CN101929773A

CN101929773A - Ice maker

Info

Publication number: CN101929773A
Application number: CN2010102754005A
Authority: CN
Inventors: 李洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2010-12-29

Abstract

The invention discloses an ice maker. The ice maker comprises a condenser, an evaporator and a multisource load self-balancing heat pump, wherein a refrigerant circularly flows in a pipeline between the condenser and the evaporator; the multisource load self-balancing heat pump is used for supplying stable circulating hot water and circulating cold water for a system; the cold water of the multisource load self-balancing heat pump is communicated with the condenser of the ice maker; and the hot water of the multisource load self-balancing heat pump is communicated with the evaporator of the ice maker. Circulating low-temperature water is used for the condensation side and ice-collecting can be guaranteed without limiting water quantity, so the ice maker has the advantages of stable working condition, stable ice yield in all the year round, shortened ice-collecting time, capacities of optimizing the design of a compressor and optimizing the efficiency of the system, reduction in liquid-returning probability and great improvement on reliability.

Description

A kind of ice machine

Technical field

The invention belongs to art of refrigeration units, particularly relate to a kind of ice machine.

Background technology

Of the present invention is relatively large ice machine, generally is applied to hotel, dining room etc. and uses the bigger place of ice amount, and in these occasions, the ice-making capacity under the rated power is the most important index of weight ice maker performance.

Traditional ice machine is a simple refrigerant loop, the compressed machine of cold-producing medium is air-breathing, and---compression---exhaust---condensation (liquefaction) back is to choke valve, low-temperature evaporation heat absorption with-10 ℃ to-18 ℃ is vaporized in evaporimeter again, water can condense into ice sheet at evaporator surface like this, and this process is called ice making.After ice cube reaches desired thickness, the hot gas of compressor discharge is imported the evaporimeter loop of ice machine by the bypass hot-blast valve.Just formed the film of one deck water like this between ice and evaporimeter ice pan wall, this layer moisture film will freely drop by the effect of gravity at ice, and this process is called ice collection.As seen, the working cycles of ice machine comprises ice making and two processes of ice collection, and both speed all will have influence on ice-making capacity and efficiency.

Because ice collection relies on the hot-gas bypass of compressor to realize, hot air temperature can not be too low when considering ice collection, therefore the water yield to water-cooled condenser will control to the very little pressure at expulsion that improves compressor in the ice machine of water-cooling type, therefore system effectiveness is low, the hot-gas bypass ice collection time is also longer, directly influences 24 hours ice capacities and system effectiveness.

Summary of the invention

The purpose of this invention is to provide the higher ice machine of a kind of ice making efficient.

For this reason, the technical solution used in the present invention is such: a kind of ice machine, comprise condenser and evaporimeter, circulate in the pipeline of cold-producing medium between, it is characterized in that: it also comprises multi-source load self-balance type heat pump, for system provides stable circulating hot water and circulating water, the cold water of multi-source load self-balance type heat pump communicates with the ice machine condenser; The hot water of multi-source load self-balance type heat pump communicates with ice machine evaporator.

Further, described multi-source load self-balance type heat pump is made up of a compressor, three heat exchangers, an expansion valve and a solenoid operated four-way valve, be linked as the loop by pipeline, three heat exchangers lay respectively at compressor between the solenoid operated four-way valve, solenoid operated four-way valve is to the pipeline between the compressor, between the port of solenoid operated four-way valve.

Multi-source load self-balance type heat pump of the present invention is a kind of more advanced heat-exchange device, and based on heat pump principle, stable hot water can be provided simultaneously, and (operated by rotary motion is at 45-55 ⁰C) and cold water (operated by rotary motion is at 7-12 ⁰C), can integrate cooling and heating load, the heat that the refrigeration duty the inside is shifted out satisfies the needs of thermic load, thereby realizes significantly energy-conservation.The absorption system that the long-range company in Changsha produces includes a gas generator, also can provide extra hot water by the combustion gas heating in refrigeration, because hot and cold water is provided simultaneously, this system also can realize this efficient ice making scheme.But do not have effective balanced exchange between the cooling and heating load of the cold and heat combined supply of absorption system.The heat release that the present invention can also directly use the ice machine heat reclamation device to reclaim and store its condenser, in ice collection, be used for ice collection, but will cause condensing pressure to rise and cause the decline of ice making cycle refrigerating efficiency and refrigerating capacity with the effect that reaches quick ice collection because the hot water temperature who needs is higher.So described in the preferred version of the present invention is a kind of better multi-source load self-balance type heat pump.

The present invention adopts the hot water of multi-source balancing the load type source pump to assist the ice collection of ice machine, the cold water that unit provides cycles through the water-cooled condenser of ice machine and takes away the condensation heat radiation, traditional ice machine ice collection relies on hot-gas bypass to realize, because hot air temperature can not be too low when considering ice collection, therefore the water yield to water-cooled condenser controls to the very little pressure at expulsion that improves compressor, system effectiveness is low, and the hot-gas bypass ice collection time also directly influences 24 hours ice capacities and system effectiveness.Because it is free that the hot water that multi-source balancing the load type source pump produces mainly from the condensation heat release of refrigeration duty, is close to, and adopts 55 ⁰C hot water assists ice collection to shorten the ice collection time significantly, thereby increases substantially the efficient and the ice capacity of ice machine.Ice machine is because condensation one side circulation water at low temperature, need not to limit the water yield and guarantee ice collection, operating mode is stable, ice capacity is stable throughout the year, the ice collection time shortens, and makes compressor can be optimized in design, makes system effectiveness optimization, and return the liquid probability and reduce, reliability will increase considerably.

On the loop of multi-source load self-balance type heat pump of the present invention three heat exchangers, a solenoid operated four-way valve are arranged, its special Position Design makes three heat exchangers, having fixed exothermic effects for one is used for heating, fixed heat-absorbing action for one and be used for freezing, another is switchable heat exchanger.Cooling and heating load all less than situation about satisfying under, can freeze simultaneously and heat; Under the situation about in refrigeration duty, being satisfied, corresponding heat absorption heat exchanger water circulating pump or blower fan are out of service, the switchable heat exchanger of another one can switch to the heat absorption operational mode and replace fixing endothermic heat exchanger, allow the heat exchanger of fixedly heat release continue heat production, thereby the function that realization heats separately is till thermic load satisfies; Under the situation about in thermic load, being satisfied, corresponding heat release heat exchanger water circulating pump or blower fan are out of service, the switchable heat exchanger of another one can switch to the heat release operational mode and replace fixing heat release heat exchanger, allow the heat exchanger of fixing heat absorption continue heat absorption, thereby realize the function of separate refrigeration, till refrigeration duty satisfies.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

The specific embodiment

Referring to accompanying drawing.In the present embodiment, 7 is the ice machine condenser, and 8 is the ice machine evaporator ice pan, circulates in the loop that the cold-producing medium between constitutes, and 9 is hot gas bypass valve, and the hot gas that condenser 7 is produced is delivered to evaporimeter ice pan 8 again.In traditional ice machine, complete ice machine of the above basic comprising, ice collection mainly is to rely on hot gas bypass valve 9; And in the present embodiment, hot gas bypass valve 9 only plays the effect of auxiliary ice collection, mainly still relies on other parts of machine.

Present embodiment also has multi-source balancing the load type source pump, comprising 1, three heat exchanger of

compressor

2,3,4, solenoid operated four-way valve 5 and expansion valve 6; Heat exchanger 2 is between the inflow end of compressor 1 and solenoid operated four-way valve 5, and heat exchanger 4 is between the outflow end and compressor 1 of solenoid operated four-way valve 5, and heat exchanger 3 is between two bypass ends of solenoid operated four-way valve 5; Above critical piece constitutes a loop, and cold-producing medium circulates therein.About this multi-source balancing the load type source pump, describing more specifically can be referring to the Chinese patent 2010101004622 of Li Gang application.

In the present embodiment, two refrigerant circulation loops are relatively independent, and pipeline is represented with solid line; Have recirculated water to communicate between the two, the pipeline of recirculated water is represented with dotted line.

Heat exchanger 4 is the heat absorption heat exchanger, and the cold water that it produced links to each other with the condenser of ice machine 7, is used to absorb the heat that the condenser 7 of ice machine distributes, and has higher efficient; Heat exchanger 2 is the heat release heat exchanger, and the hot water that it produced links to each other with the evaporimeter ice pan 8 of ice machine, is used for the ice collection of ice machine, can shorten the ice collection time greatly, thereby improves ice machine efficient.

Claims

1. ice machine, comprise condenser and evaporimeter, circulate in the pipeline of cold-producing medium between, it is characterized in that: it also comprises multi-source load self-balance type heat pump, for system provides stable circulating hot water and circulating water, the cold water of multi-source load self-balance type heat pump communicates with the ice machine condenser; The hot water of multi-source load self-balance type heat pump communicates with ice machine evaporator.

2. a kind of ice machine according to claim 1, it is characterized in that: described multi-source load self-balance type heat pump is made up of a compressor, three heat exchangers, an expansion valve and a solenoid operated four-way valve, be linked as the loop by pipeline, three heat exchangers lay respectively at compressor between the solenoid operated four-way valve, solenoid operated four-way valve is to the pipeline between the compressor, between the port of solenoid operated four-way valve.