion valve On pipeline between 61, the other end is connected on the pipeline between check valve 81 and compressor 11；It is additionally provided with container 00, This uses cold-storage groove, and heat exchange coil 51 is placed in cold-storage groove 00, and (frozen water mixes also to have deposited cool storage medium 04 in cold-storage groove 00 Compound).

Thus, compressor 11, condenser 21, reservoir 31, two-way electromagnetic valve 85, heat exchange coil 51, heating power expansion valve 61, vaporizer 71, check valve 81 are sequentially connected in series, and form refrigerating circuit, it is possible to realize supercool kind of refrigeration cycle；Compression Machine 11, condenser 21, reservoir 31, heating power expansion valve 41, heat exchange coil 51, two-way electromagnetic valve 83 company of being sequentially connected in series Connect, form cold-storage loop, it is possible to realize cold-storage kind of refrigeration cycle.When compressor 11 runs, close two-way electromagnetic valve 83 and beat Opening two-way electromagnetic valve 85, the most supercool kind of refrigeration cycle is run；Close two-way electromagnetic valve 85 and open two-way electromagnetic valve 83, then cold-storage Kind of refrigeration cycle is run.

This is a refrigeration system can applied on small-sized low-temperature cold store, in the present embodiment, sets low-temperature cold store temperature For-20 DEG C, return difference is 2 DEG C, say, that when cold storehouse temperature is more than or equal to-18 DEG C, it is desirable to vaporizer 71 provides cold Amount, when cold storehouse temperature is less than or equal to-20 DEG C, it is desirable to vaporizer 71 stops providing cold.Storehouse temperature usually-20 DEG C ～-18 DEG C, the evaporating temperature of the most above-mentioned supercool kind of refrigeration cycle substantially-27 DEG C～-35 DEG C.

In supercool kind of refrigeration cycle, heat exchange coil 51 is subcooler, and frozen water 04 provides cold for it；In cold-storage kind of refrigeration cycle, change Hot coil 51 is vaporizer, provides cold for frozen water 04.The cold-storage temperature of frozen water 04 is 0 DEG C, then cold-storage kind of refrigeration cycle Evaporating temperature substantially-12 DEG C～-7 DEG C, the evaporating temperature of cold-storage kind of refrigeration cycle is apparently higher than supercool kind of refrigeration cycle, so that whole Individual refrigeration system has higher efficiency, and its effect is similar to air injection enthalpy-increasing technology or two stages of compression power-saving technology.

Owing to the temperature and pressure in vaporizer 71 is relatively low, so arranging of check valve 81 is necessary, cold-storage kind of refrigeration cycle is transported During row, check valve 81 can stop cold-producing medium to enter vaporizer 71 after electromagnetic valve 83 exports, and becomes in vaporizer 71 Liquid deposition, is so likely to make cold-storage kind of refrigeration cycle effectively not carry out, and can affect freezer temperature by vaporizer 71 Degree.

In the present embodiment, when supercool kind of refrigeration cycle is run, if the cold-producing medium before Jie Liu does not has degree of supercooling, its refrigerating efficiency and system Cold is all significantly lower than cold-storage kind of refrigeration cycle.In actual application, in order to reduce cost, compact conformation, the volume of cold-storage groove 00 The smaller the better.So, when freezer longer period of time requires refrigeration always, if the ice content of frozen water 04 or temperature are not added with Control, then in supercool kind of refrigeration cycle, the cold-producing medium before throttling does not has degree of supercooling soon.Now, although freezer requires refrigeration, But, if stopping supercool kind of refrigeration cycle and running cold-storage kind of refrigeration cycle, ice content and water temperature to frozen water 04 are controlled by, So system can stablize the state in intermittent: cold-storage kind of refrigeration cycle---supercool kind of refrigeration cycle---cold-storage kind of refrigeration cycle---mistake Cold kind of refrigeration cycle, and after the cold that cold-storage kind of refrigeration cycle is produced is stored in frozen water 04, further through increasing supercool kind of refrigeration cycle Degree of supercooling is converted into the cold being supplied to freezer, and so, the cold provided to freezer in the system unit time adds, refrigeration effect Rate also improves.

For convenience of description, here setting several concrete condition, condition one is that the temperature of frozen water 04 is more than 5 DEG C, now The pressure of inspiration(Pi) that requirement starts to frozen water 04 provides cold, condition two to be cold-storage kind of refrigeration cycle (uses refrigeration less than 3Bar at this Agent R404A, evaporating temperature corresponding to gauge pressure 3Bar is-12 DEG C, and now icing rate is typically not less than 50%), now require to stop Only providing cold to frozen water 04, condition three, now requires to start to provide cold to freezer more than or equal to-18 DEG C for temperature of ice house Amount, condition four, now requires to stop providing cold to freezer less than or equal to-20 DEG C for temperature of ice house.

Concrete progress control method can be:

When supercool kind of refrigeration cycle is run, if above-mentioned condition one meets, the most preferentially run cold-storage kind of refrigeration cycle, until above-mentioned condition two Meet, supercool kind of refrigeration cycle of reruning；When above-mentioned condition one and above-mentioned condition three all meet (powering on the most for the first time), preferentially transport Row cold-storage kind of refrigeration cycle, until above-mentioned condition two meets, supercool kind of refrigeration cycle of reruning；When above-mentioned condition four meets, fortune at once Row cold-storage kind of refrigeration cycle, until above-mentioned condition two meets.

Above-mentioned control method is proper for the situation that cold-storage groove 00 is particularly compact, further, if cold-storage groove 00 is permissible More greatly a bit, then, a condition five can be set up: after cold-storage kind of refrigeration cycle is run, open from temperature≤5 DEG C of frozen water 04 Beginning, the time of cold-storage kind of refrigeration cycle continuous service reaches 5 minutes.When condition five meets, due to cold-storage groove 00 volume relatively Greatly, stored frozen water 04 is more, and the icing rate of frozen water 04 is also remote less than 50%, but the cold now accumulated is enough Supercool kind of refrigeration cycle is run 20 minutes.At this moment concrete control method can be: when supercool kind of refrigeration cycle is run, if above-mentioned bar Part one meets, and the most preferentially runs cold-storage kind of refrigeration cycle, until above-mentioned condition two or above-mentioned condition five meet, and supercool refrigeration of reruning Circulation；When above-mentioned condition one and above-mentioned condition three all meet, preferential operation cold-storage kind of refrigeration cycle, until above-mentioned condition two or above-mentioned Condition five meets, supercool kind of refrigeration cycle of reruning.

Further, when above-mentioned condition four meets, run cold-storage kind of refrigeration cycle at once, until above-mentioned condition two or above-mentioned condition five Meeting, if the most above-mentioned condition five meets, and above-mentioned condition two and above-mentioned condition three are all unsatisfactory for, then continue to run with cold-storage system SAPMAC method, until above-mentioned condition two or above-mentioned condition three meet.

Further, it is also possible to be set with condition six: between time 10:00 at night to morning 6:00, because during this period of time The electricity charge are relatively low or ambient temperature is relatively low, and at this moment, the control method that the preceding paragraph can be fallen is adjusted to: above-mentioned condition four meets Time, run cold-storage kind of refrigeration cycle, until above-mentioned condition two or above-mentioned condition five meet；If the most above-mentioned condition five meet and on State condition two to be unsatisfactory for, and above-mentioned condition three and above-mentioned condition six are all unsatisfactory for, then shut down；If the most above-mentioned condition five is full Sufficient and above-mentioned condition two is unsatisfactory for, and above-mentioned condition three is unsatisfactory for and above-mentioned condition six meets, then continue to run with cold-storage refrigeration and follow Ring, until above-mentioned condition two meets or above-mentioned condition three meets or above-mentioned condition six is unsatisfactory for.

In Fig. 1 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system first embodiment.

As in figure 2 it is shown, be the theory of constitution schematic diagram of this utility model refrigeration system the second embodiment.In the present embodiment, pressure Contracting machine 11, condenser 21, reservoir 31 are sequentially connected in series, and the outlet of reservoir is divided into two-way, the first via to sequentially pass through Sub-cooling coil 51, two-way electromagnetic valve 82, heating power expansion valve 61, vaporizer 71, check valve 81, reconnect compressor 11 Air entry, the second tunnel sequentially passes through two-way electromagnetic valve 84, heating power expansion valve 41, evaporation coil 52, reconnects compressor 11 Air entry.It is additionally provided with cold-storage groove 00, evaporation coil 51 and sub-cooling coil 52 to be placed in cold-storage groove 00, cold-storage groove 00 In be also equipped with cool storage medium 04 (mixture of ice and water).

In the present embodiment, opening electromagnetic valve 84 and close electromagnetic valve 82, when compressor 11 runs, cold-producing medium is from compressor Condenser 21, reservoir 31, two-way electromagnetic valve 84, heating power expansion valve 41, evaporation coil 52 is sequentially passed through after 11 outputs, Returning compressor 11, form cold-storage kind of refrigeration cycle, in cold-storage kind of refrigeration cycle, evaporation coil 52 is vaporizer；Close electromagnetic valve 84 and open electromagnetic valve 82, when compressor 11 runs, cold-producing medium sequentially passes through condenser 21, storage after compressor 11 exports Liquid device 31, sub-cooling coil 51, two-way electromagnetic valve 82, heating power expansion valve 61, vaporizer 71, check valve 81, return pressure Contracting machine 11, forms supercool kind of refrigeration cycle, and in supercool kind of refrigeration cycle, sub-cooling coil 52 is subcooler.Cold-storage kind of refrigeration cycle is produced Cold passes to the frozen water 04 in cold-storage groove 00, when supercool kind of refrigeration cycle is carried out, in frozen water 04 by evaporation coil 52 Cold enters supercool kind of refrigeration cycle by sub-cooling coil 51, increases the degree of supercooling before cold-producing medium throttling.The control that system is run Method is referred to first embodiment.

This is also a refrigeration system can applied on small-sized low-temperature cold store, sets low-temperature cold store temperature in the present embodiment For-18 DEG C, the evaporating temperature of the most supercool kind of refrigeration cycle substantially-33 DEG C～-25 DEG C.The cold-storage temperature of frozen water 04 is 0 DEG C, then The evaporating temperature of cold-storage kind of refrigeration cycle substantially-12 DEG C～-7 DEG C, the evaporating temperature of cold-storage kind of refrigeration cycle is followed apparently higher than supercool refrigeration Ring, the most whole refrigeration system has higher Energy Efficiency Ratio.

In Fig. 2 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the second embodiment.

As it is shown on figure 3, be the theory of constitution schematic diagram of this utility model refrigeration system the 3rd embodiment.The present embodiment and second is in fact Executing example ratio relatively similar, difference is:

1, in the present embodiment, valve member 81 uses two-way electromagnetic valve；When supercool kind of refrigeration cycle is run, two-way electromagnetic valve 81 dozens Opening, when cold-storage kind of refrigeration cycle is run, two-way electromagnetic valve 81 is closed；

2, in the present embodiment, the vaporizer 52 of cold-storage kind of refrigeration cycle uses indirect heat exchange form, and concrete condition is: cold-storage evaporates Device 52 is plate type heat exchanger, and its refrigerant side is placed in the loop of cold-storage kind of refrigeration cycle, its heat exchanging fluid side and cold-storage groove 00, Circulating pump 02 is sequentially connected in series connection by pipeline and forms loop；Circulating pump 02 is along with cold-storage kind of refrigeration cycle is run together or stops Run.

In Fig. 3 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 3rd embodiment.

As shown in Figure 4, for the theory of constitution schematic diagram of this utility model refrigeration system the 4th embodiment.The present embodiment and second is in fact Executing example ratio relatively similar, difference is:

2, in the present embodiment, the cold heat exchanger 51 of crossing of supercool kind of refrigeration cycle uses indirect heat exchange form, and concrete condition is: supercool Heat exchanger 51 is plate type heat exchanger, and its refrigerant side is placed in the loop of supercool kind of refrigeration cycle, its heat exchanging fluid side and cold-storage groove 00, circulating pump 01 is sequentially connected in series connection by pipeline and forms loop；Circulating pump 01 run together along with supercool kind of refrigeration cycle or Out of service.

In Fig. 4 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 4th embodiment.

As it is shown in figure 5, be the theory of constitution schematic diagram of this utility model refrigeration system the 5th embodiment.The present embodiment and second is in fact Executing example ratio relatively similar, difference is:

In the present embodiment, the vaporizer 52 crossing cold heat exchanger 51 and cold-storage kind of refrigeration cycle of supercool kind of refrigeration cycle all uses and indirectly changes Hot form, concrete condition is: cross cold heat exchanger 51 and cold-storage evaporator 52 is plate type heat exchanger, cross cold heat exchanger 51 Refrigerant side is placed in the loop of supercool kind of refrigeration cycle, and the refrigerant side of cold-storage evaporator 52 is placed in the loop of cold-storage kind of refrigeration cycle In, the heat exchanging fluid side of cold heat exchanger 51, the heat exchanging fluid side of cold-storage evaporator 52, cold-storage groove 00, circulating pump 01 excessively leads to Piping is sequentially connected in series connection and forms loop；When supercool kind of refrigeration cycle is run, circulating pump 01 runs together, and cold-storage refrigeration is followed During inscription of loop, circulating pump 01 runs the most together.

In Fig. 5 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 5th embodiment.

As shown in Figure 6, for the theory of constitution schematic diagram of this utility model refrigeration system sixth embodiment.The present embodiment and the 5th is in fact Executing example ratio relatively similar, difference is:

2, in the present embodiment, the heat exchanging fluid side of cold heat exchanger 51, cold-storage groove 00, circulating pump 01 are crossed by pipeline successively Serial communication also forms a loop, and the heat exchanging fluid side of cold-storage evaporator 52, cold-storage groove 00, circulating pump 02 pass through pipeline It is sequentially connected in series connection and forms another loop；Circulating pump 01 runs or out of service together along with supercool kind of refrigeration cycle, circulation Pump 02 runs or out of service together along with cold-storage kind of refrigeration cycle.

In Fig. 6 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system sixth embodiment.

As it is shown in fig. 7, be the theory of constitution schematic diagram of this utility model refrigeration system the 7th embodiment.The present embodiment and first is in fact Executing example ratio relatively similar, difference is:

1, heat exchanger 51 uses indirect heat exchange form, and concrete condition is: heat exchanger 51 is plate type heat exchanger, its refrigerant side Being placed in refrigerating circuit, its heat exchanging fluid side and cold-storage groove 00, circulating pump 01 are sequentially connected in series by pipeline and connect and formed back Road, when supercool kind of refrigeration cycle is run, circulating pump 01 runs together, and when cold-storage kind of refrigeration cycle is run, circulating pump 01 also one starts shipment OK；

2, the cool storage medium 04 in cold-storage groove 00 is packaged type plate ice, and its gap is full of glycol water, and circulating pump 01 is transported During row, glycol water is driven to sequentially pass through heat exchanging fluid side and the cold-storage groove 00 of plate type heat exchanger 51.

In Fig. 7 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 7th embodiment；In Fig. 7, in dotted line frame, shown part removes cold-storage groove 00 therein, cold-storage After medium 04, circulating pump 01, it is the theory of constitution schematic diagram of this utility model another embodiment of Condensing units, still Corresponding this utility model refrigeration system the 7th embodiment；

As shown in Figure 8, for the theory of constitution schematic diagram of this utility model refrigeration system the 8th embodiment.In the present embodiment, compression Machine 11 is air injection enthalpy-increasing compressor, has air vent, air entry and gas supplementing opening, the air vent of compressor 11, condenser 21, reservoir 31 is sequentially connected in series connection by pipeline, and the outlet of reservoir 31 is divided into two-way: a road sequentially passes through thermal expansion Valve 60, plate type heat exchanger 70 primary side after connect compressor 11 gas supplementing opening, another road sequentially passes through plate type heat exchanger 70 Secondary side, heating power expansion valve 41, heat exchange coil 51, two-way electromagnetic valve 82, heating power expansion valve 61, after vaporizer 71, Connect the b mouth of two-position three way magnetic valve 81；The air entry of a mouth connection compressor 11 of two-position three way magnetic valve 81, two The c mouth of three-way magnetic valve 81 is by the connection pipeline between pipeline communication plate type heat exchanger 51 and two-way electromagnetic valve 82；Heating power The two ends of expansion valve 41 are parallel with two-way electromagnetic valve 85；Being provided with cold-storage groove 00, heat exchange coil 51 is placed in cold-storage groove 00, Cold-storage groove 00 has also been deposited ethylene glycol 04.

Two-position three way magnetic valve 81 has a mouth, b mouth and three, c mouth and controls mouth, and has two operating positions, at this valve When first operating position, its b mouth connects with a mouth, and c mouth does not connects with a mouth, b mouth, and this valve is in second During operating position, its c mouth connects with a mouth, and b mouth does not connects with a mouth, c mouth.

Thus, the air vent of compressor 11, condenser 21, reservoir 31, heating power expansion valve 60, plate type heat exchanger 70 Primary side, the gas supplementing opening of compressor 11 are sequentially connected in series connection, form subsidiary loop, it is possible to realize auxiliary cooling circulation；Pressure Contracting machine 11, condenser 21, reservoir 31, the secondary side of plate type heat exchanger 70, two-way electromagnetic valve 85, heat exchange coil 51, Two-way electromagnetic valve 82, heating power expansion valve 61, vaporizer 71, the b mouth of two-position three way magnetic valve 81, two-position three way magnetic valve A mouth, the air entry of compressor 11 of 81 are sequentially connected in series connection, form refrigerating circuit, it is possible to realize supercool kind of refrigeration cycle； The air vent of compressor 11, condenser 21, reservoir 31, heating power expansion valve 41, heat exchange coil 51, two-way threeway electromagnetism The c mouth of valve 81, a mouth of two-position three way magnetic valve 81, the air entry of compressor 11 are sequentially connected in series connection, form cold-storage and return Road, it is possible to realize cold-storage kind of refrigeration cycle.When compressor 11 runs, close two-way electromagnetic valve 82 and 85, and make two three Three-way electromagnetic valve 81 is in above-mentioned second operating position, then auxiliary cooling circulation runs together with cold-storage kind of refrigeration cycle；Open two Three-way electromagnetic valve 82 and 85, and make two-position three way magnetic valve 81 be in first operating position, then auxiliary cooling circulation is with supercool Kind of refrigeration cycle is run together.

This is a refrigeration system can applied on small-sized low-temperature cold store, in the present embodiment, sets low-temperature cold store temperature For-25 DEG C, the evaporating temperature of the most above-mentioned supercool kind of refrigeration cycle substantially-30 DEG C～-35 DEG C.

Obviously, when auxiliary cooling circulation runs together with cold-storage kind of refrigeration cycle, by plate type heat exchanger 70, auxiliary cooling circulates There is provided cold for the cold-producing medium before throttling in cold-storage kind of refrigeration cycle, improve the efficiency that cold-storage kind of refrigeration cycle is run, heat exchange coil 51 is vaporizer, provides cold for ethylene glycol 04, and the cold-storage temperature of ethylene glycol 04 is about-12 DEG C, then cold-storage kind of refrigeration cycle Evaporating temperature be about-20 DEG C.When auxiliary cooling circulation runs together with supercool kind of refrigeration cycle, the refrigeration in supercool kind of refrigeration cycle Agent provides cold through the secondary side of plate type heat exchanger 70, auxiliary cooling circulation for it, it is achieved that the first order is supercool, supercool Cold-producing medium in kind of refrigeration cycle is when heat exchange coil 51, and ethylene glycol 04 provides cold for it, it is achieved that the second level is supercool.Store The evaporating temperature of cold kind of refrigeration cycle is apparently higher than supercool kind of refrigeration cycle, so that whole system has higher efficiency.

The progress control method of the present embodiment is referred to first embodiment, it should be added that, compressor 11 is shut down Before, two-way electromagnetic valve 82 can be closed, and make two-position three way magnetic valve 81 be in above-mentioned first operating position, evacuate as far as possible After cold-producing medium in vaporizer 71, compressor 11 is shut down again, and still closes two-way electromagnetic valve 82, and makes two-position three-way electromagnetic Valve 81 is in above-mentioned first operating position, migrates such that it is able to reduce cold-producing medium lubricating oil in compressor 11 when shutting down.

In Fig. 8 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 8th embodiment.

As it is shown in figure 9, be the theory of constitution schematic diagram of this utility model refrigeration system the 9th embodiment.In the present embodiment, pressure Contracting machine 11, condenser 21, reservoir 31, two-way electromagnetic valve 84, heating power expansion valve 41 are sequentially connected in series connection, thermal expansion The outlet of valve 41 is divided into two-way: the first via sequentially passes through separatory capillary tube 42, heat exchange coil 52, check valve 89, the second tunnel Sequentially pass through separatory capillary tube 43, check valve 90, heat exchange coil 51, in the first via in the outlet of check valve 89 and the second tunnel The outlet of heat exchange coil 51 pools together, and is divided into the most again two-way: the first via connects the c mouth of two-position three way magnetic valve 81, Second tunnel connects the b mouth of two-position three way magnetic valve 81, two-position three way electricity after sequentially passing through heating power expansion valve 61, vaporizer 71 The air entry of a mouth connection compressor 11 of magnet valve 81.It addition, the connection between reservoir 31 and two-way electromagnetic valve 84 Bypassing a pipeline on pipeline, this by-pass line connects between check valve 90 and heat exchange coil 51 after two-way electromagnetic valve 85 Connection pipeline.Being additionally provided with cold-storage groove 00, wherein deposited frozen water 04, heat exchange coil 51 and 52 is placed in cold-storage groove 00 In.

In the present embodiment, open two-way electromagnetic valve 84, close two-way electromagnetic valve 85, and make two-position three way magnetic valve 81 be in Above-mentioned second operating position, then, when compressor 11 operates, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, reservoir 31, two-way electromagnetic valve 84, heating power expansion valve 41, be then divided into two-way, and the first via sequentially passes through separatory capillary Pipe 42, heat exchange coil 52, check valve 89, the second tunnel sequentially passes through separatory capillary tube 43, check valve 90, heat exchange coil 51, then two-way pools together, and sequentially passes through c mouth and a mouth of two-position three way magnetic valve 81, returns to the suction of compressor 11 QI KOU, forms cold-storage kind of refrigeration cycle.In cold-storage kind of refrigeration cycle, heat exchange coil 51 and 52 is all vaporizer, carries for frozen water 04 Semen donors.

In the present embodiment, close two-way electromagnetic valve 84, open two-way electromagnetic valve 85, and make two-position three way magnetic valve 81 be in Above-mentioned first operating position, then, when compressor 11 operates, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, reservoir 31, two-way electromagnetic valve 85, heat exchange coil 51, then through the c mouth of two-position three way magnetic valve 81 and a mouth, Return to the air entry of compressor 11, form supercool kind of refrigeration cycle.In supercool kind of refrigeration cycle, heat exchange coil 51 is subcooler, Frozen water 04 provides cold for it.

The present embodiment is particular in that, the subcooler in supercool kind of refrigeration cycle is a part for vaporizer in cold-storage kind of refrigeration cycle.

This is also a refrigeration system can applied on small-sized low-temperature cold store, sets low-temperature cold store temperature in the present embodiment For-18 DEG C, the evaporating temperature of the most above-mentioned supercool kind of refrigeration cycle substantially-33 DEG C～-25 DEG C.The cold-storage temperature of frozen water 04 is 0 Degree, the evaporating temperature of the most above-mentioned cold-storage kind of refrigeration cycle substantially-12 DEG C～-7 DEG C, the evaporating temperature of cold-storage kind of refrigeration cycle apparently higher than Supercool kind of refrigeration cycle, the most whole refrigeration system has higher Energy Efficiency Ratio.It is real that the control method that system is run is referred to first Execute example.

In Fig. 9 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, right Answer this utility model refrigeration system the 9th embodiment.

As shown in Figure 10, for the theory of constitution schematic diagram of this utility model refrigeration system the tenth embodiment.The present embodiment and second Embodiment ratio is relatively similar, and difference is:

1, the present embodiment do not has reservoir；

2, in the present embodiment, throttling arrangement 41 is electric expansion valve, replaces the two-way electromagnetic valve 84 in the second embodiment and heating power Expansion valve 41；

3, in the present embodiment, throttling arrangement 61 is electric expansion valve, replaces the two-way electromagnetic valve 82 in the second embodiment and heating power Expansion valve 61.

In Figure 10 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, Corresponding this utility model refrigeration system the tenth embodiment.

As shown in figure 11, for the theory of constitution schematic diagram of this utility model refrigeration system the 11st embodiment.The present embodiment and Two embodiment ratios are relatively similar, and difference is:

1, the present embodiment do not has reservoir；

2, in the present embodiment, throttling arrangement 41 is capillary tube, replaces the heating power expansion valve 41 in the second embodiment；

3, in the present embodiment, throttling arrangement 61 is capillary tube, replaces the heating power expansion valve 61 in the second embodiment.

The refrigeration system of the present embodiment can apply on low-temp. refrigerator, sets the temperature of low-temp. refrigerator at this as-18 DEG C, then mistake The evaporating temperature of cold kind of refrigeration cycle substantially-33 DEG C～-25 DEG C.The cold-storage temperature of frozen water 04 is 0 DEG C, then cold-storage kind of refrigeration cycle Evaporating temperature substantially-12 DEG C～-7 DEG C, the evaporating temperature of cold-storage kind of refrigeration cycle is apparently higher than supercool kind of refrigeration cycle, the most whole system Cooling system has higher Energy Efficiency Ratio.

The progress control method of the present embodiment is referred to first embodiment, simply, in the present embodiment, it is desirable to stop to frozen water 04 provides the condition two of cold can be set as: after cold-storage kind of refrigeration cycle is run, from the beginning of temperature≤5 DEG C of frozen water 04, store The time of cold kind of refrigeration cycle continuous service reaches 10 minutes.Certainly, in cold-storage groove 00, the frozen water 04 of suitable portions to be had is deposited Put, can condition two here when being just met for, its icing rate is 40%～70%.

As shown in figure 12, for the theory of constitution schematic diagram of this utility model refrigeration system the 12nd embodiment.The present embodiment and 11 embodiment ratios are relatively similar, and difference is: in the present embodiment, are additionally provided with capillary tube 62 and vaporizer 72, and two Being arranged in series two-position three way magnetic valve 94 on connecting line between three-way electromagnetic valve 82 and capillary tube 61, this valve has a Mouthful, b mouth and three, c mouth control mouth, and there are two operating positions, when this valve is in first operating position, its b mouth and A mouth connects, and c mouth does not connects with a mouth, b mouth, and when this valve is in second operating position, its c mouth and a mouth are even Lead to, and b mouth does not connects with a mouth, c mouth.The a mouth of two-position three way magnetic valve 94 connects with two-way electromagnetic valve 82, two The b mouth of three-way magnetic valve 94 connects with capillary tube 61, and the c mouth of two-position three way magnetic valve sequentially passes through capillary tube 62 and evaporation The connecting line between capillary tube 61 and vaporizer 71 is connected after device 72.

In the present embodiment, close two-way electromagnetic valve 82 and open two-way electromagnetic valve 84, when compressor 11 runs, cold-producing medium After compressor 11 exports, after sequentially passing through condenser 21, two-way electromagnetic valve 84, capillary tube 41, heat exchange coil 52, again Return to compressor 11, thus form cold-storage kind of refrigeration cycle；Close two-way electromagnetic valve 84, open two-way electromagnetic valve 82, and make two Position-3-way solenoid valve 94 is in above-mentioned first operating position, then when compressor 11 runs, cold-producing medium is defeated from compressor 11 After going out, sequentially pass through condenser 21, heat exchange coil 51, two-way electromagnetic valve 82, a mouth of two-position three way magnetic valve 94 and b Mouth, capillary tube 61, vaporizer 71, check valve 81, be returned to compressor 11, thus form first supercool kind of refrigeration cycle； Close two-way electromagnetic valve 84, open two-way electromagnetic valve 82, and make two-position three way magnetic valve 94 be in above-mentioned second operative position Putting, then when compressor 11 runs, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, heat exchange coil 51, two-way electromagnetic valve 82, a mouth of two-position three way magnetic valve 94 and c mouth, capillary tube 62, vaporizer 72, vaporizer 71, check valve 81, are returned to compressor 11, thus form second supercool kind of refrigeration cycle.

The refrigeration system of the present embodiment can apply to have on the direct cooling refrigerator of two warm areas, and wherein vaporizer 71 steams for refrigerating chamber Sending out device, vaporizer 72 is refrigerator evaporator.So, in above-mentioned cold-storage kind of refrigeration cycle, heat exchange coil 52 is vaporizer, for Frozen water 04 provides cold；In above-mentioned first supercool kind of refrigeration cycle, heat exchange coil 51 is subcooler, and frozen water 04 provides for it Cold, vaporizer 71 is vaporizer and provides cold for refrigerating chamber；In above-mentioned second supercool kind of refrigeration cycle, heat exchange coil 51 Being subcooler, frozen water 04 provides cold for it, and vaporizer 72 is vaporizer and provides cold for cold room, and vaporizer 71 is also Be vaporizer and for refrigerating chamber provide cold.

Set the temperature of refrigerating chamber as-18 DEG C, the evaporating temperature of the most supercool kind of refrigeration cycle substantially-35 DEG C～-25 DEG C.Frozen water 04 Cold-storage temperature be 0 DEG C, then the evaporating temperature of cold-storage kind of refrigeration cycle substantially-12 DEG C～-7 DEG C, the evaporation temperature of cold-storage kind of refrigeration cycle Degree is apparently higher than supercool kind of refrigeration cycle, and the most whole refrigeration system has higher Energy Efficiency Ratio.

As shown in figure 13, for the theory of constitution schematic diagram of this utility model refrigeration system the 13rd embodiment.The present embodiment and One embodiment ratio is relatively similar, and difference is:

1, in the present embodiment, the pipeline connecting compressor 11 air entry has been arranged in series gas-liquid separator 10；

2, in the present embodiment, the connecting line between compressor 11 and condenser 21 has bypassed a pipeline, this bypass Pipeline connection pipeline after two-way electromagnetic valve 91, between connection heating power expansion valve 61 and vaporizer 71.

Closing two-way electromagnetic valve 85 and 91, and open two-way electromagnetic valve 83, the present embodiment can realize similar first embodiment Cold-storage kind of refrigeration cycle；Closing two-way electromagnetic valve 83 and 91, and open two-way electromagnetic valve 85, the present embodiment can realize similar the The supercool kind of refrigeration cycle of one embodiment；Additionally, close two-way electromagnetic valve 83 and 85, and open two-way electromagnetic valve 91, this enforcement Example can realize hot-gas bypass defrost circulation, and now, cold-producing medium, after compressor 11 exports, sequentially passes through two-way electromagnetic valve 91, vaporizer 71, check valve 81, gas-liquid separator 10, return compressor 11.

As shown in figure 14, for the theory of constitution schematic diagram of this utility model refrigeration system the 14th embodiment.The present embodiment and One embodiment ratio is relatively similar, and difference is:

1. the present embodiment is provided with two-way two-way electromagnetic valve 81 and replaces the check valve 81 in first embodiment；

2. the present embodiment is provided with four-way change-over valve 92, and the air vent of compressor 11 connects the d end of four-way change-over valve 92, pressure The air entry of contracting machine 11 connects the s end of four-way change-over valve 92, and the entrance of condenser 21 connects the c of four-way change-over valve 92 End, electromagnetic valve 81 connects the e end of four-way change-over valve 92 together with 83；

3., in the present embodiment, on the connecting line between heating power expansion valve 41 and heat exchange coil 51, bypass a pipeline and connect The c end of four-way change-over valve 92, and on bypass line, it has been arranged in series two-way electromagnetic valve 93；

4., in the present embodiment, heating power expansion valve 61 can bidirectional throttle.

During four-way change-over valve 92 power-off, its d end connects with c end, and e end connects with s end, and four-way change-over valve 92 powers on Time, its d end connects with e end, and c end connects with s end.

In the present embodiment, four-way change-over valve 92 power-off, two-way electromagnetic valve 81,85 and 93 closedown, two-way electromagnetic valve 83 dozens Opening, when compressor 11 runs, cold-producing medium, after compressor 11 exports, sequentially passes through the d end of four-way change-over valve 92, four-way The c end of reversal valve 92, condenser 21, reservoir 31, heating power expansion valve 41, heat exchange coil 51, two-way electromagnetic valve 83, The e end of four-way change-over valve 92, the s end of four-way change-over valve 92, enter back into the air entry of compressor 11, forms cold-storage refrigeration Circulation, in cold-storage kind of refrigeration cycle, heat exchange coil 51 is as vaporizer, and provides cold for the frozen water 04 in cold-storage groove 00.

In the present embodiment, four-way change-over valve 92 power-off, two-way electromagnetic valve 83 and 93 closedown, two-way electromagnetic valve 81 and 85 Open, when compressor 11 runs, cold-producing medium from compressor 11 export after, sequentially pass through the d end of four-way change-over valve 92, four Logical the c end of reversal valve 92, condenser 21, reservoir 31, two-way electromagnetic valve 85, heat exchange coil 51, heating power expansion valve 61, vaporizer 71, two-way electromagnetic valve 81, the e end of four-way change-over valve 92, the s end of four-way change-over valve 92, enter back into pressure The air entry of contracting machine 11, forms supercool kind of refrigeration cycle, and in supercool kind of refrigeration cycle, heat exchange coil 51 is as subcooler, cold-storage groove Frozen water 04 in 00 provides cold for it.

In the present embodiment, four-way change-over valve 92 powers on, and two-way electromagnetic valve 81 and 93 is opened, two-way electromagnetic valve 83 and 85 Close, when compressor 11 runs, cold-producing medium from compressor 11 export after, sequentially pass through the d end of four-way change-over valve 92, four Logical the e end of reversal valve 92, two-way electromagnetic valve 81, vaporizer 71, heating power expansion valve 61, heat exchange coil 51, two-way electromagnetism Valve 93, the c end of four-way change-over valve 92, the s end of four-way change-over valve 92, enter back into the air entry of compressor 11, formationization Frost circulation, in defrost circulation, vaporizer 71 is condenser, and heat exchange coil 51 is vaporizer, the defrost heat produced of circulation for Melting the frost tied on vaporizer 71, the cold that defrost circulation is produced passes to frozen water 04 by heat exchange coil 51, more increases Imitate energy-conservation.

As shown in figure 15, for the theory of constitution schematic diagram of this utility model refrigeration system the 15th embodiment.The present embodiment is Following change has been done on the basis of one embodiment:

1, on the connecting pipe before heating power expansion valve 61, from away from heating power expansion valve 61 to the side close to heating power expansion valve 61 To, it is sequentially connected in series heating power expansion valve 42 and heat exchange coil 56, is also parallel with two energisings at the two ends of heating power expansion valve 42 Magnet valve 88, on the connection pipeline between heat exchange coil 56 and heating power expansion valve 61, bypass has a pipeline, this by-pass line The air entry of compressor 11 is connected after two-way electromagnetic valve 87；

2, being additionally provided with cold-storage groove 05, heat exchange coil 56 is placed in cold-storage groove 05, has also deposited ethylene glycol in cold-storage groove 05 09。

Same first embodiment, the present embodiment can also be applied to small-sized low-temperature cold store, in the present embodiment, set low-temperature cold store temperature Degree is for-25 DEG C, and return difference is 2 DEG C, say, that when cold storehouse temperature is more than or equal to-23 DEG C, it is desirable to vaporizer 71 provides Cold, when cold storehouse temperature is less than or equal to-25 DEG C, it is desirable to vaporizer 71 stops providing cold.

In the present embodiment, close two-way electromagnetic valve 85,87 and 88, and open two-way electromagnetic valve 83, then compressor 11 During operation, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, reservoir 31, heating power expansion valve 41, changes After hot coil 51, two-way electromagnetic valve 83, it is returned to compressor 11, thus forms the first cold-storage kind of refrigeration cycle；Close two energisings Magnet valve 83 and 88, and open two-way electromagnetic valve 85 and 87, then when compressor 11 runs, cold-producing medium is defeated from compressor 11 After going out, sequentially pass through condenser 21, reservoir 31, two-way electromagnetic valve 85, heat exchange coil 51, heating power expansion valve 42, change After hot coil 56, two-way electromagnetic valve 87, it is returned to compressor 11, thus forms the second cold-storage kind of refrigeration cycle；Close two energisings Magnet valve 83 and 87, and open two-way electromagnetic valve 85 and 88, then when compressor 11 runs, cold-producing medium is defeated from compressor 11 After going out, sequentially pass through condenser 21, reservoir 31, two-way electromagnetic valve 85, heat exchange coil 51, two-way electromagnetic valve 88, change After hot coil 56, heating power expansion valve 61, vaporizer 71, check valve 81, it is returned to compressor 11, thus forms supercool system SAPMAC method.

In first cold-storage kind of refrigeration cycle, heat exchange coil 51 is vaporizer and provides cold for frozen water 04；Second cold-storage kind of refrigeration cycle In, heat exchange coil 51 is subcooler, and frozen water 04 provides cold for it, and heat exchange coil 56 is vaporizer and carries for ethylene glycol 09 Semen donors；In supercool kind of refrigeration cycle, heat exchange coil 51 is first order subcooler, and frozen water 04 provides cold, heat exchange coil for it 56 is second level subcooler, and ethylene glycol 09 provides cold for it, and vaporizer 71 provides cold for freezer.

Temperature of ice house generally-25～-23 DEG C, the evaporating temperature of the most supercool kind of refrigeration cycle substantially-35～-30 DEG C；Ethylene glycol 09 Cold-storage temperature be about-12 DEG C, then the evaporating temperature substantially-22 of the second cold-storage kind of refrigeration cycle～-18 DEG C；The cold-storage of frozen water 04 Temperature is 0 DEG C, then the evaporating temperature substantially-7 of the first cold-storage kind of refrigeration cycle～-12 DEG C；The evaporation temperature of the first cold-storage kind of refrigeration cycle Degree apparently higher than the second cold-storage kind of refrigeration cycle, the evaporating temperature of the second cold-storage kind of refrigeration cycle again apparently higher than supercool kind of refrigeration cycle, from And making the present embodiment have higher Energy Efficiency Ratio, its effect is similar to three stage compression power-saving technology.

In Figure 15 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, Corresponding this utility model refrigeration system the 15th embodiment.

As shown in figure 16, for the theory of constitution schematic diagram of this utility model refrigeration system the 16th embodiment.The present embodiment is Following change has been done on the basis of two embodiments:

1, on the connecting pipe between heat exchange coil 51 and two-way electromagnetic valve 82, it is in series with heat exchange coil 56；

2, on the connecting pipe between heat exchange coil 51 and heat exchange coil 56, bypass has pipeline, and this by-pass line sequentially passes through After two-way electromagnetic valve 86, heating power expansion valve 42, heat exchange coil 57, check valve 87, the air entry of connection compressor 11；

3, being additionally provided with cold-storage groove 05, heat exchange coil 56 and 57 is placed in cold-storage groove 05, has also deposited in cold-storage groove 05 Ethylene glycol 09.

With the second embodiment, the present embodiment can also be applied to small-sized low-temperature cold store, in the present embodiment, sets low-temperature cold store temperature Degree is for-25 DEG C, and return difference is 2 DEG C, say, that when cold storehouse temperature is more than or equal to-23 DEG C, it is desirable to vaporizer 71 provides Cold, when cold storehouse temperature is less than or equal to-25 DEG C, it is desirable to vaporizer 71 stops providing cold.

In the present embodiment, close two-way electromagnetic valve 82 and 86, and open two-way electromagnetic valve 84, then compressor 11 runs Time, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, reservoir 31, two-way electromagnetic valve 84, heating power swollen After swollen valve 41, heat exchange coil 52, it is returned to compressor 11, thus forms the first cold-storage kind of refrigeration cycle；Close two-way electromagnetic valve 82 and 84, and open two-way electromagnetic valve 86, then when compressor 11 runs, cold-producing medium is after compressor 11 exports, successively Through condenser 21, reservoir 31, heat exchange coil 51, two-way electromagnetic valve 86, heating power expansion valve 42, heat exchange coil 57, After check valve 87, it is returned to compressor 11, thus forms the second cold-storage kind of refrigeration cycle；Close two-way electromagnetic valve 84 and 86, And open two-way electromagnetic valve 82, then when compressor 11 runs, cold-producing medium, after compressor 11 exports, sequentially passes through condensation Device 21, reservoir 31, heat exchange coil 51, heat exchange coil 56, two-way electromagnetic valve 82, heating power expansion valve 61, vaporizer 71, after check valve 81, it is returned to compressor 11, thus forms supercool kind of refrigeration cycle.

In first cold-storage kind of refrigeration cycle, heat exchange coil 52 is vaporizer and provides cold for frozen water 04；Second cold-storage kind of refrigeration cycle In, heat exchange coil 51 is subcooler, and frozen water 04 provides cold for it, and heat exchange coil 57 is vaporizer and carries for ethylene glycol 09 Semen donors；In supercool kind of refrigeration cycle, heat exchange coil 51 is first order subcooler, and frozen water 04 provides cold, heat exchange coil for it 56 is second level subcooler, and ethylene glycol 09 provides cold for it, and vaporizer 71 provides cold for freezer.

In Figure 16 in dotted line frame shown in, be the theory of constitution schematic diagram of one embodiment of this utility model Condensing units, Corresponding this utility model refrigeration system the 16th embodiment.

As shown in figure 17, for the theory of constitution schematic diagram of this utility model refrigeration system the 17th embodiment.The present embodiment is Following change has been done on the basis of 11 embodiments:

2, on the connecting pipe between heat exchange coil 51 and heat exchange coil 56, bypass has pipeline, and this by-pass line sequentially passes through After two-way electromagnetic valve 86, capillary tube 42, heat exchange coil 57, check valve 87, the air entry of connection compressor 11；

With the 11st embodiment, the present embodiment can also be applied on low-temp. refrigerator, in the present embodiment, sets low-temp. refrigerator temperature Degree is for-20 DEG C, and return difference is 2 DEG C, say, that when cold storehouse temperature is more than or equal to-18 DEG C, it is desirable to vaporizer 71 provides Cold, when cold storehouse temperature is less than or equal to-20 DEG C, it is desirable to vaporizer 71 stops providing cold.

In the present embodiment, close two-way electromagnetic valve 82 and 86, and open two-way electromagnetic valve 84, then compressor 11 runs Time, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, two-way electromagnetic valve 84, capillary tube 41, heat exchange dish After pipe 52, it is returned to compressor 11, thus forms the first cold-storage kind of refrigeration cycle；Close two-way electromagnetic valve 82 and 84, and beat Opening two-way electromagnetic valve 86, then when compressor 11 runs, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, after heat exchange coil 51, two-way electromagnetic valve 86, capillary tube 42, heat exchange coil 57, check valve 87, it is returned to compressor 11, thus form the second cold-storage kind of refrigeration cycle；Close two-way electromagnetic valve 84 and 86, and open two-way electromagnetic valve 82, then pressure When contracting machine 11 runs, cold-producing medium, after compressor 11 exports, sequentially passes through condenser 21, heat exchange coil 51, heat exchange coil 56, after two-way electromagnetic valve 82, capillary tube 61, vaporizer 71, check valve 81, it is returned to compressor 11, thus was formed Cold kind of refrigeration cycle.

In first cold-storage kind of refrigeration cycle, heat exchange coil 52 is vaporizer and provides cold for frozen water 04；Second cold-storage kind of refrigeration cycle In, heat exchange coil 51 is subcooler, and frozen water 04 provides cold for it, and heat exchange coil 57 is vaporizer and carries for ethylene glycol 09 Semen donors；In supercool kind of refrigeration cycle, heat exchange coil 51 is first order subcooler, and frozen water 04 provides cold, heat exchange coil for it 56 is second level subcooler, and ethylene glycol 09 provides cold for it, and vaporizer 71 provides cold for refrigerator.

Refrigerator temperature generally-20 DEG C～-18 DEG C, the evaporating temperature of the most supercool kind of refrigeration cycle substantially-35～-28 DEG C；Ethylene glycol The cold-storage temperature of 09 is about-12 DEG C, then the evaporating temperature substantially-22 of the second cold-storage kind of refrigeration cycle～-18 DEG C；The storage of frozen water 04 Cold temperature is 0 DEG C, then the evaporating temperature substantially-7 of the first cold-storage kind of refrigeration cycle～-12 DEG C；The evaporation of the first cold-storage kind of refrigeration cycle Temperature apparently higher than the second cold-storage kind of refrigeration cycle, the evaporating temperature of the second cold-storage kind of refrigeration cycle again apparently higher than supercool kind of refrigeration cycle, So that the present embodiment has higher Energy Efficiency Ratio, its effect is similar to three stage compression power-saving technology.

Finally should be noted that:

1, above example only illustrates refrigeration system is the situation that user is freezed, and does not says situation about heating for user Bright.But, person of an ordinary skill in the technical field should be appreciated that the refrigeration system of any of the above-described embodiment, if cold Condenser 21 is disposed within, can heat for indoor user, thus become heat pump.

2, above example is merely to illustrate the technical solution of the utility model and is not intended to limit, art common It will be appreciated by the skilled person that still detailed description of the invention of the present utility model can be modified or portion of techniques feature is carried out Equivalence is replaced.So, without departing from the spirit of technical solutions of the utility model, all should contain and protect in this utility model request In the middle of the technical scheme scope protected.

Claims

1. a cold storage high-efficiency refrigerating system, comprises refrigerating circuit, and described refrigerating circuit is at least by the pressure being sequentially connected in series connection Contracting machine, condenser, throttling arrangement, vaporizer form, it is characterised in that:

It is provided with container: the first container, the first container is for depositing cool storage medium: the first cool storage medium；

It was provided with cold heat exchanger: first crosses cold heat exchanger, and first crosses cold heat exchanger comprises coolant channel, its coolant channel Being connected between condenser and the throttling arrangement of described refrigerating circuit, first crosses cold heat exchanger uses the form associated with the first container A or form B, described form A refer to first cross cold heat exchanger be placed in the first container or be placed on the first wall of a container (or In wall), described form B refers to that the first cold heat exchanger excessively also comprises another passage, this channel connection first container；

It is provided with cold-storage loop: the first cold-storage loop, the first cold-storage loop is at least by being sequentially connected in series the compressor of connection, condensation Device, throttling arrangement, vaporizer form, the first cold-storage loop and described refrigerating circuit shared compressor；

It is provided with cold-storage aspirating air pipe: the first cold-storage aspirating air pipe, is additionally provided with refrigeration aspirating air pipe and main aspirating air pipe, described The vaporizer of refrigerating circuit, described refrigeration aspirating air pipe, described main aspirating air pipe, described compressor are sequentially connected in series connection, and first The vaporizer in cold-storage loop, the first cold-storage aspirating air pipe, described main aspirating air pipe, described compressor are sequentially connected in series connection；

Being in series with valve member (81) on described refrigeration aspirating air pipe, described valve member (81) is check valve or electromagnetic valve.

The cold storage high-efficiency refrigerating system of one the most according to claim 1, it is characterised in that:

First cold-storage loop and described refrigerating circuit common condenser；

Condenser and first in described refrigerating circuit is crossed between cold heat exchanger, is in series with throttling arrangement: the first cold-storage throttling fills Putting, the first cold-storage throttling arrangement is electric expansion valve, or the two ends of the first cold-storage throttling arrangement are parallel with electromagnetic valve (85)；

First cold-storage loop is at least by being sequentially connected in series the described compressor of connection, described condenser, the first cold-storage throttling arrangement, institute Stated cold heat exchanger, the first cold-storage aspirating air pipe, described main aspirating air pipe composition, the first cold-storage aspirating air pipe was also in series with electricity Magnet valve (83), this electromagnetic valve (83) and described valve member (81) can be same two-position three way magnetic valves.

First cold-storage loop and described refrigerating circuit common condenser；

It is provided with cold-storage evaporator: the first cold-storage evaporator, the first cold-storage evaporator comprises coolant channel, the first cold-storage evaporation Device uses the form A or form D associated with the first container, and described form A refers to that the first cold-storage evaporator is placed in the first container Or being placed in (or in wall) on the first wall of a container, described form D refers to that the first cold-storage evaporator also comprises another passage, should Channel connection the first container；

It is additionally provided with throttling arrangement: the first cold-storage throttling arrangement, the first cold-storage loop is at least by the described compression being sequentially connected in series connection Machine, described condenser, the first cold-storage throttling arrangement, the first cold-storage evaporator, the first cold-storage aspirating air pipe, described main suction nozzle Road forms；

First cold heat exchanger and the first cold-storage evaporator excessively is separate, or the first cold heat exchanger excessively is the first cold-storage evaporator A part, or the first cold-storage evaporator be first cross cold heat exchanger a part.

On the connecting pipe between the compressor and condenser of described refrigerating circuit, bypass has the steaming of refrigerating circuit described in pipeline communication Send out device, this by-pass line is in series with electromagnetic valve (91).

Connecting pipe between the compressor and condenser of described refrigerating circuit is provided with two-position four-way valve (92), these two four Logical valve (92) is an electromagnetic valve, has c mouth, d mouth, e mouth and s mouth totally four control mouths, and has two operative positions Putting, when this two-position four-way valve (92) is in first operating position, c mouth is connected with d mouth, and e mouth is connected with s mouth Logical, when this two-position four-way valve (92) is in second operating position, c mouth is connected with s mouth, and d mouth is connected with e mouth Logical；

The air vent of described compressor is connected with the d mouth of this two-position four-way valve (92)；

The low pressure air suction mouth of described compressor is connected with the s mouth of this two-position four-way valve (92)；

Described condenser is connected with the c mouth of this two-position four-way valve (92)；

Described main aspirating air pipe is connected with the e mouth of this two-position four-way valve (92).

Being additionally provided with container: second container, second container is for depositing cool storage medium: the second cool storage medium；

It was additionally provided with cold heat exchanger: second crosses cold heat exchanger, and second crosses cold heat exchanger comprises coolant channel, its coolant channel Being connected on first and cross between cold heat exchanger and the throttling arrangement of described refrigerating circuit, second crosses cold heat exchanger uses and second container pass Form A of connection or form B, described form A refers to that the second cold heat exchanger excessively is placed in second container or is placed in second container On wall (or in wall), described form B refers to that the second cold heat exchanger excessively also comprises another passage, this channel connection second container；

It is additionally provided with cold-storage loop: the second cold-storage loop, the second cold-storage loop is at least by being sequentially connected in series the compressor of connection, condensation Device, throttling arrangement, vaporizer form, the second cold-storage loop also with described refrigerating circuit shared compressor.

7. a highly effective refrigeration or heat pump assembly, it is characterised in that: comprise the system described in any one of the claims 1 to 6 Cooling system.

8. an Efficient Compression condensation unit, comprises and is sequentially connected in series the compressor of connection, condenser, reservoir and supercool heat exchange Device, is provided with the described feed pipe crossing cold heat exchanger of connection, is additionally provided with the suction nozzle connecting described compressor low pressure air suction mouth, It is characterized in that:

Described cold heat exchanger of crossing comprises passage one and passage two, and its passage one connects described reservoir and described feed pipe；

Being serially connected with valve member (81) on described suction nozzle, described valve member (81) is check valve or electromagnetic valve, on described feed pipe Bypass has the suction nozzle between valve member described in pipeline communication (81) and described compressor, and this by-pass line is in series with electromagnetic valve (83), this electromagnetic valve (83) and described valve member (81) can be same two-position three way magnetic valves；

Being serially connected with throttling arrangement between described reservoir and the described passage one crossing cold heat exchanger, described throttling arrangement is that electronics is swollen Swollen valve, or the two ends of described throttling arrangement are parallel with electromagnetic valve.

9. an Efficient Compression condensation unit, comprises compressor and condenser, the air vent of described compressor and described condenser Entrance be connected, be provided with the feed pipe connecting described condensator outlet, be additionally provided with connection described compressor low pressure air suction mouth Suction nozzle, it is characterised in that:

Being serially connected with valve member (81) on described suction nozzle, described valve member (81) is check valve or electromagnetic valve；

Being provided with cold heat exchanger, described cold heat exchanger of crossing comprises two passages: passage one and passage two, its passage one is serially connected in In described feed pipe；

Being provided with throttling arrangement, be additionally provided with vaporizer, described vaporizer comprises two passages: passage one and passage two；

Described condenser, described throttling arrangement, the passage one of described vaporizer, described compressor are sequentially connected in series connection.

10. a cold storage Efficient Compression condensation unit, comprises the compressor and condenser being connected, and is provided with connection described cold The supply opening of condenser outlet, is additionally provided with air entry, it is characterised in that:

It was provided with cold heat exchanger: first crosses cold heat exchanger, and first crosses cold heat exchanger comprises coolant channel, its coolant channel Being serially connected between described condenser and described supply opening, first crosses cold heat exchanger uses form A or form associated with the first container B, described form A refers to that the first cold heat exchanger excessively is placed in the first container or is placed in (or in wall) on the first wall of a container, Described form B refers to that the first cold heat exchanger excessively also comprises another passage, this channel connection first container；

It is provided with cold-storage evaporator: the first cold-storage evaporator, the first cold-storage evaporator comprises coolant channel, and uses and first The form A of container association or form D, described form A refers to that the first cold-storage evaporator is placed in the first container or is placed in first On wall of a container (or in wall), described form D refers to that the first cold-storage evaporator also comprises another passage, this channel connection first Container；

It is provided with cold-storage aspirating air pipe: the first cold-storage aspirating air pipe, is additionally provided with refrigeration aspirating air pipe and main aspirating air pipe, first Cold-storage evaporator connects the low pressure air suction mouth of described compressor through the first cold-storage aspirating air pipe with described main aspirating air pipe successively, described The air entry of Condensing units connects the low pressure suction of described compressor successively through described refrigeration aspirating air pipe with described main aspirating air pipe QI KOU, described refrigeration aspirating air pipe is in series with valve member (81), and described valve member (81) is check valve or electromagnetic valve；

It is provided with cold-storage loop: the first cold-storage loop, is additionally provided with throttling arrangement: the first cold-storage throttling arrangement, the first cold-storage returns Road is at least by being sequentially connected in series the described compressor of connection, described condenser, the first cold-storage throttling arrangement, the first cold-storage evaporator group Become；

It can be same heat exchanger that first cold-storage evaporator and first crosses cold heat exchanger, it is also possible to be separate heat exchanger, Or the first cold-storage evaporator is a part for the first mistake cold heat exchanger, or the first cold heat exchanger excessively is the first cold-storage evaporator A part.