CN203286820U - Refrigeration plant for refrigeration air conditioner testing system - Google Patents
Refrigeration plant for refrigeration air conditioner testing system Download PDFInfo
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- CN203286820U CN203286820U CN2013202324909U CN201320232490U CN203286820U CN 203286820 U CN203286820 U CN 203286820U CN 2013202324909 U CN2013202324909 U CN 2013202324909U CN 201320232490 U CN201320232490 U CN 201320232490U CN 203286820 U CN203286820 U CN 203286820U
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- refrigerant inlet
- refrigeration
- refrigerant
- evaporimeter
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Abstract
The utility model discloses a refrigeration plant for a refrigeration air conditioner testing system. The refrigeration plant comprises an evaporator and three sets of compression condensing units which are arranged in parallel, each compression condensing unit comprises a compressor, a condenser, an expansion valve and a dispenser, each compressor, each condenser, each expansion valve and each dispenser are sequentially connected with one another, refrigerating fluid inlets of the compressors of the three sets of compression condensing units are connected with a refrigerating fluid outlet of the evaporator respectively, and refrigerating fluid outlets of the dispensers are connected with a refrigerating fluid inlet of the evaporator respectively. According to the refrigeration plant, parallel connection of evaporation coils of three sets of refrigeration systems is achieved by adopting a mixed arrangement mode. On the basis that an existing air processing unit evaporator only can achieve heat exchange of refrigeration working media and air, working medium exchange among refrigeration subsystems is achieved, therefore, differences among working medium thermodynamic properties is eliminated when the refrigeration systems operate, processing nonuniformity of the air is weakened, and uniformity of temperature and humidity of the processed air can meet relatively high requirements.
Description
Technical field
The utility model relates to the operation of air conditioning systems technical field, is specifically related to a kind of refrigerating circuit for the operation of air conditioning systems performance testing device.
Background technology
Evaporimeter is the core component of air-treatment unit, and the exchange capability of heat of evaporimeter directly affects aerial temperature and humidity and the uniformity after the air-treatment unit is processed.
The evaporimeter of existing air-treatment unit partly forms (seeing accompanying drawing 2) by three groups of upper, middle and lower, Condensing units of each part separate connection.The defect of this parallel way is: when the underrun of air-treatment unit, only have Partial shrinkage condensation unit operation, air themperature and humidity after at this moment processing are inhomogeneous; When the underrun of air-treatment unit, can only utilize the part of evaporimeter, the utilization rate of evaporimeter is very low; Due to three group system independent operatings, can not guarantee to process the uniformity of rear air, especially three group systems are difficult to effective coordination when the air that enters the air-treatment unit is inhomogeneous, and after processing, the inhomogeneities of air can further increase.
Patent of invention CN200810106853.8 multiple-evaporator parallel type energy adjusting energy-saving air conditioner, evaporimeter is comprised of n evaporator module, each evaporator module is equipped with an expansion valve, and by n-1 solenoid control, open corresponding evaporator module number when different loads, thereby effectively solved the unfavorable dry friction that causes of compressor oil return, the service life of having improved compressor.
Described invention adopts a cover refrigeration system only evaporimeter to be divided into n evaporator module, the evaporator module number of opening during by the change different load solves the problem of the unfavorable dry friction that causes of compressor oil return, the air individual evaporator module of the m(m by opening≤n) successively during air-conditioning work, although can reach the refrigeration requirement, can not guarantee to process the uniformity of rear air themperature and humidity.Because described patent adopts a cover refrigeration system, refrigeration working medium motion time in refrigeration system becomes m part to enter respectively m evaporator module of opening, the refrigeration working medium thermodynamic properties that enters each evaporator module is identical, treatment effect to air during operation is only determined by 1 to 2 of inlet side evaporator module, the treatment effect of back evaporator module is far away from front 1 to 2 evaporator module, thereby described patent refrigerating capacity is limited.Secondly, when carrying out regulating working conditions, the m of a unlatching evaporator module is regulated simultaneously, thereby the flexibility of described invention is not strong.
Summary of the invention
Technical problem:The utility model provides a kind of can improve the uniformity of processing rear air themperature and humidity, increases the utilization rate of evaporimeter and a kind of refrigeration air-conditioner pilot system refrigeration plant of raising heat exchange efficiency.
Technical scheme:A kind of refrigeration air-conditioner pilot system refrigeration plant of the present utility model, comprise evaporimeter and three groups of Condensing units that are arranged in parallel, Condensing units comprises compressor, condenser, expansion valve and the knockout that connects successively, in three groups of Condensing units, the refrigerant inlet of compressor is connected with the refrigerant outlet of evaporimeter respectively, and the refrigerant outlet of knockout is connected with the refrigerant inlet of evaporimeter respectively.
evaporimeter comprises interconnective snakelike tube bank and synchronous overheated gas collecting apparatus, the import of snakelike tube bank is the refrigerant inlet of evaporimeter, the refrigerant outlet of the knockout of every group of Condensing units is provided with n bar capillary, be correspondingly provided with n refrigerant inlet unit in snakelike tube bank, each refrigerant inlet unit is comprised of three refrigerant inlet that are arranged in order, the n bar capillary of the first knockout is connected with first refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the second knockout is connected with second refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the 3rd knockout is connected with the 3rd refrigerant inlet in n refrigerant inlet unit respectively.
Synchronous overheated gas collecting apparatus comprises inner tube and is enclosed within the outer tube of inner tube outside, space between inner tube and outer tube is the static pressure layer, be evenly distributed with the vent ports that is communicated with the static pressure layer on the tube wall of inner tube, inner tube is connected with the outlet of snakelike tube bank, three refrigerant outlets that arrange on outer tube are the refrigerant outlet of evaporimeter, and three refrigerant outlets of outer tube are connected with the refrigerant inlet of compressor in a Condensing units respectively.
The synchronous overheated gas collecting apparatus of the utility model adopts inside and outside two-layer pipe, static pressure layer in the middle of inner and outer pipes rises and mixes and pressure stabilization function, inner tube is connected with snakelike tube bank outlet, and outer tube is drawn three refrigerant outlets, is connected with the compressor of three groups of Condensing units respectively.In order to guarantee synchronous overheated gas collecting apparatus mixed effect, synchronous overheated gas collecting apparatus outer tube diameter d
wWith the inner tube outside diameter d
nRatio d
w/ d
nShould be 2.5 ~ 3.5.Ratio is too small, do not have and mix and pressure stabilization function, and resistance is excessive; Along with ratio increases, mixes increase corresponding to voltage regulation result, but increasing degree descends gradually, economy is decline thereupon also, thereby optimum ratio should be between 2.5 ~ 3.5.Inner tube is evenly arranged vent ports, makes cold-producing medium be diffused into the static pressure layer from synchronous overheated gas collecting apparatus inner tube uniformly, and for guaranteeing the uniformity that spreads and the resistance of suitable size, the vent ports diameter should be 5mm.
Three groups of Condensing units refrigerant circulations of evaporimeter are as follows: cold-producing medium enters snakelike tube bank from three knockout refrigerant outlets by capillary respectively; Flash to gaseous state at snakelike tube bank inner refrigerant and air heat-exchange by liquid state; The inner tube that the cold-producing medium that flows out from snakelike tube bank outlet enters synchronous overheated gas collecting apparatus; Cold-producing medium enters the static pressure layer by the vent ports that is uniformly distributed on inner pipe; Cold-producing medium flows out by the refrigerant outlet on outer tube the refrigerant inlet that synchronous overheated gas collecting apparatus enters respectively three groups of Condensing units compressors after fully mixing in the static pressure layer.In three groups of Condensing units, cold-producing medium is completed circulation by entering knockout after compressor, condenser, expansion valve successively.Take first group as example, concrete circulation is as follows: cold-producing medium enters the first condenser by the first compressor, in the first condenser inner refrigerant condensation heat release by the gaseous state liquefy, cold-producing medium enters the first expansion valve from the first condenser, and cold-producing medium enters the first knockout after by the first expansion valve throttling and completes circulation.
The evaporimeter of three groups of Condensing units processed of the utility model evaporimeter adopts the mode of mixing lump to realize parallel connection, only can realize that at existing air-treatment unit evaporimeter refrigeration working medium and air carry out realizing the exchange of the working medium between refrigeration subsystem on the basis of exchange heat.Difference when the working medium exchange not only can be eliminated three groups of refrigeration system operations between working substance thermo-dynamic property realizes the complementation of the thermodynamic properties between refrigeration working medium, while is alleviated the inhomogeneities of the temperature and humidity after air-treatment to a great extent, improves the effect of air-treatment.
Beneficial effect:Compare with the evaporimeter of existing air-treatment unit, the utility model has following advantage:
(1) evaporimeter first divides total form to be formed in parallel by the evaporation coil employing of three groups of Condensing units again, only can realize that at existing air-treatment unit evaporimeter refrigeration working medium and air carry out on the basis of exchange heat, realize the exchange of the working medium between cold-producing medium, thereby the difference while having eliminated the refrigeration system operation between working substance thermo-dynamic property realizes the complementation of the thermodynamic properties between refrigeration working medium, has alleviated to a great extent the inhomogeneities of the temperature and humidity after the air-treatment.
(2) evaporimeter first divides total form to be formed in parallel by the evaporation coil employing of three groups of Condensing units again, in the underload situation of only having Partial shrinkage condensation unit operation, cold-producing medium also can take full advantage of whole evaporimeter, improve the utilization ratio of evaporimeter, improve heat exchange efficiency, exerting oneself while increasing simultaneously Partial shrinkage condensation unit operation.
(3) evaporimeter first divides total form to be formed in parallel by the evaporation coil employing of three groups of Condensing units again, can exerting oneself or the number of system operation according to each Condensing units of load adjustment of air-treatment unit, thereby enlarge the adjustable range of exerting oneself of air-treatment unit, can adjust in real time according to the air that enters the air-treatment unit inhomogeneities of aerial temperature and humidity after the further Processing for removing of flexibility of raising system.
(4) synchronous overheated gas collecting apparatus adopts inner tube and the double-decker that is enclosed within the outer tube of inner tube outside, inner tube is uniformly distributed vent ports, gap between inner and outer tubes is the static pressure layer, the static pressure layer rises and mixes and pressure stabilization function, thereby improve the mixed effect of synchronous overheated gas collecting apparatus, reduction is inhomogeneous because of the cold-producing medium thermodynamic properties that mixes inequality and cause, alleviates by the pressure oscillation after synchronous overheated gas collecting apparatus, makes refrigerant outlet pressure and cold-producing medium thermodynamic properties stable homogeneous.
Description of drawings
Fig. 1 is three groups of Condensing units parallel way figure of the utility model air-treatment unit evaporimeter;
Fig. 2 is existing three groups of Condensing units parallel way figure of air-treatment unit evaporimeter;
In figure: the 1-evaporimeter; The snakelike tube bank of 11-; The synchronous overheated gas collecting apparatus of 12-; The 121-inner tube; The 122-outer tube; 123-static pressure layer; The 124-vent ports; 20-the first compressor; 21-the first condenser; 22-the first expansion valve; 23-the first knockout; 30-the second compressor; 31-the second condenser; 32-the second expansion valve; 33-the second knockout; 40-the 3rd compressor; 41-the 3rd condenser; 42-the 3rd expansion valve; 43-the 3rd knockout.
The specific embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
A kind of refrigeration air-conditioner pilot system refrigeration plant of the present utility model, comprise evaporimeter 1 and three groups of Condensing units that are arranged in parallel, and every group of Condensing units includes compressor, condenser, expansion valve and the knockout that connects successively.In every group of Condensing units, the refrigerant inlet of compressor is connected with the refrigerant outlet of evaporimeter 1 respectively, and the refrigerant outlet of knockout is connected with the refrigerant inlet of evaporimeter 1 respectively;
evaporimeter 1 comprises interconnective snakelike tube bank 11 and synchronous overheated gas collecting apparatus 12, the import of snakelike tube bank 11 is the refrigerant inlet of evaporimeter 1, the refrigerant outlet of the knockout of every group of Condensing units is provided with n bar capillary, be correspondingly provided with n refrigerant inlet unit in snakelike tube bank 11, each refrigerant inlet unit is comprised of three refrigerant inlet that are arranged in order, the n bar capillary of the first knockout 23 is connected with first refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the second knockout 33 is connected with second refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the 3rd knockout 43 is connected with the 3rd refrigerant inlet in n refrigerant inlet unit respectively,
Synchronous overheated gas collecting apparatus 12 comprises inner tube 121 and is enclosed within the outer tube 122 of inner tube 121 outsides, space between inner tube 121 and outer tube 122 is static pressure layer 123, be evenly distributed with the vent ports 124 that is communicated with static pressure layer 123 on the tube wall of inner tube 121, inner tube 121 is connected with the outlet of snakelike tube bank 11, three refrigerant outlets that arrange on outer tube 122 are the refrigerant outlet of evaporimeter 1, three refrigerant outlets of outer tube 122 respectively with three groups of Condensing units in the first compressor 20, the second compressor 30 be connected with the refrigerant inlet of the 3rd compressor 40.
Three groups of Condensing units refrigerant circulations of evaporimeter 1 are as follows: cold-producing medium enters snakelike tube bank 11 from the first knockout 23, the second knockout 33 and the 3rd knockout 43 refrigerant outlets by capillary respectively; Flash to gaseous state at snakelike tube bank 11 inner refrigerants and air heat-exchange by liquid state; The inner tube 121 that the cold-producing medium that flows out from snakelike tube bank 11 outlets enters synchronous overheated gas collecting apparatus 12; Cold-producing medium enters static pressure layer 123 by the vent ports 124 that is evenly distributed on inner tube 121; Cold-producing medium flows out synchronous overheated gas collecting apparatus 12, the refrigerant inlet that enters respectively the first compressor 20, the second compressor 30 and the 3rd compressor 40 of three groups of Condensing units by the refrigerant outlet on outer tube 122 afterwards in the interior abundant mixing of static pressure layer 123.In three groups of Condensing units, cold-producing medium is completed circulation by entering knockout after compressor, condenser, expansion valve successively.Take first group as example, concrete circulation is as follows: cold-producing medium enters the first condenser 21 by the first compressor 20 successively, in the first condenser 21 inner refrigerant condensation heat releases by the gaseous state liquefy, cold-producing medium enters the first expansion valve 22 from the first condenser 21, and cold-producing medium enters the first knockout after by the first expansion valve 22 throttlings and completes circulation.
The utility model specific embodiment, when underrun, only have two groups of Condensing units operations, and specific as follows: cold-producing medium enters snakelike tube bank 11 from the first knockout 23 and the second knockout 33 refrigerant outlets by capillary respectively; Flash to gaseous state at snakelike tube bank 11 inner refrigerants and air heat-exchange by liquid state; The inner tube 121 that the cold-producing medium that flows out from snakelike tube bank 11 outlets enters synchronous overheated gas collecting apparatus 12; Cold-producing medium enters static pressure layer 123 by the vent ports 124 that is evenly distributed on inner tube 121; Cold-producing medium flows out synchronous overheated gas collecting apparatus 12 by the refrigerant outlet on outer tube 122 and enters respectively the first compressor 20 of three groups of Condensing units and the refrigerant inlet of the second compressor 30 after the interior abundant mixing of static pressure layer 123; In these two groups of Condensing units, cold-producing medium, by after compressor, condenser and expansion valve, enters knockout and completes circulation successively.
In the utility model device, evaporimeter adopts the mode of mixing to realize parallel connection by the evaporation coil of three groups of Condensing units, can adjust in real time according to the load of air-treatment unit, improved the effect of processing, effectively alleviated the inhomogeneities of the temperature and humidity after the air-treatment, improved the utilization ratio of evaporimeter under the underload, increased heat exchange area, the refrigerating capacity while having improved the part of generating units operation.
Claims (2)
1. refrigeration air-conditioner pilot system refrigeration plant, it is characterized in that, comprise evaporimeter (1) and three groups of Condensing units that are arranged in parallel, described Condensing units comprises compressor, condenser, expansion valve and the knockout that connects successively, in three groups of Condensing units, the refrigerant inlet of compressor is connected with the refrigerant outlet of evaporimeter (1) respectively, and the refrigerant outlet of knockout is connected with the refrigerant inlet of evaporimeter (1) respectively;
evaporimeter (1) comprises interconnective snakelike tube bank (11) and synchronous overheated gas collecting apparatus (12), the import of snakelike tube bank (11) is the refrigerant inlet of evaporimeter (1), the refrigerant outlet of the knockout of every group of Condensing units is provided with n bar capillary, be correspondingly provided with n refrigerant inlet unit in snakelike tube bank (11), each described refrigerant inlet unit is comprised of three refrigerant inlet that are arranged in order, the n bar capillary of the first knockout (23) is connected with first refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the second knockout (33) is connected with second refrigerant inlet in n refrigerant inlet unit respectively, the n bar capillary of the 3rd knockout (43) is connected with the 3rd refrigerant inlet in n refrigerant inlet unit respectively,
synchronous overheated gas collecting apparatus (12) comprises inner tube (121) and is enclosed within the outside outer tube (122) of described inner tube (121), space between inner tube (121) and outer tube (122) is static pressure layer (123), be evenly distributed with the vent ports (124) that is communicated with static pressure layer (123) on the tube wall of inner tube (121), inner tube (121) is connected with the outlet of snakelike tube bank (11), upper three refrigerant outlets that arrange of described outer tube (122) are the refrigerant outlet of evaporimeter (1), three refrigerant outlets of outer tube (122) are connected with the refrigerant inlet of compressor in a Condensing units respectively.
2. a kind of refrigeration air-conditioner pilot system refrigeration plant according to claim 1, is characterized in that, described outer tube (122) inner diameter d
wAnd inner tube (121) outside diameter d
nRatio d
w/ d
nBe 2.5 ~ 3.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202324909U CN203286820U (en) | 2013-04-28 | 2013-04-28 | Refrigeration plant for refrigeration air conditioner testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202324909U CN203286820U (en) | 2013-04-28 | 2013-04-28 | Refrigeration plant for refrigeration air conditioner testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203286820U true CN203286820U (en) | 2013-11-13 |
Family
ID=49543180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202324909U Withdrawn - After Issue CN203286820U (en) | 2013-04-28 | 2013-04-28 | Refrigeration plant for refrigeration air conditioner testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203286820U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234298A (en) * | 2013-04-28 | 2013-08-07 | 南京师范大学 | Refrigerating circuit for air conditioning refrigeration device performance testing device |
| CN110307677A (en) * | 2014-02-03 | 2019-10-08 | 东普雷股份有限公司 | Freezer heat exchanger and refrigerating plant |
-
2013
- 2013-04-28 CN CN2013202324909U patent/CN203286820U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234298A (en) * | 2013-04-28 | 2013-08-07 | 南京师范大学 | Refrigerating circuit for air conditioning refrigeration device performance testing device |
| CN103234298B (en) * | 2013-04-28 | 2015-07-08 | 南京师范大学 | Refrigerating circuit for air conditioning refrigeration device performance testing device |
| CN110307677A (en) * | 2014-02-03 | 2019-10-08 | 东普雷股份有限公司 | Freezer heat exchanger and refrigerating plant |
| CN110307677B (en) * | 2014-02-03 | 2021-04-23 | 东普雷股份有限公司 | Heat exchanger for refrigerating device and refrigerating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20150708 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131113 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |