CN202653685U - Propane display cabinet - Google Patents
Propane display cabinet Download PDFInfo
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- CN202653685U CN202653685U CN 201120560518 CN201120560518U CN202653685U CN 202653685 U CN202653685 U CN 202653685U CN 201120560518 CN201120560518 CN 201120560518 CN 201120560518 U CN201120560518 U CN 201120560518U CN 202653685 U CN202653685 U CN 202653685U
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- propane
- condenser
- muffler
- compressor
- condenser pipe
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Abstract
The utility model provides a propane display cabinet, which is simple in structure, has excellent cooling effect, and can be used for preventing condensation water from overflowing. The propane display cabinet comprises a compressor, a condenser, a drying filter, a capillary pipe and an evaporator which are sequentially connected and form a loop, an automatic evaporation device is arranged between the compressor and the condenser and comprises a condensation pipe and connecting pipes, the connecting pipes are connected with the two ends of the condensation pipe, and the connecting pipes connected with the two ends of the condensation pipe are respectively communicated with the compressor and the condenser. The propane display cabinet is a single-circulation refrigerating system, and is low in manufacturing cost and high in safety reliability, and perfusion quantity of a refrigerating agent is low.
Description
Technical field
The present invention relates to a kind of electric refrigerator device, relate in particular to a kind of by the showcase of propane as cold-producing medium.
Background technology
What most commercial refrigeration showcase adopted now is freon R134a cold-producing medium, power consumption is larger, refrigerating speed is slower, and easily environment is worked the mischief, the showcase without the freon cold-producing medium therefore occurred, for example, select R290 cold-producing medium (the R290 cold-producing medium is the propane refrigeration device), R290 is a kind of efficiency natural environmental protection refrigerant, has combustibility, but can realize using safely after rational design refrigeration system reduces groundwater increment and adopts the safety measure such as explosion-proof by controlling.
Chinese patent ZL 200710192770.0 discloses a kind of refrigerator that uses propane refrigerant, comprises compressor, condenser, first throttle device, the second throttling arrangement, the 1st evaporimeter, the 2nd evaporimeter and muffler.This patent has two throttling arrangements and two evaporimeters, complex structure, it is larger to take up room, with high costs, and the groundwater increment that the R290 cold-producing medium occurs easily exceeds standard, affect performance and the security reliability of refrigerator, cause its refrigerating speed slower, refrigeration is not good, simultaneously, condensation water in the cabinet overflows from drip tray easily, affects result of use.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of simple in structure, refrigeration is more excellent and can prevent the propane showcase that condensation water overflows.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of propane showcase, comprise the compressor, condenser, device for drying and filtering, capillary and the evaporimeter that connect successively and form the loop, be provided with self-evaporating unit between described compressor and the condenser, described self-evaporating unit comprises condenser pipe and is connected to the tube connector at condenser pipe two ends that the tube connector at described condenser pipe two ends is communicated with respectively compressor and condenser.
Described condenser pipe is the serpentine coil structure.
Described condenser pipe is bent at least one U-shaped structure that is interconnected, and the span D1 of the condenser pipe of the structure that takes the shape of the letter U is preferably 30～100mm.
The diameter of described condenser pipe is 8mm.Condenser pipe is wrapped with stainless steel tube, and condenser pipe and stainless steel tube interface adopt the thermal shrinkable sleeve sealing.
Described tube connector is S shape structure.The crooked radian radius D2 of the tube connector of S-shaped structure is preferably 30～100mm.
The horizontal length L of described tube connector is 200～500mm, and vertical length H is 150～300mm, and the diameter of tube connector is preferably 4～8mm.
Described capillary is comprised of two minutes capillaries that are connected in parallel.Divide length capillaceous to be preferably 2000～5000mm.Capillary and muffler are in contact with one another together by parcel or soldering.
Be provided with muffler between described compressor and the self-evaporating unit, described muffler is that two ends are funnelform hollow circuit cylinder body structure.Length between the muffler two-port is preferably 80～200mm, and the diameter of hollow circular cylinder is preferably 20～50mm.
The present invention in contrast to prior art and has the following advantages:
At first, the present invention has increased self-evaporating unit between condenser and muffler, and effective condensation water that solved in the cabinet is assembled in drip tray, even overflows the drip tray problem.Self-evaporating unit can be extracted out with compressor bottom board and make things convenient for the client to clean condenser, the condenser pipe of self-evaporating unit adopts crooked pipeline structure to can be good at heat radiation, condensation water cools off the condenser pipe of high temperature, make the condensation water evaporation, taken away heat, reduced condensation temperature, to the later stage cold-producing medium in condenser again condensation the good condensation temperature difference is provided.The tube connector of self-evaporating unit adopts S shape structure simultaneously, has good contraction elasticity, can alleviate resonance.
Secondly, capillary of the present invention with two pieces minutes capillary parallelings together, realize two independently refrigerant circulation passage, increased refrigerant flow, capillary formed two jets and mutually interference to evaporimeter in two pieces minutes, improved heat exchange efficiency, two capillaries and muffler close contact form backheat, have increased degree of supercooling, improve refrigerating capacity, thereby realized the purpose of showcase fast-refrigerating.Simultaneously this structure capillaceous has also overcome the blocked problem of not freezing that causes after the single capillary throttling.Capillary independent loops work in every minute of the present invention, mutually noninterfere, even if wherein stopping up appears in a certain minute capillary, another root divides capillary still can normally use, this greatly reduces maintenance and drops into and maintenance cost, has avoided user's loss.
Then, the present invention is provided with muffler between compressor and self-evaporating unit, has reduced the speed of cold-producing medium in pipeline, has reduced the turbulent flow sound of cold-producing medium in the pipeline, has reduced resonance and the noise of pipeline, has improved the quality of product.
Description of drawings
Fig. 1 is the theory diagram of the embodiment of the invention;
Fig. 2 is the structural representation of muffler of the present invention;
Fig. 3 is the perspective view of self-evaporating unit of the present invention;
Fig. 4 is the front view of self-evaporating unit of the present invention;
Fig. 5 is the side view of self-evaporating unit of the present invention;
Fig. 6 is the present invention and R134a cold-producing medium showcase refrigeration curve comparison figure.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, a kind of propane refrigerant showcase, comprise the compressor 3, muffler 2, self-evaporating unit 4, condenser 5, device for drying and filtering 6, capillary 7 and the evaporimeter 1 that connect successively and form the loop, wherein, connect by muffler between evaporimeter 1 and the compressor 3.
Self-evaporating unit 4 in the present embodiment is installed on the top of showcase drip tray, drip tray is positioned on the compressor bottom board, self-evaporating unit 4 has partly takes out function, and the so-called function of partly taking out is for the ease of maintenance and cleaning the self-evaporating unit 4 that is installed on the drip tray to be extracted out with compressor bottom board.
Self-evaporating unit 4 comprises condenser pipe 8 and the tube connector 9 that is connected to condenser pipe 8 two ends, and the tube connector 9 that wherein is connected with condenser pipe 8 one ends is communicated with muffler 2, and the tube connector 9 that is connected with condenser pipe 8 other ends is communicated with condenser 5.Condenser pipe 8 is crooked tubular structure, crooked form has various, such as S shape or serpentine coil structure or U-shaped structure that at least one is interconnected, condenser pipe 8 in the present embodiment is some U-shaped structures that are interconnected, as shown in Figure 4, the span D1 of U-shaped structure condenser pipe 8 is 30～100mm, and the diameter of condenser pipe 8 is 8mm.The middle part of condenser pipe 8 is the aluminum pipe of being made by aluminium, and the two ends interface is the copper pipe of being made by copper material, and copper pipe and aluminum pipe adopt resistance welded to link together.For preventing that condenser pipe 8 from being corroded by corruption, the outer wrap of condenser pipe 8 has stainless steel tube, and condenser pipe 8 is enclosed within the inside of stainless steel tube, and condenser pipe 8 adopts the thermal shrinkable sleeve sealing with the stainless steel tube interface, to avoid oxidation.Needed to fill protective gas before condenser pipe 8 stainless steel tubes outside with it seal, such as nitrogen, nitrogen at 0.05～0.2Mpa, is strengthened the thermal conductivity of condenser pipe 8 and condensation water at pressure.
Such as Fig. 3, shown in Figure 5, the tube connector 9 of self-evaporating unit 4 is S shape tubular structure in the present embodiment, and the diameter of tube connector 9 is 4～8mm, and the crooked radian radius D2 of S shape tube connector is 30～100mm, the horizontal length L of tube connector 9 is 200～500mm, and vertical length H is 150～300mm.Tube connector 9 in the present embodiment is made by the soft copper material, adds the S shape warp architecture of tube connector 9 self, so that tube connector 9 has certain elasticity, can stretch in the vertical, and flexible amplitude is at 100～300mm, and the broken pipe phenomenon can not occur.
Or/and aluminum pipe makes, also can select steel to make, in like manner, tube connector 9 also can adopt aluminum pipe or/and steel pipe manufacturing except with the copper pipe to the condenser pipe 8 of above-mentioned self-evaporating unit 4 except adopting copper pipe.
As shown in Figure 1, capillary 7 of the present invention is comprised of two two minutes capillaries that are connected in parallel, and length capillaceous was 2000～5000mm in every minute, and minute pipe interior diameter capillaceous of each in the present embodiment is 1.0mm, and length is 3000mm.In order not increase the total length that increases capillary 7 in the situation that capillary 7 takes up room, the operating efficiency of capillary 7 is improved, two minutes capillaries in the present embodiment are helical form, the spring-like structure.Capillary was told by the same transition conduit that connects device for drying and filtering 6 in two minutes, formed shunting, collaborated again at last a place, was connected with the transition conduit of evaporimeter 1.In the capillary 7 each minute capillary can both work alone, mutually noninterfere, even there is a minute capillary blocked, capillary still can normally use in other one piece minute, this greatly reduces maintenance and drops into and maintenance cost, avoid user's loss, thereby realized overcoming the problem that the single capillary throttling can not be freezed after blocked.
In order to increase the contact area between capillary 7 and the muffler, present embodiment is in contact with one another together capillary 7 and muffler by technological means such as parcel or solderings, because it is large that contact area becomes, the heat utilization efficiency of cold-producing medium also improves thereupon, heat exchange amount and degree of supercooling increase, thereby have improved refrigerating capacity.
As shown in Figure 2, muffler 2 of the present invention is funnelform hollow circuit cylinder body structure for two ends, and muffler 2 is preferably copper material and makes, and the length between muffler 2 two-port is 80～200mm, and the diameter of its cylindrical body part is 20～50mm.Become the gas of high pressure-temperature after the compression of cold-producing medium by compressor 3, its very fast flow velocity enters in the muffler 2 from funnelform entrance, because the cross-sectional area that enters behind the muffler 2 becomes suddenly large, the flow velocity of cold-producing medium is slowed down, avoid twice noise because of the cold-producing medium jet generation, also avoided the loss of energy simultaneously.On the other hand, owing to have a constant volume in the muffler 2, cold-producing medium accumulates in container, have transition and slow down the effect of flow of refrigerant, cold-producing medium through another section outlet of muffler 2 after by throttling.With respect to the speed that enters muffler 2, its speed that flows out muffler 2 slightly reduces, because the cross-sectional area of the pipeline of joint noise reduction device 2 front and back is identical, the reduction of flow velocity reduces the flow that passes through pipeline in the unit interval, and then the realization resistant noise-reducing, reduced resonance and noise.More than be general work principle and the specific structural features of muffler 2 of the present invention, but the structure of this muffler 2 not being limited to the hollow circuit cylinder body structure, also can be the square body structure, so long as hollow and can get final product with mode work described herein.
Muffler 2 is not the necessary element of realizing the object of the invention, if there is not muffler 2, the tube connector 9 that then is connected with condenser pipe 8 one ends is communicated with compressor 3, and the tube connector 9 that is connected with condenser pipe 8 other ends is communicated with condenser 5.
Operation principle of the present invention is: compressed machine 3 compressions of cold-producing medium form the air-flow of HTHP, behind the airflow passes muffler 2, flow velocity slows down relatively, the turbulent flow sound of cold-producing medium is reduced, enter afterwards self-evaporating unit 4, condensation water heat absorption evaporation on the condenser pipe 8, the temperature that has reduced cold-producing medium makes the refrigerant gas stream of high temperature become the refrigerant gas stream of middle high temperature, after cold-producing medium enters condenser 5, under the effect of condenser 5, the refrigerant gas of middle HTHP gradates the liquid into middle temperature high pressure, and finally be converted into the highly pressurised liquid that is higher than 5～20 ℃ of environment temperatures, shunt the gas admixture at night of then collaborating a place and becoming low-temp low-pressure and enter in the evaporimeter 1 through device for drying and filtering 6 two the arranged side by side minute capillaries of flowing through, cold-producing medium is evaporation endothermic in evaporimeter 1, give the cooling of the thermic load in the showcase, cold-producing medium absorbs heat through evaporimeter 1 after the evaporation, become the gas of low-temp low-pressure, at cold-producing medium when the muffler and the cold-producing medium heat exchange in the capillary 7, by effectively overheated, increase degree of supercooling, thereby increase refrigerating capacity.Adopt the capillary 7 of self-evaporating unit 4 and parallel-connection structure can increase refrigerating capacity, improve cold-producing medium at the heat exchange efficiency of evaporimeter, and then improve the refrigeration performance of showcase.
Through carry out the test comparison test at product, the present invention has good effect, and concrete process of the test is as follows.
Experiment one
Erasure effect to muffler 2 is tested.The selected model machine of this test is R290 cold-producing medium showcase, and the model machine model is SC-758WYL/HP.Under identical physical environment, install and the muffler 2 of dismantling at same model machine respectively, record respectively two kinds of noise decibel values under the situation, so-called same physical environment refers to that to keep the physical quantitys such as the service voltage of same model machine and air pressure on every side, temperature, humidity identical as far as possible when test is installed muffler 2 and muffler 2 is not installed respectively herein.After tested, the decibel value of gained is: the noise that opens the door that muffler 2 is not installed is that 65dB(dB is the decibel value unit of sound); The noise that opens the door behind the installation muffler 2 is 62dB.Can find out that by contrast test muffler of the present invention has the effect of obvious reduction noise.
Test two
Condensation effect to self-evaporating unit 4 is tested.The selected model machine of this test is R290 cold-producing medium showcase, and the model machine model is SC-758WYL/HP.Under identical physical environment, install and the self-evaporating unit 4 of dismantling at same model machine respectively, respectively the state of condensation water in observed and recorded condenser 5 inlet temperatures and the drip tray.In this test, the environment temperature around the model machine is 32 ℃, and ambient humidity is 75%, test result is: self-evaporating unit 4 is not installed, and condenser 5 inlet temperatures are 85～100 ℃ of scopes, condensation water showcase continuously operation overflowed from drip tray in 24 hours; Install self-evaporating unit 4, condenser 5 inlet temperatures are 70 ℃～85 ℃ scopes, and condensation water not yet overflows from drip tray after showcase moves 72 hours continuously.Test shows: self-evaporating unit 4 is installed is made the refrigerant temperature that enters condenser 5 reduce by 10～15 ℃, improved properties of product and greatly prolonged the time that drip tray overflows.
Test three
Experiment three is contrast tests of R290 cold-producing medium showcase and R134a cold-producing medium showcase refrigeration, and wherein, the R134a cold-producing medium is Freon 13 4a cold-producing medium.Process of the test is: under same physical environment, putting into initial temperature respectively in R290 cold-producing medium showcase and R134a cold-producing medium showcase is 32 ℃ ± 0.5 beverage, the temperature of testing respectively beverage in two showcases every one minute, until beverage temperature is reduced to 6.6 ℃, and every group of data that will record are depicted as curve.The showcase ambient temperature is 32 ℃ in this process of the test, Fig. 6 is two showcase correlation curve figure, wherein curve 1 is R290 cold-producing medium showcase, curve 2 is R134a cold-producing medium showcases, can find out that when beverage temperature was reduced to same level, the cooling velocity of R290 cold-producing medium showcase was than the fast 2～4h of R134a cold-producing medium showcase, can release, the heat exchange efficiency of R290 cold-producing medium is higher than R134a.
Only be specific embodiments more of the present invention below, but protection scope of the present invention is not limited to this, the tired insubstantial modifications of utilizing design concept of the present invention that this invention is made all falls within protection scope of the present invention.
Claims (10)
1. propane showcase, comprise the compressor (3), condenser (5), device for drying and filtering (6), capillary (7) and the evaporimeter (1) that connect successively and form the loop, it is characterized in that, be provided with self-evaporating unit (4) between described compressor (3) and the condenser (5), described self-evaporating unit (4) comprises condenser pipe (8) and is connected to the tube connector (9) at condenser pipe (8) two ends that the tube connector (9) at described condenser pipe (8) two ends is communicated with respectively compressor (3) and condenser (5).
2. propane showcase according to claim 1 is characterized in that, described condenser pipe (8) is the serpentine coil structure.
3. propane showcase according to claim 1 is characterized in that, described condenser pipe (8) is bent at least one U-shaped structure that is interconnected.
4. propane showcase according to claim 1 is characterized in that, described tube connector (9) is S shape structure.
5. propane showcase according to claim 4 is characterized in that, the crooked radian radius D2 of the tube connector of described S-shaped structure (9) is 30～100mm.
6. propane showcase according to claim 4 is characterized in that, the horizontal length L of described tube connector (9) is 200～500mm, and vertical length H is 150～300mm.
7. propane showcase according to claim 1 is characterized in that, described capillary (7) is comprised of two minutes capillaries that are connected in parallel.
8. propane showcase according to claim 7 is characterized in that, described minute length capillaceous is 2000～5000mm.
9. propane showcase according to claim 7 is characterized in that, described capillary (7) is in contact with one another together by parcel or soldering with muffler.
10. propane showcase according to claim 1 is characterized in that, is provided with muffler (2) between described compressor (3) and the self-evaporating unit (4), and described muffler (2) is funnelform hollow circuit cylinder body structure for two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120560518 CN202653685U (en) | 2011-12-29 | 2011-12-29 | Propane display cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120560518 CN202653685U (en) | 2011-12-29 | 2011-12-29 | Propane display cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202653685U true CN202653685U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120560518 Expired - Lifetime CN202653685U (en) | 2011-12-29 | 2011-12-29 | Propane display cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN202653685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181695A (en) * | 2011-12-29 | 2013-07-03 | 海信容声(广东)冷柜有限公司 | Propane display cabinet |
-
2011
- 2011-12-29 CN CN 201120560518 patent/CN202653685U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103181695A (en) * | 2011-12-29 | 2013-07-03 | 海信容声(广东)冷柜有限公司 | Propane display cabinet |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
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| CX01 | Expiry of patent term |