CN201025421Y

CN201025421Y - Thermal pump bypass defrosting device

Info

Publication number: CN201025421Y
Application number: CNU2007200002445U
Authority: CN
Inventors: 张玉仁
Original assignee: TAIWAN MAXWELL CO Ltd
Current assignee: TAIWAN MAXWELL CO Ltd
Priority date: 2007-01-16
Filing date: 2007-01-16
Publication date: 2008-02-20
Anticipated expiration: 2017-01-16

Abstract

A defrosting equipment for the bypass of heat pump includes a bypass pipe of equipment, a basic hardware loop comprised of a hand stop valve and an electromagnetic valve which are arranged on the bypass pipe. The equipment is used in the condition that heat pump and water unit are frosted and frozen in the low temperature environment, the equipment is in precondition of non-stop and non-external force, the frosting and frozen problems of the heat pump and water unit of the evaporator can be eliminated, and the design of eliminating frosted and frozen with external force is improved, or the type of changing equipment flow sheet by stopping is improved. Therefore, the complexity of pipe of the equipment is reduced, and the manufacturing cost is reduced.

Description

The heat pump bypass defrosting equipment

Technical field

The utility model relates to a kind of heat pump bypass defrosting equipment; particularly relate to a kind of heat pump water-heating machine that is used under low temperature environment; the improvement that the equipment frosting that is caused is frozen; make equipment not shut down and not add under the state of external force; can see through the design of bypass defrosting equipment; thaw and can defrost voluntarily, it is novel to make equipment can continue the novel practical of running performance function under the state of rising again.

Background technology

Industrial circle mainly is to adopt three kinds of modes to be carried out for the Defrost mode of the frosting of heat pump water-heating machine at present, the defrosting of (one) electrothermal, the defrosting of (two) four way reversing valves, the defrosting of (three) switch type, wherein:

(1) electrothermal defrosting; be on the evaporimeter of equipment, to add electric calorifie installation; and defrosting when thawing, must shut down and start electric heater, and produce heat energy by electric energy; make attached to frost on the evaporimeter or ice and can fuse; turn round once more with acquisition equipment, its shortcoming mainly is because of must shutting down, and need add electricity needs; so in operation, the problems such as man-hour, manpower and power wastage that have produce.

The defrosting of (two) four way reversing valves; then as shown in Figure 4; this heat-pump apparatus is provided with No. four commutators 30 on main line 31; condenser 32; expansion valve 33; evaporimeter 34 and compressor 35; and in the normal loop of refrigerating and air conditioning; the flow direction as the arrow sign; and when evaporimeter 34 frostings are freezed; equipment shuts down; and with Fig. 5 was indicated 30 actions of four way reversing valves and starting device running; the equipment flow direction of this moment is the flow direction as arrow indicated; and original evaporimeter 34 is changed by the equipment compression direction, the condenser 34 that becomes equipment can defrost equipment to thaw, and the defrosting of this equipment designs; also electrothermal method is the same as described above; equipment downtime must be rerunned, and the pipeline parts configuration is comparatively complicated, also is its shortcoming place.

(3) switch type defrosting; can cooperate consult shown in Figure 6; the configuration of its heat-pump apparatus; be that condenser 41 is set on main line 40; expansion valve 42; evaporimeter 43 and compressor 44; and in compressor 44 to evaporimeter 43 and evaporimeter 43 to condenser 41; one defrost circuit 50 is set between the expansion valve 42; this switch type defrosting; mainly be that sharp equipment itself is done cold and hot secondary and exchanged the frosting on the evaporimeter 43 or freeze to remove; this mode can be carried out under the non-stop-machine operation of equipment; precisely because shortcoming is; can increase cost of manufacture, and evaporimeter 43 is necessary for articles made to order, can't be extensive use of.

This shows that above-mentioned existing defrosting equipment obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem that defrosting equipment exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of heat pump bypass defrosting equipment of new structure, just becoming the current industry utmost point needs improved target.

Because the defective that above-mentioned existing defrosting equipment exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of heat pump bypass defrosting equipment of new structure, can improve general existing defrosting equipment, make it have more practicality.Through constantly research, design, and, create the utility model that has practical value finally through after studying sample and improvement repeatedly.

Summary of the invention

Main purpose of the present utility model is; overcome the defective that existing defrosting equipment exists; and provide a kind of heat pump bypass defrosting equipment of new structure; technical problem to be solved is the improvement that its equipment frosting that is caused in the working environment of low temperature is frozen; can thaw not shutting down and do not add under the state of external force defrosting voluntarily; make equipment under the state of rising again, can continue running performance function, thereby be suitable for practicality more.

Be architectural feature and the technology contents of reaching above-mentioned purpose, the utility model " heat pump bypass defrosting equipment ", the configuration of its heat-pump apparatus, be to have a main line, one compressor and the condenser that continues, filter, expansion valve and evaporimeter are set on main line, it is characterized in that: a bypass pipe road is set between compressor outlet and the evaporimeter, hand stop valve or magnetic valve are set on bypass line.

Design by this; and when demand is thawed in defrosting; the HTHP vaporizing refrigerant that compressor can be exported; seeing through the hand stop valve unlatching or controlling automatically makes the magnetic valve action make the HTHP vaporizing refrigerant through the direct input of bypass line input evaporimeter; and the vaporizing refrigerant of process evaporimeter; because of being higher than evaporimeter periphery that frosting the freezes cold and hot exchange interaction of aqueous vapor that condenses; make the evaporimeter periphery aqueous vapor of condensing thaw; and equipment can not shut down and not add under the state of external force, can reach the effect of thawing that defrosts.

Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.

Description of drawings

Fig. 1: the utility model equipment configuration schematic diagram ().

Fig. 2: the utility model equipment configuration schematic diagram (two).

Fig. 3: the utility model equipment configuration schematic diagram (three).

Fig. 4: the equipment configuration and the normal loop schematic diagram of existing heat pump.

Fig. 5: the equipment of existing heat pump disposes and starts the schematic diagram that flows to of commutation.

Fig. 6: the switch type defrosting equipment configuration schematic diagram of another existing heat pump.

10 compressors, 11 main lines

12 condensers, 13 filters

14 expansion valves, 15 evaporimeters

20 bypass lines, 21 hand stop valves

22 magnetic valves, 30 No. four commutators

31 main lines, 32 condensers

33 expansion valves, 34 evaporimeters

35 compressors, 40 main lines

50 defrost circuit

The specific embodiment

For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of heat pump bypass defrosting equipment, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

Cooperate and consult Fig. 1,2, shown in 3, the configuration of the utility model " heat pump bypass defrosting equipment " heat-pump apparatus, be to have a main line 11, the condenser 12 that one compressor 10 is set on main line 11 and continues, filter 13, expansion valve 14 and evaporimeter 15, and the utility model characteristics are between compressor 10 outlets and evaporimeter 15 a bypass pipe road 20 to be set, and hand stop valve 21 or magnetic valve 22 be set on bypass line 20, or hand stop valve 21 and magnetic valve 22 in parallel, as shown in Figure 1, be that hand stop valve 21 is set on bypass line 20, as shown in Figure 2, be that magnetic valve 22 is set on bypass line 20, as shown in Figure 3, then be that hand stop valve 21 and magnetic valve 22 in parallel are set on bypass line 20, this is all the equipment configuration of the feasible embodiment of the utility model, and hand stop valve 21 is opened or automatic control makes magnetic valve 22 actions and can see through, and the HTHP vaporizing refrigerant can directly be imported in the evaporimeter 15 via bypass line 20 inputs.

Equipment operation of the present utility model, when compressor 10 compression refrigerants, refrigerant can be collapsed into the overheated gaseous coolant of high pressure-temperature, and heat can be released in the hot water water butt (not shown), make refrigerant become high pressure supercooling liquid refrigerants, high-low pressure official post refrigerant by expansion valve 14 becomes low-pressure low-temperature saturated solution gas mixing refrigerant again, and can drive gas flow via the fan (not shown), make evaporimeter 15 can absorb extraneous thermal source and become the overheated gaseous coolant of low-pressure low-temperature by refrigerant, the refrigerant that will carry heat again sucks back compressor 10, so constantly circulation is moved action as heat and is made that hot water water butt temperature continues to rise, till required temperature.

When evaporimeter 15 frostings are frozen; defrost when thawing demand and have; the HTHP vaporizing refrigerant that compressor 10 can be exported sees through bypass line 20 and directly imports evaporimeter 15, makes the vaporizing refrigerant through evaporimeter 15; can carry out cold and hot exchange interaction because of being higher than evaporimeter 15 peripheries that frosting the freezes aqueous vapor of condensing; evaporimeter 15 peripheral condensate water are so incensed that to thaw, therefore, the utility model design; can not shut down and do not add under the state of external force at equipment, can reach the defrosting effect of thawing.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. heat pump bypass defrosting equipment, it has a main line, one compressor and the condenser that continues, filter, expansion valve and evaporimeter are set on main line, it is characterized in that: a bypass pipe road is set between compressor outlet and the evaporimeter, hand stop valve is set on bypass line.

2. heat pump bypass defrosting equipment, it has a main line, one compressor and the condenser that continues, filter, expansion valve and evaporimeter are set on main line, it is characterized in that: a bypass pipe road is set between compressor outlet and the evaporimeter, magnetic valve is set on bypass line.

3. heat pump bypass defrosting equipment, it has a main line, one compressor and the condenser that continues, filter, expansion valve and evaporimeter are set on main line, it is characterized in that: a bypass pipe road is set between compressor outlet and the evaporimeter, hand stop valve and magnetic valve in parallel are set on bypass line.