CN208694639U - A kind of hot test dehumidifying condensing unit - Google Patents

Abstract

The utility model discloses a kind of hot test dehumidifying condensing unit, including condenser pipe, it is provided with insulating tube outside condenser pipe, insulating tube is equipped with multiple air inlets and multiple air outlets.The utility model on the refrigeration main road of temperature test chamber by drawing an extremely cold pipeline gone in chamber at return air inlet, using extremely cold pipeline come moisture when controlling hot test in case in air, it is allowed to rapid condensation frosting, and then achieve the effect that dehumidifying, so that relative humidity in case is able to satisfy test requirements document in a short time, and chamber operation power consumption is effectively reduced.

Description

A kind of hot test dehumidifying condensing unit

Technical field

The utility model relates to a kind of dehumidifying condensing units, and in particular to a kind of hot test dehumidifying condensing unit.

Background technique

In hot test, big multi-standard does not require to control to the relative humidity in chamber, but GJB150.3A-2009 " military hardware laboratory environment test method third portion: hot test " and " the military hardware laboratory GJB150.24A-2009 The 24th part of environmental test method: temperature-humidity-vibration-height test " to hot test section when case in relative humidity control have Clear stipulaties.Wherein, GJB150.3A-2009 high temperature day circulation is divided to two kinds of climate types: basic heat and heat.Weather is substantially warm Middle peak demand relative humidity≤44%, minimum requirements≤5%；Weather hankers peak demand relative humidity≤8%, minimum requirements ≤ 1%；GJB150.24A-2009 then requires high temperature section relative humidity≤30%.

For temperature test chamber when carrying out the test of high temperature low humidity, dehumidification mode is general are as follows: 1. by external auxiliary instrument (dry-air blast Purging uses chemical drier)；2. the included R404 high temperature compressor dehumidifying of chamber, but dehumidify and use duration (generally about up to steady For 4h or so).R404 high temperature compressor dehumidification principle are as follows: when temperature is up to setting value, R404 high temperature compressor is just opened Dynamic dehumidification function.If being provided with lower humidity value in program, R404 compressor will increase power and dehumidify, and export cooling capacity It inevitably enlarges, and when compressor output cooling capacity is larger, it is cold and hot to balance that heating system can only increase the output of heat, and because closing Ring controls repeated trial of strength, will so cause chamber operation power to improve, increase power consumption.When the output of cold heat amount is excessive, also It is larger that the fluctuation of chamber temperature indicating value can be caused, in some instances it may even be possible to exceed standard requirements franchise.

Therefore, seek a kind of effective method or apparatus and require solving the problems, such as hot test for relative humidity and is lower It is very necessary.

Utility model content

The purpose of the utility model is to provide a kind of hot test dehumidifying condensing units, to solve to require phase in hot test The problem lower to humidity.

In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of hot test removes wet condensation Device, including condenser pipe, condenser pipe are provided with insulating tube outside, and insulating tube is equipped with multiple air inlets and air outlet.

Further, the shape of condenser pipe is bending or helical form.

Further, condenser pipe is the copper pipe that diameter is Ф 5mm- Ф 10mm.

Further, insulating tube is coated with heat-preservation cotton.

Further, the bottom of condenser pipe is equipped with discharge outlet.

Further, the throttle valve connection in the import and temperature test chamber of condenser pipe, the outlet of condenser pipe and temperature are tried 404 stage compressors connection in tryoff.

Further, import barrier solenoid valve is set between the throttle valve in the import and temperature test chamber of condenser pipe, it is cold Control of export solenoid valve is set between 404 stage compressors in the outlet and temperature test chamber of solidifying pipe.

Further, the import/export electromagnetic valve coil of import barrier solenoid valve and control of export solenoid valve is connected to temperature In chamber heating system.

Further, the route between import/export electromagnetic valve coil and temperature test chamber heating system is equipped with and stirs out It closes.

The utility model hot test dehumidify condensing unit the utility model has the advantages that

The condensing unit 1. the utility model hot test dehumidifies, by drawing one on the refrigeration main road of temperature test chamber The extremely cold pipeline in chamber at return air inlet is gone to, using extremely cold pipeline come moisture when controlling hot test in case in air, It is allowed to rapid condensation frosting, and then achievees the effect that dehumidifying, relative humidity in case is made to be able to satisfy test requirements document in a short time, And chamber operation power consumption is effectively reduced.

The condensing unit 2. the utility model hot test dehumidifies, it is low in cost, using simple, as a result reliably, and marking It is transformed successfully on quasi- high-low temperature test chamber and the damp and hot low pressure test chamber of high/low temperature, effect on moisture extraction is significant and the dehumidifying time is short, It is achieved while energy-saving and greatly approves and trust.

Detailed description of the invention

It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings Obtain other attached drawings.

Fig. 1 is the structural schematic diagram of the utility model hot test dehumidifying condensing unit；

Fig. 2 is circuit control part schematic diagram in the utility model hot test dehumidifying condensing unit.

Wherein, 1. condenser pipe, 2. insulating tubes, 3. air inlets, 4. air outlets, 5. import barrier solenoid valves, 6. controls of export Solenoid valve, 7. discharge outlet, 8. temperature test chambers.

Specific embodiment

In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction with the utility model embodiment In attached drawing, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described implementation Example is only the embodiment of the utility model a part, instead of all the embodiments.Based on the embodiments of the present invention, Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all should belong to The range of the utility model protection.

It is transformed in 8 refrigeration system of temperature test chamber, it is necessary first to understand (the reference of 8 refrigeration principle of temperature test chamber Attached drawing 1): after liquid refrigerant absorbs the heat by solidifiable substance in evaporator, the steam for being vaporized into low-temp low-pressure is compressed Machine sucking, after be compressed into the steam of high temperature and pressure and be discharged into condenser, encounter cooling medium (air/water) within the condenser and put Heat is condensed into high-pressure liquid, is the refrigerant of low-temp low-pressure through throttle valve throttling, evaporator heat absorption vaporization is entered back into, to reach The purpose of circularly cooling.Under normal conditions, temperature test chamber can be equipped with two groups of compressors, and one group is R404 high temperature compressor (the Level-one), one group is R23 cryogenic compressor (second level).There are mainly two types of purposes for R404 compressor, first is that when being used for hot test Cold and hot balance, second is that in low-temperature test for high stage compressor R23 cool down.R23 compressor is then mainly used for trying in low temperature Refrigeration when testing, lowest refrigerating temperature can reach -80 DEG C or so, and R404 compressor lowest refrigerating temperature is usually -50 DEG C or so. In general refrigeration cycle, R404 refrigerant output temperature is at -37 DEG C or so.

When hot test, before the high-temperature temperature of setting will reach, high temperature compressor R404 starts to start, R404 refrigeration Agent is estimated before entering evaporator by chamber control system, is controlled DC voltage size using PLC output end, is adjusted solid-state Module input current, controls the size of the solenoid valve amount of opening, so that the output quantity of R404 refrigerant is controlled, eventually by cold and hot flat Weighing apparatus adjusts temperature plateau in chamber.

A kind of hot test of the utility model dehumidifies condensing unit, as shown in Figure 1, include condenser pipe 1, wherein condenser pipe 1 Import and temperature test chamber in throttle valve connection, 404 stage compressors in the outlet and temperature test chamber of condenser pipe 1 connect It connects, insulating tube 2 is provided with outside condenser pipe 1, insulating tube 2 is the copper pipe that diameter is about Ф 50mm, and insulating tube 2 is equipped with multiple air inlets Mouth 3 and air outlet 4.As shown in figure 1 shown in " wind direction ", several along 2 diametrical direction through-hole of insulating tube, the hole for entering the wind side is referred to as Air inlet, the other side on 180 ° of directions is then air outlet.

The shape of condenser pipe 1 is bending or helical form, not increase cryosurface in 8 effective length of temperature test chamber Product.

Through simulation test repeatedly, condenser pipe 1 is the copper pipe that diameter is Ф 5mm- Ф 10mm, if the copper pipe excessive using diameter As condenser pipe, it is excessive to exhale cooling capacity, will affect the temperature inside the box balance, thus copper pipe diameter be not easy it is excessive.

In order to preferably play insulation effect, it can be coated with heat-preservation cotton in insulating tube 2, not block 3 He of air inlet Air outlet 4 is advisable.

The bottom of condenser pipe 1 is equipped with multiple discharge outlet 7.

When high temperature low humidity is tested, air flow direction in temperature test chamber 8: air is flowed into from cabinet original return air inlet in case, successively After evaporator, heating wire, blown out by being mounted on the blower motor above cabinet from former air outlet；During test carries out, Cabinet is almost a confined space, and air-flow is blown out by air outlet, and cabinet return air inlet is flowed to after chamber door reflects.Because removing wet condensation Device is mounted at cabinet return air inlet, and air inlet is vertical with chamber door, as long as air-flow flows through cabinet return air inlet, will there is major part Air enters the air inlet 3 of insulating tube 2 in dehumidifying condensing unit, because of the R404 that the temperature that circulates in condenser pipe 1 is about -37 DEG C Refrigerant can make the moisture rapid condensation in air, adhere to, and in 1 surface frosting of condenser pipe.So circulation is repeatedly, i.e., reachable To the effect of rapid moisture removal, the requirement of opposite humid control when fully meeting standard for hot test.

Condenser pipe 1 stretches out outside temperature test chamber case 8 under the protection of insulating tube 2, insulating tube 2 is outer and cabinet contact position and In managing at collar extension, sealed using high-low temperature resistant sealant.In order to control, only starting hot test is removed under high-temperature dehumidification operating condition Import barrier solenoid valve 5 is arranged, cold in wet condensation device between the throttle valve in the import and temperature test chamber 8 of condenser pipe 1 Control of export solenoid valve 6 is set between 404 stage compressors in the outlet and temperature test chamber 8 of solidifying pipe 1.As shown in Fig. 2, into The import/export electromagnetic valve coil of mouth control solenoid valve 5 and control of export solenoid valve 6 is connected to the heating system of temperature test chamber 8 On, as long as heating system is started to work in hot test, import/export solenoid valve is attracted, and pipeline is logical.It is incited somebody to action in high temperature set temperature When reaching, R404 high temperature compressor starts, and the extremely low R404 liquid refrigerant of circulating temperature, starts to dehumidify in condenser pipe.

Certainly, in low-temperature test, in order to avoid starting dehumidification by condensation device when heating system work, in import/export electricity Route between 8 heating system of magnet valve coil and temperature test chamber is equipped with a toggle switch, pushes in high-temperature dehumidification test It is automatic to enable the power supply of temperature test chamber heating system；In high temperature but toggle switch is in middle position when not controlling humid test, dehumidifies Condensing unit does not start；If require dehumidifying under special circumstances, toggle switch can be pushed manually, starting is filled except wet condensation It sets.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (9)

1. The condensing unit 1. a kind of hot test dehumidifies, which is characterized in that including condenser pipe (1), be provided with outside the condenser pipe (1) Insulating tube (2), the insulating tube (2) are equipped with multiple air inlets (3) and air outlet (4).
2. The condensing unit 2. hot test as described in claim 1 dehumidifies, which is characterized in that the shape of the condenser pipe (1) is Bending or helical form.
3. The condensing unit 3. hot test as claimed in claim 1 or 2 dehumidifies, which is characterized in that the condenser pipe (1) is diameter For the copper pipe of Ф 5mm- Ф 10mm.
4. The condensing unit 4. hot test as described in claim 1 dehumidifies, which is characterized in that the insulating tube (2) is coated with Heat-preservation cotton.
5. The condensing unit 5. hot test as described in claim 1 dehumidifies, which is characterized in that condenser pipe (1) bottom is equipped with Discharge outlet (7).
6. 6. such as claim 1,2,4 or 5 described in any item hot tests dehumidifying condensing units, which is characterized in that the condensation The throttle valve managed in the import and temperature test chamber of (1) connects, 404 in the outlet and temperature test chamber of the condenser pipe (1) Stage compressor connection.
7. The condensing unit 7. hot test as claimed in claim 6 dehumidifies, which is characterized in that the import of the condenser pipe (1) with Import barrier solenoid valve (5) are set between throttle valve in temperature test chamber, the outlet of the condenser pipe (1) and temperature test chamber In 404 stage compressors between be arranged control of export solenoid valve (6).
8. The condensing unit 8. hot test as claimed in claim 7 dehumidifies, which is characterized in that the import barrier solenoid valve (5) It is connected in temperature test chamber heating system with the import/export electromagnetic valve coil of the control of export solenoid valve (6).
9. The condensing unit 9. hot test as claimed in claim 8 dehumidifies, which is characterized in that the import/export electromagnetic valve coil Route between temperature test chamber heating system is equipped with toggle switch.