CN1020302C - Capillary thermal regulating valve and its foxing method - Google Patents

Abstract

The present invention provides a capillary thermal regulating valve which is suitable for the application of a miniature refrigeration system. Temperature sensing agent which is filled at the inner part of the capillary thermal regulating valve can be affected by external temperature on the outer surface of the valve to change the resistance of cryogen passing through the valve. The present invention which is arranged on an air-return pipe of a refrigeration system can obtain the effect that the flow rate of the cryogen is varied along with the variation of working conditions. The refrigeration capability of a system is performed sufficiently, and thereby, the energy consumption of the refrigeration system is reduced.

Description

Capillary thermal regulating valve and its foxing method

The present invention relates to a kind of flow regulator of refrigeration system, the refrigerant flow controlling device that particularly a kind of suitable refrigerator, air conditioner are used.

Advantages such as in small refrigeration systems, capillary tube is used as the throttling device widely, and it has reliable operation, and starting torque is little, and cost is low, easy for installation, but its resistance state can't regulate, the pressure difference at two ends is depended in the variation of flow.When outside air temperature or heat load variation, the variation of its flow can not be satisfied the requirement that working condition changes, and influences the performance of refrigerant system capacity, and energy consumption is increased.The clear JP54-73345 of patent documentation has proposed a kind of refrigerant flow control device, can reach the requirement that refrigerant flow changes with working condition, and this technology is to have increased electric heater and semi-conductor electricity subcircuit on existing expansion valve temperature-sensitive is full.Its control procedure complexity, the rate of breakdown height, and when having lost capillary-compensated, the advantage that compressor starting torque is little.

The objective of the invention is to: provide a kind of and can regulate the capillary resistance state by the cooling condition condition automatically, simple in structure, reliable operation still keeps the flow control valve of the little advantage of capillary tube starting torque, plays and improves the effect of refrigeration efficiency than, saving power.

Use the flow regulator that the present invention makes, compare, have remarkable energy saving effect with the device that only adopts capillary-compensated, compare with the device that above-mentioned patent documentation provides, have the functional reliability height, cost is low, advantages such as installation is simple, and compressor starting torque is little.

Below in conjunction with drawings and Examples the present invention is done detailed description.

The structural representation of Fig. 1 capillary flow adjustable valve

Fig. 2 capillary flow adjustable valve working principle schematic representation

Referring to Fig. 1, the profile of apparatus of the present invention is a cylindrical body, by front valve shell 1, regulates sealing screw 2, outer tube 3, diaphragm 5, and gland nut 7, slip pipe 11, spool 12, spring 13, rear valve body 14, capillary tube 15 is formed.Refrigeration agent flows into from front valve shell 1 left end, and by adjustable clearance 9, the hole 10 of spool 12 is from capillary tube 15 outflows of rear valve body 14 right-hand members.Temperature sensing material screw 2 injects annulus cylindrical space 6 and 19, the two is 4 connections through the hole, temperature sensing material is subjected to the influence of external temperature by outer tube 3, making its volume 6 change the power and the spring 13 that form makes spool 12 move axially together, regulate the size in gap 9, change the resistance of valve convection cell, thereby regulate flow.Outer tube 3, front valve shell 1, rear valve body 14, capillary tube 15 are tightly connected into an integral body.

Apparatus of the present invention are with compressor 16, condenser 17, and vaporizer 18 when muffler 20 and some other necessary parts (not shown)s constitute refrigeration system, can become a self-regulating sealing refrigeration system of flow.Its working principle as shown in Figure 2, when heat load increase or refrigeration agent undersupply, the temperature of muffler 20 raises, by outer tube 3 volume of temperature sensing material 6 is increased, promote spool 12 and be moved to the left, gap 9 is increased, the resistance of valve reduces, flow increases, and the vaporizer liquid supply rate increases, and refrigerating capacity increases.When heat load reduces or refrigeration agent is supplied with when excessive, the muffler temperature descends, and opposite course of action is arranged, and flow is reduced.Thereby make refrigeration system always work in the higher state of usefulness, given play to maximum refrigeration usefulness, reduce power consumption.

Claims (2)

1, a kind of capillary flow adjustable valve, particularly a kind ofly change the valve can regulate the resistance state automatically according to the cooling condition condition, feature of the present invention is: profile is a cylindrical body, and capillary tube inserts valve inner from both ends of the surface, by front valve shell 1, rear valve body 14, outer tube 3 constitutes a space of storing temperature sensing material, and the volume of temperature sensing material 6 can change with external temperature, and and spring 13 actings in conjunction, spool 12 is moved vertically, regulate the size in gap 9, change the resistance of valve.

2, by the described valve of claim 1, it is characterized in that: outer tube 3, front valve shell 1, rear valve body 14, capillary tube 15 are tightly connected whole.

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