CN206709457U - A kind of freezer energy-conservation defrosting system - Google Patents

Abstract

The utility model provides a kind of freezer energy-conservation defrosting system, for carrying out defrosting removal to the frost on the evaporation coil surface in freezer, it is characterised in that including：Liquid distribution, for the water drenching of evaporation coil surface, including it is arranged on the drenching sprayer above evaporation coil and the first flow regulating valve connected with the drenching sprayer inlet end；Water storage device, for collecting and storing from the cold water that defrosting flows down on evaporation coil surface, including it is arranged on the drip pan below evaporation coil and the storage tank connected by pipeline with drip pan；Hot-water supply, for providing hot water to liquid distribution, including it is arranged on the hot water storage tank above storage tank, the condenser coil being arranged in the hot water storage tank, the defrosting water pump and the first three-way piece connected with hot water storage tank water outlet end；And cooling water installation, for providing cold water, including the second three-way piece, second flow regulating valve, stop valve and water circulating pump to hot water storage tank and drenching sprayer.

Description

An energy-saving defrosting system for cold storage

technical field

The utility model belongs to the field of high efficiency and energy saving, in particular to an energy-saving defrosting system for cold storage.

Background technique

When the evaporation temperature of the cold storage system is lower than 0 degrees, there will be a frost layer on the surface of the evaporator, which will affect the heat exchange efficiency, so defrosting measures should be used for defrosting. The simple and effective defrosting method in the cold storage is water defrosting. The water defrosting is to spray water on the surface of the evaporator through the water spray device, so that the frost layer is melted by the heat brought by the water flow and drained from the drain pipe.

But water defrosting requires strict technical measures. The temperature of the defrosting water is about 25 degrees. Overheating will produce mist, and if it is too low, more water will be needed. If the frost is not removed within the time, the frost layer may form ice after the air cooler works again. layer, making the next defrosting process more difficult. Moreover, in the prior art, the condenser in the cold storage directly discharges the heat of the high-temperature and high-pressure refrigerant vapor into the air, causing thermal pollution and energy waste.

Utility model content

The utility model is developed to solve the above problems, and the purpose is to provide an energy-saving defrosting system for cold storage.

The utility model provides an energy-saving defrosting system for cold storage, which is used for defrosting and removing the frost on the surface of the evaporating coil in the cold storage. Water, including a sprinkler head arranged above the evaporator coil and a first flow regulating valve communicated with the water inlet port of the sprinkler head; a water storage device for collecting and storing cold water flowing down from the surface of the evaporator coil , including the water receiving tray arranged under the evaporation coil and the water storage tank connected with the water receiving tray through pipes; the hot water supply device is used to provide hot water to the shower device, including the hot water storage tank arranged above the water storage tank , the condensing coil arranged in the heat storage tank, the defrosting water pump and the first three-way piece connected with the water outlet of the heat storage tank; Provide cold water, including a second three-way piece, a second flow regulating valve, a shut-off valve and a circulating water pump, wherein the first three-way piece has two input ends and one output end, and the defrosting water pump is used to drive hot water to flow to the shower The water outlet of the defrosting water pump communicates with one of the input ends of the first three-way piece. The first flow regulating valve is used to control the flow of cold and hot water entering the sprinkler head. The inlet of the first flow regulating valve The water outlet port communicates with the output end of the first three-way piece, the second three-way piece has two output ends and one input end, the second flow regulating valve is used to control the flow of cold water entering the sprinkler head, the second flow The water inlet port of the regulating valve communicates with one of the output ports of the second three-way member, the water outlet port of the second flow regulating valve communicates with the other input port of the first three-way member, and the water inlet port of the shut-off valve communicates with the second The other output end of the tee is connected, the water outlet end of the stop valve is connected with the hot water storage tank, the circulating water pump is used to drive the flow of cold water, the circulating water pump is arranged at the water outlet of the water storage tank, and the water outlet end of the circulating water pump is connected The input ends of the two and three links are connected.

In the energy-saving defrosting system for cold storage provided by the utility model, it may also have such a feature: wherein, the water spray nozzle is provided with a plurality of water spray holes.

In the energy-saving defrosting system for cold storage provided by the utility model, it can also have such a feature: the upper part of the hot water storage tank is provided with a replenishment pipe extending outside the hot water storage tank, which is used to supplement the water in the hot water storage tank. hot water.

In the energy-saving defrosting system for cold storage provided by the utility model, it may also have such a feature: the outer surface of the heat storage tank is provided with an insulating layer.

Function and effect of utility model

According to the energy-saving defrosting system for cold storage of the present invention, because the first flow regulating valve is used, it is convenient to control the flow of cold and hot water entering the shower nozzle, so that the frost on the surface of the evaporation coil in the cold storage can Effective removal; due to the installation of a water receiving tray and a water storage tank under the evaporating coil, the cold water formed by defrosting can be collected and stored, preventing the surface of the evaporating coil from freezing and saving water resources; due to the adoption of the second The flow regulating valve makes it possible to add cold water to the hot water entering the shower head, so that the water sprayed on the surface of the evaporating coil will not generate mist due to the high water temperature; because a cut-off is set between the circulating water pump and the heat storage tank The valve is convenient for real-time control of the amount of water stored in the hot water storage tank; since the condensation coil is installed in the hot water storage tank, it is convenient to make full use of the heat of the refrigerant vapor in the condenser and save energy consumption.

Description of drawings

Fig. 1 is a schematic structural diagram of an energy-saving defrosting system for cold storage in an embodiment of the present invention.

detailed description

In order to make the technical means and effects realized by the utility model easy to understand, the following embodiments are combined with the accompanying drawings to describe the utility model in detail.

<Example>

Fig. 1 is a schematic structural diagram of an energy-saving defrosting system for cold storage in an embodiment of the present invention.

As shown in Figure 1, the energy-saving defrosting system 100 for cold storage is used to defrost and remove the frost on the surface of the evaporation coil 1 in the cold storage, including a water shower device 10, a water storage device 20, a hot water supply device 30 and a water supply device. Chiller 40.

As shown in FIG. 1 , the shower device 10 includes a shower nozzle 11 , a shower pipe 12 and a first flow regulating valve 13 .

The number of shower nozzles 11 is four, all of which are arranged above the evaporation coil 1, and each shower nozzle is provided with a plurality of shower holes (not shown in the figure) for spraying water on the surface of the evaporation coil 1. Drizzle with water to defrost.

The water shower pipe 12 is used to transport hot and cold water to the water shower head 11 , and the water outlet end of the water shower pipe 12 communicates with the water inlet end of the water shower head 11 .

The first flow regulating valve 13 is used to control the flow of cold and hot water entering the shower head, and the water outlet of the first flow regulating valve 13 communicates with the water inlet of the shower pipe 12 .

As shown in FIG. 1 , the water storage device 20 includes a water receiving tray 21 , a drainage pipe 22 and a water storage tank 23 .

The water receiving tray 21 is arranged below the evaporating coil 1 for collecting cold water flowing down from the surface of the evaporating coil 1 after defrosting.

The water inlet end of the drainage pipe 22 communicates with the lower end of the water receiving tray 21, the water inlet end of the water storage tank 23 communicates with the water outlet end of the drainage pipe 22, and the water drainage pipe 22 is used to transport the cold water collected in the water receiving tray to the water storage tank 23, the water storage tank 23 is used to store the cold water collected by the water receiving tray 21.

As shown in FIG. 1 , the hot water supply device 30 is used to provide hot water to the shower device 10 , and includes a hot water storage tank 31 , a condensing coil 32 , a water supply pipe 33 , a defrosting water pump 34 and a first three-way piece 35 .

The hot water storage tank 31 is arranged above the water storage tank 23 for storing hot water.

An insulating layer 311 is provided on the outer surface of the heat storage tank 31 to reduce heat loss in the heat storage tank 31 .

The condensing coil 32 is arranged in the hot water storage tank 31 , and the condensing coil 32 is a part of the condenser of the cold storage, and uses the heat of refrigerant vapor in the cold storage condenser to heat the cold water entering the hot storage tank 31 .

The water supply pipeline 33 is arranged on the upper part of the hot water storage tank 31 and extends outside the hot water storage tank 31 , for replenishing hot water into the hot water storage tank 31 .

The water inlet end of the defrosting water pump 34 communicates with the water outlet end of the hot water storage tank 31 , and is used to drive the hot water in the hot water storage tank 31 to flow to the shower head 11 .

The first three-way member 35 has two input terminals, one output terminal and a temperature sensor (not shown in the figure).

The temperature sensor is arranged inside the first three-way piece 35 for detecting the temperature of the cold and hot water flow.

One of the input ends of the first three-way member 35 communicates with the water outlet end of the defrosting water pump 34 , and the output end of the first three-way member 35 communicates with the water inlet end of the first flow regulating valve 13 .

As shown in FIG. 1 , the cold water supply device 40 is used to provide cold water to the hot water storage tank 31 and the shower head 11 , and includes a second flow regulating valve 41 , a stop valve 42 , a circulating water pump 43 and a second three-way piece 44 .

The second flow regulating valve 41 is used to control the flow of cold water entering the shower nozzle 11 according to the detection result of the temperature sensor, and the water outlet end of the second flow regulating valve 41 communicates with the other input end of the first tee piece 35 .

The water outlet end of the stop valve 42 communicates with the water inlet end of the hot water storage tank 31 .

The circulating water pump 43 is used to drive cold water to flow, and the circulating water pump 43 is arranged at the water outlet of the water storage tank 23 .

The second three-way member 44 has two output ends and an input end (not shown in the figure),

One of the output ends of the second three-way member 44 communicates with the water inlet end of the second flow regulating valve 41,

The other output end of the second three-way piece 44 communicates with the water inlet end of the shut-off valve 42,

The input end of the second three-way piece 44 communicates with the water outlet end of the circulating water pump 43 .

The working process of the energy-saving defrosting system for cold storage in this embodiment is as follows:

During the defrosting operation, the second flow regulating valve 41, the shut-off valve 42 and the circulating water pump 43 are all kept closed, the defrosting water pump 34 is turned on, and the first flow regulating valve 13 is connected to transfer the heat stored through the condensing coil 32 to The defrosting water in the water tank 31 is led to the shower nozzle 11 for defrosting work.

When the temperature sensor detects that the temperature of the defrosting water in the heat storage tank 31 is high, keep the stop valve 42 closed, open the circulating water pump 43 at the same time, and connect the second flow regulating valve 41. At this time, the circulating water pump 43 can turn the water storage tank The cold water in 23 is sent to the first three-way part 35, and the cold and hot water are mixed and enter the water spray pipe 12 driven by the defrosting water pump 34, and then the water spray nozzle 11 defrosts the frost layer on the evaporating coil 1 Work.

After defrosting, the defrosting water returns to the water storage tank 23 through the water receiving tray 21 and the connected drainage pipe 22, and the defrosting water pump 34, the first flow regulating valve 13 and the second flow regulating valve 41 are turned off, and the cut-off valve is turned on. The valve 42 and the circulating water pump 43 are turned on, and the defrosted cold water in the water storage tank 23 is sent to the hot water storage tank 31 under the drive of the circulating water pump 43 to store heat, thereby entering the next defrosting cycle.

Function and effect of embodiment

According to the energy-saving defrosting system for cold storage provided in this embodiment, because the first flow regulating valve is used, it is convenient to control the flow of cold and hot water entering the shower nozzle, so that the frost on the surface of the evaporating coil in the cold storage can Effective removal; due to the installation of a water receiving tray and a water storage tank under the evaporating coil, the cold water formed by defrosting can be collected and stored, preventing the surface of the evaporating coil from freezing and saving water resources; due to the adoption of the second The flow regulating valve makes it possible to add cold water to the hot water entering the shower head, so that the water sprayed on the surface of the evaporating coil will not generate mist due to the high water temperature; because a cut-off is set between the circulating water pump and the heat storage tank The valve is convenient for real-time control of the amount of water stored in the hot water storage tank; since the condensation coil is installed in the hot water storage tank, it is convenient to make full use of the heat of the refrigerant vapor in the condenser and save energy consumption.

A plurality of water spray holes are arranged on the water spray head, so that the frost on the surface of the evaporating coil can be melted evenly.

The upper part of the heat storage tank is provided with a replenishment pipe extending outside the heat storage tank, which is used to replenish hot water into the heat storage tank to prevent the low temperature of the cold and hot water flow entering the shower head from wasting energy consumption.

The outer surface of the heat storage tank is provided with an insulation layer, which is convenient for reducing heat loss in the heat storage tank.

The energy-saving defrosting system for cold storage uses the condensation heat in the cold storage to defrost, and removes the frost layer on the surface of the evaporating coil with the heat stored in the hot water storage tank. At the same time, it can mix cold water and adjust the temperature to meet different conditions. defrosting requirements. The system is flexible and convenient, saves energy, and is simple and easy to operate.

Claims (4)

1. An energy-saving defrosting system for cold storage, used for defrosting and removing the frost on the surface of the evaporation coil in the cold storage, characterized in that it includes: The water spraying device is used for spraying water on the surface of the evaporating coil, including a water spray head arranged above the evaporation coil and a first flow regulating valve connected to the water inlet end of the water spray head; The water storage device is used to collect and store the cold water flowing down from the surface of the evaporating coil, including a water receiving pan arranged under the evaporating coil and a water storage tank communicated with the water receiving pan through pipes; The hot water supply device is used to provide hot water to the water shower device, including a hot water storage tank arranged above the water storage tank, a condensing coil arranged in the hot water storage tank, and the hot water storage tank The defrosting water pump and the first three-way piece connected to the water outlet of the tank; and a cold water supply device for providing cold water to the hot water storage tank and the shower head, including a second three-way piece, a second flow regulating valve, a shut-off valve and a circulating water pump, Wherein, the first three-way member has two input ends and an output end, The defrosting water pump is used to drive hot water to flow to the sprinkler head, and the water outlet end of the defrosting water pump communicates with one of the input ends of the first tee piece, The first flow regulating valve is used to control the flow of hot and cold water entering the sprinkler head, the water inlet end of the first flow regulating valve communicates with the output end of the first three-way piece, The second tee has two output ends and an input end, The second flow regulating valve is used to control the flow of cold water entering the shower head, and the water inlet end of the second flow regulating valve communicates with one of the output ends of the second tee piece , the water outlet end of the second flow regulating valve communicates with the other input end of the first three-way piece, The water inlet end of the shut-off valve communicates with the other output end of the second three-way piece, the water outlet end of the shut-off valve communicates with the hot water storage tank, The circulating water pump is used to drive the flow of cold water, the circulating water pump is arranged at the water outlet of the water storage tank, and the water outlet end of the circulating water pump communicates with the input end of the second tee piece. 2. A kind of energy-saving defrosting system for cold storage according to claim 1, characterized in that: Wherein, the shower nozzle is provided with a plurality of shower holes. 3. A kind of energy-saving defrosting system for cold storage according to claim 1, characterized in that: Wherein, the inner upper part of the hot water storage tank is provided with a replenishment pipe extending outside the hot water storage tank for supplementing hot water into the hot water storage tank. 4. A kind of energy-saving defrosting system for cold storage according to claim 1, characterized in that: Wherein, an insulating layer is provided on the outer surface of the hot water storage tank.