CN2253815Y

CN2253815Y - Multi-compartment refrigerating device

Info

Publication number: CN2253815Y
Application number: CN 96231493
Authority: CN
Inventors: 朱日昭
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-25
Filing date: 1996-03-25
Publication date: 1997-05-07
Anticipated expiration: 2006-03-25

Abstract

The utility model relates to a multi-compartment refrigerating device, which is usually used in a refrigeration system, such as a double-temperature refrigerator, a double-temperature refrigerator counter, etc. The utility model is composed of the combination and the connection of choke devices, valves and controlled objects, and is characterized in that the valves or auxiliary capillary choke devices are connected in series on an evaporator, and auxiliary capillaries or valve choke devices are connected in parallel corresponding to both ends of the valves or the auxiliary capillary choke devices. In the system, through the control of the opening and the closing of the valves, not only the refrigerating capacity of each compartment can be carried out reasonable and precise distribution, but also when flow distribution is carried out, the delivery rate of each controlled object can be handled respectively, so as to reach the effect of energy saving.

Description

A kind of multi-chamber refrigerating plant

The utility model relates to especially chamber refrigerating plant between 2-3 of multi-chamber.

In two-door or multi-door refrigerator refrigerator-freezer, when by temperature-controlling chamber during greater than one, existing flow distribution of fluid is generally all carried out in the gating mode.For example the off-premises station in the air-conditioner drags unit in the multicell.This system uses valve more, controls also corresponding more with device.Chinese patent 89211091.0 " the cold coalignment of multi-door refrigerator " has proposed a kind of with the method for magnetic valve bypass in parallel with evaporimeter with the control assignment of traffic, problem that can fine solution assignment of traffic (thereby making accurately independent regulation of refrigerator the temperature inside the box), but need the occasion adjusted in the wide range greatly and not for the cryogenic temperature difference, say still undesirable from energy-conservation angle.

The purpose of this utility model is to propose the device that a kind of simple combination that adopts choked flow element and breakover element just reaches good temperature control distribution effects, it is particularly suitable for (the employing vapor compression system) middle-size and small-size multi-chamber refrigerating appliance, also can be used for other similar applications.

Technical solution of the present utility model is at the valve and the choke apparatus that are installed additional corresponding parallel connection by temperature-controlling chamber, the keying by this valve (general many use magnetic valves) with regulate the fluid inflow specified between the chamber.In the two-door refrigerator or refrigerator-freezer in two greenhouses, generally at the two ends in greenhouse valve in parallel and choke apparatus.

Characteristics of the present utility model are easy and effective.For example its use in two-storage temperature refrigerator (cabinet) not only can be carried out the preparation assignment of traffic well, and the difference of considering the temperature inside the box be provided with can also corresponding adjusting cold-producing medium throughput, reach rationally, control the temperature inside the box exactly and reach the purpose of economize on electricity.

Fig. 1 is that the utility model uses the flow chart of the preferential cooling of refrigerating chamber in two temperature refrigerators (cabinet).

Fig. 2 is that the utility model uses the flow chart of the preferential cooling of refrigerating chamber in two temperature refrigerators (cabinet).

Below in conjunction with description of drawings embodiment of the present utility model.

In flow process shown in Figure 1: 1 is freezer compressor; 2 is condenser; 5,7 are respectively refrigeration evaporator and refrigerating evaporator; 4 is the adjusting magnetic valve that the utility model added; 3,6 are respectively main capillary and assisted capillary.(need to prove: when cryogenic fluid only passed through capillary 3, corresponding evaporating temperature was a temperature of refrigerating chamber, and when the cryogenic fluid order passed through 3 and 6, then the refrigeration evaporator temperature should be complementary with refrigerating chamber).When system begins in startup or the running, the temperature inside the box height of refrigerating chamber 5 is in a certain correlation (higher limit between this room temperature setting area or treated a certain value), then magnetic valve V opens, this moment refrigeration system to participate in the operation part only be 3 because flow resistance is less, so cold-producing medium just enters 5 with big flow, because evaporation capacity is big, thereby evaporating pressure improves, the corresponding raising of evaporating temperature, and system has just obtained big coefficient of refrigerating performance.This process stopped when proceeding to 5 Room indoor temperatures and reaching another correlation (as the lower limit between this room temperature setting area or another relevant value), magnetic valve 4 cuts out, the high-temperature high-pressure refrigerant steam of compressor 1 discharge after this is after being condensed into liquid through condenser 2, earlier after capillary 3 and 6 throttlings directly enter refrigerating chamber 7 evaporations.Obviously, because capillary lengthening, the pipe resistance increases, thereby the cold-producing medium throughput reduces, because the swabbing action of compressor 1, the cold-producing medium evaporating temperature will reduce, and we have been reached the different purpose of evaporating temperature during the cooling of chamber between difference.

Different in the flow process shown in Figure 2 is freezing 7 preferential, and magnetic valve 4 is also by part 7 controls.Be characterized in that the sensible heat that flows out cold-producing medium from 7 also can obtain the part utilization in refrigeration evaporator 5, efficient is higher.

In the three-door refrigerator in three greenhouses, can adopt roughly the same scheme, the cold-producing medium of handling the evaporimeter in the 3rd greenhouse is evaporated by the surplus of the cold-producing medium by second greenhouse, the temperature difference in second and third greenhouse is relatively-stationary in this scheme, but the temperature difference in first and second greenhouse is adjustable by valve opening and closing, the bistable electromagnetic valve of magnetic valve preferred 85201056.

Claims

1. the refrigerating plant in greenhouse between more than a kind, comprise series connection compressor (1), condenser (2), main capillary (3), organize conventional cooling module and runners such as evaporimeter more, it is characterized in that series connection one valve or assisted capillary choke apparatus on an evaporimeter, corresponding to its two two ends assisted capillary in parallel or valve choke apparatus.

2. by the described refrigerating plant of claim 1, it is characterized in that in the two-door refrigerator or refrigerator-freezer in two greenhouses, at the two ends in greenhouse valve in parallel and choke apparatus.

3. by claim 1,2 described refrigerating plants, it is characterized in that valve selects bistable electromagnetic valve for use.