WO2013174218A1

WO2013174218A1 - Contact-type ice making device with change in phases of secondary refrigerant, ice slurry water source heat pump, and hydro-heater

Info

Publication number: WO2013174218A1
Application number: PCT/CN2013/075565
Authority: WO
Inventors: 罗良宜
Original assignee: Luo Roy
Priority date: 2012-05-24
Filing date: 2013-05-13
Publication date: 2013-11-28

Abstract

Disclosed is a contact-type ice making device with a change in the phases of a secondary refrigerant, an ice slurry water source heat pump, and a hydro-heater. The contact-type ice making device with a change in the phases of the secondary refrigerant comprises an evaporator, a blower and a condenser connected to one another through pipelines; the pipeline of the evaporator and the condenser is provided with a control valve, and a cold source heat exchanging element is provided in the condenser.

Description

Contact type refrigerant phase change ice making device, ice water source heat pump and water energy water heater

The invention relates to the technical field of ice making devices, in particular to a contact type refrigerant phase change ice making device, an ice water source heat pump and a water energy water heater. The application is based on the application date of May 24, 2012, the application number. The Chinese utility model patent for 201220237000.X, the Chinese utility model patent with application number 201220608228.5 on November 18, 2012, and the Chinese utility model with application number 201320180232.0 on April 11, 2013 The contents of the above-identified patent application are incorporated herein by reference.

Background technique

Ice storage technology has a variety of ice making methods, and these ice making methods can be divided into two categories. The first type is direct heat exchange between water and refrigerant. It has high heat exchange efficiency, high heat transfer capacity, and ice cream type ice. The load of the ice melting process is good, but the purity of the refrigerant is affected by the formation of corrosive gases. Affecting the operation of the chiller has been basically eliminated. The second type is the indirect heat exchange between water and refrigerant. The indirect heat exchange between water and cold source includes static ice making and dynamic ice making: 1. Static ice making device, which is outside the cooling pipe or in the ice container. Ice, the ice itself is in a relatively static state. During the static ice making process, as the amount of ice is increased, the thermal resistance between the water and the cold source is gradually increased, the ice making rate is reduced, and the energy loss is increased. Although the static ice making system is simple, stable and easy to implement, it has become the mainstream in the application of ice storage system. However, it has low heat exchange efficiency in the static formation process of ice, and poor load followability in the ice melting process. The reliability requirements are high and it is not easy to overhaul. The heat exchanger piping is complicated to arrange, the cost is high, and the investment is large, especially the ultra-large-scale low-cost ice making cannot be realized. 2. Dynamic ice making device, ice crystals and ice granules are formed during the dynamic ice making process, and ice crystals and ice granules are in motion. The cold-carrying agent used for dynamic ice making includes supercooled water, heat-conducting liquid and aqueous solution, etc. The heat transfer surface grows, so the thermal resistance between the water and the cold source does not change with the progress of the ice making process. The heat exchange efficiency is maintained during the ice making process, and the refrigerator can be operated under better conditions; the ice cream is generated. Type ice, ice-filling process load followability is good, but the system is complex, poor stability, the coolant in the heat exchange process by liquid flow heat transfer, heat transfer efficiency is still not too high, heat transfer capacity is still relatively small.

The ground source/water source heat pump unit is the current high-efficiency energy-saving demonstration and promotion technology. Its advantages are high efficiency, energy saving, stable and reliable operation, long life, small space occupation, easy maintenance, flexible installation, and simultaneous cooling and heating. At present, the biggest problem of ground source/water source heat pump units in the northern region is that the winter water source temperature is low and the heat load is low. In order to increase the heat supply, the geothermal well/water intake facility has to be greatly increased. The conventional water source heat pump can only extract a small amount of low temperature water source in winter. The sensible heat is used to heat, It is impossible to effectively extract a large amount of phase change heat that uses water to become ice for heating, which causes the ground source/water source heat pump unit in the northern region to supplement a large amount of auxiliary high-grade heat in the winter, which increases the investment of geothermal wells/water intake facilities and auxiliary heating facilities. , also increase high-grade energy consumption and increase operating costs.

Summary of the invention

The first of the present invention is to overcome the direct heat exchange between water and refrigerant to generate corrosive gas, affect the purity of the refrigerant, affect the operation of the refrigerator, and overcome the existence of heat transfer efficiency in the static formation process of the existing static ice making device. Low, the ice load process has poor load followability, the heat exchange pipeline freezes in ice, the reliability is high and it is not easy to overhaul, the heat exchanger pipeline is complicated to arrange, the cost is high, and the investment is large, especially the insufficiency of ultra-large-scale low-cost ice making, and In order to overcome the complexity and stability of the existing dynamic ice making device system, the ice making medium transfers heat by liquid flow in the heat exchange process, the heat exchange efficiency is still not too high, and the heat transfer capacity is still relatively small, and the present invention provides The invention relates to a contact type refrigerant phase change ice making device, wherein the contact type refrigerant phase change ice making device adopts a brine carrier, and during the heat and cold transfer process, the liquid carrier liquid phase changes, and the liquid brine passes the evaporation. Direct heat exchange with water to form ice cream type ice, the gaseous refrigerant directly radiates heat to the cold source through condensation, thus achieving the contact type refrigerant The variable ice making device has high heat exchange efficiency, large heat transfer capacity, ice cream type ice formation, good load following in the ice melting process, does not affect the operation of the refrigerator, simple structure, low cost, low investment, good stability and reliable operation. In particular, it can achieve the goal of ultra-large-scale low-cost ice making.

A first object of the present invention is achieved by the following techniques: A contact type refrigerant phase change ice making apparatus comprising an evaporator, a fan and a condenser interconnected by a pipe, the evaporator and the condenser A control valve is disposed on the pipeline, and the condenser is provided with a cold source heat exchange element, and the cold source heat exchange component may be an evaporator of the refrigerator or a heat exchanger of a natural cold source. The specific circulation process is that the gaseous refrigerant in the evaporator enters the condenser through the fan, and the gaseous refrigerant in the condenser is directly discharged to the cold source heat exchange element by condensation into a liquid state, and the liquid brine enters the evaporator through the control valve. Below the water surface, the liquid brine is directly contacted with water and then evaporated to a gaseous state for efficient heat exchange. The water releases the phase change heat into ice cream type ice, and the brine continuously circulates. The evaporator and the condenser can also be combined into one. The cold source heat exchange element can be directly placed, the lower part is the evaporator, the upper part is the condenser, and the fan is not needed. The gaseous refrigerant directly radiates heat to the cold source heat exchange element through condensation. The brine condensate flows directly into the water body. The brine contains a low boiling point material such as propane, n-butane or the like which is poorly soluble in water, preferably n-butane.

Wherein, the contact type refrigerant phase change ice making device has a pressure maintaining device; the evaporator has an inlet pipe and an ice discharging pipe, and the inlet pipe has a water pump; wherein the brine enters the evaporation through the pipeline Below the surface of the water.

Wherein, the temperature of the brine in the condenser is controlled to be above o°c, and the water vapor in the brine can be prevented from frosting on the cold source heat exchange element, and the temperature of the brine in the evaporator is controlled at Below o°c.

The second of the present invention is to overcome the conventional water source heat pump in winter, only a small amount of sensible heat of the low temperature water source can be extracted for heating, The invention can provide an ice slurry water source heat pump, and the ice water source heat pump uses a conventional water source heat pump combined with a contact type refrigerant phase change ice making device. The contact type refrigerant phase change ice-making device has a coolant, and the liquid-cooling agent undergoes gas-liquid phase change during the heat-cooling transfer process, and the liquid brine is directly mixed with water to evaporate, and the absorbed water becomes ice phase change. Heat, water releases the phase change heat into ice cream type ice, and the gaseous refrigerant passes through the condensing and heat release to the water source heat pump evaporator, so that the ice water source heat pump can effectively extract a large number of phase changes using water to become ice. Heat is used for heating purposes.

The second object of the present invention is achieved by the following technology: An ice water source heat pump manufactured by a contact type refrigerant phase change ice making device, comprising a water source heat pump and a contact type refrigerant phase change ice making device, The cold source heat exchange element uses a water source heat pump evaporator, and the water source heat pump and the contact type refrigerant phase change ice making device are connected by a water source heat pump evaporator, and the water source heat pump evaporator is placed in the condenser. The ice water source heat pump uses a conventional water source heat pump combined with a contact type refrigerant phase change ice making device, and the gaseous brine in the evaporator enters the condenser through the fan, and the gaseous refrigerant is directly discharged into the liquid by condensation in the condenser. The water source heat pump evaporator, the liquid brine enters the water surface of the evaporator through the control valve, the liquid brine directly contacts the water and evaporates into a gaseous state for efficient heat exchange, and the water releases the phase change heat into ice cream type ice, and the cold load The agent continues to circulate. The evaporator and the condenser can also be integrated into one. The water source heat pump evaporator can be directly placed in the upper part, the lower part is the evaporator, the upper part is the condenser, and the fan is not needed. The gaseous refrigerant directly radiates heat to the water source heat pump evaporator through condensation. The brine condensate flows directly into the water. The brine contains low-boiling substances such as n-butane which are poorly soluble in water.

The third aspect of the present invention is to overcome the deficiencies that conventional water source heat pump water heaters can only extract a small amount of sensible heat from a low temperature water source for heating in winter, and cannot effectively extract a large amount of phase change heat using water to ice for heating, and the present invention provides A water energy water heater, the water energy water heater adopts a conventional water source heat pump water heater combined with a contact type refrigerant phase change ice making device, and the contact type refrigerant phase change ice making device has a cold carrying agent, and the cold carrying agent in the hot and cold transfer process Gas-liquid phase change occurs, the liquid brine is directly mixed with water and evaporated, the absorbed water becomes the phase change heat of ice, the water releases the phase change heat into ice-cream type ice, and the gaseous refrigerant passes through the condensation and then releases heat to the water source. The heat pump evaporator is such that the water energy water heater can effectively extract a large amount of phase change heat using water to become ice for heating purposes.

The third object of the present invention is achieved by the following technologies: A water energy water heater manufactured by using a contact type refrigerant phase change ice making device, comprising a water source heat pump water heater and a contact type refrigerant phase change ice making device, The cold source heat exchange element adopts a water source heat pump water heater evaporator, and the water source heat pump water heater and the contact type refrigerant phase change ice making device are connected by a water source heat pump water heater evaporator, and the water source heat pump water heater evaporator is placed in the condensation In the device. The water energy water heater adopts a conventional water source heat pump water heater combined with a contact type refrigerant phase change ice making device. The specific circulation process is that the gaseous brine in the evaporator enters the condenser through the fan, and the gaseous refrigerant passes through the condenser to condense into The liquid is directly exothermic to the water source heat pump water heater evaporator, and the liquid brine enters the water surface of the evaporator through the control valve, and the liquid brine is directly connected with the water. The contact is evaporated to a gaseous state for efficient heat exchange, and the water releases the phase change heat into ice cream type ice, and the brine continuously circulates. The brine contains low-boiling substances such as n-butane which are poorly soluble in water.

The beneficial effects of the invention are as follows: The contact type refrigerant phase change ice making device of the invention has high heat exchange efficiency, large heat transfer capacity, ice cream type ice formation, good load followability in the ice melting process, and does not affect the operation of the refrigerator. Simple structure, low cost, low investment, good stability and reliable operation, especially for ultra-large-scale low-cost ice making. The ice slurry water source heat pump made by the contact type refrigerant phase change ice making device can effectively extract a large amount of phase change heat using water to ice for heating, and efficiently and stably improve the heat utilization efficiency of the water source. The water energy water heater made by the contact type refrigerant phase change ice making device can effectively extract a large amount of phase change heat using water to ice for hot water production, and efficiently and stably improve the heat utilization efficiency of the low temperature water source.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

Reference numeral

1—Evaporator 2—Fan 3—Condenser

4—Cold source heat exchange element 5—Control valve.

detailed description

The present invention is further described in the following with reference to the embodiments and the accompanying drawings, which are not intended to limit the invention.

Example 1.

Referring to Fig. 1, a contact type refrigerant phase change ice making device comprises an evaporator 1, a fan 2 and a condenser 3 connected to each other through a pipeline, and the tubes of the evaporator 1 and the condenser 3 are provided with control a valve 5, the condenser 3 is provided with a cold source heat exchange element 4, and the cold source heat exchange element 4 may be a refrigerator evaporator or a natural cold source heat exchanger. In this embodiment, a refrigerator evaporator is used. The gaseous brine in the evaporator 1 enters the condenser 3 through the fan 2, and the gaseous brine is condensed into a liquid state in the condenser 3 to directly radiate heat to the cold source heat exchange element 4 refrigerator evaporator, liquid brine The control valve 5 enters below the water surface of the evaporator 1, and the liquid brine is directly contacted with water and evaporated to a gaseous state for efficient heat exchange, and the water releases the phase change heat into ice cream type ice. The contact type refrigerant phase change ice making device has a pressure holding device. The contact type refrigerant-carrying phase change ice-making device uses n-butane as a brine. The evaporator 1 has an inlet pipe and an outlet pipe, and a water pump is also provided on the inlet pipe. The temperature of the brine in the condenser 3 is controlled to be above 0 ° C, and the water vapor in the brine can be prevented from frosting on the cold source heat exchange element 4, and the temperature of the brine in the evaporator 1 is controlled. Below 0 °C. The brine enters the water surface of the evaporator 1 through the pipeline.

Example 2. Referring to Fig. 1, the difference between this embodiment and the embodiment 1 is that: an ice slurry water source heat pump manufactured by using a contact type refrigerant phase change dynamic ice device, comprising a water source heat pump and a contact type refrigerant phase change ice making The water source heat pump and the contact type refrigerant phase change ice making device are connected by a water source heat pump evaporator, and the water source heat pump evaporator is placed in the condensation. In the 3rd. The ice water source heat pump uses a conventional water source heat pump combined with a contact type refrigerant phase change ice making device, and the gaseous brine in the evaporator 1 enters the condenser 3 through the fan 2, and the gaseous brine is condensed in the condenser 3 by condensation. The liquid is directly exothermic to the water source heat pump evaporator, and the liquid brine enters the water surface of the evaporator 1 through the control valve 5, and the liquid brine is directly contacted with water and then evaporated into a gaseous state for efficient heat exchange, and the water releases the phase change heat into The ice cream type ice is continuously circulated, and the phase change heat of the water becoming ice is absorbed by the water source heat pump evaporator for heating, and the brine of the present embodiment is n-butane.

Example 3.

Referring to Fig. 1, the difference between this embodiment and the embodiment 1 is: a water energy water heater manufactured by using a contact type refrigerant phase change ice making device, including a water source heat pump water heater and a contact type refrigerant phase change ice making The water source heat pump water heater and the contact type refrigerant phase change ice making device are connected by a water source heat pump water heater evaporator, and the water source heat pump water heater evaporator is disposed. In the condenser 3.

The water energy water heater adopts a conventional water source heat pump water heater combined with a contact type refrigerant phase change ice making device, and the specific circulation process is that the gaseous brine in the evaporator 1 enters the condenser 3 through the fan 2, and the gaseous refrigerant in the condenser 3 By condensing into a liquid direct heat release to the water source heat pump water heater evaporator, the liquid brine enters the water surface of the evaporator 1 through the control valve 5, the liquid brine is directly contacted with water and then evaporated into a gaseous state for efficient heat exchange, water discharge The phase change heat becomes ice cream type ice, and the brine continuously circulates. The brine is made of n-butane, which facilitates the system to operate at atmospheric pressure (near 1 atmosphere), simplifying the system structure and reducing system investment costs.

The above content is only a preferred embodiment of the present invention, and those skilled in the art will have a change in the specific embodiment and application scope according to the idea of the present invention. The content of the present specification should not be construed as the present invention. limits. Industrial applicability

The contact type refrigerant phase change ice making device of the invention has high heat exchange efficiency, large heat transfer capacity, ice cream type ice formation, good load followability in the ice melting process, no influence on the operation of the refrigerator, simple structure and low cost investment. Small, stable, reliable, especially for ultra-large-scale low-cost ice storage. The ice water source heat pump made by the contact type refrigerant phase change ice making device can effectively extract a large amount of phase change heat using water to become ice for heating, and efficiently and stably improve the heat utilization efficiency of the water source. The water energy water heater manufactured by the contact type refrigerant phase change ice making device can effectively extract a large amount of phase change heat using water to ice for hot water production, and efficiently and stably improve the heat utilization efficiency of the low temperature water source, and the invention creates It can be mass produced and has a good market prospect.

Claims

claims

1. A contact type refrigerant phase change ice making device, including an evaporator, a fan and a condenser connected to each other through pipelines, with control valves provided on the pipelines of the evaporator and condenser, characterized by: The condenser is equipped with a cold source heat exchange element.

2. The contact type refrigerant phase change ice making device according to claim 1, characterized in that: the contact type refrigerant phase change ice making device has a pressure maintaining device.

3. The contact type refrigerant phase change ice making device according to claim 1, characterized in that: the brine of the contact type refrigerant phase change ice making device is n-butane.

4. The contact type refrigerant phase change ice making device according to claim 1, characterized in that: the evaporator has a water inlet pipe and an ice outlet pipe, and there is a water pump on the water inlet pipe.

5. The contact type refrigerant phase change ice making device according to claim 1, characterized in that: the temperature of the refrigerant in the condenser is controlled above 0°C, and the temperature of the refrigerant in the evaporator is controlled above 0°C. The temperature is controlled below 0°C.

6. The contact type secondary refrigerant phase change ice making device according to claim 1, characterized in that: the secondary refrigerant enters below the water surface of the evaporator through the pipeline.

7. An ice slurry water source heat pump manufactured using the contact type refrigerant phase change ice making device of claim 1, characterized in that: it includes a water source heat pump and a contact type refrigerant phase change ice making device, and the cold The source heat exchange element adopts a water source heat pump evaporator. The water source heat pump and the contact refrigerant phase change ice making device are connected through the water source heat pump evaporator. The water source heat pump evaporator is placed in the condenser.

8. A water energy water heater made by the contact type refrigerant phase change ice making device according to claim 1, characterized in that: it includes a water source heat pump water heater and a contact type refrigerant phase change ice making device, and the cooling medium phase change ice making device is characterized in that: The source heat exchange element adopts a water source heat pump water heater evaporator. The water source heat pump water heater and the contact refrigerant phase change ice making device are connected through the water source heat pump water heater evaporator. The water source heat pump water heater evaporator is placed in the condenser. .