CN115900196A - Air cooling mode cold and hot fluorine defrosting assembly - Google Patents

Abstract

The invention is suitable for the technical field of hot fluorine defrosting, and provides an air cooling mode cold-hot fluorine defrosting assembly which comprises a compressor, evaporators, condensers, a heat delivery assembly and a cleaning assembly, wherein the compressor is communicated with the two evaporators through a flow regulating valve, hot coolant steam exhausted by the compressor can be delivered to the corresponding evaporators, the temperature of the evaporators is increased for heating and defrosting, meanwhile, the heat delivery assembly extracts heat generated when the condensers work through an air inlet fan inside the heat delivery assembly, the heat is filtered by a filter and then is sprayed to a fan coil by a blowing head, the evaporators are preheated by utilizing waste heat for defrosting, the supercooling and overheating speed of the evaporators is prevented from being too high, and the service life of the assembly is prolonged; meanwhile, a sliding device is arranged on the cold discharge frame, and condensed water remained after frost melting on the evaporator is cleaned through a brush plate on the sliding device, so that the evaporator is prevented from being frozen when being refrigerated; and a water receiving tank is arranged for receiving the melted condensed water and spraying antifreeze on the condensed water.

Description

Air cooling mode cold and hot fluorine defrosting assembly

Technical Field

The invention belongs to the technical field of hot fluorine defrosting, and particularly relates to an air cooling mode cold and hot fluorine defrosting assembly.

Background

In the technical field of the current hot fluorine defrosting, hot fluorine defrosting and hot ammonia defrosting belong to hot gas defrosting, and are widely applied to the refrigeration industry and the ice making industry due to energy conservation, science and safety. The hot fluorine defrosting is that high-temperature and high-pressure exhaust is directly driven into the cold row through an electromagnetic valve or a conversion device to make the cold row generate heat, and a frost layer is firstly melted at the joint of the frost layer and the cold row and then automatically falls off.

The invention patent with publication number CN111707029A discloses an air-cooled defrosting device of a heat pump water heater, wherein high-pressure working medium liquid in a working medium liquid storage tank enters a defrosting evaporator liquid supply pipe electromagnetic valve along an evaporator liquid supply pipe and then enters a defrosting evaporator expansion valve. The high-pressure working medium liquid is decompressed into low-pressure working medium liquid in the expansion valve, and the low-pressure working medium liquid enters the defrosting evaporator to be evaporated and absorb heat. The heat of evaporation of the defrost evaporator is obtained by supplying a large amount of outdoor air by the defrost evaporator fan. The working medium is subjected to heat absorption and evaporation in the defrosting evaporator to generate a large amount of cold steam, the cold steam enters the compressor through the steam return pipe of the defrosting evaporator and the steam return pipe electromagnetic valve, and the working medium steam is compressed into high-temperature and high-pressure working medium steam in the compressor and enters the air inlet interface of the heating three-way valve. And then the air is discharged through the defrosting interface of the heating three-way valve, enters the defrosting air inlet interface of the defrosting three-way valve along the steam connecting pipe, and is discharged through the defrosting air outlet interface of the defrosting three-way valve. The working medium steam enters the evaporator along the low-pressure steam pipe of the evaporator, and the high-temperature high-pressure working medium steam is condensed into liquid after releasing heat and defrosting in the evaporator. The liquid working medium enters the working medium liquid storage tank through the evaporator liquid return pipe and the evaporator liquid return pipe electromagnetic valve to complete the defrosting cycle.

However, the above patents have the following disadvantages:

1. in the patent, a group of air-cooled defrosting evaporators are added in an air-cooled heat pump system, so that the heat efficiency of a heat pump water heater is improved, however, condensed water is easily hung on the surface of the evaporators when defrosting is performed, and the surface of the evaporators is easily frozen when the evaporators urgently need to refrigerate, so that the refrigeration efficiency of the evaporators is reduced;

2. the above patent and the common hot fluorine defrosting assembly independently depend on the evaporator for heating, so that the evaporator is rapidly supercooled and overheated, and the service life of the defrosting assembly is shortened.

Disclosure of Invention

The invention provides an air cooling mode cold and hot fluorine defrosting assembly, and aims to solve the problems that condensed water is easy to hang on the surface of an evaporator when the evaporator is defrosted, water drops are easy to freeze on the surface of the evaporator when the evaporator is in urgent need of refrigeration, the evaporator is rapidly supercooled and overheated, and the service life of the defrosting assembly is easily shortened.

The invention is realized in this way, a cold and hot fluorine defrosting assembly of air cooling mode, including the compressor, it installs four-way valve and two flow control valves separately through the pipeline;

the two evaporators are communicated with the corresponding flow regulating valves through pipelines, and fan coils are arranged on the two evaporators;

the condenser is communicated with the four-way valve through a pipeline, a first expansion valve and a second expansion valve are arranged on the condenser, and the first expansion valve and the second expansion valve are respectively communicated with the corresponding evaporators through pipelines;

and the heat delivery assembly comprises an air inlet fan arranged at the heat dissipation end of the condenser, the air inlet fan is connected with a filter through a pipeline, the filter is provided with two blowing heads through a pipeline, and the two blowing heads are arranged below the corresponding fan coil.

Preferably, the evaporator further comprises a collection box, wherein a liquid return electromagnetic valve is mounted on the collection box and is communicated with the two evaporators through a pipeline;

the liquid delivery electromagnetic valve is arranged on the collecting box and communicated with the compressor through a pipeline, and a pressure release valve is arranged on the collecting box; in this scheme through opening the coolant that returns the liquid solenoid valve after will heating carry to the collecting box in, collect through the collecting box to open and send the liquid solenoid valve and carry the coolant to the compressor in, the circulated use coolant.

Preferably, the evaporator further comprises a cleaning assembly, wherein the cleaning assembly comprises a cold row frame, and the cold row frame is over against the air outlet of the evaporator;

the cold row frame is provided with a plurality of semiconductor refrigeration pieces, each semiconductor refrigeration piece comprises a hot end piece and a cold end piece, and the hot end pieces and the cold end pieces are in one-to-one correspondence;

the hot end pieces are embedded on the inner wall of the cold row frame, and the cold end pieces are arranged on the outer wall of the cold row frame; the hot end piece through the semiconductor refrigeration piece heats around the evaporimeter in this scheme, and cold end piece refrigerates simultaneously, prevents that the temperature drop is too fast.

Preferably, a sliding device is arranged on the cold row frame, the sliding device comprises a ball screw, the ball screw is rotatably mounted in the cold row frame, a stepping motor is mounted on the cold row frame, and the stepping motor is in transmission connection with the ball screw through a coupler;

the ball screw is connected with a sliding nut in a threaded manner; in the scheme, the ball screw is driven to rotate by the stepping motor, so that the sliding nut is driven to move.

Preferably, a brush plate is fixedly mounted on the sliding nut, and the brush plate is connected with the cold row frame in a sliding manner;

the outer wall of the brush plate is provided with a scraping plate and brush bristles; the brush plate longitudinally moves along with the sliding screw in the scheme, residual water drops on the evaporator are scraped through the scraping plate and the brush bristles, and the frosting time of the evaporator II is shortened.

Preferably, the lower ends of the two evaporators are respectively provided with a water receiving tank, and the water receiving tanks are provided with conical grooves;

spray pipes are arranged in the two water receiving tanks, and a plurality of water outlet holes are formed in the spray pipes; the condensed water when the frost layer melts is received through the water receiving tank in this scheme, and the condensed water of being convenient for flows into in the water receiving tank, and the bell jar is convenient for catch the condensed water after melting simultaneously.

Preferably, the water storage tank is filled with an anti-freezing solution, a circulating pump is mounted on the water storage tank, and the circulating pump is respectively communicated with the two water receiving tanks through pipelines;

the bottom ends of the two water receiving tanks are communicated with the water receiving tanks through drain valves; in this scheme carry the antifreeze to the shower through the circulating pump, discharge by the apopore, prevent that the condensate water from unfreezing.

Preferably, the inner wall of the cold row frame is provided with a temperature sensor and a humidity sensor; the temperature and the humidity around the evaporator are detected through the temperature sensor and the humidity sensor in the scheme, and when the humidity exceeds a preset value, the defrosting operation is started.

Compared with the prior art, the invention has the beneficial effects that: the invention relates to an air cooling mode cold and hot fluorine defrosting assembly,

1. the compressor is communicated with the two evaporators through the flow regulating valve, hot coolant steam exhausted by the compressor can be conveyed to the corresponding evaporators, the temperature of the evaporators is increased for heating and defrosting, meanwhile, the heat sending assembly extracts heat generated during the operation of the condenser through an internal air inlet fan, the heat is filtered by the filter and then is sprayed to a fan coil by a blowing head, the evaporators are preheated by utilizing waste heat for defrosting, the overcooling and overheating speed of the evaporators is prevented from being too high, and the service life of the assemblies is prolonged;

2. meanwhile, the sliding device is arranged on the cold row frame, condensed water remained after frost melting on the evaporator is cleaned through a brush plate on the sliding device, the evaporator is prevented from being frozen when the evaporator is refrigerated, a plurality of semiconductor refrigerating sheets are arranged on the cold row frame, and the periphery of the evaporator is heated by utilizing the heating ends of the refrigerating sheets, so that the heating efficiency is further improved;

3. the water receiving tank is installed and used for receiving the melted condensate water and conveying the condensate water to the inner wall of the water storage tank, meanwhile, antifreeze liquid is stored in the water storage tank, and is extracted in a circulating mode and sprayed to the inside of the water receiving tank, so that the condensate water is prevented from freezing and blocking the water receiving tank.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention

FIG. 2 is a schematic view of the cleaning assembly of the present invention

FIG. 3 is a schematic view of the structure of the brush plate of the present invention

FIG. 4 is a schematic view of the water receiving tank of the present invention

In the figure:

1. a compressor; 11. a four-way valve; 12. a flow regulating valve;

2. an evaporator; 21. a fan coil;

3. a condenser; 31. a first expansion valve; 32. a second expansion valve;

4. a heat delivery assembly; 41. an air inlet fan; 42. a filter; 43. a blowing head;

5. a collection box; 51. a liquid return electromagnetic valve; 52. a liquid delivery solenoid valve; 53. a pressure relief valve;

6. cleaning the assembly; 61. brushing the board; 611. a squeegee; 612. brushing; 62. a sliding device; 621. a ball screw; 622. sliding a screw nut; 623. a stepping motor; 63. a cold row frame; 64. a temperature sensor; 65. a humidity sensor;

7. a semiconductor refrigerating sheet; 71. a hot end plate; 72. a cold end plate;

8. a water receiving tank; 81. a tapered slot; 82. a spray pipe; 83. a water outlet hole; 84. a drain valve;

9. a water storage tank; 91. and a circulating pump.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides an air-cooled mode cold and hot fluorine defrosting subassembly, including compressor 1, it installs cross valve 11 and two flow control valve 12 respectively through the pipeline, two evaporimeters 2 all pass through the flow control valve 12 that the pipeline intercommunication corresponds, and all be provided with fan coil 21 on two evaporimeters 2, condenser 3, it passes through pipeline intercommunication cross valve 11, be provided with expansion valve 31 and expansion valve two 32 on the condenser 3, expansion valve 31 and expansion valve two 32 are respectively through the evaporimeter 2 that the pipeline intercommunication corresponds, send hot subassembly 4, including installing the air inlet fan 41 at condenser 3 heat dissipation end, air inlet fan 41 has filter 42 through the pipe connection, and filter 42 has two blowing heads 43 through the pipe mounting, two blowing heads 43 set up the below at the fan coil 21 that corresponds.

Wherein, the compressor 1 will be carried the refrigerant to the condenser 3 in, will compress the refrigerant through expansion valve one 31 and expansion valve two 32, when the refrigerant gets into evaporimeter 2, the space increases suddenly, pressure reduces, the vaporization of liquid refrigerant, become gaseous microthermal freon refrigerant, thereby absorb a large amount of heats, evaporimeter 2 refrigerates, compressor 1 passes through two evaporimeters 2 of flow control valve 12 intercommunication, the hot coolant steam that compressor 1 discharged is carried to corresponding evaporimeter 2 in, the temperature that risees evaporimeter 2 heats the defrosting, and when evaporimeter 2 refrigerates, the heat that produces when air inlet fan 41 absorption condenser 3 work, filter by filter 42, the blowing head 43 is carried to the below of fan coil 21, heat evaporimeter 2 gradually, prevent that evaporimeter 2 from the too cold overheat, the life of extension evaporimeter 2.

The liquid-returning electromagnetic valve is characterized by further comprising a collecting box 5, a liquid-returning electromagnetic valve 51 is mounted on the collecting box 5, the liquid-returning electromagnetic valve 51 is communicated with the two evaporators 2 through a pipeline, a liquid-feeding electromagnetic valve 52 is mounted on the collecting box 5, the liquid-feeding electromagnetic valve 52 is communicated with the compressor 1 through a pipeline, and a pressure release valve 53 is arranged on the collecting box 5.

Wherein, the coolant is delivered to the collecting tank 5 when the liquid return electromagnetic valve 51 is opened, and the coolant is introduced into the compressor 1 by opening the liquid delivery electromagnetic valve 52, thereby recycling the coolant, and simultaneously opening the pressure release valve 53 to reduce the pressure inside the collecting tank 5, thereby facilitating the coolant to flow into the compressor 1.

Referring to fig. 2 and 3, the cleaning assembly 6 further includes a cold row frame 63, the cold row frame 63 faces the air outlet of the evaporator 2, the cold row frame 63 is provided with a plurality of semiconductor chilling plates 7, the semiconductor chilling plates 7 include a hot end plate 71 and a cold end plate 72, the hot end plates 71 and the cold end plates 72 are in one-to-one correspondence, the hot end plates 71 are embedded on the inner wall of the cold row frame 63, and the cold end plates 72 are arranged on the outer wall of the cold row frame 63.

In addition, semiconductor refrigeration piece 7 during operation, cold end piece 72 refrigerates, and hot end piece 71 produces heat, and accessible hot end piece 71 heats evaporimeter 2, improves evaporimeter 2's defrosting efficiency, and cold end piece 72 refrigerates simultaneously, prevents that evaporimeter 2 ambient temperature from crossing excessively.

Be provided with slider 62 on the cold row frame 63, slider 62 includes ball 621, ball 621 rotates and installs in cold row frame 63, and install step motor 623 on the cold row frame 63, step motor 623 passes through shaft coupling transmission connection ball 621, and threaded connection has slip screw 622 on the ball 621, fixed mounting has brush board 61 on the slip screw 622, brush board 61 sliding connection cold row frame 63, be provided with scraper blade 611 and brush hair 612 on the outer wall of brush board 61, install temperature sensor 64 and humidity transducer 65 on the inner wall of cold row frame 63.

In addition, the stepping motor 623 drives the ball screw 621 to rotate, the brush board 61 is driven to move longitudinally through the sliding nut 622, and then the brush bristles 611 and the scraper 612 on the brush board 61 are used for cleaning water drops on the outer wall of the evaporator 2, so that the water drops are prevented from remaining on the evaporator 2, the scraper 611 is made of plastic, the evaporator 2 is prevented from being damaged, and the temperature sensor 64 and the humidity sensor 65 can detect the temperature and the humidity around the evaporator 2, so that the evaporator 2 is monitored in real time.

Referring to fig. 1 and 4, the lower ends of the two evaporators 2 are provided with water receiving tanks 8, tapered grooves 81 are formed in the water receiving tanks 8, spray pipes 82 are installed in the two water receiving tanks 8, a plurality of water outlet holes 83 are formed in the spray pipes 82, the water storage tanks 9 are filled with anti-freezing liquid, circulating pumps 91 are installed on the water storage tanks 9, the circulating pumps 91 are respectively communicated with the two water receiving tanks 8 through pipelines, and the bottom ends of the two water receiving tanks 8 are communicated with the water receiving tanks 8 through drain valves 84.

Specifically, the melted condensed water is received by the catch tank 8, the antifreeze solution in the water storage tank 9 is pumped by the circulating pump 91, and is delivered into the spray pipe 82 to be sprayed out through the plurality of water outlet holes 83, so that the antifreeze solution is mixed with the condensed water, the condensed water with the mixed antifreeze solution flows into the water storage tank 9 by preventing the catch tank 8 from being frozen by the antifreeze solution with too low temperature and opening the drain valve 84, and the antifreeze solution is recycled.

The working principle and the using process of the invention are as follows: referring to fig. 1-4, a compressor 1 delivers a refrigerant into a condenser 3, the refrigerant is compressed by a first expansion valve 31 and a second expansion valve 32, when the refrigerant enters an evaporator 2, a space is suddenly increased, pressure is decreased, the liquid refrigerant is vaporized to become a gaseous low-temperature freon refrigerant, thereby absorbing a large amount of heat, the evaporator 2 performs refrigeration, the compressor 1 communicates two evaporators 2 through a flow control valve 12, hot coolant vapor discharged from the compressor 1 is delivered into the corresponding evaporator 2, the evaporator 2 performs heating, the evaporator 2 is heated by raising temperature of the evaporator 2, thereby melting a frost layer, the coolant is delivered into a collection tank 5 when a liquid return solenoid valve 51 is opened, the coolant is delivered into the compressor 1 by opening a liquid delivery solenoid valve 52, the coolant is circulated, and when the evaporator 2 performs refrigeration, an air inlet fan 41 absorbs heat generated when the condenser 3 operates, the filter 42 filters the freezing-proof liquid, the blowing head 43 is conveyed to the lower part of the fan coil 21 to gradually heat the evaporator 2, so as to prevent the evaporator 2 from being too cold and too hot, the hot end sheet 71 heats the evaporator 2, the defrosting efficiency of the evaporator 2 is improved, meanwhile, the cold end sheet 72 refrigerates to prevent the ambient temperature of the evaporator 2 from being too low, the stepping motor 623 drives the ball screw 621 to rotate, the brush board 61 is driven to move longitudinally by the sliding screw 622, the brush bristles 611 and the scraper 612 on the brush board 61 are further utilized to clean water drops on the outer wall of the evaporator 2, the water drops are prevented from remaining on the evaporator 2, the melted condensate water is received by the water receiving tank 8, the circulating pump 91 extracts the anti-freezing liquid in the water storage tank 9, the anti-freezing liquid is conveyed to the spraying pipe 82 and sprayed out by the plurality of water outlet holes 83, so that the anti-freezing liquid is mixed with the condensate water, and the drain valve 84 is opened, the condensed water of the mixed antifreeze flows into the water storage tank 9, and the antifreeze is recycled.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a cold and hot fluorine defrosting subassembly of air-cooled mode which characterized in that: comprises a compressor (1) which is respectively provided with a four-way valve (11) and two flow regulating valves (12) through pipelines;

the two evaporators (2) are communicated with the corresponding flow regulating valves (12) through pipelines, and fan coils (21) are arranged on the two evaporators (2);

the condenser (3) is communicated with the four-way valve (11) through a pipeline, a first expansion valve (31) and a second expansion valve (32) are arranged on the condenser (3), and the first expansion valve (31) and the second expansion valve (32) are respectively communicated with the corresponding evaporators (2) through pipelines;

send hot subassembly (4), including installing inlet fan (41) of condenser (3) heat dissipation end, inlet fan (41) have filter (42) through the pipe connection, just two blowing head (43) are installed through the pipeline in filter (42), two blowing head (43) set up and correspond fan coil (21)'s below.

2. The air-cooled cold and hot fluorine defrost assembly of claim 1, wherein: the evaporator is characterized by further comprising a collection box (5), wherein a liquid return electromagnetic valve (51) is mounted on the collection box (5), and the liquid return electromagnetic valve (51) is communicated with the two evaporators (2) through a pipeline;

the liquid feeding electromagnetic valve (52) is installed on the collection box (5), the liquid feeding electromagnetic valve (52) is communicated with the compressor (1) through a pipeline, and the collection box (5) is provided with a pressure release valve (53).

3. The air-cooled cold and hot fluorine defrost assembly of claim 1, wherein: the air conditioner also comprises a cleaning assembly (6), wherein the cleaning assembly (6) comprises a cold row frame (63), and the cold row frame (63) is over against the air outlet of the evaporator (2);

the cold row frame (63) is provided with a plurality of semiconductor refrigeration sheets (7), each semiconductor refrigeration sheet (7) comprises a hot end sheet (71) and a cold end sheet (72), and the hot end sheets (71) correspond to the cold end sheets (72) one by one;

the plurality of hot end pieces (71) are embedded on the inner wall of the cold row frame (63), and the plurality of cold end pieces (72) are arranged on the outer wall of the cold row frame (63).

4. An air-cooled mode cold and hot fluorine defrost assembly as in claim 3 wherein: the cold row frame (63) is provided with a sliding device (62), the sliding device (62) comprises a ball screw (621), the ball screw (621) is rotatably installed in the cold row frame (63), a stepping motor (623) is installed on the cold row frame (63), and the stepping motor (623) is in transmission connection with the ball screw (621) through a coupler;

and a sliding nut (622) is connected to the ball screw (621) through threads.

5. The air-cooled cold and hot fluorine defrost assembly of claim 4, wherein: a brush plate (61) is fixedly arranged on the sliding nut (622), and the brush plate (61) is connected with the cold row frame (63) in a sliding manner;

the outer wall of the brush board (61) is provided with a scraper (611) and bristles (612).

6. The air-cooled cold and hot fluorine defrost assembly of claim 1, wherein: the lower ends of the two evaporators (2) are respectively provided with a water receiving tank (8), and the water receiving tanks (8) are provided with conical grooves (81);

two spray pipes (82) are installed in the water receiving box (8), and a plurality of water outlet holes (83) are formed in the spray pipes (82).

7. The air-cooled cold and hot fluorine defrost assembly of claim 6, wherein: the anti-freezing water dispenser comprises a water storage tank (9), wherein anti-freezing liquid is filled in the water storage tank (9), a circulating pump (91) is installed on the water storage tank (9), and the circulating pump (91) is respectively communicated with two water receiving tanks (8) through pipelines;

the bottom ends of the two water receiving tanks (8) are communicated with the water receiving tank (8) through a drain valve (84).

8. An air-cooled cold and hot fluorine defrost assembly as in claim 3 wherein: and a temperature sensor (64) and a humidity sensor (65) are arranged on the inner wall of the cold row frame (63).

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