Freezing test experiment table

Abstract

The utility model discloses a freezing test experiment table which comprises a shell, an adjusting control assembly arranged on one side of the shell and a heat preservation installation assembly arranged on the surface of the shell, the adjusting control assembly comprises a four-way valve arranged on one side of the shell, one end of the four-way valve is connected with a first guide pipe in a matched mode, and one end of the first guide pipe is connected with a first compressor in a matched mode. The surface of the four-way valve is connected with a second guide pipe in a matched mode, one end of the second guide pipe is connected with a second compressor in a matched mode, and equipment switching is achieved through an external control system, so that the matching function among different equipment is completed, the four-way valve is kept in a power-off state, and the throttler and the first compressor are switched on; the condenser, the liquid storage tank and the throttler are connected and then returned to the air cooler, and students can measure the temperature and pressure of the refrigerating system and calculate the performance coefficient on the premise that the system runs stably according to the running state.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field, concretely is a kind of freezing test laboratory bench. BACKGROUND

[0002] The function of the compressor of general refrigerating machine is to compress the steam with low pressure into steam with high pressure, so that the volume of steam is reduced and the pressure is increased. The compressor sucks the working medium steam with low pressure from the cold air fan, and sends it into the condenser after the pressure is increased. The working medium steam is condensed into liquid with high pressure in the condenser. After throttling through the throttle valve, the liquid with low pressure is sent into the cold air fan, and evaporated to become steam with low pressure by absorbing heat in the cold air fan. Then the steam is sent into the inlet of the compressor, so as to complete the refrigeration cycle. In the refrigeration system, the cold air fan, the condenser, the compressor and the throttle valve are the four essential parts of the refrigeration system. Among them, the cold air fan is the equipment for delivering cold energy. The refrigerant absorbs the heat of the cooled object to realize refrigeration. The compressor is the heart, which plays the role of sucking, compressing and delivering the refrigerant steam. The condenser is the equipment for releasing heat, which transmits the heat absorbed in the cold air fan to the cooling medium together with the heat converted by the compressor work.

[0003] The existing public patent (publication number CN212457481U) discloses a refrigeration system of a freezing and refrigerating unit test laboratory bench, which is composed of a compression condensing unit, a performance test module and a cold air fan. The compression condensing unit is composed of five elements. The invention makes full use of test resources, integrates the functions of other test benches on the basis of the original performance test bench, and makes full use of the needs of each test item to achieve the purpose of doing multiple things with one investment and saving a lot of research and development funds in the research and development investment of the compression condensing unit.

[0004] However, there are some problems in the use of the existing freezing test laboratory bench: 1. The current refrigeration system of the freezing test laboratory bench on the market is basically a complete test fixed experimental system. Students can only record data by operating the equipment. The experimental system for system matching is relatively less, and the system matching process is relatively complex. It is necessary to consider the safe operation of the system, system vacuumization, refrigerant filling and other factors. The operation safety of students and the laboratory environment are not up to standard, and there are certain risks in many aspects. 2. The overall sealing and heat insulation of the freezing test laboratory bench on the market is low, and it is not convenient to deal with different needs for heat preservation, so that the experimental results are prone to deviation, causing the overall use inconvenience. UTILITY MODEL CONTENTS

[0005] The utility model discloses a purpose lies in providing a kind of frozen test experiment table to solve the problem raised in the above background technology.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of frozen test experiment table, including shell, adjustment control component being arranged at the one side of shell and heat preservation installation component being arranged on the surface of shell;

[0007] The adjustment control component includes four-way valve, first compressor and second compressor, the four-way valve is arranged at the one side of shell, the first conduit is communicated between the four-way valve and first compressor, the second conduit is communicated between the four-way valve and second compressor, the other end of the first compressor and second compressor is all connected with L pipe, one end of the four-way valve is connected with third conduit, one end of the third conduit is connected with air cooler, the first compressor and second compressor are connected with pressure equalizing pipe, the four-way valve is also connected with fourth conduit, one end of the fourth conduit is connected with stop valve, the surface of the stop valve is connected with process pipe;

[0008] The heat preservation installation component includes the slot being opened in the inside surface of shell, the slot is connected with the insert block inside, the insert block one end detachably connected with heat preservation board, the shell top is connected with cover body, the cover body bottom detachably connected with heat preservation board, the shell inside is kept warm by the heat preservation board.

[0009] As a further scheme of the utility model: the adjustment control component also includes condenser being connected at the one end of L pipe, the condenser one end is connected with liquid accumulator.

[0010] As a further scheme of the utility model: the liquid accumulator one end is connected with throttling device, the throttling device one end detachably connected with output pipe, the output pipe one end penetrates to the shell inside.

[0011] As a further scheme of the utility model: the output pipe one end is connected with air cooler, and the air cooler is detachably connected in the shell inside.

[0012] As a further scheme of the utility model: the heat preservation installation component also includes the first screw hole being opened in the top four corners of shell, the second screw hole is opened on the surface of cover plate, the first screw hole and second screw hole are connected with bolt inside, and the cover plate top is fixedly connected with handle.

[0013] As a further scheme of the utility model: the shell top outside is detachably connected with lower lip, the cover plate surface outside is detachably connected with upper lip, the upper lip and lower lip surface are connected with clamping plate, and the clamping plate one side is fixedly connected with cross piece.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] The utility model discloses in the process of testing, students realize the switching of equipment through external control system, thereby complete the matching function between different equipment, keep four -way valve power -off state, open throttler and first compressor, cold -blast machine connects first compressor, connects condenser, liquid tank, throttler and returns cold -blast machine, students can according to this kind of operating state condition, under the premise of system operation stable, the temperature of refrigeration system, pressure measurement and performance coefficient calculation are carried out, then, four -way valve power -on, first compressor is switched to second compressor, maintains system stable and retest second compressor application in the performance coefficient of system, correspondingly, throttler component can also be changed and adjusted and tested respectively, the valve of four -way reversing valve connected with suction pipe changes the structure design of connecting stop valve, through the external pipe of stop valve, the vacuumizing and refrigerant filling of entire refrigeration system can be realized, and then students can record the operation data of equipment, the experimental system of system matching is relatively more, and the system matching process is relatively simple, and it is not necessary to consider system safe operation and system vacuumizing, refrigerant filling and other factors, the operation safety of students and laboratory environment reach the standard, reduce the risk existing in many aspects.

[0016] The utility model discloses in the process of testing, students realize the switching of equipment through external control system, thereby complete the matching function between different equipment, keep four -way valve power -off state, open throttler and first compressor, cold -blast machine connects first compressor, connects condenser, liquid tank, throttler and returns cold -blast machine, students can according to this kind of operating state condition, under the premise of system operation stable, the temperature of refrigeration system, pressure measurement and performance coefficient calculation are carried out, then, four -way valve power -on, first compressor is switched to second compressor, maintains system stable and retest second compressor application in the performance coefficient of system, correspondingly, throttler component can also be changed and adjusted and tested respectively, the valve of four -way reversing valve connected with suction pipe changes the structure design of connecting stop valve, through the external pipe of stop valve, the vacuumizing and refrigerant filling of entire refrigeration system can be realized, and then students can record the operation data of equipment, the experimental system of system matching is relatively more, and the system matching process is relatively simple, and it is not necessary to consider system safe operation and system vacuumizing, refrigerant filling and other factors, the operation safety of students and laboratory environment reach the standard, reduce the risk existing in many aspects. ACCURACY

[0017] Fig. 1 It is the overall structure schematic view of the utility model embodiment;

[0018] Fig. 2 It is the overall structure schematic view of the utility model embodiment;

[0019] Fig. 3 It is the overall structure schematic view of the utility model embodiment;

[0020] Fig. 4 It is the overall structure schematic view of the utility model embodiment;

[0021] In the diagram: 1. Housing; 201. Four-way valve; 202. First conduit; 203. First compressor; 204. Second conduit; 205. Second compressor; 206. L-tube; 207. Condenser; 208. Liquid receiver; 209. Throttling device; 210. Output pipe; 211. Air cooler; 212. Fourth conduit; 213. Shut-off valve; 214. Process pipe; 215. Equalizing pipe; 216. Oil balance pipe; 217. Third conduit; 301. Groove; 302. Insert; 303. Insulation board; 304. First screw hole; 305. Cover plate; 306. Second screw hole; 307. Bolt; 4. Handle; 5. Upper lip; 6. Lower lip; 7. Clamping plate; 8. Horizontal block. Detailed Implementation

[0022] To facilitate the solution of the problem, this utility model provides a freezing test bench. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example 1, as Figs. 1 to 4 As shown, this embodiment provides a freezing test bench, including a housing 1, an adjustment and control assembly disposed on one side of the housing 1, and a heat-insulating mounting assembly disposed on the surface of the housing 1. The adjustment and control assembly includes a four-way valve 201, a first compressor 203, and a second compressor 205. The four-way valve 201 is disposed on one side of the housing 1. A first conduit 202 connects the four-way valve 201 to the first compressor 203, and a second conduit 204 connects the four-way valve 201 to the second compressor 205. The other... One end of each of the four-way valves 201 is connected to an L-pipe 206. One end of the four-way valve 201 is connected to a third conduit 217. One end of the third conduit 217 is connected to a cooler 211. A pressure equalization pipe 215 is connected between the first compressor 203 and the second compressor 205. An oil balance pipe 216 is connected between the first compressor 203 and the second compressor 205. The four-way valve 201 is also connected to a fourth conduit 212. One end of the fourth conduit 212 is connected to a shut-off valve 213. A process pipe 214 is connected to the surface of the shut-off valve 213.

[0024] The heat preservation installation assembly comprises an embedded groove 301 formed in the inner side surface of the shell 1, an embedded block 302 is connected in the embedded groove 301, one end of the embedded block 302 is detachably connected with a heat preservation plate 303, the top of the shell 1 is connected with a cover body, the bottom of the cover body is detachably connected with the heat preservation plate 303, and the inside of the shell 1 is heat preserved through the heat preservation plate 303.

[0025] In the embodiment, all the technical features in the embodiment one are included, and the adjusting and controlling assembly further comprises a condenser 207 connected with one end of the L-shaped pipe 206, one end of the condenser 207 is connected with a liquid accumulator 208, one end of the liquid accumulator 208 is connected with a throttling device 209, one end of the throttling device 209 is detachably connected with an output pipe 210, one end of the output pipe 210 penetrates into the inside of the shell 1, the second compressor 205 and the condenser 207 are connected through the L-shaped pipe 206, and the output end of the throttling device 209 is discharged through the output pipe 210.

[0026] One end of the output pipe 210 is connected with a cold air machine 211, the cold air machine 211 is detachably connected in the inside of the shell 1, the heat preservation installation assembly further comprises first screw holes 304 formed in the top four corners of the shell 1, second screw holes 306 are formed in the surface of a cover plate 305, the inside of the first screw holes 304 and the second screw holes 306 are connected with bolts 307, the top of the cover plate 305 is fixedly connected with a handle 4, the inside of the shell 1 is subjected to a freezing experiment through the cold air machine 211, the first screw holes 304 are formed in the top of the shell 1 to increase the connection positions, the second screw holes 306 are formed in the surface of the cover plate 305 and are aligned with the first screw holes 304, and the bolts 307 are screwed therein, so that the cover plate 305 is fixedly connected, and the handle 4 is convenient for carrying.

[0027] The top outer side of the shell 1 is detachably connected with a lower lip 6, the outer side of the surface of the cover plate 305 is detachably connected with an upper lip 5, the surface of the upper lip 5 and the lower lip 6 is connected with a clamping plate 7, one side of the clamping plate 7 is fixedly connected with a horizontal block 8, after the cover plate 305 is installed on the top of the shell 1, the upper lip 5 fixedly connected with the outer side of the cover plate 305 is attached to the lower lip 6 detachably connected with the top outer side of the shell 1, the clamping block is inserted therein, the clamping block is tightly connected through clamping, the sealing property of the whole is increased, and the horizontal block 8 is convenient for use.

[0028] In the process of experimental test, the students realize the switching of the equipment through the external control system, so as to complete the matching function between different equipments, keep the four-way valve 201 in the state of power off, open the throttler 209 and the first compressor 203, at this time, the cold air blower 211 is connected with the first compressor 203, connected with the condenser 207, the liquid tank and the throttler returns to the cold air blower 211, the L pipe 206 is connected between the second compressor 205 and the condenser 207, the output pipe 210 is discharged from the output end of the throttler 209, and the students can measure the temperature and pressure of the refrigeration system and calculate the performance coefficient under the premise of stable system operation according to the operation state. Then, the four-way valve 201 is powered on, that is, the first compressor 203 is switched to the second compressor 205, the performance coefficient of the second compressor 205 applied in the system is retested, and the throttler assembly can be changed for adjustment test, wherein the equalizing pipe 215 and the oil balance pipe 216 ensure the lubricating oil return of the two compressors to prevent the damage of the compressor, the main function of the process pipe 214 is to operate the vacuumization and refrigerant filling of the two compressors, the valve connected with the suction pipe in the four-way valve 201 is changed to the structure design connected with the stop valve, the vacuumization and refrigerant filling of the whole refrigeration system can be realized through the external pipe of the stop valve, the shell 1 increases the connection position through the plurality of embedded grooves 301 arranged on the inner surface, the heat preservation plate 303 is connected with the embedded groove 301 through the embedded block 302 detachably connected with one end, so that it is convenient to install on the four sides inside the shell 1, the heat preservation treatment is carried out on the inside of the shell 1, and the top of the shell 1 is closed through the cover plate 305. The cover plate 305 also carries out heat preservation treatment on the top of the shell 1 through the heat preservation plate 303 matched and connected with the bottom, the connection position is increased through the first screw hole 304 arranged on the top of the shell 1, the second screw hole 306 is aligned with the inside of the first screw hole 304 through the second screw hole 306 arranged on the surface of the cover plate 305, and the bolt 307 is screwed in the second screw hole 306, so as to be conveniently fixed and connected.

[0029] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A refrigeration test bench, characterized in that: Including shell (1), the adjusting control subassembly of setting to the shell (1) one side and the heat preservation installation subassembly of setting to the shell (1) surface are provided with; The adjusting control subassembly includes four-way valve (201), first compressor (203) and second compressor (205), the four-way valve (201) is provided to one side of the shell (1), the four-way valve (201) and first compressor (203) between communication has first guide pipe (202), the four-way valve (201) and second compressor (205) between communication has second guide pipe (204), the other end of first compressor (203) and second compressor (205) is connected with L pipe (206) in cooperation, one end of four-way valve (201) is connected with third guide pipe (217) in cooperation, one end of third guide pipe (217) is connected with cold air blower (211) in cooperation, first compressor (203) and second compressor (205) between connecting have pressure equalizing pipe (215) in cooperation, first compressor (203) and second compressor (205) between have oil balance pipe (216) in cooperation, four-way valve (201) is also connected with fourth guide pipe (212) in cooperation, one end of fourth guide pipe (212) is connected with stop valve (213) in cooperation, the surface of stop valve (213) is connected with process pipe (214) in cooperation; The heat preservation installation subassembly includes the embedded groove (301) of being set up in the inner side surface of shell (1), the embedded groove (301) is connected with the embedded block (302) in cooperation inside, one end of embedded block (302) is detachably connected with the heat preservation board (303), the top of shell (1) is connected with the cover in cooperation, the bottom of cover is detachably connected with the heat preservation board (303), the inside of shell (1) is kept warm by the heat preservation board (303).

2. The refrigeration test stand of claim 1, wherein: The adjusting control subassembly still includes condenser (207) that is connected in cooperation in one end of L pipe (206), one end of condenser (207) is connected with liquid accumulator (208) in cooperation.

3. A refrigeration test stand according to claim 2, characterized in that: One end of liquid accumulator (208) is connected with throttling device (209) in cooperation, one end of throttling device (209) is detachably connected with output pipe (210), one end of output pipe (210) penetrates to the inside of shell (1).

4. A refrigeration test stand according to claim 3, characterized in that: One end of output pipe (210) is connected with cold air blower (211) in cooperation, cold air blower (211) is detachably connected in the inside of shell (1).

5. The refrigeration test stand of claim 1, wherein: The heat preservation installation subassembly still includes the first screw hole (304) of being set up in the top four corners of shell (1), the second screw hole (306) is set up on the surface of cover plate (305), the inside of first screw hole (304) and second screw hole (306) is connected with bolt (307) in cooperation, handle (4) is fixedly connected on the top of cover plate (305).

6. A refrigeration test stand according to claim 5, characterized in that: The outside of top of shell (1) is detachably connected with lower lip (6), the outside of surface of cover plate (305) is detachably connected with upper lip (5), the surface of upper lip (5) and lower lip (6) is connected with clamping plate (7) in cooperation, one side of clamping plate (7) is fixedly connected with cross block (8).

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